8399 N/B Maintenance
8.2 No Power(1)When power button is pressed ,nothing happens ,power indicator does not light up.
No power
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| AC Power | Check following parts and signals: | ||
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| Parts: | Signals: | |
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| Document | PJ1 | PWR_VDDIN | |
Is the |
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| PF1 | DVMAIN | ||
| Secret |
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| PD6 |
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Notebook connected | No Connect AC |
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| PL1 | ADEN# |
to power (Either AC adaptor | Adaptor or battery |
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| PL5 | I_LIMIT | |
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| PU1 | LEARNING | |||
or battery)? |
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| PD3 | ADINP |
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| PD5 | BATT |
Yes |
| MiTac |
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| Where |
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| Confidential |
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Please try another known good battery | From Power Source | Battery |
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or AC adapter. |
| Problem(First use |
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| AC to power it) |
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Power | Yes | Please replace the |
| Check following parts and signals: | ||
faulty AC adaptor |
| Parts: |
| Signals: | ||
OK? |
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| or Battery. |
| PJ2 | PR92 | BATT1 | |
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NO |
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| PF3 | PR94 | PWR_VDDIN |
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| PL16 | PR97 | DVMAIN | |
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| PL17 | RP44 | ADEN# |
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| PQ15 | PU20 | BAT_V |
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| PR75 | PR108 | BAT_T | |
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| PD6 | PR109 | BAT_C | |
Trouble shooting |
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| PR76 | PR85 | BAT_D | |
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| PQ14 | PR88 | KBC_+3VS |
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| KBC_CPUCORE |
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