Ref. 2-1 Confidential
REFERENCE 2 THEORY OF OPERATION
1. GENERAL BLOCK DIAGRAM
Fig. Ref. 2-1
Video/Engine
control block
Control system
Laser scanner unit Drive block
(DC motor)
Low-voltage power
supply block
High-voltage power
supply block
Transfer block
Charging block
Image forming
system
Feed system
Internal RAM
Paper powder
remove block
Exposure drum
Developing block
Toner
NVRAM
Parallel ROM
Battery
(Only MFC7840W)
FB unit
ADF unit
(There is not this unit to DCP7030)
Speaker
USB host
(Only MFC7840W)
BR network
(Only DCP7045N/
MFC7440N/7840N/7840W)
NCU
(Only MFC7320/7340/7440N/
7450/7840N/7840W)
USB interface block
Wireless LAN module
(
Only MFC7840W
)
Operation block (Panel)
Phone line
External device
Operation block
(Panel)
Paper tray
Fuser unit
Paper eject tray
Drum Unit
Developing unit
