Brother MFC-3340CN Service Manual page 367

Head PCB
Carriage PCB
CN7
MFC3340CN
Media 1
SM/xD
/MS/SD
CN6
Media 2
CF
CN22
USB
CN23
MFC3340CN
LAN FAX1940CN
Scanner
CIS unit
motor
Main PCB
Control panel PCB
Carriage
(Document front Sensor PCB
motor
and rear sensors) (Registration
sensor)
(Cover open sensor)
(PF encoder
sensor)
Ink cartridge PCB Maintenance
unit
Paper
Backup
feed
battery
motor
FAX1940CN
CN18-2 -1
La
La CN5
-1 CN1-2
Lb Lb
LINE
CN16-2
-2
+30V +30V
-1 CN3-1
RDPS EXT
MJ PCB
CN4
CN15-5
-2
POL
POL
-4 CN2-1
S0V
S0V
EXT
-3
TELOFF
-2
CHRG
-1
GIJI
CN17-2
VOUT2
Speaker
-1
VOUT1
CN9-6 -1 CN1-6
LEDPWR LEDPWR
FG
-5
-5 -2
HOOK
HOOK FG FG
Hook
-4 -3 -4
TELSL2 TELSL2 TELSL2
switch
-3 -4 -3
TELRL2 TELRL2
TELRL2
PCB
-2 -5 -2
TELRL1 TELRL1 TELRL1
-1 CN2-6 -1
TELSL1 TELSL1 TELSL1
+30V CN8-4
-3
+30V
Power supply PCB
-2
PGND
-1
PGND
FAX1940CN/1840C
Handset
Confidential