Service manual

P1165E&P5260E 25
Video Signal Troubleshooting
Computer
No Signal
Turn on
Source
Replace
Cable
Replace
Mainboard
Replace I/O
Board
OK
OK
OK
NG
NG
NG
NG
Check
I/O Board
Check
Cable
Check
Source
Check monitor
without signal
Video
No Signal
Turn on
Source
Replace
Cable
Replace I/O
Board
NG
NG
NG
OK
OK
Check
Cable
Check
Source
Check
I/O Board
Replace
Optical Engine
Check
Optical Engine
OK
NG
Replace Optical
Engine
Check
Optical Engine
OK
NG