Poor Fixing - Brother DCP-8070D Service Manual

Poor fixing

■
Step Cause
Low pressure of
1 pressure roller in
the fuser unit
Fuser unit failure
2
Toner sensor
failure
3
HVPS PCB
4 failure
Main PCB failure Is the problem solved
5
Low-voltage
6 power supply
PCB failure
<User Check>
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Check
Is the problem solved by
changing the position of
the anti-curl switch?
Is the problem solved
after replacing the fuser
unit?
Is the "Toner life End"
message indicated on
the LCD after replacing
the current toner
cartridge with an empty
one?
Is the problem solved
after replacing the
HVPS PCB ASSY?
after replacing the main
PCB ASSY?
Is the problem solved
after replacing the LVPS
PCB unit?
3-51
Result Remedy
Change the position of the
Yes anti-curl switch.
Replace the fuser unit.
Yes
Replace the toner sensor.
No
Replace the HVPS PCB
Yes ASSY.
Replace the main PCB
Yes ASSY.
Replace the LVPS PCB
Yes unit.
Confidential