KV-32XL90B - Sony TV Service Manual (repair manual). Page 22

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- 22 -
Sub Brightness Adjustment
1.
Input a Monoscope pattern.
2.
Program the Remote Commander for operation in Service Mode.
[ See Page 21 ].
3.
Press ‘AUX/VIDEO’ ‘AUX/VIDEO’ 13 on the Remote
Commander.
4.
Adjust the ‘Sub-Brightness’ data so that there is barely a
difference between the 0 IRE and 10 IRE signal levels.
1.
Input a video signal that contains a small 100% white area on a
black background.
2.
Connect an oscilloscope to Pin 10 of J7330 [C Board].
3.
Program the Remote Commander for operation in Service Mode.
[ See Page 21 ].
4.
Adjust the Sub-Contrast
[ Using ‘AUX/VIDEO’ ‘AUX/VIDEO’ ‘11’ ] to obtain a voltage
 of 114 +0/- 5V.
Sub Contrast Adjustment
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