Sharp Aquos LC-13S1M, Service Manual

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14
LC-13S1M
LC-15S1M
5. Adjustment
5-1. +B adjustment (R3710 Variable resistor)
1) Receive the colour bar signal.
2) Adjust the voltage at pin (4) of P3701 to 5.00 ± 0.02 V.
Note: The 5.0 V level is used as reference for all the line voltages. Make this adjustment as precisely as
possible.
5-2. Counter bias adjustment: COM BIAS on page 2
Adjust the "COM BIAS" setting until the contrast gets optimum (the black portion blackest). The adjustment
guideline is around 120.
5-3. TAMP adjustment
1) Feed the colour bar pattern signal.
2) See if the "Y" reading on adjustment process page 2 is within the range shown below. If not, adjust the
"NTSC TAMP" setting to bring the "Y" reading within the specified range.
3) If the "NTSC TAMP" setting has been readjusted, write down its new setting in the "PAL TAMP" and
"SECAM TAMP" items manually.
Model LC13/15S1M
Adjustment value 191~201
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
2
C O M B I A S
2 0
T A M P L 9 1
1
1
Y D T A
H
9 1 8
T A M P
A
0 2 1
N T S C T A M P
T A M P
2 4
P A L T A M P 2 4
S E C A M
2
4
0
1
2
3
4
5
6
7
Y Data
(White 75%)
(Page 2 of adjustment process OSD)
5-4. White balance adjustment
1) Feed the monoscope pattern signal.
2) Adjust the "RCUTOFF", "BCUTOFF", "R-GAIN" and "B-GAIN" settings on adjustment process page 3 to
achieve the color at the same level as with the standard set.