Oki Data CONFIDENTIAL
43827101TH Rev.2
211 /
(7-3)Duplex print jam occurs in reverse of the paper
Dup-IN sensor lever
Dup-In sensor
Duplex motor
Confirmation Tasks
Open the rear cover and touch the Dup-IN sensor lever by
hand. Check to see if its motion is stiff.
Use the SWITCH SCAN function of the self-diagnostic mode to
check to see if the sensor signals are detected normally.
Check visually to see if the paper has started reversal motion
from the slit of the rear cover.
If the reversal motion has not been started, check to see if the
planetary gear in the duplex unit is stiff.
Action at NG
Replace the Dup-IN
sensor lever.
Replace the duplex
PCB, sensor or
connection cord.
Replace the planetary
gear.
(7-3-1) Check of operating state of sensor lever
(7-3-2) Check of operating state of motor
Confirmation Items
Duplex motor
Duplex intake/reversal roller
and its pinch roller
Confirmation Tasks
Conduct the Motor and Clutch Test of the self-diagnostic mode,
and check the operation of the duplex motor.
Make this checking by the rotation of the rollers, which are
visible as the rear cover is opened.
Check to see if the intake/reversal roller on the duplex unit side
comes into contact with the pinch roller on the cover side when
the rear cover of the duplex is closed (Is the pinch roller also
rotating when the duplex roller is turning?)
Action at NG
Replace the duplex
PCB or the motor.
Replace the rear cover.
(7-2-4) Check of operating state of motor
Confirmation Items
(7-4)Duplex print jam occurs in the Duplex input
Dup-F sensor levers
Check the state of sensor
signal defection.
Confirmation Tasks
Remove the Duplex, and check the motions of the sensor
levers.
Use the SWITCH SCAN function of the self-diagnostic mode to
check to see if the sensor signals are detected normally. Except
for the Dup-In sensor, check the state of signal detection in two
cases: With a sheet of paper placed inside the duplex unit and
with the paper removed.
Action at NG
Replace the sensor
levers.
Replace the duplex
PCB, corresponding
sensor or connection
cord.
(7-4-1) Check of operating state of sensor levers
(7-4-2) Check of sensors
Confirmation Items
