4) Feed Jam (Error Code 380); Feed Jam (Error Code 380); Jam Occurs Immediately After The Power Is Turned On; Jam Occurs Immediately After The Paper Feed Is Started - Oki C810 Maintenance Manual

Oki Data CONFIDENTIAL
7.5.2.(4)

Feed jam (error code 380)

(4-1) Jam occurs immediately after the power is turned on.

Check item
(4-1-1) Check condition of the paper running path
Paper running path Open the front cover check if paper is not
of the front unit jammed in the paper running path.
(4-1-2) 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 WR
sensor.
(4-1-3) Check condition of electrical parts
Check the detection Confirm that the sensor signals are normally
condition of the detected by using the Maintenance Menu
sensor signal. SWITCH SCAN function.
Check the output Check for the following signals at the FSNS
signal levels of the connector
paper entrance
Pin-4: Paper entrance sensor 1
sensor 1, that of
Pin-3: Paper entrance sensor 2
the paper entrance
Pin-2: WR sensor
sensor 2 and that of
Confirm that the above signal levels change
the WR sensor.
when the sensor lever is operated.
Check the power Check the 5v power at the FSNS connector
voltages supplied of the front sensor board (RSF PCB).
to the front sensor
Pin-1: 5v power supply
board (RSF PCB)
Pin-5: 0vL
44015503TH Rev. 1
Action to be taken
Check work
Remove the
jammed paper.
Replace the
sensor with the
good sensor
lever.
Replace either
the PU board
or the front
sensor board
(RSF PCB)
or connection
cable.
Replace the
of the PU board. front sensor
board (RSF
PCB)
Replace the
connection
cable.

(4-2) Jam occurs immediately after the paper feed is started.

Check item
(4-2-1) Check condition of the paper running path
at NG
Paper running path
of the front unit
(4-2-2) Check condition of the mechanical parts
Check the sensor
levers of the paper
entrance sensor 1,
that of the paper
entrance sensor 2
and that of the WR
sensor.
(4-2-3) Motor operation check
Paper feed motor
Paper feed motor
driver
7. TROUBLESHOOTING PROCEDURE
Check work
Check if paper is jammed or not in the paper
running path.
Check if shape and movement of the sensor
levers have any abnormality or not.
Confirm that the paper feed motor works
normally by using the Motor & Clutch Test of the
self-diagnostic mode.
Remove the HOPSIZE connector of the PU
board and check the followings at the connector
side.
Several MΩ between pin-1 – FG
Several MΩ between pin-2 – FG
Several MΩ between pin-3 – FG
Several MΩ between pin-4 – FG
Action to be taken
at NG
Remove the
jammed paper.
Replace the
sensor with the
good sensor
lever.
Replace the PU
board, or replace
the paper feed
motor.
Replace the PU
board.
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