Toshiba Satellite A350 Maintenance Manual page 103

2 Troubleshooting Procedures
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Procedure 1
The Sensor button is connected via the Sensor button FFC to the system board. Make sure the
Sensor button FFC cable is firmly connected to the Sensor button and system board. Refer to
Chapter 4, Replacement Procedures, for instructions on how to disassemble the computer and
then perform the following checks.
If any of the connections are loose, reconnect firmly. If any of the connections is damaged, or
there is still an error, go to Procedure 2.
Procedure 2
The Sensor button unit or FFC may be defective or damaged. Replace each with a new Logic
Upper following the steps in Chapter 4. If the Sensor button is still not functioning properly,
replace the system board with a new one following the steps in Chapter 4.
Satellite A350, SATEGO A350, EQUIUM A350 Series Maintenance Manual
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Sensor button connection check
Logic Upper replacement check
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