Toshiba TECRA R10 - Using the Keyboard

2.9 Membrane switch Troubleshooting 2 Troubleshooting Procedures
Procedure 2 Connector Check and Replacement Check
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 Membrane switch or 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 Membrane switch or cable 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.
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TECRA R10 Maintenance Manual (960-708) [CONFIDENTIAL] 2-41