Brother Facsimile Equipment MFC7420 - Manual (Page 113)

Confidential 5 -4 2
5.1.17 Fixing Unit
(1) Disconnect the heater harness connector and thermistor harness connector.
(2) Remove the two cup B M4x12 taptite screws, and then remove fixing unit.
NOTE: Be sure not to touch the pressure roller.
(3) Remove the two PR spring.
(4) Remove the pressure roller ASSY (pressure roller, PR arm ASSY, PR bush) from the fuser
frame.
Taptite, cup B M4x12
Fixing unit
Taptite, cup B M4x12
Heater harness
1
3
2
Thermistor harness
PR arm ASSY
Hook
PR spring
Pressure roller
PR spring
Hook
PR arm ASSY
Fuser frame
“A”
“A”
Hook
PR spring
“A”
3
2
2
1