Toshiba Tecra A8 Maintenance Manual - Page 102

2 Troubleshooting Procedures 2.7 Keyboard and Touch pad Troubleshooting Procedure 2 Connector Check and Replacement Check 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 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 8. Check 3 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. 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. 2-54 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)