User Guide

67
9-7 External Monitor No Display or Color Abnormal
The CRT monitor shows nothing or abnormal color, but it is OK for LCD.
VG
A
Co
n
t
r
o
ll
e
r F
a
il
u
r
e
1. Confirm External monitor is good and check the
VGA cable is connected properly.
2. Make sure the docking module VGA port is good.
3. Tr
y
another known
g
ood monitor or LCD module.
Replace the faulty
external monitor.
Display
ok ?
Remove all I/O device & cable from motherboard
except LCD panel or extended mon
itor.
Display
ok?
Connect the I/O device & cable
to the M/B one at a time to find
out which part is causing the
problem
Y
es
No
Yes
N
o
Board-level
Troubleshooting
Replace
Motherboard
Check if
U533, J504 are cold
solder?
Yes
Re-soldering
No
Check the following parts:
Signal: Parts: