Toshiba Portege R500 Maintenance Manual - Page 66

2 Troubleshooting Procedures 2.4 System Board Troubleshooting Table 2-5 Debug port (Boot mode) error status (2/10) D port status Inspection items F00AH Saving key scan code A setup of TASK_1 second_TSC F00BH Controlling fan Initializing sound items (for BEEP) When request BIOS, EC/KBC rewriting Details Permission of system speaker Releasing mute Making the volume max (model that can control volume) Blinks green (cycle:2s, on:1s, off:1s) BIOS ROM error Key input Reading CHGBIOSA.EXE / CHGFIRMA.EXE F00CH Blinks orange (cycle: 2s(On:1s,Off:1s)) Prohibition of USB BEEP Waiting for key input FDC reset 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" 2-20 [CONFIDENTIAL] PORTEGE R500 Maintenance Manual (960-634)