Epson STYLUS CPD-16671 Quick Manual page 15

You see incorrect characters.
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Make sure the USB cable is securely connected and meets the requirements on
page 17. Then try printing again.
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Make sure your printer is selected in your software. If you're using a
Macintosh, make sure your printer is set as the active printer in Print Center
(OS X) or the Macintosh Chooser (OS 8.6 to 9.x).
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If you're using a switch box or USB hub with your printer, connect the printer
directly to your computer.
Problems and Solutions
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