Datamax-O'Neil ANDES 3 User Guide - Manual (Page 26)

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4.6 Troubleshooting
Problem Action
Does not feed paper or has a paper jam.

Remove any jammed supply

Reload paper supply.
Does not print 
Check or replace the printer’s battery

Make sure the paper supply is loaded correctly, not
backwards.

Verify communication between the host device and
the printer by disconnecting the communication
cable and performing a printer self test.
Light printing 
Check or recharge the battery
 Adjust the print contrast through print application.
Voids in printing 
Clean the print head following the cleaning.
Instruction listed in
Section 4.1 .
Red (Error) LED on 
Check that paper roll is not out and paper door is
closed.

Error reading MCR.
 After extended printing, print head may be hot;
printer will pause before resuming printing.
If the problem is not identified by following the above trouble shooting guide, contact
Datamax-O’Neil Technical Support. Support numbers and Email addresses are listed at
Section 6 of this manual.
Other than routine cleaning and other maintenance described in Section 4, the
printer is not intended to be serviced by the user. It must be returned to an
Authorized Service Center. Under no circumstances should the user attempt to
take the printer apart.