Toshiba TECRA M9 Maintenance Manual page 90

2 Troubleshooting Procedures
Procedure 2 Connector Check and Replacement Check
The keyboard, Dual point 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 or AccuPoint malfunctions, start with Check 1.
2. If the Dual point malfunctions, start with Check 3.
3. If the power switch, InTouch button or Presentation button malfunctions, start with
Check 5.
Check 1 Make sure the keyboard cable is securely connected to CN3230 on the system
board.
If the connection is loose, reconnect firmly. 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 Dual point cable is firmly connected to CN3240 on the system
board.
If the connection is loose, reconnect firmly. If there is still an error, go to Check 4.
Check 4 The Dual point or the Dual point 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.
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2.7 Keyboard and Dual point Troubleshooting
[CONFIDENTIAL] TECRA M9 Maintenance Manual (960-631)