Toshiba PROA500 Manual Do Utilizador

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2 Troubleshooting Procedures 
 
 
Satellite L500 / Pro L500 Series Maintenance Manual                        
43
 
The small board of button or the FFC assembles maybe the reason of button function fault. 
Either of these two may be damaged. To determine if the computer’s button is functioning 
properly, perform the following procedures. Figure 2-16 outlines the process. Start with 
Procedure 1 and continue with the other procedures as instructed. 
Procedure 1:  Diagnostic test 
Procedure 2:  Replacement check 
Procedure 1 
Diagnostic test 
Run the functioning Program on Windows model or DOS model, which will display the  test 
result. 
If tests and diagnostics result abnormal go to Procedure 2. If an error is not located, the button 
functioning is properly. 
 
Procedure 2 
Replacement check 
Disassemble the computer following the steps described in Chapter 4, Replacement 
Procedures
, and perform the following checks. 
 
Check 1 
Make sure that Button test operation is correct, go to Check 2. 
Check 2      Make sure that the FFC of the button is assemble OK, go to Check 3 
Check 3 
The button may be damaged.  Replace it with a new one following the 
instructions in Chapter 4.