Toshiba PORTEGE R400 Maintenance Manual page 105

Procedure 4 Connector Check and Replacement Check
The Fingerprint sensor cable is connected to the connector CN9670 on the Fingerprint sensor
board and connector CN9540 on the system board.
Check 1 Check the Fingerprint sensor cable is firmly connected to the connector CN9670
on the Fingerprint sensor board and connector CN9540 on the system board. If
not, connect it firmly. If the Fingerprint sensor is still not functioning properly,
perform Check 2.
Check 2 The Fingerprint sensor cable may be faulty. Replace it with a new one. If the
problem persists, perform Check 3.
Check 3 The Fingerprint sensor board may be faulty. Replace it with a new one. If the
problem persists, perform Check 4.
Check 4 The system board may be faulty. Replace it with a new one.
PORTEGE R400 Maintenance Manual (960-623)
2 Troubleshooting Procedures
[CONFIDENTIAL] 2-67