Brother MFC640CW Service Manual page 79

MFC640CW/DCP340CW
WLAN
LAN
WLAN PCB
LAN I/F
6-pin
Main
SDRAM
ASIC
16MB
ROM MODEM
8MB
EEPROM
Main PCB
MEDIA
GA
Media 1
(SM/XD/SD/MS
card)
PC
Power supply
PCB
USB
2-pin (MJ-line)
1
*
SDAA
2-pin (MJ 1)
(MFC640CW) 9-pin
(DCP340CW)
17-pin (Head 1)
19-pin (Head 2)
DC motor driver
Stepping motor driver
Stepping motor driver
Media 2
(CF card)
3-41
4-pin
1
*
1
*
MJ PCB
1
*
2-pin Speaker
Control panel PCB
6-pin Scanner open sensor
INK JET PRINTING & PAPER FEEDING
Carriage PCB
CR encoder sensor
Paper width sensor
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
6-pin
Hook switch PCB
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
AC line
Line
External telephone
1
*
Mic
Head/
carriage
unit
1
*
1
*
MFC640CW
1
*
Confidential