Paper Jam - Konica Minolta bizhub 20 Service Manual

4.3

Paper Jam

■ Paper jam in the paper tray and front cover
Step
Dirt on edge
1
sensor
Registration front
actuator/edge
2
actuator catching
on some position
Registration front
sensor PCB
(registration front
3 actuator/edge
actuator failure)
Registration
4 solenoid failure
Toner LED PCB
5 failure
High-voltage
power supply PCB
6
failure
Main PCB failure
7
Cause
Is there paper powder in
the edge sensor?
Does the registration front
actuator/edge actuator
move smoothly?
Does the registration front
sensor move smoothly?
(Check it following the
procedure described in
"4.10 Sensor Operational
Check (Function code
32)" in Chapter
Is the problem solved
after replacing the
registration solenoid?
Is the problem solved
after replacing the toner
LED PCB ASSY?
Is the problem solved
after replacing the High-
voltage power supply
PCB ASSY?
Is the problem solved
after replacing the Main
PCB ASSY?
Check Result
Yes
No
No
6)
Yes
Yes
Yes
Yes
3-42
Remedy
Clean the edge sensor.
Re-assemble the
registration front actuator/
edge actuator.
Replace the registration
front sensor PCB ASSY.
Replace the registration
solenoid.
Replace the toner LED
PCB ASSY.
Replace the High-voltage
power supply PCB ASSY.
Replace the Main PCB
ASSY.
Confidential