5) Paper Transport Jam (Error 381); Paper Transport Jam (Error 381); Transport Jam Occurred Immediately After Turning On The Printer - Oki C3400n Maintenance Manual

7.5.2.(5)

Paper transport jam (Error 381)

(5-1)

Transport jam occurred immediately after turning on the printer.

Confirmation Items
(5-1-1) Check paper-feeding route condition
Paper-feeding route inside the
front unit
(5-1-2) Check the mechanical parts' condition
Check the sensor lever of the
WR sensor.
(5-1-3) Check the electrical parts' condition
Check the condition of sensor
signal detection.
Check the output level of WR
sensor.
Check the power supply of
front sensor board (MIP PCB).
43163501TH Rev. 1
Confirmation Tasks
Check whether the paper jam occurred during the route.
Check whether there is something abnormal about the form of
sensor lever and its movement.
By using the switch scanning test function of the maintenance
utility, check whether the sensor signal has been normally
detected.
Check the following signals of FSNS connector of main board
(BLA PCB).
4pin: WR sensor
Operate and adjust the sensor lever in order to check the signal
level.
Check the power supply of 5V of CN connector of front sensor
board (MIP PCB).
1pin: 5V power supply
5pin: 0VL
Oki Data CONFIDENTIAL
Action at NG
Remove the jammed
paper.
Replace the sensor
lever with a new one.
Replace the main
board (BLA PCB) or
front sensor board (MIP
PCB) or the connecting
cable with new one.
Replace the front
sensor board (MIP
PCB) with a new one.
Replace the
connecting cable with
a new one.
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