Wednesday, September 23, 2015

FUNAI LC5-D20BB SERVICE MODE AND BACK LIGHT INVERTER CIRCUIT

FUNAI LC5-D20BB 

SERVICE MODE AND BACK LIGHT INVERTER CIRCUIT 

How to Set up the Service mode:
1. Turn the power on. (Use main power on the TV unit.)
2. Press [STANDBY-ON], [2], [7], [1], and [ ] buttons on the remote control unit in that order within 5 seconds.
- To cancel the service mode, press [STANDBY-ON] button on the remote control.
Flicker Adjustment
1. Enter the Service mode.
2. Press [2] button on the remote control unit.

3. If Flicker Adjustment is not fit, the screen becomes the following.

4. Press [P UP / DOWN ] buttons on the remote control unit so that flash stops.
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 Purity.
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. [RF/AV2(CVBS)]
Enter the Service mode. Press [ VOLUME - ] button on the remote control unit and select “C/D/S-1” mode.
[AV1(RGB)]
Enter the Service mode. Press [ VOLUME - ] button on the remote control unit and select “C/D/S-2” mode.
5. [RF/AV2(CVBS)]----(APL 80%)
Press [6] button to select “DB(C/D/S-1)” for Blue adjustment. Press [4] button to select “DR(C/D/S- 1)” for Red adjustment. When “x” value and “y” value are not within specification, adjust “DB (C/D/ S-1)” or “DR (C/D/S-1)”. Refer to “1. Initial Setting.”
[RF/AV2(CVBS)]----(APL 20%)
Press [3] button to select “COB(C/D/S-1)” for Blue adjustment. Press [1] button to select “COR(C/D/ S-1)” for Red adjustment. When “x” value and “y” value are not within specification, adjust “COB (C/ D/S-1)” or “COR (C/D/S-1)”. Refer to “1. Initial Setting.”
6. [AV1(RGB)]----(APL 80%)
Press [6] button to select “C-DB(C/D/S-2)” for Blue adjustment. Press [4] button to select “C-DR(C/D/ S-2)” for Red adjustment.When “x” value and “y” value are not within specification, adjust “C-DB(C/ D/S-2)” or “C-DR(C/D/S-2)”. Refer to “1. Initial Setting.”
[AV1(RGB)]----(APL 20%)
Press [3] button to select “C-COB(C/D/S-2)” for Blue adjustment. Press [1] button to select “CCOR(C/D/S-2)” for Red adjustment.When “x” value and “y” value are not within specification, adjust “C-COB(C/D/S-2)” or “C-COR(C/D/S-2)”. Refer to “1. Initial Setting.”
7. Turn the power off and on again.
Sub-Brightness Adjustment
Purpose: To get proper brightness.
Symptom of Misadjustment: If Sub-Brightness is incorrect, proper brightness cannot be obtained by adjusting the Brightness Control
1. Enter the Service mode. Then input signal.
2. [RF/AV2(CVBS)]
Press [SETUP] button on the remote control unit and press [1] on the service remote control (selecting “BRT” mode).
[AV1(RGB)]
Press [SETUP] button on the service remote control unit and press [3] on the service remote control (selecting “C-BRT” mode).
3. Make sure that contrast and brightness controls are set to initial position.
4. Confirm “C” position was beginning to bright.
5. If “C” position was beginning to bright, no need to adjust.
6. If “C” position is not available or to be highly brightness, then adjust IIC-BUS dada.
[RF/AV2(CVBS)]: BRT
[AV1(RGB)]: C-BRT
7. Turn the power off and on again.
INITIALIZING THE TV
1. Turn the power on.
2. To enter the service mode, press [STANDBY-ON],
[2], [7], [1], and [ MUTE ] buttons on the remote control unit in that order within 5 seconds.
- To cancel the service mode, press [STANDBYON] button on the remote control.
3. Press [DISPLAY] button on the remote control unit to initialize the LCD television.
4. Confirm "FF" indication on the upper right of the screen.
BACK LIGHT INVERTER 
CLICK ON THE IMAGE TO ZOOM IN