User Guide

2 Troubleshooting Procedures 2.4 System Board Troubleshooting
Table 2-3 D port status (2/9)
D port
status
Inspection items Details
F005h Executing CHGBIOSA Storing key scan code
Setting up TASK_1ms_TSC
Controlling Fan
Initializing sound systems (For beep sound)
Enabling system speaker
Canceling mute
Maximizing volume
When BIOS,EC/KBC is requested to be rewritten
(Green blinks in 2s cycle (ON:1s, Off: 1s))
Abnormal BIOS ROM
(Orange blinks in 2s cycle (ON:1s, Off: 1s))
Key input
Disabling USB first
Sound beep
Waiting for key input
Loading CHGBIOSA.EXE/CHGFIRMA.EXE
Reset FDC
Setting up the parameter for 2HD (1.44MB)
Loading first sector and Confirming the media
if it is 2HD (1.44MB)
Setting up the parameter for 2DD (720KB)
Searching CHGBIOSA.EXE from route directory
Calculate starting directory head, sector
Loading route directory per sector
Searching entry of “CHGBIOSA.EXE/CHGFIRMA.EXE”
from the loaded sector
Loading EXE header of “CHGBIOSA.EXE
/CHGFIRMA.EXE”, Key input when an error occurred
Executing “CHGBIOSA.EXE”/”CHGFIRMA.EXE”
2-22 Satellite A50/TECRA A2 Maintenance Manual (960-478)