Paper Unloading Jam Occurs After A Paper Is Taken Into Printer - Oki C711 Maintenance Manual

Oki Data CONFIDENTIAL
Check item
(7-1-4) Check the system connection
Signal cable for relay Check that FFC is normally inserted at the
board, EXIT sensor RELAY connector
cable the PU IF connector
Check that the relay board and the EXIT sensor
are normally connected.
Signal cable for relay Confirm that the cables are not pinched, sheathes
board, EXIT sensor are not peeled off, and they are assembled
cable normally.

(7-2) Paper unloading jam occurs after a paper is taken into printer.

Check item
(7-2-1) Check condition of the paper running path
Face Up Stacker Confirm that it is either fully opened or fully
Cover closed
Duplex pull-in gate Confirm that the Duplex pull-in gate works
normally by using the Motor & Clutch Test of the
self-diagnostic mode.
Is it set to the paper unloading side normally?
Rear panel Check that the installation condition of the rear
panel hampers smooth movement of a paper in
the paper running path, or not.
Paper running path Check that any mechanical load does not exist
of unloading unit that hampers the smooth movement of paper in
the paper running path of the paper unloading
unit, by the visual inspection.
Check if the paper unloading motor becomes
difficult to rotate or not.
44205401TH Rev.1
Action to be taken
Check work
at NG
Normalize the
of the CU/PU board and at connection
. condition.
Replace the
connecting cable
and normalize
the assembled
condition.
Action to be taken
Check work
at NG
Eliminate any
in-between
condition of the
cover between
the fully open
position and fully
closed position.
Replace the
Duplex pull-
in gate or the
Duplex solenoid
Remove the rear
panel and re-
install it.
Correct the
portion that
becomes
mechanical load.
Check item
(7-2-2) Check condition of the mechanical parts
Sensor lever of the Check if shape and movement of the sensor
paper exit sensor levers have any abnormality or not.
(7-2-3) Motor operation check
Fuser motor Confirm that the fuser motor works normally
by using the Motor & Clutch Test of the self-
diagnostic mode.
Check if any load exists or not.
(7-2-4) Check the system connection
Fuser motor drive Check the connection condition of the cables.
cable CU/PU board DCHEAT connector
the connector is connected in the half-way only
or not, and check if the connector is inserted in a
slanted angle or not. Check also that cables are
assembled without any abnormality.
Fuser motor
7. Troubleshooting and repair procedure
Action to be taken
Check work
at NG
Replace the
sensor lever with
the good sensor
lever.
Replace the
CU/PU board or
fuser motor or
fuser unit.
If any attempt of
using new fuser
unit as a trial
is going to be
made, be sure to
use the System
Maintenance
Menu FUSE
KEEP MODE.
Replace the
, Check if cable with the
good cable
that normalizes
the connection
condition.
Replace the
fuser motor.
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