Oki Data CONFIDENTIAL
43827101TH Rev.2
198 /
7.5.2.(3)
Paper Feed Jam(Error 391:1st Tray)
(3-1)Paper feed jam occurs right after turning on the power (1st Tray)
Paper running route in front
unit
Check the sensor levers of
inlet sensors 1 and 2.
Check the state of sensor
signal detection.
Check the output levels of
inlet sensors 1 and 2
Check the power supply of
the front sensor PCB.
Confirmation Tasks
Open the front cover, and check to see if there is paper jammed
on the running route.
Check to see if the sensor levers demonstrate any abnormal
shape or motion.
Use the SWITCH SCAN function of the Maintenance Menu to
check to see if the sensor signal is detected normally.
Check the following signals through the FSNS connector of the
PU PCB.
Pin 4: Inlet sensor 1
Pin 3: Inlet sensor 2
Confirm that the above signal levels vary as the sensor levers
are actuated.
Check the 5-V power through the CN connector of the front
sensor PCB.
Pin 5: 5V power
Pin 1: 0VL
Action at NG
Remove the jammed
paper
Replace the sensor
lever with a normal
one.
Replace the PU PCB,
front sensor PCB or the
connection cord.
Replace the front
sensor PCB.
Replace the connection
cord.
(3-1-1) Check of state of running route
(3-1-3) Check of electrical parts
(3-1-2) Check of state of mechanical parts
Confirmation Items
(3-2)Paper feed jam occurs right after paper feeding starts (1st Tray)
Paper running route in front unit
Check the sensor levers of
inlet sensors 1 and 2.
Confirmation Tasks
Check to see if there is paper jammed on the running route.
Check to see if the sensor levers demonstrate any abnormal
shape or motion.
Action at NG
Remove the jammed
paper.
Replace the sensor
lever with a normal
one.
(3-2-1) Check of state of running route
(3-2-2) Check of state of mechanical parts
Confirmation Items