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2.4 System Board Troubleshooting
2 Troubleshooting Procedures
TECRA M1 Maintenance Manual (960 -436)
2-25
Table 2-3 Printer port LED boot mode status (6/8)
LED Status
Test item
Message
Storing CMOS error status in IRT error status buffer
Start of TIMER initialization
Initialization of buffer for power save
0EH
System initialization
Update of system BIOS (model name, EDID of the LCD)
0FH
Display initialization
Waiting for the end of VGA chip initialization
10H
LOGO display
11H
Conventional memory check
(Boot)
12H
Extension memory check
Check of exceptional cases in protected mode (Boot)
Conventional memory initialization
(Reboot)
13H
(LED=14H when an error is
detected in check of exceptional
cases in protected mode)
15H
DMA Page Register check
(Boot)
16H
DMAC check
(Boot)
17H
DMAX initialization
(Boot)
18H
Printer check
19H
SIO check
(Reboot)
Waiting for the end of HDD initialization
Key input check during IRT (Waiting for the end of KBC
initialization)
ATA priority initialization
(Boot)
BM loading
BM initialization
Key input check during IRT (Waiting for the end of KBC
initialization)
Password input
1AH
Password check
Enabling BM
1BH
Extension I/O ROM check
Storing the value of 40:00h (for SIO save/store)
Font address setting for resume password
1CH
Final setting up prior to boot-up
Setting of parameter for character repeat on a USB
keyboard
Summary of Contents for Tecra M1
Page 1: ...Toshiba Personal Computer TECRA M1 Maintenance Manual TOSHIBA CORPORATION File Number 960 436 ...
Page 6: ...vi TECRA M1 Maintenance Manual 960 436 ...
Page 10: ...x TECRA M1 Maintenance Manual 960 436 3 29 SETUP 3 78 ...
Page 13: ...TECRA M1 Maintenance Manual 960 436 xiii ...
Page 14: ...Chapter 1 Hardware Overview ...
Page 15: ...1 Hardware Overview 1 ii TECRA M1 Maintenance Manual 960 436 ...
Page 32: ...1 2 System Unit Block Diagram 1 Hardware Overview TECRA M1 Maintenance Manual 960 436 1 15 ...
Page 54: ...Chapter 2 Troubleshooting Procedures ...
Page 55: ...2 Troubleshooting Procedures 2 ii TECRA M1 Maintenance Manual 960 436 ...
Page 58: ...2 Troubleshooting Procedures TECRA M1 Maintenance Manual 960 436 2 v ...
Page 60: ...2 Troubleshooting Procedures TECRA M1 Maintenance Manual 960 436 2 vii ...
Page 123: ...Chapter 3 Tests and Diagnostics ...
Page 124: ...3 Tests and Diagnostics 3 ii TECRA M1 Maintenance Manual 960 436 ...
Page 224: ...3 Tests and Diagnostics 3 29 SETUP 3 96 TECRA M1 Maintenance Manual 960 436 ...
Page 225: ...Chapter 4 Replacement Procedures ...
Page 226: ...4 Replacement Procedures 4 ii TECRA M1 Maintenance Manual 960 436 ...
Page 309: ......
Page 327: ...4 Replacement Procedure 4 25 Fluorescent Lamp 4 90 TECRA M1 Maintenance Manual 960 436 ...
Page 330: ...4 25 Fluorescent Lamp 4 Replacement Procedure TECRA M1 Maintenance Manual 960 436 4 93 ...
Page 349: ...Appendices ...
Page 350: ...Appendices App ii ...
Page 362: ...Appendices Appendix A Handling the LCD Module A 6 TECRA M1 Maintenance Manual 960 436 ...
Page 368: ...Appendices Appendix B Board Layout B 6 TECRA M1 Maintenance Manual 960 436 F VR3000 Volume ...
Page 395: ...Appendices Apx C Pin Assignments C 24 TECRA M1 Maintenance Manual 960 436 123 NC 124 B3V ...
Page 401: ...Appendices Apx C Pin Assignments C 30 TECRA M1 Maintenance Manual 960 436 41 FL P5V ...
Page 408: ...Appendix C Pin Assignments Appendices TECRA M1 Maintenance Manual 960 436 C 37 ...
Page 418: ...Appendices Appendix E Key Layout E 2 TECRA M1 Maintenance Manual 960 436 ...
Page 422: ...Appendices Appendix G BIOS Rewrite Procedures G 2 TECRA M1 Maintenance Manual 960 436 ...
Page 424: ...Appendices Appendix H EC KBC Rewrite Procedures H 2 TECRA M1 Maintenance Manual 960 436 ...
Page 426: ...Appendices Appendix I Reliability I 2 TECRA M1 Maintenance Manual 960 436 ...