A
1
2
3
4
5
6
7
8
9
10
B
C
D
E
F
G
H
I
J
K
L
M
N
83
MAIN 1/2
HTR-2064/NS-B20/NS-C20/NS-SWP20
★
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.
W1
CB51
CB2
CB3
CB1
W2
FRONT L
SURROUND L
CENTER
FRONT L
CENTER
SURROUND L
SUBWOOFER
SUBWOOFER
IC1, 2
: STK433-330N-E
3-channel AF power amplifier, stand-by circuit built-in
SUB
Pre
Driver
CH1
+
–
Pre
Driver
CH2
Stand-by Circuit
Pre
Driver
CH3
9
5 4 6 7
10
14 15 16 17
19 18
3
8
11
12
1
2
+
–
+
–
13
IC1, 2
: STK433-330F-E
3-channel AF power amplifier, stand-by circuit built-in
SUB
Pre
Driver
CH1
+
–
Pre
Driver
CH2
Stand-by Circuit
Pre
Driver
CH3
9
5 4 6 7
10
14 15 16 17
19 18
3
8
11
12
1
2
+
–
+
–
13
MAIN (1)
MAIN (2)
MAIN (3)
SPEAKERS
CENTER
SPEAKERS
to MAIN 2/2
to MAIN 2/2
to MAIN 2/2
FRONT
L/R
SUBWOOFER
SURROUND
L/R
5 k-ohms
10 W
5 k-ohms
10 W
R model
VOLTAGE
SELECTOR
to POWER TRANSFORMER
to POWER TRANSFORMER
Notes:
Safety measures
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Note:
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