Toshiba A20-S259 Maintenance Manual - Page 92

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. 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. 2-42 Satellite A20 Maintenance Manual (960-444)