Duplex Print Jam Occurs In Reverse Of The Paper; Duplex Print Jam Occurs In The Duplex Input; Paper Is Not Fed To A Resist Roller From Duplex Section - Oki c5550 Maintenance Manual

Confirmation Items
(7-2-4) Check of operating state of motor
Duplex motor
Duplex intake/reversal
roller and its pinch roller

(7-3) Duplex print jam occurs in reverse of the paper

Confirmation Items
(7-3-1) Check of operating state of sensor lever
Dup-IN sensor lever
Dup-In sensor
(7-3-2) Check of operating state of motor
Duplex motor

(7-4) Duplex print jam occurs in the Duplex input

Confirmation Items
(7-4-1) Check of operating state of sensor levers
Dup-R and Dup-F sensor
levers
(7-4-2) Check of sensors
Check the state of sensor
signal defection.
(7-5) Paper is not fed to a Regist roller from Duplex section
Confirmation Items
(7-5-1) Check the operational condition of the clutch
Duplex clutch
44158801TH Rev.2
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?)
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.
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.
Confirmation Tasks
Conduct the Motor and Clutch Test of the self-diagnostic
mode, and check the operation of the duplex clutch.
Oki Data CONFIDENTIAL
Action at NG
Replace the V7Y
PCB or the motor.
Replace the rear
cover.
Action at NG
Replace the Dup-IN
sensor lever.
Replace the duplex
PCB (V7Y PCB),
sensor or connection
cord.
Replace the
planetary gear.
Action at NG
Replace the sensor
levers.
Replace the duplex
PCB (V7Y PCB),
corresponding
sensor or connection
cord.
Action at NG
Replace the V7Y
PCB or the clutch.
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