Keyboard Troubleshooting; Procedure 1 Diagnostic Test Program Execution Check; Procedure 4 Diagnostic Test Program Execution Check; Procedure 5 Connector Check And Replacement Check - Toshiba Satellite L640 Maintenance Manual

Chapter 2 Troubleshooting Procedures

2.6 Keyboard Troubleshooting

To check if the computer's keyboard is malfunctioning or not, follow the troubleshooting
procedures below as instructed.
Procedu re 1: Diagnostic Test Program Execution Check
Procedure 2: Connector and Replacement Check
Procedure 1 Diagnostic Test Program Execution Check
Execute the Keyboard Test (DIAGNOSTIC TEST) and Pressed key display 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 L600/L640/L645, Satellite Pro L600/Pro L640/Pro L645 Maintenance Manual (960-Q08)