Thursday, October 29, 2015

PHILIPS 32MF338B SERVICE MODE AND POWER SUPPLY CIRCUIT

PHILIPS 32MF338

SERVICE MODE AND POWER SUPPLY CIRCUIT 

How to make the Service remote control unit:
Cut “A” portion of the attached remote control

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 pressing [7] button on the service remote control unit, the display changes
VCOM Adjustment.
1. Operate the unit for more than 20 minutes.
2. Set the color analyzer and bring the optical receptor to the center on the LCD-Panel surface after zero point calibration as shown above.
Note: The optical receptor must be set perpendicularly to the LCD Panel surface.
3. Enter the Service mode.
4. Press [2] button on the service remote control unit.
5. Press [CH. + / - ] buttons on the service remote control unit so that the color analyzer value becomes minimum.
White Balance Adjustment
Purpose:
To mix red, green and blue beams correctly for pure white.
Symptom of Misadjustment: White becomes bluish or reddish.
1. Operate the unit for more than 20 minutes.
2. Input the White Raster(70%=70IRE, 25%=25IRE).
3. Set the color analyzer to the CHROMA mode and bring the optical receptor to the center on the LCD-Panel surface after zero point calibration.
Note: The optical receptor must be set perpendicularly to the LCD Panel surface.
4. Enter the Service mode. Press [VOL. - ] button on the service remote control unit and select “C/D” mode.
5. [CUTOFF]
Press [3] button to select “COB” for Blue Cutoff adjustment. Press [1] button to select “COR” for Red Cutoff adjustment.
[DRIVE]
Press [6] button to select “DB” for Blue Drive adjustment. Press [4] button to select “DR” for Red Drive adjustment.
6. In each color mode, press [CH. + / - ] buttons to adjust the values of color.
7. Adjust Cutoff and Drive so that the color temperature becomes 12000°K (x= 0.272 / y= 0.278 ±0.005).
Firmware Renewal Mode
Equipment Required
a. Serial 4pin Cable
b. RS232C Cable
c. "iDev .exe" file
d. "*** .ecc" file
1. Remove the Cover for Serial Connector on the rear cabinet.
2. Connect the Serial 4pin Cable to the Serial Connector, the Serial 4pin Cable to the RS232C Cable, and the RS232C Cable to the PC.
3. Plug in the AC Cord and turn LCD TV power on.
4. Execute the "iDev .exe" file.
5. Click "setup" menu.
5-1 Set Serial Port. Comform it to the PC’s SerialPort. (generally "COM1")
5-2 Set Baud Rate to "115200".
5-3 Select "*** .ecc" file for Image Path
5-4 Click "OK" and turn the LCD TV power off.
6. Click "down" and when "waiting for ping..." is displayed, turn the LCD TV power on.
7. Wait for updating. When "Finished, Please reset the HDTV" is displayed, unplug the AC Cord.
8. Updating is complete.
How to initialize the LCD TV
1. Turn the power on.
2. To enter the service mode, press the service button on the service remote control unit.
- To cancel the service mode, press [POWER] button on the remote control unit.
3. Press [INFO] button on the service remote control unit to initialize the LCD TV.
4. "INITIALIZED" will appear in the upper right of the screen. "INITIALIZED" color will change to green from red when initializing is complete.
POWER SUPPLY CIRCUIT 
CLICK ON THE IMAGE TO ZOOM IN