Theory Of Operation; General Block Diagram - Brother DCP-9045CDN Reference Manual

REFERENCE 2
1.

GENERAL BLOCK DIAGRAM

CCD unit
ADF sensors
Speaker
Battery
ADF motor
ADF
driver
FB motor
Telephone lines
Exposure system
Image forming system
Develop unit
Toner
Developing block
Drum unit
Charging block
Exposure drum
Cleaner block
Blet unit
Transfer block
Belt cleaner block
Transfer HVPS block
Paper feed system
Paper tray

THEORY OF OPERATION

Video control system
Extended RAM
DIMM 144pin
Internal RAM
Low-voltage
Video control block
power supply
block
NCU
Laser unit
Charge HVPS block
K Y
Toner
Developing block
K Y
Charging block
Exposure drum
Cleaner block
Transfer block
Fuser unit
USB host block
Engine control system
Engine control block
M
Toner Toner
Developing block Developing block
M
Charging block Charging block
Exposure drum Exposure drum
Cleaner block Cleaner block
Transfer block Transfer block
Paper eject tray
Fig. Ref2-1
Ref. 2-1
Wireless LAN module
(MFC-9840CDW)
Interface USB device
(USB host) or Digital camera
Interface
(Network)
Interface
(Centronics)
Interface
(USB)
Operation block
(Panel)
C
Develop drive motor
Develop release motor
C
Drum drive motor 1
Drum drive motor 2
Belt unit
drive motor
Paper feed/
belt cleaner motor
Confidential