Document Feeder (Adf) - Panasonic UF-890 Service Manual

4.5

Document Feeder (ADF)

4.5.1 No Document Feed
START
Is the document set properly?
Yes
Is the document thickness or size
within specification?
Yes
Is the Pi... tone generated when
the document is set?
Yes
Does the ADF Roller rotate?
Yes
Is the ADF Roller surface dirty?
Yes
Clean the ADF Roller surface.
END
No
Set the document properly.
No
Make a copy or cut the document
to the specification size.
No
Does the ADF Sensor actuator
move smoothly?
Yes
Does the voltage on CN7, pin2,
of the FCB PCB, vary when the
ADF Sensor is actuated?
Yes
Replace the FCB PCB.
No
Replace the Transmit Motor.
Is the trouble solved?
Yes
END
No
Adjust the separator pressure.
Is the trouble solved?
Yes
148
No
Adjust or replace the actuator.
No
Check connectors CN7 on the FCB
PCB and CN31 on SNS PCB.
Does the trouble still occur?
Yes
Replace the SNS PCB.
No
Replace the FCB PCB.
No
Replace the ADF Roller or
Separation Rubber or both.
No
END