Haier TV-8888-09, Service Manual

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AGC ALIGNMENT:
Receive a color bar signal, 60dB, NTSC M color bar pattern, and check if there is
noise in the picture, if there is some noise, press FACTORY button and enter service
mode, adjust RF.AGC value and make the noise just disappear, press FACTORY
button and exit service mode.
White balance adjustment:
Turn TV on, receive white field signal, and ensure the probe of white balance
adjustment instrument touches the top and bottom of the screen fully.
Check if values of R, G, B are standard, if not, press “FACTORY” button, make “B/W
BALANCE” menu display on screen, adjust values of R-BIA, G-BIA, B-IA, R-DRV, G-
DRV, B-DRV, make them standard.
Press FACTORY button, to exit service mode.
OSD
I2C bus control
(LA76810)
Varied range
S-BRI Sub brightness 0-127
R-BIA Red bias 0-255
G-BIA Green bias 0-255
B-BIA Blue bias 0-255
R-DRV Red drive 0-127
G-DRV Green drive 0-15
B-DRV Blue drive 0-127
W C 0-3
FOCUS ALIGNMENT
Receive crosshatch (N system) pattern. Adjust the focus-variable resistor on the FBT
and ensure the picture is sharp.
GEOMETRIC ALIGNMENT:
Receive the monochrome circle pattern (NTSC system);
Check vertical center and horizontal center and H-linearity.
If they are not standard, press FACTORY button to enter service mode, and adjust
vertical size, vertical linearity, vertical center, horizontal center, ensure they are
standard.
Alignment parameter table :
Press FACTORY button on service remote controller and enter service mode:
1. Adjustment mode
2. Setting mode;
Use CH+ or CH- button up/down pages to select items that you need adjust; use
VOL+ or VOL- button to adjust their values.