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2.4 System Board Troubleshooting | 2 Troubleshooting Procedures |
Table
LED Status | Test item | Contents |
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B9h | Saving of key scan code |
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| Setting of TASK_1ms_TSC |
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| FAN control |
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| Sound initialization (for BEEP sound) | Cancel of sound mute |
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| Setting of volume to max (model that can |
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| control volume) |
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| When BIOS, EC/KBC rewriting is | Blinks green (cycle:2s, on:1s, off:1s) |
| requested |
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| When BIOS renewal is prohibited | Blinks orange (cycle:8s, on:4s, off:4s) HLT |
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| after BEEP is sounded for 30s (LED=BBH)) |
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| When BIOS ROM is abnormal | Blinks orange (cycle:2s, on:1s, off:1s) |
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| Key input | Prohibition of USB |
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| BEEP |
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| Waiting for Key input |
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| Reading of | FDC RESET |
| CHGBIOSA.EXE/CHGFIRMA.EXE | |
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| |
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| Setting of parameters for 2HD (1.44MB) |
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| Reading of first sector, If it is the data of |
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| 1.44MB (2HD), the media type is definite. |
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| Setting of parameters for 2DD (720KB) |
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| Retrieval of “CHGBIOSA.EXE” from the |
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| root directory. |
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| Calculation of directory start head and |
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| sector |
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| Read 1 sector of the root directory |
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| Retrieval of entry of “CHGBIOSA.EXE” |
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| /“CHGFIRMA.EXE” from the sector |
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| read. |
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| Reading of EXE header of |
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| “CHGBIOSA.EXE” and “CHGFIRMA.EXE” |
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| Key input when error occurred |
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| Execution of “CHGBIOSA.EXE” and |
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| “CHGFIRMA.EXE” |
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TECRA S3 Maintenance Manual | [CONFIDENTIAL] |