Toshiba Satellite R10 Maintenance Manual page 77

2 Troubleshooting
Table 2-3 Debug port (Boot mode) error status (2/9)
D port status
B4h/B5h Saving key scan code
Setting TASK_1ms_TSC
Controlling fan
Initializing sound items (for
BEEP)
When BIOS, EC/KBC rewriting
is requested
When BIOS ROM is abnormal
Key input
Reading CHGBIOSA.EXE /
CHGFIRMA.EXE
(B3h)
00h
Cache control processing for
HyperThreading
Prohibition of cache
Satellite R10 Maintenance Manual (960-509)
Inspection items
2.4 System Board Troubleshooting
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)
Temporary 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.
Calculation of directory start head and
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 "
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