Chapter2 Troubleshooting Procedures
Satellite U400/Satellite Pro U400/PORTEGE M800
Maintenance Manual 2-1
2
2.1 Troubleshooting
Chapter 2 describes how to determine which Field Replaceable Unit (FRU) in the computer
is causing the computer to malfunction.
The FRUs covered are:
1. Power supply
6. Touch pad
11. Wireless LAN
2. System Board
7. Display
12. Sound
3. USB FDD
8. Optical Disk Drive
13, Finger Print Board
4. 2.5” HDD
9. Modem
14, B
lue
tooth
5. Keyboard
10. LAN
The Test Program operations are described in Chapter 3. Detailed replacement procedures are
described in Chapter 4.
NOTE: After replacing the system board or CPU, it is necessary to execute the subtest 01
initial configuration of the 3.3 Setting of the hardware configuration in Chapter
3. Also update with the latest BIOS as described in Appendix G “BIOS Rewrite
Procedures”
After replacing the LCD, update with the latest EC/KBC as described in
Appendix H “EC/KBC Rewrite Procedures” to set the SVP parameter.
The implement for the Diagnostics procedures is referred to Chapter 3. Also, following
implements are necessary:
1.
Phillips screwdrivers (For replacement procedures)
2.
Implements for debugging port check
•
Toshiba MS-DOS system FD
•
RS-232C cross cable
•
Test board with debug port test cable
•
PC for displaying debug port test result
Summary of Contents for Satellite Pro U400 Series
Page 110: ...Test Program for Field Satellite U400 and Satellite Pro U400 Tests and Diagnostics Manual 17 ...
Page 168: ...Replacement Procedures Satellite U400 Satellite Pro U400 PORTEGE M800 Maintenance Manual 4 iv ...
Page 276: ...Pin Assignment 36 Satellite U400 Satellite Pro U400 PORTEGE M800 Maintenance Manual ...
Page 302: ...Wiring Diagrams F 2 Satellite U400 Satellite Pro U400 PORTEGE M800 Maintenance Manual ...