ABCDEFGH I JKL
RX-V530/RX-V530RDS/HTR-5550/HTR-5550RDS/DSP-AX530
RX-V430/RX-V430RDS/HTR-5540/HTR-5540RDS/DSP-AX430
67
SCHEMATIC DIAGRAM (FUNCTION 1/2)
1
2
3
4
5
6
7
8
9
★ All voltages are measured with a 10MΩ/V DC electric volt meter.
★ Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
x: NOT USED
O: USED / APPLICABLE
IC302: BD3811K1
Sound Processor
73, 74 VCR L/RCD-R L/R 71, 72
47k
CD-R L/R
47k
CD L/R
47k
TUNER L/R
47k
V-AUX L/R
AUDIO INPUT
47k
VCR L/R
47k
D-TV L/R
47k
DVD L/R
-1
47k
47k
INPUT ATT
0, -6, -12, -18dB
BASS
BOOST
0, 4, 8, 12dB
BASS
±14dB
2dB step
TREBLE
±14dB
2dB step
OUTPUT
GAIN
0.5 - 18dB
2dB step
MASTER
VOLUME
0 - 100dB
1dB step
+
–
+
–
79, 80
1, 2
77, 78
9, 10
7, 8
5, 6
3, 4
W
L
47k
C
SW OUT
DIGITAL
CONTROL
L
R
19
17
6 CH INPUT
FROM DSP
TO DSP
47k
+
–
+
–
RR
47k
RL
C OUT
47k
+
–
+
–
R
47k
L
16
15
13
14
24
22
RR OUT
+
–
+
–
RL OUT
47k
R
47k
RL
47k
RR
47k
C
47k
CH2
SW
21 24 26 25 27 28 46 47 48
+
–
+
–
R OUT
+
–
+
–
L OUT
35
36
38
37
57
55
µ-COM
Hi Level >2.2V
Low Level <1.0V
IC303, 304: µPC4570G2
Dual OP-Amp
–+
OUT
1
–IN
1
–V
CC
+V
CC
OUT
2
1
2
3
4
5
+IN
1
–IN
2
+IN
2
–+
6
7
8
IC305: MM74HC4053SJX
Triple 2-Channel Analog Multiplexer
16
11
10
4
7
OUT/IN
AX or AY
VSS
8
GND
C
B
A
VCC
3
CY
5
CX
1
BY
2
BX
IN/OUT
13
AY
12
AX
TO
Logic
Level
Conversion
Logic
Level
Conversion
Logic
Level
Conversion
OUT/IN
CX or CY
OUT/IN
BX or BY
9
INH
Logic
Level
Conversion
Binary to 1
of 2 Decoders
with INHBIT
Binary to 1
of 2 Decoders
with INHBIT
Binary to 1
of 2 Decoders
with INHBIT
YG
TG
TB
TC
TG
IC306: NJM78L05A-T3
Voltage Regulator
INPUT
OUTPUT
GND
Point 6 emitter of Q309
and collector of Q308
POWER ON
(Connect the power cord)
POWER OFF
(Disconnect the power cord)
A Q309 E
B Q308 C
Point 1 Pin 13 of IC301
MAIN CPU
MUTE
SOUND
PROCESSOR
RESET
: RX-V530/RX-V530RDS/HTR-5550/HTR-5550RDS/DSP-AX530 only
Page 68 C1 Page 68 B1
Page 68
B1
RX-V530/RX-V530RDS/HTR-5550/HTR-5550RDS/
DSP-AX530/HTR-5540RDS/RX-V430RDS: Page 72
A4
RX-V430/HTR-5540/DSP-AX430: Page 73
A4
Page 69
F8
Page 69
G8
Page 70 F1 Page 69
to OPERATION (1)
A6
5
2
3
6
7
1
5
6
2
3
7
1
8
4
8
4
1
2
A
B
MAIN L
CENTER
L
REAR L
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
6.7 12.0
-6.7
12.1
5.6
0
4.9
4.9
0
-5.6
0
7.4
7.4
0
-7.4
-7.4
0
0
0
0
0
0
0
0
0
5.6
0
0
-5.6
0
0
0
0
0
0
0
0
-0.1
12.0
-12.0
0
0
0
12.0
-12.0
0
0.7
0
0
0.7
0
0
1.9
0
0
0
4.7
4.9
4.9
1.2
4.9
4.9
4.9
0.9
1.9
0.6
0
4.7
4.9
0
0.2
0
0
0
4.9
4.9
0
0.1
0
4.9
4.9
4.9
4.9
4.9
0
0
0
0
4.9
0
0
0
0
4.7
2.4
0
2.1
4.9
4.8
0.1
4.8
4.8
0
4.8
4.8
0
4.9
4.7
4.9
0.1
0.1
4.9
4.9
0
4.9
5.0
0
4.9
4.9
4.9
0
0
4.8
0
4.9
0
0
4.9
4.9
4.9
0
0
4.7
0
4.9
0.1
0.4
0
0
0
0
4.9
4.9
-11.9
0
0
0
0
6.8
13.3
0
0.7
5.6
0.7
13.3
13.3
12.6
0
5.6
6.87.3
4.9
5.6
0
0
4.9
4.7
0
0
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