Sharp LC-30HV4M Service Manual page 24

LC-30HV4M
LC-30HV4H
(5) N358 signal adjustment
Adjustment items
1 Setup
2 MAIN N358 Y
CONTRAST
adjustment
3 MAIN N358 COLOR
GAIN adjustment
4 MAIN N358 Cr GAIN
adjustment
5 MAIN N358 TINT
adjustment
(6) Component 15k Hz signal adjustment
Adjustment items
1 Setup
2 MAIN COMP 15k Y
CONTRAST
adjustment
3 MAIN COMP 15k
COLOR GAIN
adjustment
4 MAIN COMP 15k Cr
GAIN adjustment
Adjustment conditions
INPUT1-Video
Pin (1) of P801
Pin (3) of P801
Pin (5) of P801
TB1274_MAIN Output (TP802)
Adjustment conditions
INPUT1_COMPONENT
Pin (1) of P801
Pin (3) of P801
Pin (5) of P801
24
Adjustment procedures
1. Set colour system to N358.
2. Select N358 source.
100% colour bar signal including 100% white, such
as split fied colour bar.
Adjust "MAIN N358 Y CONTRAST" at 100% white
section to 0.70 ±0.025 Vp-p at pin (1) of P801.
Adjust "MAIN N358 COLOR
GAIN" to 0.70 ±0.025 Vp-p at
pin (3) of P801.
Adjust "MAIN N358 Cr GAIN"
to 0.70 ±0.025 Vp-p at pin (5)
of P801.
Adjust "MAIN N358 TINT" at TB1274_MAIN output
(TP802) so that waveform becomes as illustrated
below:
Adjustment procedures
1. Select component 15k Hz.
2. Select component source.
100% colour bar signal including 100% white, such
as split field colour bar.
Adjust "COMP 15k Y CONTRAST" to 0.70±0.025 Vp-p
at pin (1) of P801.
Adjust "COMP 15k COLOR
GAIN" to 0.70 ±0.025 Vp-p at
pin (3) of P801.
Adjust "COMP 15k Cr GAIN" to
0.70 ±0.025 Vp-p at pin (5) of
P801.
0.70V
0.70V
Smoothed
0.70V
0.70V