Samsung SM-A526B Service Manual page 35

8. Level 3 Repair
8-4-8-5. Fingerprint Sensor
Fingerprint sensor doesn't work
Check the connectors of
Main PBA & Sub PBA
Check voltage
C1002 = 3.3V in Sub PBA
Check SPI of fingerprint sensor
4, 6, 8, 10pin of SOC1001 in Sub PBA
Swap fingerprint
sensor module
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung's written authorization is strictly prohibited.
YES
YES
o
YES
o
YES
o
YES
o
END
NO
Connect the Main PBA SOC9000
And Sub PBA SOC1002 again
NO
Swap U6010(3.3V) in Main PBA
NO
Swap U4000 in Main PBA