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SANYO DS-25204 (CANADA) - POWER SUPPLY [SMPS] - SCHEMATIC [CIRCUIT DIAGRAM]

November 29, 2013, 3:14 am
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SMPS SCHEMATIC
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POWER FAILURE DETECTOR
This unit is equipped with a power failure detector function included in the CPU which checks for an abnormal condition in the chassis power supplies, including the power supply derived from the horizontal output transformer.
If, while the power is on, a failure is caused by any of the following that results in a low voltage supply, the CPU will turn the unit off in 1.5 seconds to prevent unnecessary damage.
  1. Failure within the power supply circuits.
  2. A short circuit in the load side from the power supply
  3. Stoppage of the horizontal output oscillator caused by the X-Radiation protection hold-down circuit
If while the power is off, the power is switched on and any of these failures remains uncorrected, the CPU will shut off the power within 3 seconds.  Check the following of the unit is turned off by power failure indicator.
  • Disconnect the AC power cord [120VAC line] for at least 10 seconds.
  • Connect a DC voltmeter to the following Test Points.
  • Press the power key and check for the proper voltage supplies.
  • If any of these voltages is low, the power failure detector should turn the unit off within 3 seconds.
  • Check all the circuits listed above.
This unit is equipped with a power surge protection feature included in the CPU.  If power failure occurs three times within 15 minutes, the CPU will automatically stop functioning to help to prevent secondary damage.  TV will not turn ON by pressing the power key.  To reset the operating programs within the CPU, disconnect the AC power cord for at least 10 seconds.



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DS 25204 - SANYO (Canada) SERVICE MODE_EEPROM REPLACEMENT_ Initial DATA

November 29, 2013, 3:44 am
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SERVICE MODE & ADJUSTING METHODS 
TO ENTER SERVICE MODE: While pressing the Menu key on the front control panel of the TV, re-connect the AC power cord.  The service menu display will appear
Press UP/DN key to select the desired service menu item, and use (+) / (-) key, or, number keys to adjust the data.

To exit service mode, press Menu key.
IC802 [EEPROM] replacement.
When this IC is replaced, CPU will automatically write the initial reference data into newly replaced memory IC, for basic TV operations.  However, the bus data should be checked and some bus data should be set up before attempting the service adjustments.
INITIAL BUS DATA SETUP
BUS DATA
CLICK ON THE PICTURES TO MAGNIFY

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11AK19PRO - TV KIT - SMPS SCHEMATIC [CIRCUIT DIAGRAM] - MTP6N60E(FET) – MC44603 / 44604(CONTROL IC)

November 29, 2013, 10:33 am
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POWER SUPPLY SECTION CIRCUIT
CLICK ON THE SCHEMATIC TO ZOOM IN

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INFINITY - 7540A_7541A - (4-Channel) CAR AMP - CIRCUIT DIAGRAM (SCHEMATIC) _ WIRING DIAGRAM

November 29, 2013, 8:49 pm
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Output Power:    111W RMS x 4 channels @ 4 ohms; ≤1% THD + N
(14.4V supply)  139W RMS x 4 channels @ 2 ohms; ≤1% THD + N
                         278W RMS x 2 channels @ 4 ohms; ≤1% THD + N
WIRING
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POWER
AMPLIFIER
POWER CONNECTION
Connect a wire directly to the vehicle’s positive battery terminal, and install an appropriate fuse holder within 18" of the battery terminal. Do not install the fuse at this time. Route the wire to the amplifier’s location, and connect it to the amplifier’s positive (+12V) terminal. Be sure to use appropriate grommets whenever routing wires through the firewall or other sheet metal.  Failure to adequately protect the positive wire from potential damage may result in a vehicle fire. When you are done routing and connecting this wire to the battery and to the amplifier, you may install the fuse at the battery. The fuse value should be selected based on total
amplifier-current draw; see chart at right.
GROUND CONNECTION
Connect the amplifier’s Ground (GND) terminal to a solid point on the vehicle’s metal chassis, as close to the amplifier as possible.
Speaker connections should be made using a minimum of 16-gauge wire.
HIGH-LEVEL INPUT CONNECTIONS
The 7540a/7541a amplifiers are equipped with speaker-level inputs that allow you to add an amplifier to head units that do not have RCA line outputs. The speaker outputs for the source unit should be connected to the amplifier using the supplied connector (square four-wire plug). Remember to check for proper polarity.
When using the low-level or high-level inputs, the AUX outputs can be used to pass a full-range line-level signal to another amplifier.
The 7540a/7541a can be set up for stereo 4-channel, 3-channel or bridged 2-channel operation, as shown in Figures 7 through 9.
NOTE: For simplicity, Figures 7 through 9 do not show power, remote and input connections.
NOTE: Minimum speaker impedance for stereo operation is 2 ohms. Minimum speaker impedance for bridged operation is 4 ohms.

NOTE: "Bass Boost” only affects rear channels.

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SONY KDL32BX300 _ KDL22BX300 - LCD TV - SMPS [POWER SUPPLY] - SCHEMATIC (CIRCUIT DIAGRAM)

November 30, 2013, 12:29 am
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SMPS SCHEMATIC
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JAMO SW400E SUB-WOOFER - SCHEMATIC [CIRCUIT DIAGRAM]

November 30, 2013, 12:47 am
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SCHEMATIC - CLICK ON THE SCHEMATIC TO ZOOM IN


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JAMO - SW-600E - SUB-WOOFER - SCHEMATIC [CIRCUIT DIAGRAM]

November 30, 2013, 1:04 am
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POWER AMP SCHEMATIC
Speaker Level _ Line Level
CLICK ON THE SCHEMATICS TO ZOOM IN

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SANYO VIZON - DP-42545 _ TROUBLESHOOTING CHART - SERVICE MODE - LED BLINKS

November 30, 2013, 5:08 am
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TROUBLESHOOTING
NO POWER
NO AUDIO
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NO VIDEO
SERVICE MODE
  • While pressing the Volume (-) button on the TV, press the Number Key (1)on the remote control unit. The service menu screen shown as below will be displayed.
  • Press Menu UP/DN key to select the desired service menu.
  • Press channel Up/Dn key to skip up or down 10 items.
  • Use MenuRight/Left key to adjust the data.
  • Press Menu key to Exit service mode.
POWER FAILURE CIRCUIT
Power failure 1: (Normal: High, Failure: Low).  Detected voltage failure for analog circuit [Connected to IC801 pin 52]
Power failure 2: (Normal: Low, Failure: High). Detected voltage failure for audio AMPP IC. [Connected to IC801 pin 53]
Power failure 3: (Normal: High, Failure: Low). Detected voltage failure for digital circuit. [Connected to IC801 pin 54]

Temperature Failure : (Normal: Low, Failure: High)  Detected temperature failure for Main Power Unit  [Connected to IC801 pin 57]
LED Flashing
When IC801 detects the Power Failure the LED will flash to indicate a power failure has occurred.  The type of failure detected as shown below will determine the number of flashes.  If power failure is detected 3 times, the set will enter the standby mode, and cannot be switched ON.  To reset the operating programs of the CPU, it is necessary to disconnect the AC cord for a short time.  When finishing the repair or stopping the Power Failure, the history of past failures can be checked.
TO SEE THE HISTORY
Enter service mode.
Select item number [355] POWER ERROR from the service adjustment data table.
If simultaneous failures have been detected, the sum of each data is displayed.  For example:
Power failures 1&2
01h + 10h = 11h (17)

After finishing service, reset the data of item No>355 with the < or > keys to ‘00h(0).

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EPSON - EPSON Stylus Photo R280/R285/R290 _ TROUBLESHOOTING CHART

November 30, 2013, 7:46 pm
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ERROR MESSAGES
COMMUNICATION ERROR
CLICK ON THE CHARTS TO MAGNIFY

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JBL BALBOASUB-10 - SCHEMATIC [Circuit Diagram] & TROUBLESHOOTING CHART

November 30, 2013, 10:22 pm
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TROUBLESHOOTING CHART
SCHEMATICS
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SPECIFICATIONS
Amplifier Power (RMS): 100 Watts
Peak Dynamic Power: 225 Watts
Driver: 10" (254mm)
Inputs:  Line Level and LFE
Crossover Frequency: Variable from 50Hz to 150Hz, 24 dB per octave
Frequency Response: 30Hz – 150Hz Dimensions (H x W x D): 19-3/4" x 14-1/16" x 14-3/4"
(502mm x 357mm x 375mm)
Weight: 35 lb/16kg

The Peak Dynamic Power is measured by recording the highest center-to-peak voltage measured across the output of a resistive load equal to minimum impedance of the transducer, using a 50Hz sine wave burst, 3 cycles on, 17 cycles off.

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YAMAHA - YST-SW800 - SUBWOOFER - AMP - SCHEMATIC (Circuit Diagram)

December 1, 2013, 1:00 am
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SCHEMATIC [POWER AMP]
Q23 à 2SJ406
Q24 à 2SK2378
Q25 à 2SJ406
Q26 à 2SG4449 E,F
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As a high voltage is applied to the SW power supply section and the power amplifier, be careful not to recieve an electric shock.
To stabilize operation of the amplifier, turn ON the power with No Input signal and wait for 1 to 2 minutes in non-loaded condition before the adjustment.  Adjust VR1, so that the voltage between the terminals TP1 & TP2 is DV 50mv to 250mv.

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MARANTZ - SA7001 - SCHEMATIC - (Circuit Diagram) - SUPER AUDIO CD PLAYER

December 1, 2013, 3:45 am
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SCHEMATIC
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DAC [ONLY]

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MICROLAB HTS - A6660 – A6661 – A6662 – A6663 – A6664 - (TDA8947J – TDA7448 – PT2323 – 4558) SCHEMATIC

December 1, 2013, 9:59 am
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SCHEMATIC
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SAMSUNG MX-C630D/XER_ POWER SUPPLY - AMP - SCHEMATIC - 5-Disc Changer MINI-Compact System

December 1, 2013, 8:28 pm
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SCHEMATIC
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CONNECTOR VOLTAGES
SMPS PWB - BOTTOM

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HOW TO SET BUYER REGION CODE - SAMSUNG MX-C630D XER - 5-Disc Changer MINI-Compact System

December 1, 2013, 9:55 pm
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REGION CODE SETUP
The inserting method of Region  Code after replacing the Main PBA
When replacing the Main PBA and System Micom should be inserted the region code.
The set is not working properly if you don't insert the region code.
The region code is inserted by the remote control.
  1. Press the “AUX” button on the remote control
  2. Press the “ANGLE” button on the remote control during 4~5 seconds.
  3. After step (2), you can see “TEST − −” on the VFD. Insert number “33”, “33” to select Region Code.
  4. After step (3), you can see “− −” on the VFD.  Insert the Region Code corresponding model with  “0 ~ 9” buttons on the remote control. 
  5. Turn the Power off.
REGION CODE OPTIONS
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HOW TO DISASSEMBLE CD DECK MECHANISM - SAMSUNG MX C630D XER

December 1, 2013, 11:11 pm
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Unfasten the screw and Separate the cable, push and slip the Cover-Top.
Be careful the hook and eye.
Be careful the Spring-stopper To keeps from happening curve.
Be careful the hook and eye.
Push the white switch and pull the 5 tray out.
Turn the white wheel with counter-clockwise to end at first, and then turn the lever-link.
If you can’t turn the lever-link, check the wheel.
Push the hook, let the lever-link turn to right again.
Pull the Holder-Traverse, take it out.
Take the shaft out and well-kept.
Unfasten the 4 screws, separate the cable.
CLICK ON THE PICTURES TO ZOOM IN

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EPSON R290 – R285 – R280 – STYLUS PHOTO - TROUBLESHOOTING - PRINTER

December 2, 2013, 9:30 am
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FATAL ERROR
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Troubleshooting for Ink Cartridge Detection Error/ Ink Cover Open Error/ Cartridge Empty Error
Paper Jam error
No paper error

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MX C630D_XER SAMSUNG _ 5-Disc Changer MINI-Compact System Troubleshooting

December 2, 2013, 10:13 am
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TROUBLESHOOTING [NO POWER]
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NO OUTPUT
SMPS Check Flow-SMPS Protection
Cases of the SMPS Protection.
If there is over current at the AMP IC (Speaker Wire Short)
If temperature of the AMP IC is over 150°C.
There is no power supply for AMP.
AMP Pre-Inspection relating to Power Protection
If you think, there are problems at the AMP PART, you can check the PCB without disassemble the set.  (Caution: Do not connect the power cord during bellow check)
If Measured Resistance is very different from above numbers. There is a Problem. à AMP PART Problem.
Micom Reset
During STANDBY mode, push the “STOP” button 5 Second. If VFD blinking, reset is finished.
Micom Update (Only for Flash Micom)
Method 1) MAIN PCB UTCN1 for update JIG. To update Micom, it need Computer, Rom Writer, USB Cables.
Method 2) Insert USB Memory, and play. “Update” will be displayed. Set will be power off when finish.
Micom & MPEG Version Check
Power On.
In VSB Function. “NO USB” status.
Push the number NEXT for 5 seconds, check the Micom version.
Push the number PREVIOUS for 5 seconds, check the MPEG version.
MPEG  Update Method
Prepare Rom file at USB Memory.
Insert USB Memory, and play. “Update” will be displayed and listen. Set will be power off à on.
The disc is automatically ejected. (If you use USB memory, detach USB memory.)
MPEG Reset
During “No Disc” displayed, push the stop button 5 seconds. After displayed “INITIALIZE” set will power off automatically.

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ACER AL1912 - MONITOR - SMPS [Power Supply] - SCHEMATIC [Circuit Diagram]

December 3, 2013, 1:20 am
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SCHEMATIC
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HOW TO DISASSEMBLE_ACER AL1912 _ MONITOR _ TROUBLESHOOTING

December 3, 2013, 2:04 am
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DISASSEMBLE PROCEDURE
Disassemble the base 
Remove the neck cover.
Remove the four screws to release the hinge.

Remove the base.
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Disassemble the chassis
Remove the four screws to release the back cover.
Remove the two screws to release the EMI cover from chassis.
Remove the two screws from VGA connector.
Then take the chassis.
Remove the two screws from bezel.
To separate the chassis and bezel.
Remove the four screws from chassis and release the panel.
Disassemble the main board
Disassemble audio line from power board.
Disassemble two VL-VK lines from VL board.
Disassemble power line from VL board.
Disassemble FPC line from VL board.
Remove the one screw to release line from Chassis. 
Remove the three screws from Chassis and release the main board.
Disassemble the power board
Disassemble two voltage lines from power board.
Remove the one screw to release line from Chassis.
Remove the three screws from Chassis.
Remove the two screws to release power board from Chassis.
Then take the power board from the chassis.
Disassemble the speakers
Remove the two screws to release line and VK board from bezel.
Remove the two screws to release line and chassis from bezel.
Remove the four screws from bezel.
TROUBLESHOOTING TABLE
Power Circuit and Back-lights Troubleshooting
Performance Troubleshooting
Function Troubleshooting

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