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2 Troubleshooting Procedures 2.7 Keyboard Troubleshooting
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.
Keyboard cable
System board
PJ3230
Keyboard
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.
Touch pad cable
System board
PJ3240
Touch pad
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.
2-42 Satellite A20 Maintenance Manual (960-444)