Samsung ML-451 Series Service Manual page 229

5.4. Connection Diagram3
C N 1
S M P S P O W E R 3 ( 9 . 6 m m )
5 V 1
G N D 2
2 4 V 3
G N D 4
2 4 V 5
C N 2
S M P S E N A B L E 1 ( 5 . m m )
E N _ 2 4 V 4 ( 8 O l n ) y 1
E N _ 2 4 V 4 ( 5 O l n ) y 2
D G N D 3
C N 1
F D B C O N T R O L L 2 ( 0 . m
D G N D
R E L A Y _ O N O / F F
N ( C )
H E A T E R _ O N 2 S ( d i ) e
H E A T E R _ O N 1 C ( e n e t ) r
4 2 V S 1
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C N 1
S M P S P O W E R 3 ( 9 . 6 m m )
2 4 V 1 1
G N D 2
2 4 V 2 3
G N D 4
2 4 V 2 5
G N D 6
5 V 7
G N D 8
5 V 9
C N 2
S M P S E N A B L E 1 ( 5 . m m )
E N _ 2 4 V 4 ( 8 O l n ) y 1
E N _ 2 4 V 4 ( 5 O l n ) y 2
D G N D 3
J 9 -
J 8 -
J 7 -
J 6 -
J 5 -
J 4 -
J 3 -
J 2 -
J 1 -
J 2 - 0
J 1 - 9
J 1 - 8
J 1 - 7
J 1 - 6
J 1 - 5
J 1 - 4
J 1 - 3
J 1 - 2
m )
6
5
4
3
2
1
O u t t r e T E M P / H u m d i t i y
S e s n r o
S M P S F a n
J C 3 1 0 - 0 0 8 5 A
C N 8
S M P S P O W E R ( . 3 6 9 m m )
1 2 4 V 1
2 D G N D
3 2 4 V 2
4 D G N D
C N 3 2
5 2 4 V 2
S M P S P O W E R ( . 3 6 9
6 D G N D
1 5 V S M P S
2 D G N D
3 5 V S M P S
C N 9
S M P S E N A B L E 1 ( 5 . m m )
1 E N _ 2 4 V 4 ( 8 O l n ) y
2 E N _ 2 4 V 4 ( 5 O l n ) y
3 D G N D
C N 1 7
S C F 1 ( 5 . m m )
1 2 4 V 2
2 2 4 V 2
3 2 4 V 2
4 5 V
5 5 V
6 5 V
n R E S E T _ S C F
7
S C F _ T X D
8
S C F _ R X D
9 Main board
n P O W E R _ S A V E _ S C F
1 0
n S C F _ C M D _ R E Q
1 1
D G N D
1 2
D G N D
1 3
D G N D
1 4
1 5 D G N D
1 6 D G N D
1 7 D G N D
1 8 D G N D
C N 2 9
F D B & H U M I & S M P S F A N 1 ( 5 . m m )
1 D G N D
2 E N _ R E L A Y _ A C
3 ( N C . )
4 n F U S E R _ E N 2
5 n F U S E R _ E N 1
6 2 4 V S 1
7 O U T T E R _ T E M P
8 D G N D
9 H U M D I T I Y
1 0 5 V
1 1 P W M _ S M P S _ F A N
1 2 D G N D
C N 3 0
F U S E R T H E R M 1 ( 5 . m m )
1 F U S E R _ C R U M 1
2 D G N D
3 3 3 . V A
4 F U S E R _ T H E R M _ S
5 3 3 . V A
6 F U S E R _ T H E R M _ C
7 D G N D
8 N C T H _ C
9 N C T H _ D
1 0 D G N D
5. System Diagrams
m m )
5-4