Oki MC860 MFP, Руководство по обслуживанию

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Oki Data CONFIDENTIAL
43967002TH Rev. 1
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7. Troubleshooting
(8-2) Two-sided printing jam occurs during taking in the paper into Duplex unit.
Check item Check work Action to be taken at NG
(8-2-1) Solenoid operation check
Duplex solenoid Confirm that the Duplex solenoid works
normally by using the Motor & Clutch Test
of the self-diagnostic mode. V7Y PCB
replacement or solid
replacement
Separator DUP
(Paper unloading/
DUP paper taking-
in switching gate
located immediately
after the fuser unit) Check visually movement of the gate by
using the Motor & Clutch Test of the self-
diagnostic mode. (EXIT SOLENOID) Check
if movement is unsmooth or not, if amount
of open/close is abnormal or not. Replace the
separator DUP.
ON/OFF timing of
the Duplex solenoid While the cover is in the opened state,
perform the test print and confirm if the
timing to open the separator DUP is correct
or not. Replace the WR
sensor lever or
solenoid.
(8-2-2) Sensor lever operation check
Dup-IN sensor lever Open the rear cover. Touch the Dup-IN
sensor lever to check if its movement is
unsmooth or not. Replace the Dup-IN
sensor lever.
DUP-IN sensor Confirm that the sensor signals are
normally detected by using the SWITCH
SCAN function of the self-diagnostic mode. Replace the Duplex
PCB (V7Y PCB),
or replace the
defective sensor or
connection cable.
(8-2-3) Check condition of the paper running path
Paper inverting
transport path Check that any foreign materials such
as paper chip or blue do not exist that
hampers the smooth movement of paper in
the paper inverting transport path. Remove the foreign
material.
Check item Check work Action to be taken at NG
(8-2-4) Motor operation check
Duplex motor Confirm that the Duplex solenoid works
normally by using the Motor & Clutch Test
of the self-diagnostic mode.
Open the rear cover and check rotation of
the roller. V7Y PCB
replacement or
motor replacement.
Duplex pull-in/
reversing roller and
its pinch roller Check if the pull-in/reversing roller of the
Duplex unit contacts or not with the pinch
roller of the cover side when the Duplex
rear cover is closed. (Does the pinch roller
rotate when the roller is rotating? Rear cover
replacement.
(8-3) Two-sided printing jam occurs in the process of reversing paper.
Check item Check work Action to be taken at NG
(8-3-1) Sensor lever operation check
Dup-IN sensor lever Open the rear cover. Touch the Dup-IN
sensor lever to check if its movement is
unsmooth or not. Replace the Dup-IN
sensor lever.
DUP-IN sensor Confirm that the sensor signals are
normally detected by using the SWITCH
SCAN function of the self-diagnostic mode. Replace the Duplex
PCB (V7Y PCB),
or replace the
defective sensor or
connection cable.
(8-3-2) Motor operation check
Duplex motor Check if the paper reversing operation is
started or not by visual inspection when
viewing through slit of the rear cover.
If the paper reversing operation is not
started, check if movement of the planetary
gear inside the Duplex unit is unsmooth or
not. Replace the
planetary gear.