Oki Data CONFIDENTIAL
43967002TH Rev. 1
336 /
7. Troubleshooting
(7-3) Paper unloading jam occurs in the middle of paper running path.
Check item Check work
Action to be taken at NG
(7-3-1) 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.
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.
7.5.2.(8) Two-sided printing jam (error code: 370, 371, 372, 373, 383)
(8-1) Two-sided printing jam occurs immediately after the power is turned on.
Check item Check work
Action to be taken at NG
(8-1-1) Check the condition of the paper running path
Paper running path
of the Duplex unit
Check if paper is jammed or not in the
paper running path.
Open the front cover and check if any
paper remains in the Duplex feeder or not.
Open the rear cover and check if any paper
remains in the paper reversing path or not.
Remove the Duplex unit. Check if any
paper exists in the Duplex insertion slot or
not. Open the cover of the Duplex paper
running path and check if any paper
remains inside of the Duplex unit.
Remove the
jammed paper.
(8-1-2)
Check condition of the mechanical par
ts
Check the sensor
levers of the
respective sensors
of the Duplex unit.
Check if shape and movement of the
sensor levers have any abnormality or not.
Replace the sensor
lever with the good
sensor lever.
(8-1-3) Check condition of electr
ical parts
Check the detection
condition of the
sensor signal.
Confirm that the sensor signals are
normally detected by using the SWITCH
SCAN function of the self-diagnostic mode.
For all sensors except the Dup-IN sensor,
check the detection condition of the
respective sensor in the two status: One is
the status in which paper remains inside
the Duplex unit. The other is the status in
which paper is removed from the Duplex
unit.
Replace the Duplex
PCB (V7Y PCB),
or replace the
defective sensor or
connection cable.