Paper Running Jam (Error Code 381:); Jam Occurs Immediately After The Power Is Turned On; Jam Occurs Immediately After A Paper Is Taken Into Printer - Oki MC561 Maintenance Manual

Oki Data CONFIDENTIAL

7.5.4. (6) Paper running jam (error code 381:)

(6-1) Jam occurs immediately after the power is turned on.

Check item
(6-1-1) Check condition of the running path.
Paper running path Check if paper is jammed or not in the paper
of the front unit running path.
(6-1-2) Check condition of the mechanical parts
Check the sensor Check if shape and movement of the sensor
lever of the WR levers have any abnormality or not.
sensor.
(6-1-3) Check condition of electrical parts
Check the detection Confirm that the sensor signals are normally
condition of the detected by using the SWITCH SCAN function of
sensor signal. the self-diagnostic mode.
Check the sensor Check the following signal by using the CU/PU
lever of the WR board RGSNS connector 16:
sensor.
44473001TH Rev.1
Check operation Actions for NG
results
Remove the
jammed paper.
Replace the
sensor lever
with the good
sensor lever.
Replace the
CU/PU board,
or appropriate
sensor(s) or
connection
cord(s).
Replace the
sensor.

(6-2) Jam occurs immediately after a paper is taken into printer.

Check item
(6-2-1) Check condition of the paper running path
Paper running path Remove the ID unit and check if paper is jammed
on the belt. or not in the paper running path.
(6-2-2) Check condition of the mechanical parts
Check the sensor Check if shape and movement of the sensor
lever of the WR levers have any abnormality or not.
sensor.
(6-2-3) Motor operation check
Paper feed motor Confirm that the paper feed motor, belt motor
driver, belt motor and ID motor work normally by using the Motor &
driver and ID motor Clutch Test of the self-diagnostic mode.
Check if any load exists or not.
Paper feed motor, Pull out the CU/PU board BELT connector 1, and
belt motor 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
7. TROUBLESHOOTING PROCEDURES
Check operation Actions for NG
results
Remove the
jammed paper.
Replace the
sensor lever
with the good
sensor lever.
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.
Replace the
CU/PU board.
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