Yamaha RX-V620 Service Manual page 58

A B C
RX-V620/HTR-5460/RX-V620RDS
SCHEMATIC DIAGRAM (INPUT 1/2)
1
2
RJ-1073F-09-0351A
3
IC301, 303 : LC78211
Analog Function Switch
L1 1 30 R1
L2 2 29 R2
L3 3 28 R3
L4 4 27 R4
LCOM1 5 26 RCOM1
L5 6 25 R5
L6 7 24 R6
LCOM2 8 23 RCOM2
L7 9 22 R7
4
L8 10 21 R8
LCOM3 11 20 RCOM3
V 19 LEVEL SHIFTER
DD
V 16
SS
LATCH 14 D1
V 12
EE
RES 18 15 CL
SHIFT REGISTER
S 17 13 CE
IC302, 304 : LC78213
Analog Function Switch
L1 1 30 R1
5
L2 2 29 R2
LCOM1 3 28 RCOM1
L3 4 27 R3
L4 5 26 R4
LCOM2 6 25 RCOM2
L5 7 R5
24
L6 8 23 R6
LCOM3 9 22 RCOM3
L7 10 21 R7
LCOM4 11 20 RCOM4
V DD 19 LEVEL SHIFTER
V SS 16
14 D1
LATCH
V EE 12
15 CL
RES 18 SHIFT REGISTER
S 17 13 CE
6
µ
IC311–317, 319, 320 : PC4570G2
Dual OP-Amp
OUT 1 1 8 +V CC
–IN 1 2 7 OUT 2
+ – + –
+IN 1 3 6 –IN 2
–V CC 4 5 +IN 2
7
8
0
0
9 IC308 : LC72722
RDS Signal Processor
1 5 6
VDDA
3 + CLOCK 14 VDDD
PLL
RECOVERY
REFERENCE (57kHz)
(1187.5Hz)
VOLTAGE
VSSA 4 15 VSSD
VREF
57kHz
ANTIALIASING SMOOTHING DATA
MPX IN
2 bpf 19 RDS-ID
FILTER FILTER DECODER
(SCF)
DO
20
CL 21 SYNC
RAM ERROR CORRECTION SYNC/EC 18
DI 22 CCB (24 BLOCK DATA) (SOFT DECISION) CONTROLLER
24 SYR
CE 23
CLK(4.332MHz)
10 T1 7
MEMORY
CONTROL
T2 8
TEST SYNC SYNC
DETECT-1 DETECT-2
T3 9 OSC/DIVIDER
T4 10
11 16 17 13 12
71
D E F
PHONO MM
EQ AMP
10.7
3 8
0 1
2 0
RL
0
6
0 7
5
0
0 4
–10.6
C
BUFFER
11.2
8
3
0 1
INPUT SELECTOR
2
0
0
6
0 7
5 0
0 4
–11.1
–11.2
8 5
7 0
6
0
0
2
1 0
0 3
4
0
–11.1
0
–11.8 0 –11.8
G H I
P-E73
P-E72
L-5
A-4
RL
11.2
0.1
0.1 0.1
8
0.1
5
7
0.1
0.1 6
–0.1
2
0.1
0.1
–0.1 3
1
0.1 0.1 4
–11.2
C
11.2
0.1
0.1 0.1
8
0.1
5
7
0.1
6
–0.1
2
0 0
–0.1 3
1
4
0.1 0
–11.2
FL
0.1 0.1
0.1
0.1 0
0.1 0
0.1 0.1
0.1
0.1 0.1 11.2
0.1
8 L
0.1 5
L
0 7
6 0
0
2
0 1
0.1 3 0
0
0.1
4
–11.2
0.1
0.1 0.1
C RL FL
L
P-E72 P-E70
D-5 H-1
J K
P-E72
P-E72
A-6
A-1
11.2 RL
0 8
0
5
0
7
6
0 0
2 0
0
1
3 4 –11.8 0
–11.1
C
0
–11.8 0
11.2
0 8
0
5
0 7
6
–11.8 –11.8
0 0 0 0
0
2 –11.8
0 1
3
4 0 0 0
–11.1
0.1 0.1
0.1
0.1 0.1
0.1
0.1
0.1
0.1
0.1 0.1
0.1
0.1 0.1
0.1 0.1 0.1 0.1
0.1
0 0.1 0
11.2 L
0 8
0
3
0
1
2
0
0
6
0
7
5
4
–11.1
L M N
L
P-E74
A-6
P-E73
H-3
CIRCUIT CHANGES BY MARKET. X : NOT USED
RDS DECODER
t
Point t (Pin 12 of IC308)
V : 1V/div, H : 0.2 µsec/div
DC, 1 : 1 probe
0V
Conditions
• INPUT: DVD auto
• PROGRAM: PRO LOGIC DSP
* All voltage are measured with a 10MΩ/V DC electric volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.
O