Tuesday, March 31, 2015

PHILIPS 46PFL3705D SERVICE MODE AND POWER SUPPLY CIRCUIT

PHILIPS 46PFL3705D


 SERVICE MODE AND POWER SUPPLY CIRCUIT 

Service mode:
1. Turn the power on.
2. Press [MENU] button to display Setup menu.
3. Select “Features”.
4. Select “Current Software Info”.
5. Press [0], [6], [2], [5], [9], [6] 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
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 60 minutes.
2. Input the White Raster(70%=70IRE, 40%=40IRE).
3. Set the color analyzer at the CHROMA mode and zero point calibration. Bring the optical receptor pointing at the center of the LCD-Panel at a distance of 1.18 inches(3cm) away from the LCDPanel surface.
Note: The optical receptor must be set perpendicularly to the LCD Panel surface.
4. Enter the Service mode. Press [VOLUME DOWN] button on the remote control unit and select “C/D” mode.
5. [CUTOFF]
Press [1] button to select “COR” for Red Cutoff adjustment. Press [3] button to select “COB” for Blue Cutoff adjustment.
[DRIVE]
Press [4] button to select “DR” for Red Drive adjustment. Press [6] button to select “DB” for Blue Drive adjustment.
6. In each color mode, press [CHANNEL UP/DOWN] 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).
8. To cancel or to exit from the White Balance Adjustment, press [PREV CH] button.
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.
1. Turn the power on.
2. Enter the service mode.
- To cancel the service mode, press [POWER] button on the remote control unit.
3. Press [INFO] button on the remote control unit to initialize the LCD television.
4. "INITIALIZED" will appear in the upper right of the screen. "INITIALIZED" color will change to green from red when initializing is completed.
Firmware Update Procedure
Note:
There are two states (the User Upgrade and m,the Factory Upgrade) in firmware update.
The identification of User Upgrade and Factory Upgrade are done by the filename.
1. Turn the power off and unplug the AC Cord.
2. Insert the USB storage device to the USB port.
3. Plug the AC cord in the wall outlet and turn the power on.
4. The update will start and the following will appear on the screen.
5. When the firmware update is completed, the following will appear on the screen.
Remove the USB storage device from the USB port.
Turn the power off and turn the power on again.
Note:
When the Factory Upgrade is used, after restarting TV, shift to initial screen menu in service mode. "INITIALIZED" will appear on the upper right of the screen. "INITIALIZED" color will change to green from red when initializing is completed.
POWER SUPPLY CIRCUIT 
CLICK ON THE IMAGE TO ZOOM IN