Troubleshooting Procedures   
2.8.2  Procedure 2 Connector Check and Replacement Check 
The connection of the cable and board may be defective. Otherwise, they may be faulty. 
Disassemble the computer following the steps described in Chapter 4, Replacement 
Procedures, and perform the following checks: 
Check 1  Make sure the cables are firmly connected to the button board and system board. 
 
  If the connection is loose, reconnect firmly and repeat Procedure 1. If the problem 
still occurs, go to Check 2. 
 
Check 2  Dual point or the cable may be faulty. Replace it with a new one following the 
instructions in Chapter 4, Replacement Procedures. If the problem still occurs, 
perform Check 3. 
 
Check 3  Finger/Pad Button board or the cable may be faulty. Replace it with a new one 
following the instructions in Chapter 4, Replacement Procedures. If the problem 
still occurs, perform Check 4. 
 
Check 4  System board may be faulty. Replace it with a new one following the instructions 
in Chapter 4, Replacement Procedures. 
 
2-42 [CONFIDENTIAL] TECRA A11/S11/P11/Satellite Pro S500 Series Maintenance Manual (960-784)