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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.