A
1
2
3
4
5
6
7
8
9
10
B
C
D
E
F
G
H
I
J
K
L
M
N
RX-V557/HTR-5850/DSP-AX557/RX-V457/HTR-5840/DSP-AX457
88
SCHEMATIC DIAGRAM (SUBTRANS)
★
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。
RX-V557/DSP-AX557
1
2
Anode
Cathode
4
3
Collctor
Emitter
IC401, 403: TLP421
Photo Transistor
IC402: TC4013BP
Dual D-type Flip Flop
4
RESET1
1
Q1
6
SET1
5
DATA1
CL
3
CLOCK1
CL
CL
CL
CL
CL
2
Q1
10
RESET2
13
Q2
8
SET2
9
DATA2
7
VSS
14
VDD
11
CLOCK2
12
Q2
CL
CL
CL
CL
CL
CL
GND
VOUT
VIN
3
2
VREF
IC452: NJU7201L55
Voltage Regulator
1
IC453: LC72722PM
RDS Signal Processor
REFERENCE
VOLTAGE
57 kHz
bpf
(SCF)
CCB
TEST
PLL
(57 kHz)
ANTIALIASING
FILTER
SMOOTHING
FILTER
RAM
(24 BLOCK DATA)
ERROR CORRECTION
(SOFT DECISION)
SYNC / EC
CONTROLLER
SYNC
DETECT-1
DATA
DECODER
CLOCK
RECOVERY
(1187.5 Hz)
MEMORY
CONTROL
OSC/DIVIDER
VREF
CLK (4.332 MHz)
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
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
VIDEO SWITCH
4 INPUT 1 OUTPUT
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: 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
IC603, 606: TC74HC4053AF
Analog Multiplexer/Demultiplexer
16
VCC
6
INHIBIT
11
15
14
9
A
C
B
8
GND
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
2
1
B-1
C-1 C-2
1 D453
Point:
B-1 Pin 13 of IC451
Point:
C-1 Cathode of D453 and Pin 12 of IC451
Point:
C-2 Cathode of D453 and Pin 12 of IC451
POWER ON
(Connect the power cable)
POWER ON
(Connect the power cable)
POWER OFF
(Disconnect the power cable)
2 IC451
1 D453
2 IC451
AC69.0
AC6.3
5.0
0
0
0
0
0
0
0
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
0
0
-0.2
0.1
10.3
1.1
1.3
10.3
0
4.8
4.8
4.8
6,2
0.1
0
0.8
0.1
0
3.9
3.9
11.3
3.9
0
3.9
0
4.8
5.6
11.3
4.9
5.5
11.3
6.6
7.3
6.1
0
6.6
0
5.6
5.6
3.9
3.9
11.3
3.9
0
3.9
0
4.8
6.1
3.9
3.9
11.3
3.9
0
3.9
0
4.8
6.0
11.6
5.4
6.0
6.5
0
7.1
0
6.1
6.0
11.6
5.3
6.0
6.5
0
7.0
0
6.0
6.0
5.0
5.0
0.5
0.5
0.1
0
-4.9
0
-0.6
0
5.0
-0.6
0
0
0
1.1
1.1
0.6
0.6
0
0.2
-0.6
0
5.0
0.4
0.2
5.0
0.2
0.9
5.0
0.5
0
0
0
0
0
0
5.0
0
-4.9
-0.6
-0.2
-0.2
5.0
0
0
0
5.0
4.5
4.5
0
0
-4.9
0
0
0
0
0
0
0.3
0
0
0
0
0
5.0
0
0
0
0
5.0
4.5
0
0
0
2.2
2.9
2.7
2.7
2.6
5.0
0
0.5
0.2
0.2
0.5
-4.9
0
5.0
1.3
1.7
-0.6
-0.6
0.6
4.3
4.3
5.0
0.9
0.9
-0.5
-0.5
0
0
0
0
5.6
5.0
11.9
5.6
4.8
-11.9
4.8
4.8
-11.9
4.8
4.8
-11.9
4.8
4.8
4.7
4.1
10.1
5.5
0
5.5
5.5
5.0
4.8
4.8
4.8
0.1
0.1
0
0
4.8
4.8
0
2.1
0.4
0
4.8
0
4.8
4.8
4.7
4.7
0.2
0.2
0
4.7
2.1
0.4
4.8
1.0
4.8
4.7
0
0.5
4.8
4.8
4.8
4.7
4.8
4.3
4.8
0.6
0
4.8
0
0
0
5.0
4.8
2.3
0
2.3
4.8
4.8
5.0
5.0
0
4.8
4.8
4.8
4.8
4.8
0
0
0
5.0
4.8
0
0
0
4.8
0
4.9
5.0
4.9
4.8
4.8
4.7
4.8
0
4.8
4.9
0
0
0
4.8
0
4.8
0
0
0
0
4.8
0
0
0
0
0
0
4.8
0
4.8
4.8
0
0
4.8
4.8
0
4.7
4.8
4.8
0
0
0
0
to CONVERSION
Page 91
C1
to FUNCTION
Page 83
D1
to DSP
Page 83
J1
to OPERATION (1)
Page 86
D7
to CONVERSION
P
age 91
D8
to FUNCTION
P
age 83
D8
to XM
P
age 93
J3
to MAIN (1)
P
age 86
E1
to MAIN (2)
to TUNER
P
age 86
G8
to MAIN (2)
P
age 86
F8
to SUBTR (5)
to POWER CABLE
D2
to SUBTR (1)
C1
to SUBTR (2)
H9
to SUBTR (8)
D4
to SUBTR (10)
F9
to SUBTR (7)
E5
to SUBTR (3)
E9
to SUBTR (9)
F8
to SUBTR (2)
I3
to SUBTR (3)
D5
to SUBTR (6)
C4
to SUBTR (2)
J3
to POWER TRANSFORMER
to POWER TRANSFORMER
R, L models :
SUBTR (3)
SUBTR (10)
SUBTR (9)
SUBTR (2)
SUBTR (5)
SUBTR (7)
SUBTR (1)
SUBTR (8)
SUBTR (6)
MICRO COMPUTER
INPUT
SELECTOR
Y/C MIX
SELECTOR
SELECTOR
INPUT
SELECTOR
220K