Canon PIXMA iP8750 User Manual
Page 310
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Cannot Communicate with the Printer with USB Connection
Check1
Make sure that the printer is turned on.
Check2
Make sure that the USB cable is connected properly.
Connecting the Printer to the Computer Using a USB Cable
to connect the USB cable properly.
Check3
Do not start up IJ Network Tool while printing.
Check4
Do not print while IJ Network Tool is running.
310
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