Paper Feed Jam Occurs Right After Paper Feeding Starts (Multi-Purpose Tray) - Oki C3200n Service Manual

(4-2)Paper feed jam occurs right after paper feeding starts (Multi-purpose Tray)

Confirmation Items
(4-2-1)Check a path route
Paper path route for Multi-
purpose Tray
Sheet-Receiver of Multi-
purpose tray
(4-2-2)Confirm condition of mechanical parts
Check sensor levers at the
entrance sensor 2 and WR
sensor lever
Planet gear to control paper
feed
Front Cover
(4-2-3)Confirm condition of the motor operation
Paper Feed Motor
Paper Feed Motor Driver
(4-2-4)Confirm connection systems
Cord to drive a paper feed
motor
Cord to drive a paper feed
motor
Paper Feed Motor
42615101TH Rev.8
Confirmation Tasks
Check paper is not jammed in a path route.
Confirm that Sheet-Receiver is correctly lifted up.
Confirm that there is no abnormality in the shape of the sensor
lever and in the operation.
Confirm that two planet gears rotate at the bottom by rotating a
paper feed motor (FRONT MOTOR) with Motor & Clutch of the
Self-diagnostic Mode. (Planet gear box is a white mold part at
the right side, opening the front cover.)
Confirm both right and left locks of the front cover work well.
Confirm that a paper feed motor operates correctly with Motor &
Clutch test of the Self-diagnostic Mode.
Remove HOPKID connector of the PU board (PRN PCB) and
check the followings at the connector side.
"n"MΩ between 5pin-FG
"n"MΩ between 6pin-FG
"n"MΩ between 7pin-FG
"n"MΩ between 8pin-FG
Check a connection status of the cord.
HOPKID connector of the PU board (PRN PCB).
Check half connection, incomplete plug-in or installation status
of the cord by eyes.
Confirm that a cord is not stuck when installing of the device.
Pull out HOPKID connector of the PU board (PRN PCB) to
check the followings at the cord side.
A short between 5pin-FG
A short between 6pin-FG
A short between 7pin-FG
A short between 8pin-FG
Confirm 3.5Ω of resistance is seen between 5pin-6pin,and 7pin-
8pin each at the cord side after pulling out HOPKID connector of
the PU board (PRN PCB).
Oki Data CONFIDENTIAL
Action at NG
Remove jammed paper.
Adjust Sheet-Receiver
so that it can be lifted
up correctly.
Exchange to a normal
sensor lever.
Exchange a planet
gear box.
Exchange a front unit.
Exchange a PU board
(PRN PCB) or paper
feed motor.
Exchange a PU board
(PRN PCB)
Correct a connection
status.
Exchange it to a normal
cord.
Return the installation
to a right status by
exchanging a cord.
Exchange a paper feed
motor.
205 /