2
Troubleshooting Procedures
2.4
System
Board Troubleshooting
2-22
Portege M200 Maintenance Manual (960-457)
Table 2-3 D port status (1/7)
D port
status
Details
Remarks
Clearing software reset bit
Enabling address line A20
Initializing special registers and M1535
Initializing the CH0 of a PIT (for HOLD_ON)
Initializing flag for BIOS rewriting factor
CHECK SUM CHECK (FEFC0000h to FEFF7FFFh)
Shifting to protected mode
Examining the checksum of Boot Block
HALT when checksum is not correct.
F000h
Examining the checksum of data except Boot Block
F001h
Checking if EC/KBC firmware is to be rewritten
Shifting to BIOS rewriting process if
BIOS rewriting request exists
Executing KBC initializing sequence
Sending KBC enable command
Checking F12 key-in
F002h
Initializing security controller
F003h to
F005h
Checking whether BIOS rewrite is requested
Checksum error except Boot Block or
rewriting request by F12key-in
F006H
Checking BIOS signature
F007h
Shifting process to System BIOS IRT side
For BIOS rewriting process
BIOS rewriting process
Initializing unique HW for this model
Initializing GPIO I/O space
Enabling BIOS writing
Serial interrupt control
Canceling BIOS write protection
Enabling SMBus I/O space
Enabling SMBus access
Configuring DRAM
Enabling L1 cache memory
Clearing memory
F008h
Changing ROM BIOS to RAM BIOS
Storing key scan codes
Setting up TASK_1ms_TSC
F009h
Displaying message on navipanel (EC/KBC UPDATE,
BIOS UPDATE/DAMAGED)
Содержание M200 - Portege - Pentium M 1.5 GHz
Страница 1: ...1 Toshiba Personal Computer Portege M200 Maintenance Manual TOSHIBA CORPORATION File Number 960 457 ...
Страница 9: ...Portege M200 Maintenance Manual 960 457 ix Appendix H Key FD H 1 ...
Страница 10: ...x Portege M200Maintenance Manual 960 457 ...
Страница 11: ...Chapter 1 Hardware Overview ...
Страница 12: ...1 Hardware Overview 1 ii Portege M200 Maintenance Manual 960 457 1 Hardware Overview ...
Страница 33: ...Chapter 2 Troubleshooting Procedures ...
Страница 34: ...2 Troubleshooting Procedures 2 ii Portege M200 Maintenance Manual 960 457 2 ...
Страница 38: ...2 Troubleshooting Procedures 2 vi Portege M200 Maintenance Manual 960 457 ...
Страница 96: ...2 Troubleshooting Procedures 2 16 Bluetooth Troubleshooting 2 58 Portege M200 Maintenance Manual 960 457 ...
Страница 97: ...Chapter 3 Tests and Diagnostics ...
Страница 98: ...3 Tests and Diagnostics 3 ii Portege M200 Maintenance Manual 960 457 3 ...
Страница 119: ...3 7 Keyboard Test 3 Tests and Diagnostics Portege M200 Maintenance Manual 960 457 3 19 PRESS Enter KEY ...
Страница 184: ...Chapter 4 Replacement Procedures ...
Страница 185: ...4 Replacement Procedures 4 ii Portege M200 Maintenance Manual 960 457 4 ...
Страница 189: ...4 Replacement Procedures 4 vi Portege M200 Maintenance Manual 960 457 ...
Страница 258: ...Appendices ...
Страница 259: ...Appendices App ii Portege M200 Maintenance Manual 960 457 ...
Страница 265: ...Appendices App viii Portege M200 Maintenance Manual 960 457 ...
Страница 271: ...Appendices Apx A Handling the LCD Module A 6 Portege M200 Maintenance Manual 960 457 ...
Страница 279: ...Appendices Apx B Board Layout B 8 Portege M200 Maintenance Manual 960 457 ...
Страница 309: ...Appendices Apx C Pin Assignment C 30 Portege M200 Maintenance Manual 960 457 ...
Страница 319: ...Appendices Apx E Key Layout E 2 Portege M200 Maintenance Manual 960 457 ...
Страница 321: ...Appendices Apx F BIOS KBC EC Update F 2 Portege M200 Maintenance Manual 960 457 ...
Страница 323: ...Appendices Apx G Reliability G 2 Portege M200 Maintenance Manual 960 457 ...
Страница 325: ...Appendices Apx H Key FD H 2 Portege M200 Maintenance Manual 960 457 ...