Oki Data CONFIDENTIAL
42615101TH Rev.8 202 /
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 path route of the front
unit
Check sensor levers at the
entrance sensor 1 and 2
Confirm status of the sensor
signal detection
Check output levels of the
entrance sensor 1 and 2
Check the power of a front
sensor board (RSF PCB)
Confirmation Tasks
Open a front cover to confirm paper is not jammed in a path
route.
Confirm that there is no abnormality in the shape of the sensor
lever and in the operation.
Confirm a sensor signal is correctly detected by the SWITCH
SCAN function of the maintenance menu.
Check the following signals with FSNS connector of PU board
(PRN PCB).
4pin:Entrance Sensor 1
3pin:Entrance Sensor 2
Confirm that the above signals operate a sensor lever and vary.
Check 5V power with CN connector of a front sensor board
(RSF PCB).
5pin:5V Power
1pin:0VL
Action at NG
Remove jammed paper.
Exchange to a normal
sensor lever.
Exchange a PU board
(PRN PCB),
Front sensor board
(RSF PCB) or a
connection board.
Exchange a front
sensor board
(RSF PCB).
Exchange a connection
cord.
(3-1-1)Confirm a path route condition
(3-1-3)Confirm electric parts
(3-1-2)Confirm status of mechanical parts
Confirmation Items
(3-2)Paper feed jam occurs right after paper feeding starts (1st Tray)
Paper path route of the front unit
Check sensor levers at the
entrance sensor 1 and 2
Paper Feed Motor
Paper Feed Motor Driver
Confirmation Tasks
Confirm paper is not jammed in a path route.
Confirm that there is no abnormality in the shape of the sensor
lever and in the operation.
Confirm that a paper feed motor operates correctly with Motor &
Clutch test of the Self-diagnostic Mode.
Remove HOPKID connector of the PU board (PRN PCB) and
check the followings at the connector side.
"n"M
Ω
between 5pin-FG
"n"M
Ω
between 6pin-FG
"n"M
Ω
between 7pin-FG
"n"M
Ω
between 8pin-FG
Action at NG
Remove jammed paper.
Exchange to a normal
sensor lever.
Exchange a PU board
(PRN PCB) or paper
feed motor.
Exchange a PU board
(PRN PCB).
(3-2-1)Confirm a path route condition
(3-2-2)Confirm condition of mechanical parts
(3-2-3)Confirm condition of the motor operation
Confirmation Items