Paper Feeding Sensor (Ps1); Fusing Unit - Brother HL-3450CN Service Manual

CHAPTER 7 DISASSEMBLY & RE-ASSEMBLY
4.6.7

Paper feeding sensor (PS1)

(1) Remove the paper feeding sensor from the rear frame.
(2) Disconnect the connector on the paper feeding sensor.
4.7

Fusing Unit

N
The fusing unit consists of important safety parts.
Therefore, replacement of parts or disassembly and maintenance work should only be done
at an appropriate service facility by skilled service personnel acquainted with electrical
safety. After re-assembly the product safety should be reconfirmed.
N
Since the fuser unit is very hot, make sure that the fuser unit and surrounding area are
well cooled down prior to starting the replacement of parts. You may get burned when
touching hot areas.
N
The fusing unit contains silicone oil. Take care not to spill the silicone oil, especially on
the floor, as the floor will become very slippery and dangerous.
Fig. 7-83
DANGER
Note in Parts Replacement
7-54
Paper feeding sensor