Oki Data CONFIDENTIAL
45487001TH Rev.1
6-51 /
6. Troubleshooting procedure
6.5.2.(5) Paper feed jam (Error 390: MP Tray)
(5-1) Jamoccursimmediatelyafterthepoweristurnedon.(Multipurposetray)
Check item Check work
Actions to be taken
at NG
(5-1-1) Check condition of the paper running path
Paper running path
of the multipurpose
tray
Check if paper is jammed or not in the paper
running path.
Remove the
jammed paper.
(5-1-2) Check condition of the mechanical parts
Check the sensor
levers of the paper
entrance sensor
2 and the WR2
sensor.
Check if shape and movement of the sensor
levers have any abnormality or not.
Replace the
sensor with the
good sensor
lever.
(5-1-3) Check condition of electrical parts
Check the detection
condition of the
sensor signal.
Confirm that the sensor signals are normally
detected by using the SWITCH SCAN
function of the self-diagnostic mode.
Replace either
the PU/CU
board or the
front sensor
board (HSC-
2 PCB) or
connection
cable.
Check the sensor
output signal
level of the paper
entrance sensor
2 and the WR
sensor.
Check for the following signals at the FSNS
connector
of the PU/CU board.
Pin-3: Paper entrance sensor 2
WR2SNS connector
Pin-2: WR2 sensor
Confirm that the above signal levels change
when the sensor lever is operated.
Replace the
front sensor
board (HSC-2
PCB)
Check the power
voltages supplied
to the front sensor
board (HSC-2
PCB)
Check the 5V power at the FSNS connector
of the front sensor board (HSC-2 PCB).
Pin-1: 5V power supply
Pin-5: 0VL
Replace the
connection
cable.
(5-2) Jamoccursimmediatelyafterpaperfeedisstarted.(Multipurposetray)
Check item Check work
Actions to be taken
at NG
(5-2-1) Check condition of the paper running path
Paper running path
of the multipurpose
tray
Check if paper is jammed or not in the paper
running path.
Remove the
jammed paper.
Sheet Receive of
the multipurpose
tray
Confirm that the Sheet Receive has moved
up normally.
Confirm that the support spindle and spring of
the Sheet Receive have been installed in the
specified positions normally.
Correct installa-
tion of the above
parts so that the
Sheet Receive
moves up to the
specified posi-
tion normally.
(5-2-2) Check condition of the mechanical parts
Check the sensor
levers of the paper
entrance sensor
2 and the WR2
sensor.
Check if shape and movement of the sensor
levers have any abnormality or not.
Replace the
sensor with the
good sensor
lever.
Front cover Confirm that the locks in the right and left of
the front cover are locked normally.
Replace the
font cover
assembly
Check the feed
roller, the pickup
roller, and the
retard roller.
Check if any foreign materials such as paper
dust on the surface of the feed roller or of the
pickup roller or not.
Remove the
foreign material.
Check if the feed roller has worn out or not. Replace the
feed roller.
(5-2-3) 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/
CU board, or
replace the paper
feed motor.
MPT clutch Carry out Motor & Clutch Test to check if the
MPT clutch works normally.
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