8399 N/B Maintenance
8.5 External Monitor No Display(1)There is no display or picture abnormal on CRT monitor, but LCD can normally display.
External Monitor No Display
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1. Confirm monitor is good and check |
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| Check if J2 | Yes | ||||
the cable are connected properly. |
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| Trouble shooting |
| are cold solder? | |||
2. Try another known good monitor. |
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| MiTac |
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| Confidential | J2 | L16 | C411 | CRT_HSYNC | ||
Display | Yes |
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| Check following parts and signals: | |||
OK? |
| Replace faulty | monitor. |
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| Signals: |
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| Replace |
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| Mother board | U12 | R421 | RP2 | CRT_DDDA |
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| U20 | R422 | C410 | CRT_DDCK |
No |
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| Q5 | L17 | C412 | CRT_VSYNC |
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| Q6 | L12 | R12 | CRT_TED | |
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| R420 | |||
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| L13 | R13 | CRT_GREEN | |
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| R423 | |||
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| L14 | R68 | CRT_BLUE | |
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| L15 | |||
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| U39 | CP1 | R69 | CRT_IN# |
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| U40 | CP2 |
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| L18 | C1 |
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