Sony XTL-750W Service Manual page 8

QQ
3 7 63 1515 0
γ 0 Adjustment
Procedure:
1. Display the gray scale on the monitor screen.
2. Connect an oscilloscope to TP106 on the MONITOR MAIN
board.
3. Adjust RV212 so that the white level of the waveform is at
4.6 ± 0.05V DC.
Adjustment Location: Monitor Main Board
R and B Level Adjustment
Procedure:
1. Display the gray scale on the monitor screen.
2. Connect an oscilloscope to TP107 on the MONITOR MAIN
board.
3. Adjust RV207 so that the white level of the waveform is at
4.6 ± 0.05V DC.
4. Connect an oscilloscope to TP108 on the MONITOR MAIN
board.
5. Adjust RV209 so that the white level of the waveform is at
4.4 ± 0.05V DC.
Adjustment Location: Monitor Main Board
Adjustment Location:
TE
L 13942296513
MONITOR MAIN BOARD ( SIDE B )
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MONITOR MAIN BOARD ( SIDE A )
VCOM
RV211 RV210
RV401
RV209 RV207
DC/DC
CONVERTER
R AND B LEVEL
VOLTAGE
TP70
TP67
TP63
x ao
y
i
TP64
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VCOM Adjustment (2)
Procedure:
1. Display the navigation map screen on the monitor screen.
2. Adjust RV211 so as to ensure that the screen has the highest
contrast with no flicker.
Adjustment Location: Monitor Main Board
γ 2
RV213
γ 0
Q Q
RV212
3 6 7 1 3
RV208
RV201
RGB
BRIGHT
AMPLITUDE
TP107
TP108
TP106
TP102
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TP57
.
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
RV601
INVERTER
VOLTAGE
m
TP14
co
9 9
2 8 9 9