8170 N/B MAINTENANCE
8.5 VGA Controller Failure Monitor No Display
There is no display or picture abnormal on monitor.
VGA Controller Failure
1.Confirm monitor is good and check the cable are connected properly.
2. Try another known good monitor
Troubleshooting
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| Replace |
Display | Yes | Replace faulty | Motherboard |
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OK? |
| monitor. | |
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No
Remove all the I/O device & cable from motherboard except extended monitor.
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| Yes | Connect the I/O device & cable |
Display | to the M/B one at a time to find | |||
OK? |
| out which part is causing the | ||
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| problem. |
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| No |
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One of the following parts on the
Parts: |
| Signals: | |
U516 | R544 |
| RED |
R543 | Q501 |
| GREEN |
Q501 | CP3 |
| BLUE |
RP501 CP501 |
| SDA | |
FA500 L500 |
| HSYNC | |
L501 | L502 |
| VSYNC |
CP500 F501 |
| SCL | |
D500 | J1 |
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