Two-Sided Printing Jam Occurs During Taking In The Paper Into Duplex Unit; Two-Sided Printing Jam Occurs In The Process Of Reversing Paper - Toshiba e-STUDIO477S Service Manual

(8-2) Two-sided printing jam occurs during taking in the paper into Duplex unit.

Check item
(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.
Separator DUP Check visually movement of the gate by using
(Paper unloading/ the Motor & Clutch Test of the self-diagnostic
DUP paper taking- mode. (EXIT SENSOR)
in switching gate Check if movement is unsmooth or not, if amount
located immediately of open/close is abnormal or not.
after the fuser unit)
ON/OFF timing of While the cover is in the opened state, perform
the Duplex solenoid the test print and confirm if the timing to open
the separator DUP is correct or not.
(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.
DUP-IN sensor Confirm that the sensor signals are normally
detected by using the SWITCH SCAN function of
the self-diagnostic mode.
(8-2-3) Check condition of the paper running path
Paper inverting Check that any foreign materials such as paper
transport path chip or blue do not exist that hampers the
smooth movement of paper in the paper inverting
transport path.
45387101TH Rev.1
Action to be taken
Check work
at NG
Replace the
Duplexunit.
Replace the
Duplexunit.
Replace the WR
sensor lever or
solenoid.
Replace the
Duplexunit.
Replace the
Duplexunit.
Remove the
foreign material.
Check item
(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.
Duplex pull-in/ Check if the pull-in/reversing roller of the Duplex
reversing roller and unit contacts or not with the pinch roller of the
its pinch roller cover side when the Duplex rear cover is closed.
(Does the pinch roller rotate when the roller is
rotating?)

(8-3) Two-sided printing jam occurs in the process of reversing paper.

Check item
(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.
DUP-IN sensor Confirm that the sensor signals are normally
detected by using the SWITCH SCAN function of
the self-diagnostic mode.
(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.
6. Troubleshooting and repair procedure
Action to be taken
Check work
at NG
Replace the
Duplexunit.
Replace the
Duplexunit.
Action to be taken
Check work
at NG
Replace the
Duplexunit.
Replace the
Duplexunit.
Replace the
Duplexunit.
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