2 Troubleshooting Procedures | 2.4 System Board Troubleshooting |
Table 2-4 Debug port (Boot mode) error status (3/8)
D port status | Inspection items | Details |
|
|
|
F101h | Checking DRAM type and size | When unsupported memory connected, beeps |
| and halts. | |
| (at cold boot) | |
| (When DRAM size = o, it halts.) | |
|
| |
|
|
|
| Testing the stack area of SM- | (When it can not be used, halts.) |
| RAM | |
|
| |
|
|
|
F102h | Configuring cache memory |
|
|
|
|
| Permission of L1/L2 cache |
|
| memory |
|
| Checking the access of a | (When error detected, it halts.) |
| CMOS (Only in Cold Boot) | |
|
| |
|
|
|
| Examining the battery level of |
|
| CMOS |
|
|
|
|
| Checksum check of CMOS |
|
|
|
|
| Initializing data in CMOS (1) |
|
|
|
|
| Setting up IRT status | (Setting of boot status and IRT busy flag, The |
| rest bit is 0) | |
|
| |
| Storing the size of DRAM |
|
|
|
|
F103h | Branch of resuming | When a CMOS error is detected, no resume |
| (only in Cold Boot) | occurs. |
|
|
|
|
| If “resume status code” is not set, no resume |
|
| occurs. |
|
| Resume error check |
|
| S3 recovery error (ICH) |
|
| Resume error F17AH |
|
| |
|
| Resume error F173H |
|
| Memory configuration change check |
|
| Resume error F173H |
|
| Checksum check of system BIOS RAM area |
|
| Resume error F179H |
|
| Checksum check of expansion memory |
|
| Resume error F176H |
|
| Checksum check of PnP RAM |
|
| Resume error F177H |
|
| To resume process (RESUME_MAIN) |
|
|
|
| Resume error process | Returns the CPU clock to “Low” |
|
|
|
|
| Prohibition of all SMI |
|
|
|
|
| Clears resume status |
|
|
|
|
| Return to ROM |
|
|
|
QOSMIO G20 Maintenance Manual | [CONFIDENTIAL] |
