Yamaha DSP-AX440, Service Manual

Page: 81 / 140

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
81
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
+ – + – + – + –
+
–
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-V440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440
Page 78
to DSP
F1 Page 82
to FUNCTION (4)
D3
Page 88
to POWER (1)
A5
Page 83
to OPERATION (1)
A7 Page 83
to OPERATION (4)
J4
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
+
–
+
–
+
–
+
–
+
–
+
–
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
1.5K
1.5K