Yamaha RX-V385 Service Manual page 104

A B C D
RX-V385/HTR-3072
OPERATION 2/2
1
AC IN
2
S T 5 4 1
F 5 4 0 2
J U C V P S
C 5 4 0 1
T K A B G F L
n o _ u s e
3
J U C V P S W Q 9 0 2 3 0 1 0 0 0 p / 2 5 0
s 5 4 7
T K A B G L F Z H 3 7 7 1 0 4 7 0 p / 2 5 0 C 5 4 0 5
C 5 4 0 2
F 5 4 0 3
0 . 0 1 / 2 5 0
s 5 4 7
n o _ u s e
R Y 5 4 1
C B 5 4 2
D G 5 D 1 - O ( M ) - I I _ T
F 5 4 0 2
AC33.2
4
C 5 4 0 4
s 5 4 4
AC34.0
1
F I 5 4 1
0 . 2 2 / 2 7 5
D 5 4 0 2
5 J U C V P S Z J 5 5 3 1 0 2 5 M H
T K A B G L F Z K 7 5 4 7 0 5 0 M H
AC31.8
AC31.7
6
164.9 F 5 4 0 5
2 . 0 0 A / 6 3 V
7
8 7 6 5
I C 5 4 1
S T R 3 A 4 5 3
1 2 3 4
D 5 4 0 3
16.6
R F 1 0 1 L A M 2 S T R
2.9
8
Primary side ground
9
10
11
OPERATION (4)
12
P O W E R O P E ( 4 )
5 2 1 - 5 3 5
5 2 0 1 - 5 3 5 0
2 5 2
13
P N 5 2 2 P N 5 2 1
n o _ u s e
to POWER TRANSFORMER
W S 4 8 8 3 0 W S 4 8 8 3 0
L = 7 0 # 1 8 L = 7 0 # 1 8
C B 5 2 4
A C _ 1 2 13.6
E _ 1 2
0
A C _ 1 2 13.6
14
5 k-ohms
10 W
X H I
D 5 2 0 4
15
G 2 G 3
s 5 2 2
G 5 2 0 1
T P 0 0 3 8 5
16
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
● 電圧は、内部抵抗 10MΩの電圧計で測定したものです。
★ Components having special characteristics are marked ⚠ and must be replaced ● ⚠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、
with parts having specifications equal to those originally installed. 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。
★ Schematic diagram is subject to change without notice.
● 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。
104
E F G H I
M A I N ( 1 ) O P E ( 4 )
to POWER TRANSFORMER
P R I M A R Y < - - > S E C O N D A R Y
W B 2 2 1 2 0 6 . 0 0 A 1 2 5 V
V V 0 7 1 7 0 3 . 1 5 A 2 5 0 V AC120.0
F 5 4 0 4
F G
C B 5 4 3 H S 5 4 1
P U E 1 6 - 3 0
s 5 4 1
W B 0 8 5 2 0
J U C Z H 3 7 7 6 0 3 3 0 0 p / 2 5 0
T K A B G L F V P S W Q 9 0 2 2 0 2 2 0 0 p / 2 5 0
C 5 4 1 0
s 5 4 6
4 D B 1 5 6 T 5 4 0 1
T H 5 4 1 165.6 (U model)
2
2 1 1
N T P A D 5 R 1 L D N B 0
3 1 0
3
9
5 8
6
Sub-transformer
5 k-ohms
5 k-ohms
10 W
10 W
J U C W W 7 6 6 0 0 2 2 0 / 2 2 0
V P S W S 0 6 8 6 0 1 5 0 / 4 0 0
T K A B G L F W Q 8 5 2 5 0 6 8 / 4 0 0
I C 5 4 3
1.0
T L P 7 8 5 ( D 4 - G R , F )
D 5 4 1 4
R 5 4 0 7
4 7
R F 1 0 1 L A M 2 S T R
R 5 4 0 5
1 0 0
2.9
R 5 4 0 9
1 0 0
D 5 4 0 8
1 S S 3 5 5 V M
I C 5 4 2
C 5 4 0 8 1.0
s 5 4 2
D 5 4 0 6
T L P 7 8 5 ( D 4 - G R , F )
J U C Z P 4 2 5 4 0 0 . 0 4 7 / 5 0 0
AC118.6
T K A B G L F V P S Z P 4 2 3 4 0 0 . 0 2 2 / 6 3 0
C 5 4 0 9
s 5 4 2
HEATSINK
TEMPERATURE
+ 3 . 3 T
Q 5 2 0 1
K T C 3 5 7 2 - A T / H
11.98 R 5 2 0 9 3.4
I C 5 2 3
2 2
K I A 7 8 1 2 A P I
17.2 I N O U T
+ 1 2
C O M
5 k-ohms
10 W
C O M
- 1 2
I N O U T
-17.4
K I A 7 9 1 2 P I
I C 5 2 4
-12.0
J 5 2 0 6
J K L M N
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 K A B G L F | V P S |
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
| s 5 2 1 | R 5 2 1 5 | X | X | W W 9 7 2 5 0 |
| | | | | 2 . 2 K | IC501: NJM41050
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
3-Input 1-output general-purpose video switch
| s 5 2 2 | D 5 2 0 4 | X | X | W Y 1 6 4 9 0 |
| | | | | U D Z V 2 7 B |
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
| s 5 4 1 | F 5 4 0 2 | W B 2 2 1 2 0 | V V 0 7 1 7 0 | W B 2 2 1 2 0 |
| | | 6 . 0 0 A 1 2 5 V | 3 . 1 5 A 2 5 0 V | 6 . 0 0 A 1 2 5 V |
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
| s 5 4 2 | C 5 4 0 8 | Z P 4 2 5 4 0 | Z P 4 2 3 4 0 | Z P 4 2 3 4 0 |
VIN1
| | C 5 4 0 9 | 0 . 0 4 7 / 5 0 0 | 0 . 0 2 2 / 6 3 0 | 0 . 0 2 2 / 6 3 0 |
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
CLAMP
| s 5 4 3 | C 5 4 1 9 | W W 7 6 6 0 0 | W Q 8 5 2 5 0 | W S 0 6 8 6 0 |
| | | 2 2 0 / 2 2 0 | 6 8 / 4 0 0 | 1 5 0 / 4 0 0 |
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
VIN2
| s 5 4 4 | F I 5 4 1 | Z J 5 5 3 1 0 | Z K 7 5 4 7 0 | Z J 5 5 3 1 0 |
| | | 2 5 M H | 5 0 M H | 2 5 M H |
CLAMP
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
| s 5 4 6 | C 5 4 1 0 | Z H 3 7 7 6 0 | W Q 9 0 2 2 0 | W Q 9 0 2 2 0 |
| | | 3 3 0 0 P / 2 5 0 | 2 2 0 0 P / 2 5 0 | 2 2 0 0 P / 2 5 0 |
VIN3
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
| s 5 4 7 | C 5 4 0 1 | W Q 9 0 2 3 0 | Z H 3 7 7 1 0 | W Q 9 0 2 3 0 |
CLAMP
| | C 5 4 0 2 | 1 0 0 0 P / 2 5 0 | 4 7 0 P / 2 5 0 | 1 0 0 0 P / 2 5 0 |
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
| s 5 8 1 | S W 5 8 1 | X | X | W V 3 8 2 9 0 |
| | | | | S L 1 4 |
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
| s 5 8 2 | F 5 8 0 1 | X | X | Z U 4 5 9 1 0 |
| | | | | 3 . 1 5 A 2 5 0 V |
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
| s 5 8 3 | C B 5 8 1 | X | X | V 9 3 7 7 9 0 |
| | | | | B 4 P 7 S - V H |
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
OPERATION (2)
O P E ( 2 ) A C - D C
* * 5 4 1 - 5 6 0
* 5 4 0 1 - 5 6 0 0
P N 5 4 1
5.5
n o _ u s e
L 5 4 0 1
1 . 5 U H
5.0
R 5 4 2 2
1 5 0 K
C 5 4 2 9
R 5 4 2 3
1 0 0
1 / 5 0
5.4
C 5 4 1 2
R 5 4 1 3
1 K
0 . 1 / 1 6
Q 5 4 0 2
2.5
C 4 0 8 1 U B T L R
D 2 7 0 4 ( K )
R 5 4 2 8
0.8 1 K
R 5 4 2 1
0.3 Q 5 4 0 3
2 . 2
0.1
OPERATION (3)
P N 5 0 1 V I D E O O P E ( 3 )
5 0 1 - 5 2 0
5 0 0 1 - 5 2 0 0
W S 4 8 8 4 0
L = 5 0 # 1 8
C 5 0 0 9 N C V I N 1
R 5 0 0 7
0 . 1 / 1 6
R 5 0 0 6 S S I G V S W 1
R 5 2 0 5 + 3 . 3 S 6 8 K
3.3 V S A G V I N 2
C 5 0 0 8
1 . 0 K D G N D Page 98 O1 1 / 2 5
0 6 8 K S R E F V S W 2
T H M 1 _ P R T
3.0 to DIGITAL_CB25 + 5 V C 5 0 0 5 V C C V I N 3
C B 5 0 1
V E
V _ N _ M U T E
3.1 + 3 . 3 T 0 . 1 / 1 6
1 G N D M U T E
P S 1 _ P R T V S E L 2
0.9 2 V O U T N C
V S E L 1
2.1 P S 2 _ P R T
3
+ 5 V
P _ 2 0 0 _ D E T + 5 V 5.0
3.3 4
5 P 1 6 0 M M P = 2 . 0 J 5 0 0 1
V E
5
W 5 0 0 1
R D 3 5 0 0 0
5 1 0 4 8
W 5 2 0 1
V E
7 P 1 0 0 M M P = 2 . 0
Page 98 P1
to DIGITAL_CB27
V E
C B 5 2 2
+ 1 2 R Y ANALOG VIDEO AMP
12.1
1
Page 106 Y15
0 A G 2
2
and SELECTOR
- 1 2 R Y
-12.0 to MAIN (1)_CB223
3
5 2 1 5 1
C B 5 2 6
+ 1 2 A
1
- 1 2 A
2
A G N D
3
P H L
n o _ u s e
Details of colored lines
Red / full line:
Red /dashed line:
Orange:
Yellow:
Green:
Brown:
Blue:
O P Q R S
IC523: KIA7812API
Voltage regulator
R22 R17 R23
SW1 SW2 V+
R1 Q11
Q11-1
Q15
Q16
6dB 75-ohms DRV
Q12
Q14 R14
6.75MHz R10 R15
Q19
LPF VOUT Q17 R16
4 R19
R12
VSAG Q18 Q6 R20
Q1
R18
R11 R9
SREFV R7 C1
Z1
R2
Q10
ASC
Q2
Q7 R21
R3
SSIGV Q13
Q4
Q3 Q5 Q9 Q8
MUTE GND R13
R4
R5 R6 R8
IC544: TL431ACLPM
Adjustable precision shunt regulators
CATHODE
C 5 4 2 5
1 0 0 0 P / 1 0 0 REF
Vref
F G
ANODE
W 5 4 0 1
5.5 + 5 . 5 V
1
+ 5 . 5 V
Page 101 B1
5.5 2
0 G N D
3
to DIGITAL_CB81
G N D
0
4
S C N - X H
W 5 4 0 3
3.3 + 3 . 3 M
0 D G N D
3.3 A C P W R _ D E T Page 98 N1
2.36 P R Y
to DIGITAL_CB24
T E S T
3.3
5 P 3 0 0 M M B & C
O P E ( 1 3 )
R 5 4 1 9
n o _ u s e
( D E S T V P S O n l y )
OPERATION (13)
P J 5 0 1
1 0 / 1 0
A V 1 A V 1
VIDEO AV 1
C 5 0 0 1
1 0 / 1 0
A V 2 A V 2
VIDEO AV 2
C 5 0 0 2
M S P - 2 5 2 V 2 - 0 7 N I _
P J 5 0 2
1 0 / 1 0
A V 3 A V 3
VIDEO AV 3
C 5 0 0 3
MONITOR
C 5 0 0 7
R 5 0 0 5
M O N O U T
OUT
7 5
4 7 / 1 6
V E M S P - 2 5 2 V 2 - 0 7 N I _
N O T I C E
( m o d e l )
J J A P A N
U U . S . A
C C A N A D A
R G E N E R A L R E S I S T O R
T C H I N A R E M A R K S
K K O R E A N O M A R K C A R B O N
A A U S T R A L I A
C A R B O N
B B R I T I S H M E T A L
G E U R O P E A N S T A N D A R D
M E T A L
Power supply (+)
L S I N G A P O R E M E T A L
Power supply (-)
E S O U T H E U R O P E
F I R E
Signal detect
V T A I W A N C E M E N T
Clock
F R U S S I A N
S E M I
Protection detect
P L A T I N A M E R I C A C H I P R E S I S T O R
Reset signal
S B R A Z I L
Panel key input
H T H A I
T U V W X
IC524: KIA7912PI
Voltage regulator
1 COMMON (GND)
1 INPUT
R22
R15 R18
R21 R23
Q28 Q17 Q21
Q22 Q24
R16
Q23 R13 R12
R24
Q19
Q29
R20
R1
3 OUTPUT Q18 Q20
Q25
Q30
R14 R17 Q31
R25
R19
Q12 Q13
Q2 Q3
Q26-1 R11
R10
R26
Q26 Q27 3 OUTPUT
Q27-1
Q7 D4 Q14
Q15
R0
C2 C1
Q16
R9
Q8
R4 R5 R6
Q4
2 COMMON (GND) Q6 Q9 Q11
R3
Q5 Q10
R8
R2
R7
2 INPUT
IC541: STR3A453
Power ICs for switchingpower supplies
5-8
VCC 2 STARTUP D/ST
UVLO REG VREG OVP TSD
PWM OSC S Q
R
OCP
VCC
Drain Peak Current
OLP Compensation
Feedback
Control
FB/OLP 4 LEB 1 S/OCP
Slope
Compensation 3 GND
Notes)
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.
C5419, C5422 on OPERATION (2) P.C.B.
C2519, C2520 on OPERATION (4) P.C.B.
注意 )
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 kΩ/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。
OPERATION （2） P.C.B. の C5419、 C5422
OPERATION （4） P.C.B. の C2519、 C2520
5 8 1 - 5 9 0
S W I T C H
5 8 0 1 - 5 9 0 0
to POWER TRANSFORMER
s 5 8 3
s 5 8 1
C B 5 8 1
S W 5 8 1
3
4 O R
1 1 0 / 1 2 0
2
R E
3
1
s 5 8 2 2
2 2 0 / 2 4 0
Y E
F 5 8 0 1
1
V I
3 . 1 5 A 2 5 0 V
6
1 1 0 / 1 2 0
5
4
2 2 0 / 2 4 0
110V–120V 220V–240V
VOLTAGE SELECTOR
V, P, S models
C A P A C I T O R
R E M A R K S P A R T S N A M E
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 A R T S N A M E
S O L I D E L E C T R O L Y T I C C A P A C I T O R
F I L M R E S I S T O R ( P = 5 )
N O M A R K C E R A M I C C A P A C I T O R
F I L M R E S I S T O R ( P = 1 0 )
C E R A M I C T U B U L A R C A P A C I T O R
O X I D E F I L M R E S I S 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
F I L M R E S I S 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
P L A T E R E S I S T O R
M I C A C A P A C I T O R
P R O O F C A R B O N F I L M R E S I S 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
M O L D E D R E S I S 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
V A R I A B L E R E S I S 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