8399 N/B Maintenance
8.7 Keyboard/Touch Pad Test Error(1)Error message of keyboard or
Keyboard or
Test Error
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| Document |
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| Secret | Check |
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| No |
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| U16, J501,J18 |
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Is K/B or |
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| for cold solder? |
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T/P cable connected to |
| No |
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| Correct it. |
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notebook |
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| MiTac | Troubleshooting |
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properly? |
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| ConfidentialReplace the faulty |
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Yes |
| J18 |
| C341 |
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| Check following parts and signals: |
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Try another known good Keyboard |
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or |
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| U16 |
| L67 | +KBC_VDDA | |
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| Replace |
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| U20 |
| L69 | KBD_CS0 | |||
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| Motherboard | U14 |
| R292 | +VDD3 | |||
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| J501 |
| RP51 | KI0..KI7 | |
Test | Yes |
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Keyboard or |
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| Q17 |
| C303 | KO0..KO15 | |||
Ok? |
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| KBC_EXTSMI# | ||||
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| Q27 |
| C304 | ||||
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| KBC_WAKE_UP# | ||||
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| R262 |
| X4 | ||
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| CLK_KBC | |||
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| SW502 |
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| T_DATA | |||
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| SW505 |
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| T_CLK |
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No |
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| SW503 |
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| SW504 |
| XIN |
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XOUT | 112 |
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