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A
B
C
HTR-2064/NS-B20/NS-C20/NS-SWP20
MAIN 2/2
1
2
3
AUDIO 1
OPTICAL
DIGITAL IN
IC22
IC22
AUDIO 2
COAXIAL
IC22
IC22
IC22
COAXIAL
4
AUDIO 3
(CD)
OPTICAL
AUDIO 4
(TV)
5
6
AUDIO 5
ANALOG IN
7
AUDIO 6
8
SUBWOOFER
OUT
9
10
★ 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.
84
D
E
F
Page 82
C4
to OPERATION (4)_CB192
to OPERATION (4)_CB191
IC23
IC23
IC24
IC22
IC24
IC25
IC25
to MAIN 1/2
SELECTOR
and E-VOLUME
G
H
Page 82
C2
MAIN (1)
FRONT L
SURROUND L
CENTER
SUBWOOFER
IC27
IC27
I
J
K
SUBWOOFER
(SPEAKER OUT)
SUBWOOFER
(PRE OUT)
L
M
N
IC21: R2A15220FP
8-channel electronic volume with 11 input selector and tone control
50
49 48
47
46 45
44
43
42
41
40
39
38 37
36
35
34 33
32
31
TRER
MUTE
51
30
MCU
AVEE
AVCC
I/F
A VEE
52
29
BASSR2
ADCL
53
28
BASSR1
0/-6/-12/-18dB
ATT
TREL
ADCR
54
27
SUB2
AGND
55
26
BASSL2
MAIN
INR1
56
Bass/Treble
25
BASSL1
0~-95dB,
-14~+14dB
+42~0dB
-∞
(2dBstep)
(0.5dBstep)
INL1
57
(0.5dBstep)
24
FRC
Bypass
Tone
INR2
58
Tone+MIX
23
FR Pre-OUT
Tone
SUB
INL2
59
+42~0dB
22
FROUT
(0.5dBstep)
Tone+MIX
Tone
Tone
INR3
60
21
AGND
Bypass
INL3
61
20
FLOUT
0~95dB,
Bass/Treble
-∞
-14~+14dB
INR4
62
(0.5dBstep)
(2dBstep)
19
FL Pre-OUT
INL4
63
FLC
18
+42~-95dB
-(0.5dBstep)
INR5
CC
64
17
INL5
COUT
65
16
+42~-95dB
INR6
66
-∞(0.5dBstep)
15
AGND
+42~-95dB
-∞(0.5dBstep)
INL6
67
14
SWOUT
INR7
68
13
SWC
+42~-95dB
INL7
69
12
SRC
-∞(0.5dBstep)
INR8
70
11
SR Pre-OUT
REC
INL8
71
10
SROUT
+42~-95dB
-∞(0.5dBstep)
INRA/RECR1
72
9
A GND
INLA/RECL1
73
8
SLOUT
74
7
INR9
SL Pre-OUT
+42~-95dB
-∞(0.5dBstep)
INL9
75
6
SLC
INRB/RECR2
76
5
AGND
INLB/RECL2
77
4
SBRC
INR10/RECR4
78
3
SBR Pre-OUT
INR10/RECL4
SBR OUT
79
2
INR11/RECR5
80
1
AGND
81
82 83
84 85
86
87
88
89
90
91
92 93
94
95
96 97
98
99 100
IC22: TC74VHCU04FT
IC23-25, 27: NJM4565M (TE1)
Hex inverters
Dual operational amplifier
V+
1A
1
14
VCC
8
1Y
2
13
6A
2A
3
12
6Y
2, 6
–INPUT
OUTPUT
1, 7
2Y
4
11
5A
+INPUT
3, 5
3A
5
10
5Y
3Y
6
9
4A
V–
GND
7
8
4Y
4
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