Oki C710, Руководство по обслуживанию

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43856301TH Rev.3
167 /
Oki Data CONFIDENTIAL
7. Troubleshooting and repair procedure
Check item Check work
Action to be taken
at NG
(7-1-4) Check the system connection
Signal cable for relay
board, EXIT sensor
cable
Check that FFC is normally inserted at the
RELAY connector of the PU board and at the
PU IF connector .
Check that the relay board and the EXIT sensor
are normally connected.
Normalize the
connection
condition.
Signal cable for relay
board, EXIT sensor
cable
Confirm that the cables are not pinched,
sheathes are not peeled off, and they are
assembled normally.
Replace the
connecting cable
and normalize
the assembled
condition.
(7-2) Paper unloading jam occurs after a paper is taken into printer.
Check item Check work
Action to be taken
at NG
(7-2-1) Check condition of the paper running path
Face Up Stacker
Cover
Confirm that it is either fully opened or fully
closed
Eliminate any
in-between
condition of the
cover between
the fully open
position and
fully closed
position.
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?
Replace the
Duplex pull-
in gate or the
Duplex solenoid
Rear panel Check that the installation condition of the rear
panel hampers smooth movement of a paper in
the paper running path, or not.
Remove the
rear panel and
re-install it.
Paper running path
of unloading unit
Check that any mechanical load does not exist
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.
Correct the
portion that
becomes
mechanical
load.
Check item Check work
Action to be taken
at NG
(7-2-2) Check condition of the mechanical parts
Sensor lever of the
paper exit sensor
Check if shape and movement of the sensor
levers have any abnormality or not.
Replace the
sensor lever
with the good
sensor lever.
(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.
Replace the 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.
(7-2-4) Check the system connection
Fuser motor drive
cable
Check the connection condition of the cables.
PU board DCHEAT connector , 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.
Replace the
cable with the
good cable
that normalizes
the connection
condition.
Fuser motor Replace the
fuser motor.