Cannot Communicate with Machine via USB
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Check1 Make sure machine is turned on.
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Check2 Connect USB cable properly.
As the illustration below, the USB port is at the back of the machine.
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Check3 Do not start IJ Network Tool while printing.
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Check4 Do not print while IJ Network Tool is running.
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Check5 Make sure Enable bidirectional support is selected in Ports sheet of properties dialog box of printer driver. (Windows)