Toshiba Portege R500 Maintenance Manual page 87

2.7 Keyboard and Dual point Troubleshooting
Procedure 2 Connector Check and Replacement Check
The keyboard, or touch pad may be 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.
Check 1 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.
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 5.
Check 3 Make sure the touch pad cable is securely connected to CN9850 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.
Check 4 The touch pad or Touch pad & LED member may be damaged. Replace it with a
new one and repeat Procedure 1. If there is still an error, go to Check5.
Check 5 The system board may be damaged. Replace it with a new one following the
instructions in Chapter 4, Replacement Procedures.
PORTEGE R500 Maintenance Manual (960-634) [CONFIDENTIAL]
2 Troubleshooting Procedures
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