Brother International HL-3400CN Service Manual - Page 116
iff.i-., 1,1:1%'<<, tClea, cnher, Cleaner
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HL-3400CN SERVICE MANUAL 2.6 Connection Diagram CONNECTION DIAGRAM HIGH-VOLTAGE POWER SUPPLY UNIT o giN 101 HVPS Paper Discharger &Charger FUSING UNIT 4 Fuser Corrector Therrnistor HR.Heater BR .Heater HP HN c r, s° , TF 1 2 To Duplex Unit AC IN PUT LOW-VOLTAGE POWER SUPPLY UNIT HTFAN Papoerr"Heater Fan O= PS6 Cleaning Roller I ps, I= Sensor Paper E rat PS2 Sensor Toner K o TNK Renr:oPrn Oil Sensor Belt Sensor DPJ Ins I l= Control Fan CTFAN IOD1 PWB • 8354883. 1:1 23. TolOD2 ECN2 DM Motor Erase Lam I TPD Toner Sensor TTR Toner Sensor PSU Paper iff.i-. -:1,1:1%'
HL-3400CN
SERVICE
MANUAL
2.6
Connection
Diagram
CONNECTION
DIAGRAM
HIGH
-VOLTAGE
POWER
SUPPLY
UNIT
giN
101
HVPS
o
Paper
Discharger
FUSING
UNIT
Fuser
Corrector
AC
IN
PUT
4
HP
°
HN
TF
1
c
r,
s
,
&Charger
Therrnistor
HR.Heater
BR
.Heater
2
To
Duplex
Unit
IOD1
PWB
HTFAN
Heater
Fan
O=
Paper
o
r"
Cleaning
Roller
I
ps,
I=
Sensor
PS6
Paper
E
rat
Sensor
Toner
o
K
Ren
r
:oP
rn
Oil
Sensor
Belt
Sensor
PS2
TNK
DPJ
Ins
I
l=
Control
Fan
CTFAN
•
8354883
.
1:1
23.
TolOD2
ECN2
DM
Motor
I
TPD
TTR
PSU
Erase
Lam
Toner
Sensor
Toner
Sensor
Paper
iff.i-.
-
:1,1:1%'<<
(
g
i
g)
LOW
—VOLTAGE
POWER
SUPPLY
UNIT
Controller
PCB
a7B.
ti
R
010e
,
-
ii
MCTL
PWB
PANEL
PWB
aj
o
DSW1
8
4
Folt
DSVV2
DCN5
DSW3
Inter
lock
Switch
PANEL
PWB
LCD
PCB
Fig.
4-42
=II
PS1
I
PS4
OHP
Sensor
Paper
Empty
Sensor
Paper
Feeding
Sensor
Encoder
Sensor
CN
DUP
02/
Duplex
Unit
LASER
UNIT
SCM
Scanner
M
r
LDU
PCB
CCN1
11
OD3(1)
CCN3
13
LOWER
TRAY
UNIT
[LFU1]
CCN5
CCN2
6
CCN4
1
4
—
Mal
E
)
.„
..
Interlock
SNnitch
I
OD3(2)
PSL
FDCL
PKCL
OHP
Sensor
Paper
Sensor
Pap
i
Sensor
P
aper
Feeding
Clutch
P
aper
Pick-up
Clutch
[LFU2]
—ICEE
Interlock
Ssnitch
S
)
I
e
Jt:I
l-
i
o
r<
er
Developer
lDe
uveloper
T:
l
De
t
v
it
C
:l
h
o
r
r
DC
LK
DC
LY
DC
LM
DCLC
I
I
DUP
CN
Duplex
Unit
PEL2
PSL2
FDCL
PKCL
OHP
Sensor
Paper
Empty
Sensor
Paper
Size
Sensor
P
aper
Feeding
Clutch
Paper
Pick-up
Clutch
Motor
I
OD2
PWB
t=3.
-
0
0
Wast
Toner
Sensor
(LED)
I
pq
'
TEFL
•W
Zn
a
=
PDU
PCB
To
10D1
DCN10
Pry
;WI
19
3HP
GHP
1
2
(MC
PSL
)
itzi*
tzt
-
23
91
B.
PSL
( )
PC,LU
OVA
Position
n
Position
Cam
i
egapherJill
Paper
Ozone
Sensor
Sensor
2
FBCL
FUCL
21:tClea
cnher
Cleaner
Cam
Clu
Fuser
Clutch
u
ugrn
R
rul
i
ch
rati°n
C
4-65