A
B
C
D
E
F
G
H
I
J
K
L
RX-V540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540
RX-V440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440
79
SCHEMATIC DIAGRAM (FUNCTION 1/2)
1
2
3
4
5
6
7
8
9
★
All voltages are measured with a 10M
Ω
/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.
F-SW1
F-SW1: INPUT FUNCTION 1
F-SW2: INPUT FUNCTION 2
*
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
IC301: BD3841FS
Function Switch
DGND
F-SW2
CL
DA
VEE
BIAS
VCC
RECA1
RECA2
RECB1
RECB2
RECC1
RECC2
OUT1
OUT2
INI1
INI2
INA1
INA2
INB1
INB2
INC1
INC2
IND1
IND2
INE1
INE2
INF1
INF2
ING1
ING2
INH1
INH2
LOGIC
+
–
+
–
+
–
+
–
43
44
45
46
47
48
49
50
51
52
53
54
55
56
28
27
26
25
24
23
22
21
20
19
18
17
16
15
42
41
40
39
38
37
36
35
34
33
32
31
30
29
1
2
3
4
5
6
7
8
9
10
11
12
13
14
IC302: BD3815KS
Audio Sound Processor
GOUTFL
VINFL
GOUTFR
VINFR
TNFR
TNFL
BNF1R
BNF2R
BNF1L
BNF2L
GND10
OUTFR
GND9
OUTFL
GND8
OUTSW
GND7
OUTSR
GND6
OUTSL
GND5
OUTC
GND4
OUTSB
VCC
GND3
VEE
VDD
INFRA
INFLA
INSWA
INSRA
INSLA
INCA
INSBA
INFRB
INFLB
INSWB
INSRB
INSLB
INCB
INSBB
GND1
GOUTSW
VINSW
GOUTSR
INVINSR
GOUTSL
VINSL
GOUTC
VINC
GND2
PORTA
PORTB
DA
CL
TONE
A
SW1
B
A
B
LOGIC
A
B
A
B
A
B
A
B
A
B
A
B
A
B
+
–
+
–
+
–
+
–
+
–
+
–
+
–
SW2
A
B
SW3
+
–
+
–
+
–
+
–
+
–
+
–
+
–
1
2
3
4
5
6
7
14
13
12
11
10
9
8
IC303: BD3812F-E2
Audio Sound Processor
OUT1
OUT2
SEL
DGND
MUTE
DA
CL
IN1
AGND1
IN2
AGND2
VEE
AGND3
VCC
LOGIC
+
–
IC305, 306: TC74HC4053AF
Analog Multiplexer/Demultiplexer
16
VDD
6
INHIBIT
11
15
14
9
A
C
B
8
VSS
7
VEE
12
0X
13
1X
2
0Y
1
1Y
5
0Z
3
1Z
LEVEL
CONVERTER
10
BINARY TO 1-OF-8
DECODER WITH INHIBIT
SW
SW
SW
SW
SW
SW
4
Z-COM
X-COM
Y-COM
INPUT STATES
INHIBIT
0
0
0
0
0
0
0
0
1
"ON" CHANNNEL (S)
0X, 0Y, 0Z
1X, 0Y, 0Z
0X, 1Y, 0Z
1X, 1Y, 0Z
0X, 0Y, 1Z
1X, 0Y, 1Z
0X, 1Y, 1Z
1X, 1Y, 1Z
NONE
C
0
0
0
0
1
1
1
1
X
B
0
0
1
1
0
0
1
1
X
A
0
1
0
1
0
1
0
1
X
IC307: NJM2068MD
IC308, 309:
µ
PC4570G2
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
RX-V540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540
CENTER
MAIN L
REAR L
0.2
0.2
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
0.1
0
0
0
0
0
0
0
0
0
0
0.1
0.1
0.1
0.1
5.7
0.1
0.1
0.1
5.7
5.7
0
0
-5.6
0
0
-5.6
-5.6
0
0.1
0.1
0.1
0.1
0.1
11.7
-11.9
0
0
0
0
0
0
0
0
-6.9
7.0
7.0
0
0
0
0
0
0
0
0
0
-11.9
11.7
0
0
0
0
0
0
0
0
0
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
-11.9
0.1
11.7
0
0
0
0
0
0
0
0
0
0
0
0.1
7.7
6.8
-6.8
-6.8
-6.8
-7.6
-12.0
11.7
7.0
0.1
0.1
-6.9
0
0
0
0
0
0
0
0
0
0
7.0
0
-6.9
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
-11.9
-11.9
0
0
MUTE
MUTE
INPUT/
REC OUT
SELECTOR
AUDIO
SOUND
PROCESSOR
Page 77
to DSP
F1
Page 80
to FUNCTION (4)
D3
Page 87
to POWER (1)
A5
Page 83
to OPERATION (1)
A7
Page 83
to OPERATION (4)
J4
1.5K
1.5K