Oki Data CONFIDENTIAL
43827101TH Rev.2
210 /
7.5.2.(7)
Duplex Print Jam(Error 370,371,372,373,383)
(7-1)Duplex print jam occurs right after turning on the power
Paper running route in duplex
unit
Check the sensor levers of
the sensors of duplex.
Check the state of sensor
signal detection.
Confirmation Tasks
Check to see if there is paper jammed on the running route.
Open the front cover and see if there is paper jammed in the
middle of feeding through the duplex. Open the rear cover and
see if there is paper jammed in the reversal path.
Draw out the duplex and see if there is paper jammed at the
insertion inlet to the Duplex. Open the running path cover of the
Duplex and see if there is paper jammed inside.
Check to see if the sensor levers demonstrate any abnormal
shape or motion.
Use the SWITCH SCAN function of the self-diagnostic mode to
check to see if the sensor signals are detected normally.
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
Remove the jammed
paper.
Replace the sensor
lever with a normal
one.
Replace the duplex
PCB, sensors or
connection cord.
(7-1-1) Check of state of running route
(7-1-2) Check of state of mechanical parts
(7-1-3) Check of electrical parts
Confirmation Items
(7-2)Duplex print jam occurs in the Duplex entry
Duplex solenoid
Separator DUP
(Delivery/DUP-intake
switching gate located
immediately after fuser unit)
On/off timing of duplex
solenoid
Dup-IN sensor lever
Dup-IN sensor
Reversal transport path
Confirmation Tasks
Conduct the Motor and Clutch Test of the self-diagnostic mode,
and check the operating state of the Duplex solenoid.
Conduct the Motor and Clutch Test of the self-diagnostic mode,
and check visually the motion of the gate (EXIT SOLENOID).
See if its motion is stiff, or its amount of opening/closing is
abnormal.
Conduct test print with the cover open, and see if the separator
DUP opens at the right timing.
Open the rear cover, touch the Dup-IN sensor lever by hand,
and 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 to see if there are paper chips, burrs or any other foreign
matters in the reversal transport path that obstruct the running
of paper.
Action at NG
Replace the duplex
PCB or solenoid.
Replace the separator
DUP.
Replace the WR
sensor lever or
solenoid.
Replace the Dup-IN
sensor lever.
Replace the duplex
PCB, sensors or
connection cord.
Remove the foreign
matters.
(7-2-2) Check of operating state of sensor lever
(7-2-1) Check of operating state of solenoid
(7-2-3) Check of state of running route
Confirmation Items