Troubleshooting Procedures
With no error surveillance
Error code | Meaning |
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|
A0h | voltage is over 5.00V. |
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A1h | voltage is under 0.00V when the computer is powered on. |
|
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A2h | voltage is under 0.00V when the computer is booting up. |
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|
1R5-B1V output
Error code | Meaning |
|
|
B0h | |
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B1h | |
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B2h | |
|
|
B3h | |
| stop. |
| (Although the power supply should be Off(ed), power supply voltage was detected) |
| However, it restricts to the time when the "OUTV7 |
| was specified. |
|
|
1R05M-E1V output
Error code | Meaning |
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|
C0h | |
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C1h | |
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C2h | |
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PTV output
Error code | Meaning |
|
|
D0h | PTV voltage is over 1.26V. |
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D1h | PTV voltage is under 0.00V when the computer is powered on. |
|
|
D2h | PTV voltage is under 0.55V when the computer is booting up. |
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PORTEGE M780 Maintenance Manual | [CONFIDENTIAL] |