Troubleshooting
UDFPS
Symptom
Potential
Root Cause
Procedure
T064: Fingerprint sensor
failure
Damage
● Inspect display for damage and replace if
necessary.
Connectivity
issue
● Check if connectivity between Display
connector and Logic board are normal.
●
Check if connectivity between Display flex
connector and UDFPS are normal.
●
If they are not fully buckled, re-assemble
and then retest.
Connectors Location
Component
issue
● Use a good Display and Logic board to
cross check with original ones.
● Replace the defective component.
Disassembly
● Logic board
● Display
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