2.7 Keyboard Troubleshooting
To check if the computer's keyboard is malfunctioning or not, follow the troubleshooting
procedures below as instructed.
Procedure 1
Execute the Keyboard Test (DIAGNOSTIC TEST) and Pressed key display test (ONLY
ONE TEST) in the Diagnostic Program. Refer to Chapter 3, Tests and Diagnostics, for more
information on how to perform the test program.
If an error occurs, go to Procedure 2. If an error does not occur, keyboard is functioning
properly.
Satellite U400/Satellite Pro U400/PORTEGE M800 Maintenance Manual
Downloaded from LpManual.com Manuals
Procedure 1: Diagnostic Test Program Execution Check
Procedure 2: Connector and Replacement Check
Diagnostic Test Program Execution Check
Chapter2 Troubleshooting Procedures
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