Block Diagram - Brother HLL3290CDW Service Manual

2.4

Block Diagram

Internal temperature
sensor
Registration mark
sensor L PCB
Registration mark
sensor R PCB
Fuser unit
Center thermistor
Side thermistor
Thermostat
Main heater
Sub heater
MP model only
Cartridge sensor (Black)
Cartridge sensor (Magenta)
Cartridge sensor (Cyan)
Cartridge sensor (Yellow)
Cartridge sensor relay flat cable
Back cover sensor
External temperature/
humidity sensor
Manual feed paper
Paper feed
empty/regist rear/
motor flat cable
regist front sensor
PCB
T1 paper empty/paper
feed sensor PCB
Process motor
Eject sensor PCB
flat cable
High-voltage
power supply
flat cable
Low-voltage power
supply PCB
USB host PCB
Modem flat cable
Duplex clutch
Modem PCB
Speaker
Panel flat cable
MP registration
NFC flat cable
sensor PCB
MP paper empty
sensor PCB
MP solenoid
Cartridge sensor
relay PCB
Main PCB
Registration clutch
T1 pick-up clutch
Develop release
clutch
Develop clutch
Paper feed motor
Process motor
High-voltage
power supply PCB
Top cover sensor
New toner sensor
LED control PCB
LED control
flat cable
Panel unit (Touch panel model only)
Panel control PCB
Panel unit (2-line LCD model only)
Panel control PCB
NFC PCB
Wireless LAN PCB
Document scanner unit
First side CIS unit
FB motor
First side CIS
flat cable
ADF unit
ADF motor
ADF cover sensor
Document detection
sensor PCB
Document scanning
position sensor PCB
Second side CIS
unit
Second side CIS flat cable
Fig. 2-9
2-15
Waste toner sensor
Develop release
sensor PCB
Fan
LED ASSY flat cable
(4 pcs)
LED ASSY (Black)
LED ASSY (Magenta)
LED ASSY (Cyan)
LED ASSY (Yellow)
Touch panel
LCD
Key PCB
LCD
Confidential