Jam Occurs Immediately After The Paper Feed Is Started; Paper Feed Jam (Error Code 390: Multipurpose Tray); Jam Occurs Immediately After The Power Is Turned On; (Multipurpose Tray) - Oki C310dn 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 of Check if paper is jammed or not in the paper
the front unit running path.
(4-2-2) Check condition of the mechanical parts
Hopping sensor, Check the sensor lever shapes and operations
IN sensor and WR for any problem
sensor lever check
(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.
Paper feed motor Pull out the CU/PU board HOP connector
driver 1, 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
(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.
Paper feed motor Check that any cable is not pinched during
drive cable assembling of the printer.
Pull out the CU/PU board HOP connector 1,
and check the following at side of the cord:
Short circuit between pin-1 – FG
Short circuit between pin-2 – FG
Short circuit between pin-3 – FG
Short circuit between pin-4 – FG
Paper feed motor
Pull out the CU/PU board HOP connector 1,
and check whether there is a resistance of
approximately 3.4 or 5 between the pins 1
and 2, and between the pins 3 and 4, at the
cord side.
44346001TH Rev.1
Check operation Actions for NG
results
Remove the
jammed paper.
Replace the
sensor lever(s)
with proper
one(s).
Replace the CU/
PU board or the
feed motor.
Replace the
CU/PU board.
Replace the
cable with the
good cable
that normalizes
the connection
condition.
Replace the
cable with the
good cable
that normalizes
the connection
condition.
Replace the
paper feed motor.

7.5.2. (5) Paper feed jam (error code 390: Multipurpose tray)

(5-1) Jam occurs immediately after the power is turned on. (Multipurpose tray)
Check item
(5-1-1) Check condition of the paper running path
Paper running path Check if paper is jammed or not in the paper
of the multipurpose running path.
tray
(5-1-2) Check condition of the mechanical parts
IN sensor and WR Check the sensor lever shapes and operations
sensor lever check for any problem
(5-1-3) 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
sensor signal. of the self-diagnostic mode.
In sensor and WR Check the following signals by using the CU/
sensor output level PU board RGSNS connector 16:
check Pin 2: WR sensor
Pin 5: IN sensor
Confirm that the above signal levels change
when the sensor lever is operated.
7. TROUBLESHOOTING
Check operation Actions for NG
results
Remove the
jammed paper.
Replace the
sensor lever(s)
with proper
one(s)
Replace the
CU/PU board,
or appropriate
sensor(s) or
connection
cord(s).
Replace the
connection
cable.
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