Table of Contents
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A
B
C
D
E
F
SCHEMATIC DIAGRAMS
MAIN 1/2
Page 43
C3
F r o m / t o
M o t o r V o l u m e
No replacement part available.
1
to VOLUME_CB801
T O P C B P O W E R
A-U671
C 8 1 4
MAIN (1)
0 . 1 / 1 6
A M P _ G N D
+ 3 . 3 S
+ 5 M
2
+ 5 M _ C O N T R O L
D G N D
U D A C _ R O U T
D 3 2 4
3
1 S S 3 5 2
U D A C _ L O U T
D 3 2 5
1 S S 3 5 2
C 4 3 8
DIGITAL IN
0 . 0 1 ( B )
D G N D
A G N D
ANALOG IN
4
L 3 0 1
R 5 0 1
1 0 / 1 6
L
3
4
B L M 1 8 B D 6 0 1 S N 1 D
1 K
C 3 1 9
A-U670/A-670
ANALOG IN
LINE IN
2
5
1
L 3 0 2
R 5 0 2
1 0 / 1 6
R
A-U671
B L M 1 8 B D 6 0 1 S N 1 D
1 K
C 3 2 0
1 1 7 7 - 1 0 - 0 5 0 0 A
P J 3 0 1
A U X I N
J 3 0 9 0
J 3 1 0 0
A G N D
D 3 0 1
1 S S 3 5 2
Y Q - 3 6 - B
D 3 0 2
G 3 0 2
6
G
2
G
1
G
3
1 S S 3 5 2
C 3 0 5
+ 1 0 V
0 . 0 1 ( B )
D G N D
F G 6
Q 3 0 2
Z F 3 9 1 5 0
D T A 1 2 4 E U A
R 3 1 4
Q 3 0 1
1 K
W 3 0 1
7
C 2 4 1 2 K ( Q / R / S )
2 A
5 k-ohms
+ 1 0 V
A W G # 2 4
G N D
10 W
to Power supply module
- 1 0 V
S C N - X H
[
7 A O N / O F F ]
8
5 k-ohms
10 W
- 1 0 V
R 3 1 2
1 0 K
Z F 3 9 1 5 0
9
10
A-U670/A-U671
D C / D C _ B D 9 3 2 8 E F J
DC/DC
P W R _ D E T
C 3 1 1
R 3 0 6
P W R _ O N
2 2 0 0 P ( B )
1 1 K
C 3 2 2 1 0 0 P ( S L )
11
C 4 6 8
0 . 1 / 1 6
R 3 1 0 8 . 2 K
C 3 1 0
0 . 1 / 1 6
8
7
6
5
G
I C 3 0 1
+ 5 V
1
2
3
4
No replacement part available.
L 3 0 7
1 0 U H
I r m s = 1 . 5 A
サービス部品供給なし
12
6 7 0
U 6 7 0
D G N D
U 6 7 1
A-U670/A-U671
A-670
+ 3 . 3 M
13
D 3 0 5
1 S S 3 5 2
R 3 0 7
[ + 3 . 3 S O N / O F F ]
1 2 K
K R A 3 0 4 - R T K / P
I C 3 0 2
N C
C E
A D J
G N D
S Y S T E M C O N T R O L
V D D
V O U T
14
R 1 1 5 4 H 0 0 1 C - T 1 - F
L 3 0 3
C 8 2 5
M S J - 0 3 5 - 6 6 E - B - A
B L M 1 8 B D 6 0 1 S N 1 D
L 3 0 5
B L M 1 8 B D 6 0 1 S N 1 D
W V 2 7 9 4 0
1 0 0 0 P ( B )
M O S I
15
SYSTEM
L 3 0 4
M I S O
B L M 1 8 B D 6 0 1 S N 1 D
J K 3 0 1
S Y S _ D E T
D G N D
+ 3 . 3 M
Q 3 3 5
16
A G N D
A-U670/A-670
D G N D
17
R e f f e r e n c e : 1 - 1 0 0
MAIN (3)
P O W E R _ S W
(Power)
D 2
18
R 3
R S B 6 . 8 S
R E S I S T O R
2 7 0
W 1 A
D 1
R E M A R K S
P A R T S
N A M E
1 S S 3 5 2
+ 3 . 3 M
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 )
L E D _ P W R
C A R B O N
F I L M R E S I S T O R
( P = 1 0 )
D 3
P W R _ O N
M E T A L
O X I D E F I L M R E S I S T O R
1 S S 3 5 2
D G N D
M E T A L
F I L M
R E S I S T O R
C 1
4 P 1 4 0 M M B & B
19
M E T A L
P L A T E R E S I S T O R
0 . 1 / 1 6
F G 1
POWER
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
indicator
C E M E N T
M O L D E D R E S I S T O R
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
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
20
T A N T A L U M
C A P A C I T O R
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
IC301: BD9328FJ
M I C A
C A P A C I T O R
1ch step-down DC/DC converter
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
21
P O L Y P H E N Y L E N E
S U L F I D E
F I L M
VCC
S
C A P A C I T O R
EN
OPEN
SHUTDOWN
7
VREF
OSC
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
UVLO
IBIAS
R
G E N E R A L
TSD
22
T
C H I N A
K
K O R E A
FB
ERR
5
A
A U S T R A L I A
B
B R I T I S H
COMP
SLOPE
G
E U R O P E
PWM
6
L
S I N G A P O R E
E
S O U T H E U R O P E
SS
8
Soft Start
V
T A I W A N
F
R U S S I A N
23
P
L A T I N A M E R I C A
S
B R A Z I L
H
T H A I
G
H
I
J
K
L
M
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.
A-U671
C307, C308 on MAIN (1) P.C.B.
to Power supply module
サービス部品供給なし
A M P _ G N D
DC/DC
A M P _ G N D
I C 8 0 2
B D 9 8 7 6 A E F J - E 2
Q 3 1 1
+ 1 0 V
S Y N C
F B
6 8 0 0 P ( B )
A 1 0 3 7 A K ( Q / R / S )
R 3 5 4
V C
C 8 1 0
R 3 5 3
E N
R 8 0 8
P W R _ D E T
2 7 K
1 0 K
B S T
G N D
1 0 K
L 6 1 9
L 6 2 0
V C C
L X
F 3 0 2
B L M 2 1 P G 6 0 0 S N 1 D
1 5 U H
M I N I S M D C 0 5 0 - 0 2
C 8 0 9
0 . 0 1 ( B )
R B 0 5 1 L - 4 0
A M P _ G N D
A M P _ G N D
- P W R _ D E T -
E-VOLUME
TONE CONTROL/BALANCE
D G N D
+ 7 A
+ 7 A
No replacement part available.
L c h O U T
I C 3 0 5
V +
C 3 4 1
8
R 3 3 2
R 3 4 3
3
1
R 3 6 0
R 3 8 6
1 0 0
2 2 / 2 5
3 . 9 K
2
I C 3 0 5
1 0 0
4 7 0
C 3 5 8
3 2
3 1
3 0
2 9
2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
1 9
1 8
1 7
N J M 5 5 3 2 M D - D ( T E 1
2 2 / 2 5
I C 3 0 3
N J W 1 1 9 4 V ( T E 1 )
R 3 4 1
C 3 4 3
R 3 5 0
R 3 5 5
1
2
3
4
5
6
7
8
9 1 0 1 1 1 2 1 3 1 4 1 5 1 6
1 0 0
3 . 9 K
3 . 9 K
2 2 / 2 5
C 3 4 8
R 3 8 8
P
4 7 K
1 0 0 P / 6 3 0
D 2 7 0 4 ( K )
Q 3 1 7
D 2 7 0 4 ( K )
A d d r e s s : 0 x 0 0
C 3 4 9
P
1 0 0 P / 6 3 0
R 3 8 9
R 3 4 2
2 2 / 2 5
R 3 5 1
R 3 5 6
4 7 K
1 0 0
3 . 9 K
3 . 9 K
C 3 4 4
N J M 5 5 3 2 M D - D ( T E 1
C 3 5 9
6
2 2 / 2 5
I C 3 0 5
R 3 2 8
R 3 4 4
7
R 3 6 1
2 2 / 2 5
R 3 9 0
+ 7 A
1 0 0
C 3 4 2
3 . 9 K
5
4
1 0 0
4 7 0
V -
I C 3 0 5
+ 3 . 3 M
MIX IN
R c h O U T
n o _ u s e
C 3 6 1
R 3 7 9
Q 3 1 5
- 7 A
- 7 A
A 1 0 3 7 A K ( Q / R / S )
4 . 7 K
R 3 6 3
Q 3 1 4
1 0 K
C 2 4 1 2 K ( Q / R / S )
A G N D
D G N D
- 7 A
R 3 3 5
R 5 0 3
R 3 3 6
R 4 8 3
3 3
4 . 7 K
+ 3 . 3 S
3 3
4 . 7 K
MICRO-
R 3 3 9
3 3
A-U670/A-670
PROCESSOR
C 3 4 5
R 3 3 8
+ 3 . 3 M
1 K
0 . 1
A-U670/A-670
C 3 3 9
3 3 0 P ( S L )
+ 3 . 3 M
C 3 3 8
0 . 1 / 1 6
C 3 3 2
1
2
1
1
1
0
9
8
7
6
5
4
3
2
1
A M P _ P R T
V D D
1 3
4 8
0 . 1 / 1 6
P W R _ D E T
V S S
1 4
4 7
A U D I O _ O N
R E G C
C 3 5 0
1 / 2 5
1 5
4 6
R 3 2 1
1 K
C 3 3 7
P W R _ O N
S Y S _ D E T
1 6
4 5
S Y S _ D E T
0 . 1 / 1 6
D A C _ N _ R S T
I N S P _ M O D E
R 4 9 5
D A C _ N _ R S T
1 7
4 4
R 4 9 0
P U R E _ S W
1 0 K
R 3 7 2
V O L U M E - U P
R x D 2
C 3 5 1
P U R E _ S W
1 8
4 3
3 3
R 4 8 5
D A C _ S T A T U S
1 K
T x D 2
to MAIN 2/2
V O L U M E - D N
1 9
Y H 4 5 8 A 0
4 2
0 . 1
R 3 2 2
3 3
R 3 4 0
T x D 0
R 5 F 1 0 1 G E A F B # V 0
H P _ D E T
X M S _ M I S O
2 0
4 1
2 2
I C 3 0 4
C 3 4 0
1 K
R x D 0
N _ R S T
X M S _ M O S I
2 1
4 0
R 3 3 7
0 . 1 / 1 6
C 3 5 4
T o 0 0 2 . s h t
R 3 2 3
A M P _ M U T E
T O O L 0
0 . 1 / 1 6
2 2
1 0 0 K
2 2
3 9
U S B D A C b l o c k
A M P _ S D
L E D _ U S B
2 3
3 8
L E D _ P W R
L E D _ A U X
2 4
3 7
I C 3 0 4
+ 3 . 3 M
2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 3 5 3 6
- R E S E T -
R 4 8 6
R 4 8 7
O U T
n o _ u s e
1 0 0 k
V D D
1 0 0 k
n o _ u s e
G N D
1 0 0 k
1 0 0 k
D T C 1 1 4 E K A
R 3 1 1 6 N 2 7 1 A - T R - F
R329
R330
12K
18K
+ 5 V
+ 7 A
+ 3 . 3 M
no_use
47K
C 2 4 1 2 K ( Q / R / S )
Q 3 1 3
M U T E
E E P R O M
n o _ u s e
V O L U M E
I m a x = 2 0 m A
+ 3 . 3 S
D G N D
- 7 A
+ B
+ 3 . 3 M
n o _ u s e
A-U671
C 3 2 4
D T C 1 1 4 E K A
0 . 1 / 1 6
D T C 1 1 4 E K A
R 3 7 0
D G N D
R 3 5 8
3 3
3 3
R 3 7 1
3 3
A-U670/A-U671
+ 3 . 3 S
+ 5 V
A-U670/A-U671
+ 3 . 3 S
R 4 8 4
F F C
S P D C _ D E T
3 3
+ 3 . 3 S
L = 2 5 0 m m
R 4 8 0
1 0 K
T O N E
R 4 8 9
1 K
R 4 8 1
1 0 K
A-U670/A-670
MAIN (2)
T O N E C O N
L E D _ D S D x 2
L E D _ D S D x 1
P N 4
P N 7
P N 5
n o _ u s e
W 1 B
+ 3 . 3 M
L E D _ P W R
P W R _ O N
D G N D
+ 3 . 3 S
PURE DIRECT
I N P U T _ S W
D 9
R 6
4 P 1 4 0 M M B & B
C 2
indicator
5 6 0
0 . 1 / 1 6
A-U670/A-U671
S E L 6 9 1 0 A - C D
3
2
4
3
2
4
3
2
4
D 8
R 5
1 0 K B
1 0 K B
1 0 K B
5 6 0
1
1
1
BALANCE
S E L 6 9 1 0 A - C D
V O U T
V R 1
V R 2
V R 3
R 4
D 7
5 6 0
G N D
D 5
S E L 6 9 1 0 A - C D
1 S S 3 5 2
V C C
LINE
USB
BASS
TREBLE
D 6
1 S S 3 5 2
indicator
indicator
Remote control
C 3
INPUT
0 . 1 / 1 6
F G 2
A-U671
sensor
A-U671
IC302: R1154H001C-T1-F
IC303: NJW1194V
2-channel electronic volume input selector and tone control
Voltage regulator
5V
Thermal
VREG
Shutdown
BST
V
DD
5
1
V
OUT
1
OCP
12V
VIN
4 ADJ
2
InA1
Vref
InA2
LVS
S
InA3
DRV
SW
OUTPUT
Short
Current
InA4
3
Protection
Limit
Circuit
Circuit
LOGIC
InB1
R
LVS
CE
3
2
GND
InB2
InB3
Pin No.
Symbol
Description
InB4
1
V
OUT
Output Pin for Voltage Regulator
2
GND
Ground
4
3
CE
Chip Enable Pin (active at "H")
GND
4
ADJ
Adjustable Output Pin for Voltage Regulator
5
V
DD
Power Supply Pin
N
O
P
Q
R
S
T
D e s t i n a t i o n P a r t L i s t
1 0 A
D 3 3 2
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
1 S S 3 5 2
|
s X X
|
L O C
A W G # 1 6
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
P N 3 0 2
P N 3 0 1
Y Q - 3 6 - B
|
s 1
|
T E 3 0 1
D 3 3 3
|
|
G 3 0 1
+ - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - + - - - - - - - - - - - - - - - +
1 S S 3 5 2
n o _ u s e
G
2
G
1
G
3
C 4 6 5
+ B
0 . 0 1 ( B )
F G 5
A M P _ G N D
- B
DIGITAL
C 4 7 4
AMPLIFIER
R 4 1 2
1 0 0 0 / 3 5
2 2 K
D 3 1 5
1 S S 3 5 2
サービス部品供給なし
R 4 4 1
n o _ u s e
I C 3 0 9
4 . 7
C 4 7 8
C 3 7 0
D 3 1 8
I R 4 3 0 2 M T R P B F
47/25
R 4 0 3
1 S S 3 5 2
1 0 0 0 P ( B )
R 4 1 3
1 8 0
R 8 2 2
R 8 2 5
R 3 9 6
R 4 0 5
C L I P
4 7 0
n o _ u s e
1 0 0
1 . 0 K
C 3 7 9
C O M P 2
P
P
2 2 0 0 P / 1 0 0
C 3 8 2
I N - 2
2 2 0 0 P / 1 0 0
- B
D 2 7 0 4 ( K )
R 5 0 0
I N + 2
V S 2
R 8 2 0
R 4 2 3
C 4 6 4
6 . 8 K
B L M 1 8 B D 6 0 1 S N 1 D
R 4 1 6
G N D
4 7 K
1 0 / 1 6
1 0 0
1 5
L 3 0 8
V S S
V N 2
Q 3 1 6
Q 6 0 9
D 8 0 6
J 3 1 5 0
R 4 1 7
V A A
V N 1
1 S S 3 5 2
1 S S 3 5 2
1 0 0
R 5 0 8
J 3 2 1
0
L 3 0 9
I N + 1
1 5
J 3 2 2
0
D 8 0 7
B L M 1 8 B D 6 0 1 S N 1 D
I N - 1
V S 1
C 3 8 0
C 3 8 3
J 3 2 3
0
C O M P 1
P
P
2 2 0 0 P / 1 0 0
R 3 9 4
R 3 9 9
2 2 0 0 P / 1 0 0
C S D
Q 6 1 0
1 0 0
6 . 8 K
F A U L T
R 8 2 1
C 3 7 1
R 4 1 4
1 0 / 1 6
R 4 0 0
4 7 K
1 8 0
n o _ u s e
D 2 7 0 4 ( K )
R 4 1 0
R 8 2 3
R 8 2 6
R 3 9 5
R 4 0 1
D 3 1 6
C 4 7 9
1 0 0 K
R 4 3 8
4 7 0
n o _ u s e
1 0 0
6 . 8 K
1 S S 3 5 2
4 . 7
1 0 0 0 P ( B )
R 4 0 2
4 7 K
D 3 1 7
- 7 A
1 S S 3 5 2
C 3 7 2
Q 3 1 8
Q 3 1 9
47/25
A 1 0 3 7 A K ( Q / R / S )
C 2 4 1 2 K ( Q / R / S )
C 3 9 1
R 3 9 7
C 4 7 3
1 0 K
1 0 / 1 6
R 4 3 0
1 0 0 0 / 3 5
R 4 1 1
4 . 7
6 8 K
+ 3 . 3 M
Q 3 2 0
A 1 0 3 7 A K ( Q / R / S )
Q 3 2 2
D G N D
A 1 0 3 7 A K ( Q / R / S )
R 3 9 3
1 K
A G N D
R 4 0 8
- 1 5 V
1 0 K
+ 3 . 3 S
D G N D
[ V C C O N / O F F ]
n o _ u s e
R 8 3 0
A-U670/A-U671
+ 3 . 3 E S A
I C 8 0 3
4
7
S
2
A-U670/A-U671
G N D
V C C
to MAIN 2/2
I C 8 0 3
R 3 8 4
3
E P / D A C _ D A T A
O E
8
3 3
+ 7 A
E P / D A C _ C L K
R 3 8 5
1
3 3
n o _ u s e
T o 0 0 2 . s h t
R 8 3 1
U S B D A C b l o c k
EEPROM
S D A
G N D
D G N D
S C L
A 2
1 0 / 1 6
R 4 3 5
W P
A 1
C 3 9 4
3 . 3 K
V C C
A 0
A d d r e s s : 1 0 1 0 1 0 0 x
D 2 7 0 4 ( K )
R 4 3 9
4 7 K
D A C _ S T A T U S
Q 3 2 4
R 3 4 5
1 K
H P _ D E T
+ 3 . 3 S
Q 3 2 5
4 7 K
R 4 4 0
D 2 7 0 4 ( K )
C D
C 3 9 5
3 . 3 K
N C
1 0 / 1 6
R 4 3 6
+ 3 . 3 M
- 7 A
- 7 A
RESET
I C 3 0 4
C 3 9 6
R 3 8 1
R 3 9 2
1 / 2 5
P W R _ O N
R 4 2 7
4 7 0 K
1 M
4 . 7 K
D 3 1 3
1 S S 3 5 2
R 4 3 3
1 0 K
D G N D
+ 7 A
+ 3 . 3 M
Writing port
1
+ 3 . 3 M
2
G N D
I C 3 1 0
V +
3
/ R E S E T
R 4 2 0
5
8
3
7
4
T O O L 0
4 3 K
R 4 3 4
I C 3 1 0
1
6
C 3 6 7 1 0 0 0 P ( B )
R 4 2 1
I C 3 1 0
4
N J M 2 9 0 4 V
5
R X D 0
2
6 . 2 K
C 3 6 8 1 0 0 0 P ( B )
4 3 K
V -
6
T X D 0
N J M 2 9 0 4 V
I C 3 1 0
C 3 6 9
R 4 4 8
R 4 2 5
6 . 8 K
1 0 0 0 P ( B )
C 4 1 1
2 2 K
C 3 9 7
1 0 0 P ( S L )
D G N D
3 3 0 0 P ( B )
C B 3 0 4
0 6 F M N - B M T - A - T F T
W C 1 9 5 6 0
No replacement part available.
- 7 A
サービス部品供給なし
MAIN (4)
MAIN (5)
A-U670/A-U671
A-U670/A-670
L E D _ U S B
V O L U M E
W 3 A
W 3 B
7 P 1 6 0 M M B & B
7 P 1 6 0 M M B & B
L E D _ D S D x 2
L E D _ D S D x 2
L E D _ D S D x 1
L E D _ D S D x 1
L E D _ P C M x 8
L E D _ P C M x 8
L E D _ P C M x 4
L E D _ P C M x 4
L E D _ P C M x 2
L E D _ P C M x 2
L E D _ P C M x 1
L E D _ P C M x 1
+ 5 V
+ 5 V
+ 3 . 3 S
VOLUME
P U R E _ S W
P N 6
S W 4
n o _ u s e
C 5
E C 1 2 E 2 4 3 0 8 0 3
Z R 1 4 6 7 0
n o _ u s e
A
C
O
M
B
D 6 0 8
V O L _ A
n o _ u s e
F G 3
PCM
DSD
V O L _ B
A-U670/A-U671
P N 2
USB DAC indicators
PURE DIRECT
n o _ u s e
Ach Tone Filter
V+ GND
V-
V-
Details of colored lines
Bias
Control Logic
Red / full line:
Zero Cross Detection
Red /dashed line:
OutA
Orange:
TONE
Yellow:
Green:
OutB
Brown:
TONE
Blue:
Bch Tone Filter
U
V
W
X
Y
Z
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。
MAIN (1) P.C.B. の C307、 C308
|
J U T A V
|
K B G L
|
Note:
|
W U 7 3 0 1 0
|
W U 7 3 0 3 0
|
| M S T - 2 2 4 V D - 0 1 - 7 6 | M S T - 2 2 4 V D - 0 1 - 7 6 |
Precaution for handling measuring instrument
Since the speaker output of this unit is BTL connected, the ground side of the
measuring instrument to be connected to the speaker terminal
MUST be kept in floating condition. MUST be kept in floating condition.
注意：
計測機器取り扱い上の注意
本機のスピーカー出力はBTL接続となっていますので、スピーカー端子
に接続する計測器のアース側はフローティング状態に保つ必要があります。
D 3 2 6
R 5 0 5
C 4 6 6
1 S S 3 5 2
n o _ u s e
n o _ u s e
D 3 2 7
A M P _ G N D
F G 7
1 S S 3 5 2
C 4 4 9
C 4 6 7
R 5 0 6
0 . 0 1 ( B )
A M P _ G N D
n o _ u s e
n o _ u s e
A M P _ G N D
F G 8
OUT L
S P O U T
T Q R 8 0 4 8 - N 0 0 0 3 R N
5
L 3 1 8
T Q R 8 0 4 8 - N 0 0 0 3 R N
G
L c h O U T
L 3 1 3
4
3
4
3
B L C A K
L
L 3 1 6
4
3
S
F
S
F
3
1
2
1
2
F
SPEAKERS
R E D
1
S
2
4
n o _ u s e
4
3
2 2 U H
B L A C K
1
1
S
F
2
R c h O U T
R
C 4 7 5
R E D
L 3 1 4
2
2 2 0 0 / 3 5
T Q R 8 0 4 8 - N 0 0 0 3 R N
T E 3 0 1
s 0 1
L 3 1 7
4
3
F
1
S
2
2 2 U H
R 4 9 6
N G N D 2
6 8 K
R 4 9 8
6 8 K
H P O U T
H P
MAIN (6)
A M P _ G N D
J K 1
C 1
L 3
O P 1
B L M 1 8 B D 6 0 1 S N 1 D
L
R
O P 2
HP OUT
C 2
G N D
PHONES
L = 2 8 0 m m
F G 4
to chassis
n o _ u s e
W 8 0 3 A
I C 3 1 2
V +
IC308: BR24G01FVM-3GTR
1 0 / 1 6
8
3
1
C 4 1 4
C 4 2 7
Serial EEPROM series standard EEPROM
2
I C 3 1 2
1 0 0 P ( S L )
B A 1 5 2 1 8 F
1 0 / 1 6
R 4 6 0
R 4 6 8
1 5 K
4 7 K
A0
1
C 4 1 7
1 kbit EEPROM Array
C 4 2 9
1 0 P ( C H )
Word Address
C 4 3 0
Address
A1
2
7bit
Decoder
Register
Register
1 0 P ( C H )
1 0 / 1 6
R 4 6 1
R 4 6 9
1 5 K
4 7 K
C 4 1 8
C 4 2 8
B A 1 5 2 1 8 F
START
STOP
6
1 0 / 1 6
1 0 0 P ( S L )
I C 3 1 2
7
A2
3
Control Circuit
5
C 4 1 5
4
V -
ACK
I C 3 1 2
High Voltage
Power Source
GND
4
Generating Circuit
Voltage Detection
H P _ D E T
Q 3 2 8
C 2 4 1 2 K ( Q / R / S )
R 4 5 8
H P _ M U T E
1 0 K
S W O U T
D G N D
P J 3 0 2
R 4 7 4
R J - 1 1 5 0 _ 0 1 - 0 5 0 0
1 / 2 P 1 0 0
Z C 6 5 0 0 0
C 4 1 6
R 4 5 3
R 4 6 2
C 4 3 1
L 3 1 5
H
SUBWOOFER
4 7 0
4 7 0
B L M 1 8 B D 6 0 1 S N 1 D
1 0 / 3 5
1 0 / 3 5
D 2 7 0 4 ( K )
D 2 7 0 4 ( K )
A - 6 7 0
Q 3 3 0
Q 3 3 1
A - U 6 7 0
A - U 6 7 1
V R 4
n o _ u s e
R K 1 1 K
S W 4
E C 1 2 E
n o _ u s e
A G N D
C 2 4 1 2 K ( Q / R / S )
Q 3 3 2
+ 3 . 3 M
- 7 A
R 4 7 5
L 4
n o _ u s e
B L M 1 8 B D
S W _ M U T E
C 4 2 4
1 0 K
R 1 7
n o _ u s e
0
1 / 2 5
R 4 5 9
R 1 8
3 3
n o _ u s e
2 2 0
R 1 9
3 3
n o _ u s e
R 4 6 6
n o _ u s e
D G N D
R 4 8 0
1 0 k
A 1 0 3 7 A K ( Q / R / S )
1 0 K
R 4 8 9
1 k
n o _ u s e
A G N D
R 4 8 1
1 0 k
0
IC305: NJM5532M-D
IC307: R3116N271A-TR-F
Voltage detector ICs
Dual low noise operational amplifier
V
DD
2
A OUTPUT
1
8
V+
A
B OUTPUT
Delay
A-INPUT
2
7
1
OUT
–
+
Circuit
3
B
6
A+INPUT
B-INPUT
+ –
Vref
4
5
B+INPUT
V-
3
GND
5
C
D
IC803: TS3USB221ARSER
IC310: NJM2904V
ESD protected, high-speed USB 2.0 (480-Mbps)
Dual operational amplifier
1:2 multiplexer/demultiplexer switch with single enable
A OUTPUT
1
8
V+
D+ 8
1
1D+
A
B OUTPUT
D−
NAME
DESCRIPTION
A-INPUT
2
7
7
2
1D−
–
+
OE
Bus-switch enable
3
2D+
A+INPUT
3
B
6
B-INPUT
S
Select input
+ –
2D−
4
D
GND
4
5
B+INPUT
nD
9
S
6
OE
S
OE
FUNCTION
X
H
Disconnect
L
L
D = 1D
H
L
D = 2D
Power supply (+)
Power supply (-)
Signal detect
Clock
Protection detect
Reset signal
★ Components having special characteristics are marked ⚠ and must be replaced
Panel key input
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
A-U670/A-670/A-U671/NS-BP401/NS-BP301
IC304: R5F101GEAFB#V0
Microprocessor
TIMER ARRAY
PORT 0
2
P00, P01
UNIT (8ch)
TI00/P00
ch0
P10 to P17
TO00/P01
PORT 1
8
TI01/TO01/P16
ch1
PORT 2
8
P20 to P27
TI02/TO02/P17
ch2
(TI02/TO02/P15)
PORT 3
2
P30, P31
TI03/TO03/P31
ch3
(TI03/TO03/P14)
PORT 4
2
P40, P41
(TI04/TO04/P13)
ch4
PORT 5
2
P50, P51
(TI05/TO05/P12)
ch5
(TI06/TO06/P11)
ch6
PORT 6
4
P60 to P63
TI07/TO07/P41
(TI07/TO07/P10)
ch7
PORT 7
6
P70 to P75
RxD2/P14
P120
PORT 12
WINDOW
4
P121 to P124
WATCHDOG
TIMER
P130
PORT 13
P137
LOW-SPEED
12-BIT INTERVAL
ON-CHIP
P140,
TIMER
OSCILLATOR
PORT 14
3
P146, P147
REAL-TIME
RTC1HZ/P30
CLOCK
ANI0/P20 to
8
AN17/P27
RL78
CODE FLASH MEMORY
A/D CONVERTER
2
ANI18/P147, ANI19/P120
SERIAL ARRAY
Microprocessor
UNIT0 (4ch)
CORE
DATA FLASH MEMORY
AV
REFE
/P20
RxD0/P11(RxD0/P16)
AV
REFE
/P21
UART0
TxD0/P12(TxD0/P17)
RxD1/P01
KR0/P70 to
KEY RETURN
6
TxD1/P00
UART1
KR5/P75
SCK00/P10
SI00/P11
CSI00
POWER ON RESET/
SO00/P12
POR/LVD
VOLTAGE
SCK01/P75
RAM
CONTROL
DETECTOR
CSI01
SI01/P74
SO01/P73
SCK11/P30
RESET CONTROL
SI11/P50
CSI11
SO11/P51
SCL00/P10
V
V
TOOL RxD/P11
ON-CHIP DEBUG
TOOL0/P40
IIC00
DD
SS
TOOL TxD/P12
SDA00/P11
SCL01/P75
IIC01
SYSTEM
RESET
SDA01/P74
CONTROL
X1/P121
SCL11/P30
X2/EXCLK/P122
IIC11
HIGH-SPEED
SDA11/P50
ON-CHIP
XT1/P123
SDAA0/P61(SDAA0/P13)
OSCILLATOR
SERIAL
XT2/EXCLKS/P124
INTERFACE IICA0
SCLA0/P60(SCLA0/P14)
VOLTAGE
SERIAL ARRAY
REGC
REGULATOR
UNIT1 (2ch)
BUZZER OUTPUT
PCLBUZ0/P140
RxD2/P14
UART2
2
(PCLBUZ0/P31),
RxD2/P14
TxD2/P13
INTP0/P137
LINSEL
CLOCK OUTPUT
PCLBUZ1/P15
CONTROL
INTP1/P50,
2
INTP2/P51
SCK20/P15
CSI20
MULTIPLIER and
INTP3/P30,
SI20/P14
CRC
DIVIDER
INTERRUPT
2
INTP4/P31
SO20/P13
MULITIPLY-
CONTROL
SCK21/P70
ACCUMULATOR
INTP5/P16
SI21/P71
CSI21
INTP6/P140
SO21/P72
DIRECT MEMORY
ACCESS CONTROL
INTP8/P74,
SCL20/P15
2
IIC20
SDA20/P14
INTP9/P75
SCL21/P70
BCD
IIC21
SDA21/P71
ADJUSTMENT
IC309: IR4302MTRPBF
Class D audio amplifier
CLIP
1
27
26
24
VP2
D
CLIP
COMP2
G
CLIP
8
VCC
OCH2
COMP2
DET
S
2
25
IN-2
IN-2
VS2
3
8bit
PWM
OTA2
DT2
GD
2
HO2
23
IN+2
4
OCL2
D
IN+2
VS2
G
Data
GND
S
7
WP
GND
UV
5
22
VN2
DETECT
GD
GD
LO2
VSS
6
VSS
PROT
CTRL
LO1
VAA
OTP
7
6
SCL
VAA
21
VN1
S
IN+1
VS2
8
OCL1
G
IN+1
OTA1
PWM
DT1
D
20
1
HO1
9
GD
IN-1
5
SDA
IN-1
VS1
COMP1
10
OCH1
18
COMP1
UVCC
S
CSD
G
11
FAULT
D
CSD
19
VP1
12
14 15
16
17
FAULT
IC312: BA15218F OP AMP
Dual high slew rate, low noise
operational amplifier
OUT1
1
8
V
CC
– IN1
2
7
OUT2
1ch
–
+
2ch
+ IN1
3
+
–
6
– IN2
GND
4
5
+ IN2
IC802: BD9876EFJ-E2
High efficient step down DC/DC converter with 3.0A FET
ON/OFF
EN
6
VCC
8
TSD
UVLO
Reference
REG
Current
Sense
VREF
AMP
Shutdown
BST
7
FB
Current
Error AMP
4
-
Comparator
+
-
1.0V
Q
+
R
200 m
∑
+
ohms
S
VOUT
LX
1
Soft
Start
Bus A
10 ohms
Oscillator
Bus B
300 kHz
GND
2
3
5
VC
SYNC
● ⚠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。
41
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