Jam Occurs Immediately After The Paper Feed Is Started - Oki B721 Maintenance Manual

Oki Data CONFIDENTIAL
(4-2)

Jam occurs immediately after the paper feed is started.

Check item
(4-2-1) Check condition of the paper running path
Paper running path Check if paper is jammed or not in the paper
of the front unit running path.
(4-2-2) Check condition of the mechanical parts
Check the sensor Check if shape and movement of the sensor
levers of the paper levers have any abnormality or not.
entrance sensor 1,
that of the paper
entrance sensor
2 and that of the
WR2 sensor.
(4-2-3) Motor operation check
Paper feed motor Confirm that the paper feed motor works
normally by using the Motor & Clutch Test of
the self-diagnostic mode.
45487001TH Rev.1
Actions to be taken
Check work
at NG
Remove the
jammed paper.
Replace the
sensor with the
good sensor
lever.
Replace the
PU/CU board,
or replace the
paper feed
motor.
Check item
(4-2-4) Check the system connection
Paper feed motor Check the connection condition of the cable.
drive cable 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.
Check also that cables are assembled without
any abnormality.
6. Troubleshooting procedure
Actions to be taken
Check work
at NG
Replace the
cable with the
good cable
that normalizes
the connection
condition.
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