Konica Minolta Bizhub 20p Service Manual page 86

■ Paper jam in the tray 2/tray 3
Step Cause
Dirt on LT edge
1
sensor
LT edge actuator
2 catching on some
position
LT sensor PCB
3 ASSY failure
LT solenoid failure Is the problem solved
4
■ Paper jam in the duplex unit section
Step Cause
Duplex unit failure
1
Check
Is there paper powder on
the LT edge sensor?
Does the LT edge
actuator move smoothly?
Is the problem solved
after replacing the LT
sensor PCB ASSY?
after replacing the LT
solenoid?
Check
Is the problem solved
after replacing the duplex
unit?
3-29
Result Remedy
Clean the LT edge
Yes
sensor.
Re-assemble the LT edge
No actuator.
Replace the LT sensor
Yes PCB ASSY.
Replace the LT solenoid.
Yes
Result Remedy
Replace the duplex unit.
Yes
Confidential