Brother HL-2440 Service Manual page 166

■ Main PCB Circuit Diagram (4/4)
1
L A N I / F , U S B
@ C 2 1 T P 1 7 1
C 8 P @ R 5 2
A
0
@
@ X 1
1 M
0 V
H C M 4 9 2 5 . 0 0 0 0 0 M H Z
@ C 3 2
C 8 P T P 1 7
@ R 1 9 1 1 k
L A N _ R S T _ N
1 - 3 D
@ C 1 8 2
C 1 0 2 T
0 V @ R
0 V
4
L A N _ C S N
1 - 3 D
I O R D N
1 - 3 C /
I O W E N
1 - 3 C /
B
@ R 1 8 1
V D D 3
1 0 k
@ R 1 8 4 1 0
V D D 3
@ R 1 8 3 1
V D D 3
@ R 1 8 5 4 7
L A N _ I N T
1 - 1 D
T P 2 0 1
A D R [ 6 ] @ R 5 3 1 0 0
A D R [ 2 ]
4 5
A D R [ 3 ] @ R A 7
3 6
A D R [ 4 ] 1 0 0
2 7
A D R [ 5 ]
C
1 8
A D R [ 1 5 ]
@ R 6 0 1 0 0
A D R [ 2 2 - 1 ]
1 - 5 B / 2 - 1 C / 2 - 1 A / 2 - 1 B / 5 D
T P
D A T A [ 8 ]
4 5
D A T A [ 9 ] @ R
3
D A T A [ 1 0 ] 6
D A T A [ 1 1 ] 2 7
1 T
D A T A [ 1 2 ] 8
D
D A T A [ 1 3 ] 4 5
@ R
3 6
D A T A [ 1 4 ]
2
D A T A [ 1 5 ] 7
T
D A T A [ 0 ] 1 8
4 5
D A T A [ 1 ] @ R
3
D A T A [ 2 ] 6
D A T A [ 3 ] 2 7
1 T
D A T A [ 4 ] 8
D A T A [ 5 ] 4 5
@ R A
D A T A [ 6 ] 3 6
2
D A T A [ 7 ] 7
1 8
D A T A [ 1 5 - 0 ]
1 - 2 B / 2 - 1 C / 5 B
A D R E S S , D A T A B U S )
E
U S B C T L
1 - 3 D
T P
U S B D P
1 - 3 D
T
U S B D N
1 - 3 D
F
1
2 3
I / F , U S B H O S T , W i r e l e s s - L A N
T P 1 7 2 L A N _ A V D D 3
@ U 7 T P 2 3 3
6 2 6 4
L A
X T A L O U T R S E T _ B G 0 V
@ C 1 8 @ C 1 7
@ R 1 9 0
C 1 0 3 C 1 0 4
1 2 . 1 k
R 5 1 @ C
1 % ( F ) S P E E D : Y E L L O W 1 0
0 V L E D A L E
@ R 2
6 1 2 B 3 3 0 9
X T A L I N V D D 3 L E
( 1 6 0 8 )
4
6 1
g u a r d i n g
T P O + T D
7 g u a r d i n g 2
T P O - T D
1 7 3
R S T n C T
g u a r d i n g 7
R D
P 1 7 9
3 g u a r d i n g 8
T P I + R D
4
T P 1 6 8
T P I -
@ R 2 0 1 @ R 1 9 9
@ R 2 0 0 @ R 1 9 8 @ R 1
1 7 5 5 1 4 9 . 9 4 9 . 9 3 3 0 1 1
4 9 . 9 4 9 . 9
A E N / P S E N V D D 3 L E
1 % ( F ) 1 % ( F ) 1 % ( F ) 1 % ( F )
. 7 k 1 2
( 2 0 1 2 ) ( 2 0 1 2 ) ( 2 0 1 2 ) ( 2 0 1 2 ) ( 1 6 0 8 )
L E D B L E
5 2 2 B L I N K : G R E E N
C S n
T P 2 3 4 T P 2 3 2
4
N C N C
5 3 1 4 @ C 1 6 @ C 1 5 5
R D n I _ L K / A C T L E D B C 1 0 4 C 1 0 4 N C N C
2 - 4 A / 5 B 5 4 1 5 3 B 6
W R n I _ S P E E D L E D A N C N C
2 - 4 A / 5 B
1 6 3 A 1 3
T P 1 7 0 I _ F U L L / C O L 0 V F G
5 5 @ R 1 9 2 1 0 k 1 4
I O I S 1 6 n T P 2 3 8 0 V L A N _ F G F G
R J
2 1
T P 1 8 3 E E C S T P 1 8 1
k 2 2 2 0
E E E C K T P 1 8 4
P M
0 k 1 9
T P 1 8 2
E E D I O T P 2 3 9
2 3
I R Q
1
V C C 3 A 3 L A N _ A V D D 3
@ C 2 2 @ C 2 3 @ C 2 4
C 1 0 6
C 1 0 4 C 1 0 4
T P 2 3 7
5 0 2 ( 2 0 1 2 )
S A 0 G N D 3 A 3 0 V
T P 1 7 3
4 9
S A 1
4 8 5
S A 2 V C C 1 8 A 5 V C C 1 . 8 A
4 7
S A 3
4 6 6 0
S A 4 V C C 1 8 A 6 0
T P 1 7 6
4 5
S A 5 / F I F O _ S E L
@ C 1 8 1 @ C 1 8 4 @ C 3 3
C 1 0 4 C 1 0 4 C 1 0 6
( 2 0 1 2 )
6 3
G N D 1 8 A 6 3
8
G N D 1 8 A 8 0 V
5 6
T P 1 6 6 T C L K
5 7 1 0
T P 1 6 7 T E S T _ C K _ E N V C C 3 R 3 V D D 3
@ C 1 8 5 @ C 1 8 6
C 1 0 6
C 1 0 4
1 1 ( 2 0 1 2 )
G N D 3 R 3 0 V
1 2
T E S T 2
1 3
T E S T 1 0 V
1 2 6
4 2
S D 0
A 1 5 4 1
S D 1
3 3 4 0 4 4
S D 2 V C C 3 I O 4 4 V D D 3
3 9 2 5
S D 3 V C C 3 I O 2 5
P 1 7 7
3 8 @ C 1 7 9 @ C 4 1 @ C 4 4
C 4 3
S D 4
C 1 0 6
3 7
A 1 6
C 1 0 4 C 1 0 4 C 1 0 4 ( 2 0 1 2 )
S D 5
3 3 3 6 2 6
S D 6 G N D 2 6 0 V
3 5 V D D 3
S D 7 B L M 1 1
P 1 7 8
3 4
( 1 6
S D 8
A 1 7 3 3 9
S D 9 V 1 8 F V C C 1 . 8
T P 2 3 6
3 3 3 2 @ C 3 5 @
@ C 3 6
S D 1 0 C 1 0 6 V C C 1 . 8
C 1 0 4
3 1 ( 2 0 1 2 ) B L M 1 1 P
S D 1 1 0 V ( 1 6 0
P 1 8 0
3 0 2 4
S D 1 2 V C C K 2 4 V C C 1 . 8
2 9 4 3
1 8
S D 1 3 V C C K 4 3
3 3 2 8 5 9
S D 1 4 V C C K 5 9
2 7
S D 1 5 @ C 3 4 @ C 4 2 @ C 3 7
C 1 0 3 C 1 0 3 C 1 0 3
5 8
G N D 5 8
1 8
G N D 1 8 0 V
A X 8 8 7 9 6 B L F
T P 2 6 5 R 2 2
1 0 k
U S B V C C
1 - 2 D
R 2 3
U S B
T P 2 6 8 1 5 k
C N 2
C 1 2
R 3 3
C 1 0 1
1
P C 5 V
1 . 5 k 0 V
2 6 7 0 V
R 3 2
3
D P
2 4
P 2 6 6
R 3 1
2
D N
2 4
4
0 V G N D
C 1 9 C 2 0
R 3 0
C 6 8 P C 6 8 P
1 0 0 k
@ D A 1
0 V 5 F G
6
U S B _ F G F G
0 V
D F 5 A 6 . 8 F U ( F )
U B R 2 4 - 4 K 2 G 0 0
0 V
2 3
4 5 6
N
N 1
D Y _ C
D Y _ A
+
-
H C M 4 9 1 2 . 0 0
+ @ U 6
4 3
- X 1 i n
R 9 2
3 . 3 k
T P 1 3 0 2 1
D G _ A W L A N _ C S N C S
1 - 3 C 1 0 0 2 0 4 4
@ R 1 6 7 T P 1 2 8
D G _ C I O R D N R D X 2 o u t
1 - 3 C / 2 - 4 A / 1 B 2 2
T P 6 5
T P 2 2 @
I O W E N W R
6
1 - 3 C / 2 - 4 A / 1 B @ R 1 5 5
1 0 0
4
5
@ R 1 4 3 1 k T P 6 4
3 2 3 5
6 W L A N _ R S T N R E S E T H _ P S W 1
1 - 3 D 3 6
@ C 1 4 8
1 3 H _ P S W 2
C 1 0 4
1 4 T P 1 4 0 T P 7 4
@ R 1 5 0 0 V 3 0 4 2
L B C - 2 4 8 T C 1 W L A N _ I N T I N T 1 H _ O C 1
1 - 1 C 2 2 4 1
T P 7 2
H _ O C 2
3 1
I N T 2
4 9
D A T A [ 1 5 - 0 ] O T G _ D M 1
1 - 2 B / 2 - 1 C / 1 E 5 0
T P 1 2 2 O T G _ D P 1
@ R A 1 1
D A T A [ 8 ] 6 3
1 8
D 0
3 3
6 4
D A T A [ 9 ] 2 7
D 1
D A T A [ 1 0 ] 2 4 6
3 6
D 2 H _ D M 2
D A T A [ 1 1 ] 3 4 7
4 5
D 3 H _ D P 2
@ R A 1 2 T P 1 2 4
5
D A T A [ 1 2 ] 1
8 D 4
3 3
D A T A [ 1 3 ] 6
2 7
D 5
D A T A [ 1 4 ] 7
3 6
D 6
8 2 3
D A T A [ 1 5 ] T P 6 9
4 5
T P 1 2 5 D 7 T E S T 0
@ R A 1 3
D A T A [ 0 ] 1 0 5 9
1 8 T P 1 1 7
D 8 T E S T 1
3 3
D A T A [ 1 ] 1 1 6 0
2 7 T P 1 1 6
D 9 T E S T 2
1 2
D A T A [ 2 ]
3 6
D 1 0
D A T A [ 3 ] 1 3
4 5
D 1 1
@ R A 1 4 T P 1 2 7
1 5 3 8
D A T A [ 4 ] 1 8 T
D 1 2 C L K O U T
3 3
D A T A [ 5 ] 1 6
2 7
D 1 3
D A T A [ 6 ] 1 7
3 6
D 1 4
1 8 5 3
D A T A [ 7 ] T P 6 0
4 5 D 1 5 C P _ C A P 1
5 4
C P _ C A P 2
T P 1 2 0 T P 6
@ R 1 6 5 6 1
A D R [ 9 ] A 0
T P 1 2 1
1 - 5 B / 2 - 1 C / 1 C 1 0 0 6 2 5 6
0 V A 1 V d d _ 5 V
@ R 1 6 6 1 0 k
T P 6 2
@
5 5
T P 7 1 V b u s
2 4
D R E Q 1
2 5 4
T P 7 0
D R E Q 2 V c c 4
1 4
T P 6 8 V c c 1 4
@ R 1 4 9 1 0 k 2 8 2 6
V D D 3 D A C K 1 V c c 2 6
2 9 4 0
D A C K 2 V c c 4 0
T P 2 3 5 @ R 1 4 4 1 0 k T P 6 7 5 2
@ L 1 V c c 5 2
L A N _ A V D D 3 5 8
P 3 0 0 S V c c 5 8
0 8 )
T P 2 8
@ R 9 4 1 0 0 k
3 3
V D D 3 H _ S U S P E N D / W A K E U P
T P 1 7 5
L 3 1
V C C 1 . 8 A D G N D 1
T P 2 7
@ R 9 3 1 0 0 k
3 0 0 S 3 4 9
8 ) D _ S U S P E N D / W A K E U P D G N D 9
1 9
D G N D 1 9
T P 1 8
3 9 2 7
G L D G N D 2 7
3 7
T P 1 6 D G N D 3 7
@ R 1 0 6 1 0 k
4 5 5 7
V D D 3 O T G M O D E D G N D 5 7
T P 1 5
1 0 k
@ R 1 0 8 4 8 5 1
0 V I D A G N D
I S P 1 3 6 2 B D
@ R 1 0 7 1 0 k
V D D 3
4 5 6
6-4
7 8
A
@ D 2 R B 7 5 1 V - 4 0
@ C 1 0 2
0 0 0 M H Z
C 2 2 P
T P 2 3
@ X 3
@ U 2
1
4 5
V D D 5 V D D V O U T
0 V
@ C 8 5
T P 1 9 T P 5 8 @ C 9 9
@ C 8 6 3
2 C 1 0 6
C 1 0 4 N C C 1 0 6
@ C 1 0 0
( 2 1 2 5 )
( 2 1 2 5 )
R 9 1 @ C 1 0 1 0 V C 1 0 4
8 0
C 2 7 P 1 2
0 . 5
C E G N D 0 V
R 1 1 7 0 H 3 3 1 B - T 1 - F
T P 2 6
T P 9
T P 2 4 B
W L A N _ P W R _ O N
1 - 3 E
T P 2 5
V D D _ 5 V W i r e l e s s L A N
7 D
( S t r a i g h t )
@ C N 1 1
T P 6 3 2
+ 3 V
T P 5 9
5
0 V G N D
@ R 1 1 0
2 2
T P 2 0
4
D A T A -
T P 1 7 3
D A T A +
@ R 1 0 9 2 2 @ C 1 1 3 @ C 1 1 4
C 4 7 P
C 4 7 P
1
N C R E S E T
@ R 1 5 6 1 0 0 k
V D D 3
C
@ R 7 6 1 0 k
6
0 V F G
0 V
@ R 7 5 1 0 k B 6 B - P H - K - K ( L F ) ( S N )
F G _ W L A N
P 2 1
@ C 1 5 1
C 8 2 3
1 O T 2
V D D _ 5 V
7 B
V D D 3
@ C 1 5 4
R 7 7 1 0 k C 1 0 3
@ L 4 ( 1 6 0 8 )
0 V T P 6 6 0
V D D 3
D
0 V
E
F
NAME CIR B512257
CODE LV0034-001 (4/4)
C R 5 0 0 0 7 8
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