44346001TH Rev.1
166 /
Oki Data CONFIDENTIAL
7. TROUBLESHOOTING
7.5.2. (6) Paper running jam (error code 381:)
(6-1) Jam occurs immediately after the power is turned on.
Check item
Check operation
Actions for NG
results
(6-1-1) Check condition of the running path.
Paper running path
of the front unit
Check if paper is jammed or not in the paper
running path.
Remove the
jammed paper.
(6-1-2) Check condition of the mechanical parts
Check the sensor
lever of the WR
sensor.
Check if shape and movement of the sensor
levers have any abnormality or not.
Replace the
sensor lever
with the good
sensor lever.
(6-1-3) 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 appropriate
sensor(s) or
connection
cord(s).
Check the sensor
lever of the WR
sensor.
Check the following signal by using the CU/
PU board RGSNS connector 16:
Replace the
sensor.
(6-2) Jam occurs immediately after a paper is taken into printer.
Check item
Check operation
Actions for NG
results
(6-2-1) Check condition of the paper running path
Paper running path
on the belt.
Remove the ID unit and check if paper is
jammed or not in the paper running path.
Remove the
jammed paper.
(6-2-2) Check condition of the mechanical parts
Check the sensor
lever of the WR
sensor.
Check if shape and movement of the sensor
levers have any abnormality or not.
Replace the
sensor lever with
the good sensor
lever.
Check item
Check operation
Actions for NG
results
(6-2-3) Motor operation check
Paper feed motor
driver, belt motor
driver and ID motor
Confirm that the paper feed motor, belt motor
and ID motor work normally by using the Motor
& Clutch Test of the self-diagnostic mode.
Check if any load exists or not.
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.
Paper feed motor,
belt motor
Pull out the CU/PU board BELT connector
1, 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 3, 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
Replace the
CU/PU board.