Oki C301 Maintenance Manual

44951501TH Rev.2
7-45
Oki Data CONFIDENTIAL
7. TROUBLESHOOTING
(6-4) Jam occurs immediately after paper has reached the fuser.
Check item Check operation
Actions for NG
results
(6-4-1) Motor operation check
Fuser motor Confirm that the fuser motor works normally
by using the Motor & Clutch Test of the self-
diagnostic mode.
Check if any load exists or not.
Replace the
CU/PU board.
Replace the
fuser motor.
Replace the
fuser unit.
If any attempt of
using new fuser
unit as a trial
is going to be
made, be sure to
use the System
Maintenance
Menu FUSE
KEEP MODE.
(6-4-2) Temperature control of the roller rotation speed
Heat roller detected
temperature
Check the detected temperature of the heat
roller using the self-diagnostic mode. Is
abnormally high temperature or abnormally
temperature detected?
Replace the
fuser unit and the
PU/CU board.
f any attempt
of using new
fuser unit as
a trial is going
to be made,
be sure to use
the System
Maintenance
Menu FUSE
KEEP MODE.
(6-4-3) Check the installation condition of fuser unit
Fuser unit Check that the fuser unit is installed normally.
(Is it pushed in down to the bottom-most point?)
Install the fuser
unit correctly in
a printer.
7.5.2. (7) Paper unloading jam (error code 382)
(7-1) Paper unloading jam occurs immediately after the power is turned on.
Check item Check operation
Actions for NG
results
(7-1-1) Check condition of the paper running path
Paper running
path of the paper
unloading unit
Check if paper is jammed or not in the paper
running path.
Remove the
jammed paper.
(7-1-2) Check condition of the mechanical parts
EXIT sensor lever
check
Check if shape and movement of the sensor
levers have any abnormality or not.
Replace the
sensor lever with
the good sensor
lever.
(7-1-3) Check condition of electrical parts
Check the detection
condition of the
sensor signal.
Confirm that the sensor signals are normally
detected by using the SWITCH SCAN function of
the self-diagnostic mode.
Replace: the
CU/PU board, or
the EXIT sensor
and its cord or
connection cord.
Check the output
signal level of the
EXIT sensor.
Check the following signal by using the CU/PU
board EXIT connector 8:
Pin-9: EXIT sensor
Confirm that the above signal levels change
when the sensor lever is operated.
Replace the
EXIT sensor.
(7-1-4) Check the system connection
EXIT sensor cord
Confirm that the cables are not pinched,
sheathes are not peeled off, and they are
assembled normally.
Replace the
connecting cable
and normalize
the assembled
condition.

Oki C301 Specifications

General

Brand	Oki
Model	C301
Category	Printer
Language	English