Jam Occurs In The Middle Of Paper Running Path - Oki C310dn Maintenance Manual

Oki Data CONFIDENTIAL
Check item
(6-2-4) Check the system connection
Feed motor driving Check the connection condition of the cables.
CU/PU board HOP connector 12, DC ID
cord, image drum
connector
motor driving cord,
connector 3.
belt motor, fuser
Check if the connector is connected in the half-
driving cord
way only or not, and check if the connector is
inserted in a slanted angle or not.
Check also that cables are assembled without
any abnormality.
Feed motor driving Check that any cable is not pinched during
assembling of the printer.
cord, image drum
Pull out the CU/PU board BELT connector 3, and
motor driving cord,
check the following at the sides of the cords:
belt motor driving
Short circuit between pin-1 – FG
cord Short circuit between pin-2 – FG
Short circuit between pin-3 – FG
Short circuit between pin-4 – FG
Pull out the CU/PU board HOP connector, and
check the following at the side of the cords:
Short circuit between pin-1 – FG
Short circuit between pin-2 – FG
Short circuit between pin-3 – FG
Short circuit between pin-4 – FG
Feed motor, belt Remove the respective connectors from the board,
and confirm that the following resistance exists
motor
between the corresponding pins, at the cable side.
CU/PU board HOP connector 1
Between pin-1-pin-2 Approx. 3.4 or approx. 5 .
Between pin-3-pin-4 Approx. 3.4 or approx. 5 .
CU/PU board BELT connector 3
Between pin-1-pin-2 Approx. 6.1 or approx. 3.5 .
Between pin-3-pin-4 Approx. 6.1 or approx. 3.5 .
Between pin-5-pin-6 Approx. 3.4 or approx. 5 .
Between pin-7-pin-8 Approx. 3.4 or approx. 5 .
44346001TH Rev.1
Check operation Actions for NG
Normalize the
connection
, DCHEAT connector , BELT
condition.
Replace the
cable with the
normal cable.
Replace the
cable with the
good cable
that normalizes
the connection
condition.
Replace paper
feed motor, belt
motor, ID Up
motor.

(6-3) Jam occurs in the middle of paper running path.

results
Check item
(6-3-1) Motor operation check
Paper feed motor
driver, belt motor
driver and ID motor
Paper feed motor,
belt motor
Check operation
Confirm that the paper feed motor, belt motor
and ID motor work normally by using the Motor
& Clutch Test of the self-diagnostic mode.
Check if any load exists or not.
Pull out the CU/PU board BELT connector
1, and check the following at the side of the
connector:
Several M between Pin 1 and frame ground
Several M between Pin 2 and frame ground
Several M between Pin 3 and frame ground
Several M between Pin 4 and frame ground
Pull out the CU/PU board HOP connector 3, and
check the following at the side of the connector:
Several M between pin-1 – FG
Several M between pin-2 – FG
Several M between pin-3 – FG
Several M between pin-4 – FG
7. TROUBLESHOOTING
Actions for NG
results
Replace: the
CU/PU board;
the feed motor,
the belt motor
and the image
drum motor; or
the image drum
unit and the belt
unit.
If any attempt
of using new
ID unit or new
belt unit as a
trial is going
to be made,
be sure to use
the System
Maintenance
Menu FUSE
KEEP MODE.
Replace the
CU/PU board
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