Canon PIXMA MG4200 Series On-Screen Manual page 503

Home > Troubleshooting > Problems with the Machine
Connection
U102
Cannot Communicate with the Machine with USB Connection
Check 1: Make sure that the machine is turned on.
Check 2: Make sure that the USB cable is connected properly.
See Connecting the Machine to the Computer Using a USB Cable
Check 3: Do not start up IJ Network Tool while printing.
Check 4: Do not print while IJ Network Tool is running.
> Cannot Communicate with the Machine with USB
to connect the USB cable properly.
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