44205401TH Rev.1
170 /
Oki Data CONFIDENTIAL
7. Troubleshooting and repair procedure
(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 w
orks 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.
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 condition of the paper running path
Paper running path
of the Duple
x 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 parts
Check the sensor
levers of the
respective sensors
of the Duple
x unit.
Chec
k 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 electrical parts
Check the detection
condition of the
sensor signal.
Confir
m that the sensor signals are normally
d
etected 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 board
(V7Y PCB),
or replace the
defective sensor
or connection
cable.
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