Oki MC860 MFP, Руководство по обслуживанию

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Oki Data CONFIDENTIAL
43967002TH Rev. 1
329 /
7. Troubleshooting
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 the 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.
(4-1-2) 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
lever 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
PU PCB or the front
sensor PCB (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. Check for the following signals at the FSNS
connector number 16 of the PU PCB.
Pin-4: Entrance sensor 1
Pin-3: Entrance sensor 2
pin2: WR sensor
Confirm that the above signal levels change
when the sensor lever is operated.
Replace the front
sensor PCB (RSF
PCB)
Check the power
voltages supplied
to the front sensor
PCB (RSF PCB) Check the 5V power at the FSNS connector
of the front sensor PCB (RSF PCB).
Pin-1: 5V power
Pin-5: 0VL
Replace the
connection cable.
(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 the 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
lever 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 PU
PCB or paper feed
motor.
Paper feed motor
driver Remove the HOPSIZE connector of the
PU PCB and check the followings at the
connector side.
Several M
Ω
between pin1 – FG.
Several M
Ω
between pin2 – FG.
Several M
Ω
between pin3 – FG.
Several M Ω between pin4 – FG.
PU PCB
replacement