Printer Diagnostics
Power-On Self Test
A power-on self test (POST) is performed automatically each time the printer is
turned on. During this test sequence, the front panel lights and liquid crystal display
monitor the progress of the POST. If the printer fails any of these tests, the word
“FAILED” will be added to the display. If this occurs, notify an authorized Zebra
reseller.
Additional Printer Self Tests
These self tests produce sample printouts and provide specific information that help
determine the operating conditions for the printer.
Each self test is enabled by pressing a specific front panel key or combination of keys
while turning the POWER switch on. Keep the key(s) depressed until the DATA
light turns off (approximately five seconds). When the power-on self test is
complete, the selected self test starts automatically.
NOTES: When performing self tests, avoid sending a label format to
the printer. In the case of a remote host, disconnect all data interface
cables from the printer.
When canceling a self test prior to its actual completion, always turn
the printer power off and then back on to reset the printer.
When performing these self tests while in the peel-off mode, you must
remove the labels as they become available.
If your media is not wide enough or long enough, unexpected and/or
undesired results may occur. Make sure that your print width is set
correctly for the media you are using before you run any self tests,
otherwise the test may print out on the platen roller. See page 42 for
information on setting the print width.
Zebra Z4M Printer User’s Guide 73
