Dirt On Paper - Brother DCP-9010CN Service Manual

■ Paper jam in the back cover and paper eject section
Step
1 Foreign object
around fuser unit
2 Paper eject rear
actuator top failure
3 Paper eject front
actuator failure
4 Paper eject rear
actuator failure
5 Eject front sensor
PCB failure
6 Eject rear sensor
PCB failure
3.4

Dirt on Paper

<User Check>
- Check if the paper is loaded into the paper tray correctly.
- Turn over the stack of paper in the paper tray, or try rotating the paper 180 ° in the paper tray.
- Replace the waste toner box with a new one.
Step
1 Fuser unit dirty
2 Dirt in the paper
feed system
3 Belt unit dirty
4 Waste toner
sensor failure
5 Main PCB failure
Cause
Is there a foreign object
around the fuser unit?
Does the paper rear
eject actuator top move
smoothly? Is it damaged?
Does the paper eject front
actuator move smoothly?
Is it damaged?
Does the paper eject rear
actuator move smoothly?
Is it damaged?
Is the problem solved by
replacing the eject front
sensor PCB ASSY?
Is the problem solved by
replacing the eject rear
sensor PCB ASSY?
Cause
Is there dirt around the
entrance of the fuser
unit?
Is the pressure roller
dirty?
Is the paper tray or feed
system on the drum unit
dirty with toner?
Does dirt on the paper
disappear after
replacing the belt unit
with a new one?
Is the waste toner box
full of toner?
Is the problem solved
after replacing the main
PCB ASSY?
3-59
Check
Result
Yes
No
No
No
Yes
Yes
Check
Result
Yes
Yes
Yes
Yes
No
Yes
Remedy
Remove the foreign
object.
Replace the paper eject
rear actuator top.
Replace the paper eject
front actuator.
Replace the fuser unit.
Replace the eject front
sensor PCB ASSY.
Replace the eject rear
sensor PCB ASSY.
Remedy
Clean the entrance of
the fuser unit.
Clean the pressure
roller.
Wipe dirt off.
Replace the belt unit.
Replace the waste toner
sensor.
Replace the main PCB
ASSY.
Confidential