Block Diagram - Brother DCP-L5500D Service Manual

2.4 Block Diagram

LCD panel ASSY
4.85 inch models only 3.7 inch models only
Color LCD Color LCD
LCD relay PCB
Panel PCB
MP paper empty
sensor PCB
T1 paper feed
sensor PCB
Registration front/
rear sensor PCB
Center thermistor
Side thermistor
Fuser unit
T2TT pickup clutch
T2TT jam sensor PCB
T2TT paper empty sensor PCB
T2TT paper feed sensor PCB
T3TT pickup clutch
T3TT release clutch
T3TT jam sensor PCB
T3TT paper empty sensor PCB
T3TT paper feed sensor PCB
T4TT pickup clutch
T4TT release clutch
T4TT jam sensor PCB
T4TT paper empty sensor PCB
T4TT paper feed sensor PCB
T5TT pickup clutch
T5TT release clutch
T5TT jam sensor PCB
T5TT paper empty sensor PCB
T5TT paper feed sensor PCB
TT fan
TT balance sensor R
USB host PCB
Touch panel
ASSY
NFC models only
Key PCB NFC
Speaker
Fax models only
Modem PCB
High-voltage
power supply PCB
Eject sensor PCB
Low-voltage
Heater
power supply PCB
T2TT
relay
PCB
T3TT
relay
PCB
TT
T4TT
control
relay
PCB
PCB
T5TT
relay
PCB
Low-voltage Power Supply PCB
TT motor
Relay connector
TT balance sensor L
Relay connector
TT
Main PCB
Fig. 2-6
2-10
ADF unit
ADF motor
ADF cover sensor
Document detection sensor
Document scanning position sensor
Duplex scanning models only
Second side CIS unit
Document scanner unit
First side CIS unit
FB motor
Internal temperature sensor
External temperature/humidity sensor
Eject motor
Back cover/duplex
tray sensor
Models with USB host on the rear side only.
Eject stack sensor
Develop release clutch
Relay front PCB
MP solenoid
T1 pickup clutch
New toner
sensor
Registration clutch
Toner amount detection
sensor PCB (light reception)
Front cover sensor
Laser unit
LD PCB
BD sensor Polygon motor
Paper feed motor
Toner amount
detection sensor Fuser fan
PCB (light emission)
Models with 520-sheet T1 only
Erase lamp PCB
Models with 520-sheet T1 only
Paper empty
sensor PCB
WLAN models only
Wireless LAN PCB
LT
LT paper empty
sensor PCB
LT release clutch
LT control PCB
LT pickup clutch
LT paper feed
sensor PCB
Confidential