Konica Minolta bizhub 20 Service Manual page 154

■ Paper jam in the ADF
<User Check>
- Check whether length does not use paper equal to or less than 148 mm.
Step Cause
Foreign object
1
inside ADF
Document rear
2 actuator catching
on some position
Flap A catching on
3
some position
Flap B catching on
4
some position
LF4/2 film
5 catching on some
position
Document rear
sensor
malfunction
6
Feed roller failure
7
■ Paper jam in the paper eject section
Step Cause
Foreign object
1
around paper eject
Pinch roller
2 malfunction
Eject roller failure
3
Check
Is there a foreign object
inside ADF?
Does the document rear
actuator move smoothly?
Does the flap A move
smoothly?
Does the flap B move
smoothly?
Does the LF4 film move
smoothly?
Does the document rear
sensor move smoothly?
(Check it following the
procedure described in
"4.10 Sensor Operational
Check (Function code
32)" in Chapter 6)
Does the feed roller move
smoothly? Is it damaged?
Check
Is there a foreign object
around paper eject?
Is the pinch roller of the
eject roller attached to the
eject roller?
Does the eject roller
move smoothly? Is it
damaged?
3-79
Result Remedy
Remove the foreign
Yes
object.
Re-assembly the
No document rear actuator.
Re-assembly the flap A.
No
Re-assembly the flap B.
No
Replace the LF4 film.
No
Replace the document
rear sensor.
No
Replace the feed roller.
No
Result Remedy
Remove the foreign
Yes
object.
Re-assembly the pinch
No roller.
Replace the eject roller.
No
Confidential