Chapter 6 Circuit Diagrams, Wiring Diagram - Brother HL-2440 Service Manual

CHAPTER 6 CIRCUIT DIAGRAMS, WIRING DIAGRAM

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