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CONFIDENTIAL – DO NOT COPY
Page 9-1
File No. SG-0198
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Chapter 9 Trouble shooting
MONITOR DISPLAY NOTHING (PC MODE)
Start
LED is lighted
1. Is Power board output
+5V?
2. Is J7 connector good?
3. Is DC-DC OK?
4. Is U6&U4 (3.3V) working ok?
LED is lighting?
It is in power saving
1. Check video cable
2. Is the timing supported?
3. Check sync input
4. Check VGASOG rout if analog
(SOG)
Is backlight on?
1.Check J7 PIN 14
2.Is inverter ok?
3.Is Power Board ok?
U11 no data out?
It means data to LVDS
1.Is J5 connecting OK?
2.Check J7 +5V&+12V
3.Is panel ok?
4.
Check P3 D-sub Input correct
5. Check analog input route
END