2 Troubleshooting Procedures
2.4 Main board Troubleshooting
2-20
Portege 2000 Maintenance Manual (960-333)
Table 2-3 D port status (1/6)
D port
status
Inspection items
details
Start
Clearing a software reset bit
Enabling address line A20
Initializing special registers and Intel chipset
Checking a flash memory
Initializing the CH0 of a PIT
Initializing flags determining whether BIOS is rewritten
Switching to protected mode
Examining the checksum of BootBlock
F000h
Examining the checksum of other data in a flash memory
F001h
Initializing a KBC (1)
Checking if EC/KBC firmware is to be rewritten
Initializing
a
KBC
Disabling network connecting
Sending command bytes
Sending scan enable command
Checking
F12
key-in
F002h
Checking whether BIOS rewrite
is requested
Checking whether BIOS rewrite is requested
F003h
Rewriting BIOS
Initializing GPIO I/O space
Enabling
BIOS
writing
Serial interrupt control
Disabling BIOS write protection
Enabling SMBus I/O space
Enabling SMBus access
Setting up FDC port
Configuring
DRAM
Enabling L1 cache memory
Clearing
memory
F004h
Storing key scan code
Setting up TASK_1ms_TSC
Enabling FDC interrupt
Summary of Contents for Portege 2000
Page 9: ...Chapter 1 Hardware Overview ...
Page 10: ...1 Hardware Overview 1 ii Portege 2000 Maintenance Manual 960 333 1 Hardware Overview ...
Page 30: ...1 Hardware Overview 1 7 AC Adapter 1 18 Portege 2000 Maintenance Manual 960 333 ...
Page 31: ...Chapter 2 Troubleshooting Procedures ...
Page 32: ...2 Troubleshooting Procedures 2 ii Portege 2000 Maintenance Manual 960 333 2 ...
Page 36: ...2 Troubleshooting Procedures 2 vi Portege 2000 Maintenance Manual 960 333 ...
Page 87: ...Chapter 3 Tests and Diagnostics ...
Page 88: ...3 Tests and Diagnostics 3 ii Portege 2000 Maintenance Manual 960 333 3 ...
Page 147: ...Chapter 4 Replacement Procedures ...
Page 148: ...4 Replacement Procedures 4 ii Portage 2000 Maintenance Manual 960 333 4 ...
Page 215: ...Appendices ...
Page 216: ...Appendices App ii Portege 2000 Maintenance Manual 960 333 ...
Page 222: ...Appendices App viii Portege 2000 Maintenance Manual 960 333 ...
Page 228: ...Appendices Apx A Handling the LCD Module A 6 Portege 2000 Maintenance Manual 960 333 ...
Page 264: ...Appendices Apx E Key Layout E 2 Portege 2000 Maintenance Manual 960 333 ...
Page 266: ...Appendices Apx F BIOS KBC EC Update F 2 Portege 2000 Maintenance Manual 960 333 ...
Page 268: ...Appendices Apx G Reliability G 2 Portege 2000 Maintenance Manual 960 333 ...
Page 270: ...Appendices Apx H Key FD H 2 Portege 2000 Maintenance Manual 960 333 ...