Paper Feed Jam (Error 380) - Oki C810 Maintenance Manual

Oki Data CONFIDENTIAL

7.5.2.(4) Paper Feed Jam (Error 380)

(4-1) Paper feed jam occurs right after turning on the power
Confirmation Items
(4-1-1) Check of state of running route

Paper running route Check to see if there is paper jammed on the
in front unit running route.
(4-1-2) Check of state of mechanical parts
 
Check the sensor Check to see if the sensor levers demonstrate
levers of inlet sensor any abnormal shape or motion.
1, 2 and WR sensor.
(4-1-3) Check of electrical parts
Check the state Use the SWITCH SCAN function of the
of sensor signal maintenance menu to check to see if the sensor
detection. signal is detected normally.

Check the output Check the following signals through the FSNS
connector ⑯ of the PU PCB.
levels of inlet sensor
1, 2 and WR sensor
Pin 4: Inlet sensor 1
Pin 3: Inlet sensor 2
Pin 2: WR sensor
Confirm that the above signal levels vary as the
sensor levers are actuated.
Check the power Check the 5-V power through the CN connector
⑯
supply of the front
of the front sensor PCB (RSF PCB).
sensor PCB (RSF
Pin 5: 5-V power
PCB).
Pin 1: 0VL
44072903TH Rev.1
Confirmation Tasks Action at NG

Remove the
jammed paper.
Replace the
sensor lever
with a normal
one.

Replace the
PU PCB, front
sensor PCB
(RSF PCB) or
the connection
cord.
Replace the
front sensor
PCB (RSF
PCB).
Replace the
connection
cord.
(4-2) Paper feed jam occurs right after paper feeding starts (Multi-purpose Tray)
Confirmation Items
(4-2-1) Check of state of running route

Paper running route Check to see if there is paper jammed on the
in multi-purpose tray running route.
(4-2-2) Confirm condition of mechanical parts

Check sensor levers Check to see if the sensor levers demonstrate
at the entrance any abnormal shape or motion.
sensor 1, 2 and WR
sensor lever
(4-2-3) Check of the operating state of motors

Feed motor Conduct the Motor and Clutch Test of the self-
diagnostic mode, and check to see if the feed
motor operates normally.
Feed motor driver UnplugtheHOPIDUPconnector
PUPCB,andconfirmthefollowingonthe
connectorside:
Several MΩ between pin 1 and FG
Several MΩ between pin 2 and FG
Several MΩ between pin 3 and FG
Several MΩ between pin 4 and FG
7. TROUBLESHOOTING PROCEFRURES
Confirmation Tasks Action at NG

Remove the
jammed paper.
Replace the
sensor lever with
a normal one.

Exchange a PU
board or paper
feed motor.
①
ofthe Exchange a PU
board.
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