Toshiba PORTEGE M400 User Manual
Page 101
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2.16 Tablet Pen Troubleshooting
2 Troubleshooting
Procedure 3
Connector Check and Replacement Check
The Digitizer and LCD are connected to the System board as below.
Check 1
The Digitizer may be disconnected. Make sure the Digitizer is connected to the
CN9540 on the System board. If there is still an error, go to Check 2.
Check 2
The Digitizer or the System board may be defective. Replace it with a new one
following the steps in Chapter 4. Then check the tablet pen is working properly.
PORTEGE M400 Maintenance Manual (960-541)
[CONFIDENTIAL]
2-53
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