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Zebra Z4M/Z6M Printers User’s Guide 75
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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
(LCD) monitor the progress of the POST. If the printer fails any of these tests, the
word “FAILED” is added to the display. If this occurs, notify an authorized Zebra
reseller.
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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.
NOTE: 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.
NOTE: When canceling a self test prior to its actual completion, always turn
the printer power off and then back on to reset the printer.
NOTE: When performing these self tests while in the Peel-off mode, you
must remove the labels as they become available.
NOTE: 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.