Jam Occurs Immediately After A Paper Is Taken Into Printer - Oki MC362w Maintenance Manual

Oki Data CONFIDENTIAL

(6-2) Jam occurs immediately after a paper is taken into printer.

Check item
(6-2-1) Check condition of the paper running path
Paper running path Remove the ID unit and check if paper is
on the belt. jammed or not in the paper running path.
(6-2-2) Check condition of the mechanical parts
Check the sensor Check if shape and movement of the sensor
lever of the WR levers have any abnormality or not.
sensor.
(6-2-3) Motor operation check
Paper feed motor Confirm that the paper feed motor, belt
driver, belt motor motor and ID motor work normally by
driver and ID motor using the Motor & Clutch Test of the self-
diagnostic mode.
Check if any load exists or not.
Paper feed motor, Pull out the CU/PU board BELT connector
③
belt motor
, 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
①
, 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
44952001TH Rev.2
Checking method Action in case of NG
Remove the jammed
paper.
Replace the sensor
lever with the good
sensor lever.
Feed motor driving
cord, image drum
motor driving cord,
belt motor, fuser
driving cord
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.
Check item Checking method
(6-2-4) Check the system connection
Feed motor driving Check the connection condition of the
cord, image drum cables.
motor driving cord, CU/PU board HOP connector
belt motor, fuser connector , DCHEAT connector
③
driving cord connector .
Check if the connector is connected in
the half-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
cord, image drum assembling of the printer.
motor driving cord, Pull out the CU/PU board BELT connector
③
belt motor driving , and check the following at the sides of
cord 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
Pull out the CU/PU board HOP connector
①
, 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
motor the board, and confirm that the following
resistance exists between the corresponding
pins, at the cable side.
CU/PU board HOP connector
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
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 .
7. TROUBLESHOOTING PROCEDURES
Action in case of NG
Normalize the
connection condition.
①
, DC ID Replace the cable with
, BELT the normal cable.
Replace the cable
with the good cable
that normalizes the
connection condition.
Replace paper feed
motor, belt motor, ID
Up motor.
①
③
7-69