Toshiba PORTEGE M400 - Manual (Page 111)

2.18 Fingerprint sensor Troubleshooting 2 Troubleshooting
PORTEGE M400 Maintenance Manual (960-541) [CONFIDENTIAL] 2-63
Check 3 The NF 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.