Toshiba TECRA A8 series Maintenance Manual page 102

2 Troubleshooting Procedures
Procedure 2
The keyboard, touch pad or sensor/switch board may be disconnected or damaged.
Disassemble the computer following the steps described in Chapter 4, Replacement
Procedures, and perform the following checks:
1. If the keyboard malfunctions, start with Check 1.
2. If the touch pad malfunctions, start with Check 3.
3. If the SW membrane malfunctions, start with Check 6.
Check 1
Check 2
Check 3
Check 4
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Connector Check and Replacement Check
Make sure the keyboard cable is securely connected to CN3230 on the system
board.
If the connection is loose, reconnect firmly and go to Procedure 1. If there is still
an error, go to Check 2.
The keyboard or its cable may be damaged. Replace it with a new one following
the instructions in Chapter 4, Replacement Procedures. If the problem still exists,
perform Check 8.
Make sure the touch pad cable is firmly connected to CN3240 on the system
board.
If the connection is loose, reconnect firmly and go to Procedure 1. If there is still
an error, go to Check 4.
The touch pad may be damaged. Replace it with a new one following the
instructions in Chapter 4, Replacement Procedures. If the problem still exists,
perform Check 5.
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2.7 Keyboard and Touch pad Troubleshooting
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)