Toshiba QOSMIO G10 Maintenance Manual page 75

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