LG H990ds - Fingerprint Sensor Troubleshooting

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reserved. Only training and service purposes
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3. TROUBLE SHOOTING
3.16.3 Sensor - Fingerprint Sensor
When Fingerprint sensor does not working, check fingerprint sensor IC and contact pin.
START
Function is OK ?
No
Yes
No
Calibration OK ?
Check the sensor function
YES
Function is OK ?
END
END
YES
END
No
Replace Main PCB
Change the sensor FPCB
Fingerprint Sensor FPCB
Image Checking Flow
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