Oki Data CONFIDENTIAL
43967002TH Rev. 1
338 /
7. Troubleshooting
(8-4) Two-sided printing jam occurs during transporting paper inside the Duplex unit.
Check item
Check work
Action to be taken at NG
(8-4-1) Sensor lever operation check
Dup-R, Dup-F
sensor lever
Remove the Duplex unit and check
movement of the sensor lever
Sensor lever
replacement
(8-4-2) Sensor check
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.
(8-5) Paper is not supplied from the Duplex unit to the regist roller.
Check item
Check work
Action to be taken at NG
(8-5-1) Sensor lever operation check
Duplex clutch
Confirm that the Duplex clutch works
normally by using the Motor & Clutch Test
of the self-diagnostic mode.
Confirm it by listening to the sound.
V7Y PCB
replacement or
clutch replacement.
7.5.2.(9) Paper size error (error code 400)
(9-1) Jam occurs when paper end is located near the IN1 sensor.
Check item
Check work
Action to be taken at NG
(9-1-1) Check paper feed condition
Multifeed of papers
Open the front cover and check if multifeed
of papers occurs or not.
If the multifeed
occurs again after
the jammed paper
is removed, replace
the flap of the tray in
use.
Paper size
Does the paper size specified for print
match the paper size of paper stuck in the
tray.
Change the
specified paper size
or size of paper
inside the tray.
Paper entrance
sensor 1
Check if shape and movement of the
sensor levers have any abnormality or not.
Replace the sensor
lever with the good
sensor lever.
