White Balance Adjustment - Haier HTX29S31S Service Manual

Main power adjustment:
Adjustment: Connect voltage meter to +B on main PCB, make +B voltage be 148V±0.3V.
6 F U H H Q Y R O W D J H D G M X V W P H Q W 6 F U H H Q Y R O W D J H D G M X V W P H Q W 6 F U H H Q Y R O W D J H D G M X V W P H Q W 6 F U H H Q Y R O W D J H D G M X V W P H Q W
" ) $ & 7 2 5 < " E X W W R Q R Q W K H V H U Y L F H U H P R W H
W K H V F U H H Q W K H Q S U H V V " 0 8 7 ( " E X W W R Q
$ G M X V W 6 F U H H Q Y R O W D J H R I ) % 7
P R G H 3 U H V V " 3 6 7 ' " E X W W R Q D Q G P D N H S L F W X U H H Q W H U V W D Q G D U G P R G H
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
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 make the probe of white balance adjustment instrument touch with
top and bottom of 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, exit service mode.
OSD I2C bus control (LA76810)
S-BRI Sub brightness
R-BIA Red bias
G-BIA Green bias
B-BIA Blue bias
R-DRV Red drive
G-DRV Green drive
B-DRV Blue drive
C.B/W Cross B/W
FOCUS ALIGNMENT
Receive crosshatch (N system) pattern; Adjust focus-variable resistor on the FBT, make picture is the
sharpest.
Adjustment
F R Q W U R O O H U W Z L F H " % : E D O D Q F H G L V S O D \ R Q
D Q G P D N H D K R U L ] R Q W D O E U L J K W O L Q H G L V S O D \ R Q W K H V F U H H Q
P D N H W K H O L Q H M X V W V H H Q " 0 8 7 ( " E X W W R Q D Q G H [ L W V H U Y L F H
Varied range
0-127
0-255
0-255
0-255
0-127
0-15
0-127
0-3
25
7 K H Q S U H V V