Toshiba Qosmio G10 Series, Maintenance Manual, Page: 75 / 392

2.4 System Board Troubleshooting 2 Troubleshooting Procedures
Table 2-4 Debug port (Boot mode) error status (2/8)
D port status Inspection items Details
Saving key scan code
Setting TASK_1ms_TSC
Controlling fan
Enabling system speaker
Releasing mute
Initializing sound items (for
BEEP)
Making the volume max.
When request BIOS, EC/KBC
rewriting
Blinks green (cycle:2s, on:1s, off:1s)
When BIOS ROM abnormal Blinks orange (cycle:2s, on:1s, off:1s)
Key input Prohibition of USB
BEEP
Waiting for key
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.
Read 1 sector of the root directory
Reading CHGBIOSA.EXE /
CHGFIRMA.EXE
directory start header and calculates the
sector
Reading of EXE header of
“CHGBIOSA.EXE” and
“CHGFIRMA.EXE”, key input
when error occurred. Retrieval of entry of “CHGBIOSA.EXE”
/“CHGFIRMA.EXE” from the sector read.
F005h
Execution of “CHGBIOSA.EXE”
and “CHGFIRMA.EXE”
F100h Prohibition of cache
Initialization of MCHM
Initialization of ICH4M.D31.Func0
Initialization of ICH4M.D31.Func1
Initialization of USB.Func0,1,2,7
Initialization of ICH4M.D31.Func3
Initialization of ICH4M.D31.Func5
Initialization of H/W (before
DRAM recognition)
Initialization of FLUTE
Initialization of PIT channel 1
(Setting the refresh interval
“30
µ
s”)
2-22 QOSMIO G10 Maintenance Manual (960-497)