Accuphase A-45 - page16 Protection;Diode;Meter;LED

COM
L+
R+
AC33V -43.5V +43.5V
+43.5V
M_MUTE
LED-
M_+20dB
GND L+OUT R+OUT L+IN L-(GND) R-(GND) R+IN
!
Attention mark indicating critical components for safety.
Replacement must be made with identical parts of specified part number.
G
1
O1
2
H1
3
I1
4
V-
5
I2
6
H2
7
O2
8
V+
9
IC1
TA7318P-2
OL
1
CV
2
LH
3
AC
4
G
5
RD
6
MT
7
VC
8
IC3 UPC1237HA
2 5 16
3 4
RELAY4
362-2230-00
4.7M R8 4.7M R10
150k
R11
2W2.2kR4
2W2.2k
R1
2W 470
R37
2W10
R39
2W10
R38
22n C19
2W10
R34
2W10
R33
22n
C16
D2 MA165
D1 MA165
D5 MA167
4.7u
50V
C10
2W2.4k
R9
2W
2.4k
R7
100nC3100nC4
D3
HZ153L
D4
HZ153L
2.2R3
4.7u
35VC7
4.7u
35V
C14
10u 16V
C5
10u
16V
C12
D8
MA165
D6 MA165
-43.5V +43.5V GND
to Balance Input Ass'y K3
to Connector Ass'y K2
to Output Terminal
from Power Amp Ass'y
100k
R18
1
2
3
4
K1
308-0407-00
TS.L
from Power Amp Ass'y K2
-EL/FL
Q2
2SC2785_
-EL/FL
Q1
2SC2785_
1
4
6
8
16
13
11
9
RELAY1
362-2232-00
62k
R31
7.5kR21
33kR13
33kR6
33kR16
220pC6
220p
C13
1 2 3 4
K3
308-0408-00
L+IN R+IN
L2
506-0009-00
L1
506-0009-00
3
2
1
100k
VR2
583-0156-00
3
2
1
100k
VR1
583-0156-00
3
2
1
2k VR3 583-0236-00
3
2
1
2kVR4
583-0236-00
1
2
3
4
5
10
9
8
7
6
RELAY3
362-0202-00
R NFB L NFB
TS.R
1 2 3 4 5
K4
308-0508-00
GND BRG
From Diode(B) Ass'y
1
2
3
4
K5
308-0407-00
2 5 16
3 4
RELAY2
362-2230-00
22nC18
22n C17
576/24V
-Y
Q3
2SA1428_
1W
3.3k
R35
576/24V
24V 2880 ohm
24V 576ohm 24V 576ohm
220
R2
220
R5
7.5kR12
33kR15
56k
R19
47k
R20
62k
R22
13k
R17
62k
R29
22k
R26
56k
R28
10k R30
560 R32
10k R23
10k
R14
560
R25
3.3kR36
2k R27
7
6
5
IC2B
UPC4570C
1
8
2
3
4
IC2A
UPC4570C
10k
R24
D71SS81
1 2 3 4 5 6 7 8
K6
308-0807-00
to Meter Connector K1
L -30dBR -30dB
L 0dBR 0dB
100u
25V
C9
220u
10V
C8
330n
C1
330n
C2
100nC11
+8.4V -8.4V
+15.5V
-15.5V
K7 K8
2W 470R40
1
2
3
4
K2
308-0417-00
COM
22nC15
!
-
1
6
-
P R O T E C T I O N A S S ' Y ( 7 2 0 - 0 0 7 8 - 0 0 )
K1
K2
D1
S15VB20
2W
10
R1
309-5167-04
309-5166-04
BLU
BRN
to AC INLET N(W)
to INRUSH PROTECTION Ass'y K4
100nC1
0.5W
15kR1
0.5W
15k
R2
1 2 3 4
K1
308-0408-00
10nC2
10nC3
K2
AC1
AC2
-
+
+
-AC
AC
D1
to POWER TRANS
to PROTECTION Ass'y K3
to MAIN CAPACITOR
309-5174-04
1 2
K1
308-0214-00
+-
Meter Unit
to Protection Ass'y K2
D I O D E ( A ) A S S ' Y
D I O D E ( B ) A S S ' Y M E T E R C O N N E C T O R A S S ' Y
( 7 1 6 - 0 7 6 7 - 0 0 )
( 7 1 6 - 0 7 6 6 - 0 0 )
PL3
176-7501-00
PL2
176-7501-00
PL1
176-7501-00
1 2
K1
308-0206-00
0.1
R1
M E T E R L A M P A S S ' Y
( 7 1 6 - 0 7 6 5 - 0 0 )
( 7 2 3 - 0 1 3 5 - 0 0 )
LED_UNB
LED_BAL
LED_BRIDGE
GND
13V
PROT
to CONNECTER Ass'y K4
LED+
LED_-20dB
D6
SEL2610C
D7
SEL2610C
D3
SEL2610C
D2
SEL2610C
D4
SEL5220S
D1
SDPW3DG0B0-J
D8
SDPW3DG0B0-J
200
R7
200
R6
1.5kR4
1.5kR2
1
2
3
4
5
6
7
8
K1
308-0809-00
-O/Y
Q1
2SC2710_
D5
HZ2ALL
-O/Y
Q2
2SC2710_
750
R5
0.5W
510 R1
1.5kR3
L E D A S S ' Y
( 7 2 3 - 0 1 3 4 - 0 0 )