You see incorrect characters.

Make sure the USB cable is securely connected and meets the requirements on page 17. Then try printing again.

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).

If you’re using a switch box or USB hub with your printer, connect the printer directly to your computer.

Problems and Solutions 15