Panasonic KX-P4440 - Manual (Page 119)

5.7 Troubleshooting
Many problems associated with the printer can be traced to improper
setup, installation, or cabling. The error messages shown on the display
(see Table 5.3) and the following tables will assist the user in identifying
and correcting some of the more common problems.
Trouble Possible Cause Corrective Action
Printer dead No AC power Check power cord.
Power on but printer not printing
data
Printer not ON LINE Press ON LINE key.
Interface cable not connected Check interface cable.
Front panel keys not operational Printer not OFF LINE Press ON LINE key.
Paper jam occurs continually Paper size selected by the front
panel or software commands is
different from the installed paper
size
Select the correct paper size
through the front panel or
software commands.
(Refer to page 3-27, refer to
Software Commands Manual.)
Torn paper may be present in
fuser
Remove torn paper.
(Refer to page 5-19.)
Stains on paper Dirty paper path Clean paper path.
(Refer to page 5-12.)
Vertical line on paper Dirty paper path Clean paper path.
(Refer to page 5-12.)
Scratch on drum Replace drum.
Scratch on fuser roller Replace fuser.
Very faint print Print density dial not adjusted Properly adjust the dial.
Abnormal transfer corona current Replace transfer corona.
Developer unit requires
replacement
Install a new developer unit.
(Refer to page 5-8.)
“CALL SERVICE” message
appears on the display, no display
or the printer does not function
properly.
Internal errors If one of these error appears, turn
the power off for a few seconds
then on again. If the error
continues, service by an
Authorized Panasonic Service
Center is required.
Table 5.2 Troubleshooting
Care and Maintenance of Your Laser Printer 5-25