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2 Troubleshooting Procedures
2.4 System Board Troubleshooting
Table 2-4 Debug port (Boot mode) error status (1/8)
D port status
Inspection items
Details
Permission of A20 and 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
PIT CH0 initialization (for
HOLD_ON)
BIOS rewrite factor flag
initialization
Transition to protected mode
Boot block checksum (skip when returned
to S3) (halts when error)
F000h
CHECK SUM CHECK
Checksum other than boot block (skip
when returned to S3)
F001h
EC/KBC rewrite check
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, Tab key if a key is
pressed
F002h
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”.
F003h
Transits to System BIOS IRT
BIOS rewrite
Initialization of ICHM. D31
DRAM configuration
Permission of cache (L1 cache
only)
Memory clear
Transition to real mode and copy
of BIOS to RAM
QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL]
2-21
Содержание QOSMIO G20 Series
Страница 10: ...x CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 11: ...Chapter 1 Hardware Overview CONFIDENTIAL ...
Страница 12: ...1 Hardware Overview 1 ii CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 38: ...1 9 AC Adapter 1 Hardware Overview 1 24 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 39: ...Chapter 2 Troubleshooting Procedures CONFIDENTIAL ...
Страница 40: ...2 2 ii CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 44: ...2 vi CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 113: ...Chapter 3 Tests and Diagnostics CONFIDENTIAL ...
Страница 114: ...3 Tests and Diagnostics 3 3 ii CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 223: ...3 Tests and Diagnostics 3 32 SETUP QOSMIO G20 Maintenance Manual 960 511 CONFIDENTIAL 3 105 ...
Страница 236: ...3 32 SETUP 3 Tests and Diagnostics 3 118 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 237: ...Chapter 4 Replacement Procedures CONFIDENTIAL ...
Страница 238: ...4 Replacement Procedures 4 4 ii CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 331: ...Appendices CONFIDENTIAL ...
Страница 332: ...App ii CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 347: ...Appendix A Handling the LCD Module A 6 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 354: ...Appendix B Board Layout B 4 SD board QOSMIO G20 Maintenance Manual 960 511 CONFIDENTIAL B 7 ...
Страница 360: ...Appendix B Board Layout B 9 TV antenna board QOSMIO G20 Maintenance Manual 960 511 CONFIDENTIAL B 13 ...
Страница 408: ...E 2 United Kingdom UK Keyboard Appendix E Key Layout E 2 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 410: ...F 2 LAN loopback Connector Appendix F Wiring Diagrams F 2 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 412: ...Appendix G BIOS Rewrite Procedures G 2 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...
Страница 416: ...Appendix I Reliability I 2 CONFIDENTIAL QOSMIO G20 Maintenance Manual 960 511 ...