Sharp AQUOS LC-15S5U, Service Manual

Page: 13 / 92

13
LC-15AV6U
3-2. ADC target level adjustment
* Using the UP/DOWN keys, enter RGTAR, GGTAR, BGTAR of Service Menu Page 7
* Press CH12 of remote control, enter adjustment situation "A3 A3 A3"
* Using the LEFT/RIGHT keys, make the first A3 correspond to RGTAR, the second A3 correspond GGTAR, and
the third A3 correspond BGTAR
* It is not adjusted usually.
[4] Initialization
4-1. Ground pins (81) and (82) of IC2001 (microprocessor) and turn on the power.
4-2. Make sure the screen size is set at 20 inches.
4-3. Make sure the model number is A635A.
(Adjustment Process Menu Page 1)
[5]
5-1. Model-by-model sending data
Separately published.
5-2. ROM collection
Separately published.
[6] Adjustment
6-1. Common bias adjustment
1) Feed a built-in signal.
2) Apply the specified instrument at the center of the screen.
3) Observe the instrument output on an oscilloscope.
4) Adjust the "COM BIAS" setting on Adjustment Process Page 2 so that the peak-to-peak of the wave be
minimized.
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
1
M O D E L 3 6 5
5
A
O F
A
0
F
I N C H S I Z E
E R R O R N O R E S E T
P U B L I C M O D E
0
1
2
3
4
O F
F
1
1
V
–
C H I P
E X T
V E R R O M 1 . 0 0 A G A I B U 0 . 0 0 0
C O N T R O L
5
6