Wrinkles - Konica Minolta bizhub 20 Service Manual

■ Paper jam at the duplex scanning
<User Check>
- Use the A4 or Letter size.
- Use the document without warpage.
- Use the document which is not so too thin. (thickness of paper)
Step
Foreign object
1
inside ADF
Switch back
sensor actuator
2
catching on some
position
Each flap catching
3
on some position
Switch back
sensor
malfunction
4
Flap A failure
5
Switch back
6 solenoid ASSY
failure
Switch back roller
7 failure

11.4 Wrinkles

<User Check>
- Check if the document is loaded into the ADF correctly.
- Check whether the document guide matches the document size.
- Check whether the document does not curl.
Step
Feed roller
positioning section
1
failure
Cause
Is there a foreign object
inside ADF?
Does the switch back
sensor actuator move
smoothly?
Does the each flap move
smoothly?
Does the switch back
sensor move smoothly?
(Check it following the
procedure described in
"4.10 Sensor Operational
Check (Function code
32)" in Chapter
Does the flap A move
smoothly? Is it damaged?
Does the switch back
solenoid ASSY move
smoothly?
Does the switch back
roller move smoothly? Is
it damaged?
Cause
Is each feed roller
attached correctly section?
(Check the feed roller
position in
Check Result
Yes
No
No
No
6)
No
No
No
Check Result
No
Page 5-61)
3-80
Remedy
Remove the foreign
object.
Re-assembly the switch
back sensor actuator.
Re-assembly the flap.
Replace the switch back
sensor.
Replace the flap A.
Replace the switch back
solenoid ASSY.
Replace the switch back
roller.
Remedy
Re-assembly each feed
roller to the correctly
section.
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