Accuphase E-308 - Master Circuit Diagram; Overall System Interconnections

K3
K2 K1
Volume Ass'y
K8 K7
K4
K3
K1
K6
K5 K2
Tone Amp. Ass'y
K2 K1
K3
Head Phone Ass'y
K1 K4 K2 K3 K5 K6 K7 K8
I/O Relay Ass'y
K4 K5 K7 K1 K3
K2 K8
K11
K9
K10
K6
K13 K12
Protection Ass'y
+
Left
+
Right A Speaker A Speaker
- -
C004 223 /1J
C003 103J
/2D
D001
S15VB20
N
(W)
AC100/120/230V 50/60Hz
C002 103J /2D
C005 223 /1J
(W)
N
K3 K2K1
Rch Power Amp. Ass'y
K3 K2K1
Lch Power Amp. Ass'y
K2 K3 K1
Balanced Input Amp. Ass'y
K2
K3
K1
K4
Connector board Ass'y
K7
K2 K5
K10 K8 K11 K9 K4
K6 K1 K3
Logic Ass'y
K1
Input Selector Ass'y
K1
Selector Led Ass'y
K1
Receiver Ass'y
RED VIO
RED VIO
RED VIO
Option2 Board
28.3V/8ohm
Option1 Board
K1
Display Ass'y
+
Left
+
Right B Speaker B Speaker
- - 28.3V/8ohm
2 1
S001
!
!
!
!
Attention mark indicating critical components for safety.
Replacement must be made with identical parts of specified part number.
CAUTION
K1
K3 K2 K5 K7 K4 K6
JK1
Voltage Selector Ass'y
C001 224M
/2E
Lch METER
+-
Rch METER
+-
BLK BLK BLK
WHT
716-0673
716-0674
716-0679
716-0676
712-0092
716-0680
712-0094
721-0075
716-0677
723-0094 721-0076 723-0092
717-0079 717-0079
720-0068
ORG
RED
GRY
YEL BRN
WHT
RED
BLK BLU
510-3026
RED
0V
100V 117V
0V
100V 117V
ORG
!
BLU
GRY
BRK
VIO
ORG
K1
716-0675
Thermal Sw. Ass'y
BRK
K1
Lamp Ass'y
723-0093
K1
K3
K2 K5
K4
Line Amp Ass'y
712-0093
GRY
1 2 3 4
BLUE
1 2 3 4
WHITE
230V 117V 100V
T6.3A L250V at 100-120V T3.15A L250V at 220-240V
Ass'y No.
716-0680-11
Connector No.
K6 , K7
716-0680-12 K4 , K5 716-0680-13 K2 , K3
AC 100V AC 120V AC 230V
CONNECTOR SETTING TABLE
WHITE BLUE WHITE BLUE WHITE BLUE
K1
716-0678
Sw. Ass'y
AC100V only
T001
- 1 7 -
E
-
3
0
8
M
A
S
T
E
R
C
I
R
C
U
I
T
D
I
A
G
R
A
M
I/O Relay Ass'y