Oki C710, Руководство по обслуживанию

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43856301TH Rev.3
166 /
Oki Data CONFIDENTIAL
7. Troubleshooting and repair procedure
(6-4) Jam occurs immediately after paper has reached the fuser.
Check item Check work
Action to be taken
at NG
(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 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 fuser
unit, or relay
board (PRY
PCB) or the PU
board.
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.
(6-4-3) 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 work
Action to be taken
at NG
(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
Check the sensor
lever of the paper
exit sensor.
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
PU board or
EXIT sensor or
its cable or its
connection cable.
Check the output
signal level of the
EXIT sensor.
Check for the following signals at the RELAY
connector of the PU board.
Pin-9: EXIT sensor
Confirm that the above signal levels change
when the sensor lever is operated.
Replace the
EXIT sensor.
Check the power
voltages supplied to
the relay board.
Check the 5V power voltage at the EXIT
connector of the relay board.
Pin-1: 5V power supply
Pin-3: 0VL
Replace the
connection cable.