User's Manual Part 3

Print Quality Problems
No print on the label.
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You must use the correct media for the method of printing you require.
When printing without a ribbon, you must use direct thermal media.
When using ribbon, you must use thermal transfer media. The printer's
ribbon sensor detects motion of the supply spindle.
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Is the media loaded correctly? Follow the instructions in “Loading the
Media” on page .
The printed image does not look right.
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The print head is dirty. Clean the print head according to the
instructions on page .
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The print head is under temperature.
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Adjust the print darkness and/or print speed. Refer to the six-flash
sequence in “Feed Button Modes” on page 50, or the ^PR and ~SD
commands in the ZPL II Programming Guide.
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The media being used is incompatible with the printer. Be sure to use
the recommended media for your application, and always use
Zebra-approved labels and tags.
There are long tracks of missing print (blank vertical lines) on
several labels.
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The print Head is dirty. Clean the print Head according to the
instructions on page .
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The print Head elements are damaged. Replace the print Head (see
“Replacing the Print Head” on page ).