Yamaha RX-V540, Service Manual

Page: 82 / 134

RX-V540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540
RX-V440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440
A
1
2
3
4
5
6
7
8
9
B C D E F G H I J K L
80
SCHEMATIC DIAGRAM (FUNCTION 2/2)
★
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.
IC731, 734, 822: 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
IC602: NJM78L05A-T3
Voltage Regulator
INPUT
OUTPUT
GND
IC603: LC72722
RDS Decoder
+
REFERENCE
VOLTAGE
57kHz
bpf
(SCF)
CCB
TEST
PLL
(57kHz)
ANTIALIASING
FILTER
SMOOTHING
FILTER
RAM
(24 BLOCK DATA)
ERROR CORRECTION
(SOFT DECISION)
SYNC/EC
CONTROLLER
SYNC
DETECT-1
DATA
DECODER
CLOCK
RECOVERY
(1187.5Hz)
MEMORY
CONTROL
OSC/DIVIDER
VREF
CLK(4.332MHz)
SYNC
DETECT-2
VDDA
VSSD
VDDD
RDS-ID
SYNC
SYR
VSSA
MPX IN
DO
CL
DI
CE
T1
T2
T3
T4
T5 T6 T7
X IN
VREF FL OUT C IN
X OUT
3 14
15
19
18
24
1 5 6
4
2
20
21
22
23
7
8
9
10
11 16 17 13 12
IC701, 702, 801: LA7956
Video Switch
1 2 3 4 5 6 7 8 9
VIDEO
OUT
A B VIN1 GND VIN2 VCC VIN3 VIN4
DRIVER
6dB
AMP
CONTROL
4 INPUT 1 OUTPUT
VIDEO SWITCH
IC732, 735: TK15420M
Video Amp
– +
1
2
3
4 5
– +
6
7
8 OUT A
–IN A
+IN A
VEE
VCC
OUT B
–IN B
+IN B
IC733: TC74HCU04AFEL
Hex Inverters
1A
1Y
2Y
VCC
6A
1
2
3
4
11
2A 6Y
5A
12
13
14
3A
3Y
5Y
4A
5
6
7 4Y 8
9
10
GND
IC821: LA7104M
Video Amp
15 VOUT1
13 VOUT2
11 VOUT3
10 MUTE2
9 -VCC2
12 DR CTL
16 +VCC
14 GND
2
NFB1
4 VIN2+
6
-VCC1
7
VIN3+
8
NFB3
5 NFB2
1 VIN1+
3
MUTE1
DR 6dB
DR 6dB
DR 6dB
Point
2
Pin 13 of IC601 Point
3
Pin 12 of IC603
Point
4
Emitter of Q601 and collector of Q602
POWER ON
(Connect the power cord)
POWER OFF
(Disconnect the power cord)
RX-V540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540
Y/C MIX
Y SELECTOR
Cb SELECTOR
Cr SELECTOR
C-INPUT
SELECTOR
Y-INPUT
SELECTOR
INPUT
SELECTOR
S-SIGNAL DETECTOR
to FUNCTION (7)
G5 Page 84
to VIDEO
D1
to FUNCTION (5)
I1
to FUNCTION (6)
E1
Page 79
to FUNCTION (1)
F2
Page 77
to DSP
E1 Page 83
to OPERATION (1)
E8
P
age 85
to MAIN (2)
F6
P
age 85
to MAIN (1)
E1
to FUNCTION (4)
C3
Page 85
to MAIN (3)
H1
to FUNCTION (4)
B3
x: NOT USED
O: USED / APPLICABLE
A
B
4
A
4
2
3
B
5.6
13.4
13.4
13.3
12.6
5.6
7.3 6.8
6.8
0
0
0
0
0
0
0
0
0
0
5.6
4.9
4.6
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
-4.9
-4.9
-4.9
-4.9
-4.9
5.0
5.0
5.0
4.9
4.9
4.9
4.8
0.2
1.6
2.2
0.1
0.1
0.1 0.1
0.1
0.4
0.4
0.7 0.7
0.1
0.1
0.1
0.1
0.1
0.1
0.6
4.9 4.9
4.9
4.9
4.9
4.9
0 0
0
0
0
0
0
0
0
4.9
4.0
4.0 4.0 4.0 4.0
4.9 4.9
6.4
0 11.5
4.0 4.0
4.0 4.0 4.9
4.9
6.0
4.0 4.0 4.0 4.9
4.9
0.1
0
0
11.5
11.5
4.9
-4.9
4.5
4.5 4.5 5.0
5.0
1.5
11.5
11.5
6.6
6.4
6.4
6.4 6.4
7.0
7.4
7.1
0.1
0
5.8
11.5
11.5
5.4 5.4
6.6
6.6
6.1
6.0
6.0
6.0
6.0
7.1
7.0
1.5
4.9
5.0
4.5
4.5
2.7
0
0
0
0
0
0.6
0.1
0.1
0.1
0.3
0.3
0.1
0.1
0.1
4.2
5.0
0.1
0.1
0.1
0.8
0.8 0.8
1.5
0.8
0.1
5.0
-0.5
5.0
5.0
5.0
4.9
-4.9
-4.9
4.5
0 0
0
0
0
0.2
0.7
0
0
0
0
0
0
0
0
0
5.0
0
5.0
0
0
0
0
0
0
0
0
0.9
0
0
0
0
0
0
0
0
0.1
4.9
4.9
0
0 0 0 0 0 0
0 0 0 0 0 0 0
0
0 0 0 4.9
4.9 4.9
4.5 4.9 4.9 4.9 4.9 4.9 4.9
4.3
4.9 4.9 4.9 4.8 4.8 4.8 4.6 2.4 2.3 4.7 0.3
4.9
4.9
4.8
4.8
4.8
4.8
4.7
0.6
1.6
1.2
0
0
0
0
0
0
1.8
4.7
0.6
0
0.6
0.6
2.9
2.3
4.9
4.9
4.9
-11.9
-11.9
-11.9
0
0
0
2.3 2.3
2.3 2.2 2.0
1.8
5.0 4.9 0 0 0 0
4.5 0
0 0
11.7
0
13.4
to FUNCTION (4)
B3
2200P
330
C840
PS
VEE3
VIN3
VEE2
VIN2
VEE1
VIN1
GND
VOUT3
V+3
VOUT2
V+2
VOUT1
V+1
NJM2581M
10/63
Note : IC821 LA7104M for P.W.B. A to D version.
NJM2581M for P.W.B. E or later version.
C841
10/63
C842
10/63