Control Electronics; Components - Brother MFC640CW Service Manual

3.3 CONTROL ELECTRONICS

3.3.1 Components

The following illustrations show the hardware components for MFC820CW, MFC640CW and
DCP340CW. The corresponding wiring diagrams appear in
MFC820CW
WLAN
WLAN PCB
6-pin
Main
ASIC
ROM
8MB
EEPROM
MEDIA
GA
Media 1
(SM/XD/SD/MS
card)
LAN
PC
LAN I/F USB
SDAA
SDRAM
16MB
MODEM
DC motor driver
Main PCB
Stepping motor driver
Stepping motor driver
Media 2
(CF card)
Appendix
Power supply
PCB
4-pin
2-pin (MJ-line)
MJ PCB
2-pin (MJ 1)
Speaker
2-pin
Center panel PCB
5-pin
18-pin Color LCD
INK JET PRINTING & PAPER FEEDING
Carriage PCB
CR encoder sensor
17-pin (Head 1)
Paper width sensor
19-pin (Head 2)
Head thermistor
2-pin
Carriage motor
Ink refill ASSY
Ink cartridge PCB
Ink cartridge
7-pin
sensors
9-pin
Maintenance unit
2-pin
Purge cam switch
PF sensor PCB
5-pin
Registration sensor
PF encoder sensor
7-pin
Paper feed motor
2-pin
SCANNING
12-pin
CIS unit
4-pin
CIS motor
ADF unit
Document front sensor
10-pin
Document rear sensor
ADF motor
4-pin
Backup battery
3-40
5.
AC line
Line
External telephone
Control panel PCB
15-pin
Scanner open sensor
Head/
carriage
unit
Confidential