Thursday, September 17, 2015

FUNAI LH8-M40BB - LT8-M40BB SERVICE MODE AND SMPS POWER SUPPLY CIRCUIT

FUNAI LH8-M40BB - LT8-M40BB 

SERVICE MODE AND SMPS POWER SUPPLY CIRCUIT 

How to make the Service remote control unit
Cut “A” portion of the attached remote control unit as shown in Fig. 1.

How to set up the service mode
Service mode:
1. Use the service remote control unit.
2. Turn the power on.
3. Press the service button on the service remote control unit as shown in Fig.1.
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
Auto Calibration [Component]
Purpose:
To bring the color adjustment of each component into standard alignment.
Symptom of Misadjustment: If this adjustment is incorrect, component signals do not reproduce the corresponding color.
1. Input 720P 100% Color Bar signal.
2. Enter the service mode.
3. To enter the Auto Calibration adjustment mode, press [6] button on the service remote control unit.
4. To start auto adjustment, press [P UP] button on the service remote control unit.
- In the auto adjustment mode, “Calibration Check” appears on the screen.
- Upon completion, “OK” appears on the screen.
5. To cancel or to exit from the Auto Calibration [Component], press [BACK] button.
Auto Calibration [PC]
Purpose:
To bring the color adjustment of PC into standard alignment.
Symptom of Misadjustment: If this adjustment is incorrect, PC signals do not reproduce the corresponding color.
1. Input SVGA 100% White signal.
2. Enter the service mode.
3. To enter the Auto Calibration adjustment mode, press [5] button on the service remote control unit.
4. To start auto adjustment, press [P UP ] button on the service remote control unit.
- In the auto adjustment mode, “Calibration Check” appears on the screen.
- Upon completion, “OK” appears on the screen.
5. To cancel or to exit from the Auto Calibration [PC], press [BACK] button.
White Balance Adjustment
[Video/Component/PC]
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. [VIDEO input]
Input the White Raster (70%=70IRE, 30%=30IRE).
[Component input]
Input the 720P White Raster (70%=70IRE, 30%=30IRE).
[PC input]
Input the SVGA White Raster (70%=70IRE, 30%=30IRE)
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 as shown above.
Note: The optical receptor must be set perpendicularly to the LCD Panel surface.
4. Enter the Service mode. Press [V -] 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 [P UP / DOWN  ] buttons to adjust the values of color.
7. Adjust Cutoff and Drive so that the color temperature becomes 9200°K (x= 0.286 / y= 0.295 ±0.005).
8. Change the video signal input in step 2 and repeat from step 3.
9. To cancel or to exit from the White Balance Adjustment, press [BACK] button.
INITIALIZE THE LCD TELEVISION
How to initialize the LCD television:
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 [ ] button on the service 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 complete.
SMPS POWER SUPPLY CIRCUIT 

INVERTER POWER 

MAIN POWER