A
1
2
3
4
5
6
7
8
9
10
B
C
D
E
F
G
H
I
J
K
L
M
N
77
RX-V550/HTR-5750/RX-V450/HTR-5740/DSP-AX450
SCHEMATIC DIAGRAM (FUNCTION 2/2)
RX-V550
★
All voltages are measured with a 10M
Ω
/V DC electronic 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.
★ 電圧は、内部抵抗10MΩの電圧計で測定したものです。
★
s
印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、パーツリス
トに記載されている部品を使用してください。
★ 本回路図は標準回路図です。改良のため予告なく変更することがございます。
GND
VOUT
VIN
3
2
VREF
IC501: NJU7201L55
Voltage Regulator
1
Point
1 Pin 13 of IC502
IC503: 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
IC603, 606, 701: 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
IC607, 608: 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
IC609: TC74HCU04AF
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
IC702: NJM2581M
Video Amp
13
VOUT1
11
VOUT2
9
VOUT3
8
GND
10
V+3
14
V+1
12
V+2
2
NEE1
4
VEE2
6
VEE3
7
PowerSave
5
VIN3
1
VIN1
3
VIN2
75
Ω
Driver
6dB
AMP
BIAS
75
Ω
Driver
6dB
AMP
BIAS
75
Ω
Driver
6dB
AMP
BIAS
REF
IC601, 602, 901: 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
Point
2 Cathode of D501 and Pin 12 of IC502
POWER ON
(Connect the power cable)
POWER OFF
(Disconnect the power cable)
A D501
B IC502
1
2
B
A
4.9
4.9
3.9
4.0
4.0
4.0
7.5
4.1
4.1
0
0
4.0
4.9
4.9
5.9
5.9
0.3
0
0
0.1
11.5
3.9
3.9
4.9
5.5
0.5
11.2
0
0
4.9
4.9
4.9
4.9
11.2
11.2
11.5
11.5
5.9
5.9
5.9
5.9
6.5
6.5
6.9
6.9
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
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
4.2
4.2
4.2
1.5
1.1
1.9
5.0
5.7
5.6
5.6
5.6
5.6
4.1
4.8
4.8
4.9
4.9
4.8
4.8
4.7
4.7
4.7
4.7
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
-11.6
-11.6
-11.6
4.8
4.1
4.8
4.8
4.8
4.8
4.8
4.7
4.1
0.1
0.1
0.1
0.1
0.1
0.1
0.5
0.5
0
0
0.1
0
0.1
0.1
0.1
0.1
0.1
0.1
0.1
4.7
4.9
4.8
4.8
4.8
4.8
4.7
4.7
4.8
4.8
4.8
4.9
4.9
4.9
4.9
1.5
1.5
4.8
4.8
4.8
2.5
2.4
0
4.8
0
0
0.1
0.1
0
0
4.8
4.8
0.1
0.1
4.9
4.9
4.9
4.9
4.9
4.9
5.0
0
5.1
0.1
0.1
3.7
2.7
0.4
1.5
4.8
4.8
1.2
0
0.9
4.8
4.8
4.8
2.9
0.1
0.4
1.5
5.1
4.9
0
0
0
0
10.0
11.8
1.1
0.1
0.4
-0.5
-0.5
-0.5
-0.4
-0.4
0.4
0
0
0
0
3.6
2.6
2.7
2.7
2.7
4.9
4.9
4.9
4.9
4.9
4.5
-4.9
4.9
0
0.2
0
5.2
5.2
4.9
4.9
-4.9
-4.9
0.3
0.3
-0.3
0.4
0.4
0.4
1.0
-0.6
0.1
0.1
0.1
0.1
0.1
0.1
0.1
-0.4
4.9
4.9
4.9
4.9
4.9
4.9
4.5
4.5
4.5
-1.1
-0.4
-0.6
4.9
5.5
5.5
6.6
0.1
0
6.1
6.4
7.1
4.9
4.9
4.9
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4.9
-4.9
-4.9
-4.9
-4.9
-4.9
4.8
4.9
0.7
0
MICRO COMPUTER
Y/C MIX
Y/C SEPARATION
S-SIGNAL DETECT
Y-INPUT
SELECTOR
C-INPUT
SELECTOR
INPUT
SELECTOR
Y/Cb/Cr
SELECTOR
x: NOT USED
O: USED / APPLICABLE
x: NOT USED
O: USED / APPLICABLE
x: NOT USED
O: USED / APPLICABLE
Page 76
to FUNCTION (1)
F2
P
age 82
to MAIN (2)
H10
P
age 82
to MAIN (1)
F1
Page 80
to OPERATION (1)
E8
Page 75
to DSP
G1
U, C, A models only
