Acer A315-53G - USB Failure (USB2.0;3.0)

4-12 Troubleshooting
USB Failure (USB2.0/3.0)
If the USB fails, perform the following:
Figure 4-8. USB Failure
Start
Check USB
FFC to USB
Connect
Check USB/B
Re-assemble USB
FFC
OK
NG
Swap USB/B
OK
NG
Swap M/B
Check USB
CONN is well
Replace USB
CONN
OK
OK
NG