41
BACKLIGHT_ON/OFF pin should be high when the backlight is ON. R119 must be low
when the backlight is OFF. If it is a problem, please check Q10 and the panel cables. Also it
can be tested in TP50 in main board.
Dimming pin should be high or square wave in open position. If it is low, please check S60
for Mstar side and panel or power cables, connectors.
Backlight power supply should be in panel specs. Please check Q33, shown below; also it can
be checked TP53.
Summary of Contents for 17MB95S
Page 1: ...1 SERVICE MANUAL 17MB95S 15 11 2012...
Page 6: ...6 Table 1 Pin functions...
Page 9: ...9 c Pin descriptions and functions Figure 2 Pin description...
Page 10: ...10 Table 2 Pin functions...
Page 17: ...17 Table 5 Recommended operating conditions Figure 7 Pin description...
Page 24: ...24 b Features...
Page 25: ...25...
Page 26: ...26...
Page 46: ...46...
Page 49: ...49 Service Menu Main Screen Video Settings...
Page 50: ...50 Audio Settings Options 1 Menu...
Page 51: ...51 Options 2 Menu Options 3 Menu...
Page 52: ...52 Tuner Settings Menu Source Settings Menu...
Page 53: ...53 Diagnostic Menu...
Page 54: ...54 15 General Block Diagram...