Oki Data CONFIDENTIAL
45850101TH Rev.1
2-51
2. TROUBLESHOOTING PROCEDURES
Check item
Check work
Actions to be taken
at NG
(3-2-2-4) Check the system connection
Hopping motor
drive cable
Check the connection condition of the cable.
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.
Hopping motor
drive cable
Check that any cable is not pinched during
assembling of the printer.
Remove the MOTERCL connector of the CU/
PU board and check the following at the cable
side.
Short circuit between pin-5 – FG
Short circuit between pin-6 – FG
Short circuit between pin-7 – FG
Short circuit between pin-8 – FG
Replace the
cable with the
good cable
that normalizes
the connection
condition.
Hopping motor
Remove the MOTERCL connector of the CU/
PU board and check that approx. 3.4
Ω
can
be measured between pin-5 -pin-6 and pin-7
-pin-8 respectively at the cable end.
Replace the
hopping motor.
(3-2-3) Paper unloading jam occurs after a paper is taken into printer.
Check item
Check work
Actions to be taken
at NG
(3-2-3-1) 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.
(3-2-3-2) Check condition of the mechanical parts
Sensor lever of the
exit sensor and that
of the exit2 sensor
Check if shape and movement of the sensor
levers have any abnormality or not.
Replace the
sensor lever with
the good sensor
lever.
(3-2-3-3) 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 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.
