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Care and Maintenance
If you can’t make a print:
The page is completely
blank.
The problem could be
with one of the
following:
• Engine control
board.
• Developer voltage.
• Laser scanning unit
mirror.
Turn the printer off
and back on again. If
the problem persists,
call for service on
your printer.
Service Error is
displayed on the LCD.
An error occurred that
is not user-
correctable.
Turn the printer off
and back on again. If
the error persists, call
for service.
Trouble Corrective Action
Printer not operating. Make sure that you plugged in the printer and
turned it on.
Make sure that you connected the interface
cable(s) properly.
More info to come for
these messages.
If the communication link between your
computer and the printer is working but the
printer ejects a blank page when printing from
your application or through Windows. Make
sure that the appropriate driver is installed and
that you have selected the printer correctly.
Trouble Possible Cause Corrective Action
The setting for printing
is not effective.
Some applications
may not allow you to
change the settings
through the
KX-P8420 printer
driver’s setting
window.
Change the
application’s settings.
Trouble Possible Cause Corrective Action