Brother HL-3450CN Service Manual page 119

CHAPTER 4 STRUCTURE OF SYSTEM COMPONENTS
(1) Symbol and Parts Name
Symbol
LVPS
DSW1
DSW2
DSW3
FUSER Unit
TH
HR
BR
TFU1 / TFU2
HVU
MCTL
PANEL
LCD
Scanner Unit
SCM
PDU
LDU
MM
DM
FUFAN (EX)
CTFAN (PS)
OZFAN (OZ)
DVLK/DVLY/
DVLM/DVLC
FUCL
FBCL
Parts Name
Low-voltage power supply unit
Interlock switch (Front)
Interlock switch (Top)
Interlock switch (Back)
Fusing unit
Thermistor
Heat roller
Back-up roller
Thermal fuse
High-voltage power supply unit
MCTL PWB
Panel PWB
LCD PWB
Scanner Unit (Optical unit)
Scanner motor
PDL PCB
LDU PCB
Main motor
Developer drive motor
fuser fan motor
Control fan motor
Ozone fan motor
Developer clutch (K.Y.M.C)
Fuser clutch
Cleaning clutch
Symbol
IOD1 IOD1 PWB
OHP OHP sensor
PEU (PS3) Paper empty sensor
PT1 (PS1) Paper feeding sensor
EN (PS4) Drum encoder sensor
Erase Lamp Erase lamp
TDP / TTR Toner sensor
TNK Toner key sensor
PSU Paper size sensor
PFUL (PS6) Paper full sensor
CSR (PS5) Cleaning roller sensor
PT2 (PS2) Paper exit sensor
DPJ Drum jam sensor
OIL Oil sensor
BPS Belt sensor
TBLE / TBFL Waste toner sensor
IOD2 IOD2 PWB
IOD3 IOD3 PWB
FBCM Cleaning cam clutch
TRCM TR cam clutch
LFU Lower tray unit
PCLU Paper feeding clutch
PSL(MC) / Developer cam clutch
PSL (KY)
RECL Registration clutch
4-66
Parts Name