Yamaha RX-V381 Service Manual page 96

A B C
RX-V381/HTR-3069
1
MAIN 1/3
Q 1 3
2
F L
A 1 1 4 5 ( O / Y )
C 3 3
Q 1 Q 7 2 2 P / 5 0 0
C 2
F L R 4 R 3 5
1 K 3 3 K
1 0 / 5 0
C 2 7 1 3 ( G R ) C 2 7 1 3 ( G R )
D 3
FRONT L
n o _ u s e
R 1 7
3 3 K
P O E
3
Q 1 4
F R
A 1 1 4 5 ( O / Y )
C 3 4
Q 2 Q 8 2 2 P / 5 0 0
C 3
F R R 5 R 3 6
1 K 3 3 K
1 0 / 5 0
C 2 7 1 3 ( G R ) C 2 7 1 3 ( G R )
D 4
to MAIN
n o _ u s e
2/3
R 1 8
4
3 3 K
P O E
Q 1 5
C
5 A 1 1 4 5 ( O / Y )
CENTER
C 3 5
2 2 P / 5 0 0
Q 3 Q 9
C C 4
R 6 R 3 7
1 0 / 5 0 1 K 3 3 K
C 2 7 1 3 ( G R ) C 2 7 1 3 ( G R )
D 5
n o _ u s e
R 1 9
3 3 K
P O E
6
n o _ u s e
Q 1 6
S W
A 1 1 4 5 ( O / Y )
C 3 6
Q 4 Q 1 0 2 2 P / 5 0 0
C 7
S W R 1 R 9 R 3 8
1 0 0 1 K 3 3 K
1 0 / 5 0
C 2 7 1 3 ( G R ) C 2 7 1 3 ( G R )
D 6
7
n o _ u s e
R 2 0
3 3 K
P O E
C 8
R 1 0
n o _ u s e n o _ u s e
8
Q 1 7
S L
A 1 1 4 5 ( O / Y )
C 3 7
Q 5 Q 1 1 2 2 P / 5 0 0
C 5
S L R 7 R 3 9
1 K 3 3 K
1 0 / 5 0
C 2 7 1 3 ( G R ) C 2 7 1 3 ( G R )
D 7
SURROUND L
n o _ u s e
R 2 1
3 3 K
9
P O E
to MAIN
2/3
Q 1 8
S R
A 1 1 4 5 ( O / Y )
C 3 8
2 2 P / 5 0 0
Q 6 Q 1 2
S R C 6 R 8 R 4 0
1 0 / 5 0 1 K 3 3 K
C 2 7 1 3 ( G R ) C 2 7 1 3 ( G R )
10 D 8
n o _ u s e
R 2 2
3 3 K
P O E
96
D E F
I N A 6 0 0 2 A C 1 - T H 1 2
1 0 K
R 1 7 3
Q 6 1
4 7 K
R 1 7 4
Q 3 1
C 5 1 9 8 - O ( S 1 / E / S )
Q 4 3 R 1 6 1
R 1 1 9
C 4 4 8 8 ( S / T ) 4 7 K
Q 5 5
1 / 2 P 1 0 . 0
R 1 3 7
Q 1 9
4 . 7 K
I N C 6 0 0 2 A C 1 - T 1 1 2
C 4 1 1 5 S
R 1 6 7
5 6 K
Q 4 4
R 1 2 0
Q 3 2
1 / 2 P 1 0 . 0
A 1 9 4 1 - O ( S 1 / E / S )
A 1 7 0 8 ( S / T )
Q 2 5
R 6 5
4 7 K
R 5 3
1 0 K
Q 3 3
C 5 1 9 8 - O ( S 1 / E / S )
Q 4 5 R 1 6 2
R 1 2 1
C 4 4 8 8 ( S / T ) 4 7 K
Q 5 6
1 / 2 P 1 0 . 0 R 1 3 8
Q 2 0
4 . 7 K
I N C 6 0 0 2 A C 1 - T 1 1 2
C 4 1 1 5 S
R 1 6 8
4 7 K
Q 4 6
R 1 2 2
Q 3 4
1 / 2 P 1 0 . 0
A 1 9 4 1 - O ( S 1 / E / S )
Q 2 6
R 6 6 A 1 7 0 8 ( S / T )
4 7 K
R 5 4
1 0 K
Q 3 5
C 5 1 9 8 - O ( S 1 / E / S )
Q 4 7 R 1 6 3
R 1 2 3
4 7 K
C 4 4 8 8 ( S / T )
Q 5 7
1 / 2 P 1 0 . 0 R 1 3 9
Q 2 1
4 . 7 K
I N C 6 0 0 2 A C 1 - T 1 1 2
C 4 1 1 5 S
R 1 6 9
4 7 K
Q 4 8
R 1 2 4
Q 3 6
1 / 2 P 1 0 . 0
A 1 9 4 1 - O ( S 1 / E / S )
Q 2 7 A 1 7 0 8 ( S / T )
R 6 7
4 7 K
R 5 5
1 0 K
Q 3 7
C 5 1 9 8 - O ( S 1 / E / S )
Q 4 9
R 1 6 4
R 1 2 5
4 7 K
C 4 4 8 8 ( S / T ) Q 5 8
1 / 2 P 1 0 . 0
R 1 4 0
Q 2 2
4 . 7 K
I N C 6 0 0 2 A C 1 - T 1 1 2
C 4 1 1 5 S
R 1 7 0
6 8 K
Q 5 0
R 1 2 6
Q 3 8
1 / 2 P 1 0 . 0
A 1 9 4 1 - O ( S 1 / E / S )
A 1 7 0 8 ( S / T )
Q 2 8
R 6 8
4 7 K
R 5 6
1 0 K
Q 3 9
C 5 1 9 8 - O ( S 1 / E / S )
Q 5 1
R 1 6 5
R 1 2 7
C 4 4 8 8 ( S / T ) 4 7 K
Q 5 9
1 / 2 P 1 0 . 0
R 1 4 1
Q 2 3
4 . 7 K
I N C 6 0 0 2 A C 1 - T 1 1 2
C 4 1 1 5 S
R 1 7 1
6 8 K
Q 5 2
R 1 2 8
Q 4 0
1 / 2 P 1 0 . 0
A 1 9 4 1 - O ( S 1 / E / S )
A 1 7 0 8 ( S / T )
Q 2 9
R 6 9
4 7 K
R 5 7
1 0 K
Q 4 1
C 5 1 9 8 - O ( S 1 / E / S )
Q 5 3 R 1 6 6
R 1 2 9
4 7 K
C 4 4 8 8 ( S / T ) Q 6 0
1 / 2 P 1 0 . 0 R 1 4 2
Q 2 4
4 . 7 K
I N C 6 0 0 2 A C 1 - T 1 1 2
C 4 1 1 5 S
R 1 7 2
5 6 K
Q 5 4
R 1 3 0
Q 4 2
1 / 2 P 1 0 . 0
A 1 9 4 1 - O ( S 1 / E / S )
Q 3 0 A 1 7 0 8 ( S / T )
R 7 0
4 7 K
R 5 8
1 0 K
G H I
Page 90 F1
t o D I G I T A L to DIGITAL_CB222
T U L
J 1
n o _ u s e
T U R
A E
R 2 0 6
- 1 2 A
1 0 0 K
5 C H _ M T
R 2 0 7
- 1 2 A
1 0 0 K
S W _ M T
C 7 6
V O L _ M O S I
n o _ u s e
C 7 7
V O L _ S C K
n o _ u s e
F L
A E
H P R
R Y 2
5 4
R Y 2
2 3
H P L
9 8 1 - 2 A - 2 4 D S - S P 7
F R
R Y 1
2 3
F R R Y 1
5 4
F L
9 8 1 - 2 A - 2 4 D S - S P 7
Q 6 8
C 6 4 R 2 0 4
P
1 0 0
1 0 0 0 P / 2 5 0
K T C 3 1 9 8 ( Y )
R 1 7 6
1 P 4 . 7
C
R Y 3
5 4
R Y 3
2 3
S L
9 8 1 - 2 A - 2 4 D S - S P 7
C
S R
R Y 4
5 4
R Y 4
2 3
S W
9 8 1 - 2 A - 2 4 D S - S P 7
+ 1 2 A
K R A 1 0 4 S - R T K / P
K R A 1 0 4 S - R T K / P
S W
K R A 1 0 4 S - R T K / P
K R A 1 0 4 S - R T K / P
C 7 8
1 0 0 / 3 5
- 1 2 A
S L
S R
C 6 5 + B V Q 6 6
P 53.15Ｖ
K T A 1 6 5 9 A
R 2 0 5
1 0 0 0 P / 2 5 0
1 . 0
R 1 7 7
1 P 4 . 7
Q 6 3 Q 6 7
R 2 0 2
1 0 0
2 N 5 5 5 1 C - A T / P 2 N 5 5 5 1 C - A T / P
A M P _ L M T
2 N 5 4 0 1 C - A T / P
Q 6 4
R 2 0 3
Q 6 2 -51.76Ｖ 1 . 0
- B V K T A 1 6 5 9 A
Q 6 5
R 1 8 0
-12.73Ｖ
1 P 1 K
A 1 7 0 8 ( S / T )
★ All voltages are measured with a 10M Ω /V DC electronic voltmeter.
★ Components having special characteristics are marked ⚠ and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
J K
MAIN (1)
P N 1
M A I N ( 1 )
A M P _ L M T
L o c a t i o n : * 1 * 4 0 0
L o c a t i o n : * * 1 * * 4 0
L o c a t i o n : T P 1 ~ 2 9 1
D G N D
H P _ N _ D E T
FRONT L
A M P _ O L V
C H A S S I S _ A
CENTER
J 6
n o _ u s e
J 7
n o _ u s e
J 5
SURROUND L V N 5 0 0 0 0
H P
Q 7 3
Q 6 9
H P R Y C H A S S I S _ B
K R C 1 0 2 S - R T K / P
F L / F R
Q 7 0 Q 7 4
S P R Y _ 5 C H
K R C 1 0 2 S - R T K / P
P S _ P R T
+ 1 2 A
- 1 2 A
C / S L
+ 4 0 F
Q 7 5
Q 7 1
K R C 1 0 2 S - R T K / P
+ 1 2 A
K R A 1 0 4 S - R T K / P
S R / S W
Q 7 6
Q 7 2
Q 7 9
Q 7 8
K R C 1 0 2 S - R T K / P
K R C 1 0 2 S - R T K / P
- 1 2 A
53.21V + B
D H 2 4 D 2 - O - Q
H S 1
D 4 7 R S 6 0 3 M - B - C - J 8 0
R Y 5
1 2
Z T 8 6 4 0 0
T H 1
N C P 1 8 X H 1 0 3 J 0 3 R B
BRIDGE DIODE
TEMPARETURE
R Y 5
D H 2 4 D 2 - O - Q
-53.22V - B G 2
G 1 T P 0 0 3 8 5
+ 4 0 F
T P 0 0 3 8 5
Q 7 7
C 4 4 8 8 ( S / T )
R 2 1 4 D 4 8 R 2 2 4
1 0 2 . 2
1 N 4 0 0 3 S
D 5 3
R R 2 6 4 M - 4 0 0 T R
n o _ u s e
● 電圧は、内部抵抗 10M Ωの電圧計で測定したものです。
● ⚠印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、
パーツリストに記載されている部品を使用してください。
● 本回路図は標準回路図です。改良のため予告なく変更することがあります。
L M N
Safety measures
• Some internal parts in this product contain high voltages and are
dangerous. Be sure to take safety measures during servicing, such as
wearing insulating gloves.
• Note that the capacitors indicated below are dangerous even after the
power is turned off because an electric charge remains and a high
voltage continues to exist there.
Before starting any repair work, connect a discharging resistor (5
k-ohms/10 W) to the terminals of each capacitor indicated below to
discharge electricity.
The time required for discharging is about 30 seconds per each.
C79, C80 on MAIN (1) P.C.B.
安全対策
・ この製品の内部には高電圧部分があり危険です。修理の際は、絶縁性の
手袋を使用するなどの安全対策を行ってください。
・ 下記のコンデンサには電源を OFF にした後も電荷が残り、高電圧が維持
されており危険です。修理作業前に放電用抵抗（5 k Ω /10 W）を下記の
各コンデンサの端子間に接続して放電してください。 放電所用時間は各々
約 30 秒間です。
MAIN（1）P.C.B. の C79、C80
W 1
H P _ N _ D E T
3.266V
Page 94 L6
H P R
0.2mV
H P G to OPERATION (7)_CB477
0.000V
H P L
0.3mV
4 P 3 5 0 M M B & C
s 1
T E 1
2
R E D
F R
1 FRONT
B L A C K
4 L/R
R E D
F L
3
B L C A K
G
5 M S T - 2 0 4 V 1 - 0 1
SPEAKERS
M S P - 1 1 5 V 2 - 0 7 n o _ u s e
T E 2 T E 3
C 5
4
C CENTER
L
C G 6
8
S L G 4
3
S L
R
S L 3 SURROUND
7
S R 1 L/R
2
S R
C
S R G 2
6
G 7 S W
1
G 8 ( S W ) SUBWOOFER
S W G
5
G 9
G 1 0
C B 2
+ 1 2 A
1 11.73V
Page 95 B6
A G N D
0.000V
2
to OPERATION (4)_CB522
- 1 2 A
3 -12.03Ｖ
P S _ P R T
4 1.762V
+ 4 0 F
5 39.95V
5 M 8 P F 5 0 0 1 1 0 M 0 M P = 2 . 0
5 1 0 4 8
Details of colored lines
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
C B 3
A C L
21.38VAC
1
A C L
2 21.36VAC
E
3 0.000VAC
E to POWER TRANSFORMER
4 0.000VAC
A C H
5 40.04VAC
A C H
6 40.06VAC
V H I
D e s t i n a t i o n P a r t L i s t
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
| s x x | L O C A T I O N | J U C T A | R V S | K B G L F |
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
| s 1 | T E 1 | W K 5 6 0 8 0 | W K 5 6 0 8 0 | W K 5 6 0 9 0 |
| | | M S T - 2 0 4 V 1 - 0 1 | M S T - 2 0 4 V 1 - 0 1 | M S T - 2 0 4 V 1 - 0 1 |
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
N O T I C E
( m o d e l ) R E S I S T O R
J J A P A N
R E M A R K S P A R T S N A M E
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 )
R G E N E R A L
M E T A L O X I D E F I L M R E S I S T O R
T C H I N A
M E T A L F I L M R E S I S T O R
K K O R E A
M E T A L P L A T E R E S I S T O R
A A U S T R A L I A
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
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
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
L S I N G A P O R E
C H I P R E S I S T O R
E S O U T H E U R O P E
V T A I W A N
C A P A C I T O R
F R U S S I A N
R E M A R K S P A R T S N A M E
P L A T I N A M E R I C A
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
S B R A Z I L
T A N T A L U M C A P A C I T O R
H T H A I
N O M A R K C E R A M I C C A P A C I T O R
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