Philips SureSigns VM -Patient Monitors – Error codes – causes of errors – Solution for errors

March 4, 2018, 9:40 pm

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Philips SureSigns VM

Error Codes
When the monitor detects an error condition (depending on the type of error) an error message appears on the screen or an error code is written to the Error Log. Error codes can be either:
If an error occurs during monitoring, an audible alarm also sounds. Press the Audio Alarm Control button to end the audible alarm.

Warning Codes
A warning code is typically an indication that an event in the monitor bears attention or intervention and appears in the monitor’s messages panel.
Warning codes can be physiological or technical alarms. A physiological alarm indicates that the monitor has sensed an unsafe condition such as Desat or a measurement that has exceeded the alarm settings. A technical alarm indicates that the monitor has sensed a malfunction in the operation of the monitor like an uncalibrated CO2 module or NBP air leak.

Service Codes
A service code is an indication that the monitor has detected an error in operation and service might be required. A service code error is a hexadecimal number that indicates the nature of the error.

Error codes 

257

System Error

Battery charger power failure

Replace the main PCB.
261

System Error

Battery is overcharged

Run the monitor without AC power. If the problem persists, replace the
battery. If the problem persists, replace the main PCB.
264 temp value
System Error

Battery over temperature Shut down and restart the monitor. If
the problem persists, replace the battery.

If the problem persists, replace the main PCB.
769 (1)

ECG Equip Malfunc (1) ECG hardware internal calibration – gain error
Replace the front end assembly.
769 (2)

ECG Equip Malfunc (2)

 ECG hardware internal calibration – linearity error
Replace the front end assembly.
769 (3)

ECG Equip Malfunc (3) ECG hardware internal calibration  offset error
Replace the front end assembly.
770

FPGA FIFO Overrun

ECG software error on main board Shutdown and restart the monitor. If the problem persists, replace the main PCB.
771

ECG Error.

The front end will now reset itself.
No data from ECG Replace the front end assembly

If the problem persists, replace the main PCB.

785 (1)

IBP Equip Malfunc - Initialization Failed (1)
IBP A/D did not configure correctly during power-up
Replace the front end assembly
785 (2)

IBP Equip Malfunc - Initialization Failed (2)
IBP A/D did not configure correctly during reset
Replace the front end assembly.
786

FPGA FIFO Overrun IBP software problem Shut down and restart the monitor. If the problem persists, replace the main PCB. 

787

IBP Error. The front end will now reset itself.
No data from IBP Replace the front end assembly

If the problem persists, replace the main PCB.
801

FPGA FIFO Overrun Continuous temperature software problem
Shut down and restart the monitor. If the problem persists, replace the main PCB.
802

Temp Error. The front end will now reset itself. No data from the continuous temperature equipment.
Replace the front end assembly. If the problem persists, replace the main PCB.
803 (1)

Temp Equip Malfunc Continuous temperature equipment malfunction Replace the front end assembly.
817

FPGA FIFO Overrun

NBP software problem Shut down and restart the monitor. If the problem persists, replace the main PCB.
818 (2)

NBP Equip Malfunc (2)

NBP power-on self test failed because the A/D converter is inoperative, or the pressure transducer offset is too large. Replace the NBP assembly. If the problem persists, replace
the main PCB.
818 (15)

NBP Equip Malfunc (15) NBP abnormal, unrecoverable system errors with internal firmware.
Replace the NBP assembly. If the problem persists, replace the main PCB.

818 (25)

NBP Equip Malfunc (25) NBP hardware has malfunctioned because of no data
Replace the NBP assembly. If the problem persists, replace the main PCB.
819

NBP Equip Malfunc – Not Calibrated
NBP not calibrated Shut down and restart the monitor. If the problem persists, recalibrate the NBP unit.
833 (1)

SpO2 Equip Malfunc (1)

SpO2 ROM checksum error Replace the SpO2 board.
833 (2)

SpO2 Equip Malfunc (2)

SpO2 RAM test error Replace the SpO2 board.
833 (4)

SpO2 Equip Malfunc (4)

SpO2 analog signal path self test failed Replace the SpO2 board.
833 (6)

SpO2 Equip Malfunc (6)

SpO2 self test timeout Reseat the SpO2 board. If the problem persists, replace the SpO2 board. See
833 (8)

SpO2 Equip Malfunc (8)

SpO2 internal DSP communication error
Replace the SpO2 board.
833 (10)

SpO2 Equip Malfunc (10)

SpO2 host communication error Replace the front end assembly

If the problem persists, replace the main PCB.
833 (20)

SpO2 Equip Malfunc (20)

SpO2 hardware defect 

Replace the SpO2 board.
833 (40)

SpO2 Equip Malfunc SpO2 non-volatile memory corrupted Replace the SpO2 board.
834

SpO2 Sensor Malfunction

Malfunction of the SpO2 sensor or sensor cable
Check the SpO2 cable. If the problem persists, replace the SpO2 board.
835

FPGA FIFO Overrun SpO2 software problem Shut down and restart the monitor. 

If the problem persists, replace the main PCB.

836

SpO2 Communication Error

Replace the SpO2 board

If the problem persists, replace the front end assembly. If the problem persists, replace the main PCB.

837

SpO2 Error.

The front end will now reset itself.
No SpO2 data

Replace the SpO2 board

If the problem persists, replace the front end assembly.

If the problem persists, replace the main PCB.
849

FPGA FIFO Overrun CO2 software problem Shut down and restart the monitor.

If the problem persists, replace the main PCB..
850

CO2 Error. The front end will now reset itself.
No CO2 data Replace the CO2 module. If the problem persists, replace the main PCB.
851 (1)

CO2 Equip Malfunc (1)

CO2 calibration error Check/re-calibrate the CO2 module. If the problem persists, replace the CO2 module.
851 (2)

CO2 Equip Malfunc (2) CO2 equipment flow malfunction Check flow in line. If the problem persists, replace the CO2 module.
851 (3)

CO2 Equip Malfunc (3)

CO2 occlusion in gas input line Check flow in line. If the problem persists, replace the CO2 module.
851 (16)

CO2 Equip Malfunc (16) CO2 main board error Replace the CO2 module.
851 (17)

CO2 Equip Malfunc (17)

CO2 equipment malfunction Shut down and restart the monitor. If the problem persists, replace the CO2 module. 

Electro help - Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

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Vestel 17MB35 – LCD TV main board – How to enter service mode, How to update the software

March 5, 2018, 11:20 pm

≫ Next: AOC 198PW – 19 inch TFT LCD TV – Service mode – software update – power and inverter board schematic

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Used with Orion  TV19PL120DVD, JVC LT-40DG20J, L556VN05U, Xeniux-LCDX32WHD88, HitachiL26HP03U, Hitachi LC42VC04UJ, Luxor LUX42-742  and many more brand LCD TVs

17MB35 Main Board consists of MSTAR concept. This IC is capable of handling Audio processing, video processing, Scaling-Display processing, 3D comb filter, OSD and text
processing, 8 bit dual LVDS transmitter.
TV supports PAL, SECAM, NTSC colour standards and multiple transmission standards as B/G, D/K, I/I’, and L/L’ including German and NICAM stereo.
Sound system output is supplying 2x10W (10%THD) for stereo 8Ω speakers.

TUNER
A horizontal mounted and Digital Half-Nim tuner is used in the product, which covers 3 Bands(From 48MHz to 862MHz for COFDM, from 45.25MHz to 863.25MHz for CCIR
CH). The tuning is available through the digitally controlled I2C bus (PLL). Below you can find info on the Tuner in use.

17MB35 uses a 20W Class D Stereo Single Ended Audio Amplifer for audio. The MP7722 is a stereo 20W Class D Audio Amplifier. It is one of MPS’ second generation of fully integrated audio amplifiers which dramatically reduces solution size by integrating the following:* 180mΩ power MOSFETs* Startup / Shutdown pop elimination* Short circuit protection* Mute / Standby
The MP7722 utilizes a single ended output structure capable of delivering 2 x 20W into 4Ω speakers. MPS Class D Audio Amplifiers exhibit the high fidelity of a Class A/B amplifier at efficiencies greater than 90%. The circuit is based on the MPS’ proprietary variable frequency topology that delivers low distortion, fast response time and operates on a single power supply.

POWER STAGE
The DC voltages required at various parts of the chassis and inverters are provided by a main power supply unit. The power supply generates 33V, 24V, 12V, 5V, 3,3V and 5V, 3,3V stand by mode DC voltages. Power stage which is on-chasis generates 1,26V stand by voltage and 8V, 2,6V, 1,8V and 1V supplies for other different parts of the chassis.

MICROCONTROLLER (MSTAR)

The MST6WB7GQ-3 is a high performance and fully integrated IC for multi-function LCD monitor/TV with resolutions up to full HD (1920x1080). It is configured with an integrated triple-ADC/PLL, an integrated DVI/HDCP/HDMI receiver, a multi-standard TV video and audio decoder, two video de-interlacers, two scaling engines, the MStarACE-3 color engine, an on-screen display controller, an 8-bit MCU and a built-in output panel interface. By use of external frame buffer, PIP/POP is provided for multimedia applications. Furthermore, 3-D video decoding and processing are fulfilled for high-quality TV applications. To further reduce system costs, the MST6WB7GQ-3 also integrates intelligent power management control capability for green-mode requirements and spread-spectrum support for EMI management.

The STV0297E is a complete single-chip QAM (quadrature amplitude modulation) demodulation and FEC (forward error correction) solution that performs sampled IF to

transport stream (MPEG-2 or MPEG-4) block processing of QAM signals. It is intended for the digital transmission of compressed television, sound, and data services over
cable. It is fully compliant with ITU-T J83 Annexes A/C or DVB-C specification bit streams (ETS 300 429, “Digital broadcasting systems for television, sound and data services – Framing structure, channel coding and modulation - Cable Systems”). It can handle square (16, 64, 256-QAM) and non-square (32, 128-QAM) constellations.

Japanese DBS systems require a transport stream multiplex frame (TSMF) layer to carry digital signals over cable systems. When the recovered transport stream is a
multiplex frame, the STV0297E post-processes it to extract a single transport stream.
Automatic detection of the TSMF layer is provided. The chip integrates an analog-to digital converter that delivers the required performance to handle up to 256-QAM signals in a direct IF sampling architecture, thus eliminating the need for external down conversion.

2048-Bits Serial EEPROM – 24LC02 [System Memory]
The 24LC01/02 is a 1K/2K-bit serial read/write non-volatile memory device using the CMOS floating gate process. Its 1024/2048 bits of memory are organized into 128/256 words and each word is 8 bits. The device is optimized for use in many industrial and commercial applications where low power and low voltage operation are essential. Up to eight HT24LC01/02 devices may be connected to the same two-wire bus. The HT24LC01/02 is guaranteed for 1M erase/write cycles and 40-year data retention.

32K Smart Serial EEPROM – 24C32

The Microchip Technology Inc. 24C32 is a 4K x 8 (32K bit) Serial Electrically Erasable PROM. This device has been developed for advanced, low power applications such as

personal communications or data acquisition. The 24C32 features an input cache for fast write loads with a capacity of eight 8-byte pages, or 64 bytes. It also features a fixed 4K-bit block of ultra-high endurance memory for data that changes frequently. The 24C32 is capable of both random and sequential reads up to the 32K boundary.
Functional address lines allow up to eight 24C32 devices on the same bus, for up to 256K bits address space. Advanced CMOS technology makes this device ideal for lowpower non-volatile code and data applications. The 24C32 is available in the standard 8-pin plastic DIP and 8-pin surface mount SOIC package.

FDN336P

The ST24LC21 is a 1K bit electrically erasable programmable memory (EEPROM), organized by 8 bits.This device can operate in two modes: Transmit Only mode and I2C
bidirectional mode. When powered, the device is in Transmit Only mode with EEPROM data clocked out from the rising edge of the signal applied on VCLK. The device will switch to the I2C bidirectional mode upon the falling edge of the signal applied on SCL pin. The ST24LC21 cannot switch from the I2C bidirectional mode to the Transmit Only mode (except when the power supply is removed). The device operates with a power supply value as low as 2.5V. Both Plastic Dual-in-Line and Plastic Small Outline packages are available. 

PI5V330

Pericom Semiconductor.s PI5V series of mixed signal video circuits are produced in the Company.s advanced CMOS low-power technology, achieving industry leading performance. The PI5V330 is a true bidirectional Quad 2-channel multiplexer/demultiplexer that is recommended for both RGB and composite video switching applications. The VideoSwitch. can be driven from a current output RAMDAC or voltage output composite video source. Low ON-resistance and wide bandwidth make it ideal for video and other applications. Also this device has exceptionally high current capability which is far greater than most analog switches offered today. A single 5V supply is all that is required for operation. The PI5V330 offers a high-performance, low-cost solution to switch between video sources. The application section describes the PI5V330 replacing the HC4053 multiplier and buffer/amplifier.

AZC099-04S

AZC099-04S is a high performance and low cost design which includes surge rated diode arrays to protect high speed data interfaces. The AZC099-04S family has been
specifically designed to protect sensitive components, which are connected to data and transmission lines, from over-voltage caused by Electrostatic Discharging (ESD),
Electrical Fast Transients (EFT), and Lightning.
AZC099-04S is a unique design which includes surge rated, low capacitance steering diodes and a unique design of clamping cell which is an equivalent TVS diode in a single package. During transient conditions, the steering diodes direct the transient to either the power supply line or to the ground line. The internal unique design of clamping cell prevents over-voltage on the power line, protecting any downstream components.
AZC099-04S may be used to meet the ESD immunity requirements of IEC 61000-4-2, Level 4 (± 15kV air, ±8kV contact discharge).

TDA1308

The TDA1308; TDA1308A is an integrated class-AB stereo headphone driver contained in  an SO8, DIP8 or a TSSOP8 plastic package. The TDA1308AUK is available in an 8 bump wafer level chip-size package (WLCSP8). The device is fabricated in a 1 mm. Complementary Metal Oxide Semiconductor (CMOS) process and has been primarily
developed for portable digital audio applications. The difference between the TDA1308 and the TDA1308A is that the TDA1308A can be used at low supply voltages.

ST3222

The ST3222 is a 3V powered EIA/TIA-232 and V.28/V.24 communications interface with low power requirements and high data-rate capabilities. ST3222 has a proprietary low dropout transmitter output stage providing true RS-232 performance from 3 to 3.6V power supplies. The device requires only four small 0.1mF standard external capacitors for operating from 3V supply. The ST3222 has two receivers and two drivers. The ST3222 features a 1mA shutdown mode that reduces power consumption and extends battery life in portable systems. Its receivers can remain active in shutdown mode, allowing external devices such as modems to be monitored using only 1mA supply current. The device is guaranteed to run at data rates of 250Kbps while maintaining RS-232 output levels.

MP1583

The MP1583 is a step-down regulator with a built in internal Power MOSFET. It achieves 3A continuous output current over a wide input supply range with excellent load and line regulation.
Current mode operation provides fast transient response and eases loop stabilization.
Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown.
Adjustable soft-start reduces the stress on the input source at turn-on. In shutdown mode the regulator draws 20µA of supply current.
The MP1583 requires a minimum number of readily available external components to complete a 3A step down DC to DC converter solution.

MP2112

The MP2112 is a 1MHz constant frequency, current mode, PWM step-down converter.
The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. It is ideal for powering portable equipment that powered by a single cell Lithium-Ion (Li+) battery. The MP2112 can supply 1A of load current from a 2.5V to 6V input voltage. The output voltage can be regulated as low as 0.6V. The MP2112 can also run at 100% duty cycle for low dropout applications.
The MP2112 is available in a space-saving 6-pin QFN package.

How tho enter the service mode

In order to reach service menu, First Press “MENU” Then press the remote control code, which is “4725”.

In DTV mode, first press “MENU” and select “TV SETUP”.

Then, press “4725".

How to update the software [Firmware]

17MB35 Analog Part Software Update With Bootloader Procedure

The File Types Used By The Bootloader

All file types that used by the bootloader software are listed below:
1. The Binary File : It has “.bin” extension and it is the tv application. Its size is 1920Kb.
2. The Config Binary File : It has “.cin extension and it is the config of the tv application. Its size may be 64 Kb or a few times 64 Kb.
3. The Test Script File : It has “.txt” extension and it is the test script that is parsed and executed by the bootloader. It don’t have to be any times of 64 Kb.
4. The Test Binary File : It has “.tin” extension and it is used and written by the test groups. It is run to understand the problem part of the hardware.  Although a file that is used by the bootloader can be had any one of these extensions, its name has to be “VESTEL_S” and it has to be located in the root directory of the USB device.

Usage of The Bootloader
1. The starting to pass through: The chassis is only powered up.
2. The starting to download something: When chassis is powered up the menu key has to be pushed. Before the chassis is powered up and if any usb device is plugged to the USB port, the program is downloaded from USB firstly.
Any USB device is plugged to USB port , user must open hyperterminal in the pc and connect PC to chassis via Mstar debug tool and any one of scart,dsub9 or I2c connectors. Serial connection settings are listed below:

Bit per second: 115200
- Data bits: 8

- Parity: None
- Stop bits: 1
- Flow control: None.

In this case the bootloader sofware puts “C” character to uart. After repeating “C” characters are seen in the hyperterminal user can send any file to chassis by selecting Transfer > Send File menu item and choosing “1K Xmodem” from protocol section.

EEProm update
To Update EEProm content via uart scart,dsub9 or i2c with Mstar tool can used.
Serial connection settings are listed below:
- Bit per second: 9600
- Data bits: 8
- Parity: None
- Stop bits: 1
- Flow control: None.

Programming menu item is selected in the service menu and switch “HDCP Key Update Mode” from off to on.

Then you must see Xmodem menu in the hyperterminal.To download HDCP key press k or to download EEprom content press W.

If the repeated “C” characters are seen you can transfer file content via select Transfer > Send File and choose “Xmodem” protocol and click the “Send” button.

17MB30 HDCP key upload procedure.
1) Turn on TV set.
2) Open a COM connection using fallowing parameters and select ISP COM Port No
Baud Rate: 9600 bps
Data Bits: 8
Stop Bits: 1
Parity: None
Flow Control: None.

3) Enter service menu by pressing “4” “7” “2” 5” consecutively while main menu is open
4) Select “9. Programming”
5) Select “HDMI HDCP Update Mode” yes.
6) On Hyper Terminal Window press “k”
7) Click on send file under Transfer Tab.
8) Select Xmodem and choose the HDCP key to be uploaded.
9) Press send button
10) Restart TV set.

17MB35 Digital Software Update From SCART
Adjusting DTV Download Mode:
1. Power on the TV.
2. Exit the Stby Mode.
3. Enter the “TV Menu”.
4. Enter “4725” for jumping to “Service Settings”.
5. Select “8. Programming” step.
6. Change “6. DTV Download” to “On”.
7. Switch to the St-by mode.

Adjusting HyperTerminal:
1. Connect the “MB35 SCART Interface” to SCART1 (bottom SCART plug).
2. Also connect the “MB35 SCART Interface” to PC.
3. Open “HyperTerminal”.
4. Determine the “COM” settings listed and showed below.* Bit per second: 115200* Data bits: 8* Parity: None* Stop bits: 1* Flow control: None

6. Click “OK”.

Software Update Procedure
1. In the HyperTerminal Menu, click the “Connect” button.
2. Exit the Stby Mode.
3. The “Space” button on the keyboard must be pressed, when the following window can be seen.

4. Press the “2” button on the keyboard for choosing “2. Upgrade Application with Xmodem”.
5. Repeating “C” characters are seen in the “HyperTerminal” menu.

6. Click the “Send” button on the HyperTerminal
7. Select the “Filename xxxx_slot1.img” using “Browse”.
8. Choose the “1K Xmodem” from “Protocol” option.

Note:In the Software updating Procedure section, when the first “C” character is seen, the filename selection process must be finished before 10 seconds. If the process cannot be finished, the file sending operation will be cancelled. 

9. When sending the file the following window must be seen.

10. After the sending process the following HyperTerminal window must be seen.

11. For sending second program file, the Software Updating Procedure must be repeated from the step X. Select the “Filename xxxx_slot2.img” using “Browse”.
12. After sending the second program file, the Software Updating Procedure will be successful.
Note: After the File Sending Process,
1. Upgrade Application with FUM
2. Upgrade Application with Xmodem, options must be seen.

Checking the New Software
1. Turn off and on the TV.
2. Enter the “Setup” submenu in the “DTV Menu”.
3. Choose the “Configuration” option.
4. For controlling new software, check the “Receiver Upgrade” option.
17MB35 Digital Software Update From USB
Software upgrade is possible via USB disk by following the steps
1. Copy the bin file, including higher version than the software loaded in flash, into the USB flash memory root directory. This file should be named up.bin.
2. Insert the USB disk.
3. Digital module performs version and CRC check. If version and CRC check is successful, then a message prompt appears to notify user about new version. If the user confirms loading of new version, upgrade.bin file is written into flash unused slot.

4. Digital module disables the previous software in the flash and then a system reset is performed.
5. After the reset, digital module starts with new software.
Revert operation
With revert operation, it is possible to downgrade the software.
Revert operation is very similar to upgrade process. In the revert operation, file name should be f_up.bin. Also user confirmation is not asked.
1. Copy the bin file into the USB flash memory root directory. This file should be named force_upgrade.bin.
2. Insert the USB disk.
3. A lower version than the software in flash can be loaded with revert operation.
Digital module performs only CRC check. If CRC check is successful, then force_upgrade.bin file is written into flash unused slot.
4. Digital module disables the previous software in the flash.
5. A message prompt is displayed to notify user about end of revert process.
6. Power off/on is required to start digital module with the new software.
For controlling new software, check the “Receiver Upgrade” option.

Electro help - Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

AOC 198PW – 19 inch TFT LCD TV – Service mode – software update – power and inverter board schematic

March 8, 2018, 7:06 am

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How to enter the Service Mode, How to update the firmware, SMPS and back-light inverter circuit diagram - AOC 198PW-  - 19 inch TFT LCD TV

This monitor is equipped with VESA DDC2B capabilities according to the VESA DDC STANDARD. It allows the monitor to inform the host system of its identity and, depending on the level of DDC used, communicate additional information about its display capabilities.
The DDC2B is a bi-directional data channel based on the I2C protocol. The host can request EDID information over the DDC2B channel.

-Take care during handling the LCD module with back-light unit
-Must mount the module using mounting holes arranged in four corners.
-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.
-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to the panel.
-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).
-Make certain that treatment person’s body is grounded through wristband.
-Do not leave the module in high temperature and in areas of high humidity for a long time.
-Avoid contact with water as it may a short circuit within the module.
-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth may damage the panel.)

Factory (Service Mode) modes adjustment
To enter the factory mode
Turn on power, pull out the power cord,

 press the Menu button,

 and then plug the power cord. 

that will Auto adjust the picture to default. At the same time the factory OSD will be at the left top of the panel.

Bias adjustment

Set the Contrast to 50.
Set the Brightness to 80.
B. Gain adjustment:
Move cursor to “-F-” and press MENU key
Adjust 7800k color-temperature
1 Select the “AUTO LEVEL” option to auto adjust the picture to default,
2 Press “MENU” button, adjust 7800K color-temperature and the parameter is
x = 296 ±20, y = 311 ±20, Y = 180 ±10 cd/m2
Adjust 6500k color-temperature
1 Select the “AUTO LEVEL” option to auto adjust the picture to default,
2 Press “MENU” button, adjust 6500K color-temperature and the parameter is
x = 313 ±20, y = 329 ±20, Y = 180 ±10 cd/m2
Turn off the Power-button to quit from factory mode.

Firmware [Software Update]

Connecting to a computer

1. Connect the power cable to the AC port on the back of the monitor.
2. Connect one end of the 15-pin DVI-I cable to the back of the monitor and connect the other end to the computer's D-Sub port.
3. Connect the audio cable to audio in port on the back of the monitor
4. Connect the microphone cable to audio in port on the back of the monitor
5. Turn on your monitor and computer.

AOC 198PW power adapter board schematic 

AOC 198PW inverter board schematic

ISP Instruction

ISP tools requirement

1. 25PIN LPT cable.

2. MYSON burn-in board,

3. DVI-VGA cable

Change to VGA Mode

(1) Run MYSON MCU ISP burn-in tool,

(2) Set parameter,

3) Lode burn-in file,
Select the MCU software in 198PW ISP_CODE, then click “Open” button.

(4) When the file was loaded, then click “confirm” button.

(5) Click “RUN”, burn-in is in progress

6) burn-in is completed,

Electro help - Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

Dexter WCAD-Series Vended Washers - Dexter Speed Queen Maxi Load T 600 - Troubleshooting – Error codes

March 15, 2018, 11:11 pm

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Dexter WCAD-Series Vended Washers - Dexter Speed Queen Maxi Load T 600 - Troubleshooting – Error code causes and solutions 

Dexter Speed Queen Maxi Load T 600;TROUBLESHOOTING 

Machine does not start
Power Supply

Check these areas: Circuit breakers, Voltage, Power leads, Power connections. Is front display LED showing a dollar amount.
Door Switch

Check for continuity through door switch when door is closed. If no continuity, adjust or replace door switch.

Control Breaker or Fuse
Check 1.5 amp (T-1200. uses 2.5amp) breaker or fuse for continuity. If no continuity, replace breaker or fuse.
Control Transformer
Check voltage output from control transformer for 120VAC. If voltage is incorrect, replace transformer.
Coin Acceptor

Check coin switch to make sure coins trip switch and give continuity across switch when closed. If no continuity, adjust or replace switch.
Check PCB board

Check all wire connections for sure contacts.
Check wiring between PCB
Check data cable phone type connectors unplug and VFD and replug with power removed.
Check Relay PCB

Check all wire connections for sure contact.
Check Door Solenoid
Check that 120 v power is at solenoid after start button is pushed.

Machine will not accept and count coins
Coin Acceptor

Check coin acceptor switch for any type of blockage or damage. Clean, adjust or replace the acceptor.

Power Supply

Check these areas: Circuit breakers, Voltage, Power leads, Power connection
Door Closed Safety Switch
Check door closed switch at door hinge for proper operation.
Door Handle Closed Switch
Check single door closed switch at left side of door handle to close when handle is vertical.
Control Breaker or fuse
Check 1.5 amp (T-1200 uses 2.5 amp) breaker or fuse for continuity. If no continuity, replace breaker.
Main PCB; Replace

No hot water in detergent dispenser
Water Valve Coil

Check coil continuity at terminals and replace if no continuity. 120 V power only on for 20 second in wash bath.
Water Inlet

Check water inlet screens for blockage and clean screens if necessary.
Water

Check to insure that water is turned on and operating.
P-20

Wire Harness Check black & white harness.

Hot water does not enter tub in wash
Water Valve Coil

Check coil continuity at terminals and replace if no continuity. Check for 120 V power from main relay PCB
Water Inlet

Check water inlet screens for blockage and clean if necessary.
Water

Check to insure that water is turned on and operating.
Blk or Wht wire at main controller
Check black or white wires at Molex plug on PCB at main controller and at relay PCB.
Pressure Switch

Check pressure switch continuity between terminals . If no continuity, check pressure switch hose for obstruction. If hose okay, change pressure switch.

ERROR CODE CAUSES AND SOLUTION 

ERROR CODE F1

The door failed to close and lock or The door failed to remain locked during the cycle.
Check VFD fault code before turning off. Check to hear if door solonoid engaged. Turn off the power to the washer. Check wire connections to door /lock switches. Check wire connections from switches to controller. Check P-4 wire connections at PCB controller. Adjust the door lock mechanism.

ERROR CODE F2

The washer tub does not fill with water within 7 minutes. The wash cycle will continue. The F 2 will flash three times, then wait for 30 seconds. The error will clear
at the end of the cycle. Turn off the power to the washer. Check the operation of the water valves. Check the incoming water pressure. Check for blocked or restricted water flow.
Check to ensure the drain valve is functioning properly. This error will occur on 18# washers when water level is set for high (the pressure switch in 18# washer is only one level).
ERROR CODE F3

Memory error in controller. The memory checksum is wrong.
Check VFD fault code before turning off power. Try to clear the fault with the Palm. Try a soft Reset of the controller with the white button. If problem. Replace PCB controller.
ERROR CODE F4

Washer controller communication error
Check VFD fault code before turning off power. Try the data cable fi rst. Move around cable and remove any side loading tension from data cable connector ends. Check connection P25/24/23 to P15. Turn power back on to the washer. If the problem returns, replace the PCB washer controller.
ERROR CODE F5

Pressure Switch error (only OPL) - when the high level sensor indicates full but the lower one indicates empty.

The wash cycle will continue. The F 5 will fl ash three times, then wait for 30 seconds. The error will clear at the end of the cycle.
Check VFD fault code before turning off power. Check the pressure switch.(Ohm out contacts). Check pressure switch connections to ensure they are all making good contact. Check the Molex type harness connector to ensure no wire been pushed out of the Molex type housing that it is shorting or not connecting.
ERROR CODE F6

Wrong washer size for drive type.
Check VFD fault code before turning off power. If the controller was installed in a different size machine before being installed in this machine, a problem can occur. If someone has been doing repairs on the washer, check for the correct size drive. It can also be caused by pressure switch harness. Check to ensure the correct harness in installed. The control can be reset by holding program button on controller during startup (soft reset). Check orange wire at Molex connector on controller coming from pressure switch or replace pressure switch harness.

ERROR CODE F7

Wrong size drive installed Check VFD fault code before turning off power.Check to ensure all the harnesses are properly connected to the controller. Check to ensure the VFD drive horsepower is proper for this size of washer. The control can be reset by holding program button on controller during startup (soft reset) Check orange wires at molex connector on controller coming from pressure switch.
ERROR CODE F8

The washer tub does not empty within 7 minutes. The wash cycle will continue. The F 8 will flash three times, then wait for 30 seconds. The error will clear at the end of the cycle.
Check VFD fault code before turning off power. Check to ensure the drain valve is operating properly (slow drain has potential to cause this code). Check to ensure the pressure switch tube is clear of any blockage, and the pressure switch is operating properly. Check the pressure switch harness.
ERROR CODE F9

The washer tub does not reach the spin target frequency within 150 seconds. The wash cycle will continue. The F9 will fl ash three times, then wait for 30 seconds. The error will clear at the end of the cycle.
Check VFD fault code before turning off power. Check to ensure the drain valve is operating properly (slow drain has potential to cause this code). Check to ensure the pressure switch tube is clear of any blockage, and the pressure switch is operating properly. Check the pressure switch harness.
ERROR CODE F10

After a spin the washer tub does not stop within 150 seconds. Check VFD fault code before turning off power. Inspect the braking resistors and measure the resistance.
Check connecting wiring from braking resistor to the drive mounted in the top of the washer. Reset the drive and try again. Possibly incorrectly programmed drive.
ERROR CODE F11

The drive size setting has changed.
Check VFD fault code before turning off power. Check to ensure all the harnesses are properly connected to the controller. Check to ensure the drive horsepower is proper for this size of washer. If no one has worked on machine very recently then PCB controller or VFD may need to be replaced. Do a soft reset before and after either VFD replaced.

ERROR CODE F12

Washer controller internal error
Check VFD fault code before turning off power. Turn off the power to the washer. Wait one to two minute. Turn on the power to the washer.

ERROR CODE F13

The variable frequency drive (VFD) and the washer computer are not communicating.
Check the data communication cable between the washer computer and the variable frequency drive (VFD).
Step 1: Make sure the cable did not become unplugged during operation.
Step 2: Make sure that the cable is not being pulled sideways at either the washer controller, or the VFD, plug end. If both ends of the communications cable are plugged in the washer computer and VFD and there is no tension on the communications cable pulling it from side to side, then replace the cable.
Step 3: Inspect both female connection points at PCB controller and at VFD. These may need replacement if they cannot be reset.
ERROR CODE F14

Over-current on the drive or motor.
Step 1: Check to make sure the washer cylinder turns freely by hand. If it turns freely, continue to step 2. If it does not, remove the belt and see if the motor turns freely by hand. If the motor turns freely, then check for obstructions in the cylinder or check the bearings. If the motor does not turn freely, replace the motor.
Step 2: Check the motor wires for a short circuit between leads. If there are motor leads that have conductors touching, separate them and insulate them. If the wires are broken, splice them together or replace the motor.
Step 3: Check braking resistors to see if they measure the correct resistance. If a resistor does not measure the proper value, replace it.
ERROR CODE F15

The variable frequency drive (VFD) senses that the internal voltage is too high. The source of the problem can originate from two different areas.

Area 1: The input voltage can be too high, or there may be a high level of electrical noise.
Area 2: The motor can be generating a voltage that is acting like an input to the VFD output motor terminals.
Step 1: Measure the supply voltage to the VFD on the L1, L2 (or N), and L3 (if connected to three phrase power). the supply voltage should be from 187 to 264 VAC or 108 to 132 VAC for a 120 VAC VFD. Also make sure the supply wires on L1, L2 (or N) and L3 (if connected to three phase power are securely connected.
Step 2: Ch eck the braking resistor connections at the VFD. The terminal screws should be tight. Once of the braking resistor wires should be connected to terminal B2.
Step 3: Measure each braking resistor separately to make sure they are the correct resistance. (200 for 1 and 2 Hp VFD and 160 for 3 Hp VFD).
Step 4: If you have a 240 VAC, high leg voltage supply, try disconnecting the high leg. If this cures the problem, either leave the high leg disconnected, connect a transient voltage surge suppressor (with some form of filtering) at the voltage supply panel, connect a line choke on the high leg or install a VFD filter.

ERROR CODE F16

The temperature sensor inside of the variable frequency drive detects that the internal temperature is too high.
Step 1: Make sure the cooling fi ns on the VFD heatsink and the ventilation louvers on the VFD cooling fan cover are clean.

Step 2: Start a washer cycle and make sure the VFD cooling fan operates after the cylinder starts turning.
ERROR CODE F17

Overload of the drive or motor (Check drive fault code before powering down). Check the washer motor to ensure it turns freely. Check the wiring for loose connections to the drive and motor. Measure the braking resistor values. Check for damaged motor wires. Check V-Belt tension and adjust to 1” deflection at center. Check braking resistors.
ERROR CODE F18

Ground Fault to the drive Check VFD fault code before turning off power. Check the wiring connections to the drive and motor. Check the ground wiring of the drive, motor and incoming connection to ensure a proper ground is present. Check for damaged motor wires.
ERROR CODE F19

Low Voltage to the drive Check VFD fault code before turning off power. Turn the power off to the washer. Check the wiring connections to the drive and motor. If no problem is observed, turn on power to the washer and test.Measure the incoming line voltage.
ERROR CODE F20

Internal drive error Check VFD fault code before turning off power. Turn the power off to the washer. Wait one minute. Turn the power on to the washer. If problem reappears, contact your Dexter representative.
ERROR CODE F21

Data error on communications between the controller and drive Internal drive error # 32. This error also has CEXX errors associated with it that are presented on the drive display.
The CE errors are communications errors. Data Cable noise can cause the majority of these errors.Check VFD fault code before turning off power. Check the data cable between the controller and the drive. Replace data cable if it appears damaged and fault appears again. Please note that this fault will occur if you turned main power off and on too quickly.

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Xterra Fitness treadmill – Xterra -TR6.8 – How to access engineering mode – How to calibrate

March 15, 2018, 11:31 pm

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Xterra Fitness treadmill – Xterra -TR6.8 – How to access engineering mode – How to calibrate the treadmill – Error codes – LS – E1 – E2 – Treadmill Running belt adjustment – Running belt tracking – Running belt lubrication – LUBE Indication reset – Calibrating the treadmill

Xterra -TR6.8:Engineering mode and calibration 

If you want to set the Speed and Distance to Metric or if there is a problem with the speed and you would like to perform the calibration procedure, use the Engineering Mode. To enter Engineering Mode press, and hold for 5 seconds, the Start and Speed UP keys while installing the safety key. All the segments will light then the message window will display
software versions and tell you to press Enter.
* The display will ask for grade return. This will reset the incline to zero, when set to ON, when you stop a program.
* The message window will now be showing the setting for English (miles) or Metric (Kilometers) Use the UP/DOWN keys to select and press Enter
* The message window will ask to adjust the wheel size for calibration. Enter 63.
* The display will show a number for the lowest speed setting (for miles the number should be 0.5). Adjust the low speed setting with the UP/DOWN keys and press Enter.
* The display will show a number for the top speed setting (for Miles it should be 12.0).
* The display will ask for top incline setting, enter 15.
* Press Start to begin calibration. This is an automatic process, the belt will move and change speeds without warning. Be Careful. When calibration is done, the console will return to the startup screen

Maintenance Tips

Belt and Deck - Your treadmill uses a very high-efficient low-friction deck. Performance is maximized when the deck is kept as clean as possible. Use a soft, damp cloth or paper towel to wipe the edge of the belt and the area between the belt edge and frame. Also reach as far as practical directly under the belt edge. This should be done once every other month to extend belt and deck life. Use water only - no cleaners or abrasives. A mild soap and water solution along with a nylon scrub brush will clean the top of the textured belt.
Belt Dust - This occurs during normal break-in or until the belt stabilizes. Wiping excess off with a damp cloth will minimize buildup.
General Cleaning - Dirt, dust, and pet hair can block air inlets and accumulate on the running belt. On a monthly basis: vacuum underneath your treadmill to prevent buildup. Every other month, you should remove the black motor hood and carefully vacuum out dirt that may accumulate. UNPLUG POWER CORD BEFORE THIS TASK. There is a maintenance schedule/chart included under the Table of Contents for convenient record keeping.

Running Belt Adjustments

Tread-belt Tension Adjustment - Belt tension is not critical for most users. It is very important though for joggers and runners in order to provide a smooth, steady running surface. Adjustment must be made from the rear roller with the 6mm Allen wrench provided in the parts package. The adjustment bolts are located at the end of the step rails as shown in the diagram below. Tighten the rear roller only enough to prevent slippage at the front roller. Turn the tread-belt tension adjusting bolts 1/4 turn each and inspect for proper tension by walking on the belt and making sure it is not slipping or hesitating with each step. When an adjustment is made to the belt tension, you must be sure to turn the bolts on both sides evenly or the belt could start tracking to one side instead of running in the middle of the deck.

DO NOT OVERTIGHTEN– Over tightening will cause belt damage and premature bearing failure. If you tighten the belt a lot and it still slips, the problem could actually be the drive belt - located under the motor cover - that connects the motor to the front roller. If that belt is loose it feels similar to the walking belt being loose. Tightening the motor belt should be done by a trained service person.

Running belt Tracking Adjustment

The treadmill is designed so that the tread-belt remains reasonably centered while in use. It is normal for some belts to drift near one side while in use, depending on a user’s gait and if they favor one leg. But if during use the belt continues to move toward one side, adjustments are necessary.
SETTING TREAD-BELT TRACKING
An 6mm Allen wrench is provided for this adjustment. Make tracking adjustments on the left side bolt. Set belt speed at 3 mph. Be aware that a small adjustment can make a dramatic difference which may not be apparent right away. If the belt is too close to the left side, then turn the bolt only a 1/4 turn to the right (clockwise) and wait a few minutes for the belt to adjust itself. Continue to make 1/4 turns until the belt stabilizes in the center of the running deck.

If the belt is too close to the right side, turn the bolt counter-clockwise. The belt may require periodic tracking adjustment depending on use and walking/running characteristics. Some users may affect tracking differently. Expect to make adjustments as required to center the tread-belt. Adjustments will become less of a maintenance concern as the belt is used. Proper belt tracking is an owner responsibility common with all treadmills.
Running belt and Deck Lubrication Procedure

First, you want to clean between the belt and deck to remove any debris that may be trapped. Use a clean, non-fraying rag, t-shirt, or light towel. Halfway between the end of the treadmill and motor cover, shove the garment under the belt until you can grasp it on both sides of the belt. Drag the garment the length of the entire belt 1-2 times. Remove the garment.

Keeping the deck lubricated at the recommended intervals ensures the longest life possible for your treadmill. If the lubricant dries out, the friction between the belt and deck rises and places undue stress on the drive motor, drive belt and electronic motor control board, which could result in failure of these components.

The belt & deck come pre-lubricated and subsequent lubrication should be performed every 90 hours of use or if you notice that the deck is dry. It is recommended that you reach between the belt and deck to verify there is lubrication present, every other month. If you check and there isn’t any lubrication present, follow the procedure below even though the “Lube” indicator isn’t lit on the console. Otherwise, lubricate when the console’s lubrication reminder lights after 90 hours of use. Use the following procedure to apply the silicone lubricant:

1. Turn the power switch off and unplug the power cord from the wall outlet
2. Measure 18” from the edge of the motor cover; kneel down and reach under the belt approximately 4- 6” from one edge. Squirt a line of lubricant about 1/8” wide x 15” long in an “S” pattern perpendicular to the motor cover.
3. Repeat the process on the opposite side.
4. Plug the electrical cord back into the outlet and turn the power switch on.
5. Walk on the belt at a moderate speed for five minutes to evenly distribute the silicone lube.
6. Note: If the “Lube” message appears on the console, perform the following procedure to reset the message:
1. To enter the Engineering Mode Menu press and hold down the Start, Stop and Enter keys, then at the same time insert the safety key. Keep holding the keys down until the Display displays Engineering Mode Menu. Press the Enter key to access.
2. Press the Speed UP key (or Speed DOWN key to go backwards) until “Functions” appears; press Enter
3. Press the Speed UP key until “Reset Lube” message appears; press Enter
4. Press Stop to exit Engineering mode and resume use of your treadmill.

Error Messages
LS: The treadmill hasn’t received a speed signal for 8 seconds.
E1: Console memory malfunction or CPU problem.
E2: Incline position error.

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Panasonic TX-55DX650B LED TV – Power LED blinking [error] codes, hotel mode, data copy, System information, self check, SMPS schematic

March 19, 2018, 6:01 am

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1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.
2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.
3. After servicing, make the following touch current checks to prevent the customer from being exposed to shock hazards.
4. Always ensure cover label TBM4GU113 is correctly replaced before returning to customer.

Touch-Current Check
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a measuring network for touch currents between each exposed metallic part on the set and a good earth ground such as a water pipe.
3. Use Leakage Current Tester (Simpson 228 or equivalent) to measure the potential across the measuring network.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of the above measure.
6. The potential at any point (TOUCH CURRENT) expressed as voltage U1 and U2, does not exceed the following values:
For a. c.: U1 = 35 V (peak) and U2 = 0.35 V (peak);
For d. c.: U1 = 1.0 V,
Note:
The limit value of U2 = 0.35 V (peak) for a. c. and U1 = 1.0 V for d. c. correspond to the values 0.7 mA (peak) a. c. and 2.0 mA d. c.
The limit value U1 = 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for frequencies greater than 100 kHz.
7. In case a measurement is out of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer.

How to access System Information

1. While pressing [MENU] button on the remote control.

2. To select [ Help] and then to select [System Information]

How to exit
Press the [RETURN] button on the remote control.

Hotel Mode
1. Purpose: To Restrict a function for hotels.
2. Access command to the Hotel mode setup menu.
In order to display the Hotel mode setup menu,  enter the following command (within 2 second).
[TV] : Vol.[Down] + [REMOTE] : AV (3 times)
Then, the Hotel mode setup menu is displayed.

3. To exit the “Hotel mode”:
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control or pressing [EXIT] button on the remote control.

Data Copy by USB Memory
Purpose
a) Board replacement (Copy the data when exchanging A-board):
When exchanging A-board, the data in original A-board can be copied to USB Memory and then copy to new A-board.

Following data can be copied.

User setting data: (inc. Hotel mode setting data)
Channel scan data
Adjustment and factory preset data.

b) Hotel (Copy the data when installing a number of units in hotel or any facility):
When installing a number of units in hotel or any facility, the data in master TV can be copied to USB Memory and the copy to other TVs.

Following data can be copied.
User setting data: (inc. Hotel mode setting data)
Channel scan data.

Preparation
Make pwd file as startup file for (a) or (b) in an empty USB Memory.
1. Insert an empty USB Memory to your PC.
2. Right-click a blank area in a USB Memory window, point to New, and then click text document. A new file is created by default (New Text Document.txt).
3. Right-click the new text document that you just created and select rename, and then change the name and extension of the file to the following file name (a) or (b) and press ENTER.
File name:
(a) For Board replacement: boardreplace.pwd
(b) For Hotel: hotel.pwd

[Make only one file to prevent the operation error.
No any other file should be in USB Memory.]

Data Copy from TV set to USB Memory
1. Turn on the TV set.
2. Insert USB Memory with a startup file (pwd file) to USB Terminal.
On-screen Display will be appeared according to the startup file automatically.
3. Input a following password for (a) or (b) by using remote control.
(a) For Board replacement: 2770
(b) For Hotel: 4850
Data will be copied from TV set to USB Memory.
It takes around 1 to 2 minutes maximum for copying.
4. After the completion of copying to USB Memory, remove USB Memory from TV set.
5. Turn off the TV set.
Note:
Following new folder will be created in USB Memory for data from TV set.
(a) For Board replacement: user_setup
(b) For Hotel: hotel.

Data Copy from USB Memory to TV set
1. Turn on the TV set.
2. Insert USB Memory with Data to USB Terminal.
On-screen Display will be appeared according to the Data folder automatically.
3. Input a following password for (a) or (b) by using remote control.
(a) For Board replacement: 2771
(b) For Hotel: 4851
Data will be copied from USB Memory to TV set.
4. After the completion of copying to USB Memory, remove USB Memory from TV set.
(a) For Board replacement: Data will be deleted after copying (Limited one copy).
(b) For Hotel: Data will not be deleted and can be used for other TVs.
5. Turn off the TV set.
Note:
1. Depending on the failure of boards, function of Data for board replacement does not work.
2. This function can be effective among the same model numbers.

TNPA6263-POWER BOARD - Schematic and PWB

Self Check

How to access

Self-check indication only:

While pressing [VOLUME ( - )] button on the main unit, press [BLUE] button on the remote control.

Self-check indication and forced to factory shipment setting:

While pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.

How to exit

Switch off the power with the [POWER] button on the main unit.

If the CCU ports have been checked and found to be incorrect or not located then " - - " will appear in place of "O.K.".

Power LED blinking timing chart

When abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the defective block can be identified by number of blinking of the Power LED on the front panel of the unit.

LCD Panel Test Mode

To find the possible failure point where in LCD Panel or Printed Circuit Board when the abnormal picture is displayed.

How to Enter

While pressing [VOLUME ( - )] button of the main unit, press [YELLOW] button of the remote control three times.

How to Exit

Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.

How to confirm

If the abnormal picture is displayed, go into LCD Panel test mode to display the several test patterns.

And then, judge by the following method.

Still abnormal picture is displayed: The cause must be in LCD Panel.

Normal picture is displayed: The cause must be in A board.

Remarks: The test pattern is created by the circuit in LCD Panel.

In LCD Panel test mode, this test pattern is displayed unaffected by signal processing for RF or input signal.

If the normal picture is displayed, LCD Panel must be okay and the cause of failure must be in A board.

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Philips 221TE4l 21.5 inch full HD LCD TV Power board schematic – 715G4313

March 21, 2018, 9:27 pm

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221TE4L (715G4313-P03-000-0030) – Philips 21 inch LCD TV SMPS circuit diagram

Used ICs: LD7576AGR, AOT8N65(FET), RT8482GS

Power board PWB and schematic

Click on the pictures to magnify

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Hitachi 50V500/LC37, 60V500A/LC37 NTSC TV adjustments - Power board circuit diagram

March 24, 2018, 12:22 am

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Lamp replacement, memory initialization SMPS schematic

Leakage Current Hot Check
Plug the AC line cord directly into a 120V AC 60Hz outlet (do not use an isolated transformer for this check). Turn the AC power ON. Using a Leakage Current Tester (Simpson’s Model 228 or equivalent), measure for current from all exposed metal parts of the cabinet (antennas, screw heads, overlays, control shafts, etc.) particularly any exposed metal part having a return path to the chassis or to a known earth ground (water pipe, conduit, etc.). Any current measured must not exceed 0.5 MIU.

Leakage Current Cold Check
With the AC plug removed from the 120V AC 60Hz source, place a jumper across the two plug prongs. Using an insulation tester (DC500V), connect one lead to the jumper AC plug and touch the other lead to each exposed metal part (antennas, screw heads, metal overlays, control shafts, etc.), particularly any exposed metal part having a return path to the chassis should have a minimum resistor reading of 2.4M and a maximum resistor reading of 5.2M. Any resistance value below or above this range indicates an abnormality which requires corrective action. An exposed metal part having a return path to the chassis will indicate an open circuit.

The lamp in this product contains Mercury.  Dispose of properly in accordance with applicable environmental laws. For Recycling and Disposal information, contact your respective governmental agencies or the Electronic Industries Alliance at www.eiae.org (in the U.S.) or Electronic Product Stewardship Canada at www.epsc.ca (in Canada).

Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.

LAMP REPLACEMENT

Lamp Life
The lamp life may vary based on usage of the LCD Rear PTV. Turning on and off frequently may shorten the life of the lamp.

Lamp Replacement
After extended use, if the TV picture turns dark, the color looks unusual or LAMP INDICATOR light turns on, then it is time to replace the lamp with a new lamp.

The lamp gets very hot! The lamp may explode if improperly handled. To avoid injury, please observe the following
precautions.
• Do not open lamp compartment or attempt to remove lamp assembly unless the lamp assembly is being replaced.
• Unplug the product’s power cord from the AC outlet before attempting to replace the lamp assembly.
• If the lamp is in use when failure occurs or if the lamp has exploded, wait at least 30-45 minutes for the lamp to cool before opening the lamp compartment or touching the lamp assembly or any broken pieces.
• Broken lamp pieces can cause injury. Handle with gloves to avoid cuts.
• Do not place any foreign objects inside the lamp compartment.
• When installing a new lamp, follow handling instruction included with the new lamp. Do not touch glass surface of new lamp.
• The lamp in this product contains Mercury. Dispose of properly in accordance with applicable environmental laws. For Recycling and Disposal information, contact your respective governmental agencies or the Electronic Industries Alliance at www.eiae.org (in the U.S.) or Electronic Product Stewardship Canada at www.epsc.ca (in Canada).
CAUTION!
A ”LAMP” indicator will light when lamp becomes hot. Unplug product’s power cord from the AC outlet and allow lamp to cool for at least 30-45 minutes. If “LAMP” indicator is still lit, check the lamp unit assembly.

TYPE NAME: LC37 LAMP ASSEMBLY
PART NUMBER: UX21511

Power board schematic

P.W.B. ADJUSTMENT

Memory Initialization: Adjustment Procedure
(1) Enter I2C mode from the front panel by pressing and holding the INPUT and the POWER button for two seconds, then release.
Note: When entering the I2C menu mode, make sure to wait about two minutes after power off. If entering the I2C menu mode immediately after power off, the I2C menu page will appear but remote control operation will not work.
(2) Receive signal on the main picture. (NTSC, SDTV or HDTV).
Some menu pages have I2C adjustments for SDTV and HDTV. The set will automatically allow you to set these items only when a SDTV or HDTV signal is input to
the COMPONENT jacks on the back of the TV.

(3) Check the OSD according to table on page 61~87, using , buttons on the Remote Control to scroll down and cursor [right]  and hold for two seconds to enter the selected.

 Device.

(4) Press the EXIT button to exit I2C ADJUST mode.
(5) Press the EXIT button again to EXIT the I2C menu.

FACTORY PRESET (1)
(1) Cursor right () to select factory reset (Fact Reset) of the OSD and check that the set returns to delivery settings (CH 03).
(2) Do not unplug the set until this operation is completed and do not perform any key operation either, after this operation each setting is reset delivery settings automatically.

[When exchanging microprocessor and TV is turned on for first time, it requires initialization of Memory Initial of I2C. Enter to I2C Adjustment mode and reset Memory Initialize.]

RGB Amplitude Adjustment
Preparation for adjustment
(1) Recall user menu and select ‘Video’ _ ‘Picture Mode’ _ ‘Day’ _ ‘Reset’.
(2) Input 525p(480p) of RGB amplitude adj. signal into INPUT1 (Component) input.
Adjustment procedure
(1) Receive 525p(480p) signal (ASPECT 16:9 Standard).
(2) Select ‘RGB (480P)’ from Service Adj. Menu.
(3) Press and hold the “RIGHT ” cursor on the remote for 2 seconds or more to perform automatic adjustment.
(4) Wait until ‘Auto Adjusting’ OSD is disappeared.

Sub-contrast adjustment
-Preparation
(1) Receive Sub-contrast adjustment signal.
-Adjustment
(1) Select ‘SUB CONTRAST’ of Service Adj. Menu.
(2) Press “RIGHT" for over 2 seconds to perform automatic adjustment. When it’s completed, ‘Auto Adjusting’ on the screen will be disappeared.

Electro help - Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

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Magnavox. Emerson and Funai 32 inch LCD TVs – service mode, firmware update, power board schematics and power supply troubleshooting

March 30, 2018, 10:57 pm

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Electrical adjustments are required after replacing circuit components and certain mechanical parts. It is important to perform these adjustments only after all repairs and replacements have been completed.

Do not attempt these adjustments unless the proper equipment is available

TYPE A
2ME303V/F7 MAGNAVOX (Serial No.: ME1, ME2)
LF320EM4 EMERSON (Serial No.: ME1, ME3)
LF320EM4F EMERSON (Serial No.: ME1, ME2)
LF320FX4F FUNAI (Serial No.: ME1)

TYPE B
LF320EM4 EMERSON (Serial No.: DS1)
LF320EM4F EMERSON (Serial No.: DS1)
LF320FX4F FUNAI (Serial No.: DS1, DS2)

How to set up the service mode
1. Turn the power on.
2. Press [MENU] button to display Setup menu.
3. Select “Features”.
4. Select “Software Upgrade”.
5. Select “Current Software Info”.
6. Press [0], [4], [2], [5], [7], [4] and [INFO] buttons on the remote control unit in this order.

The service mode screen appears.

Purity Check Mode
This mode cycles through full-screen displays of red, green, blue, and white to check for non-active pixels.
1. Enter the service mode.
2. Each time the [7] button on the remote control unit is pressed, the display changes.

To cancel or to exit from the Purity Check Mode, press [CH RETURN] or [PREV CH] button.

The VCOM Adjustment should be performed when replacing the Digital Main CBA for LF320EM4(Serial No.: DS1), LF320EM4F(Serial No.: DS1), and LF320FX4F(Serial No.: DS1, DS2).

1. Operate the unit for more than 60 minutes.
2. Set the color analyzer at the zero point calibration and bring the optical receptor pointing at the center of the LCD-Panel.
Note: The optical receptor must be set perpendicular to the LCD Panel surface.
3. Enter the service mode.
4. Press [2] button on the remote control unit.
5. Press [CHANNEL UP/DOWN] buttons on the remote control unit so that the color analyzer value becomes minimum.
6. To cancel or to exit from the VCOM Adjustment, press [CH RETURN] or [PREV CH] button.

White Balance Adjustment

The White Balance Adjustment should be performed when replacing the LCD Panel or Digital Main CBA.

Symptom of Misadjustment: White becomes bluish or reddish.

1. Operate the unit for more than 60 minutes.
2. Enter the service mode.
3. Press [VOLUME DOWN] button three times on the remote control unit to select “Drive setting” mode. “Drive” appears in the screen.
4. Set the color analyzer at the CHROMA mode and zero point calibration. Bring the optical receptor pointing at the center of the LCD-Panel.

[The optical receptor must be set perpendicularly to the LCD Panel surface.]
5. Press [3] button to select the “HDB” for High Drive Blue adjustment. (“HDB” appears in the screen.)

7. Press [CHANNEL UP/DOWN] buttons to adjust the color temperature becomes 12000°K (x= 0.272 / y= 0.278 ± 0.003).
8. Press [1] button to select the “HDR” for High Drive Red adjustment (“HDR” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature.
9. If necessary, adjust the “HDB” or “HDR” again.
10. Press [6] button to select the “LDB” for Low Drive Blue adjustment (“LDB” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature.

11. Press [4] button to select the “LDR” for Low Drive Red adjustment (“LDR” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature.
12. If necessary, adjust the “LDB” or “LDR” again.
13. Press [VOLUME DOWN] button to shift to the “Debugging Message” mode.
If there is no message under “[WB]” section, this adjustment completes.
If “Drive settings are NG. Retry again.” Is displayed, repeat above steps from 5. to 12. Then check “Debugging Message” again. If “Drive settings are NG. Retry again.” is displayed, replace the LCD Panel or Digital Main CBA.
14. To cancel or to exit from the White Balance Adjustment, press [CH RETURN] or [PREV CH] button.

TO INITIALIZE THE LCD TV

The purpose of initialization is to place the set in a new out of box condition. The customer will be prompted to select a language and program channels after the set has been initialized.
To put the program back at the factory-default, initialize the LCD TV using the following procedure.

[Disconnect any device from the USB Port before you conduct on this procedure.]

1. Turn the power on.
2. Enter the service mode.
- To cancel the service mode, press [Power] button on the remote control unit.
3. Press [BACK] button to enter the Control Panel Key Confirmation Menu.
4. Press any button on the control panel.
5. Press [INFO] button to proceed with the self check mode.
6. Make sure to confirm the “INITIALIZED FINISH” appears in the green screen.
7. Unplug the AC Cord and plug it back on again.

SMPS SCHEMATIC

There are two types of power board fitted with these TVs.

Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.If Main Fuse (F602) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.

For continued protection against risk of fire, replace only with same type 2.5A, 250V fuse.

The voltage for parts in hot circuit is measured using hot GND as a common terminal.

Type 1 PWB and Schematic

Type 2 PWB and schematic

Click on the pictures to zoom in

Power board Troubleshooting

* The power cannot be turned on

Is the fuse (F602) normal? – No > The fuse blows out.
Is normal state restored when once unplugged power cord is plugged again after several seconds? – NO

Check if there is any leak or short-circuit on the primary circuit component and repair it if defective.
(C607, D601, D602, D603, D604, D605, D607A, D608, D609A, D621, D623, Q601, Q602, Q621, R611, T601)

If yes:

Is the P-ON+21V line voltage normal?

If yes

Check each rectifying circuit of the secondary circuit and repair it if defective.

If NO:

Check if there is any leak or short-circuit on the primary circuit component and repair it if defective.
(C607, D601, D602, D603, D604, D605, D607A, D608, D609A, D621, D623, Q601, Q602, Q621, R611, T601)

The fuse blows out

Check if there is any leak or short-circuit on the primary circuit component and repair it if defective.

Check if there is any leak or short-circuit on the each rectifying circuit component of secondary side and repair it if defective.

Make sure to repair the primary circuit component before replacing the fuse (F602).

The output voltage fluctuates.

Does the photocoupler circuit on the secondary side operate normally?

NO?

Check IC602, D660, D661, Q653 and their periphery circuit. Repair it if defective.

If yes:

Check IC602, D605, D607A, D608, D609A, D610, D621, D623, Q601, Q602, Q621 and their periphery circuit.
Repair it if defective.

When buzz sound can be heard in the periphery of power circuit.

Check if there is any short-circuit on the rectifying diode and the circuit in each rectifying circuit of the secondary side.
Repair it if defective. (D650, D651, D653, D655, Q656, Q658)

P-ON+21V is not output.

Is approximately +21V voltage supplied to the cathode of D650(D651)?

NO?

Check D650, D651, C651, C652, C653 and their periphery circuit. Repair it if defective.

If yes:

Check if there is any leak or short-circuit on the load circuit. Repair it if defective.

AMP+13V is not output.

Is approximately +13V voltage supplied to the cathode of D653(D655)?

NO?

Check D653, D654, D655, C654, C655 and their periphery circuit. Repair it if defective.

If yes:

Check if there is any leak or short-circuit on the load circuit. Repair it if defective.

AL+3.3V is not output.

Is approximately +13V voltage supplied to the collector of Q656?

NO?

Is approximately +13V voltage supplied to the emitter of Q658?  If yes: Replace Q658

If NO: 

Check D653, D654, D655, C654, C655, R690 and their periphery circuit. Repair it if defective.

Approximately +13V voltage is at  the collector of Q656

Is approximately +4V voltage supplied to the base of Q656? NO? Check D662 and their periphery circuit. Repair it if defective.

If yes:

Replace Q656.

Firmware Update Procedure
User Upgrade (Filename example: TVNB012_00_UF_XX91_AC.ecc)
Upgrade the firmware only. The setting values will not be initialized.
The User Upgrade and the Firmware Upgrade (Factory Upgrade) will be done by the same file. If you want to upgrade the firmware and initialize the setting values also, add “FACT_” at the beginning of the filename.
If you want to upgrade the firmware only and leave the setting values as they are, eliminate the “FACT_” from the filename.

Update procedure
1. Turn the power on.
2. Press [MENU] button to display Menu.
3. Select “Features”.
4. Select “Software Upgrade”.
5. Select “Upgrade” to display Upgrade screen.
6. Press [OK] button to display Software Upgrade screen.
7. Select “USB” and press [OK] button.
8. Insert the USB storage device to the USB port

9. Select “Check” and press [OK] button.
10. Select “Upgrade” and press [OK] button to start software upgrade.

11. The update will start and the upgrade screen will appear.

[If the screen isn’t displayed, repeat from step 1.]

12. When the firmware update is completed, the following will appear in the screen.

Remove the USB storage device from the USB port.
Turn the power off and turn the power on again.

Factory Upgrade (Firmware Upgrade/Flash Upgrade)
Firmware Upgrade(Filename example: FACT_TVNB012_00_UF_XX91_AC.ecc)

Upgrade the firmware and initialize the setting values.
The User Upgrade and the Firmware Upgrade (Factory Upgrade) will be done by the same file. If you want to upgrade the firmware and initialize the setting values also, add “FACT_” at the beginning of the filename.
If you want to upgrade the firmware only and leave the setting values as they are, eliminate the “FACT_” from the filename.
Flash Upgrade
(Filename example: ALL_TVNB012_00_UF_XX91_AC.ecc)
Upgrade the firmware and initialize the setting values along with the factory default such as White Balance, etc.
Before the upgrade, you will need to make a note of all the factory default so you will be able to set it back on the TV after the initialization.
The Flash Upgrade will be done by it's unique file.
The User Upgrade/Firmware Upgrade (Factory Upgrade) file cannot be used for this upgrade.

Procedure
1. Turn the power off.
2. Insert the USB storage device to the USB port.

3. Turn the power on.

4. The update will start and the upgrade screen will appear.

5. When the firmware update is completed, the relevant screen will appear in the screen.

Remove the USB storage device from the USB port.
Turn the power off and turn the power on again.
Service mode initial screen with a word “INITIALIZED” will appear in the screen. The color of the word “INITIALIZED” will change from red to green when initialization is completed.

Electro help - Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

Philips 22PFA5403S/67, 22PFA5403S/70 – how to enter the service mode, firmware update, power board schematic

April 1, 2018, 11:31 pm

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Philips TPH18.2A chassis

Service Modes
The Service Mode feature is split into following parts
 Factory Mode.
 Customer Service Mode (CSM).
Factory mode offer features, which can be used by the Service engineer to repair/align a TV set. Some features are
 Make alignments (e.g. White Tone).
Display information.

The CSM is a Service Mode that can be enabled by the consumer. The CSM displays diagnosis information, which the customer can forward to the dealer or call centre. The information provided in CSM and the purpose of CSM is to:
 Increase the home repair hit rate.
 Decrease the number of nuisance calls.
 Solved customers’ problem without home visit.
How to Activate the Factory mode

To activate the Factory mode, use the following method
 Press the following key sequence on the remote control transmitter: from the “Menu/Home” press “1999”, directly followed by the “Back/Return” button. Do not allow the display to time out between entries while keying the sequence.
After entering the Factory mode, we can see many items displayed, use the UP/DOWN keys to display the next/previous menu items.

To Exit the Factory mode
 Select “EXIT” from the menu and press the “OK” button.
Note: When the TV is switched “off” by a power interrupt, or normal switch to “stand-by” while in the factory mode, the TV will show up in “normal operation mode” as soon as the power is supplied again. The error buffer will not be cleared.

Customer Service Mode (CSM)
Purpose
The call centre can instruct the customer (by telephone) to enter CSM in order to identify the status of the set. This helps the call centre to diagnose problems and failures in the TV set before making a service call.
The CSM is a read-only mode; therefore, modifications are not possible in this mode.
How to Activate CSM
To activate CSM, press the following key sequence on a standard remote control transmitter: from the “Menu/Home” press“456987” (do not allow the display to time out between entries while keying the sequence). After entering the Customer Service Mode, the following items are displayed.
Use the Right/Left keys to display the next/previous menu items Note: Activation of the CSM is only possible if there is no (user) menu on the screen.

By means of the “CURSOR-DOWN/UP” knob (or the scroll wheel) on the RC-transmitter, can be navigated through the menus.

How to Exit CSM
To exit CSM, use one of the following methods.
 Press the MENU/HOME button on the remote control transmitter.
 Press the POWER button on the remote control transmitter.
 Press the POWER button on the television set.

Power board circuit diagram

Software Upgrading
Ready for F/W Upgrade
1. Prepare a USB memory (File format: FLAT, Size: 1G~8G).
2. Copy the software (.bin file) to USB flash disk (root directory).
3. Rename the file name to “image.bin”.
4. Insert the USB memory stick that contains the software update files in TV’s USB 2.0 port.
F/W Upgrade
1. Power off then power on the TV. The TV will detect the USB memory stick automatically.

2. When the TV software is updated, please reboot the TV. Remove your USB flash drive.
3. We can enter in CSM mode to check the current software version.
Caution: Please make sure that software upgrade is finished before unplug the USB and AC power.
 Check the SW version
1. After burning software, restart the TV.
2. Press “Menu/Home+456987”, enter Customer Service Mode to check if the software version is correct.

Electro help - Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

Philips 22PFT5403/56, 24PFT4233/98 – How to enter the service mode – SMPS schematic, firmware update

April 2, 2018, 12:28 am

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Applicable to - Philips22PFT5403/98, 22PFT5403S/98, 24PFT4233S/98, 24PFT4233/98

TPS18.1A LA- Chassis

Video formats

Resolution — Refresh rate:
• 480i - 60 Hz
• 480p - 60 Hz
•576i - 50 Hz
• 576p - 50 Hz
• 720i - 50 Hz, 60 Hz
• 1080i - 50 Hz, 60 Hz
• 1080p - 50 Hz, 60 Hz

TV system: NTSC, SECAM, PAL, DVB-T/T2
Video Playback: NTSC, SECAM, PAL

Computer formats
Resolution — Refresh rate:
• 640 x 480 - 60 Hz
• 800 x 600 - 60 Hz
• 1024 x 768 - 60 Hz
• 1360 x 768 - 60 Hz
• 1920 x 1080 - 60 Hz

Power supply
• Mains: 110-240V, 50-60Hz
• Standby power consumption: ≤0.5W

Power consumption:
– 22PFT54x3: 42W
– 24PFT4233: 36W

Service Modes
The Service Mode feature is split into following parts:
 Factory Mode.
 Customer Service Mode (CSM).
Factory mode offer features, which can be used by the Service engineer to repair/align a TV set. Some features are:
 Make alignments (e.g. White Tone).

Display information.

The CSM is a Service Mode that can be enabled by the consumer. The CSM displays diagnosis information, which the customer can forward to the dealer or call centre. The information provided in CSM and the purpose of CSM is to,

Increase the home repair hit rate

Decrease the number of nuisance calls

Solved customers’ problem without home visit

[For the new model range, a new remote control (RC) is used with some renamed buttons. This has an impact on the activation of the Service modes. For instance the old “MENU” button is now called “HOME” (or is indicated by a “house” icon)]

Factory mode:
Purpose
 To perform extended alignments.

How to Activate the Factory mode

To activate the Factory mode, use the following method:
 Press the following key sequence on the remote control transmitter: from the “Menu/Home” press “1999”, directly followed by the “Back/Return” button. 

Do not allow the display to time out between entries while keying the sequence.
After entering the Factory mode, we can see many items displayed, use the UP/DOWN keys to display the next/previous menu items.

How to Exit the Factory mode
 Select EXIT from the menu and press the “OK” button.
Note: When the TV is switched “off” by a power interrupt, or normal switch to “stand-by” while in the factory mode, the TV will show up in “normal operation mode” as soon as the power is supplied again.

715G7735 PSU (For 24” 4233 Series) -  SMPS schematic

Schematic Notes
• All resistor values are in ohms, and the value multiplier is often used to indicate the decimal point location (e.g. 2K2 indicates 2.2 kΩ).
• Resistor values with no multiplier may be indicated with either an “E” or an “R” (e.g. 220E or 220R indicates 220Ω)

• All capacitor values are given in micro-farads (µ = x10-6), nano-farads (n = x10-9), or pico-farads (p = x10-12).
• Capacitor values may also use the value multiplier as the decimal point indication (e.g. 2p2 indicates 2.2 pF).
• An “asterisk” (*) indicates component usage varies.

Customer Service Mode (CSM)
Purpose
The call centre can instruct the customer (by telephone) to enter CSM in order to identify the status of the set. This helps the call centre to diagnose problems and failures in the TV set before making a service call.
The CSM is a read-only mode, therefore, modifications are not possible in this mode.
How to Activate CSM
To activate CSM, press the following key sequence on a standard remote control transmitter: “Menu/Home +456987+Back” (do not allow the display to time out between entries while keying the sequence). 

After entering the Customer Service Mode, the following items are displayed. 

Use the UP/DOWN keys to display the next/previous menu items.
Note:Activation of the CSM is only possible if there is no (user) menu on the screen.

How to Navigate
By means of the “CURSOR-DOWN/UP” knob (or the scroll wheel) on the RC-transmitter can be navigated through the menus.

How to Exit CSM
To exit CSM, use one of the following methods.Press the MENU/HOME button on the remote control transmitter.Press the POWER button on the remote control transmitter.Press the POWER button on the television set.

Software Upgrading
1. Prepare a USB memory (File format: FLAT, Size: 1G~8G).
2. Copy the software to USB flash disk (root directory).
3. Switch off the TV and Insert the USB memory stick that contains the software update files in the TV’s USB 2.0 port.
Note the version of this F/W before you change the software file name.

1. Power off then power on the TV. The TV will detect the USB memory stick automatically. Then a window jumps out.

2. Press “Confirm” to start the update.
3. When the TV software is updated, reboot the TV. Remove your USB flash drive.
4. We can enter in CSM mode to check the current software version.
Caution: Please make sure that software upgrade is finished before unplug the USB and AC power.

Check the SW version
1. After burning software, restart the TV
2. Press “Menu/Home +456987+Back”, enter Customer Service Mode to check if the software version is correct.

Electro help - Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

Philips OLED TVs – Service mode, error codes, panel codes, Factory mode and software update

April 4, 2018, 1:38 am

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Applicable to: 

43PUS7303/12,49PUS7503/12, 50PUS7303/12, 55PUS7303/12, 55PUS7503/12, 65PUS7303/12, 65OLED873/12, 65OLED973/12

TPM18.1E LA-Chassis

Service Modes
The Service Mode feature is split into following parts:
Service Alignment Mode (SAM). Factory Mode.
Customer Service Mode (CSM).SAM and the Factory mode offer features, which can be used by the Service engineer to repair/align a TV set.

SAM and the Factory mode offer features, which can be used by the Service engineer to repair/align a TV set. Some features are:
To Make alignments (e.g. White Tone), reset the error buffer (SAM and Factory Mode).
To Display information (“SAM” indication in upper right corner of screen, error buffer, software version, operating hours, options and option codes, sub menus).

The CSM is a Service Mode that can be enabled by the consumer. The CSM displays diagnosis information, which the customer can forward to the dealer or call centre. In CSM mode, “CSM”, is displayed in the top right corner of the screen. The information provided in CSM and the purpose of CSM is to:
 Increase the home repair hit rate.
 Decrease the number of nuisance calls.
 Solved customers’ problem without home visit.

For the new model range, a new remote control (RC) is used with some renamed buttons. This has an impact on the activation of the Service modes. For instance the old “MENU” button is now called “HOME” (or is indicated by a “house” icon).

Service Alignment Mode (SAM)

Purpose
 To modify the NVM.
 To display/clear the error code buffer.
 To perform alignments.
Specifications
 Operation hours counter (maximum five digits displayed).
 Software version, error codes, and option settings display.
 Error buffer clearing.

Option settings.
Software alignments (White Tone).
NVM Editor.
Set screen mode to full screen (all content is visible.

How to Activate SAM
To activate SAM, use one of the following methods: Press the following key sequence on the remote control transmitter: “062596”, directly followed by the “INFO/OK” button. Do not allow the display to time out between entries while keying the sequence.
Or via ComPair.

After entering SAM, the following items are displayed, with “SAM” in the upper right corner of the screen to indicate that the television is in Service Alignment Mode.

How to Navigate
 In the SAM menu, select menu items with the UP/DOWN keys on the remote control transmitter. The selected item will be indicated. When not
all menu items fit on the screen, use the UP/DOWN keys to display the next/previous menu items

With the “LEFT/RIGHT” keys, it is possible to:
 (De) activate the selected menu item.
 (De) activate the selected sub menu.
 Change the value of the selected menu item.
 When you press the MENU button once while in top level SAM, the set will switch to the normal user menu (with the SAM mode still active in the background).

How to Store SAM Settings
To store the settings changed in SAM mode (except the RGB Align settings), leave the top level SAM menu by using the POWER button on the
remote control transmitter or the television set. The mentioned exceptions must be stored separately via the STORE button.

How to Exit SAM
Use one of the following methods:
 Switch the set to STANDBY by pressing the mains button on the remote control transmitter or the television set.
 Via a standard RC-transmitter, key in “00” sequence.
Note: When the TV is switched “off” by a power interrupt while in SAM, the TV will show up in “normal operation mode” as soon as the power is
supplied again. The error buffer will not be cleared.

[Under main menu “NVM editor”, you can use the UP/DOWN keys to view and change the set Type number, the set Production code or the 18AC of a part.(The NVM-editor still has the same function as before, alpha-numeric entry.]

Factory mode

Purpose
 To perform extended alignments

Specifications
 Displaying and or changing Panel ID information.
 Displaying and or changing Tuner ID information.
 Error buffer clearing.
 Various software alignment settings.
 Testpattern displaying.

Public Broadcasting Service password Reset. etc.

How to Activate the Factory mode
To activate the Factory mode, use the following method:
l Press the following key sequence on the remote control transmitter: from the “menu/home” press “1999”, directly followed by the “Back/Return” button. Do not allow the display to time out between entries while keying the sequence.
After entering the Factory mode, we can see many items displayed, use the UP/DOWN keys to display the next/previous menu items.

How to Exit the Factory mode
Use one of the following methods:
 Select EXIT_FACTORY from the menu and press the “OK” button.
Note: When the TV is switched “off” by a power interrupt, or normal switch to “stand-by” while in the factory mode, the TV will show up in “normal operation mode” as soon as the power is supplied again. The error buffer will not be cleared.

Customer Service Mode (CSM)

Purpose
The Customer Service Mode shows error codes and information on the TVs operation settings. The call centre can instruct the customer (by telephone) to enter CSM in order to identify the status of the set.This helps the call centre to diagnose problems and failures in the TV set before making a service call.
The CSM is a read-only mode; therefore, modifications are not possible in this mode.

Specifications
 Ignore “Service unfriendly modes.

Line number for every line (to make CSM language independent).
Set the screen mode to full screen (all contents on screen is visible).
After leaving the Customer Service Mode, the original settings are restored.
Possibility to use “CH+” or “CH-” for channel surfing, or enter the specific channel number on the RC.

How to Activate CSM
To activate CSM, press the following key sequence on a standard remote control transmitter: “123654” (do not allow the display to time out
between entries while keying the sequence). After entering the Customer Service Mode, the following items are displayed. use the Right/Left keys
to display the next/previous menu items
Note: Activation of the CSM is only possible if there is no (user) menu on the screen.

How to Navigate
By means of the “CURSOR-DOWN/UP” knob (or the scroll wheel) on the RC-transmitter, can be navigated through the menus.

How to Exit CSM
To exit CSM, use one of the following methods.
 Press the MENU/HOME button on the remote control transmitter.
 Press the POWER button on the remote control transmitter.
 Press the POWER button on the television set..

Software Upgrading, Error code and Panel Code

Ready for F/W Upgrade

1.Rename the software as “autorun.upg”.
2. Prepare a USB memory (File format: FLAT, Size: 1G~8G).
3. Copy the software to USB flash disk (root directory).
Note the version of this F/W before you change the software file name.

1.Plug the USB memory on the USB port on the side I/O port of TV (Please connect to USB 2.0 port, not recommend USB 3.0 port.).
2. AC on (Power plug).
3. TV will take a few minutes the downloading to detect the software, and then upgrade automatically as detect the software.

4. Press OK to start software upgrade.

5. Upgrade in progress

Check the SW version

After burning software, TV will restart.
Press “123654”, enter Customer Service Mode to check if the software version is correct.
Caution: Please make sure that software upgrade is finished before unplug the USB and AC power.

Error Code

Error codes are required to indicate failures in the TV set. In principle a unique error code is available for every:
• Activated (SW) protection.
• Failing I2C device.
• General I2C error.
The last five errors, stored in the NVM, are shown in the Service menu’s. This is called the error buffer.
The error code buffer contains all errors detected since the last time the buffer was erased. The buffer is written from left to right. When an error occurs that is not yet in the error code buffer, it is displayed at the left side and all other errors shift one position to the right.
An error will be added to the buffer if this error differs from any error in the buffer. The last found error is displayed on the left.
An error with a designated error code never leads to a deadlock situation. It must always be diagnosable (e.g. error buffer via OSD or blinking LED).
In case a failure identified by an error code automatically results in other error codes (cause and effect), only the error code of the MAIN failure is displayed.

How to Read the Error Buffer [On screen via the SAM/CSM (if you have a picture)]

ERROR: 000 000 000 000 000: No errors detected
 ERROR: 013 000 000 000 000: Error code 13 is the last and only detected error
 ERROR: 034 013 000 000 000: Error code 13 was detected first and error code 34 is the last detected (newest) error
 Via the blinking LED procedure (when you have no picture.

In this chassis only “layer 2” error codes are available and point to problems on the SSB. They are triggered by LED blinking when CSM is activated. Only the following layer 2 errors are defined.

How to Clear the Error Buffer

The error code buffer is cleared in the following cases:
 By using the CLEAR command in the SAM menu
 By using the CLEAR command in the Factory mode:
 By using the following key sequence on the remote control transmitter: “062599” directly followed by the OK button.
 If the contents of the error buffer have not changed for 50 hours, the error buffer resets automatically.
Note: If you exit SAM by disconnecting the mains from the television set, the error buffer is not reset.

Panel Code
Press the following key sequence on a standard RC transmitter: “062598” directly followed by MENU and “xxx”, where “xxx” is a 3 digit decimal value
of the panel type: see column “Display Code” in below tab. After resetting the Display Code, restart the set immediately.

Electro help - Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

AKAI TFT LCD TV 26 inch NTSC PIP AC100V-240 V AC USA – Power board circuit diagram, software update, V-Chip password change and more

April 9, 2018, 10:52 pm

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Akai 26Inch NTSC TV - software update, V Chip password change, Power board schematic, Universal remote control set-up code list and more....

Used ICs: MT8205G, AT24C02, MX29LV160BBTC. LP2996, AZ1117/H, WM8776, MX232A, ISAV330

Operation of LCD-TV
1. After turning on power switch, power board sends 5Vst-by Volt to Micro Processor IC waiting for ON signals from Key Switch or Remote Receiver.
2. When the ON signal from Key Switch or Remote Receiver is detected, Micro Processor will send ON Control signals to Power. Then Power sends (5Vsc,
12Vsc, 24V and RLY ON, Vs ON) to PCBs working. This time VIF will send signals to display back light, OSD on the panel and start to search available
signal sources. If the audio signals input, them will be amplified by Audio AMP and transmitted to Speakers.
3. If some abnormal signals are detected (for example: over volts, over current, over temperature and under volts), the system will be shut down by Power off.

Basic display theory.
When an electrical field is applied to the LC planes, the LC molecules re-align themselves so that they are parallel to the electrical field. This electrical process
is known as twisted nematic field effect or TNFE. In this alignment, polarized light is not twisted as it passes through the LC material  If the front polarizer is oriented perpendicular to the rear polarizer, light will pass through the energized display but will be blocked by the rear polarizer. An LCD in this form is acting as a light shutter.
Displays with variable characters are created by selectively etching away the conductive surface that was originally deposited on the glass. Etched areas become the display’s background; unetched areas become the display’s characters.

V270W1- L03 is a 27” TFT Liquid Crystal Display module with 14-CCFL Backlight unit and 1ch-LVDS interface. This module supports 1280 x 720 WXGA format and can display true 16.7M colors ( 8-bit/color).  The inverter module for backlight is build-in.

The lamp frequency may produce interference with horizontal synchronous frequency from the display, and this may cause line flow on the display. In order to avoid interference, the lamp
frequency should be detached from the horizontal synchronous frequency and its harmonics as far as possible.
Note (4) PL =(Σ lamp1-lamp14 IL ×VL )/0.8, PL is based on the inverter efficiency, which is 80%.
Note (5) The lifetime of a lamp is defined as the time in which it continues to operate under the condition Ta = 25 ±2 oC and IL = (4.35) ~ (4.95) mArms until one of the following events occurs:
(a) When the brightness becomes equal or less than 50% of its original value.
(b) When the effective discharge length becomes equal or less than 80% of its original value.
(Effective discharge length is defined as an area that has equal or more than 70% brightness compared to the brightness at the center point.)
Note: the waveform of the voltage output of inverter must be area-symmetric and the design of the inverter must have specifications for the modularized lamp. The performance of the Backlight, such as lifetime or brightness, is greatly influenced by the characteristics of the DC-AC inverter for the lamp. All the parameters of an inverter should be carefully designed to avoid producing too much current leakage from high voltage output of the inverter. When designing or ordering the inverter please make sure that a poor lighting caused by the mismatch of the Backlight and the inverter (miss-lighting, flicker, etc.) never occurs. If the above situation is confirmed, the module should be operated in the same manners when it is installed in your instrument.

EEPROM

The AT24C01A/02/04/08/16 provides 1024/2048/4096/8192/16384 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 128/256/512/1024/2048 words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low power and low voltage operation are essential. The AT24C01A/02/04/08/16 is available in space saving 8-pin PDIP, 8-pin and 14-pin SOIC packages and is accessed via a 2-wire serial interface. In addition, the entire family is available in 5.0V (4.5V to 5.5V), 2.7V (2.7V to 5.5V), 2.5V (2.5V to 5.5V) and 1.8V (1.8V to 5.5V) versions.

Pin Description

SERIAL CLOCK (SCL): The SCL input is used to positive edge clock data into each E2PROM device and negative edge clock data out of each device.
SERIAL DATA (SDA): The SDA pin is bidirectional for serial data transfer. This pin is open-drain driven and may be wire-ORed with any number of other open-drain or open collector devices.
DEVICE/PAGE ADDRESSES (A2, A1, A0): The A2, A1 and A0 pins are device address inputs that are hard wired for the AT24C01A and the AT24C02. As many as eight 1K/2K devices may be addressed on a single bus system (device addressing is discussed in detail under the Device Addressing section).

The AT24C04 uses the A2 and A1 inputs for hard wire addressing and a total of four 4K devices may be addressed on a single bus system. The A0 pin is a no connect.

The AT24C08 only uses the A2 input for hardwire addressing and a total of two 8K devices may be addressed on a single bus system. The A0 and A1 pins are no connects.
The AT24C16 does not use the device address pins which limit the number of devices on a single bus to one. The A0, A1 and A2 pins are no connects.

V-Chip Password

> Omnipotence V-Chip Password: 8205.
> Press MENU button.
> Press LEFT RIGHT buttons to highlight "MISC" Menu.
> Press Up, Down buttons to highlight "Parentald".
> Press ENTER button to pop up "Input your Password Please".
> Use the Number buttons (0~9) to enter an omnipotence Password.
> Press ENTER button to confirm and your can select "CHANGE PASSWORD".
> Suggest: Change to your familiar Password again.

Akai LCT2662 TFT LCD TV Picture in Picture – SMPS SCHEMATIC

Power:
1). Input voltage: AC 100V~240V, 47Hz~63Hz.  Input range: AC 90V(Min)~264V(Max) auto regulation.
2). To provide power for PCBs.
a). +24V for Inverter.
b). +5Vsb for standby,
c). +5V for signal power,
d). +24V for Audio Amp power and converter to
e). +12V for Tuner power.

1.The supply voltage of the external system for the module input should be the same as the definition of Vcc.
2. Apply the lamp voltage within the LCD operation range. When the backlight turns on before the LCD operation of the LCD turns off before the backlight turns off, the display may momentarily become abnormal screen.
3. In case of VCC = off level, please keep the level of input signals on the low or keep a high impedance.
4. T4 should be measured after the module has been fully discharged between power of and on period.
5. Interface signal shall not be kept at high impedance when the power is on.

COLOR DATA INPUT ASSIGNMENT

The brightness of each primary color (red, green and blue) is based on the 8-bit gray scale data input for the color. The higher the binary input, the brighter the color. The table below provides the assignment of color versus data input.

LVDS interface

TFT LCD MODULE INPUT TERMINAL PIN ASSIGNMENT

Software upgrade
> Connect the RS-232C input jack to an external control device (such as a computer) and software upgrade.

> Power Switch OFF.

> Connect the serial port of the control device to the RS-232 jack on the LCD-TV back panel.
RS-232C connection cables are not supplied with the LCD-TV.
> Power Switch ON. The power indicator on the front of the panel should now display red, means that the LCD-TV is in standby mode.
> Copy the software (MTKTOOL) to the computer.
> Open the software (MTKTOOL.EXE)
> Select MTK 8205 and Point "browse" on the interface of the MTKTOOL.exe.
> Select the file which will be update.
> Point "update" on the interface of the MTKTOOL.exe.
> Waiting for the upgrader programing, when it is finished, the bar will display 100%.
> After the upgrader is finished, shut down the power switch, take out the RS-232C connection after the power indicator is extinguished.
Note: After upgrading, the first time of power on will be some long.

Universal remote control set-up code list

0049 0050 0055 0066 0076 0102 0107 0110 0123 0141 0150 0039 0101 0152 0182 0195 0209 0225 0379 0428 0433 0437 0119 0166 0181 0214 0222 0231 0235 0247 0460 0465 0601 0611 0618 0622 0631 0633 0638 0649 0655 0669 0672 0673 0734 0792 0810 0813

Programming Notes

• If your device does not respond to the remote after trying all codes listed or your brand is not listed in the code list, use the Auto Code Search method to program your remote.
• Sometimes the first code that “works” with your device may operate only a few functions of your device. There may be another code in the code list that performs more functions. Try other codes from the code list for more functionality.

This is a trial and error procedure; and quiet time consuming. You might have to check different codes said for your device.

Electro help - Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

Sony HCD GZR888 DVD DECK RECEIVER – adjustment modes, reset, firmware update, Service mode and more

April 10, 2018, 7:55 am

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HCD-GZR888D - HCDGZR999D is the tuner, deck, DVD and amplifier section in MHCGZR888D/GZR999D 
HCD-GZR888D/GZR999D: E3, E4, E15, EA, PH, SP Model: DVD DECK RECEIVER

HCD-GZR999D: E2, E51, AR, MX Model: DVD RECEIVER

TEST MODE

COLD RESET

 The cold reset clears all data including preset data stored in the RAM to initial conditions. Execute this mode when returning the set to the customer.

Procedure:
1. Press the [Power] button to turn on the system.
2. Press the [Stop] button, [DISC 3] button and [Power] button simultaneously.
3. The message “COLD RESET” appears on the LCD module.
Then, the LCD module becomes blank for a while, and the system is reset.

COMMON TEST MODE
 This mode is used to check operations of the respective section of Equalizer level, volume and VACS ON/OFF.

Procedure to enter Common Test Mode
1. Press the [Power] button to turn on the system.
2. Press the [Stop] button, [PRESET EQ] button and [DISC 1] simultaneously.
3. The message “VACS0” appears on the LCD module.

Check of Equalizer Level

1. Press the [EQ BAND/MEMORY] button repeatedly until a message “ALL EQ MIN” appears on the LCD module. GEQ decreases to its minimum.
2. Press the [EQ BAND/MEMORY] button repeatedly until a message “ALL EQ MAX” appears on the LCD module. GEQ increases to its maximum.
3. Press the [EQ BAND/MEMORY] button repeatedly until a message “ALL EQ FLAT” appears on the LCD module. GEQ is set to flat.

Check of Volume
1. Press the [USB] button repeatedly, the sound volume increases to its maximum and message “VOLUME16”à“VOLUME MAX” appears on the LCD module.
2. Press the [OPTIONS] button repeatedly, the sound volume decreases to its minimum and message “VOLUME16”àt “VOLUME MIN” appears on the LCD module.

Check of VACS (Variable Attenuation Control System)
ON/OFF Select
1. Press the [REC TO USB] button repeatedly until a message “VACS OFF” or “VACS ON” appears on the LCD module.

To release from Common Test Mode
1. To release from this mode, press the [Power] button.
2. To cold reset is enforced at the same time.

AMP TEST MODE
 This mode is used to display the real time VACS level and check operations of the respective sections of Equalizer band and DBFB ON/OFF.

Procedure to enter AMP Test Mode
1. Press the [Power] button to turn on the system.
2. Press the [Stop] button, [GROOVE] button and [DISC 1] button simultaneously.
3. The message “AMP TEST IN” appears on the LCD module.

Check of VACS Display/AMP Adjustment Select
1. Press the [REC TO USB] button repeatedly until a message “V0 0 0” appears on the LCD module. “0” represents VACS level which is triggered by signal level.
2. Press the [REC TO USB] button repeatedly until a message “D +4 0 +2” appears on the LCD module. “+4” represents Equalizer Low level, “0” represents Equalizer Mid level and “+2” represents Equalizer High level.

Check of Equalizer Band Select
1. Press the [EQ BAND/MEMORY] button repeatedly until a message “LOW +4 dB” appears on the LCD module. EQ Band is set to Low level.
2. Press the [EQ BAND/MEMORY] button repeatedly until a message “MID 0 dB” appears on the LCD module. EQ Band is set to Middle level.
3. Press the [EQ BAND/MEMORY] button repeatedly until a message “HIGH +2 dB” appears on the LCD module. EQ Band is set to High level.

Change of Equalizer Band
1. Press the [EQ BAND/MEMORY] button repeatedly until a message “LOW +4 dB” appears on the LCD module.
2. When the [OPERATION DIAL] ring is turned clockwise or counterclockwise even slightly, “LOW +4 dB” change to “LOW –8 dB”<à“LOW +8 dB” appears on the LCD module.

3. Press the [EQ BAND/MEMORY] button repeatedly until a message “MID 0 dB” appears on the LCD module.
4. When the [OPERATION DIAL] ring is turned clockwise or counterclockwise even slightly, “MID 0 dB” change to “MID –8 dB” ç> “MID +8 dB” appears on the LCD module.

5. Press the [EQ BAND/MEMORY] button repeatedly until a message “HIGH +2 dB” appears on the LCD module.
6. When the [OPERATION DIAL] ring is turned clockwise or counterclockwise even slightly, “HIGH +2 dB” change to “HIGH –8 dB” ç> “HIGH +8 dB” appears on the LCD module.

Check of DBFB ON/OFF Select
1. Press the [OPTIONS] button repeatedly until a message “DBFB OFF” or “DBFB ON” appears on the LCD module.
 To release from AMP Test Mode
1. To release from this mode, press the [Power] button.

TCM OFF LINE MODE (Except E2, E51, AR, MX Model)

 This mode prevents the system from tuning off automatically when TCM is not connected. Therefore, measurements can be done even when TCM is not connected during production.

Procedure

1. Press the [Power] button to turn off the system and enter the clock display or demonstration mode.
2. Press the [REC TO TAPE] button, [DISC 3] button and [Power] button simultaneously. The system will turn on automatically.
3. The message “TAPE MECHA OFF LINE” appears on the LCD module.

To release from TCM OFF LINE Mode
1. To release from this mode, press the [Power] button.
PANEL TEST MODE
 This mode is used to check the LCD module, LEDs, button, MASTER VOLUME dial, OPERATION DIAL ring, system software version, DVD lib version, model name and destination.

Procedure
1. Press the [Power] button to turn on the system.
2. Press the [Stop] button, [DISC 3] button and [USB] button simultaneously.
3. Power illuminator LEDs and segment in LCD module are lighted up.

4. When you want to enter to the system software version display model, press the [DISC 1] button. The system software version appears on the LCD module.
Press the [DISC 1] button again, the DVD lib version appears on the LCD module.
5. Press the [DISC 2] button the mode name and destination on the LCD module.
6. Press the [DISC 3] button the key encode test mode is activated.
7. In the key encode test mode, the LCD module displays “KEY 0 0 0 0 0”.
Each time a button pressed, change the each numbers.

To release from Panal Test Mode
1. To release from this mode, press the [stop] button, [DISC 3] button and [USB] button simultaneously.

DVD SHIP MODE (WITHOUT MEMORY CLEAR)
 This mode moves the optical pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair.

Procedure
1. Press the [Power] button to turn on the system.
2. Press the [DVD] button, to set the “NO DISC” mode.
3. Press the [Play] button and [Power] button simultaneously.
The system will turn off automatically.
4. After the “STANDBY” blinking display finishes, a message “LOCK” appears on the LCD module and the DVD ship mode is set.

To release from DVD Ship Mode
1. To release from this mode, press the [Power] button.

DVD SHIP MODE (WITH MEMORY CLEAR)
 This mode moves the optical pick-up to the position durable to vibration and clears all data including preset data stored in the RAM to initial conditions after the power supply is turned off. Use this mode when returning the set to the customer after repair.

Procedure
1. Press the [Power] button to turn on the system.
2. Press the [DVD] button, to set the “NO DISC” mode.
3. Press the [TUNING –] button, [DISC 3] button and [Power] button simultaneously.
4. After the “STANDBY” blinking display finishes, a message “COLD RESET” appears on the LCD module and the DVD ship mode is set.

To release from DVD Ship Mode
1. To release from this mode, press the [Power] button.

DISC THEFT PREVENTION MODE

 This mode let you lock the disc tray. When this mode is activated, the disc tray will not open.

Procedure
1. Press the [Power] button to turn on the system.
2. Press the [DVD] button.
3. Press the [Stop] button and [OPEN/CLOSE Z] button simultaneously and hold down until “LOCKED” or “UNLOCKED” appears on the LCD module (around 5 seconds).
 To release from Disc Theft Prevention Mode
1. This mode will not be deselected only by turning the power off. To exit from the mode, perform the above item 3 again.

DVD COLOR SYSTEM MODE
 This mode let you change the color system of the video output from PAL to NTSC or vice-versa.

Procedure
1. Press the [Power] button to turn on the system.
2. Press the [DVD] button.
3. Press the [Power] button to turn off the system.
4. Press the [DISPLAY] button to switch the mode the clock display or demonstration mode.
5. Press the [Stop] button and [Power] button simultaneously.
The system will turn on automatically.
6. The message “COLOR PAL” or “COLOR NTSC” appears on the LCD module.
 To release from DVD Color System Mode
1. Once the color system has been selected, the mode is fixed there after. If you wish to change the mode again, perform the above item 4 again.

DVD FIRMWARE VERSION MODE
 This mode is used to display the DVD firmware version.
Procedure
1. Press the [Power] button to turn on the system.
2. Press the [DVD] button.
3 Press the [Power] button to turn off the system and enter the clock display or demonstration mode.
4. Press the [Stop] button and [Power] button simultaneously.
5. The version of DVD firmware appears on the on-screen display on TV.

To release from DVD Firmware Version Mode
1. To release from this mode, press the [Power] button.

 MTK REBOOT AVOIDANCE MODE
 This mode is used to display the MTK Reboot Avoidance.
Procedure
1. Press the [Power] button to turn on the system.
2. Press the [DVD] button.
3. Press the [DVD] button, [OPEN/CLOSE] button and [TUNING +] button simultaneously.
4. The message “MTK DBG” appears on the LCD module.

To release from MTK Reboot Avoidance Mode

1. To release from this mode, press the [Power] button.

AM TUNER STEP CHANGE
 The step interval of AM channels can be toggled between 9 kHz and 10 kHz.
Procedure
1. Press the [Power] button to turn on the system.
2. Press the [TUNER/BAND] button repeatedly to select the “AM”.
3. Press the [Power] button to turn off the system.
4. Press the [TUNING +] button and [Power] button simultaneously. The system will turn on automatically.
5. The message “AM 9K STEP” or “AM 10K STEP” appears on the LCD module and thus the channel step change.

VIDEO/SAT FUNCTION CHANGE
 This mode let you change from VIDEO to SAT and vice-versa.
Procedure
1. Press the [Power] button to turn on the system.
2. Press the [VIDEO/SAT] button.
3. Press the [VIDEO/SAT] button and [Stop] button simultaneously.
The function will change to SAT.
4. Press the same button again to change from SAT to VIDEO.

DVD SERVICE MODE
 This mode let you make diagnosis and adjustment easily by using the remote commander and the TV. The instructions, diagnostic results, etc. are given on the on-screen display.

TEST DISC LIST
Be sure to use the DVD disc that matches the signal standards of your region.
 CD
YEDS-18 (Part No.: 3-702-101-01)
PATD-012 (Part No.: 4-225-203-01)
 DVD SL (Single Layer)
NTSC : HLX-503 (Part No.: J-6090-069-A)
HLX-504 (Part No.: J-6090-088-A)
PAL : HLX-506 (Part No.: J-6090-077-A)
 DVD DL (Double Layer)
NTSC : HLX-501 (Part No.: J-6090-071-A)
HLX-505 (Part No.: J-6090-089-A)
PAL : HLX-507 (Part No.: J-6090-078-A)

 Procedure to enter to DVD Service Mode
1. Press the [Power] button to turn on the system.
2. Press the [DVD] button.
3. Press the [Stop] button and [OPEN/CLOSE ] button simultaneously and then turn the MASTER VOLUME dial clockwise.
4. The message “SERVICE IN” appears on the LCD module and the Top Menu of Remocon Diagnosis Menu appears on the onscreen display on the TV. The model name, main unit’s micom version information (IF-con) and DVD firmware version information (Syscon) are displayed at the bottom of the on-screen display.

5. To execute each function, press its number by using numeric button on the remote commander.

6. To release from this mode, press the [Power] button to turn off the system.

Execute IOP Measurement
In order to execute IOP measurement, the following standard procedures must be followed.
1. From the Top Menu of Remocon Diagnosis Menu, select “2.
Drive Manual Operation” by pressing the [2] button on the remote commander. The following screen appears on the onscreen display.

2. Select “3. Manual Adjustment” by pressing the [3] button on the remote commander. The following screen appears on the on-screen display.

3. Select “6. Iop:” by pressing the [6] button on the remote commander.
4. Wait until a hexadecimal number appears in the on-screen display as below:

5. Convert data from hexadecimal to decimal by using conversion table.
6. Please fnd the label on the rear of the BU (Base Unit).
The default IOP value is written in the label.
7. Subtract between these two values.
8. If the remainder is smaller than 93 (decimal), then it is OK. However if the value is higher than 93, then the BU is defective and need to be change.
9. Press the [RETURN] button on the remote commander to return to previous menu.
10. Press the [0] button on the remote commander to return to the Top Menu of Remocon Diagnosis Menu.
11. Press the [Power] button to turn off the system.

Check Emergency History
To check the emergency history, please follow the following procedure.
1. From the Top Menu of Remocon Diagnosis Menu, select “3.
Emergency History” by pressing the [3] button on the remote commander. The following screen appears on the on-screen display.

2. You can check the total time when the laser is turned on during playback of DVD and CD from the above menu. The maximum time, which can be displayed are 999h 59min.
3. You can check the error code of latest 10 emergency history from the above menu. To view the previous or next page of emergency history, press the [|<<] button or [>>|] button on the remote commander. The error code consists of

To clear the Laser Hours
Press the [ DISPLAY] button and then press the [CLEAR] button. The data for both CD and DVD data are reset.

To clear the Emergency History
Press the [DVD TOP MENU] button and then press the [CLEAR] button.
The error code for all emergency history would be reset.

To clear the Initialize Setup Data
Press the [DVD/TUNER MENU] button and then press the [CLEAR] button on the remote commander.

To return to the Top Menu of Remocon Diagnosis Menu
Press the [0] button on the remote commander.
 Check Version Information
To check the version information, please follow the following procedure.
1. From the Top Menu of Remocon Diagnosis Menu, select “4.
Version information” by pressing the [4] button on the remote commander.

To return to the Top Menu of Remocon Diagnosis Menu, press the [0] button on the remote commander.

Electro help - Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

Philips 32PHD5301 – LED LCD TV – How to enter the service mode, adjustments, software update, SMPS circuit diagram

April 12, 2018, 10:20 pm

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Service Modes

The Service Mode feature is split into four parts:

• Service Alignment Mode (SAM).
• Factory Mode.
• Customer Service Mode (CSM).
SAM and the Factory mode offer features, which can be used by the Service engineer to repair/align a TV set. Some features are:
• Make alignments (e.g. White Tone), reset the error buffer
SAM and Factory Mode.
• Display information (“SAM” indication in upper right corner of screen, error buffer, software version, operating hours, options and option codes, sub menus).
The CSM is a Service Mode that can be enabled by the consumer. The CSM displays diagnosis information, which the customer can forward to the dealer or call centre. In CSM mode, “CSM”, is displayed in the top right corner of the screen.
The information provided in CSM and the purpose of CSM is to:
• Increase the home repair hit rate.
• Decrease the number of nuisance calls.
• Solved customers’ problem without home visit.
Note: For the new model range, a new remote control (RC) is used with some renamed buttons. This has an impact on the activation of the Service modes. For instance the old “MENU” button is now called “HOME” (or is indicated by a “house” icon).

Next items are applicable to all Service Modes or are general.
Life Timer
During the life time cycle of the TV set, a timer is kept (called “Op. Hour”). It counts the normal operation hours (not the Stand-by hours). The actual value of the timer is displayed in SAM in a decimal value. Every two soft-resets increase the
hour by + 1. Stand-by hours are not counted.
Software Identification, Version, and Cluster
The software ID, version, and cluster will be shown in the main menu display of SAM and CSM.
The screen will show: “AAAAAAB-XXX.YYY.MMM.TTT”,
where:
• AAAAAA is the chassis name: TPM165L.
• B is the region indication: E = Europe, A = AP/China, U =
NAFTA, L = LATAM.

• XXX is the main version number: this is updated with a major change of specification (incompatible with the previous software version). Numbering will go from 0- 255.
• YYY is the sub version number: this is updated with a minor change of specification (incompatible with the previous versions). Numbering will go from 0- 255.
• MMM is the number of the mandatory (upgrade) release in association with the area of the mandatory (upgrade) release. Numbering will go from 0 - 255.
• TTT bit 7 to 1 is the area of the mandatory (upgrade) release where 0 - none, 1 - Netflix, rest reserved.
• TTT bit 0 : 0 = development release, 1 = production release.

Display Option Code Selection
When after an SSB or display exchange, the display option code is not set properly, it will result in a TV with “no display”.Therefore, it is required to set this display option code after such a repair.
To do so, press the following key sequence on a standard RC transmitter: “062598” directly followed by MENU and “xxx”, where “xxx” is a 3 digit decimal value of the panel type:

 When the value is accepted and stored in NVM, the set will switch to Stand-by, to indicate that the process has been completed.  During this algorithm, the NVM-content must be filtered, because several items in the NVM are TV-related and not SSB related (e.g. Model and Prod. S/N). Therefore, “Model” and “Prod. S/N” data is changed into “See Type Plate”. In case a call centre or consumer reads “See Type Plate” in CSM mode.

Service Alignment Mode (SAM)
Purpose
• To modify the NVM.
• To display/clear the error code buffer.
• To perform alignments.
Specifications
• Operation hours counter (maximum five digits displayed).
• Software version, error codes, and option settings display.
• Error buffer clearing.
• Option settings.
• Software alignments (White Tone).
• NVM Editor.
• Set screen mode to full screen (all content is visible).
How to Activate SAM
To activate SAM, use one of the following methods:
• Press the following key sequence on the remote control transmitter: “062596”, directly followed by the “INFO/OK” button. Do not allow the display to time out between entries while keying the sequence.

After entering SAM, the following items are displayed, with “SAM” in the upper right corner of the screen to indicate that the television is in Service Alignment Mode.

How to Navigate
• In the SAM menu, select menu items with the UP/DOWN keys on the remote control transmitter. The selected item will be indicated. When not all menu items fit on the screen, use the UP/DOWN keys to display the next/previous menu items.
• With the “LEFT/RIGHT” keys, it is possible to:
– (De) activate the selected menu item.
– (De) activate the selected sub menu.
– Change the value of the selected menu item.
• When you press the MENU button once while in top level SAM, the set will switch to the normal user menu (with the SAM mode still active in the background)

How to Store SAM Settings
To store the settings changed in SAM mode (except the RGB Align settings), leave the top level SAM menu by using the POWER button on the remote control transmitter or the television set. The mentioned exceptions must be stored separately via the STORE button.
How to Exit SAM
Use one of the following methods:
• Switch the set to STANDBY by pressing the mains button on the remote control transmitter or the television set.
• Via a standard RC-transmitter, key in “00” sequence.
Note: When the TV is switched “off” by a power interrupt while in SAM, the TV will show up in “normal operation mode” as soon as the power is supplied again. The error buffer will not be cleared.

Contents of the Factory mode:
Purpose
• To perform extended alignments.
Specifications
• Displaying and or changing Panel ID information.
• Displaying and or changing Tuner ID information.
• Error buffer clearing.
• Various software alignment settings.
• Testpattern displaying.
• Public Broadcasting Service password Reset.
• etc.

How to Activate the Factory mode
To activate the Factory mode, use the following method:
• Press the following key sequence on the remote control transmitter: from the “menu/home” press “1999”, directly followed by the “Back/Return” button. Do not allow the display to time out between entries while keying the sequence.
After entering the Factory mode, the following items are displayed.

How to Exit the Factory mode
Use one of the following methods:
• Select EXIT_FACTORY from the menu and press the “OK” button.
Note: When the TV is switched “off” by a power interrupt, or normal switch to “stand-by” while in the factory mode, the TV will show up in “normal operation mode” as soon as the power is supplied again. The error buffer will not be cleared.

Customer Service Mode (CSM)
Purpose
The Customer Service Mode shows error codes and information on the TVs operation settings. The call centre can instruct the customer (by telephone) to enter CSM in order to identify the status of the set. This helps the call centre to diagnose problems and failures in the TV set before making a service call.
The CSM is a read-only mode; therefore, modifications are not possible in this mode.
Specifications
• Ignore “Service unfriendly modes”.

Line number for every line (to make CSM language independent).

Set the screen mode to full screen (all contents on screen is visible).

• After leaving the Customer Service Mode, the original settings are restored.
• Possibility to use “CH+” or “CH-” for channel surfing, or enter the specific channel number on the RC.
How to Activate CSM
To activate CSM, press the following key sequence on a standard remote control transmitter: “123654” (do not allow the display to time out between entries while keying the sequence).
After entering the Customer Service Mode, the following items are displayed.
Note: Activation of the CSM is only possible if there is no (user) menu on the screen.

Contents of CSM
• 1.1 Set Type This information is very helpful for a helpdesk/workshop as reference for further diagnosis. In this way, it is not necessary for the customer to look at the rear of the TV-set. Note that if an NVM is replaced or is initialized after corruption, this set type has to be re-written to NVM.
• 1.2 Production code Displays the production code (the serial number) of the TV. Note that if an NVM is replaced or is initialized after corruption, this production code has to be re-written to NVM.
• 1.3 Installation date Indicates the date of the first installation of the TV. This date is acquired via time extraction.
• 1.4a Option Code 1 Gives the option codes of option group 1 as set in SAM.
• 1.4b Option Code 2 Gives the option codes of option group 2 as set in SAM.
• 1.5 SSB Gives an identification of the SSB as stored in NVM. Note that if an NVM is replaced or is initialized after corruption, this identification number has to be re-written to NVM. This identification number is the 12NC number of the SSB.
• 1.6 Display 12NC NVM read/write.
• 1.7 PSU 12NC NVM read/write.
• 1.8 RF4CE 12NC NVM read/write.
• 2.1 Current Main SW Displays the built-in main software version. In case of field problems related to software, software can be upgraded. As this software is consumer upgradeable, it will also be published on the internet. • 2.2 Standby SW Displays the built-in stand-by processor software version. Upgrading this software will be possible via USB.
• 2.3 Panel Code Displays the Display Code number.
• 2.4 Bootloader ID ID of Bootloader.
• 2.5 NVM-version Detects and displays NVM version.
• 2.6 Flash ID ID of flash model.
• 2.7 e-UM version eDFU (help) version.
• 2.8 Channel Table Structure Version version of channel table structure.
• 2.9 Error Codes Detects and displays errors.

• 3.1 Signal Quality Analog/digital signal strength.
• 3.2 Child lock Not active / active. This is a combined item for locks. If any lock (channel lock, parental lock) is active, it is indicated as “active”.
• 3.3 HDCP keys Indicates the validity of the HDMI keys (or HDCP keys). In case these keys are not valid and the customer wants to make use of the HDMI functionality, the SSB has to be replaced.
• 3.4 Ethernet MAC address A Media Access Control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment.
• 3.5 Wireless MAC address Wireless Media Access Control address.

How to Navigate
By means of the “CURSOR-DOWN/UP” knob (or the scroll wheel) on the RC-transmitter, can be navigated through the menus.
How to Exit CSM
To exit CSM, use one of the following methods.
• Press the MENU/HOME button on the remote control transmitter.
• Press the POWER button on the remote control transmitter.
• Press the POWER button on the television set.

Software Upgrading

It is possible for the user to upgrade the main software via the USB port. This allows replacement of a software image in a stand alone set. A description on how to upgrade the main software can be found in the DFU or on the Philips website.

Preparing a portable memory for software upgrade
The following requirements have to be met:
1. A personal computer connected to the internet.
2. An archive utility that supports the ZIP-format (e.g. WinZip for Windows or Stufflt for Mac OS).
3. A FAT formatted USB memory stick (preferably empty).

Check the current TV software version
Before starting the software upgrade procedure, it is advised to check that what the current TV software:
1. Press the “1 2 3 6 5 4” button on the remote control to enter the CSM mode.
2. Use the up/down cursor keys to select “Current Main Software”.
If the current software version of the TV is the same as the latest update file found on http://www.philips.com/support, it is not necessary to update the TV software.

Download the latest software
1. Open the internet page http://www.philips.com/support.
2. Find information and software related to the TV.
3. Select the latest software update file and download it to the PC.
4. Insert the USB memory stick into one of the USB ports of the PC.
5. Decompress the downloaded ZIP file and copy it to the root directory of the USB flash drive.

Update the TV software
1. Turn the TV on and wait for it to boot completely.
2. Insert the USB memory stick that contains the software update files in one of the TV’s USB ports.
3. The TV will detect the USB memory stick automatically. Then a window jumps out.
Note: If the USB flash drive is not detected after power up, disconnect it and re-insert it.
4. Select [Update] and press OK.
5. To proceed, In next menu select [Start] and press OK to start software updates.

6. Upgrading will now begins and the status of the updating progress will be displayed.
7. When the TV software is updated. Remove your USB flash drive, then select [Restart] and press OK to restart the TV.

Note:
• Do not remove the USB flash drive during the software update.
• If a power failure occurs during the update, do not remove the USB flash drive from the TV. The TV will continue the software update as soon as the power comes up again.
• If an error occurs during the update retry the procedure or contact the dealer.
• We do not recommend downgrading to an older version.
• Once the upgrade is finished, use the PC to remove the TV software from the USB portable memory.

Content and Usage of the One-Zip Software File
Below you find a content explanation of the One-Zip file, and instructions on how and when to use it. Only files that are relevant for Service are mentioned here.• EDID_clustername.zip: Contains the EDID content of the different EDID NVMs.
• FUS_clustername_version.zip: Contains the file downloaded which is needed to upgrade the TV main software and the software download application.
• NVM_clustername_version.zip: Default NVM content.

How to Copy NVM Data to/from USB
When copying data to and from a USB memory stick, the folder “repair” is used. When inserting an empty USB memory stick, and downloading data to the stick, the TV will create this folder.
When sending data from a USB memory stick to a TV, the intended data must be available in the “repair” folder.
Note that when copying EDID data to the TV, all necessary EDID files must be in this folder.

Error Codes

Introduction
Error codes are required to indicate failures in the TV set. In principle a unique error code is available for every:
• Activated (SW) protection.
• Failing I2C device.
• General I2C error.
The last five errors, stored in the NVM, are shown in the Service menu’s. This is called the error buffer.
The error code buffer contains all errors detected since the last time the buffer was erased. The buffer is written from left to right. When an error occurs that is not yet in the error code buffer, it is displayed at the left side and all other errors shift one
position to the right.
An error will be added to the buffer if this error differs from any error in the buffer. The last found error is displayed on the left.
An error with a designated error code never leads to a deadlock situation. It must always be diagnosable (e.g. error buffer via OSD or blinking LED).
In case a failure identified by an error code automatically results in other error codes (cause and effect), only the error code of the MAIN failure is displayed.

How to Read the Error Buffer

You can read the error buffer in three ways:
• On screen via the SAM/CSM (if you have a picture).

Example:
– ERROR: 000 000 000 000 000: No errors detected
– ERROR: 013 000 000 000 000: Error code 13 is the last and only detected error
– ERROR: 034 013 000 000 000: Error code 13 was detected first and error code 34 is the last detected (newest) error
• Via the blinking LED procedure (when you have no picture).

Error codes
In this chassis only “layer 2” error codes are available and point to problems on the SSB. They are triggered by LED blinking when CSM is activated. Only the following layer 2 errors are defined:

How to Clear the Error Buffer
The error code buffer is cleared in the following cases:
• By using the CLEAR command in the SAM menu
• By using the CLEAR command in the Factory mode:
• By using the following key sequence on the remote control transmitter: “062599” directly followed by the OK button.
• If the contents of the error buffer have not changed for 50 hours, the error buffer resets automatically.
Note: If you exit SAM by disconnecting the mains from the television set, the error buffer is not reset.

The Blinking LED Procedure

The software is capable of identifying different kinds of errors. Because it is possible that more than one error can occur over time, an error buffer is available, which is capable of storing the last five errors that occurred. This is useful if the OSD is not
working properly.
Errors can also be displayed by the blinking LED procedure.
The method is to repeatedly let the front LED pulse with as many pulses as the error code number, followed by a period of 1.5 seconds in which the LED is “off”. Then this sequence is repeated.
Example (1): error code 4 will result in four times the sequence LED “on” for 0.25 seconds / LED “off” for 0.25 seconds. After this sequence, the LED will be “off” for 1.5 seconds. Any RC command terminates the sequence. Error code LED blinking is
in red color.
Example (2): the content of the error buffer is “12 9 6 0 0” After entering SAM, the following occurs.
• 1 long blink of 5 seconds to start the sequence.
• 12 short blinks followed by a pause of 1.5 seconds.
• 9 short blinks followed by a pause of 1.5 seconds.
• 6 short blinks followed by a pause of 1.5 seconds.
• 1 long blink of 1.5 seconds to finish the sequence.
• The sequence starts again with 12 short blinks.

SMPS schematic

LED driver

How to Activate Blinking LED Procedure
Use one of the following methods:
• Activate CSM.The blinking front LED will show the layer 1 error(s), this works in “normal operation” mode or automatically when the error/protection is monitored by the standby processor.
In case no picture is shown and there is no LED blinking, read the logging to detect whether “error devices” are mentioned.

Activate SAM. The blinking front LED will show the entire content of the LAYER 2 error buffer, this works in “normal operation” mode.

Fault Finding and Repair Tips
Note:
• It is assumed that the components are mounted correctly with correct values and no bad solder joints.
• Before any fault finding actions, check if the correct options are set.

NVM Editor
In some cases, it can be convenient if one directly can change the NVM contents. This can be done with the “NVM Editor” in SAM mode. With this option, single bytes can be changed.
Caution:
• Do not change these, without understanding the function of each setting, because incorrect NVM settings may seriously hamper the correct functioning of the TV set!
• Always write down the existing NVM settings, before changing the settings. This will enable you to return to the original settings, if the new settings turn out to be incorrect

No Picture via HDMI input
Check if HDCP key is valid. This can be done in CSM

TV Will Not Start-up from Stand-by
Possible Stand-by Controller failure. Re-flash the software.

Audio Amplifier
The Class D-IC U601 has a powerpad for cooling. When the IC is replaced it must be ensured that the powerpad is very well pushed to the PWB while the solder is still liquid. This is needed to insure that the cooling is guaranteed, otherwise the Class
D-IC could break down in short time.

Loudspeakers
Make sure that the volume is set to minimum during disconnecting the speakers in the ON-state of the TV. The audio amplifier can be damaged by disconnecting the speakers during ON-state of the set.

Display option code
Attention: In case the SSB is replaced, always check the Panel Code in CSM, even when picture is available. Performance with the incorrect display option code can lead to unwanted side-effects for certain conditions.

Electro help - Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

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Philips 32PHS5302, 32PHT5302, 43PFS5302 – LCD TV – service mode, software update, power board schematic

April 13, 2018, 1:39 am

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Philips32PHS5302/12, Philips32PHT5302/12, Philips43PFS5302/12, Philips43PFT5302/12, Philips49PFS5302/12

Chassis name: TPM17.2E LA

Platform: MTK5800

32PHx5301
 Energy Efficiency Class : A+
 Visible Screen Size : 80 cm / 32 inch
 On Mode Power Consumption (W) : 47 W
 Annual Energy Consumption (kWh) * : 68 kWh
 Standby Power Consumption (W) **: 0.30 W
 Display Resolution (Pixels) : 1366 x 768p

43PFx5301
 Energy Efficiency Class : A++
 Visible Screen Size : 108 cm / 43 inch
 On Mode Power Consumption (W) : 34 W
 Annual Energy Consumption (kWh) * : 50 kWh
 Standby Power Consumption (W) **: 0.30 W
 Display Resolution (Pixels) : 1920 x 1080p

49PFx5301
 Energy Efficiency Class : A++
 Visible Screen Size : 123 cm / 49 inch
 On Mode Power Consumption (W) : 37 W
Annual Energy Consumption (kWh) * : 54 kWh
 Standby Power Consumption (W) **: 0.30 W
Display Resolution (Pixels) : 1920 x 1080p
* Energy consumption kWh per year, based on the power consumption of the television operating 4 hours per day for 365 days. The actual energy consumption depends on how the television is used.
** When the TV is turned off with the remote control and no function is active.

Service Modes

The Service Mode feature is split into following parts: Service Alignment Mode (SAM).

Factory Mode.
Customer Service Mode (CSM).SAM and the Factory mode offer features, which can be used by the Service engineer to repair/align a TV set.

SAM and the Factory mode offer features, which can be used by the Service engineer to repair/align a TV set. Some features are: Make alignments (e.g. White Tone), reset the error buffer(SAM and Factory Mode). Display information (“SAM” indication in upper right corner of screen, error buffer, software version, operating hours,options and option codes, sub menus).
The CSM is a Service Mode that can be enabled by the consumer. The CSM displays diagnosis information, which the customer can forward to the dealer or call centre. In CSM mode, “CSM”, is displayed in the top right corner of the screen. The information provided in CSM and the purpose of CSM is to: Increase the home repair hit rate. Decrease the number of nuisance calls. Solved customers’ problem without home visit.
Note:For the new model range, a new remote control (RC) is used with some renamed buttons. This has an impact on the activation of the Service modes. For instance the old “MENU” button is now called “HOME” (or is indicated by a “house” icon).

Service Alignment Mode (SAM)

 To modify the NVM. To display/clear the error code buffer. To perform alignments.

Specifications

Operation hours counter (maximum five digits displayed).
Software version, error codes, and option settings display.
Error buffer clearing.
Option settings.
Software alignments (White Tone).
NVM Editor.
Set screen mode to full screen (all content is visible).

How to Activate SAM
To activate SAM, use one of the following methods:

Press the following key sequence on the remote control transmitter: “062596”, directly followed by the “INFO/OK” button. Do not allow the
display to time out between entries while keying the sequence.
Or via ComPair

After entering SAM, the following items are displayed, with “SAM” in the upper right corner of the screen to indicate that the television is in Service Alignment Mode.

How to Navigate In the SAM menu, select menu items with the UP/DOWN keys on the remote control transmitter. The selected item will be indicated. When not all menu items fit on the screen, use the UP/DOWN keys to display the next/previous menu items

 With the “LEFT/RIGHT” keys, it is possible to:
– (De) activate the selected menu item.
– (De) activate the selected sub menu.
– Change the value of the selected menu item. When you press the MENU button once while in top level SAM, the set will switch to the normal user menu (with the SAM mode still active in the background)

How to Store SAM Settings
To store the settings changed in SAM mode (except the RGB Align settings), leave the top level SAM menu by using the POWER button on the remote control transmitter or the television set. The mentioned exceptions must be stored separately via the STORE button.

How to Exit SAM
Use one of the following methods: Switch the set to STANDBY by pressing the mains button on the remote control transmitter or the television set. Via a standard RC-transmitter, key in “00” sequence.
Note:When the TV is switched “off” by a power interrupt while in SAM, the TV will show up in “normal operation mode” as soon as the power is supplied again. The error buffer will not be cleared.

Factory mode:

Displaying and or changing Panel ID information.
Displaying and or changing Tuner ID information.
Error buffer clearing.
Various software alignment settings.
Testpattern displaying.
Public Broadcasting Service password Reset.
etc

How to Activate the Factory mode
To activate the Factory mode, use the following method

Press the following key sequence on the remote control transmitter: from the “menu/home” press “1999”, directly followed by the “Back/Return” button. Do not allow the display to time out between entries while keying the sequence.
After entering the Factory mode, we can see many items displayed, use the UP/DOWN keys to display the next/previous menu items.

How to Exit the Factory mode
Use one of the following methods: Select EXIT_FACTORY from the menu and press the “OK” button.
Note:When the TV is switched “off” by a power interrupt, or normal switch to “stand-by” while in the factory mode, the TV will show up in “normal operation mode” as soon as the power is supplied again. The error buffer will not be cleared.

Software Upgrading, Error code and Panel Code

Software Upgrading

Ready for F/W Upgrade

1. Rename the software as “autorun.upg”
2. Prepare a USB memory.
3. Copy the software to USB flash disk(root directory).
Note the version of this F/W before you change the software file name.

1. Plug the USB memory on the USB port on the side I/O port of TV (Please connect to USB 2.0 port, not recommend USB3.0 port)
2. AC on (Power plug)
3. TV will upgrade automatically as detect the software

4. Press OK to start software upgrade.

5. Upgrade in progress.

Check the SW version

1. After burning software, TV will restart
2. Press “Menu+1999+back”, enter Factory mode to check if the software version is correct
Caution: Please make sure that software upgrade is finished before unplug the USB and AC power.

Error Code

Error codes are required to indicate failures in the TV set. In principle a unique error code is available for every:
 Activated (SW) protection.
 Failing I2C device.
 General I2C error.
The last five errors, stored in the NVM, are shown in the Service menu’s. This is called the error buffer.
The error code buffer contains all errors detected since the last time the buffer was erased. The buffer is written from left to right. When an error occurs that is not yet in the error code buffer, it is displayed at the left side and all other errors shift one position to the right.
An error will be added to the buffer if this error differs from any error in the buffer. The last found error is displayed on the left.
An error with a designated error code never leads to a deadlock situation. It must always be diagnosable (e.g. error buffer via OSD or blinking LED.

How to Read the Error Buffer

 On screen via the SAM/CSM (if you have a picture).
Example:

– ERROR: 000 000 000 000 000: No errors detected
– ERROR: 013 000 000 000 000: Error code 13 is the last and only detected error
– ERROR: 034 013 000 000 000: Error code 13 was detected first and error code 34 is the last detected (newest) error
 Via the blinking LED procedure (when you have no picture)

Error codes overview

In this chassis only “layer 2” error codes are available and point to problems on the SSB. They are triggered by LED blinking when CSM is activated. Only the following layer 2 errors are defined:

How to Clear the Error Buffer

The error code buffer is cleared in the following cases:
 By using the CLEAR command in the SAM menu
 By using the CLEAR command in the Factory mode:
 By using the following key sequence on the remote control transmitter: “062599” directly followed by the OK button.
 If the contents of the error buffer have not changed for 50 hours, the error buffer resets automatically.
Note: If you exit SAM by disconnecting the mains from the television set, the error buffer is not reset.

Panel Code
Press the following key sequence on a standard RC transmitter: “062598” directly followed by MENU and “xxx”, where “xxx” is a 3 digit decimal value of the panel type: see column “Display Code” in below tab. After resetting the Display Code, restart the set immediately.

Power Supply Unit
All power supplies are a black box for Service. When defective, a new board must be ordered and the defective one must be returned, unless the main fuse of the board is broken. Always replace a defective fuse with one with the correct specifications. This part is available in the regular market.
Consult the Philips Service web portal for the order codes of the boards.
Important delta’s with the platform are:
 New power architecture for LED backlight
 “Boost”-signal is now a PWM-signal + continuous variable
The control signals are:
 Stand-by
 Lamp “on/off”
 DIM (PWM) (not for PSDL)
In this manual, no detailed information is available because of design protection issues.

 +5.2V output (standby mode) for 715G7734P
 +12V output (standby mode) for 715G7574P
 +12 output (on-mode)
 +12V_audio (audio AMP power)
 Output to the display; in case of
- IPB: High voltage to the LCD panel
- PSL and PSLS (LED-driver outputs)
- PSDL (high frequent) AC-current

A 715G7734 PSU schematic

Led driver schematic

A 715G7574 PSU(For (For 43”/49” 5302 Series)

Diversity

The diversity in power supply units is mainly determined by the diversity in displays. The following displays can be distinguished:
 CCFL/EEFL backlight: power panel is conventional IPB
 LED backlight:

- side-view LED without scanning: PSL power panel
- side-view LED with scanning: PSLS power panel
- direct-view LED without 2D-dimming: PSL power panel
- direct-view LED with 2D-dimming: PSDL power panel.
PSL stands for Power Supply with integrated LED-drivers.
PSLS stands for a Power Supply with integrated LED-drivers with added Scanning functionality (added microcontroller).
PSDL stands for a Power Supply for Direct-view LED backlight with 2D-dimming.

DC/DC Converters
The on-board DC/DC converters deliver the following voltages(depending on set execution):
 STB_PWR, permanent voltage for the Stand-by Power system and WIFI
 ++3V3SB,voltage for scaler,IR/LED reciver,Key board
 +12V, input from the power supply for the panel common(active mode)
 LBN power, input from the power supply for LNB supply
 LDO_PWR,DVDD3V3, voltage for EMMC when TV on
 VCCK, voltage for DDR when TV on
 AVD3V3,AVDD1V0, supply voltage for scaler MT5593
 +5V_SW, input intermediate supply voltage for USB Power/SPDIF/CI
 +3V3_TUNER, supply voltage for tuner
 DVDD3V3, voltage for IC MT5800/EMMC when TV on
PVDD from the power +12V_AU for the AUDIO AMP
+1.2V_T2, +3.3VA_T2 voltage for Demodulator IC channel decoder.Wi-Fi_VCC,voltage for WIFI
+1.8V, voltage for EMMC when TV on
Wi-Fi_VCC, voltage for WIFI

Video and Audio Processing – MT5800WUEJBGA

The MT5800WUEJ BGA-597 is the main audio and videoprocessor (or System-on-Chip)for this platform. It has the following features:
 Worldwide multi-standard analog TV demodulator
 DVB-T/DVB-C demodulators
 Powerful quad core CPU
 3D graphic support OpenGL ES 2.0
 A muti-standard video decoder
 A transport de-multiplexer
 Rich format audio codec
 H.264 encoder
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 HDMI 1.4a receiver with 3D support
 Local dimming (LED backlight)
 Ethernet MAC+PHY
 MHL 2.0 & Standby Charging
 Panel overdrive control
 Two-link LVDS, mini-LVDS, V-by-one, EPI
The MediaTek MT5800WUEJ family consists of a DTV front-end demodulator, a backend decoder and a TV controller and offers high integration for advanced applications. It integrates a transport de-multiplexer, a high definition video decoder, an audio decoder, a two-link LVDS transmitter, a mini-LVDS transmitter, a V-by-One transmitter, an EPI transmitter, and an NTSC/PAL/SECAM TV decoder with a 3D combfilter (NTSC/PAL). The MT5800WUEJ enables consumer electronics manufacturers to build high quality, low cost and feature-rich DTV.World-Leading Audio/Video Technology.
The MT5800WUEJ supports FullDMPEG1/2/4/H.264/HEVC(H.265)/MVC/DiviX/Xvid/VC1/RM/AVS/AVS+/VP8/VP9 video decoder standards, and JPEG. The MT5800WUEJ also supports MediaTek MDDiTM de-interlace solution which can reach very smooth picture quality for motions.A 3D comb filter added to the TV decoder recovers great details for still pictures. The special color processing technology provides a natural, deep colors and true studio quality video. Moreover, the MT5800WUEJ family has built-in high resolution and high-quality audio codec.Rich Features for High Value Products.The MT5800WUEJ family enables true singlechip experience. It integrates high-quality HDMI1.4a,high speed VGA ADC, two-link LVDS, mini-LVDS , V-by-One, EPI, USB2.0 receiver, Ethernet MAC+PHY, quad core CPU and 512K bytes L2 cache, TCON, panel overdrive, OpenGL ES 1.1/2.0, OpenVG 1.1 compliant 3D graphic engine, and /DVB-T/DVB-C demodulators.WW Common Platform Capability: The MT5800WUEJ family supports DVB-T, DVB-C demodulation functions. It reserves transport stream inputs for external demodulators for other countries or areas. TV maker can easily port the same UI to worldwide TV models. First-class adjacent and co-channel rejection capability grants excellent reception. Professional error concealment provides stable, smooth and mosaic-free video quality.

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Akira CT-25XG9-CHASSIS: 5N11(CT-25XG9A, CT-25XG9AN) How to enter the factory mode, adjustments, full schematic, Option codes

April 16, 2018, 9:07 pm

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Akira 25 inch color TV. Used ICs: STR6656, SE140, AN5891K, TA8256 or TA8246, MSP3410D, MN5198 or MN5199, CD4052, TA8427, 2SC5150(Horizontal Output Transistor), STV5348, 24C04A(Memory)

EEPROM partial initializing

Go to the function set menu (there are two methods: a / b)

a) Press 'VOL+' key and 'VOL-' key on the control board at the same time and switch on power switch, then go to the function set menu.
After TV is on, press "factory" key twin then go to the function set menu.

b) Press 'PM' key and 'SM' key on the control board at the same time until the “INITIAL PART OK” appears, this means the memory having been partially initialized. Operate repeatedly if the picture has no change.

All of the TV set EEPROM must be partially initialized before ex-factory or after change of the Chroma IC NN5198 / NN5199 or fully EEPROM initialized after change of the EEPROM 24C04 (OR 24C08,24C16)

Do a search and store.

CHASSIS ADJUSTMENT

PAL system vertical pincushion adjustment

Receive PAL system cross hatch pattern signal;

Press 'factory' key one time, go to system parameter adjustment menu;

Press 'MENU' key, go to horizontal and vertical parameter adjustment menu;

Select 'V LINE' and 'V SCURVE' by pressing 'PROG+' key and 'PROG-' key;

press 'VOL+' key and 'VOL-' key and adjust corresponding parameter to obtain picture's vertical pin cushion a good status PAL system.

White Balance adjustment:For Factory Auto Computer adjustment

a. Receive white balance test signal;

b. Set picture "MILD" mode.
c. Insert the special plug into CN002, press adjustment key which belongs to white
balance adjustment equipment and go to auto white balance adjustment;
d. After adjustment well, remove the plug.
For Factory Auto Computer adjustment
a. Press 'factory' key one time and go to system parameter adjustment menu;
b. Press "MENU" key once, then go to the White Balance adjustment menu;
c. Press ‘Prog +' key and 'Prog -' key to select the R, G, B cutoff and R, B Driver.
d. Press 'VOL+' key and 'VOL-' key to change. Or using the below direct key
e. Key: 0 for SUB-BRIGHT, 1 for CUTOFF-R, 2 for CUTOFF-G,
3 for CUTOFF-B, 4 for DRIVER-R, 5 for DRIVER-B
f. Recall for toggle the Sub-Bright adjustment (Min. contrast, some CPU version do not work)

Warm up mode

a. Switch on power switch and Press 'factory' key one time; switch off power switch and switch on power switch again, at this time there is no signal white raster and TV won't switch off automatically. TV receiver can be sent to warm up line.
b. Before exit warm up line, press 'factory' key three times continue, at this time exit warm up mode, there is no signal and the LOGO ‘AKIRA’ pattern will appear.
NOTES

Connect the remote IC PIN7 and PIN16 through a jiggle switch on the USER remote handset , this switch is defined as "screen" key; Connect the remote IC PIN8 and PIN16 through a jiggle switch on the USER remote handset , this switch is defined as "factory" key.

On the product line's alignment service we must use special memorizer that has been well written with respective correct version data.

If having no special memorizer that has been well written with data when servicing out of factory, we can use blank new EEPROM. Then the new EEPROM will be automatically totally initialized with default data after main power switch is on. Most parameters are free-alignment after initialized; only need adjust the several parameters of function set parameter and system parameter adjustment menu.

If no blank new EEPROM or no special memorizer that has been well written with data, we can use memorizer that has been written with old data instead, but must be totally reinitialized; the operation is as following

a) After TV is on, press "factory" key twin­then go to the function set menu;
b) Press 'AV/TV' key and 'P.M' key on the control board, the TV turns off automatically; this means the memory having been totally initialized. Operate repeatedly if the picture has no change;
c) Switch off and exit;
d) After initialized, adjust the several parameters of function set parameter and system parameter adjustment menu.

The parameters of function set parameter and system parameter adjustment menu mustn't be adjusted;

Ensure no adjustment on the following parameter except those parameter mentioned here.

System parameter adjustment menu (This is coming from the NN5198/ NN5199)
AFT
VIF VCO
H VCO
VIFDET NEG
VIFDET INT
VIFDET EXT

The ninth digital and the tenth digital of function set parameter
These parameters must be IC interior values. If the above parameters have been changed, we must partially initialize the EEPROM.

Two different initializing
a) Fully initialize: initialize the EEPROM's most work data and preset default value. Including: work parameter of NN5199, horizontal and vertical parameter, OPTION parameter (via. function set parameter), picture mode parameter, volume mode parameter and white balance parameter.
b) Partially initialize: only initialize work parameter of NN5199 and the ninth digital and the tenth digital of function set parameter(via. ISUD0, ISUD1,ISUD3,ISUD4,ISUD5),preset as interior values.

If use 25” or above Pure Flat tube, adjustment of horizontal size and pincushion distortion must be done as follows

a) Receive 60dBuV PAL system monoscope pattern;
b) Press 'factory' key one time and go to system parameter adjustment menu;
c) Press 'MENU' key and select ' Position Menu ' as below

Vertical position – 00 to 07

Horizontal position – 00 to 1F

V EHT(vertical shape) – 00 to 0F

H EHT (horizontal shape) – 00 to 0F

Press 'MENU' key and select ' geometry Menu

Adjust the needy parameters.

Exit system parameter adjustment menu by pressing 'factory' key twin.

Option Codes

Press the 'factory' key twin and go to Option Code Menu

The first digit 8 Digit is set by Factory. The last two digit “9” and “A” is the random data from NN5198/NN5199

Schematic [Click on the pictures to zoom in)

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Color TV schematic Using TDA9570 – Syscon Chroma Jungle IC

April 20, 2018, 6:47 am

≫ Next: How to enter the adjustment mode Philips L05HD NTSC TV – Power supply schematic

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Used ICs: TEA1533AT (SMPS controller), TF6NK90Z (SMPS switching FET), PT11400 (Remote control IC), TDA9570 (Syscon Chroma Jungle), TDA1517 (Audio output IC), LA78040 (Vertical scan output IC), BU1508DX (Horizontal scan output transistor)

This circuit have been used with many brand CTVs.  The main fault found with this circuit is the breakage of the Horizontal scan output transistor (BU15508DX).  If this transistor is found leak (Collector to Emitter), be sure to measure the frequency at pin number (30 – HOUT) of IC TDA9570H.  In most cases this frequency will vary very high than normal.  If you found this frequency to be very high (it can be measured without inserting a new horizontal transistor in place), make sure it to be under limited frequency; usually between (15500 to 17800 Hz), before replacing the horizontal output transistor, otherwise the transistor will get damaged again, as soon as you switch ON the set, not giving any chance to you checkout the fault.

  More to say, if the deflection yoke (Horizontal scan side winding) have an internal short in between its windings, this transistor will overheat in no time, and will fail.  So after replacing this transistor, check the heat of the transistor, periodically at about 2 minute’s interval.  It might get warm, but not too hot.  Feel this heat at its heat-sink.

Click on the schematic to magnify

  Another possibility is with DC output voltage from the SMPS converter.  If this voltage go beyond normal [High], the transistor will get damaged.  If you found this voltage to be abnormal, check and clear all the faults with the SMPS circuit first.

  The components used in the SMPS of this circuit are cheap and easily available at the local electronic spare part market. When work with it, just replace all the main components; (SMPS switching transistor, the opto-coupler and the control IC (TEA1533), all at the same time.

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How to enter the adjustment mode Philips L05HD NTSC TV – Power supply schematic

April 22, 2018, 2:44 am

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Philips L05HD – CRT TV – Power supply section circuit diagram and working principles.

The L05HD TV chassis is designed for the model year 2005.This set is High Definition ready with an NTSC tuning system. To receive the ATSC channels a set top box is required.

Press the Menu button to make a selection. Press the Cursor up-down buttons on the remote to highlight the desired selection. Press the right Cursor button to make the selection.

  The NTSC tuning system features 181 channels with on-screen display. The main tuning system uses a tuner, a microcomputer, and a memory IC mounted on the main panel. The
microcomputer communicates with the memory IC, Remote Receiver, Tuner, Signal processing IC, and HD processing section. The Memory IC retains the settings for favorite stations, customer-preferred settings, and circuit settings. The circuit settings can be accessed by the service technician via the Service Alignment mode.

The On-screen graphics and Closed Caption decoding are done within IC 7206 located on the HD panel. They are added to the main signal in the Display Processor, 7221, located on the HD panel.

Press the Menu button on the remote and press the Cursor up-down button to obtain the screens.

Setting up the access code.

1. Press the Menu button on the remote to display the on-screen menu.
2. Press the Cursor up or down buttons until the word features are highlighted.
3. Press the Cursor right button to display the features menu options.
4. Press the Cursor up or down buttons until the words auto lock is highlighted.
5. Press the Cursor right button. The screen will read, “Access Code ----”
6. Using the number buttons, enter 0, 7, 1, 1. [XXXX will appear as you press the buttons.]
Incorrect code will appear on the screen. Enter 0711 again.
7. The screen will ask you to enter a new code. Enter any 4 digit code.

Main SM Power Supply Block

  The Power supplies are both located on the Family board. The supplies are divided into two sections, the Auxiliary and Main section. A single filter and rectifier circuit supplies both sections. The Auxiliary supply operates in a low power mode when the load is reduced. In the standby mode, the 3.3 and 6 volt supplies are operating. The 3.3 volt supply provides power to the processor section of the Hercules. The 6 volt supply provides power to the IR receiver. The Main supply is switched Off via the Standby line.

  When the set is turned On, the "B" line from the Hercules processor goes High switching 7547 which turns 7535, 7509, and 7545 On. The +3V3A, +6VA, +12VA, and +8VA supplies are then switched On. The load placed on the Aux Power supply will cause it to switch to the full power mode. At the same time, the STBY line switches Low turning the Main SMPS supply On. The supply produces a +6 volt, +140 volt, -16 volt, and +16 volt supplies.
The +Vaudio (+16 volt) supply switches on the degauss relay.

Main SMPS schematic

Auxiliary Power Supply

  IC 7510 is the heart of the Auxiliary Power supply. In the Standby mode, VIA the current sensing and Control circuits, a low power condition is detected by the IC. The IC then goes into a Burst Mode operation to reduce the power used by the circuit. In the Burst Mode, the supply will operate at approximately 25 kHz. In full power operation the frequency will be approximately 66 kHz.

  When power is first applied to the set, Start up is supplied to the IC by the internal Start-Up current through Pin 14. Startup voltage is also applied to the IC to Pin 2 by the AC_IN line which is tied to the neutral side of the AC line. During normal operation, power is supplied to the IC by the HOT windings, Pins 1 and 2, of transformer 5504. Output drive from Pin 11 is applied to the Gate of Transistor 7525. Voltage developed across the current sensing resistors in the Source of 7525 provides current sense information to the IC. When 7525 is switched Off, the voltage on Pin 1 of 5504 goes High. This winding supplies the operating voltage the power supply circuit. It also turns Transistor 7567 On causing the Gate of 7525 to stay Low as long as Pin 1 of 5504 is High. This prevents 7525 from turning On until the field of 5504 has collapsed.

Auxiliary Power Supply Schematic

  Regulation is accomplished by monitoring the +3 volt supply. This voltage is fed to Shunt regulator 7542 which controls the current through opto-isolator 7516. Shunt Regulator 7542 begins conducting when Pin 3 of the IC reaches 2.5 volts. At this point current flows through the opto-isolator, 7516. The transistor inside 7516 turns On applying a control voltage to Pin 6 of 7510. If a problem should develop in the feedback circuit causing an excessive voltage on Pin 6, Transistor 7549-2 will turn On, switching Transistor 7532 On. This will a voltage to the Demag circuit on Pin 7 causing the IC to latch Off. The IC will stay latched until power is removed and reapplied to the set.

  In the Standby mode, the "B" control line from the Hercules Processor is Low. Only the +3, +3V3, and +6 volt supplies are present. When the set is turned On, the "B" line will go High, turning Transistors 7509, 7545, and 7535 On. This will switch On the +8VA, +12VA, +8V, +3V3A, +6VA, and +5V supplies.
  In normal operation, voltage from Pin 12 of 5504 is rectified by 6540 to produce a negative voltage which prevents Transistor 7561 from turning On. If AC is removed from the set, this negative voltage will disappear. The voltage across the filter capacitors on the +3V line will turn 7561 On. The Power Down line will then go Low signaling the processor to shut the set down.

  The Main Power supply provides the VBAT (141 volt), and Audio voltage supplies. This supply is switched Off during the Standby mode. During Standby the STBY_Con line is High which turns Transistor 7573 On. This causes the opto-isolator 7513 to turn On hard. This places a higher voltage on the control Pin of IC 7511 causing the IC to shut down. The operating voltage from the Auxiliary supply keeps a small voltage on Pin 2 of 7511 to prevent it from cycling On and Off. Output from Pin 11 of 7511 drives FET 7512 which drives Transformer 5512. When Pin 2 of 5512 goes High, Transistor 7514 is switched On turning 7512 Off. This is to prevent 5512 from becoming saturated.

  When the set is turned On, the STBY_Con line goes Low switching 7573 Off. The VBAT supply is the reference voltage for regulation. Since this voltage is missing during startup, the Shunt Regulator 7571 is turned Off. The voltage on Pin 6 of 7511 goes Low, which turns the drive from the IC On. When the set is On during normal operation, the supply voltage on Pin 2 of the IC is supplied by Pin 2 of Transformer 5512. When the VBAT supply reaches the correct voltage, Pin 3 of the Shunt Regulator 7571 reaches 2.5 volts switching it On. This switches the opto-isolator On to provide a regulation feedback path.

  Transistor 6551 provides a power on ramping of the VBAT supply.

Service Alignment Mode SAM
Making changes in the settings requires entering the SAM. To enter SAM, press [06 2 5 9 6

Info] on the remote control. Use the cursor-up and cursor-down buttons to highlight a selection. Press the cursor-right, cursor-left buttons, or enter a value to make changes. 

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Working principle and general troubleshooting – Philips L05HD NTSC CRT TV

April 22, 2018, 4:36 am

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When troubleshooting the set, the defective panel requiring replacement or additional repair must be located. The Power supplies, Deflection, 1fH inputs, and Audio outputs are located on the Family board. The 2fH, CRT drive, and Deflection drive circuits are located on the Trident board.
If the set turns ON without a picture or sound, first check the power supplies located on the Family board. If the set comes ON, then shuts Off, there may be a problem with the shutdown circuits which are located on the Family board. If the picture is missing, but sound and high voltage are present, the problem may be located on the Trident panel.

TV Signal Processor

Red, Green, and Blue from the Trident IC is input on Pins 30, 31, and 32 of 7221, TV Display Processor. The RGB/YUV matrix changes the signal to a YUV signal before feeding it to a Color level control circuit. The signal is fed to the RGB insertion circuits where the OSD is inserted. The signal is then fed to a White Point and Brightness Control circuit and then to the CRT panel. The White Point and Output Amplifier have the Drive controls and Cutoff controls. Input from the ABL line on Pin 43 makes adjustments in the brightness levels to adjust for changes in beam current. The Cutoff pulses from the CRTs are fed to Pin 44 to the Cathode Calibration circuit. The Cathode Calibration circuit adjusts the cutoff levels of the CRT to maintain the correct gray scale tracking. 

When the set is first turned On, a calibration pulse is output on the RGB lines. The Cathode Calibration circuit monitors this pulse on the Cutoff line to set the Black level and the maximum drive voltage for the cathode. Once the Calibration has taken place, the Output Amplifier switches to the RGB drive signal as the output. Horizontal and Vertical Sync is fed to 7600 on Pins 23 and 24. IC 7600 processes the sync to provide the geometry for the picture. Horizontal drive is output to the sweep circuit on Pin 8. Vertical drive is output on Pins 1and 2. East West drive is output on Pin 3. Sandcastle (SCO) is output on Pin 9. Horizontal Feedback (HFB) from the sweep circuit is fed into the Phase Loop to phase correct the Horizontal drive. IC 7221 is controlled by the Hercules Processor on the Family Board via the I2C buss on Pins 10 and 11. Transistors 7226 and 7227 levels shifts the I2C buss level between 5 and 3.3 volts. Geometry and Drive settings are stored in the Memory IC located on the Family Board.

Deflection: Sync

Whatever signal is applied to the L05 chassis, it will display the picture in a 1080i format. This means that the Line or Horizontal frequency is always 33.75 kHz. The Vertical or Frame rate is 60 Hz.
Vertical Sync is output from the Trident IC 7201 on Pin 35. The signal is buffered by Transistor 7203 before being fed to the TV display processor and TV Microcontroller. In the same manner Horizontal Sync is output on Pin 34 and is buffered by Transistor 7204.

Synchronization section circuit

Deflection

Horizontal drive from 7221 is fed to Transistor 7404 located on the Family board. This drive circuit has two power sources. During startup, it is powered by the +6 volt supply. Once the High Voltage circuit is running, it is powered by Pin 9 of the IFT. 7404 drives Transformer 5402 which drives the HOT (Horizontal Output Transistor). The HOT drives the IFT and the Horizontal Deflection Coil. The IFT is powered by the VBAT (141 volt) supply.
The IFT produces High voltage, Focus voltage and G2 voltage to drive the CRT. In addition, a 200 volt supply is produced to drive the CRT panel, a +14 and -14 volt supply for the Vertical output, Filament voltage, +200 volt VideoSupply, and a +12V_lot supply.
Transistor 7408 monitors the IFT secondary to sense the presence of over voltage. If the High Voltage goes High, the voltage on Pin 6 of the IFT will go High. When the voltage on diode 6480 exceeds 15 volts, transistor 7408 will turn On. If 7408 turns On, it will turn 7407 On causing the x_ray protect line to go Low. The Processor will then shut the set down. In addition the EW_DRIVE circuit is monitored. If the EW_DRIVE fails, transistor 7406 will turn On constantly placing a dc voltage on the source. This will turn 7407 On. IC 7451 is the Vertical Output IC. It is powered by the +14 and -14 volt supply from the IFT.
The Vertical pulse is rectified by 6458, keeping the V_PROTN line High. If the vertical output should fail, the V_PROTN line will go Low. The Hercules processor will then shut the set down.

Line-Frame deflection

Set Control

The L05HD has two microprocessors, The Hercules located on the Family board and the TV Controller located on the Trident board.

The Hercules, 7200, provides control for the entire set. During standby, the Hercules and the Remote sensor are powered by the 3.3 volt supply. The customer communicates with the Hercules via the Remote sensor and Power switch located on the Front Control panel. The power supplies are switched On via the STBY-CONT and B lines. The TV Controller is reset by the C control line. The I2C bus communicates with the EEPROM 7601, Tuner 1000, TV Controller 7206, Trident 7201, A/D 7210, TV Display Processor, 7221, and HDMI panel.

Hercules Processor

Signal flow

The output of the Tuner is fed to the SAW filter, 1002, and then to 7200, Hercules, on Pins 104 and 105. The SVHS (YC) signals are combined inside 7200. IC 7200 selects between AV1, AV2, Side, and Tuner composite video. The selected composite video is output on Pin 65. Video buffered by Transistor 7211 is fed to IC 7206 located on the Trident panel which extracts Closed Caption text and Teletext information. This IC also generates the OSD (On Screen Display). Video buffered by 7212 is fed to the Trident IC which has an internal 3-D Comb Filter and A/D converter. IC 7201 rescales the picture to 1080i.
Component video is inserted into the YPbPr input located on the Family board. The HDMI panel converts the HDMI signal into an analog YPbPr format. Both of these signals are fed to the Switch, 7205 which selects between the two. The selected signal is fed to IC 7210 which performs an A/D conversion. This 24 bit signal is fed to 7201. The Scaler (Trident IC) converts the signal to a 1080i format as well as performing picture enhancement functions.
DRAM ICs 7215, 7216, 7217, and 7218 stores picture data for the Scaler as it is being processed. And internal D/A conversion circuit outputs the 1080i signal is an RGB format on Pins 27, 28 and 29. Horizontal and Vertical sync is output on Pins 34 and 35.

The RGB signal from the Scaler is fed to the TV Display Processor, 7221. RGB is output from this IC to the CRT panel. Horizontal and Vertical drive is output to the Family board.
TV Display Processor
IC 7221 is used in a large number of Philips chassis for a long period of time. RGB in inserted in Pins 30, 31, and 32. This signals are converted to a YUV format before being fed to the Color level control. RGB from 7206 is inserted on Pins 35, 36, 37, and 38. The signal then goes to a Brightness and Controls control circuit. RGB to the CRT panel is output on Pins 40, 41, and 42. During warm up, a cathode calibration signal is fed to the CRT panel on the RGB lines. This signal is then fed back to CRT panel.

RGB is fed to the CRT panel on connector 1331. The CRT panel for the L05HD has a single chip CRT drive circuit. RGB is fed to 7330 on Pins 1, 2, and 3. Signal is output to the CRT on Pins 7, 8, and 9. BC_INFO or Cutoff on Pin 5 is fed back to the TV Signal Processor on the Trident panel. The IC is powered by a 200 volt supply on Pin 6.
DC operating voltages for the CRT panel are located on connector 1351. The Filament voltage is located on Pin 2. The 200VA voltage on Pin 5 powers 7330. The VBAT voltage on Pin 3 and the +12V_LOT voltage on Pin 6 powers the SVM circuit.

SVM

There are two coils on the deflection coil in addition to the Vertical and Horizontal winding.  The SCAVEM coil (Scan Velocity Modulation) sharpens the edges between light and dark transitions.
The SVM_ROT signal drives both the SCAVEM and the Rotation coil. The SCAVEM circuit is powered by the Vbatt and +12V_LOT supplies. Capacitor 2376 blocks the dc Rotation signal to prevent it from entering the SCAVEM circuit. Capacitor 2381 blocks the higher frequency SCAVEM signal to prevent it from affecting the Rotation drive.

SVM coil and rotation circuit

Audio

All audio processing and control is performed by the Hercules IC 7200 located on the main board.
Audio is included in the HDMI bit-stream. Digital audio from 7002 is fed to IC 7011, Audio DAC. Audio from 7011 is fed to IC 7050, switch, which has only one input since the second input is not used in the HD version. The output of 7050 is fed to the Hercules IC located on the Main board. Audio for the CVI input should be inserted into AV1. Audio is output from the Hercules on Pins 68 and 69 to the Audio Amplifier, IC 7990. This is a two channel 20 watt amplifier.

Audio output
Main audio is output on Pins 68 and 69 and fed to the audio amplifier 7990. The audio amplifier is a dual 10 watt amplifier. It is powered by the +VAUDIO and -VAUDIO supplies. These are +16 and -16 volts. To mute the amplifier, the VOL_MUTE line goes Low switching transistor 7992 Off switching transistor 7991 On. The output of the amplifier is fed to the Side Jack panel.
Monitor audio is output on Pins 66 and 67 of 7200. These outputs are muted by the STBY_CONT and POWER DOWN lines. The POWER DOWN line is High during normal operation. As the set powers off, this line goes Low, switching 7993 Off. Transistor 7104 then switches On to mute the output. The STBY_CONT line goes High when the set is turned Off turning 7994 On, muting the output. Capacitor 2999 delays the turn-on of 7993 to prevent a pop in the speaker at set turn ON.

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