Zebra Technologies Zebra Z4000 - Manual (Page 45)

Power On Self-Test
A Power On Self Test (POST) is performed each time the printer is
turned ON. During this test, the front panel LEDs will turn ON and
OFF to ensure proper operation. At the end of this self test, only the
POWER LED will remain lit.
Once the Power ON Self Test is complete, the media is advanced to the
proper rest position as determined by the programmed media feed set-
ting. Continuous media is assumed to be at the proper rest position.
Troubleshooting Tables
The following tables provide trouble symptoms, a diagnosis of specific
causes and a recommended action which should result in proper printer
operation.
Z Series™ User’s Guide 37
Troubleshooting
SYMPTOM DIAGNOSIS ACTION
All LEDs never light. No AC Power applied to
the printer.
Ensure the AC Power
cable is connected to
a working voltage
source.
Faulty AC Power Fuse. Refer to Appendix C for
Fuse replacement
procedures.
No voltage available
from the internal power
supply.
Call a Service
Technician.
Printer locks up when
running the Power On
Self Test with some or
all LEDs ON.
Printer not configured
properly.
Refer to the PAUSE and
FEED Key Self Test and
reload factory defaults;
then reconfigure the
printer for the
application.
Internal printer failure. Call a Service
Technician.
Table 2. Power ON Troubleshooting
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Thu Jun 18 16:02:05 1998
Color profile: Disabled
Composite Default screen