45530603TH Rev.2
4-65
Oki Data CONFIDENTIAL
4. TROUBLESHOOTING PROCEDURE
Check item Check work
Actions to be taken
at NG
(5-2-4) Check the system connection
Hopping motor
drive cable
Check the connection condition of the cable.
Visually 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.
Also check that cables are assembled without
any abnormality.
Normalize the
connection
condition.
Replace with a
normal cable.
Hopping motor
drive cable
Check that any cable is not pinched during
assembling of the printer.
Remove the HOPM connector of the PU/CU
PCB and check the following at the cable side.
Short circuit between pin-1/-2/-3/-4 and FG
Replace the
cable and
normalize the
assembled
condition.
Hopping motor Remove the HOPM connector of the PU/CU
PCB and check that a resistance of 10
:
or
less can be measured between pin-1 and pin-
2 and pin-3 and pin-4 respectively at the cable
side.
Replace the
hopping motor.
4.5.2.(6) Paper feed jam (Error 390: MP Tray)
(6-1) Jam occurs immediately after paper feed is started. (Multipurpose tray)
Check item Check work
Actions to be taken
at NG
(6-1-1) Check condition of the paper running path
Paper running path
of the multipurpose
tray
C heck if paper is jammed or not in the paper
running path.
Remove the
jammed paper.
Sheet Receive of
the multipurpose
tray
C onfirm that the Sheet Receive has moved
up normally.
Confirm that the support spindle and spring of
the Sheet Receive have been installed in the
specified positions normally.
Correct installa-
tion of the above
parts so that the
Sheet Receive
moves up to the
specified posi-
tion normally.
(6-1-2) Check condition of the mechanical parts
Check the sensor
levers of the paper
entrance sensor 2
Check if shape and movement of the sensor
levers have any abnormality or not.
Replace with a
normal sensor
lever.
Right side cover Confirm that the locks in the right and left of
the right side cover are locked normally.
Replace the
Right side
cover assembly
Check the feed
roller, the pickup
roller, and the
retard roller.
Check if any foreign materials such as paper
dust on the surface of the feed roller or of the
pickup roller or not.
Remove the
foreign material.
Check if the feed roller has worn out or not. Replace the
feed roller.
To Next Page
Loading...
