Ref. 2-2 Confidential
2. ELECTRONICS GENERAL BLOCK DIAGRAM
Fig. Ref. 2-2
Registration solenoid
High-voltage
power supply
Rear relay PCB
Main PCB
T1 solenoid
Toner sensor PCB unit
(light-receiving)
New toner sensor
Panel PCB
Thermistor center
(Fuser unit)
Thermistor side
(Fuser unit)
LD PCB
Laser unit
Polygon motor
Wireless LAN module
(Only MFC7840W)
Main motor
Low-voltage
power supply
Fan
Registration
rear sensor PCB
Edge sensor/Registration
front sensor PCB
Cover sensor
Toner LED
PCB ASSY
(emission)
Speaker
Battery
(Only MFC7840W)
NCU
(Only MFC7320/7340/
7440N/7450/7840N/7840W)
Paper eject
sensor
ADF motor
ADF unit
ADF sensor
CIS unit
FB unit
FB motor
There is not this unit to DCP7030
