Compal JHL90 - 6. External USB Devices Troubleshooting

JHL90 Service Manual
6. External USB Devices Troubleshooting
START
Figure 6-5 External USB device troubleshooting process
Perform external device and
connection check (Procedure 1)
Does the device function
when connected to a
different USB port?
Check USB port
connection
Does an alternative USB
device function correctly?
Original USB
device is faulty
Replace system board
(Procedure 2)
END
No
No
Yes
Yes
6-15