Paper Unloading Jam Occurs In The Middle Of Paper Running Path; Two-Sided Printing Jam (Error Code: 370, 371, 372, 373, 383); Two-Sided Printing Jam Occurs Immediately After The Power Is Turned On - Oki C711 Maintenance Manual

Oki Data CONFIDENTIAL

(7-3) Paper unloading jam occurs in the middle of paper running path.

Check item
(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 load exists or not.
44205401TH Rev.1
Action to be taken
Check work
at NG
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
(8-1-1) Check condition of the paper running path
Paper running path Check if paper is jammed or not in the paper
of the Duplex unit 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.
(8-1-2) Check condition of the mechanical parts
Check the sensor Check if shape and movement of the sensor
levers of the levers have any abnormality or not.
respective sensors
of the Duplex unit.
(8-1-3) Check condition of electrical parts
Check the detection Confirm that the sensor signals are normally
condition of the detected by using the SWITCH SCAN function of
sensor signal. 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.
7. Troubleshooting and repair procedure
Action to be taken
Check work
at NG
Remove the
jammed paper.
Replace the
sensor lever with
the good sensor
lever.
Replace the
Duplex board
(V7Y PCB),
or replace the
defective sensor
or connection
cable.
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