Yamaha RX-V681 Service Manual page 119

A B C
1
OPERATION 2/3
O P E ( 2 )
V I D E O
2
3 4 1 - 3 6 0
3 4 0 1 - 3 6 0 0
3
P J 3 4 1
4
C 3 4 0 6
AV 1 A A V V 1 1 _ _
A V 1
1 0 / 1 0
Y
A V 2
C 3 4 0 7
AV 2 A A V V 2 2 _ _
1 0 / 1 0
C 3 4 0 8 A A V V 1 1 _ _ P P
AV 1
A V 1
1 0 / 1 0
COMPONENT
P b
VIDEO
5 A V 2
C 3 4 0 9
A A V V 2 2 _ _ P P
AV 2
1 0 / 1 0
C 3 4 1 0
AV 1 A A V V 1 1 _ _ P P
A V 1
1 0 / 1 0
P r
A V 2
C 3 4 1 1
AV 2 A A V V 2 2 _ _ P P
1 0 / 1 0
R J - 1 1 4 6 + 0 8 - 0 H 0 0
6
P J 3 4 2
A V 5
1 0 / 1 6
AV 5
C 3 4 1 2
VIDEO
7
Y
A V 6 1 0 / 1 6
AV 6
C 3 4 1 3
M O N O U T
COMPONENT
P b
VIDEO
MONITOR
OUT
C V B S
8 VIDEO
P r
1 1 4 6 # 5 S - 0 H 0 0 A
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
Page 118 I8
to OPERATION (1)_CB306
t o O P E ( 1 )
P N 3 4 1
n o _ u s e
Y Y
C 3 4 1 7
A D _ P r R 3 4 1 7 7 5 0 . 1 / 1 6 V -
M O N _ P r R 3 4 1 8 7 5 B I A S P R 2
R 3 4 1 9 7 5 P R O U T
A D _ P b
Y Y
R 3 4 2 0 7 5 B I A S P B 2
M O N _ P b
A D _ Y R 3 4 2 1 7 5 P B O U T
R 3 4 2 2 7 5 B I A S Y 2
M O N _ Y
C 3 4 1 8 Y O U T
b b 0 . 1 / 1 6 V +
C 3 4 1 9 V -
R 3 4 2 5 7 5 0 . 1 / 1 6 V O U T 2
A D _ V
R 3 4 2 6 7 5 B I A S V 2
M O N _ V
C 3 4 2 0
V O U T 1
V +
0 . 1 / 1 6
b b
C 3 4 3 3
r r
r r
A V 5 _ V
M O N _ Y
A V 6 _ V
M O N _ P b
M O N _ V
+ 3 . 3 V
M O N _ P r
Page 114 F9
to DIGITAL (1)_CB76
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
Page 120 L4
to OPERATION (4)_CB383 to AM/FM TUNER
t o T U N E R P a c k
t o O P E ( 4 )
B t o B
5 2 4 1 8 5 2 0 4 5
S T 3 4 1
+ 3 . 3 T
+ 7 A
+ 5 A E
1 0 0 P ( S L )
T E
P S 2 _ P R T
3.296V
+ 3 . 3 V
3.282V
- 3 . 3 V
1 0 0 / 1 6
C 3 4 4 0
1 0 0 / 1 6
C 3 4 3 9
0 . 1 / 1 6
V +
C 3 4 4 1
N C
P S V I D _ S D A
0 . 1 / 1 6 0 . 1 / 1 6
C 3 4 4 2
Y O U T _ L O S
Y I N _ L O S 4 7 K V I D _ S C L
3 D
Y L O S R 3 4 3 1
G
V - 0 . 1 / 1 6 5
6 D
Y L O S O U T C 3 4 4 3 4 S
G
G N D
2
S D A 1 S
S C L
V D D
V L O S O U T
V E
t o D I G I T A L
I J K
Page 120 I7
to OPERATION (3)_W3705
n o _ u s e
n o _ u s e C 3 4 4 9
C 3 4 4 7 1 0 0 P ( S L )
C 3 4 7 0 C 3 4 7 2 C 3 4 7 1
C 3 4 5 0
n o _ u s e n o _ u s e
n o _ u s e
3.306V
+ 3 . 3 T
C 3 4 4 8
T E + 5 A E
+ 7 A R P 1 7 0 H 3 3 1 B - T 1 - F
L 3 4 3
V D D V O U T
G N D 1 0 0 U H
N C C E
J 3 4 0 4
n o _ u s e
T E
R P 1 7 0 H 3 3 1 B - T 1 - F
V D D V O U T
G N D
N C C E
V E
V +
I C 3 4 6 I C 3 4 6 5
2
V -
Q 3 4 1 3
2 N 5 4 0 1 C - A T / P
C 3 4 5 3 C 3 4 5 8
0 . 1 / 1 6 0 . 1 / 1 6
R 3 4 8 0
1 0 K
J 3 4 0 5
n o _ u s e
T E V E + 5 A E
OPERATION (2)
C V B S
P J 3 6 1
A V 3
AV3
1 0 / 1 6
C 3 6 0 1
VIDEO
A V 4
AV4 1 0 / 1 6
C 3 6 0 2
R J - 1 0 7 8 _ 0 4 - 0 3 5 1
3 6 1 - 3 6 5
3 6 0 1 - 3 6 5 0
OPERATION (9)
L M N
RX-V681/RX-A760
IC342, 344 : RP170H331B-T1-FE
Voltage regulator
V V
DD 5 1 OUT
Vref
Current Limit
Thermal Shutdown
CE 3 2 GND
Pin No. Symbol Description
1 VOUT Output Pin
2 GND Ground Pin
3 CE Chip Enable Pin
4 NC No Connection
VDD Input Pin
5
3.296V
+ 3 . 3 V
IC346: BD7541G-TR
Input/output full swing CMOS operational amplifier
IN+ 1 5 VDD
+
VSS 2
–
4
IN- 3 OUT
- 3 . 3 V
3.282V
IC341: NJW1329FH3
Multi input wide band video interface with I 2 C control
V LOS detect Y LOS detect
50
VIN1
46
VIN2
45
VIN3 44
VIN4 43
6dB 75 ohms 38
VIN5 42
VIN6 41
VIN7 40
6dB 36
75 ohms
10
YIN1 16
YIN2 17
6dB 75 ohms 33
YIN3 18
PBIN1
20
PBIN2
21 6dB
75 ohms 31
PBIN3
22
O P E ( 9 )
PRIN1
24
PRIN2
V E 5 2 0 4 5 25 6dB
75 ohms 29
0V
PRIN3 26
A V 3 _ V
0V
V E
t o O P E ( 2 )
0V
A V 4 _ V
0V
V E
0V
C B 3 6 1
BIAS I2C BUS
119