Paper Unloading Jam Occurs After A Paper Is Taken Into Printer - Oki MC860 Maintenance Manual

Oki Data CONFIDENTIAL
Check item
(7-1-4) Check the system connection
Signal cable for Check that FFC is normally inserted at the
motor driver PCB, RELAY connenctor
EXIT sensor cable the PUIF connector
or Fuser IN sensor PCB).
cable Check that cables are normally inserted
at the RELAY PCB (P6Y. PCB) and EXIT
sensor, Fuser IN sensor cable.
Signal cable for Confirm that the cables are not pinched,
motor driver PCB, sheathes are not peeled off, and they are
EXIT sensor cable assembled normally.

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

Check item
(7-2-1) Check the condition of the paper running path
Face Up Stacker Confirm that it is either fully opened or fully
Cove 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
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
of unloading unit exist that hampers the smooth movement of
paper in the paper running path of the paper
unloading unit, by the visual inspection.
43967002TH Rev. 1
Check work Action to be taken at NG
Normalize the
of PU PCB, and at connection
of RELAY PCB (P6Y condition.
Replace the
connecting cable
and normalize the
assembled condition.
Check work Action to be taken 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
paper exit sensor 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 extra load exists or not.
(7-2-4) Check the system connection
Fuser motor drive Check the connection condition of the
cable cables.
Check if 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
Check work Action to be taken at NG
Replace the sensor
lever with the good
sensor lever.
Replace the PU
PCB 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.
Normalize the
connection
condition.
Replace the cable
with the normal
cable.
Replace the fuser
motor.
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