2 Troubleshooting Procedures | 2.4 System Board Troubleshooting |
Table
D port status | Inspection items | Details |
|
|
|
(F007H) |
| DRAM configuration |
|
|
|
|
| Permission of cache (L1 cache only) |
|
|
|
|
| Memory clear |
|
|
|
F008H | BTBK_INI_MEM_END |
|
|
|
|
| Transition to real mode and copy of |
|
| BIOS to RAM |
|
F009H | BTBK_CHG_RAM_BIOS |
|
|
|
|
| Saving key scan code |
|
|
|
|
F00AH | BTBK_INI_VGA_END |
|
|
|
|
| Controlling fan |
|
|
|
|
| Initializing sound items | Permission of system speaker |
| (for BEEP) |
|
| Releasing mute | |
|
| |
|
| Making the volume max (model that can control |
|
| volume) |
| When request BIOS, EC/KBC | Blinks green (cycle:2s, on:1s, off:1s) |
| rewriting | |
|
| |
F00BH | BTBK_CANT_UPDATE_BIOS |
|
|
|
|
| When BIOS renewal is prohibited | Blinks orange (cycle: 2s(On:1s,Off:1s)) |
|
|
|
| Key input | Prohibition of USB |
|
|
|
|
| BEEP |
|
|
|
|
| Waiting for key input |
|
|
|
| Reading CHGBIOSA.EXE / | FDC reset |
| CHGFIRMA.EXE |
|
| Setting parameters for 2HD(1.44MB) | |
|
| |
|
|
|
|
| Reading of first sector, If it is the data of 1.44MB |
|
| (2HD), the media type is definite. |
|
|
|
|
| Setting of parameters for 2DD (720KB) |
|
|
|
|
| Retrieval of “CHGBIOSA.EXE” from the root |
|
| directory. |
|
| Directory start header and calculates the sector |
|
| Read 1 sector of the root directory |
|
| Retrieval of entry of “CHGBIOSA.EXE” |
|
| /“CHGFIRMA.EXE” from the sector read. |
|
| Reading of EXE header of “CHGBIOSA.EXE” and |
|
| “CHGFIRMA.EXE” Key input when error occurred |
|
|
|
|
| Execution of “CHGBIOSA.EXE” and |
|
| “CHGFIRMA.EXE” |
|
|
|
[CONFIDENTIAL] | PORTÉGÉ M500 Maintenance Manual |
