Service manual

Troubleshooting
15
111707 Service Manual
TROUBLESHOOTING
4-2 No Video
Check the Power indicating LED
Does proper DC 5V appear at
pin 2,3 of U600
NO
Does proper signal appeear at
Pin 127,131,135,100,101 of
U201
NO
Does proper signal output
appear at pin48~57,64~73 of
U201
NO
YES
Green
YES
YES
Check U600 and related circuit
of U600
brinking
It indicates the monitor is in power
saving mode
Check CN100 and related circuit
of CN100
Check U201 and related circuit
of CN100
Replace Panel