Chapter2 Troubleshooting Procedures
Procedure 2
Connector and Replacement Check
The connection of cable and board may be defective. Otherwise, they may be faulty.
Disassemble the computer following the steps described in Chapter 4,
Replacement
Procedures
, and perform the following checks:
Check 1
Make sure keyboard cable is firmly connected to system board.
If the connection is loose, reconnect firmly and repeat Procedure 1. If the problem
still occurs, go to Check 2.
Check 2
Keyboard may be faulty. Replace it with a new one following the instructions in
Chapter 4,
Replacement Procedures
. If the problem still occurs, perform Check 3.
Check 3
System board may be faulty. Replace it with a new one following the instructions
in Chapter 4,
Replacement Procedures
.
2-32 Satellite U400/Satellite Pro U400/PORTEGE M800
Maintenance Manual
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 ...