Brother MFC-9840CDW - Electronics General Block Diagram

Confidential
Ref. 2-2
2. ELECTRONICS GENERAL BLOCK DIAGRAM
LT
CCD
NCU
Speaker
Battery
Document front sensor
Document rear sensor
ADF relay PCB
Driver PCB
2nd LVPS
ADF motor
FB motor
Engine PCB
Front cover interlock switch
Develop drive motor
Paper feed/belt cleaner motor
Belt unit drive motor
Develop release motor
Drum drive motor 1
Drum drive motor 2
T1 paper feed solenoid
MP paper feed solenoid
Registration solenoid
Cleaner stoppage solenoid
Belt cleaner release solenoid
DX solenoid
Density sensor
Back cover sensor
Toner sensor PCB K (TE/NEW)
Toner sensor PCB Y (TE/NEW)
Toner sensor PCB M (TE/NEW)
Toner sensor PCB C (TE/NEW)
T1 PE/edge sensor PCB
MP PE/registration front sensor
T1 registration front sensor PCB
Registration rear sensor PCB
Develop release sensor PCB
Belt cleaner release sensor PCB
Drum phase sensor PCB 1
Drum phase sensor PCB 2
Internal temperature thermistor
Waste toner sensor 1
Waste toner sensor 2
THM/HUM sensor
Drum unit fan (OPC)
LT registration sensor PCB
LT PCB
Drum unit
Fuser unit
Laser unit
Plate motor
LT solenoid
LT PE/edge sensor PCB
Paper eject sensor PCB
Fuser thermistor
EL PCB K
EL PCB Y
EL PCB M
EL PCB C
EL electrode PCB
Fuser floating
connector
Registration
relay PCB
Main PCB
USB host relay PCB
Wireless LAN module
Charge HVPS
PCB
Density solenoid
Belt thermister
Registration-mark
sensor PCB 1
Registration-mark
sensor PCB 2
Toner sensor PCB K (TE emission)
Toner sensor PCB Y (TE emission)
Toner sensor PCB M (TE emission)
Toner sensor PCB C (TE emission)
Fuser unit fan (FU)
Air intake fan (AIR)
LVPS fan (PS)
LD PCB
Panel PCB
Polygon motor
LCD
Back light PCB
Low-voltage power supply
Transfer HVPS PCB
Transfer HVPS
Fig. Ref2-2