mitac 8599.pdf - tim.id.au
mitac 8599.pdf - tim.id.au
mitac 8599.pdf - tim.id.au
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8599 N/B Maintenance<br />
8.5 External Monitor No Display or Color Abnormal (1)<br />
There is no display or picture abnormal on monitor.<br />
VGA Controller Failure<br />
1. Confirm monitor is good and check the cable<br />
are connected properly.<br />
2. Try another known good monitor<br />
Display<br />
OK?<br />
No<br />
Remove all the I/O device & cable from<br />
motherboard except extended monitor.<br />
Display<br />
OK?<br />
No<br />
Yes<br />
Yes<br />
Replace f<strong>au</strong>lty<br />
monitor.<br />
Connect the I/O device & cable<br />
to the M/B one at a <strong>tim</strong>e to find<br />
out which part is c<strong>au</strong>sing the<br />
problem.<br />
Replace<br />
Motherboard<br />
Board-level<br />
Troubleshooting<br />
One of the following parts on the mother-board may be<br />
defective, use an oscilloscope to check the following signal or<br />
replace the parts one at a <strong>tim</strong>e and test after each replacement.<br />
U12<br />
J2<br />
R153<br />
R136<br />
Q18<br />
Q19<br />
Q15<br />
Q11<br />
L5<br />
L6<br />
Parts: Signals:<br />
L7<br />
L8<br />
L9<br />
L10<br />
L11<br />
R4<br />
R3<br />
JL501<br />
JL502<br />
+3VS<br />
+5VS<br />
+3V<br />
CRT_RED<br />
CRT_GREEN<br />
CRT_BLUE<br />
CRT_DDDA<br />
CRT_HSYNC<br />
CRT_VSYNC<br />
CRT_DDCK<br />
107
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