Toshiba libretto U100 Maintenance Manual page 85

2.7 Keyboard Troubleshooting
Procedure 2 Connector and Replacement Check
The keyboard be disconnected or damaged. Disassemble the computer following the steps
described in Chapter 4, Replacement Procedures, and perform the following checks:
Check 1 Make sure the keyboard cable is securely connected to the connector CN3230 on
the System board.
If the connection is loose, reconnect firmly and repeat Procedure 1. If there is still
an error, go to Check 2.
Check 2 The keyboard or its cable may be damaged. Replace it with a new one following
the instructions in Chapter 4, Replacement Procedures. If the problem still exists,
perform Check 3.
Check 3 The System board may be damaged. Replace it with a new one following the
instructions in Chapter 4, Replacement Procedures.
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libretto U100 Maintenance Manual (960-520)
2 Troubleshooting Procedures
[CONFIDENTIAL] 2-41