Toshiba A20-S259 - Satellite - Pentium 4 2.66 GHz Maintenance Manual page 92

2 Troubleshooting Procedures
Procedure 2 Connector and Replacement Check
The keyboard, touch pad or system board may be disconnected or damaged. Disassemble the
computer following the steps described in Chapter 4, Replacement Procedures and perform the
following checks. If the touch pad malfunctions, start with Check 3. If the keyboard
malfunctions, start with Check 1.
Check 1 Make sure the keyboard cable is firmly connected to PJ3230 on the system board.
If the connection is loose, reconnect firmly and repeat Procedure 2. If there is still an
error, go to Check 2.
Check 2 The keyboard may be damaged. Replace it with a new one following the instructions
in Chapter 4.
If the problem still exists, perform Check 3.
Check 3 Make sure the touch pad cable is firmly connected to PJ3240 on the system board.
If the connection is loose, reconnect firmly and repeat Procedure 1. If there is still an
error, go to Check 4.
Check 4 The touch pad may be damaged. Replace it with a new one following the instructions
in Chapter 4. If the problem still exists, perform Check 5.
Check 5 The system board may be damaged. Replace it with a new one following the
instructions in Chapter 4.
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2.7 Keyboard Troubleshooting
Satellite A20 Maintenance Manual (960-444)