Yamaha RX-V681 Service Manual page 115

A B C
1
DIGITAL 5/7
DIGITAL (1)
to DIGITAL 7/7
2
C B 9 5 3
D G N D
1
2
NETWORK
3
(NET)
7
8
E t h e r n e t
4
5
H A N R U N Z F 2 8 6 6 0
6
S U N J U N Z F 2 8 6 7 0
H R 9 0 3 1 2 5 C
3
D G N D
D G N D
D i f f e r e n t i a l I m p e d a n c e 1 0 0 o h m
4
N C P U _ S P I _ M O S I
N C P U _ S P I _ M I S O
N C P U _ S P I _ N _ C S
to DIGITAL 4/7
N C P U _ A D T _ M U T E
5
6
Page 118 K7 C B 9 5 1
V B U S
to OPERATION (1)_W310 1
D -
2
(RX-V681)
U S B D +
3
C 9 5 0 2
G N D
4 D G N D
n o _ u s e
Page 121 J7
F G
5
to OPERATION (12)_W309
P H L
J 9 5 0 1
V B 8 5 8 4 0 C 9 5 0 1
(RX-A760) n o _ u s e
1 0 0 0 P ( B )
7
D G N D
8
9
N O T I C E R E S I S T O R
( m o d e l )
R E M A R K S P A R T S N A M E
J J A P A N
U U . S . A N O M A R K C A R B O N F I L M R E S I S T O R ( P = 5 )
C C A N A D A C A R B O N F I L M R E S I S T O R ( P = 1 0 )
M E T A L O X I D E F I L M R E S I S T O R
R G E N E R A L ★ All voltages are measured with a 10M Ω /V DC electronic voltmeter.
T C H I N A M E T A L F I L M R E S I S T O R
★ Components having special characteristics are marked ⚠ and must be replaced
K K O R E A M E T A L P L A T E R E S I S T O R
F I R E P R O O F C A R B O N F I L M R E S I S T O R with parts having specifications equal to those originally installed.
A A U S T R A L I A
B B R I T I S H C E M E N T M O L D E D R E S I S T O R ★ Schematic diagram is subject to change without notice.
G S T A N D A R D S E M I V A R I A B L E R E S I S T O R
C H I P R E S I S T O R
L S I N G A P O R E
E S O U T H E U R O P E
C A P A C I T O R
V T A I W A N
R E M A R K S P A R T S N A M E
F R U S S I A N
Details of colored lines
N O M A R K E L E C T R O L Y T I C C A P A C I T O R
P L A T I N A M E R I C A
T A N T A L U M C A P A C I T O R
S B R A Z I L
10 N O M A R K C E R A M I C C A P A C I T O R
H T H A I
C E R A M I C T U B U L A R C A P A C I T O R
P O L Y E S T E R F I L M C A P A C I T O R
P O L Y S T Y R E N E F I L M C A P A C I T O R
M I C A C A P A C I T O R
P P O L Y P R O P Y L E N E F I L M C A P A C I T O R
S E M I C O N D U C T I V E C E R A M I C C A P A C I T O R
P O L Y P H E N Y L E N E S U L F I D E F I L M
S
C A P A C I T O R
D E F
N C P U _ A D T _ B C K
N C P U _ A D T _ W C K
N C P U _ A D T _ S D O
N C P U _ A D T _ M C K
L 9 5 0 3
4 1
3 2
E X C 2 4 C E 9 0 0 U
L 9 5 0 4
4 1
3 2
E X C 2 4 C E 9 0 0 U
N C P U _ S P I _ S C K
N C P U _ N _ R S T
N C P U _ A M U T E
N C P U _ M O S I
N C P U _ M I S O
N C P U _ N _ I N T
N C P U _ P H O L D
N C P U _ V B U S D R V
U S B _ V B U S _ P O N
U S B _ V B U S _ P R T
D S P _ P O N
N C P U _ P O N
4.987V
+ 5 N E T
+ 5 . 6 V
+ 3 . 3 N B
+ 5 . 6 V + 3 . 3 N B
R 1 1 7 2 H 5 0 1 D - T 1 - F
L 9 5 0 2
B L M 2 1 P G 6 0 0 S N 1 D
4 5
n o _ u s e I C 9 5 1 + 5 N E T
R P 1 3 0 Q 3 3 1 D - T R - F 3 2 1 I C 9 5 4
T C 7 S E T 0 8 F U
4 3 V +
I C 9 5 5
5 I C 9 5 4
I C 9 5 4
1 2 3
V -
D G N D
D G N D
D G N D
D G N D
: L 9 5 0 1
J 9 5 0 2
E X C 2 4 C E 9 0 0 U
n o _ u s e n o _ u s e
1 4
2 3 C 9 5 0 3
L 9 5 0 1
D i f f e r e n t i a l I m p e d a n c e 9 0 o h m
A V R L 1 6 1 A 1 R 1 N T B A V R L 1 6 1 A 1 R 1 N T B
D G N D
U S B p o w e r p r o t e c t i o n
D G N D
V
DD
CE
Red / full line: Power supply (+)
Red /dashed line: Power supply (-)
Orange: Signal detect
Yellow: Clock
Green: Protection detect
Brown: Reset signal
Blue: Panel key input
G H
RX-V681 RX-A760
1 3 4 2 0 3 5 6 0 W 3
C B 9 5 2
E T H _ R X _ M
1 2
E T H _ R X _ P N C P U _ A D T _ M C K R
3 4
E T H _ T X _ M
5 6
E T H _ T X _ P N C P U _ A D T _ S D R 0
7 8
N C P U _ A D T _ W C K R
1 0 9
N C P U _ S P I _ S C K N C P U _ A D T _ B C K R
1 2 1 1
N C P U _ S P I _ M O S I
1 4 1 3
R 9 5 1 0 N C P U _ S P I _ M I S O N C P U _ Z _ A U P _ M C K X
1 6 1 5
3 3
N C P U _ S P I _ N _ C S
1 8 1 7
N C P U _ Z _ A U P _ B C K X
/ O E D I R O U T
2 0 1 9
R 9 5 2 0
N C P U _ N _ R S T N C P U _ Z _ A U P _ W C K X L L B A
2 2 2 1
n o _ u s e L H A B
R 9 5 1 3 N C P U _ M U T E 0 N C P U _ Z _ A U P _ S D X 0
2 4 2 3 H X H i Z
3 3
N C P U _ M U T E 1
2 6 2 5
N C P U _ R X D N C P U _ A U P _ M C K X R 9 5 1 6 B 8 G N D
2 8 2 7
R 9 5 1 4 1 0 K
N C P U _ T X D B 7 A 8
3 0 2 9
3 3 N C P U _ A U P _ B C K X B 6 A 7
3 2 3 1
N C P U _ N _ I N T N C P U _ A U P _ W C K X B 5 A 6 R 9 5 0 3
3 4 3 3
4 7
D B G _ U A R T _ T X D N C P U _ A U P _ S D X 0 B 4 A 5
3 6 3 5
R 9 5 1 1 N C P U _ A D T _ M U T E N C P U _ A U P _ S D X 3 B 3 A 4
3 8 3 7
3 3 X 4 N C P U _ P H O L D N C P U _ A U P _ S D X 2 B 2 A 3
4 0 3 9
R 9 5 1 2
N C P U _ V B U S D R V N C P U _ A U P _ S D X 1 B 1 A 2
4 2 4 1
3 3 4.975V
U S B _ V B U S G A 1
+ 3 . 3 V M M C
4 4 4 3
U S B _ D M A P _ S C L V C C D I R
4 6 4 5
A P _ S D A
4 8 4 7
3.323V
+ 3 . 3 V M M C C 9 5 0 6
L 9 5 0 5
5 0 4 9
U S B _ D P D B G _ U A R T _ R X D
B K P 1 0 0 5 H S 6 8 0 - T 0 . 1 / 1 0 ( B J )
5 2 5 1
+ 5 N E T
+ 5 N E T + 3 . 3 N B
5 4 5 3
4.987V 4.987V
5 6 5 5
Q 9 5 0 1
J 9 5 0 5 + 5 W L A N + 5 N E T J 9 5 0 6
5 8 5 7
0 + 5 W L A N + 5 N E T 0
6 0 5 9
D T C 0 4 4 E U B T L
D G N D
D G N D
to Network module
D G N D
R 9 5 1 9
1 0 0
M F I 3 3 7 S 3 9 5 9
+ 3 . 3 V M M C G N D
S D A
A s i d e
No replacement
part available.
A p p l e C o P r o c e s s o r
n o _ u s e
D E B U G
IC951: R1172H501D-T1-F IC954 : TC7SET08FU
Voltage regulator 2 input AND gate
IN B 1 5 VCC
4 5 V
OUT
IN A 2
GND 3 4 OUT Y
A B Y
Vref
L L L
L H L
Current Limit
GND
1 2 H L L
H H H
Pin No. Symbol Description
1 CE Chip Enable Pin ("H" Active)
2 GND Ground Pin
3 NC No Connection
4 V Input Pin
DD
5 V OUT Output Pin
I J K
S T 9 5 1
D G N D
N C P U _ M C K : 2 4 . 5 7 6 M H z
N C P U _ M C K
I C 9 5 2 N C P U _ B C K
X 7 7 8 7 A 0 : T C 7 4 L C X 2 4 5 F T ( E L
N C P U _ W C K
Y G 2 6 3 A 0 : 7 4 L V C 2 4 5 A P W
N C P U _ S D 0
R 9 5 0 5
4 7
R 9 5 1 5
4 7
N C P U _ S D 3
4 7 X 4
N C P U _ S D 2
R 9 5 0 4
N C P U _ S D 1
+ 3 . 3 V M M C
I C 9 5 3
V C C
R S T
S C L
0 . 1 / 1 0 ( B J )
C 9 5 0 7
D G N D D G N D
S h e e t 5 : N E T
I C / C B / X L : 9 5 1 - 9 5 9
O H T E R : 9 5 0 1 - 9 6 9 9
IC952 : TC74LCX245FT
Low-Voltage Octal Bus Transceiver
DIR Vcc
1 20
A1 2 19 OE
A2 3 18 B1
A3 4 17 B2
A4 B3
5 16
A5 6 15 B4
A6 7 14 B5
A7 8 13 B6
A8 9 12 B7
GND 10 11 B8
L M N
RX-V681/RX-A760
to DIGITAL 7/7
to DIGITAL 6/7
115