Paper Running Jam (Error Code 381:); Jam Occurs Immediately After The Power Is Turned On; Jam Occurs Immediately After A Paper Is Taken Into Printer - Oki C711 Maintenance Manual

Oki Data CONFIDENTIAL

7.5.2. (6) Paper running jam (error code 381:)

(6-1) Jam occurs immediately after the power is turned on.

Check item
(6-1-1) Check condition of the running path.
Paper running path Check if paper is jammed or not in the paper
of the front unit running path.
(6-1-2) Check condition of the mechanical parts
Check the sensor Check if shape and movement of the sensor
lever of the WR levers have any abnormality or not.
sensor.
(6-1-3) Check condition of electrical parts
Check the detection Confirm that the sensor signals are normally
condition of the detected by using the SWITCH SCAN function of
sensor signal. the self-diagnostic mode.
Check the sensor Check for the following signals at the FSNS
lever of the WR connector
sensor.
Pin-2: WR sensor
Confirm that the above signal levels change
when the sensor lever is operated.
Check the power Check the 5V power at the CN connector
voltages supplied the front sensor board (RSF PCB).
to the front sensor
Pin-1: 5V power supply
board (RSF PCB)
Pin-5: 0VL
44205401TH Rev.1
Action to be taken
Check work
Remove the
jammed paper.
Replace the
sensor lever with
the good sensor
lever.
Replace either
the CU/PU board
or the front
sensor board
(RSF PCB)
or connection
cable.
Replace the
of the CU/PU board. front sensor
board (RSF
PCB)
of Replace the
connection
cable.

(6-2) Jam occurs immediately after a paper is taken into printer.

Check item
at NG
(6-2-1) Check condition of the paper running path
Paper running path
on the belt.
(6-2-2) Check condition of the mechanical parts
Check the sensor
lever of the WR
sensor.
(6-2-3) Motor operation check
Paper feed motor
driver, belt motor
driver and ID motor
Paper feed motor,
belt motor
7. Troubleshooting and repair procedure
Check work
Remove the ID unit and check if paper is jammed
or not in the paper running path.
Check if shape and movement of the sensor
levers have any abnormality or not.
Confirm that the paper feed motor, belt motor
and ID motor work normally by using the Motor
& Clutch Test of the self-diagnostic mode.
Check if any load exists or not.
Remove the BELT ID UP connector of the
CU/PU board and check the followings at the
connector side.
Several MΩ between pin-5 – FG
Several MΩ between pin-6 – FG
Several MΩ between pin-7 – FG
Several MΩ between pin-8 – FG
Remove the HP_PSZCL connector of the
CU/PU board and check the followings at the
connector side.
Several MΩ between pin-1 – FG
Several MΩ between pin-2 – FG
Several MΩ between pin-3 – FG
Several MΩ between pin-4 – FG
Action to be taken
at NG
Remove the
jammed paper.
Replace the
sensor lever with
the good sensor
lever.
Replace the
CU/PU board,
or replace the
defective motor
among paper
feed motor, belt
motor and ID
motor, or replace
the ID unit or
belt unit.
If any attempt
of using new ID
unit or new belt
unit as a trial
is going to be
made, be sure to
use the System
Maintenance
Menu FUSE
KEEP MODE.
Replace either
paper feed
motor, belt motor
or CU/PU board.
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