How to repair the parking sensor module.  Printed circuit board has the following RoHS code PR-B62-04 192507

Installed this parking sensor on  Hilux (with metal bumper) by dealer; about 6 months ago;  and now the LCD display had the following errors when driving in reverse.

"E3" and "E4". 

These two sensors 3 and 4 stopped working.

Original Module

Problematic signal transformers

Opened the module and did some tests and found that the signal transformers (variable inductors with two windings) sensors 3 and 4 were in problem; open winding at (pins 4-6).   See the picture below. Searched the internet for this signal transformer marked "UP 04" and found nothing.

There is no information or any other details about this device  fount by internet.  

Inductor Pinout

 Decided to look for a similar module. The module has a label “P/N: PR-2332".  Searched the internet and found some original modules from other GM vehicles with the same "P/N: 2332" and with the same pin configuration. Purchased one of these used GM modules and de-soldered out the two signal transformers, and replaced them at the original module.  

The purchased module cannot be used here because of the firmware is different.

GM module

The purchased GM module,  the LCD display shows nothing and only beeping according to the distance from the obstacle. 

So, leave this tip here for anyone who has problems with this type vehicle's parking module.

APPLICABLE TO:

55PUT7374-98 70PUT7374-67

55PUT7374-56 70PUT7374-79

55PUT7374-67 70PUT7374-75

55PUT7374-79 70PUH7374-96

55PUT7374-75 55OLED804-98

55PUH7374-96 55OLED804-56

55PUT7374-68 55OLED804-67

65PUT7374-98 55OLED804-75

65PUT7374-56 55OLED804-79

65PUT7374-67 55OLED804-71

65PUT7374-79 65OLED804-98

65PUT7374-75 65OLED804-56

65PUH7374-96 65OLED804-67

65PUT7374-68 65OLED804-75

70PUT7374-98 65OLED804-79

70PUT7374-56 65OLED804-71

75PUT7354-56

Chassis: TPM19.1A LA

Platform: MTK5599

Always respect voltages. While some may not be dangerous in themselves, they can cause unexpected reactions that are best avoided. Before reaching into a powered TV set, it is best to test the high voltage insulation. It is easy to do, and is a good service precaution.

Sound

Output power (RMS): 20W

Dolby Atmos

Dolby MS12D V2.2

Dolby AC – 4

DTS – HD (M6)

Diagonal screen size

• 126 cm - 50 inch

• 139 cm - 55 inch

• 164 cm - 65 inch

• 178 cm - 70 inch

• 189 cm - 75 inch

• LNB : DiSEqC 1.0, 1 to 4 LNBs supported, Polarity selection 14/18V, Band selection 22kHz, Tone burst mode, LNB current 300mA max.

Playback formats

• Containers: PS, TS, M2TS, TTS, AVCHD, MP4, M4V, MKV, ASF, AVI, 3GP, Quicktime

• Video Codecs : AVI, MKV, HEVC, H.264-MPEG-4 AVC, MPEG1, MPEG2, MPEG4, WMV9-VC1, VP9, HEVC (H.265)

• Audio Codecs : MP3, WAV, AAC, WMA (v2 up to v9.2), WMA-PRO (v9 and v10)

Supported media server software (DMS)

• You can use any DLNA V1.5 certified media server software (DMS class).

• You can use the Philips TV Remote app (iOS and Android) on mobile devices.

Performance may vary, depending on the capabilities of the mobile device and the software used.

BOM identification

It should be noted that on the European Service website, “Alternative BOM” is referred to as “Design variant”.

The third digit in the serial number (example:

AG2B0335000001) indicates the number of the alternative B.O.M. (Bill Of Materials) that has been used for producing the specific TV set. In general, it is possible that the same TV model on the market is produced with e.g. two different types of displays, coming from two different suppliers. This will then result in sets which have the same CTN (Commercial Type Number; e.g. 28PW9515/12) but which have a different B.O.M. number.

By looking at the third digit of the serial number, one can identify which B.O.M. is used for the TV set he is working with. If the third digit of the serial number contains the number “1” (example: AG1B033500001), then the TV set has been manufactured according to B.O.M. number 1. If the third digit is a “2” (example: AG2B0335000001), then the set has been produced according to B.O.M. no. 2. This is important for ordering the correct spare parts.

For the third digit, the numbers 1...9 and the characters A...Z can be used, so in total: 9 plus 26= 35 different B.O.M.s can be indicated by the third digit of the serial number.

Identification: The bottom line of a type plate gives a 14-digit serial number. Digits 1 and 2 refer to the production centre (e.g. SN is Lysomice, RJ is Kobierzyce), digit 3 refers to the B.O.M. code, digit 4 refers to the Service version change code, digits 5 and 6 refer to the production year, and digits 7 and 8 refer to production week (in example below it is 2010 week 10 / 2010 week 17). The 6 last digits contain the serial number.

Board Level Repair (BLR) or Component Level Repair (CLR)

If a board is defective, consult your repair procedure to decide if the board has to be exchanged or if it should be repaired on component level.

If your repair procedure says the board should be exchanged completely, do not solder on the defective board.  Otherwise, it cannot be returned to the O.E.M. supplier for back charging.

Cable dressing

Disassembly of Power Supply Unit (PSU)

Caution: it is mandatory to remount all different screws at their original position during re-assembly. Failure to do so may result in damaging the PSU.

1. Gently unplug all connectors from the PSU.

2. Remove all fixation screws from the PSU.

3. The PSU can be taken out of the set now.

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.

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

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_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)

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 or Left keys

to display the next or 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 or 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. Or Press the POWER button on the remote control transmitter. Or Press the POWER button on the television set.

Software Upgrading, Error code and Panel Code

The following update is for .pkg file.

1. Rename the file to “upgrade_loader.pkg”.

2. Prepare a USB memory (File format: FLAT, Size: 1G~8G).

3. Copy the software to USB flash disk (root directory).

4. Switch off the TV and Insert the USB memory stick that contains the software update files in one of the TV’s USB 2.0 port.

Note: It contains USB3.0 port, if connect on it, the software may can’t be detected.

5. Switch on the TV. The TV will detect the USB memory s tick automatically. Then a window jumps out as below:

6. When the TV software is updated, the TV will turn on again automatically. Remove your USB flash drive.

7. We can enter in CSM or Factory mode to check the current software version.

The following update is for .upg file.

Ready for Firmware Upgrade:

1. Rename the file to “autorun.upg”.

2. Prepare a USB memory (File format: FLAT, Size: 1G~8G).

3. Copy the software to USB flash disk (root directory).

4. Switch on the TV and Insert the USB memory stick that contains the software update files in one of the TV’s USB 2.0 port.

Note the version of this firmware before you change the software file name.

Firmware Upgrade

Press [Settings], then Choose [Search for update] in the Settings menu.

2. Choose [USB], and then press OK.

3. Choose [Identify], and then press OK.

4. .Select the file that you downloaded and press OK.

5. Identify the software and choose [Done], then choose [Start] on following step.

6.Choos [Update] press OK start the software update.

6. Upgrade in progress.

Check the SW version

After burning software, TV will restart

2. Press “123654”, enter Customer Service Mode to check if the software version is correct.

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

You can read the error buffer in following 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 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.

Set Option Code

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

Power layout SSB

Power SSB Top View (For 715GA046M)

SMPS [POWER] A 715GA018 PSU(For 55”/65” 7374 Series)

SMPS [POWER] A 715GA025 PSU (For 70” 7374 & 75” 7354 Series)

SMPS [POWER] A 715G9892 PSU (For 55”/65” OLED Series)

It makes sense to avoid exposure to electrical shock.  While some sources are expected to have a possible dangerous impact, others of quite high potential are of limited current and are sometimes held in less regard.

Always respect voltages. While some may not be dangerous in themselves, they can cause unexpected reactions that are best avoided.

BOM identification

It should be noted that on the European Service website, “Alternative BOM” is referred to as “Design variant”.

The third digit in the serial number (example: KX2B0835000001) indicates the number of the alternative B.O.M. (Bill Of Materials) that has been used for producing the specific AV set. In general, it is possible that the same AV model on the market is produced with e.g. two different types of display, coming from two different suppliers. This will then result in sets which have the same CTN (Commercial Type Number; e.g. MCM394/12) but which have a different B.O.M. number.

Also, it is possible that same model on the market is produced with two production centers, however their parts list is the same.  In such case, no alternative B.O.M. will be created.

By looking at the third digit of the serial number, one can identify which B.O.M. is used for the set he is working with.  If the third digit of the serial number contains the number “1” (example: KX1B033500001), then the set has been manufactured according to B.O.M. number 1. If the third digit is a “2” (example: KX2B0335000001), then the set has been produced according to B.O.M. no. 2. This is important for ordering the correct spare parts.  For the third digit, the numbers 1...9 and the characters A...Z can be used, so in total: 9 plus 26= 35 different B.O.M.s can be indicated by the third digit of the serial number.

Identification:

The bottom line of a type plate gives a 14-digit serial number. Digits 1 and 2 refer to the production centre (e.g. LM is Arts), digit 3 refers to the B.O.M. code, digit 4 refers to the Service version change code, digits 5 and 6 refer to the production year, and digits 7 and 8 refer to production week (in Example below it is 2008 week 50). The 6 last digits contain the serial number.

Module Level Repair (MLR) or Component Level Repair (CLR)

If a board is defective, consult your repair procedure to decide if the board has to be exchanged or if it should be repaired on component level.  If your repair procedure says the board should be exchanged completely, do not solder on the defective board. Otherwise, it cannot be returned to the O.E.M. supplier for back charging.

PCB locations

Disassembly procedure

Software check and upgrade

Copy the file “MCU.BIN” into a USB stick.

2. Power ON the device, and plug the USB stick into USB socket.  After the device read the content in the USB, the LCD will show a upgrade menu, and enter into the upgrading status.

3. The LCD will appear a number (changed from 20 to 0), and when arrived the number 0, then appear a processing bar, which mean the device enters upgrading status.

4. in step 3, if want to enter into the upgrading status quickly, press the key OK to confirm, the processing bar will appear immediately.

6. When software upgrade is complete, the device will power off automatically.

Check servo software version

Copy the file “ROM.BIN” into USB stick (note to delete the file “MCU.BIN”)

2. Power ON the device, and plug the USB stick into USB socket.  After the device read the content in the USB, the LCD will show a upgrade menu, and enter into the upgrading status.

3. The LCD will appear a number (changed from 20 to 0), and when arrived the number 0, then appear a processing bar, which means the device enters upgrading status.

4, press the key OK to confirm, the processing bar will appear immediately.

5. Disconnect the USB stick.

6. When software upgrade complete, the device will change to disc mode automatically.

When the device is power ON at the first time, in USB or SD or Disc mode, press the key in turn:

Stop > Up > Down > Left > Right

The LCD will display the service software, MCU, TFT version number.

Malfunction chart

Wiring diagram

Circuit diagram

KDF-46E2010 RM-YD010 MEXICO

KDF-50E2000 RM-YD010 US-CND

KDF-50E2010 RM-YD010 MEXICO

KDF-55E2000 RM-YD010 US-CND

KDF-55E2010 RM-YD010 MEXICO

American TV standard, NTSC

ATSC Compliant 8VSB, ATSC (8VSB terrestrial)

ANSI/SCTE 07 2000, QAM on cable

Lamp: 100W, XL-2400 Ultra High Pressure Lamp

Projection System:  3 LCD Panels, 1 lens projection system

Screen Size (measured diagonally): 

46 inches (KDF-46E2000/46E2010 Only)

50 inches (KDF-50E2000/50E2010 Only)

55 inches (KDF-55E2000/55E2010 Only)

The units in this manual contain a self-diagnostic function. If an error occurs, the POWER/STANDBY will automatically begin to flash. The number of times the LED flashes translates to a probable source of the problem. A definition of the POWER/STANDBY fl ash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error symptom is difficult to reproduce use the Remote Commander to display the record that is stored at the internal NVM to specify the cause of the failure.

Diagnostic Test Indicators

When an error occurs, the POWER/STANDBY will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the POWER/STANDBY will identify the fi rst of the problem areas. If the errors occur simultaneously, the one that corresponds to the fewest flashes is identified first.  Results for all of the following diagnostic items are displayed on screen. (No error has occurred if the screen displays a “0”.)

RELEASING THE POWER/STANDBY LED FLASH

Unplug the power cord from the outlet to temporarily stop the POWER/STANDBY lamp from flashing.

Self-Diagnostic Screen Display

For failures that are difficult to reproduce, or accompany occasional power off and/or picture mute, the Self-Diagnostic screen display is useful to specify the cause.

VIEWING THE SELF-DIAGNOSTIC SCREEN

1. TV must be in standby mode. (Power off).

2. Press the following buttons on the Remote Commander within a second of each other:

DISPLAY > Channel 5 > Volume (-) > POWER

NOTE: This differs from the method of accessing service mode which is Volume +

To refresh the Self Check menu when all the items are not displayed, press JUMP on the Remote Commander.

3. Proceed to Viewing the Self-Diagnostic Errors.

VIEWING THE SELF-DIAGNOSTIC ERRORS

The TV MICRO service menu contains a Log category that stores the errors. To view the fi rst error detected, display the SHUTDOWN - LOG1 Adjustment Item of the STATUS category. If other errors are detected, they are stored in the SHUTDOWN - LOG2 Adjustment Item of the STATUS category.

1. TV must be in standby mode. (Power off).

2. Press the following buttons on the Remote Commander within a second of each other:

DISPLAY > Channel 5 > Volume (+) > POWER.

3. Do one of the following:

a. If the TV MICRO Service Menu is displayed, proceed to the next step.

b. If the TV Micro Service Menu is not displayed, press JUMP on the Remote Commander until the TV MICRO service menu is displayed.

4. Do one of the following:

a. If the STATUS Category is displayed, proceed to the next step.

b. If the STATUS Category is not displayed, press 2 or 5 on the Remote Commander until the STATUS Category is displayed.

5. The SHUTDOWN_LOG1 Adjustment Item is the first item of the STATUS Category and contains the first error the set detected.

6. To view additional errors, press 1 until the SHUTDOWN_LOG2 Adjustment Item is displayed

7. After repairing the errors, precede to clearing the Self-Diagnostic Screen.

CLEARING THE SELF-DIAGNOSTIC SCREEN

The self-diagnostic results displayed on the screen are not cleared automatically; therefore you should always check the self-diagnostic screen during repairs.  When you have completed the repairs, clear the self-diagnostic screen to reset the results to “0”.

(The self-diagnostic function will not be able to detect any subsequent faults after completion of the repairs unless the Self-Diagnostic result display is cleared to reset the results to “0”.)

1. If the Self-Diagnostic screen is already displayed, proceed to step 3. If not, Power off (Set to Standby mode).

2. Press DISPLAY > Channel 5 > Sound Volume (-) > POWER

3. Press Channel 8 > ENT

The status in the upper right corner changes to “WRITE”. When the operation is complete, the status returns to “SERVICE” and the Self-Diagnostic screen is reset.

4. To exit the Self-Diagnostic screen, turn the power off.

SELF-DIAGNOSTIC FUNCTION OPERATION

2 : temp

When temperature sensor on the S2 board detects high temperature, or I2C line connector (CN6804: G board, CN160: S2 board) is not seated securely, the TV-micro turns off the lamp.  When the temperature sensor on the HB board detects high temperature, or I@C line connector (CN3008: B board, CN110: HB board) is not seated securely, the TV-micro turns off the lamp.

3: Lamp cover or Lamp position.

The rib at the back of the lamp cover closes the SW on the T1 board.  The lamp closes the SW on the T2 board.  It is monitored by the TV micro (Pin150 of IC3002) and turns off the lamp when it is opened.

4: Fan error

Fan rotation is detected by “FAN-PROT” and the TV micro (Pin 137 of IC3002) turns off the lamp when it is “high”

5: Lamp driver

When the “LAMP-PROT” (Pin 151 IC3002) is high, the lamp is not turned on.  If the “LAMP-HV-DET” (Pin 152 IC3002) is low at the same time, it is classified as no high voltage of the lamp driver.

6: Low B LVP

When no B-10.5V is detected, pin 129 of the TV micro is low and it turns off the main power.

8: Low B OVP

When overvoltage of B-10.5V is detected, pin 126 of the TV micro is low and it turns off the main power.

LAMP: Lamp

When the “LAMP-PROT” (Pin 151 of IC3002) (normally at 0V) is high (5V), the self-diagnosis detects the problem and puts the set into Lamp protect mode and turns the lamp off.

If the “LAMP-HV-DET” (Pin 152 of IC3002) is high, at the same time, it’s classified as no lamp of burned out lamp.

G Board (Power supply board: schematic)

Component side and conductor side (Power Board)

How to remove the G-Board

1 Remove 2 screws to release the Left Stay

2 Disconnect CN8400 from U Board

3 Disconnect CN2500 from K Board

4 Release wires from purse locks

5 Gently pull chassis out towards the right of the TV to access connectors on B Block Assembly.

6 Disconnect CN308 and CN3750 on B Block Assembly

7 Release connectors from Wire Holders

8 Remove 4 screws to release the G Board

9 Remove 6 screws to detach Metal Shield from G Board.

Using the picture above as a reference, disconnect CN6018, CN6801, CN6804, CN6803, CN6800, CN6805, CN6900, CN6901, CN6009, CN6002, CN6904, and CN6010.

How to remove lamp assembly

Remove the Lamp door and Lamp before removing the Lamp Block Assembly

1 Remove 2 screws to release the Right Stay.

2 Disconnect CN150 T1 Board

3 Disconnect CN155 T2 Board

4 Disconnect the Thermal Fuse connector.

5 Disconnect CN160 S2 Board

6 Remove 2 screws then pull out the fan cover.

7 Turn the fan cover over to remove the T1 Board and S2 Board.

8 Using caution remove the LVDS cable and 2 screws.

9 Remove 2 screws to release the Lamp Block Assembly and the Optical Block assembly from the cabinet.

0 Gently pull the Lamp Block Assembly and the Optical Block Assembly out of the cabinet.

11 Turn the assemblies around 180 degrees and release the high voltage lead from the purse lock.

Models: LE32S71B, LE37S71B, LE37S61B, LE40S71B, LE40S61B,   Chassis: GSM27SE, GSM32SE, GSM37SE, GSM37HEU, GSM40SE And GSM40SEU

Entering Factory Mode

To enter "Service Mode" Press the remote -control keys in this sequence:

- If you do not have Factory remote – control.

POWER OFF > INFO > MENU > MUTE > POWER ON

If you have Factory remote – control

PICTURE ON > DISPLAY > FACTORY

The buttons are active in the service mode.

Remote - Control Key: Power, Arrow Up, Arrow Down, Arrow Left, Arrow Right, Menu, Enter, Number Key (0~9)

Function - Control Key: Power, CH +, CH -, VOL +, VOL -, Menu, TV/VIDEO (Enter)

Panel Check

Especially for LE26, 32R7**, you have to check Panel Maker Because of different adjustments as follows.

First of all, check the label rating.

Panel BOM (Bill of material): BN07-00289A

Connector between Panel and Power Unit

: BN39-00603M (300mm)

Option Byte

1. Gamma "AUO"

2. Panel Option "AUO"

If Panel Mark is "S" or not printed. Set the factory mode indicating as follows.

Panel BOM (Bill of material) : BN07-00247A

Connector between Panel and Power Unit

: BN39-00603M (300mm)

 Option Byte

1. Gamma "AMLCD"

2. Panel Option "AMLCD_INT"

If Panel Mark is "C”, Set the Factory mode indicating as follows.

Panel BOM (Bill of Material) : BN07-00207A

Connector between Panel and Power Unit: BN39-00659A (200mm)

 Option Byte

1. Gamma “CMO”

2. Panel Option “CMO”

Others are same shown below.

Factory Data

1. Calibration

2. Option Table XXXX XXXX

3. White Balance

4. SVP-FX

5. Option Block

6. STV8257/STA323W

7. YC Delay

8. Adjust

9. I2C Check

10. W/B MOVIE

11. Checksum

12. Reset

13. Spread Spectrum

T-MILMPEU-1006 (Main Micom Ver)

T-MILMPEUS-1002 (Sub Micom Ver)

Month - Day - Year - Hour - Min. - Sec.

Calibration

1) AV Calibration

2) DTV Calibration

3) PC Calibration.

Alignments and Adjustments

How to Update Flash ROM

1. Install the Flash Downloader

Connect Set (Service Jack) and Jig Cable to execute Program Update.

2. Flash Downloader program update

-Before turning on the set, Click "connect “which is under of OSD Screen.

-Turn on the Set.

White Balance – Calibration

If picture color is wrong, do calibration first.

Equipment: CA210, Patten: chess pattern

Execute calibration in Factory Mode

Source AV: PAL composite, Component: 1280*720-60Hz

PC: 1024*768-60Hz.

Sub brightness and R-G-B Offset controls low light region

Sub contrast and R-G-B Gain controls high light region

Source AV : PAL composite, Component : 1280*720-60Hz

HDMI [DVI] : 1280*720-60Hz

[Test Pattern: MSPG-945 Series Pattern #16]

Color temperature

1500K +or -500, -6 ~-20 MPCD

Color coordinate

H-L : 267-263 +or - 2 35.0 Ft + or - 2.0Ft

L-L : 270-260 + or - 3 1.5 Ft + or - 0.2Ft

Toshiba Patten

Conditions for Measurement

1. On the basis of Toshiba ABL pattern: High Light level (57 IRE)

- INPUT SIGNAL GENERATOR: MSPG-925LTH

* Mode NO 2: 744X484@60 Hz

NO 6: 1280X720@60 Hz

NO 21: 1024X768@60 Hz

* Pattern NO 36: 16 Color Pattern

NO 16: Toshiba ABL Pattern

2. Optical measuring device: CA210 (FL)

Please use the MSPG-925 LTH generator for model LE26M51B/LE32M51B/LE40M51B/LE46M51B.

Method of Adjustment

1. Adjust the white balance of AV, Component and DVI Modes. (AV > Component)

a) Set the input to the mode in which the adjustment will be made (RF > DTV > PC > DVI).

* Input signal - VIDEO Mode: Model #2 (744*484 Mode), Pattern #16

- DTV, DVI Mode: Model #6 (1280*720 Mode), Pattern #16

- HDMI Mode: Model #6(1280*720 Mode), Pattern #16.

b) Enter factory color control, confirm the data.

c) Adjust the low light. (Refer to table 1, 2 in adjustment position by mode) [Given above]

- Adjust sub - Brightness to set the 'Y' value.

- Adjust red offset ('x') and blue offset ('y') to the color coordinates.

d) Adjust the high light. (Refer to table 1, 2 in adjustment position by mode)

- Adjust red gain ('x') and blue gain ('y') to the color coordinates.

[Do not adjust the green gain and sub-contrast (Y) data.]

Adjust the high light. (Refer to table 1, 2 in adjustment position by mode) [Given above]

- Adjust red gain ('x') and blue gain ('y') to the color coordinates.

* Do not adjust the green gain and sub-contrast (Y) data.

Direct Reflecting® Car Stereo Speaker System

Bose 1401 four channels:  100 Watts continuous into 0.45 Ohms

Bose 1201 two channels: 50 Watts continuous into 0.45 Ohms

Individual Amplifiers: 25 Watts continuous into 0.45 Ohms resistive loads from 40 Hz to 17 kHz with less than .09% THD with 14.4 Volts DC.

Power Supply Tolerance: Will operate without noticeable performance defects between 10.5 and 16.5 Volts DC.

Speakers:

4 1/2" Driver, 6" x 9" Driver

2 or 4 full range drivers 1201 or 1401 II

Impedance:  0.45 Ohms

Maximum Power: 25 Watts (1201 and 1401 II has short circuit protection)

The following description is based on the 1401 II. The 1401 I is very similar with the exception of the short circuit protection, remote turn-on circuitry, compressor, and any reference to the use of the 6"x 9" speakers.

The Bose® 1401™ II Booster/Equalizer incorporates unique circuitry that is different from other auto amplifier designs. We ask that you take the time to read this technical description before attempting to service the 1401, and 1401 series II, as it will aid you in the repair process.

The Booster/Equalizer contains a preamplifier, equalizer, and short circuit protection circuitry, remote turn on/off circuitry, Spatial Control™, and two or four power amplifiers, each delivering 25 watts of power into 0.45 ohms.

The 1401, and 1401 II are compatible with all front end radio/tape or tape player auto units having their own amplifier, or preamplifier outputs. Low level inputs connect to the output of a front end unit having preamplifier outputs. The booster will produce full output with 250 mVrms applied to the low level input connections. If the front end has only speaker outputs, the high level inputs are utilized. The input signal is reduced by the 100k resistors R52, 53, 72, 73 and then fed to the same differential amplifier as the low level input signal. The high level inputs produce full output with a 2.75 volt input signal.

A differential amplifier U51 is used at the input to minimize sensitivity to alternator whine and other electrical noise. The differential amplifier feeds the equalizer. The equalization curve of the booster has been designed specifically for the drivers supplied with the units.

The first section of the equalizer adjusts the mid frequencies. The signals are then fed to the network driven by U52, 53, (pins 5 and 10) which provides both high frequency equalization and the bass slide control. This control provides boost or cut by approximately 8 dB centered at 170 Hz.

The signal then takes two paths. One is the low frequency path. The signals from the left and right channels are summed and fed through a low pass filter. This signal is fed to U53 (pin 12), the bass equalization circuitry. The output of the U53 (pin 14), becomes a common bass buss, which feeds the low frequency information to all four power amplifiers.

The second signal path is for the mid and high frequencies, which pass thorough the Spatial Control™. The slider is a front to back balance control for the mid and high frequencies. This is not a fader control. The slider maintains constant and total acoustic power for any spatial setting. The spatial control allows you to shift the mid and high frequency sound image between the front and rear speakers, with the sum of the power delivered to the front or rear speakers remaining the same. This allows great flexibility in compensating for the acoustic properties of various autos, vans, and trucks in which the system may be used. Also a switchable low pass filter, S1 (located on the rear of the unit) is in the second signal path. This control only affects the signal going to the rear speakers. In position I, the high frequencies going to the rear speakers are cut 6 dB/octave, starting at 5 kHz. In position II, the filter is disconnected. This control compensates for different speaker placement. For example: if the rear speakers were mounted higher than the front speakers, the high frequencies from the rear speakers might sound too bright relative to the front speakers, thus the low pass filter attenuating circuit would then be used.

The 1401™II has four separate power amplifiers. Each power amplifier receives a summed signal from the common bass buss, and the mid and high frequency information from the Spatial Control™ slider. Using all four speakers to reproduce the bass frequencies provides full rich bass response while directing the other frequencies to the appropriate, left/right/front/back speakers, to maintain proper spatial characteristics.

Each power amplifier uses a high slew rate operational amplifier (U11 left front, U21 left rear, U31 right front, U41 right rear). These ICs are the low level stage for each of the power amplifiers. Pins 4 and 7 of the ICs provide out-of-phase signals to the driver transistors. The voltage across the 47 Ohm resistor attached to pin 6 of each IC is proportional to the current flowing into the driver transistors.

The bias current of the driver transistors is device dependent. The emitter resistor voltage (R11, 12, 21, 22, 31, 32, 41, 42) divided by .47 Ohms will give you the bias current of that transistor. The bias current should typically be 20-60 mA, with a maximum of 140 mA.

The output transistors are unbiased. Therefore, the output waveform will show crossover distortion. "Glitches" will be visible at higher frequencies when driving a load. The distortion from these "glitches" is well above the range of human hearing.

Power is supplied to the 1401 from the vehicle's fuse block. This is fed directly to the output transistors. A network composed of R111 and C91 filters the 14.4 Vdc for all of the ICs in the unit. An 18V zener diode (D55) provides over voltage switching transient and load dump protection. U53, C92, R112, and R113 create a stable voltage that is 1/2 Vcc which is used as a "0" Volt reference for the audio signal.

The turn on/off transient eliminator circuit works in conjunction with the remote turn on and over current protection circuit. When power is applied to the 1401, the output of U52 goes high, which turns on Q63. This turns on Q15, 16, 25, 26 for the left amplifiers and Q35, 36, 45, 46 for the right amplifiers which prevents the driver and power transistors of each amplifier from turning on. This eliminates a turn on "thump" as the amplifiers stabilize during power up. U52's output will go low after approximately three seconds, turning off Q63, which turns off Q15, 16, 25, 26, 35, 36, 45, 46 which, in turn enables the driver and output transistors in the circuit to operate.

The turn off detector is Q51 and Q52. When the 1401 is turned off, Q51 turns off, turning on Q52. This makes the gate of SCR Q62 go high, turning on the SCR. This pulls the voltage of pin 6, U52 low, causing U52 to go high, turning on the transistors Q15, 16, 25, 26, 35, 36, 45, 46, which shuts off the driver and output transistors, eliminating any transients. In addition, whenQ52 goes high, it turns on Q61 And Q80 which discharges C53, the signal return capacitor through R142.

The remote turn on detector is Q53. When voltage is applied to the remote sense line, Q53 shuts off. This makes the gate of SCR Q62 go low, turning off the SCR. This allows C52 to charge, which brings the voltage of pin 6, U52 up, causing U52 to go low, turning on the driver and output transistors. Also, when Q53 shuts off, Q61 and Q80 shuts off, allowing C53 to charge.

The over-current protection network is Q54 and Q55. If the unit draws substantial current across either or both R137 or R139 the voltage approaches .6 volts, creating the same chain of events as previously mentioned in the turn off section. The over-current protection circuit will attempt to recycle a turn on approximately every three seconds. If the over-current conditions are still present, the unit will not turn on.

The 1401™ series I has a compressor circuit. This circuit contains two sections. IC U53, (pins 5, 6, and 7) is the clipping detector, and Z50, is used as a variable attenuator. The compressor affects only the common bass buss signal. Pin 6 of each of the differential amplifiers is tied to an overload signal buss, which is fed to Pin 5 of IC U53. Pins 5, 6, and 7 of IC U53 comprise a voltage comparator network. The voltage at Pin 6 of U53 is the threshold voltage of the comparator. When the voltage at Pin 5 goes negative with respect to Pin 6, due to any amplifier being over driven, the voltage of pin 7 will go negative, with respect to speaker reference (SR).  When the voltage of pin 7 goes negative, it turns on the LED, which is inside Z50, its resistance goes down, which attenuates the bass signal. In effect, if any amplifier begins to be over driven, the compressor circuitry is activated and will reduce the amount of common bass signal to the power amplifiers, thereby reducing the bass gain, preventing the amplifier from clipping, reducing potential distortion.

1201 Technical Description

The Bose® 1201 Booster/Equalizer is a two speaker system similar to the 1401™ II. In general, the same troubleshooting rules apply to both units. The RCA and high level inputs are the same, as well as the connectors for the power and speakers. The 1201 also has mute and short circuit protection circuits.

The 1201 has two amplifiers instead of four. The system has switchable equalization for the 4.5" driver or the new 6"x 9" speakers. The equalizer attenuates frequencies above 1kHz in the 4.5" position and turns off the bass equalization in the 6"x 9" position. The 1201 does not have Spatial Control™ or frequency controls.

A new feature for the 1201 is an input level control that provides the ability to interface with a variety of front ends. The input level control adjusts the amp gain for a power sensitivity of approximately 100-1000 mV (low level) and 1-10 Volts (high level) to produce 25 Watts of power per channel at full output at 1 kHz.

Also new in the 1201 amplifier is a compressor circuit. The compressor monitors the power amplifiers and reduces the input gain when the power amplifier begins to clip. Comprised of 1/2 of U1 and U3, U3 acts as a current controlled resistor across R109/209 whose equivalent resistance is inversely proportional to the current into pins 3/6. With no control current, U3 looks like an open circuit. As the current into pins 3/6 increases, the net resistance of R109/209 goes down and reduces the compressor amp gain. Control current is provided by detector/driver circuit of Q601-603. The outputs of the power amps (U4, U5, pin 6) pulses when the amp begins to clip. These pulses are detected by Q602, 603 and is filtered. The DC voltage is converted to control currents by R302, 402.

The mute circuit is different than in the 1401 II. It contains two comparators that serve as voltage and time delay sensors. U6, pins 1-3, senses the ANT SW control voltage and goes low if the ANT SW input or supply falls below 9-10 Volts. When U6, pin 1, goes high, C510 charges through R516. When C510's voltage exceeds that of U6, pin 6, (after approximately 2.5 seconds) pin 7 goes high and unmutes the amplifier. If U6, pin 1 goes low, C510 discharges immediately through D501 and mutes the amplifier. During short-circuit conditions, Q503 turns on and pulls U6, pin 2, high causing pin 1 to go low, starting the mute cycle.

Bose 1401, Bose 1401II block diagram for reference

TEST PROCEDURES

[Before connecting the Booster/Equalizer to the power supply, test the zener diode for a possible short by checking the resistance between the power and ground wires. Set your Ohmmeter to the x1 scale. Connect the leads of the meter to the red and black wires. In one direction (red to red, black to black) you should get a reading of infinity. In the other direction (red to black and black to red) you should get about .6 ohms for a reading.]

[The Booster/Equalizer has four separate amplifiers, two of which are 180º out of phase with the remaining two amplifiers. Also, the outputs are returned through the Booster/Equalizer's Speaker Reference. It is important to connect the unit as directed to prevent damage to the 1401 series I, or activation of the current protection circuits in the 1401 series II, and 1201. DO NOT connect speaker returns to ground.]

1401 II/1201 Power Wire Connection

Red wire is B+, Black wire is ground, Purple wire is Switched B+, and the Brown wire is Audio ground.

1401 I Speaker Wire Connection

Left Front

1. Output: White/Yellow

2. Return: White/Blue

Right Front

1. Output: White/Green

2. Return: White/Orange

Left Rear

1. Output: Gray/Blue

2. Return: Gray/Yellow

Right Rear

1. Output: Gray/Orange

2. Return: Gray/Green

1401 II/1201 Speaker Wire Connection

Left Front

1. Output: Yellow

2. Return: White

Right Front

1. Output: Green

2. Return: Orange

Left Rear

1. Output: Blue

2. Return: Yellow

Right Rear

1. Output: Orange

2. Return: Gray

Connection diagram

Test procedure

The Booster/Equalizer should be operated and tested using a 100 Ohm load for each of the speaker outputs until the unit functions properly. Center the bass control and Spatial Control.

Initial Turn-On Test

Connect the speaker to 100 Ohm loads and connect the power harness to a power supply at 13.8 Vdc.

Turn on the power supply and check the current draw. If the unit is drawing more than 250 mV shut off the power supply and check the outputs for shorts.

Note: On the 1401 II and the 1201 if the unit shuts off and then tries to turn on approximately every 3 seconds the outputs could be shorted.

Apply a 125 mV 1 kHz signal to the low level inputs and adjust the Spatial Control to electronically center (the front and rear output should be the same amplitude).

Low Frequency Response Test

Apply a 35 mV 1 kHz signal to the low level inputs.

Reference a dB meter to the output of the Booster/Equalizer.

Apply a 35 mV 100 Hz signal and slide the low frequency control to the minus (-) side. There should be a -6.5 dB ±1 dB decrease in output.

Center the control. Reference a dB meter to the output of the Booster/Equalizer.

Slide the control to the plus (+) side.  There should be a +6.5 dB ±1 dB increase in output.

Spatial Control, High Frequency, and Rear Switch Control Test

Apply a 35 mV 15 kHz signal to the low level inputs.

Reference a dB meter to the output of the Booster/Equalizer.

Slide the spatial control to maximum right (front speakers). There should be a +1 dB ±1 dB increase in output and a -30 dB cut to the rear speakers.

Slide the spatial control to maximum left (rear speakers). There should be a +1 dB ±1 dB increase in output and a -30 dB cut to the front speakers.

Center the spatial control and switch the rear high frequency switch to position I.  The rear output should be -10.5 dB ±1 dB from the front output.

Return the rear high frequency switch to position II.

Power and Distortion Test

Connect the speaker outputs to 0 .45 Ohm loads.

Apply a 1 kHz signal to the low level inputs and increase the input until the output signal just begins to clip. The output reading should be approximately 3.36 Volts.

Decrease the applied signal until the output reads 3.20 Volts. The distortion should be .09% for all four channels.

Note: The length and size of the wiring and the connection to the load is very important. Make sure the connections are as tight as possible to achieve correct distortion readings.

High Level Input Test

Apply a 1 kHz signal to the high level inputs.  Increase the input level until the output just begins to clip. The signal input reading should be approximately 2.75 Volts.

Protection Circuit Test

Note: This test is for the 1401 II and the 1201 only. Signal is applied to the low level input.

Apply a 1 kHz signal so the output of the unit is approximately 1.50 Volts.

Short anyone of the outputs to ground.  The unit should immediately shut down and then try to turn on every three seconds.

Remove the short. The unit should turn on and operate properly without damage to the channel that had been shorted.

PCB identification

 Applicable to models: KD-R440J, KD-R440JW, KD-R441E, KD-R441EN, KD-R441EU, KD-R441EY, KD-R442E, KD-R442EN, KD-R442EY, KD-R443E, KD-R443EN, KD-R443EY, KD-R444UI, KD-R445U, KD-R445UN, KD-R446EU, KD-R446U, KD-R446UN, KD-R446UP, KD-R446UT, KD-R447EE, KD-R449E, KD-R449EE, KD-R449UR, KD-R540J, KD-R541E, KD-R541EN, KD-R541EY, KD-R547EE

DETACHABLE PANEL

Power Output: 50 W per channel

Continuous Power Output (RMS): 20 W per channel into 4Ω, 40 Hz to 20 000 Hz at less than 1% total harmonic distortion.

Handling the traverse unit (optical pickup)
(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
(2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to the connector.
(3) Handle the flexible cable carefully as it may break when subjected to strong force.
(4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.

Identifying the CD Mechanism

This unit is equipped with one of the two CD mechanism types below.
• FLM-HC3-1D
• FLM-HC5-1D
Before sending the mechanism for repair, please check the following and refer to the corresponding materials.

DISASSEMBLY

Main body (Used model: KD-R441E)

Removing the Bottom chassis (See Fig.1)
(1) Disengage the 7 hooks a engaging the Bottom chassis.
(2) Slide the Bottom chassis backward to remove it.

Removing the Front chassis (See Fig.2)
(1) Disengage the 4 hooks b engaging both sides of the Front chassis.

Removing the Electric unit (See Fig.3, 4 and 5)
(1) Remove the 1 screw A attaching the Top chassis. (See Fig.3)

(2) Remove the 2 screws B attaching both sides of the Top chassis. (See Fig.4)

(3) Remove the 2 screws C and 1 clamp attaching the Electric unit. (See Fig.5)

(4) Disconnect the FFC wire connected to connector CN101 of the CD mechanism. (See Fig.6)

Removing the CD mechanism (See Fig.7)

(1) Remove the 2 screws D attaching the CD mechanism.

Removing the Switch unit (See Fig.8)
(1) Remove the Volume knob.
(2) Remove the 4 screws E attaching the Rear cover.
(3) Disengage the 12 hooks c engaging the Rear cover.

CD mechanism assembly section

Removing the Mecha control board
Removing the Mecha control board
(1) Solder the short land on the pickup. (See Fig. 1)

(2) Remove the 8 wires from the Mecha control board. (See Fig.2)

(3) Disconnect the flexible wire from the pickup connected to the connector CN102 on the Mecha control board. (See Fig.3)
(4) Remove the 2 screws A attaching the Mecha control board. (See Fig.3)

Removing the Traverse mechanism (See Fig.4, 5)
(1) Remove the 5 springs from the traverse mechanism. (See Fig.4)

(2) Remove the 3 screws B attaching the bottom frame assembly. (See Fig.5)
(3) Remove the 3 dumpers from the bottom frame assembly. (See Fig.5)

Removing the Pickup (See Fig.6, 7)
(1) Remove the 2 screws C attaching the feed bracket assembly. (See Fig.6)

(2) Remove the shaft from the TM base. (See Fig.7)
(3) Disengage the hook a on the pickup from the TM base. (See Fig.7)

Removing the Spindle motor (See Fig.8. 9)
(1) Remove the HC CL. Spring from the HC CL. base and the TM base, and then lift up the HC CL. base. (See Fig.8)

(2) Remove the HC CL. base from the holes on the TM base. (See Fig.9)

(3) Remove the 2 screws D attaching the spindle motor. (See Fig.10)

Removing the Loading motor
(1) Remove the roller arm assembly from the bottom frame assembly. (See Fig.11)

(2) Remove the 2 screws E attaching the loading motor assembly, and then remove the loading motor assembly in the direction of the arrow. (See Fig.12)

KD-R440J, KD-R440JW, KD-R441E, KD-R441EN, KD-R441EU, KD-R441EY, KD-R442E, KD-R442EN, KD-R442EY, KD-R443E, KD-R443EN, KD-R443EY, KD-R444UI, KD-R445U, KD-R445UN,
KD-R446EU, KD-R446U, KD-R446UN, KD-R446UP, KD-R446UT, KD-R447EE, KD-R449E, KD-R449EE, KD-R449UR, KD-R540J, KD-R541E, KD-R541EN, KD-R541EY, KD-R547EE

Service Test mode

Default status immediately after the mode activation
Operating Key: [MENU] + [ |<< ] (7sec) Press and hold.

How to release each Test mode
• Reset
• Acc off
• Power off
• Panel Detach

Mode content
Syscon shall display the following information after entering this mode. The operation shown below shall be workable.

Service Information Clear Mode

Default status immediately after the mode activation
* The receiver is connected with the DC power supply (with the power supply turned off).
Operating Key: [BACK] + [POWER] Press and hold + DC power supply turned ON

How to release each Test mode
• Reset
• Acc off
• Power off
• Panel Detach

Mode content
After entering this mode, Syscon shall clear the information stored for service and output the result to the display tube.
CD will be ejected upon process ended.
Preset Frequencies and Tagging (HD models) information shall be cleared.

DC error information mode

Default status immediately after the mode activation
* The receiver is connected with the DC power supply (with the power supply turned off).
Operating Key: [MENU] + [ >>|] Press and hold + DC power supply turned ON

How to release each Test mode
• Reset
• Acc off
• Power off
• Panel Detach

Mode content
Syscon shall display the following information after entering this mode. The operation shown below shall be workable.

DC offset error description

DC offset detection circuit design
• Purpose:
To prevent breakdown, burning and emitting smoke from customer's car speaker when occur DC offset between speaker output "+" and "-".
• Target:
Detect DC offset, then stop the Power Amp operation and shift to specified condition.

Possible causes of DC offset at speaker output lines
(1) Mis-connection for speaker output for example touch to car body or battery line.
(2) Current leak of coupling capacitor for Power IC input.
(3) Current leak of Ac-GND capacitor for Power IC Ac-GND.
(4) Capacitor shorted of above parts due to foreign object.

To detect DC offset Error
• Mis-connection
- Short any one speaker out line to GND or Vcc
• Capacitor leak
- Parallel 330kΩ to either any one of coupling cap or Ac-GND cap (to simulate current leakage of capacitor)
- Shorted either any one of coupling cap or Ac-GND cap.

Manipulate after detect DC offset
• If detected error 10 consecutive times, and 10th error occurred in "Mis-connect detection period", judge as "Mis-connect".
• If detected error 10 consecutive times, and 10th error occurred in "Capacitor leak detection period", judge as "Capacitor leak ".
• If detected error 10 consecutive times, and 10th error occurred in "Other detection period" and detected another 10 errors consecutively, then judge as "Other".
• If judge as "Mis-connect". - turn off speaker output.

- display "MIS WIRING"> "CHK WIRING"> "THEN RESET"> "UNIT".
- key access disable except button of Eject, Reset and service mode
- record error in EEPROM "DC1 ERR"
- Set is able to be recovered by Reset button.

• If judge as "Capacitor leak ".
- turn off speaker output.
- display "WARNING"> "CHK WIRING"> "THEN RESET">"UNIT".
- key access disable except button of Eject, Reset and service
mode
- record error in EEPROM "DC2 #" (# means counter number)
- Set can be recovered by pressing the Reset button before the capacitor leak error counter reach "DC2 4".
After that, only clear the counter back to "0" can recover the set.
• If judge as "Other" (manipulation same as mis-connect)

How to cancel DC offset error

Check to be sure the terminals of the speaker leads are covered with insulating tape properly, then reset the unit.
If an error message does not disappear even after a reset, there is a need for internal repair.

How to clear DC offset error recorded in EEPROM

DC Error Information Mode is started.
[MENU] + [ >>|] Press and hold + DC power supply turned ON
DC1 ERR > [ >>|] Press and hold.> DC1 OK
DC2 1-4 > [ |<<] Press and hold.> DC2 0

SCHEMATIC DIAGRAM

Kenwood CD receiver KDC-2023, KDC-2024SA/SG/SYA/SYG, KDC-2094YA/YG, KDC-222/S, KDC-3023

For continued safety, replace safety critical components only with manufacturer's recommended parts.  To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
 DC voltages are measured with a high impedance voltmeter. Values may vary slightly due to variations between individual instruments 

and units.

CD mechanism extension cord : WO5-0618-00

CD player schematic

System microcontroller Destination type list

Kenwood KDC-2023, 2024A/SG/SYA/SYG, 2094YA/YG, 222/S,3023 MICROCOMPUTER'S TERMINAL DESCRIPTION - MECHANISM MICROCOMPUTER MN6627771KP (X32 : IC2)

Kenwood 2024A/SG/SYA/SYG, 2094YA/YG, 222/S,3023 - MICROCOMPUTER'S TERMINAL DESCRIPTION

Kenwood KDC-2023, 2024A/SG/SYA/SYG, 2094YA/YG, 222/S,3023 COMPONENTS DESCRIPTION

22PFS5303-12, 22PFS5403-12, 22PFT5303-05, 22PFT5303-12, 24PFS5303-12, 24PFS5703-12 - Platform:  NT72461.  Chassis name: TPN18.1E LA

Always respect voltages.While some may not be dangerous in themselves, they can cause unexpected reactions that are best avoided. Before reaching into a powered TV set, it is best to test the high voltage insulation. It is easy to do, and is a good service precaution.

BOM identification

It should be noted that on the European Service website, “Alternative BOM” is referred to as “Design variant”.

The third digit in the serial number (example: AG2B0335000001) indicates the number of the alternative B.O.M. (Bill Of Materials) that has been used for producing the specific TV set. In general, it is possible that the same TV model on the market is produced with e.g. two different types of displays, coming from two different suppliers. This will then result in sets which have the same CTN (Commercial Type Number; e.g. 28PW9515/12) but which have a different B.O.M. number.

By looking at the third digit of the serial number, one can identify which B.O.M. is used for the TV set he is working with. If the third digit of the serial number contains the number “1” (example: AG1B033500001), then the TV set has been manufactured according to B.O.M. number 1. If the third digit is a “2” (example: AG2B0335000001), then the set has been produced according to B.O.M. no. 2. This is important for ordering the correct spare parts.

For the third digit, the numbers 1...9 and the characters A...Z can be used, so in total: 9 plus 26= 35 different B.O.M.s can be indicated by the third digit of the serial number.

Identification: The bottom line of a type plate gives a 14-digit serial number. Digits 1 and 2 refer to the production centre (e.g. SN is Lysomice, RJ is Kobierzyce), digit 3 refers to the B.O.M. code, digit 4 refers to the Service version change code, digits 5 and 6 refer to the production year, and digits 7 and 8 refer to production week (in example below it is 2010 week 10 / 2010 week 17). The 6 last digits contain the serial number.

Board Level Repair (BLR) or Component Level
Repair (CLR)
If a board is defective, consult your repair procedure to decide if the board has to be exchanged or if it should be repaired on component level.

If your repair procedure says the board should be exchanged completely, do not solder on the defective board.
Otherwise, it cannot be returned to the O.E.M. supplier for back charging.

Cable dressing

Service Alignment Mode (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.

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/DOWNkeys 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

The following update is for .pkg file.
1. Rename the file to “upgrade_loader.pkg”.
2. Prepare a USB memory (File format: FLAT, Size: 1G~8G).
3. Copy the software to USB flash disk (root directory).
4. Switch off the TV and Insert the USB memory stick that contains the software update files in one of the TV’s USB 2.0 port.
5. Switch on the TV. The TV will detect the USB memory stick automatically.

6. When the TV software is updated, the TV will turn on again automatically. Remove your USB flash drive.
7. We can enter in CSM to check the current software version.

The following update is for .upg file.

Rename the file to “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.

F/W Upgrade
1. Plug the USB memory on the TV’s USB 2.0 port.
2. AC on (Power plug).
3. TV will show message as below image, Press [Start] to detect the software automatically

4. Press [Start] to start software upgrade

5. Upgrade in progress.
6. After software upgrade complete, select [Restart] to reboot TV.

Check the SW version
1. After burning software, TV will restart.
2. 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

You can read the error buffer in below 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 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 OKbutton.
• 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 layout SSB

Power supply schematic

715G9368 SSB System POWER

Audio output schematic

DAEWOO Color Television CHASSIS : SC-140 Model : DSC-3210E

Service mode

To switch the TV set into service mode please see instruction below.

1 - Select pr. number 91
2 - Adjust sharpness to minimum and exit all menu.
3 - Quickly press the key sequence : RED - GREEN– Menu

To software version is displayed beside the word Service, e.g. “ SERVICE V1.00A”.

To exit SERVICE menu press menu key or St-By key.

Service mode navigation

Pr Up or Down remote keys > cycle through the service items available.

Vol [ - +] remote keys > Decrement / Increment the values within range.

0~7 digit keys > Toggle bits 0~7 in option byte.

Default settings for wp 895

Microcontroller configuration : Option bits
These option bits are available from Service mode. First find the OPTION control, and then use keys 0...7 on the remote keypad to control bits 0 to 7 respectively. The table below shows the options available.  [Set all the unused bits, marked 'X', to be 0 for future compatibility.]

Local oscillator alignment
Tune a color bar pattern. The Frequency of the signal carrier must be accurate (Max +/- 10khz deviation from the nominal channel frequency).
Find "AFT" item in service mode.
Adjust the coil L150 to bring the cursor to central position : 32.

G2 alignment
- Tune a color bar pattern.
- Find the "G2 - SCREEN" item in service mode.
- Adjust screen volume (on FBT) to bring the cursor to central position : 32.

White balance
- Select a dark picture and adjust RED BIAS and GRN BIAS to the desired colour temperature.
- Select a bright picture and adjust REC, GRN and BLUE GAIN to the desired dolour temperature.

White balance
- Select a dark picture and adjust RED BIAS and GRN BIAS to the desired colour temperature.
- Select a bright picture and adjust REC, GRN and BLUE GAIN to the desired dolour temperature.

Vertical geometry
Adjust V.LINEAR (linearity), S CORRECT
(S. Correction), VERT SIZE (Vertical amplitude),
VERT CENT (vertical canting) to compensate for vertical distortion.

Horizontal picture centering
Adjust HOR CEN(Horizontal center) to have the picture in the center of the screen.

Ea-West 
Adjust the PARABOLA, HOR WIDTH, CORNER, HOR PARAL, EW TRAPEZ, H BOW, to compensate for geometrical distortion,

AGC
- Adjust the antenna signal level at 70 dB V 2
- Tune a color bar pattern.
- Find the “ AGC” item in service mode.
- Adjust AGC volume ( RB10 ) to bring the cursor to central position : 32.

Data Capture
The Video Front End section takes in the analogue Composite Video and Blanking Signal (CVBS), and from this extracts the required data, which is then decoded and stored in memory.  The extraction of the data is performed in the digital domain. The first stage is to select and convert the analogue CVBS signal into a digital form. This is done using 8 bit ADC sampling at 20.25 Mhz.  The digital data services transmitted in the VBI are selected and acquired separately form the video part. This is done by the use of an adaptive data slicer. The following data types can be extracted : 625 line World System Teletext (WST), VPS, WSS. The data is acquired and decoded by the teletext decoder (TPU), then stored in an SRAM interface.

Data Capture Features
Video Signal Quality detector
Data Capture for 625 line WST
Data Capture for VPS data (PDC system A)
Data Capture for Wide Screen Signaling (WSS) bit decoding
Real-time capture and decoding for WST Teletext in Hardware, to enable optimized microprocessor throughput 10 page memory stored On-Chip.

Inventory of transmitted Teletext pages stored in the Page Table
Signal quality detector for WST data
Comprehensive Teletext language coverage
Full Field Vertical Blanking Interval (VBI) data capture of WST data.

MSP341x Multi-standard Sound Processor
The MSP 341x is designed as a single-chip Multi-standard Sound Processor for applications in analogue and digital TV sets, video recorders, and PC cards.

The MSP3411 has all functions of MSP3410 with the addition of a virtual surround sound feature.
A Surround sound affect can be reproduced with two loudspeakers. The MSP3411 includes virtualized algorithm “3D Panorama "which has been approved by the Dolby laboratories for compliance with the “ Virtual Dolby Surround "technology. In addition, the MSP3411 includes Micronase “  panorama” algorithm.

MSP 341x features :
- sound IF input
- No external filters required
- Stereo baseband input via integrated AD converters
- Two pairs of DA converters
- Two carrier FM or NICAM processing
- AVC : Automatic Volume Correction
- Bass, treble, volume processing
- Full SCART in/out matrix without restrictions
- Improved FM-identification
- Demodulator short programming
- Autodetection for terrestrial TV - sound standards
- Precise bit-error rate indication
- Automatic switching from NICAM to FM/AM or vice versa
- Improved NICAM synchronization algorithm
- Improved carrier mute algorithm
- Improved AM-demodulation
- Reduction of necessary controlling
- Less external components.

Demodulator and NICAM Decoder Section

The MSP 341x is designed to simultaneously perform digital demodulation and decoding of NICAM-coded TV stereo sound, as well as demodulation of FM or AM mono TV sound. Alternatively, two carrier FM systems according to the German terrestrial specs can be processed with the MSP 341x.

The MSP 341x facilitates profitable multi-standard capability, offering the following advantages:
- Automatic Gain Control (AGC) for analogue input: input range: 0.10 - 3 Vpp
- integrated A/D converter for sound-IF input
- all demodulation and filtering is performed on chip and is individually programmable
- easy realization of all digital NICAM standards (B/G, I, L and D/K)
- FM-demodulation of all terrestrial standards (include identification decoding)
- no external filter hardware is required
- only one crystal clock (18.432 MHz) is necessary.

DSP-Section (Audio Baseband Processing)
- flexible selection of audio sources to be processed
- performance of terrestrial de-emphasize systems (FM, NICAM)
- digitally performed FM-identification decoding and de-matrixing
- digital baseband processing: volume, bass, treble
- simple controlling of volume, bass, treble.

Analogue Section
- two selectable analogue pairs of audio baseband input (= two SCART inputs) input level: <2 V RMS,
input impedance: >25
- one selectable analogue mono input (i.e. AM sound): Not used in this chassis
- two high-quality A/D converters, S/N-Ratio: >85 dB
- 20 Hz to 20 kHz bandwidth for SCART-to-SCART copy facilities
- loudspeaker: one pair of four-fold oversampled D/A converters. Output level per channel:
max. 1.4 VRMS output resistance: max. 5 . S/N-ratio: >85 dB at maximum volume Max.
noise voltage in mute mode: < 10 V (BW: 20 Hz... 16kHz)
- one pair of four-fold oversampled D/A converters supplying a pair of SCART-outputs.
output level per channel: max. 2 V RMS, output resistance: max. 0.5 , S/N-Ratio: >85 dB (20 Hz... 16 kHz)

NICAM plus FM/AM-Mono

According to the British, Scandinavian, Spanish, and French TV-standards, high-quality stereo sound is transmitted digitally. The systems allow two high-quality digital sound channels to be added to the already existing FM/AM-channel. The sound coding follows the format of the so-called Near Instantaneous Commanding System
(NICAM 728). Transmission is performed using Differential Quadrature Phase Shift Keying (DQPSK. Table below offers an overview of the modulation parameters.)
In the case of NICAM/FM (AM) mode, there are three different audio channels available: NICAM A, NICAM B, and FM/AM-mono. NICAM A and B may belong either to a stereo or to a dual language transmission. Information about operation mode and about the quality of the NICAM signal can be read by the controlling software via the control bus.
In the case of low quality (high bit error rate), the controlling software may decide to switch to the analogue FM/AM mono sound. Alternatively, an automatic NICAM-FM/AM switching may be applied.

German 2-Carrier System (DUAL FM System)
Since September 1981, stereo and dual sound programs have been transmitted in Germany using the 2-carrier system.
Sound transmission consists of the already existing first sound carrier and a second sound carrier additionally containing an identification signal. More details of this standard are given in Tables below. For D/K very similar system is used.

TDA 4470-Multistandard Video-IF and Quasi Parallel Sound Processor.  TDA 4470 is an integrated bipolar circuit for multi-standard video/sound IF (VIF/SIF) signal processing in TV/VCR and multimedia applications. The circuit processes all TV video IF signals with negative modulation (e.g., B/G standard), positive modulation (e.g., L standard) and the AM, FM/NICAM sound IF signals.

Features
- 5V supply voltage ; low power consumption.
- Active carrier generation by FPLL principle (frequency-phase-locked-loop) for true synchronous demodulation.
- Very linear video demodulation, good pulse response and excellent intermodulation figures.
- Alignment-free AFC without external reference circuit, polarity of the AFC curve is switchable.
- VIF-AGC for negative modulated signals (peak sync. detection) and for positive modulation (peak white/black level detector).
- Tuner AGC with adjustable take over point.
- Alignment-free quasi parallel sound (QPS) mixer for FM/NICAM sound IF signals.
- Intercarrier output signal is gain controlled (necessary for digital sound processing).
- Complete alignment-free AM demodulator with gain controlled AF output.
- Separate SIF-AGC with average detection
- Two independent SIF inputs
- Parallel operation of the AM demodulator and QPS mixer (for NICAM-L stereo sound).

The TDA8944J( TDA 8946J) is a dual-channel audio power amplifier with an output power of 2 x 7W (2 X 15W) at an 8 load and a 12V supply. The circuit contains two Bridges Tied Load(BTL) amplifiers with an all-NPN output stage and standby/mute logic. The TDA8944J comes in a 17-pin DIL power package.

The TDA835xJ are power circuit for use in 90o and 110o color deflection systems for field frequencies of 25 to 200Hz and 16/9 picture tubes. The circuit provides a DC driven vertical deflection output circuit, operating as a highly efficient class G system. Due to the full bridge output circuit the deflection coils can be DC coupled.
The IC is constructed in a Low Voltage DMOS process that combines Bipolar, CMOS and DMOS devices.
MOS transistors are used in the output stage because of the absence of second breakdown.

The TDA6107Qincludes three video output amplifiers in one plastic DIL-Bent-SIL 9-pin medium power package, using high voltage DMOS technology, and is intended to drive the three cathodes of a color CRT directly. To obtain maximum performance, the amplifier should be used with black-current control.

Features
- Typical bandwidth of 5.5 MHz for an output signal of 60 Vpp
- High slew rate of 900V/ s
- No external components required
- Very simple application
- Single supply voltage of 200V
- Internal reference voltage of 2.5 V
- Fixed gain of 50.
- Black-current stabilization (BCS) circuit
- Thermal protection.

The STR-F6654is an hybrid IC with a build-in MOSFET and control IC, designed for fly-back converter type switch mode power supply applications.

- Small SIP fully isolated molded 5 pins package
- Many protection functions :
* Pulse-by-pulse overcurrent protection (OCP)
* Overvoltage protection with latch mode (OVP)
* Thermal protection with latch mode (TSD)

Schematic diagram and PWB

RF AGC (Automatic Gain Control) Adjustment,  Test Point - AGC TP (J05).  Adjust - Remote Control

The RF AGC was aligned at the time of manufacture for optimum performance over a wide range conditions.  Readjustment of RF AGC should not be necessary unless unusual local conditions exist, such as;

1) Channel interference in a CATV system.
2) Picture bending and/or color beats, which are unusually due to excessive RF signal input when the receiver is too close to a transmitting tower or when the receiver is connected to an antenna distribution system where the RF signal has been amplified. In this case, the input signal should be attenuated (with pad or filter) to a satisfactory level.
3) Picture noise caused by "broadcast noise" or weak signal.  If the broadcast is "clean" and the RF signal is at least 1mV (60dBu), the picture will be noise free in any area.

Adjusting RF AGC to one end of rotation will usually cause a relatively poor signal to noise ratio;
Adjusting to the other end of rotation will usually cause a degradation of over load capabilities resulting in color beats or adjacent channel interference.

Adjustment

1. Connect RF signal (65dB!0.2dB) and turn on the TV. [ Standard adjustment Channel]
- EU 05 Ch. (frf = 175.25MHz) : CK, CL, CB
- EU 41 Ch. (frf = 631.25MHz) : CI
2. Press OK buttons on TV set and Remote Controller at the same time to get into SVC-0 mode.
3. Press Channel UP/DOWN button on the Remote Controller several times to find AGC?
4. Press Volume UP/DOWN button until the AGC Voltage is the same as the Table below.
5. Press OK button to memorize the data.

Service mode

To enter SVC mode, press "OK" buttons on both TV set and the Remote control at the same time.

Preparation for Deflection Adjustment
1) At SVC mode, press the Yellow colored button.  If the Remote Controller doesn't have the Yellow button, you should use a Service Remote Control (105-201G) and press SVC button.
And then, deflection data adjustment OSD (SVC1 mode) will be displayed.
2) Press Channel UP/DOWN button for desirous function
Adjustment.
3) Press Volume UP/DOWN button to adjust the data.

Vertical Adjustment
Select VS and adjust until the mechanical centre of CPT and that of screen coincides and select VA and adjust to coincide the inner circle of screen with outer frame of CPT.

2) Horizontal Adjustment
Select HS and adjust until the mechanical centre of CPT and that of screen coincides.

3) Vertical S Correction Adjustment
Select SC and adjust until top-bottom side pincushion are equal.

4) Press OK button to memorize the data.

White Balance Adjustment.(LINE SVC-0)

[This adjustment should be performed after screen voltage adjustment.]

Tune the TV set to receive an 100% white pattern.
2) Press OK(Y) buttons on TV set and remote controller at the same time to get into SVC mode.
3) Press PSM(RED) button on remote controller. (Standard picture)
4) Press Channel UP/DOWN button for desirous function adjustment.
5) Adjust VOL+ or VOL- button for GG031.
6) Adjust VOL+ or VOL-button in each status of "Rg--""Bg--" for
X=293!8, Y=295!8 with color analyzer.
7) Press OK button to memorize the adjustment data.

OPTION Adjustment (SVC MODE: OPTION-1, OPTION-2)

[When the EEPROM has been replaced, the Option data should be restored as the function of individual system and specification.]

Press OK buttons on both TV set and Remote Controller at the same time to get into SVC mode.
2) Press the Yellow button several times to find OPTION-1 or OPTION-2.
3) Input the correspond OPTION data referring to Table below with the numeric buttons 0~9.

LG WP32A30 SCHEMATIC

LG WP32A30 adjustments-service mode

These instructions apply to MC-75A color television chassis.

1. Because this is a cold chassis, it is not necessary to use an insulation transformer. But, operate it using an insulation transformer between the power supply line and chassis input to prevent electric shock and to protect the test instrument.
2. The adjustment must be done by the correct appliances.
3. Unless otherwise noted, the receiver must be operated for about 10 minutes prior to the adjustment.

MPX Adjustment
(1) Connect the Oscilloscope to pin 3 of IC101 on Main PCB.
(2) Input Stereo signal.
(3) Adjust VR101 until the Audio Output waveform is like figure

Sub-Bright Adjustment
(1) Press ADJ button of the Adjustment Remote Control to select S-BRI.
(2) Press VOL +/- of the Adjustment Remote Control for proper Sub-Brightness (Standard :50)

Sub-Color Adjustment
(1) Press ADJ button of the Adjustment Remote Control to select S-COL.
(2) Press VOL+/- of the Adjustment Remote Control for proper Sub-Color. (Standard : 10)

Sub-Tint Adjustment
(1) Press ADJ button of the Adjustment Remote Control to select S-TIN.
(2) Press VOL +/- of the Adjustment Remote Control for proper Sub-Tint (Standard : 6)

TWIN PICTURE BRIGHTNESS (MAIN/SUB)
Adjust VR02 until the Brightness of both MAIN and SUB picture is same.

Focus Adjustment
(1). Input digital Pattern signal.
(2) Press PICTURE button to select standard picture.
(3) Press MODE button to select WIDE mode.
(4) Turn both Upper and Lower Focus control until the best overall focus.

Standard CONTRAST : 85%
BRIGHTNESS : 50%
COLOR : 50%
TINT : 0
SHARPNESS : 50%

Vertical Position Adjustment.
(1) Input Digital Pattern Signal
(2) Press PICTURE button to select standard picture.
(3) Select WIDE mode.
(4) Adjust VR301 on SMPS board for proper position.

H Size Adjustment
(1) Input Digital Pattern Signal.
(2) Press Picture button to select standard picture.
(3) Select WIDE mode.
(4) Adjust VR401 on SMPS board for proper H size.

Deflection setting Data Adjustment
(1) Press MENU and CH up buttons on the drawer together for about 2 seconds to get into Deflection setting mode.
(2) Press CH +/- to select adjustment item.
(3) Press CH +/- to change Data.
(4) Input Digital Pattern Signal and select the standard picture.

Vertical Amplitude Adjustment : Wide mode
(1) Press CH +/- button and select V-ASP.
(2) Press VOL +/- button for the proper amplitude.

Standard mode : Same as Wide mode.
Spectacle mode : Press VOL +/- until (A) of Digital Pattern coincides with upper and Lower frame.
Zoom1 mode : Press VOL +/- until (B) of Digital Pattern coincides with Lower frame.
Zoom2 mode : Press VOL +/- until (C) of Digital Pattern comes 7!3mm from the upper frame.

H Position Adjustment
(1) Press CH +/- button and select H-POS.
(2) Press VOL +/- button until left and right of screen is equal.

WHITE BALANCE Adjustment
(1) Input Digital Pattern signal
(2) Select Wide mode
(3) Press MENU and CH+ buttons on the drawer together for about 2 seconds to get into Deflection setting mode.
(4) Press CH+/- to select adjustment item.
(5) Press VOL +/- to change Data.

(1) Adjust Contrast and Brightness until the highlight area of signal is 30!3.5F.L.

(2) Select G-DRI and B-DRI and adjust to get the Highlight data (X=282!8, Y=288!8).
(3) Adjust Contrast and Brightness until the highlight area of signal is 4.5!0.5F.L.
(4) Select G-CUT and B-CUT and adjust to get the Low light data (X=282!8, Y=288!8).
(5) Repeat adjustment (1)~(4) above to get both Low and High light data.
(6) Check the result of adjustment using White Balance Meter
HIGH LIGHT : X=282!8, Y=288!8
LOW LIGHT : X=282!8, Y=288!8

OSD COLOR :

Green - Adjust at all modes

Cyan - Adjust only WIDE mode

Yellow - Adjust only WIDE mode, correction at other modes.

LG DVR GP248Software Download Method

The reason of software download: Software update is needed for the reason of correcting software bugs after the mass production.

Software download file (Extension type of download file is only XXX.epk)
1. Application file : app_modelname.epk (ex> app_50PY2DR-UA.epk)
2. Auto-demo file : autodemo_modelname.epk (ex> autodemo_50PY2DR-UA.epk)

Download Method
1. RS 232C
2. OAD
3. EPF Mode

Identify the software downloadSuccess or Fail

IN START Menu: Press the “IN-START” button of Factory Remote Control.

Host Diagnostics Menu: Press the “0” button of Remote Control three times consecutively when the CABLE item of Menu is highlighted.

Software Download Method : RS 232C

Connect the TV Set that is needed to the software update with the computer which contains the update file through the RS-232C cable and do the following things below for software download.

1. Execute the LG Terminal or DTV Lab. Terminal program.

2. on pressing the ‘1 ’button, reboot the TV system, then you can enter the Boot Menu phase like fig-1

3. Like in fig-2, press the ‘1’ button and execute the Flash Download (Serial) menu.

4. Execute the ‘File->Send file…’ menu, then select the file that you’d like to update.

5. You can see that software update data are downloaded.

6. If the download is completed, the TV set erases flash.  And then it writes the unpacked image to flash(programming flash).

7. If the work of unpacking and writing flash rom is completed, the TV set is rebooted by itself. The rebooted TV set has the updated software.

Warning: Don’t turn off your system in progress unpacking and writing flash ROM.

In case of CPLD downloading, repeat the process from 1 ~ to 5 (Downloading System and Mux file separately) and complete downloading by step 6. (file name : XXX.epk)

Software Download Method: OAD

OAD is the method which updates the TV software that TV sets receive from PSIP of the specific DTV channel.

1. Press ADJ button in the factory remote controller, then you can see the EzAdjust menu. Select OnAirDownload using ARROW key button.

2. Select the special DTV channel for OAD and press ENTER button.  –You can see the signal strength is strong.

3. If the TV set begin to receive OAD data, the bar is proceeding.  You can see the percentage number is grown up.

4. If the download is completed, you can see the message of “Unpacking and Writing Flash with OAD ROM Data….” In this state, the TV set is unpacking the downloaded files and writing the special flash ROM.

–If the work of unpacking and writing flash ROM is completed, the TV set is rebooted by itself. The rebooted TV set has the updated software.

–Warning: Don’t turn off your system in progress unpacking and writing flash ROM.

Software Download Method: with Memory Card

If thereis any problem on the way download application image then system abnormal unrecoverable state.

We should make minimal download mode for software download and the mode can’t be share with all different system.

Rule 1. We search all files of which extension is epk in root directory.

Rule 2. If memory card exists in both slots then slot 0 has more priority.
Rule 3. It shows version information of each epk file. If the epk file includes one more epk image then we show them all.
Rule 4. Until now, epk could be application, bootrom, gemster, four-div-image, auto-demo, and sain firmware. It could be more.
Rule 5. It’s possible to download firmware regardless model name, version etc because it’s expert mode.

Rule 1. We find a latest firmware. The found firmware version must be higher than current application version.
Rule 2. If there is no latest firmware than it works like normal memory card insert mode.
Rule 3. If memory card exists in both slots then slot 0 has more priority.
Rule 4. After we detect latest firmware it shows model name, file name, and application information of found epk file.
Rule 5. The epk file consists of more than one images and must have application image.
Rule 6. Until now, epk could be application, gemster, four-div-image, auto-demo, and sain firmware. It could be more.

Rule 7. It’s impossible to download firmware regardless model name, version etc because it’s expert mode.

Rule 8. If file system or edbms version is different then we put some warning below.  “All your list must be clean because of major change.”

Rule 1. During reading the firmware file if there is any error such as memory card detach then S/W download process is stopped and do system reboot.
Rule 2. During upgrade the firmware file if there is any error such as memory card detach then Software download process is stooped and do system reboot.
Rule 3. If something wrong with writing application image data then the system could be in unrecoverable state. If the system goes unrecoverable state user have to make a call to service center.
Therefore user must not remove the memory card form the slot during Software Upgrade.

Rule 1. software upgrade has just finished. We do some initial work and system reboot.
Rule 2. After system reboot new firmware images are available.
Rule 3. If File System or EDBMS version is different with before image then all user data such as recorded list, photo list, and music list could be cleared.

• EPK is extended existing PAK mechanism.
• EPK supports a merge option thus several kinds of images could be one EPK file.
• Now EPK support below:

• EPK can support more various kind of image files.
• There is no limitation the number of images which integrate with a epk file but the biggest image size must be smaller than system memory can support.

 AlwaysMake sure to disconnect the power before working on the IP board.

Troubleshooting - No Power

Check the various cable connections first.
• Check to see if there is a burnt or damaged cable.
• Check to see if there is a disconnected or loose cable connection.
• Check to see if the cables are connected according to the connection diagram.

Check the power input to the Main Board.

How to check fault symptom

* The LEDs on the front panel do not work when connecting the power cord.
* The SMPS relay does not work when connecting the power cord.
* The units appears to be dead.

The IP relay or the LEDs on the front panel does not work when connecting the power cord if the cables are improperly connected or the Main Board or SMPS is not functioning.
In this case, check the following:
- Check the internal cable connection status inside the unit.
- Check the fuses of each part.
- Check the output voltage of SMPS.
- Replace the Main Board.

No video - HDMI1, 2 - Digital signal

Audio is normal but no picture is displayed on the screen.

* Check the HDMI source.
* Check the HDMI switch, Check the Chelsea.
* This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.

No Video_Tuner – CVBS

Audio is normal but no picture is displayed on the screen.

* Check the Tuner CVBS source.
* Check the Tuner, Check the Chelsea.
* This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.

No Video - Tuner DTV

Audio is normal but no picture is displayed on the screen.

* Check the DTV source.
* Check the Tuner, Check the Chelsea.
* This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.

No Video - Video CVBS

Audio is normal but no picture is displayed on the screen

* Check the Video CVBS source
* Check the Chelsea.
* This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.

No Video-Component

Audio is normal but no picture is displayed on the screen.

* Check the Component source
* Check the Chelsea.
* This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.

No Sound

* When the speaker connectors are disconnected or damaged.
* When the sound processing part of the Main Board is not functioning.
* Speaker defect..

Entering Factory Mode

Samsung LED LCD TV UN19D4003BD, UN26D4003BD, UN32D4003BD, UN22D5003BF, UN40D5003BF, LN32D40*E*D wiring diagram how to update the software, version check and more - U59C and U59E chassis

How to Upgrade SW and Micom

Insert a USB drive containing the firmware upgrade downloaded from samsung.com into the TV.
Be careful to not disconnect the power or remove the USB drive while upgrades are being applied. The TV will turn off and turn on automatically after completing the firmware upgrade. Please check the firmware version after the upgrades are complete (the new version will have a higher number than the older version). When software is upgraded, video and audio settings you have When software is upgraded, video and audio settings you have you write down your settings so that you can easily reset them after the upgrade.

Main SW upgrade

1. Store the software program named "T-MX5FAUSC"(FHD) or "T-MX5HAUSC"(HD) in USB memory stick.

Connect the USB.

2. Click the MENU key in remote controller.

3. Select Support menu.

Locate the menu cursor Software Upgrade menu.

4. Click the ENTER key.

5. Click the ENTER key. - Wait for upgrade complete and check the SW version.

How to check the SW version

Software Upgrade can be performed by downloading the latest firmware from samsung.com to a USB memory device. Current Version - the software already installed in the TV.

Note : Software is represented as ‘Year/Month/Day-Version’

How to check the SW version

Use the main menu
1. Click the “menu” key in remote controler.
2. Select Support menu.
3. Locate the menu cursor “Software Upgrade” menu.
4. Click the “info” key.
5. Check the Main SW and Micom version.

Wiring diagram

Position of Connectors

UN19D4003BD

UN32D4003BD - UN26D4003BD

UN22D5003BF

UN40D5003BF

LN32D40*E*D

Connector Functions and cables

 US Model HCD-D60-RX70, Canadian Model, AEP Model, UK Model - HCD-RX70, E Model - HCD-GR7-GR7J, Australian Model - HCD-GR7

  Always respect voltages. While some may not be dangerous in themselves, they can cause unexpected reactions that are best avoided. Before reaching into a powered set, it is best to test the high voltage insulation. It is easy to do, and is a good service precaution.  It makes sense to avoid exposure to electrical shock.  While some sources are expected to have a possible dangerous impact, others of quite high potential are of limited current and are sometimes held in less regard.

Continuous RMS power output

Canadian model:  100+100 watts (8 ohms at 1 kHz, 5% THD)

AEP, German, East European, UK and CIS models:  55+55 watts (6 ohms at 1 kHz, 10% THD)

Other models:  70+70 watts (6 ohm sat 1 kHz, 10% THD)

Peak music power output (GR7-GR7J):  1000 watts

(AEP, German, East European, UK and CIS model):  95+95 watts (6 ohms at 1kHz, 10% THD)

CD Section:

CD Mechanism Type: CDM38-5BD29AL

Base Unit Name: BU-5BD29AL

Optical Pick-up Name: KSS-213D-Q-NP

Tape deck Section:

Model Name Using Similar Mechanism: HCD-H881

Tape Transport Mechanism Type: TCM-220WR2

SPEAKER : 

accepts impedance of 8 to 16 ohms (D60-RX70) 

accepts impedance of 6 to 16 ohms (GR7-GR7J)

SURROUND SPEAKER (US and Canadian models): 

accepts impedance of 16 ohms.
SUPER WOOFER (GR7-GR7J-RX70 : US and Canadian models): 

Voltage 1 V, impedance 1 kilo ohm

The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts.
The flexible board is easily damaged and should be handled with care.

Test mode

[MC 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.

1. Press three buttons SPECTRUM ANALYZER , ENTER-NEXT , and DISC 1 simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously, and the set is reset.

 [CD Delivery Mode]

* This mode moves the pickup to the position durable to vibration. Use this mode when returning the set to the customer after repair.
1. Press POWER button to turn the set ON.
2. Press PLAY button and POWER button simultaneously.
3. A message “LOCK” is displayed on the fluorescent indicator tube, and the CD delivery mode is set.

 [MC Hot Reset]

* This mode resets the set with the preset data kept stored in the memory. The hot reset mode functions same as if the power cord is plugged in and out.
1. Press three buttons SPECTRUM ANALYZER , ENTER-NEXT , and DISC 2 simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously, and the set is reset.

[Sled Servo Mode]
* This mode can run the CD sled motor freely. Use this mode, for instance, when cleaning the pickup.
1. Select the function “CD”.
2. Press three buttons SPECTRUM ANALYZER , ENTER/NEXT , and FUNCTION simultaneously.
3. The Sled Servo mode is selected, if “CD” is blanking on the fluorescent indicator tube.

4. With the CD in stop status, press >> button in CD section to move the pickup to outside track, or << button to inside track.

5. To exit from this mode, perform as follows:
1) Move the pickup to the most inside track.
2) Press three buttons in the same manner as step 2.

Note:
* Always move the pickup to most inside track when exiting from this mode. Otherwise, a disc will not be unloaded.
* Do not run the sled motor excessively, otherwise the gear can be chipped.

 [Change-over of FUNCTION Name]
* The FUNCTION name of external input terminal can be changed over to VIDEO or MD.
1. Press POWER button to turn the set OFF.
2. Press POWER button together with FUNCTION button, and the power is turned on, the display of fluorescent indicator tube changes to “MD” or “VIDEO” instantaneously, and thus the FUNCTION is changed over.

[Change-over of AM Tuner Step between 9kHz and 10kHz]
* A step of AM channels can be changed over between 9kHz and
10kHz.
1. Press POWER button to turn the set ON.
2. Select the function “TUNER”, and press TUNER/BAND button to select the BAND “AM”.
3. Press POWER button to turn the set OFF.
4. Press ENTER-NEXT and POWER buttons simultaneously, and the display of fluorescent indicator tube changes to “AM 9k STEP” or “AM 10k STEP”, and thus the channel step is changed over.

[LED and Fluorescent Indicator Tube All Lit, Key Check Mode]
1. Press three buttons SPECTRUM ANALYZER , ENTER-NEXT , and DISC 3 simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.  Press DISC 2 button, and the key check mode is activated.
3. In the key check mode, the fluorescent indicator tube displays “K 1 V0 J0”. Each time a button is pressed, “K”value increases.  However, once a button is pressed, it is no longer taken into account.
“J” value increases like 1, 2, 3 ... if rotating JOG knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “–” direction.
“V” value increases like 1, 2, 3 ... if rotating VOLUME knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “–” direction.
4. To exit from this mode, press three buttons in the same manner as step 1, or disconnect the power cord.

[Aging Mode]
This mode can be used for operation check of CD section and tape deck section.
* If an error occurred: The aging operation stops.
* If no error occurs: The aging operation continues repeatedly.

Aging Mode in CD Section
1-1. Operating Method of Aging Mode
1. Set discs in DISC1 and DISC2 trays.
2. Select the function “CD”.
3. Press three buttons SPECTRUM ANALYZER , ENTER-NEXT , and KARAOKE PON/MPX simultaneously.
4. The aging mode is activated, if a roulette mark on the fluorescent indicator tube is blinking.
5. In the aging mode, the aging is executed in a sequence given in “1-2. Operation during Aging Mode”. The aging continues unless an alarm occurred.
6. To exit from the aging mode, press POWER button to turn the set OFF.
* If a button other than buttons In CD section is pressed during aging, the aging in the CD section is finished.

* To execute aging to the tape deck section successively, press > button in the deck A.  “AGING” is displayed on the fluorescent indicator tube. (For the aging in tape deck, see “2. Aging Mode in Tape Deck Section”.

1-2. Operation during aging Mode
In the aging mode, the program is executed in the following sequence.

1. The disc table is ejected.
2. The disc tray turns to select a disc. (For a disc selection sequence, see Section 1-3.)
3. TOC of disc is read.
4. The pickup accesses to the last track.
5. A disc is ejected.
6. Steps 2 through 5 are repeated.

1-3. Disc Selection Sequence
* During the aging mode, discs are selected in the following sequence:

Disc 1 > Disc 2 > Disc 2 < Disc 1 >  [repeats]

2. Aging Mode in Tape Deck Section
2-1. Operating Method of Aging Mode
1. Load a commercially available 10-minute tape into the decks A and B respectively.
(If a 10-minute tape is not available, another tape may be used but a cycle time will be longer.)
2. Select the function “TAPE”.

3. Rewind tapes in advance by pressing <<  button respectively on decks A and B

4. Press three buttons SPECTRUM ANALYZER , ENTER-NEXT , and KARAOKE PON-MPX simultaneously.

5. Press PLAY button on deck A. (This button triggers the aging mode.) button on deck A. (This button triggers the aging mode.)

7. In the aging mode, the aging is executed in a sequence given in “2-2. Operation during Aging Mode”.
The aging continues unless an alarm occurred.
8. To exit from the aging mode, press POWER button to turn the set OFF

2-2. Operation during Aging Mode
In the aging mode, the program is executed in the following sequence.
1. A tape on FWD side is played for one minute.
2. PAUSE STOP is made.
3. Recording is made for 3 minutes. (For the deck not having the record function, the play is executed. In this case, > LED does not light up.)

4. FF is executed up to the end of tape.
5. A tape is reversed, and the tape on REV side is played for one minute.
6. PAUSE STOP is made.
7. Recording is made for 3 minutes. (For the deck not having the record function, the play is executed. In this case, <  LED does not light up.)

8. FF is executed up to the end of tape.
9. Steps 1 through 8 are executed for the other deck.
10. Steps 1 through 9 are repeated unless an alarm occurred.

2-3. Deck Selection Sequence
* During the aging mode, decks are selected in the following sequence:

Deck A (FWD)  >  Deck A (REV) > Deck B (REV) > Deck B (FWD) > [repeats]

PCB locations

Audio board schematic

Emerson 39 Inch LCD TV LF391EM4 A, MAGNAVOX 39ME313V-F7 A

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 following 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 as follows.

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

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

Purpose: To mix red and blue beams correctly for pure white.

Symptom of Maladjustment: White becomes bluish or reddish.

Adjustment

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.

Note: 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.)

6. Press [MENU] button. The internal Raster signal appears in the screen. (“Internal (Single)” appears in the upper right of the screen as shown below.)

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”, “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”, “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.

How 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.

NOTE: Disconnect any device from the USB Port before you conduct on this procedure.

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.

FIRMWARE RENEWAL MODE

User Upgrade
(Filename example: TVNB012_00_UF_XX91_BC.ecc or TVNB2001_00_UH_XX91_BB1.bin)
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 as shown below.

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 following will appear in the screen.

Note: 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_BC.ecc or FACT_TVNB2001_00_UH_XX91_BB1.bin)
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_BC.ecc or ALL_TVNB2001_00_UH_XX91_BB1.bin)
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.

Update procedure
1. Turn the power off.
2. Insert the USB storage device to the USB port as shown below.

3. Turn the power on.
4. The update will start and the following will appear in the screen.

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

5. 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.
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.

Power supply (SMPS) schematic

CAUTION: 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.

Because a hot chassis ground is present in the power supply circuit, an isolation transformer must be used when repairing.
Also, in order to have the ability to increase the input slowly, when troubleshooting this type of power supply circuit, a variable isolation transformer is required.

Digital main schematic

Function CBA

Ultra Slim Fit CRT, Multi Wide System, Turbo Plus, SOUND Equalizer - CW-21Z453N - S16C Chassis

Core Parts Functions
- TDA12025PQ : Video/Sound Processing1 x MICOM
- STR-W6750F : SMPS Power STR
- TDA7297SA : 5W ~ 15W Sound Output BTL AMP
- 24C16 : 16K EEPROM
- LA7845 : Vertical Deflection AMP
- C5936 : H-OUT S/W TR
- TDQ-6L : F/S PAL Tuner(LNA Option)
- TDA6107JF : R/G/B Drive AMP IC
- Flyback Trans : BSC29-0156G(11P,27KV)

Feature
- AKB(Auto Kinetic Bais)
- Comb Filter : 4H Comb Filter
- Picture Size : 4:3
- NICAM / STEREO / Line-STEREO
- Auto STEREO, Sound Equalizer, Auto Mute, Auto Volume Limit, PSEUDO STEREO, TURBO PLUS
- Composite (RCA A/V,DVD)
- Rear : 42P Scart Input/output (Scart1 R/G/B Input)
- Front or Side A/V Input (Side A/V Preferability), Headphone.

General Adjustment :
In general, a color TV can provide ideal visual quality by adjusting the basic settings such as the vertical size, horizontal size, focus, etc.
Display a black and white picture on the screen to check if the picture is clearly displayed.
If there are some 'spotted' points on the screen when displaying a black and white picture, degauss the screen using the degauss coil. If the spotted points remain, re-adjust the purity and the convergence.
This completes the basic performance examination.

These adjustments and the check list are only applied to S16C chassis-applied models.
Only use 230V for the measurement set. It is recommended using an insulation transformer when supplying power to the set so as to prevent shock to the set or to yourself.
These adjustment specifications have been created on the basis of the domestic S16C chassis-applied remote control model. Some of the contents may be changed subject to the sales location.

When replacing the MAIN Board : Tilt adjustment, Focus adjustment, Screen voltage, W/B adjustment are all required. Since the settings including the Channel information, Deflection, etc. are saved to the EEPROM, reconfigure these settings when replacing the MAIN Board.
The notation of the software information : T-NARPEU-1000 refer to "NARNIA BASIC MODEL EUROPE.VER.1000"
Since the settings including the Channel information, Deflection, etc. are saved to the EEPROM, reconfigure these settings when replacing the MAIN Board.

2. When replacing the CRT Ass'y : No adjustments required
3. When replacing the front panel Master Power switch : No adjustments required
4. When replacing the Side AV Ass'y : No adjustments required
5. When replacing the PIP Module : No adjustments required
6. When replacing the Control Ass'y : No adjustments required
7. When replacing the PFC Ass'y : No adjustments required

Service Mode

To enter Service Mode, press the keys on the remote control according to the following sequence. (in Stand-by status)

Info → Menu → Mute → Power On

When failing to enter Service Mode, repeat the procedure above.

The initial screen of Service Mode.

Option1 XX XX XX XX XX
Option2
Deflection
WSS Deflection
Video Adjust1
Video Adjust2
Video Adjust3
Video Adjust4
Video Adjust5
YC Delay
Others
Bus Stop Off
CHECKSUM 0000
G2 Adjust
RESET
T-NARPEU-1000 2006/XX/XX

Functions of the Keys within Service Mode.

MENU > Show all menus

▲ / ▼ > Move the cursor to select an item.

◀/ ▶> Adjust the selected configuration value

White Balance > x:286±3 y:290±3 Y:40±3 x:286±3,  y:290±3 Y:2.0±.3

Factory data

Software Upgrade

1. Checking the Version of the Software (Analog SW)

To enter Service Mode, press the keys on the remote control according to the following sequence. (in Stand-by status)
Info → Menu → Mute → Power On

2. When entering Service mode, the software information is displayed at the top of the service mode menu OSD. ex) T-HITPEU-1000 2005/0X/XX

Service Download Procedure

Double click the your desktop “WISP” icon.

2. Check the standard
- Check the appoint “Picasso N2”
- Check the “Flash selection” item is appoint “Manual”
- You can adjust program delay time for program speed but we use the normal “5[ms]”
- Check the green lamp if this is sometime red lamp you can not programming.

3. Check the IIC line
- Click the “Enter ISP Mode” button For IIC bus line problem or not
- Change the “Press Send to enter ISP Mode”
- Click the “Send” button.

4. Erase before program
- Click the “Erase Flash” button for before program erase
- You can select flash selection item but we use normal “All” mode
- Change the “Select flash ROM to erase. When ready press Send.”
- Click the “Send” button

5. Write new program
- Click the “Write Flash” button for new program download
- Change the “Load.hex file to program flashes.”
- Click the “Browse” button and find the new program folder in your computer
- Click the “Send” button

6. Verify new program
- Click the “Verify Flash” button
- Change the “Select flash to verify correct programming.
When ready press Send.”
- Click the “Send” button.

Adjusting the Focus

Since the S16C chassis has a built-in single focus circuit, take care when adjusting the focus. When the CRT PCB, FBT or CRT has been replaced, the focus has to be adjusted according to the following procedures.

1. Display the CROSS Hatch pattern.
2. Set the Screen Adjustment to "View as Standard".
3. Turn the Static Focus VR clockwise to the maximum position.
(End of clockwise direction)
4. Slowly turn the Static Focus VR counter clockwise so that the center vertical line
is the most clearly displayed. [adjusted point : Center(2/1)]

5. Check the entire screen focus and repeat steps 3 to 4, if necessary.

Adjusting the Screen Voltage

1. Select "Power Off →Info → Menu → Mute → Power On" to enter Service Mode.
2. Initialize all settings to the values appropriate to the corresponding model.
3. Display the Toshiba pattern.

4. First check IBRM in "G2 Adjust" of Factory and adjust Screen VR until the color of IBRM item turns green.

Adjusting the White Balance

1. Initialize all settings to the values appropriate to the corresponding model.
2. Select "Info → Menu → Mute → Power On" to enter Service Mode.
3. Initialize all settings to the values appropriate to the corresponding model.
4. Display the Toshiba pattern and adjust the White Balance using CA100 with the coordinates of the corresponding model.

5. Enter Video Adjust1 of Service Mode. Adjust Low/Light.
- Adjust Sub Bright to set Y.
- Adjust B Cutoff to set y.
- Adjust R Cutoff to set x.

6. Enter Video Adjust1 of Service Mode. Adjust High/Light.
- Adjust Sub Contrast to set Y.
- Adjust B Drive to set y.
- Adjust R Drive to set x.

7. Check Low/Light and readjust it if its value has been changed.

8. If you have readjusted Low/Light, readjust High/Light until the two values are identical to the coordinates of the corresponding model.

White Balance Standard Data

Check List for the Screen Voltage and White Balance Adjustment

1. The Screen Voltage and White Balance are connected each other, and both of them have to be configured to the correct values.
2. Adjust the White Balance after the Screen Voltage was adjusted, and check if the Screen Voltage is normal after adjusting the White Balance.
3. If the White Balance is readjusted, check the Screen Voltage again.
4. When the adjustment is finished, check the following checklist.
- If there is a spot on the screen when turning the TV set off/on, adjust the Screen Voltage again.
- If there is a ghost line on the screen, adjust the Screen Voltage again.

Names & Roles of Key Parts
* CN601 : A 4 pin port connected to the SPEAKER port, which delivers the signal from the AMP to the speakers.
* CN602 : A 5 pin port connected to the AV ASSY, which delivers the signal to the headphone.
* CN501 : A 9 pin port connected to the CRT ASSY, which outputs the R/G/B signal to the CRT ASS'Y for display and Power signals to the CRT DRIVE.
* CN701 : A 8 pin port connected to the AV ASSY, which receives AV2 external input.

Main board and connector board functions

Schematic diagram – Power

Schematic diagram  - Main

Schematic diagram – CRT and Sound

Main PWB: Vestel 17MB08, 17MB15

Service menu

To enter the service menu, first enter the MENU by pressing MENU button and then press the digit 4, 7, 2and 5respectively.

Picture adjust: source:  all possible sources given with the chassis as list.

Mode:  three items as a list; Natural, Dynamic, Cinema

Color temp:  three items as a list; Cool, Normal, Warm.

Contrast:  slider bar.  Changing value between 0 and 63.

Brightness: slider bar.  Changing value between 0 and 63.

Sharpness:  slider bar.  Changing value between 0 to 31.

Color: slider bar.  Changing the value between 0 to 99.

R:  slider bar. Changing the value between 0 to 31.

G:  slider bar.  Changing the value between 0 to 31.

B:  slider bar.  Changing the value between 0 to 31.

Backlight:  slider bar.  Changing the value between 0 to 255.

In this menu preset values for each mode (contrast, brightness, sharpness, color values for each mode NATURAL, DYNAMIC, CINEMA and for each color temp: R, G, B values for each color temp- COOL, NORMAL, WARM are determined for each source.

Block diagram

PCB layout

RESONANT MODE TFT POWER SUPPLY: 26, 32 and 37 inch Hitachi LCD TVs

Applicable to: Mitsubishi Airconditioners  MUZ-SF25VE MUZ-SF25VEH MUZ-SF35VE MUZ-SF35VEH MUZ-SF42VE MUZ-SF42VEH

DISASSEMBLY INSTRUCTIONS

<"Terminal with locking mechanism" Detaching points>
The terminal which has the locking mechanism can be detached as shown below.
There are two types (refer to (1) and (2)) of the terminal with locking mechanism.
The terminal without locking mechanism can be detached by pulling it out.
Check the shape of the terminal before detaching.

Removing the cabinet
(1) Remove the screw fixing the service panel.
(2) Pull down the service panel and remove it.
(3) Disconnect the power supply and indoor/outdoor connecting wire.
(4) Remove the screws fixing the top panel.
(5) Remove the top panel.
(6) Remove the screws fixing the cabinet.
(7) Remove the cabinet.
(8) Remove the screws fixing the back panel.
(9) Remove the back panel.

Removing the inverter assembly, inverter P.C. board
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the lead wire to the reactor and the following connectors:
<Inverter P.C. board>
CN721 (R.V. coil)
CN722 (Defrost heater) MUZ-SF25/35/42VEH
CN931, CN932 (Fan motor)
CN641 (Defrost thermistor and discharge temperature thermistor)
CN643 (Ambient temperature thermistor)
CN644 (Outdoor heat exchanger temperature thermistor)
CN724 (LEV)
(3) Remove the compressor connector (CN61).
(4) Remove the screws fixing the heat sink support and the separator.
(5) Remove the fixing screws of the terminal block support and the back panel.
(6) Remove the inverter assembly.
(7) Remove the screw of the earth wire and screw of the terminal block support.
(8) Remove the heat sink support from the P.C. board support.
(9) Remove the screw of the inverter P.C. board and remove the inverter P.C. board from the P.C. board support.

Removing R.V. coil
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the following connectors:
<Inverter P.C. board>
CN721 (R.V. coil)
(3) Remove the R.V. coil.

Removing the discharge temperature thermistor, defrost thermistor, outdoor heat exchanger temperature thermistor and ambient temperature thermistor
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the lead wire to the reactor and the following connectors:
<Inverter P.C. board>
CN641 (Defrost thermistor and discharge temperature thermistor)
CN643 (Ambient temperature thermistor)
CN644 (Outdoor heat exchanger temperature thermistor)
(3) Pull out the discharge temperature thermistor from its holder.
(4) Pull out the defrost thermistor from its holder. (Photo 6)
(5) Pull out the outdoor heat exchanger temperature thermistor from its holder.
(6) Pull out the ambient temperature thermistor from its holder.

Removing outdoor fan motor
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the following connectors:
<Inverter P.C. board>
CN931, CN932 (Fan motor)
(3) Remove the propeller nut.
(4) Remove the propeller.
(5) Remove the screws fixing the fan motor.
(6) Remove the fan motor.

Removing the cabinet
(1) Remove the screws of the service panel.
(2) Remove the screws of the top panel.
(3) Remove the screw of the valve cover.
(4) Remove the service panel.
(5) Remove the top panel.
(6) Remove the valve cover.
(7) Disconnect the power supply and indoor/outdoor connecting wire.
(8) Remove the screws of the cabinet.
(9) Remove the cabinet.
(10) Remove the screws of the back panel.
(11) Remove the back panel.

Removing the inverter assembly, inverter P.C. board
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the lead wire to the reactor and the following connectors:
<Inverter P.C. board>
CN721 (R.V. coil)
CN722 (Defrost heater) MUZ-SF50VEH
CN931, CN932 (Fan motor)
CN641 (Defrost thermistor and discharge temperature thermistor)
CN643 (Ambient temperature thermistor)
CN644 (Outdoor heat exchanger temperature thermistor)
CN724 (LEV)
(3) Remove the compressor connector.
(4) Remove the screws fixing the heat sink support and the separator.
(5) Remove the fixing screws of the terminal block support and the back panel.
(6) Remove the inverter assembly.
(7) Remove the screw of the earth wire, screw of the P.C. board cover and screws of the terminal block support.
(8) Remove the heat sink support from the P.C. board support.
(9) Remove the screw of the inverter P.C. board and the inverter P.C. board from the P.C. board support.

Removing R.V. coil
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the following connector:
<Inverter P.C. board>
CN721 (R.V. coil)
(3) Remove the R.V. coil.

Removing the discharge temperature thermistor, defrost thermistor, outdoor heat exchanger temperature thermistor and ambient temperature thermistor
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the lead wire to the reactor and the following connectors:
<Inverter P.C. board>
CN641 (Defrost thermistor and discharge temperature thermistor)
CN643 (Ambient temperature thermistor)
CN644 (Outdoor heat exchanger temperature thermistor)
(3) Pull out the discharge temperature thermistor from its holder.
(4) Pull out the defrost thermistor from its holder.
(5) Pull out the outdoor heat exchanger temperature thermistor from its holder.
(6) Pull out the ambient temperature thermistor from its holder.

Removing outdoor fan motor
(1) Remove the top panel, cabinet and service panel. (Refer to 1.)
(2) Disconnect the following connectors:
<Inverter P.C. board>
CN931 and CN932 (Fan motor)
(3) Remove the propeller nut.
(4) Remove the propeller.
(5) Remove the screws fixing the fan motor.
(6) Remove the fan motor.

Removing the compressor and 4-way valve
(1) Remove the top panel, cabinet and service panel. (Refer to 1.)
(2) Remove the back panel. (Refer to 1.)
(3) Remove the inverter assembly. (Refer to 2.)
(4) Recover gas from the refrigerant circuit.
NOTE: Recover gas from the pipes until the pressure gauge shows 0 kg/cm2 (0 MPa).
(5) Detach the brazed part of the suction and the discharge pipe connected with compressor.
(6) Remove the compressor nuts.
(7) Remove the compressor.
(8) Detach the brazed part of 4-way valve and pipe.