121
8317
8317
N/B Maintenance
N/B Maintenance
8.4 External Monitor No Display(2)
There is no display or picture abnormal on CRT monitor, but it is OK for LCD.
Display
OK?
Display
OK?
External Monitor No Display
1. Confirm monitor is good and check
the cable are connected properly.
2. Try another known good monitor.
Remove all the I/O device & cable
from motherboard except monitor.
Replace faulty monitor.
Connect the I/O device & cable to
the M/B one at a time to find out
which part is causing the problem.
Yes
No
Yes
No
Yes
Re-soldering.
No
One of the following parts on the mother-board may be
defective, use an oscilloscope to check the following signal or
replace the parts one at a time and test after each replacement.
Parts:
U1005
FA1
FA2
J1000
Q1000
Q1001
RP1
CP1
CP2
C12..C14
C92..94
Signals:
+5VS
+3VS
CRT_DDDA
CRT_HSYNC
CRT_VSYNC
CRT_DDCK
CRT_RED
CRT_GREEN
CRT_BLUE
Board-level
Troubleshooting
Replace
Motherboard
Check if J1000
are cold solder?