44205301TH Rev.1
162 /
Oki Data CONFIDENTIAL
7. Troubleshooting and repair procedure
7.5.2. (4) Feed jam (error code 380)
(4-1) Jam occurs immediately after the power is turned on.
Check item Check work
Action to be taken
at NG
(4-1-1) Check condition of the paper running path
Paper running path
of the front unit
Open the front co
ver check if paper is not
jammed in the paper running path.
Remove the
jammed paper
.
(4-1-2) Check condition of the mechanical parts
Check the sensor
lev
ers of the paper
entrance sensor 1,
that of the paper
entrance sensor 2
and that of the WR
sensor.
Check if shape and mov
ement of the sensor
levers have any abnormality or not.
Replace the
sensor with the
good sensor
lever.
(4-1-3) 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
(RSF PCB)
or connection
cable.
Check the output
signal levels of the
paper entrance
sensor 1, that of
the paper entrance
sensor 2 and that of
the WR sensor.
Chec
k for the f
ollowing signals at the FSNS
connector of the CU/PU board.
Pin-4: Paper entrance sensor 1
Pin-3: Paper entrance sensor 2
Pin-2: WR sensor
Confirm that the above signal levels change
when the sensor lever is operated.
Replace the
front sensor
board (RSF
PCB)
Check the power
voltages supplied
to the front sensor
board (RSF PCB)
Check the 5V power at the FSNS connector
of the front sensor board (RSF PCB).
Pin-1: 5V power supply
Pin-5: 0VL
Replace the
connection
cab
le.
(4-2) Jam occurs immediately after the paper feed is started.
Check item Check work
Action to be taken
at NG
(4-2-1) 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.
(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.
Check if shape and movement of the sensor
levers have any abnormality or not.
Replace the
sensor with the
good sensor
lever.
(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.
Replace the
CU/PU board, or
replace the paper
feed motor.
Paper feed motor
driver
Remove the HP_PSZCL connector
of the
CU/PU board and check the followings at the
connector side.
Several M
Ω
between pin-1 – FG
Several M
Ω
between pin-2 – FG
Several M
Ω
between pin-3 – FG
Several M
Ω
between pin-4 – FG
Replace the
CU/PU board.
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