Brother HL-5340D Service Manual page 95

Poor fixing
<User Check>
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Step Cause
High 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
Check
Is the problem solved by
changing the position of
the anti-curl lever ?
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 a new
one?
Is the problem solved
after replacing the
HVPS PCB ASSY?
after replacing the main
PCB ASSY?
Is the problem solved
after replacing the PS
PCB unit?
3-37
Result Remedy
Change the position of the
Yes anti-curl lever.
Replace the fuser unit.
Yes
Replace the toner sensor.
No
Replace the HVPS PCB
Yes ASSY.
Replace the main PCB
Yes ASSY.
Replace the PS PCB unit.
Yes
Confidential