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PA/PT400 & PA/PT 403 User’s Guide 35
•You may be trying to use the printer outside of its environmental limits.
The correct operating temperature range for this printer is between
32∞ F and 104∞ F (0∞ to 40∞ C).
The printed image doesn’t look right.
• The printhead is dirty. Clean the printhead according to the
instructions in “Preventive Maintenance”.
•Printhead pressure needs to be adjusted. Follow the steps in
“Adjusting the Printhead Pressure” in “Getting Ready to Print”.
• The print darkness needs to be adjusted. See “Adjusting the Print
Darkness” in “Getting Ready to Print”.
• The print mode may be incompatible with the media you are using. If
your printer is set for thermal transfer mode, you must use thermal
transfer, rather than direct thermal, media and a ribbon cartridge.
• The media being used is incompatible with the printer. Be sure to use
the Zebra-recommended media for your application.
• Battery voltage is low. See “Charging the Battery” in “Getting Ready to
Print”.
There are long tracks of missing print (blank vertical lines) on
several labels.
• The printhead is dirty. Clean the printhead according to the
instructions in “Preventive Maintenance”.
• The printhead elements are damaged. Call a qualified service
technician to replace the printhead.
Mis-registration of labels (the printing does not start at the top of
the label) and misprinting of 1 to 3 labels.
• The media may not be threaded under the media guides. Refer to
“Loading the Media” in “Getting Ready to Print”.
• The printer needs to be calibrated. Refer to “Calibration”.
•Printhead pressure needs to be adjusted. Follow the instructions in
“Adjusting the Printhead Pressure” in “Getting Ready to Print”.
• The correct media sensor may not be activated. In manual calibration,
select the media sensing method for the labels you are using (refer to
your label preparation software user’s manual).
A label format was sent to, but not recognized by, the printer.
• Is the printer in pause mode? If so, press the Feed button.
• If the LEDs are on or flashing, refer to “Help! The LEDs are On/Off/
Flashing!” in “Troubleshooting”.
• Make sure the data cable is installed correctly. Also, make sure you
are using a null modem cable between the printer’s adapter cable and
the computer (see Figure 19), or the appropriate null modem cable.
•A communications problem has occurred. First, make sure that the