Brother DCP-7030 Service Manual page 236

■ NCU PCB circuit diagram : USA/Canada
1
A
CML
6B
L3
R41-4910-A
D4
RA-351M-V6-2
XX
3
L2
XX
4
(LINE)
FG
7
NC
FG
8
D5
J2
RA-242M-C6
D6
RA-242M-C6
J1
B FG
8
FG NC
7
FG NC
(EXT)
4
XX
3
XX
L1
R41-4910-A
TELOFF
6B
TLP320
+5V
C @Q1
C B
@C6
E C5395
C10
+
@R9
150
GND
285D-D440J-111
@L5
XX
1
XX
2
@L4
GND
XX
3
@L7
(H.S) XX
4
@L6
GND
5
GND NC
6
@J3
D
1
2 3
+24V
D7
1SS120
SW1
11 12
R7 100 2W
2
7
1
@T1
A5X-24E-908
NC
JW1 BT-17
PLS
6C
A
C
R2 R3
C1
24k
E
K
@PH1
C474
PS2533-1
250V
GND
PH2
GND
These components are mounted for SF Models only.
TELRL
6B
+5V
@R20
100
C104
@C10
C471
C104
@C13
10V
@R24
2.7k C470
@R15 150k
@C17
@R22
C104
GND
24k
U1
BA10358
@C12
C101 6 -
7
+
5
@R21
@C15
24k
C104 @R13
@R19
3.3k
2.7k
@R17 @C14
C103
150k
C471
GND
C104
GND
REF
2 3
4
C4 C103
C5
@C3 C10
50V
35V
+ +
@R8 510
R10
2.7k
C7
C104
R11
GND
4.3k
C101
C104
R12
100k
PH3
TLP421
24k
R16 100k
CI
A C 6B
R27
C19
4.7k
D3
E C222
1SS120
K
GND
REF
L8
FG GND
JW4
JW3
GND GND
JW2
TELSL
6B
4
6-4
5
C2.2
SL
6B
C221
@C9
R14 100k
+5V
C102
8
C104
- U1
2
RL1
BA10358
1
6B
+
3
C8
R23
C104
4 3.3k
P1
11 TELRL
TELRL
2C
GND 10 TELSL
TELSL
GND
3D
9 +24V
+24V
8 CML
CML
R28 @C18
2A
100k C221
7 CI
CI
4B
6 GND
GND
5 TELOFF
TELOFF
2C
4 +5V
+5V
REF
3 SL
SL
5A
2 RL1
RL1
5B
1 PLS
PLS
2B
B11B-PH-K-S
+5V
R18
620
REF
C16
R25
6.3V
620
C470
GND
5
6 6 6 6 6 6 6
A
SF SF
B
US CAN
FB FB
US CAN
C
D
6 6 6 6 6 6 6
Confidential