2.4
System Board Troubleshooting
2
Troubleshooting Procedures
Table 2-3 Printer port LED boot mode status (1/8)
LED Status
Test item
Contents
Start
Clear of software reset bit
Prohibition of APIC
Initialization of MCHM
Initialization of ICHM
Initialization of Super I/O
Initialization of debug port
Dummy read of 3
rd
Bus data
B0h
Flash ROM check
PIT CH0 initialization (for HOLD_ON)
BIOS rewrite factor flag initialization
CHECK SUM CHECK
Transition to protected mode
Boot block checksum (skip when returned to S3)
The program halts when checksum error occurred.
Checksum other than boot block (skip when
returned to S3)
EC/KBC rewrite check
B1h KBC
initialization
If “rewrite” is requested, go to “BIOS rewrite
process”.
Transition of process to System BIOS IRT when
returned to S3)
Key input
Check of Tilde key (
key) and Tab key if a key
is pressed
B2h
BIOS rewrite request check
BIOS rewrite request check if Checksum check
error occurred on except Boot Block or rewrite is
required by user. “BIOS rewrite process”.
Transits to System BIOS IRT.
Initialization of ICHM. D31
DRAM configuration
Permission of cache (L1 cache only)
Memory clear
B3h BIOS
rewrite
(1)
Transition to real mode and copy of BIOS to RAM
B5h
Saving of key scan code
Setting of TASK_1ms_TSC
B6h
BIOS rewrite
FAN control
Sound initialization (for BEEP sound)
System speaker enable
Satellite A10/TECRA A1/Satellite Pro A10 Maintenance Manual (960-445)
2-21
Содержание Satellite Pro A10 series
Страница 11: ...Satellite A10 TECRA A1 Satellite Pro A10 Maintenance Manual 960 445 xi ...
Страница 12: ...Chapter 1 Hardware Overview ...
Страница 46: ...Chapter 2 Troubleshooting Procedures ...
Страница 47: ...2 Troubleshooting Procedures 2 2 ii Satellite A10 TECRA A1 Satellite Pro A10 Maintenance Manual 960 445 ...
Страница 51: ...2 Troubleshooting Procedures 2 vi Satellite A10 TECRA A1 Satellite Pro A10 Maintenance Manual 960 445 ...
Страница 112: ...Chapter 3 Tests and Diagnostics ...
Страница 113: ...3 Tests and Diagnostics 3 3 ii Satellite A10 TECRA A1 Satellite Pro A10 Maintenance Manual 960 445 ...
Страница 199: ...Chapter 4 Replacement Procedures ...
Страница 200: ...4 Replacement Procedures 4 4 ii Satellite A10 TECRA A1 Satellite Pro A10 Maintenance Manual 960 445 ...
Страница 206: ...4 Replacement Procedures 4 viii Satellite A10 TECRA A1 Satellite Pro A10 Maintenance Manual 960 445 ...
Страница 368: ...Appendices ...
Страница 369: ...Appendices App ii Satellite A10 TECRA A1 Satellite Pro A10 Maintenance Manual 960 445 ...
Страница 379: ...Appendices Apx A Handling the LCD Module A 6 Satellite A10 TECRA A1 Satellite Pro A10 Maintenance Manual 960 445 ...
Страница 405: ...Appendices Apx C Pin Assignment C 22 Satellite A10 TECRA A1 Satellite Pro A10 Maintenance Manual 960 445 ...
Страница 407: ...Appendices Apx D Keyboard Scan Character Codes D 2 Satellite A10 TECRA A1 Satellite Pro A10 Maintenance Manual 960 445 ...
Страница 411: ...Appendices Apx E Key Layout E 4 Satellite A10 TECRA A1 Satellite Pro A10 Maintenance Manual 960 445 ...
Страница 415: ...Appendices Apx G BIOS KBC EC Update G 2 Satellite A10 TECRA A10 Satellite Pro A10 Maintenance Manual 960 445 ...
Страница 417: ...Appendices Apx H Reliability H 2 Satellite A10 TECRA A1 Satellite Pro A10 Maintenance Manual 960 445 ...