2 Troubleshooting Procedures | 2.4 System Board Troubleshooting |
Table
D port status | Inspection items | Details |
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F00AH | Saving key scan code |
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| A setup of TASK_1 second_TSC |
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F00BH | Controlling fan |
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| Initializing sound items | Permission of system speaker |
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| Releasing mute | |
| (for BEEP) | |
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| Making the volume max (model that can control volume) |
| When request BIOS, EC/KBC |
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| rewriting | Blinks green (cycle:2s, on:1s, off:1s) |
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| BIOS ROM error | Blinks orange (cycle: 2s(On:1s,Off:1s)) |
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| Prohibition of USB |
| Key input |
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| BEEP | |
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| Waiting for key input |
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| Reading CHGBIOSA.EXE / | FDC reset |
| CHGFIRMA.EXE |
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| Setting parameters for 2HD(1.44MB) | |
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| Reading of first sector, If it is the data of 1.44MB |
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| (2HD), the media type is definite. |
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F00CH |
| Setting of parameters for 2DD (720KB) |
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| Retrieval of “CHGBIOSA.EXE” from the root |
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| directory. |
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| Directory start header and calculates the 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 read. |
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| Reading of EXE header of “CHGBIOSA.EXE” and |
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| “CHGFIRMA.EXE” Key input when error occurred |
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| Execution of “CHGBIOSA.EXE” and |
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| “CHGFIRMA.EXE” |
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[CONFIDENTIAL] | PORTEGE R500 Maintenance Manual |
