TCL PIXI 5-10 4G VF - USB Is Not Recognized

L2E Repair Document TCL Communication Ltd.
Rev.
VF1300 Level 2E Repair Document
Page
1.0
37/39
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7.2.5 USB is not recognized
USB cable is normal? N Replace USB cable
Y
Y
Reweld or replace
VR1140
N
TVS diode VR1140 is normal?
USB connector is normal?
N
Reweld or replace
USB connector
Y
Reweld or replace
U0501
N
PMU U0501 is normal?
Replace PCBA
Y