Monday, November 16, 2015

SYLVANIA 6842PE M SERVICE MODE AND POWER SUPPLY CIRCUIT

SYLVANIA BLU RAY

SYLVANIA 6842PE M 

SERVICE MODE AND POWER SUPPLY CIRCUIT 

How to make service remote control
1. Prepare normal remote control unit. (Part No. N0121UD or N0134UD) Remove 3 Screws from the back lid.
2. Add J1 (Jumper Wire) to the remote control CBA.
Pic 1
HOW TO ENTER TO SERVICE MODES
Service mode
1. To turn the power on, press "POWER" button on the normal remote control unit or the unit.
2. Use the service remote control unit.
3. Press "SLEEP" button on the service remote control unit
4. Confirm the following
a. Version of main micro computer --- K798-016
b. Memory size --- 4
c. FLASH DATA Chek Sum (press "0" button on the service remote control unit) --- C97A
HOW TO INITIALIZE SETTINGS 
1. To turn the power on, press "POWER" button on the normal remote control unit or the unit.
2. Enter the service mode.
3. To reset to factory setting, press "DISPLAY" button on the normal remote control unit.
- "INITIALIZE" (red) appears on the screen
After few seconds (completion initialization), color of "INITIALIZE" will change green.
V-data Adjustment
1. Operate the unit more than 20 minutes.
2. Input an APL 100% white VIDEO signal.
3. Adjust VR2350 so that the voltage of J2198 becomes 67±0.5 V
V-sus Adjustment
1. Operate the unit more than 20 minutes.
2. Input an APL 100% white VIDEO signal.
3. Adjust VR2250 so that the voltage of J2164 becomes the specified voltage as shown on the panel label locating on the up-right of the back on the PDP Panel.
White Balance Adjustment
Purpose:
To mix red, green and blue beams correctly for pure white.
Symptom of Misadjustment: White becomes bluish or reddish.
Notes:
To only enter the service mode, use service remote control unit.
This adjustment should be performed in Video 1 mode.
1. Operate the unit more than 20 minutes.
2. Input the gray scale pattern signal (5 scales) from Composite AV Input (1) video jack (Video1).
3. Set the color analyzer to the CHROMA mode and after zero point calibration, for high light adjustment, bring the optical receptor to the 2nd scale
4. Enter the Service mode.
5. Enter the component adjustment mode, press
"VOL DOWN " button once on the normal remote control unit
6. Press "4" button on the normal remote control unit for Red adjustment. Press "6" button on the normal remote control unit for Blue adjustment.
7. In each color mode, press "CH UP / DOWN" button to adjust the values of color.
8. Adjust Red and Blue color so that the temperature becomes 9200°K-5MPCD (x: 288 / y: 288) ±3%.
9. For low light adjustment, bring the optical receptor to the 4th scale
10. Press "1" button on the normal remote control unit for Red adjustment. Press "3" button on the normal remote control unit for Blue adjustment.
11. In each color mode, press "CH UP / DOWN" button to adjust the values of color.
12. Adjust Red and Blue color so that the temperature becomes 9200°K-5MPCD (x: 288 / y: 288) ±3%.
13. Check adjustment value in high light adjustment again. If adjustment value is not within specification, repeat steps 2-8.
14. To enter the adjustment mode in the Composite mode (Video 1 mode), press "VOL DOWN" button once on the normal remote control unit.
INITIALIZE THE PLASMA DISPLAY
To put the program back at the factory-default, initialize the Plasma Display as the following procedure.
1. To turn the power on, press "POWER" button on the normal remote control unit or the unit.
2. Use the service remote control unit.
3. To enter the service mode, press "SLEEP" button on the service remote control unit.
4. To reset to factory setting, press "DISPLAY" button on the normal remote control unit.
- "INITIALIZE" (red) appears
POWER SUPPLY CIRCUIT 
MAIN POWER 

STANDBY  POWER SUPPLY 
CLICK ON THE IMAGES TO ZOOM IN