Cannot Communicate with Printer via USB

-
Check1 Make sure printer is turned on.
-
Check2 Connect USB cable properly.
As the illustration below, the USB port is at the back of the printer.
Important
- Connect the "Type-B" terminal to the printer with the notched side facing UP. For details, refer to the instruction manual supplied with the USB cable.
-
Check3 Make sure Enable bidirectional support is selected in the Ports sheet of the properties dialog box of the printer driver. (Windows)
If not, select it to enable bidirectional support.