Toshiba S500M Manual Do Utilizador

To check if the computer’s keyboard is malfunctioning or not, follow the troubleshooting 
procedures below as instructed. 

Procedure 1:  Diagnostic Test Program Execution Check 
Procedure 2:  Connector Check and Replacement Check 

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. 

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.