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Paper roll is not installed
correctly.
Paper is out of
Printout is not clear
specification.
or has stains.
Dirty print head or platen
roller
Print darkness is too low.
Dirty print head or platen
roller
Vertical
print
content is missing.
Print head error
Check whether the paper roll
is
installed correctly or not.
Use the recommended
thermal
paper.
Clean the print head or
the
platen roller.
Increase the print darkness
in
the button configuration.
Clean the print head or
the
platen roller.
Contact your local dealer
or
manufacturer.
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