Yamaha RX-V730 Service Manual page 42

A B
SCHEMATIC DIAGRAM (FUNCTION 2/2)
1
2
3
4
5
6
7
MUTE
8
9
C D E
RX-V630/RX-V630RDS/HTR-5560/HTR-5560RDS/DSP-AX630/DSP-AX630SE
Page 67
to FUNCTION (1)
Page 74 C1
to POWER (6)
F G
except DSP-AX630SE
C7 Page 67 D7
to FUNCTION (1)
FM/AM TUNER
C-INPUT
SELECTOR
Y-INPUT
SELECTOR
Point 3 Pin 3 of IC806
H All v oltages are measured with a 10MΩ /V DC electric volt meter.
H Components ha ving special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
H Schematic diag ram is subject to change without notice.
H I J
RX-V730/RX-V730RDS/RX-V630/RX-V630RDS
HTR-5560/HTR-5560RDS/DSP-AX630/DSP-AX630SE
IC502: LC78211
Analog Function Switch
1
L1
2
L2
L3 3
4
L4
5
LCOM1
6
L5
7
L6
8
LCOM2
9
L7
L8 10
11
LCOM3
19
V DD
16
V SS
12
V
EE
18
RES
S 17
IC551, 802, 803: TC74HC4051AFEL
Analog Multiplexer/Demultiplexer
INHIBIT VCC
6 16
A
11
LEVEL
B 10
CONVERTER
C
9
GND
8
VEE 7
0 13
1 14
2
15
3 12
4
1
5 5
6
2
7
4
IC552: LA7108M
Video Amp
VIN1+
1
NFB1 2 6dB
MUTE1 3
VIN2+ 4
6dB
NFB2
5
-VCC1 6
VIN3+ 7
6dB
8
NFB3
IC571: LC72722
RDS Decoder
1
VDDA 3
REFERENCE
VOLTAGE
VSSA
4
57kHz
ANTIALIASING
MPX IN 2
FILTER
(SCF)
DO
20
CL 21
DI 22 CCB (24 BLOCK DATA)
CE 23
T1
7
T2 8
TEST
T3 9
T4 10
11 16 17
IC807: LA7109
75Ω Video Driver
VIN1+
1
NFB1 2
6dB
MUTE1 3
VIN2+
4
6dB
NFB2 5
-VCC1 6
7
VIN3+ 6dB
NFB3 8
N.C. 9
N.C. 10
VIN4+ 11 11
NFB4 12
6dB
MUTE2 13
VIN5+
14
6dB
NFB5 15
-VCC2 16
VIN6+ 17
6dB
NFB6 18
K L
30
R1
29
R2
28 R3
27
R4
26
RCOM1
25
R5
24
R6
23 RCOM2
22
R7
21
R8
20
RCOM3
LEVEL SHIFTER
14 D1
ZZ
LATCH
15 CL
ZZ
SHIFT REGISTER
13 CE
ZZ
BINARY TO 1-OF-8
DECODER WITH INHIBIT
SW 3 COM
SW
SW
SW
SW
SW
SW
SW
INPUT STATES
"ON" CHANNNEL
INHIBIT C B A
0 0 0 0 0
0 0 0 1 1
0 0 1 0 2
0 0 1 1 3
0 1 0 0 4
0 1 0 1 5
0 1 1 0 6
+VCC
16
0 1 1 1 7
1 X X X NONE
DR 15 VOUT1
GND
14
13 VOUT2
DR
MUTE2
12
11 VOUT3
10 MUTE3
DR
9 -VCC2
5 6
CLOCK 14 VDDD
+ PLL
RECOVERY
(57kHz)
(1187.5Hz)
15 VSSD
VREF
SMOOTHING DATA
bpf 19 RDS-ID
FILTER DECODER
SYNC
RAM ERROR CORRECTION SYNC/EC 18
(SOFT DECISION) CONTROLLER
24 SYR
CLK(4.332MHz)
MEMORY
CONTROL
SYNC SYNC
DETECT-1 DETECT-2
OSC/DIVIDER
13 12
+VCC1
36
35 VOUT1
DR
34 GND
VOUT2
33
DR
32 DR CTL2
31 VOUT3
DR 30 MUTE4
29 -VCC4
28 N.C.
27 N.C.
26 +VCC2
26
VOUT4
DR 25
24 GND
VOUT5
23
DR
22 DR CTL1
21 VOUT6
MUTE3
DR 20
19 -VCC3
69