Oki C810 Maintenance Manual page 188

Oki Data CONFIDENTIAL
Confirmation Items
(8-2-4) Check of operating state of motor
Duplex motor 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.
Duplex intake/ Check to see if the intake/reversal roller on the
reversal roller and duplex unit side comes into contact with the
its pinch roller 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?)
(8-3) Duplex print jam occurs in reverse of the paper
Confirmation Items
(8-3-1) Check of operating state of sensor lever
Dup-IN sensor lever Open the rear cover and touch the Dup-IN
sensor lever by hand. Check to see if its motion
is stiff.
Dup-In sensor Use the SWITCH SCAN function of the self-
diagnostic mode to check to see if the sensor
signals are detected normally.
(8-3-2) Check of operating state of motor
Duplex motor 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.
44072903TH Rev.1
Confirmation Tasks Action at NG
Replace the
V7Y PCB or the
motor.

Replace the rear
cover.
Confirmation Tasks Action at NG

R eplace the
Dup-IN sensor
lever.
Replace the
duplex PCB
(V7Y PCB),
sensor or con-
nection cord.
Replace the
planetary gear.
(8-4) Duplex print jam occurs in the Duplex input
Confirmation Items
(8-4-1) Check of operating state of sensor levers
Dup-R and Dup-F
sensor levers
(8-4-2) Check of sensors
Check the state
of sensor signal
defection.

7. TROUBLESHOOTING PROCEFRURES
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.

R eplace the
duplex PCB
(V7Y PCB),
corresponding
sensor or conn-
ection cord.
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