5 ] The Usb Interface Malfunction - Brother P-touch QL-1050 Service Manual

[ 5 ] The USB interface malfunction.

The interface malfunction.
Is the USB cable
connected correctly?
Are the printer driver
and P-touch editor installed
onto the PC correctly?
Is the USB mode
selected in printer property?
Is the waveform of
USB connector normal?
The USB cable is defective.
Replace the cable.
N
Y
N
Y
N
Y
N
Y
IV- 7
Correct the connection.
Re-install the driver and editor
correctly.
Set to the USB mode.
The USB driver or CPU is defective.
Replace the main PCB ASSY.