Epson WorkForce Enterprise WF-C21000 Series User Manual page 223

Solving Problems
You need to reconfigure the USB connection.
Solutions
Disconnect the USB cable from the computer. Right-click on the printer icon displayed on the computer,
and then select Remove Device. Next, connect the USB cable to the computer.
If you cannot use a USB cable, reset the USB connection by following the steps for changing the method
of connecting to a computer. See the related information link below for details.
"Making Settings for Connecting to the Computer" on page 303
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The printer is connected to a SuperSpeed USB port.
Solutions
If you connect the printer to a SuperSpeed USB port using a USB 2.0 cable, a communication error may
occur on some computers. In this case, re-connect the printer using one of the following methods.
❏ Use a USB 3.0 cable.
❏ Connect to a Hi-Speed USB port on the computer.
❏ Connect to a SuperSpeed USB port other than the port that generated the communication error.
Cannot Print Even Though a Connection has been Established (Windows)
The following causes can be considered.
There is a problem with the software or data.
Solutions
❏ Make sure that a genuine Epson printer driver (EPSON XXXXX) is installed. If a genuine Epson
printer driver is not installed, the available functions are limited. We recommend using a genuine
Epson printer driver.
❏ If you are printing a large data size image, the computer may run out of memory. Print the image at a
lower resolution or a smaller size.
❏ If you have tried all of the solutions and have not solved the problem, try uninstalling and then
reinstalling the printer driver
"Checking if a genuine Epson printer driver is installed - Windows" on page 206
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"Checking if a genuine Epson printer driver is installed - Mac OS" on page 207
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The Printer Does Not Work as Expected
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Cannot Print
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