Oki Data CONFIDENTIAL
45850101TH Rev.1
2-50
2. TROUBLESHOOTING PROCEDURES
2.5.5. (3-2) Feed jam (Error code: 380, 381, 382, 383, 384, 385, 389)
(3-2-1) Jam occurs immediately after the power is turned on.
Check item
Check work
Actions to be taken
at NG
(3-2-1-1) Check condition of the paper running path
Paper running path
of the front unit
Open the front cover check if paper is not
jammed in the paper running path.
Remove the
jammed paper.
(Refer to
the following
process)
(3-2-1-2) Check condition of the mechanical parts
Check the sensor
levers of the IN1
sensor, that of the
IN2 sensor and that
of the WR sensor.
Check if shape and movement of the sensor
levers have any abnormality or not.
Replace the
sensor with the
good sensor
lever.
(3-2-1-3) Check condition of electrical parts
Check the detection
condition of the
sensor signal.
Confirm that the sensor signals are normally
detected by using the Maintenance Menu
SWITCH SCAN function.
Replace either
the CU/PU board
or the front
sensor board
(RSG PCB)
or connection
cable.
Check the output
signal levels of the
IN1 sensor, that
of the IN2 sensor
and that of the WR
sensor.
Check for the following signals at the FSNS
connector of the CU/PU board.
Pin-4: IN1 sensor
Pin-3: IN2 sensor
Pin-2: WR sensor
Confirm that the above signal levels change
when the sensor lever is operated.
Replace the
front sensor
board (RSG
PCB)
Check the power
voltages supplied
to the front sensor
board (RSG PCB)
Check the 5V power at the FSNS connector of
the front sensor board (RSG PCB).
Pin-1: 5V power supply
Pin-5: 0VL
Replace the
connection
cable.
(3-2-2) Jam occurs immediately after the paper feed is started.
Check item
Check work
Actions to be taken
at NG
(3-2-2-1) Check condition of the paper 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.
(Refer to
the following
process)
(3-2-2-2) Check condition of the mechanical parts
Check the sensor
levers of the IN1
sensor, that of the
IN2 sensor and that
of the WR sensor.
Check if shape and movement of the sensor
levers have any abnormality or not.
Replace the
sensor with the
good sensor
lever.
(3-2-2-3) Motor operation check
Hopping motor
Confirm that the hopping motor works normally
by using the Motor & Clutch Test of the self-
diagnostic mode.
Replace the
CU/PU board,
or replace the
hopping motor.
Hopping motor driver
Remove the MOTERCL connector of the CU/PU
board and check the following at the connector
side.
Several M
Ω
between pin-5 – FG.
Several M
Ω
between pin-6 – FG.
Several M
Ω
between pin-7 – FG.
Several M
Ω
between pin-8 – FG.
Replace the CU/
PU board.
