Toshiba Tecra A2-S239 Maintenance Manual - Page 76

2 Troubleshooting Procedures 2.4 System Board Troubleshooting D port status F005h Table 2-3 D port status (2/9) Inspection items Executing CHGBIOSA Details 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 firs t 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)