Users Manual Part 4

141
Diagnostics and Troubleshooting
Troubleshooting—Communications Issues
5/9/19 ZT411/ZT421 Color Touch User Guide P1106464-001
Communications Issues
Label Formats Not Recognized
Issue Possible Cause Recommended Solution
A label format was sent to
the printer but was not
recognized. The DATA
light does not flash.
The communication
parameters are incorrect.
Check the printer driver or software
communications settings (if applicable) for
your connection. You may wish to reinstall the
printer driver following the instructions in
Install the Printer Driver and Connect to a
Computer on page 147.
A label format was sent to
the printer but was not
recognized. The DATA
light flashes but no
printing occurs.
The prefix and delimiter
characters set in the printer
do not match the ones in the
label format.
1. Tap Advanced > Print Character
Modification.
2. Verify the prefix and delimiter characters.
Incorrect data is being sent
to the printer.
Check the communication settings on the
computer. Ensure that they match the printer
settings.
If the problem continues, check the label
format.
Labels Stop Printing Correctly
Issue Possible Cause Recommended Solution
A label format was sent to
the printer. Several labels
print, then the printer
skips, misplaces, misses, or
distorts the image on the
label.
The serial communication
settings are incorrect.
Ensure that the flow control settings match.
Check the communication cable length. See
Communication Interface Specifications
on page 185 for requirements.
Check the printer driver or software
communications settings (if applicable).
DRAFT