Sony UP895 Service Manual - Page 24
Brightness and Contrast Adjustment, TP6 AD IN/MA-99 B-3 Output waveform
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3-3. Brightness and Contrast Adjustment Machine condition for adjustment Specification . Input signal: 10 steps signal . In case, monitor is not connected, set DIP switch != on the rear panel to ON, if connected, set to OFF. . Set CONTRAST and BRIGHT knobs to the center position on the front panel. TP6 (AD IN)/MA-99 (B-3) Output waveform TP7 (VRT)/MA-99 (B-3) Output voltage TP8 (VRB)/MA-99 (B-3) Output voltage 10 9 8 7 6 5 4 AD IN (TP6) 3 2 1 0 VRT (TP7) VRB (TP8) Adjustments C ADJ adjustment 1RV5/MA-99 (C-1) B ADJ adjustment 1RV6/MA-99 (C-1) MA-99 1RV5 1RV6 TP7 TP8 TP6 RV6 2 1 0 VRB Adjust RV6 so that mid voltage between 0 and 1 is equaled to the VRB voltage. RV5 10 9 8 VRT Adjust RV5 so that mid voltage between 9 and 10 is equaled to the VRT voltage. 3-2 UP-895/(E)
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