Sharp LC-30HV4M Service Manual page 23

Lcd colour television
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(3) PAL signal adjustment
Adjustment items
1
Setup
2
MAIN PAL Y
CONTRAST
adjustment
3
MAIN PAL COLOR
GAIN adjustment
4
MAIN PAL Cr GAIN
adjustment
5
MAIN CONTRAST
adjustment
6
SUB PAL Y
CONTRAST
adjustment
7
SUB PAL COLOR
GAIN adjustment
(4) SECAM signal adjustment
Adjustment items
1
Setup
2
MAIN SECAM Y
CONTRAST
adjustment
3
MAIN SECAM COLOR
GAIN adjustment
4
MAIN SECAM Cr
GAIN adjustment
Adjustment conditions
INPUT1-Video
Pin (1) of P801
Pin (3) of P801
Pin (5) of P801
IC810 output (TP815)
Press the DUAL screen button.
TB1274_SUB Output (TP806)
TB1274_SUB Output (TP805)
Adjustment conditions
INPUT1-Video
Pin (1) of P801
Pin (3) of P801
Pin (5) of P801
23
Adjustment procedures
1. Set colour system to PAL.
2. Select PAL source.
100% colour bar signal including 100% white, such
as split field colour bar.
Adjust pin (1) of P801 to 0.70 ±0.025 Vp-p.
Adjust pin (3) of P801 to
0.70 ±0.025 Vp-p.
Adjust pin (5) of P801 to
0.70 ±0.025 Vp-p.
Adjust the output (TP815) of IC810 to have 0.90±0.025
Vp-p from the pedestal level.
Select the special DUAL screen settings for adjustment
(so that the same video source is reflected on MAIN/
SUB).
Adjust TB1274_SUB output (TP806) to
1.5 ±0.05 Vp-p.
Adjust TB1274_SUB output (TP805) to
1.5 ±0.05 Vp-p.
Adjustment procedures
1. Set colour system to SECAM.
2. Select SECAM source.
100% colour bar signal including 100% white, such
as split field colour bar.
Adjust the "MAIN SECAM Y CONTRAST" setting so
that the 100% white level at Pin (1) of P801 should be
0.7±0.025 Vp-p.
Adjust "MAIN SECAM
COLOR GAIN" to 0.7 ±0.025
Vp-p at pin (3) of P801.
Adjust "GAIN MAIN SECOM
Cr " to 0.7 ±0.025 Vp-p at pin
(5) of P801.
LC-30HV4M
LC-30HV4H
0.70V
0.70V
0.7V
0.7V

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