Brother HL-3450CN Service Manual page 85

CHAPTER 4 STRUCTURE OF SYSTEM COMPONENTS
(2) Motors (Refer to Fig.4-30.)
No.
1
2
3
4
5
6
7
7-1
7-2
7-3
Layout of Motors
7-2. Top cover switch
6. Controller fan motor
7-3. Rear access
cover switch
Name
Main motor
Developing motor
(Developer drive motor)
Scanner motor
Ozone fan motor
(Cooling fan motor)
Fuser fan motor
(Cooling fan motor)
Controller fan motor
(Cooling fan motor)
Interlock switch
Front cover switch
Top cover switch
Rear access cover
(TR unit cover) switch
5. Fuser fan motor
Code
To drive the OPC belt and the paper
MM
transport system.
To drive the toner cartridge and the
DM
developing system.
SCM To scan the laser beam
To exhaust the ozone from the
OZFAN
printer (charger unit).
(OZ)
HTFAN
To exhaust the heat of the fusing
(EX)
To exhaust the heat of the power
CTLFAN
supply unit and Interface Controller.
(PS)
These are the safety interlock
DSW1
switches that operate when the
DSW2
covers are opened.
DSW3
4. Ozone fan motor
Fig. 4-30
4-32
Function
1. Main Motor
2. Developing motor
3. Scanner motor
7-1. Front cover switch