Funai 22″ COLOR LCD TELEVISION LH7-M22BB
This is for the LH7-M22BB (A9372EP) model.
For the LH7-M22BB (A9372EP)
model, the letter (A9372EP) is printed on the Serial Number Label on the back
of the unit. Refer to the Serial Number.
Electrical adjustments
Electrical adjustments are required after replacing circuit components and certain mechanical parts. It is important to perform these adjustments only after all repairs and replacements have been completed. Also, do not attempt these adjustments unless the proper equipment is available.
Service mode
To enter into the service mode, you have to make a service remote control, out of supplied remote control.
How to make the Service remote control unit.
Cut “A” portion of the attached remote control unit as shown in Fig.
How to set up the service mode.
Use the service remote
control unit.
2. Turn the power on.
3. Press the service button on the service remote control unit as shown.
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 as follows.
“When entering this mode, the default setting is White mode”
VCOM Adjustment
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 [3] button on the service remote control unit.
5. Press [P- UP / DN ] buttons on the service remote control unit so that the
color analyzer value becomes minimum.
Auto Calibration [Component]
Purpose: To bring the
color adjustment of each component into standard alignment.
Symptom of Maladjustment: 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.
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.
The following adjustment normally are not attempted in the field. Only when replacing the LCD Panel then adjust as a preparation.
White Balance Adjustment [Video/Component/PC]
Purpose: To mix red, green and blue
beams correctly for pure white.
Symptom of Maladjustment: White becomes
bluish or reddish.
1. Operate the unit for more
than 20 minutes.
2. [VIDEO input]
Input the White Raster (70%=70IRE, 40%=40IRE).
[Component input]
Input the 720P White Raster (70%=70IRE, 40%=40IRE).
[PC input]
Input the SVGA White Raster (70%=70IRE, 40%=40IRE).
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 below.
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 [P-UP / DN ] 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.
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 [ i ] 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.
Schematic diagrams
