How it Works
Yamaha
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RX-V457
Schematic
14 pgs9.5 Mb0
User Manual
44 pgs3.11 Mb0
Service manual
131 pgs31.23 Mb0
User Manual [nl]
76 pgs1.04 Mb0
User Manual
88 pgs1.68 Mb0
User Manual [de]
76 pgs1.03 Mb0
User Manual [ru]
76 pgs1.16 Mb0
Owners Manual
441 pgs6.6 Mb0
User Manual [no]
76 pgs1.02 Mb0
User Manual [fr]
76 pgs1.04 Mb0
User Manual
76 pgs1.01 Mb0
Service Manual
70 pgs13.42 Mb0

Yamaha RX-V457, RX-V557, HTR-5880, DSP-AX457, DSP-AX557 Schematic

A
BCDEFGH I JK
RX-V557/HTR-5850/DSP-AX557/RX-V457/HTR-5840/DSP-AX457
L MN
SCHEMATIC DIAGRAM (SUBTRANS)
1
to POWER CABLE
RX-V557/DSP-AX557
to POWER TRANSFORMER
R, L models :
D2
to SUBTR (5)
0.1
6,2
5.0
2
0
F8
to MAIN (2)
Page 86
0
0.8
0.1
4.8
0
0
0
4.8
4.8
0
0
~
~
0
0
~
~~
~
0
~
~
220K
~
~
~
~
~
~
~
~
~
~
~
0
~
~
~
~
~
~
~
~
~
~
1.1 1.3 10.3
0.1 10.3
-0.2
~~
AC69.0
0
AC6.3
C1
to SUBTR (1)
SUBTR (5)
to POWER TRANSFORMER
SUBTR (7)
3
SUBTR (1)
Page 91
J3
INPUT
SUBTR (6)
4
SELECTOR
3.9
3.9
3.903.904.8
11.3
to SUBTR (2)
5.6
to CONVERSION
C1
D5
to SUBTR (3)
C4
to SUBTR (6)
Page 83 D1
to FUNCTION
to SUBTR (2)
H9
11.3
5.5
5.65.6
4.9
5
6.1
6.6
0
0
11.3
7.3
6.6
to SUBTR (2)
I3
SUBTR (8)
to SUBTR (9)
F8
to TUNER
5.0 11.9
5.6
5.6
0
-11.9
-11.9
-11.9
4.7
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.1
IC401, 403: TLP421 Photo Transistor
Anode
1
Cathode
2
IC402: TC4013BP Dual D-type Flip Flop
RESET1
4
SET1
6
DATA1
5
CL
CLOCK1
3
RESET2
10
SET2
8
DATA2
9
CL
CLOCK2
11
VSS
7
VDD
14
43Collctor
Emitter
Q1
1
Q1
CL
CL
CL
2
CL
CL
Q2
13
Q2
CL
CL
CL
12
CL
CL
6
7
8
9
10
88
3.9
3.9
INPUT
SELECTOR
3.9
3.9
11.6
6.0
5.4
11.6
6.0
5.3
5.0
-0.6
5.0
0
-0.6
SELECTOR
IC452: NJU7201L55 Voltage Regulator
VREF
3.9
0
4.8
6.1
0
3.9
11.3
3.9
0
4.8
6.0
0
3.9
11.3
6.16.0
6.5
7.1
0
0
6.06.0
6.5
7.0
0
0
0
00
0
5.0
0.5
0.5
0.1
0
0
-4.9
0 1.1 1.1
0
1
GND
0
004.804.9
0
SELECTOR
5.0
0
00
0
0
5.0
2.2 2.9
00
0
0
5.0
-0.2
-0.6
-0.2
0.6
0.6
-4.9
0
0
0.3
0
-4.9
0
0
5.0
Y/C MIX
5.0
-0.6
0.2
0
0
0.5
2.7 2.7 2.6
0
0
5.0
0.2 0.2
0.5
5.0 4.5
0
00
5.0
0.2
0.4
4.5
4.5
0
0
0
0
-4.9
5.0
4.3
0.9
0.9
4.3
1.3
0.5 0
5.0
0.9
0.2
0
0.6
-0.5
-0.5 0
1.7
-0.6
-0.6
0
to SUBTR (7)
to FUNCTION
E5
Page 83 D8
SUBTR (9)
0
0
0
0
0
5.0
0
to MAIN (2)
Page 86 G8
to MAIN (1)
Page 86 E1
J3
to XM
Page 93
10.1 5.5 0
4.8
5.0
5.5
1
4.8
5.5
2.1
4.8 4.8
0.1
0.100
C-1 C-2
0
0.4
4.8
D8
to SUBTR (3)
SUBTR (3)
E9
SUBTR (10)
Page 91
to CONVERSION
D4
to SUBTR (8)
Page 86 D7
to OPERATION (1)
4.8
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
5.0
MICRO COMPUTER
4.3
4.8
0.604.8
Page 83
to DSP
4.8
4.9
4.8
4.8
4.7
0
4.8
4.90004.8
B-1
2
0
0
2.302.3
4.8
0
5.0
4.8
4.8
J1
F9
IC453: LC72722PM RDS Signal Processor
to SUBTR (10)
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
32
VOUTVIN
3
VDDA
VSSA
MPX IN
DO
CL
DI
CE
T1 T2 T3 T4
REFERENCE
VOLTAGE
4
ANTIALIASING
2
20 21 22 23
7 8 9
10
FILTER
VREF
1 5 6
57 kHz
bpf
(SCF)
(24 BLOCK DATA)
CCB
MEMORY
TEST
CONTROL
RAM
FL OUT
VREF
SMOOTHING
FILTER
ERROR CORRECTION
(SOFT DECISION)
C IN
(57 kHz)
CLK (4.332 MHz)
OSC/DIVIDER
PLL
SYNC / EC
CONTROLLER
SYNC
DETECT-1
CLOCK
RECOVERY
(1187.5 Hz)
DATA
DECODER
SYNC
DETECT-2
14
15
19
18
24
VDDD
VSSD
RDS-ID
SYNC
SYR
IC601, 602, 901: LA7956 Video Switch
6dB
AMP
DRIVER
123456789
VIDEO
OUT
CONTROL
A B VIN1 GND VIN2 VCC VIN3 VIN4
VIDEO SWITCH
4 INPUT 1 OUTPUT
1 D453
2 IC451
(Connect the power cable)
POWER ON
POWER OFF (Disconnect the power cable)
0
4.8
0
0
004.800
4.8
0
4.8
5.0
5.0
4.8
4.8
4.8
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
0
5.0
4.8
0
0
IC607, 608: TK15420M Video Amp
1
OUT A
–IN A
+IN A
VEE
2
–+
3
4
8
7
– +
6
5
IC609: TC74HCU04AFEL Hex Inverters
1
1A
2
1Y
3
2A 6Y
4
2Y
5
3A
6
3Y
GND
7
14
13
12
11
10
9
VCC
OUT B
–IN B
+IN B
VCC
6A
5A
5Y
4A
4Y8
IC603, 606: TC74HC4053AF Analog Multiplexer/Demultiplexer
VCC
GND
VEE
INHIBIT
16
6
11
A
10
B
9
C
8
7
12
0X
13
1X
2
0Y
1
1Y
5
0Z
3
1Z
LEVEL
CONVERTER
BINARY TO 1-OF-8
DECODER WITH INHIBIT
SW
SW
SW
SW
14
X-COM
15
Y-COM
SW
4
SW
Z-COM
SUBTR (2)
1 D453
2 IC451
POWER ON
(Connect the power cable)
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。
11 16 17 13 12
T5T6T7
X IN
X OUT
★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。
A
BCDEFGH I JK
L MN
SCHEMATIC DIAGRAM (SUBTRANS)89HTR-5850
RX-V557/HTR-5850/DSP-AX557/RX-V457/HTR-5840/DSP-AX457
1
to POWER CABLE to POWER TRANSFORMER
0.1
6,2
5.0
2
0
F8
to MAIN (2)
Page 86
0
0.8
0.1
4.8
0
0
0
4.8
4.8
0
0
~
~
0
0
~
~~
~
0
~
~
220K
~
~
~
~
~
~
~
~
0
~
~
~
~
~
~
~
~
~
~
1.1 1.3 10.3
0.1 10.3
-0.2
~~
AC69.0
0
AC6.3
SUBTR (7)
3
SUBTR (1)
Page 91
J3
5.6
to SUBTR (2)
D8
INPUT
SUBTR (6)
4
SELECTOR
3.9
3.9
3.903.904.8
11.3
to CONVERSION
C1
D5
to SUBTR (3)
C4
to SUBTR (6)
to SUBTR (7)
to FUNCTION
E5
11.3
5.5
5.65.6
4.9
5
6.1
6.6
0
0
11.3
7.3
6.6
SUBTR (9)
I3
3.9
0
4.8
6.1
6
0
3.9
3.9
3.9
11.3
INPUT
0
SELECTOR
3.9
0
4.8
6.0
0
3.9
3.9
3.9
11.3
11.6
6.0
6.16.0
5.4
7
11.6
5.3
8
5.0
0
-0.6
SELECTOR
6.5
7.1
0
0
6.0
6.06.0
6.5
7.0
0
0
5.0
00
-0.6
0
0
5.0
0.5
0.5
0
-4.9
0 1.1 1.1
0
5.0
-0.2
-0.6
0.1
0
-0.2
0.6
0.6
-4.9
00
0
0
0
5.0
2.2 2.9
00
0
0
Page 83
to SUBTR (2)
5.0
0
0
0
0.5
0.3
0
-4.9
2.7 2.7 2.6
0
0
5.0
Y/C MIX
5.0
0
-0.6
0.2
0
5.0
0.2 0.2
0.5
5.0 4.5
0
00
5.0
0.2
0.4
C4
SELECTOR
4.5
4.5
0
0
0
-4.9
0.5 0
5.0
0.9
0.2
to SUBTR (9)
5.5
5.5
5.0 11.9
5.6
5.6
0
4.8
5.0
1
4.8
0
2.1
4.8 4.8
0.1
0.100
0
004.804.9
0
4.8
4.8
4.8
4.7
4.7
0.2
0
0.4
4.8
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
5.0
MICRO COMPUTER
4.3
4.8
0.604.8
4.8
4.9
4.8
4.8
4.7
0
4.8
4.90004.8
B-1
2
0
0
2.302.3
0
5.0
4.8
4.8
to TUNER
to MAIN (2)
5.0
4.3
0.9
0.9
4.3
1.3 0
0.6
-0.5
1.7
-0.5 0
-0.6
-0.6
0
Page 86 G8
to MAIN (1)
Page 86 E1
10.1 5.5 0
J3
to XM
Page 85
C-1 C-2
0
0
0
0
0
5.0
0
D8
to SUBTR (3)
4.8
5.0
Page 83 D1
to FUNCTION
0
4.8
0
0
4.8
0
4.8
5.0
4.8
004.800
0
4.8 0
0
4.8
SUBTR (2)
IC401, 403: TLP421 Photo Transistor
Anode
1
Cathode
2
IC402: TC4013BP Dual D-type Flip Flop
RESET1
4
SET1
6
DATA1
5
CL
CLOCK1
3
RESET2
10
SET2
8
DATA2
9
-11.9
-11.9
-11.9
4.7
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.1
0
CL
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
5.0
4.8
CLOCK2
11
VSS
7
VDD
14
IC607, 608: TK15420M Video Amp
1
OUT A
2
–IN A
+IN A
VEE
–+
3
4
– +
IC609: TC74HCU04AFEL Hex Inverters
1
1A
2
1Y
3
2A 6Y
4
2Y
5
3A
6
3Y
GND
7
43Collctor
Emitter
Q1
1
Q1
CL
CL
CL
2
CL
CL
Q2
13
Q2
CL
CL
CL
12
CL
CL
VCC
8
7
OUT B
–IN B
6
5
+IN B
VCC
14
6A
13
12
11
5A
5Y
10
4A
9
4Y8
9
10
IC452: NJU7201L55 Voltage Regulator
IC601, 602, 901: LA7956 Video Switch
DRIVER
123456789
VIDEO
OUT
VREF
1
GND
32
VOUTVIN
★ All voltages are measured with a 10MΩ/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.
to SUBTR (10)
6dB
AMP
CONTROL
A B VIN1 GND VIN2 VCC VIN3 VIN4
★ 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。
VIDEO SWITCH
4 INPUT 1 OUTPUT
F9
SUBTR (3)
E9
SUBTR (10)
Page 91
to CONVERSION
Page 85 D7
to OPERATION (1)
Page 81
J1
to DSP
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
1 D453
2 IC451
(Connect the power cable)
POWER ON
POWER OFF (Disconnect the power cable)
1 D453
2 IC451
POWER ON
(Connect the power cable)
IC603, 606: TC74HC4053AF Analog Multiplexer/Demultiplexer
VCC
INHIBIT
16
6
11
GND
VEE
A
10
B
9
C
8
7
12
0X
13
1X
2
0Y
1
1Y
5
0Z
3
1Z
LEVEL
CONVERTER
BINARY TO 1-OF-8
DECODER WITH INHIBIT
SW
SW
SW
SW
14
X-COM
15
Y-COM
SW
4
SW
Z-COM
A
BCDEFGH I JK
L MN
RX-V557/HTR-5850/DSP-AX557/RX-V457/HTR-5840/DSP-AX457
SCHEMATIC DIAGRAM (SUBTRANS) RX-V457/HTR-5840/DSP-AX457
1
2
to POWER TRANSFORMER
to POWER CABLE
R, L models :
to SUBTR (5)
D5
0.1
6,2
3
F8
to MAIN (2)
Page 86
5.0
0
0
0.8
0.1
4.8
0
0
0
4.8
4.8
0
0
~
~
0
0
~
~~
~
0
~
~
220K
~
~
~
~
~
~
~
~
~
~
~
0
4
~
~
~
~
~
~
~
~
~
~
1.1 1.3 10.3
0.1 10.3
-0.2
~~
AC69.0
0
AC6.3
Page 92 D2
to VIDEO
(J model)
E6
to SUBTR (4)
(U, C, R, T, K, A, B, G, E, L models)
C7
to SUBTR (3)
C5
to SUBTR (6)
Page 83 D1
to FUNCTION
SUBTR (2)
IC401, 403: TLP421 Photo Transistor
Anode
1
Cathode
2
IC402: TC4013BP
43Collctor
Emitter
Dual D-type Flip Flop
RESET1
4
SET1
6
DATA1
5
CL
CL
CLOCK1
3
CL
CL
RESET2
10
SET2
8
DATA2
9
CL
CL
CLOCK2
VSS
VDD
11
7
14
CL
CL
IC701: TC74HC4053AF Analog Multiplexer/Demultiplexer
VCC
INHIBIT
16
6
11
GND
VEE
A
10
B
9
C
8
7
12
0X
13
1X
2
0Y
1
1Y
5
0Z
3
1Z
LEVEL
CONVERTER
CL
CL
CL
CL
BINARY TO 1-OF-8
DECODER WITH INHIBIT
SW
SW
SW
SW
Q1
1
Q1
2
Q2
13
Q2
12
14
X-COM
15
Y-COM
SW
4
SW
Z-COM
SUBTR (1)
-11.9
4.8
4.8
J3
5.6
3.9
3.9
11.3
to SUBTR (2)
3.9
0
4.8
6.1
0
to SUBTR (7)
F9
I3
to SUBTR (2)
SUBTR (9)
D8
to FUNCTION
Page 83
C2
to SUBTR (1)
SUBTR (5)
to POWER TRANSFORMER
H3
to SUBTR (2)
SUBTR (4)
SUBTR (7)
to TUNER
to MAIN (2)
Page 86 G8
to MAIN (1)
Page 86 E1
5.0 11.9
5.6
5.6
0
4.8
4.8
-11.9
4.8
4.8
-11.9
4.8
4.1
4.7
0
004.804.9
0
4.8
4.8
4.8
0
2.1 0
0.4
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
5.0
MICRO COMPUTER
4.3
4.8
0.604.8
4.8
4.9
4.8
4.8
4.7
0
4.8
4.90004.8
B-1
2
0
0
2.302.3
4.8
0
5.0
4.8
4.8
0
4.8
0
0
004.800
4.8
0
4.8
5.0
5.0
4.8
4.8
4.8
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
0
5.0
4.8
0
0
INPUT
SUBTR (6)
5
6
7
SELECTOR
3.9
3.9
3.903.904.8
11.3
11.3
5.5
5.65.6
4.9
6.1
6.6
0
0
3.9
INPUT
8
9
10
90
SELECTOR
3.9
3.9
11.6
6.0
5.4
11.6
6.0
5.3
IC452: NJU7201L55 Voltage Regulator
VREF
3.9
0
4.8
6.0
0
3.9
11.3
J3
10.1 5.5 0
to XM
6.16.0
6.5
7.1
0
0
6.06.0
6.5
7.0
0
0
SUBTR (3)
[ U, C, R, T, K, A, B, G, E, L models ]
Page 93
4.8
4.8 4.8
5.0
5.5
1
4.8
5.5
Page 85 D7
to OPERATION (1)
0.1
0.100
C-1 C-2
IC702: NJM2581M Video Amp
4.8
Page 81
J1
VIN1
NEE1
VIN2
VEE2
VIN3
VEE3
PowerSave
1
BIAS
2
3
BIAS
4
5
BIAS
6
7
75Ω
6dB AMP
6dB AMP
6dB AMP
REF
Driver
75Ω Driver
75Ω Driver
14
V+1
13
VOUT1
12
V+2
11
VOUT2
10
V+3
9
VOUT3
8
GND
to DSP
C5
IC453: LC72722PM RDS Signal Processor
to SUBTR (9)
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
32
1
GND
VOUTVIN
3
VDDA
VSSA
MPX IN
DO
CL
DI
CE
T1 T2 T3 T4
REFERENCE
VOLTAGE
4
ANTIALIASING
2
20 21 22 23
7 8 9
10
FILTER
11 16 17 13 12
VREF
1 5 6
57 kHz
bpf
(SCF)
(24 BLOCK DATA)
CCB
MEMORY
TEST
CONTROL
T5T6T7
RAM
FL OUT
VREF
SMOOTHING
FILTER
ERROR CORRECTION
(SOFT DECISION)
C IN
(57 kHz)
CLK (4.332 MHz)
OSC/DIVIDER
X IN
X OUT
PLL
SYNC / EC
CONTROLLER
SYNC
DETECT-1
CLOCK
RECOVERY
(1187.5 Hz)
DATA
DECODER
SYNC
DETECT-2
14
15
19
18
24
VDDD
VSSD
RDS-ID
SYNC
SYR
IC601, 602, 901: LA7956 Video Switch
6dB
AMP
DRIVER
123456789
VIDEO
OUT
CONTROL
A B VIN1 GND VIN2 VCC VIN3 VIN4
VIDEO SWITCH
4 INPUT 1 OUTPUT
1 D453
2 IC451
(Connect the power cable)
POWER ON
POWER OFF (Disconnect the power cable)
1 D453
2 IC451
POWER ON
(Connect the power cable)
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。
A
BCDEFGH I JK
RX-V557/HTR-5850/DSP-AX557/RX-V457/HTR-5840/DSP-AX457
SCHEMATIC DIAGRAM (VIDEO) DSP-AX457
L MN
1
(J model)
Page 90
H3
to SUBTR (2)
2
3
4
5
6
7
IC851, 852: TC74HC4053AF Analog Multiplexer/Demultiplexer
VCC
INHIBIT
16
6
11
GND
VEE
A
10
B
9
C
8
7
12
0X
13
1X
2
0Y
1
1Y
5
0Z
3
1Z
LEVEL
CONVERTER
BINARY TO 1- OF-8
DECODER WITH INHIBIT
SW
SW
SW
SW
14
X-COM
15
Y-COM
SW
4
SW
Z-COM
IC853: NJM2581M Video Amp
75Ω
BIAS
BIAS
BIAS
6dB
Driver
AMP
75Ω
6dB
Driver
AMP
75Ω
6dB
Driver
AMP
REF
14
V+1
13
VOUT1
12
V+2
11
VOUT2
10
V+3
9
VOUT3
8
GND
1
VIN1
2
NEE1
3
VIN2
4
VEE2
5
8
J model
VIDEO
VIN3
VEE3
PowerSave
6
7
9
10
92
★ All voltages are measured with a 10MΩ/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。
A
BCDEFGH I JK
L MN
SCHEMATIC DIAGRAM (XM)
RX-V557/HTR-5850 RX-V457/HTR-5840
(U, C models)
1
2
RX-V557/HTR-5850/DSP-AX557/RX-V457/HTR-5840/DSP-AX457
0
3.3
1.303.4
0
1.7
3.4
3
1.7
0
0
0
3.4
0
4
B-2
0
0
2.1
1.3
3.3
XMDT
2.2
0
3.4
2.1
3.4
0
0
0
Point: B-2 Pin 26 of IC1
3.4
1.3
0
2.7
0
3.4
3.4
3.4
3.4
0
3.4
5.0
5
1
4
5.0
2
3
0
4.6
4.6
0
2.1
2.2
2.1
0
0
0
3.4
0
3.4
2.7
1.7
1.7
1.7
0
0
1
RX-V457/HTR-5840: Page 90
RX-V557: Page 88
HTR-5850: Page 89
to SUBTR (2)
G8 G8 G8
0
0
0
BLM21P600SG1
47/16
47/16
0.1/16
0.01/50
5
2CH DAC
no_use
6
12.4
0.20.2
0.2
3.4
3.4
5.1
0
5.1
10/16
5.1
47/16
12.4
0
12.4
10K 10K
3.3K
3.3K
NE5532DR
2.2K
2.2K
NE5532DR
10/16
10/16
1K
47K 47K
1K
12.4
5.5 5.5
3300p/50 3300p/50
0.1/16
0.1/16
47/16 47/16
1
AC 10.3
Page 83
D8
to FUNCTION
RX-V557 model only
IC25: AK4384ET D/A Converter
SMUTE/CSN
ACKS/CCLK
DIF0/CDTI
LRCK
BICK SDTI
P/S
9
De-emphasis
6
7
8
4
2
3
µP
Interface
Audio
Data
Interface
5
PDN
AT T
AT T
Control
8X
Interpolator
8X
Interpolator
MCLK
1
Clock
Divider
Modulator
Modulator
SCF
SCF
14
13
12
15
12
11
10
VDD
VSS
VCOM
DZFR
DZFL
AOUTL
AOUTR
to POWER
0
0
TRANSFORMER
IC26: NE5532DR DUAL LOW-NOISE OPERATIONAL AMPLIFIERS
1
V
15
15
CC+
OUT
V
CC–
IN+
IN–
36 pF
37 pF
14 pF
7 pF
460
XM
7
IC21: µPC29M33T-E1 Voltage Regulator
1
INPUT
Safety Drive
Limiter
Starter Circuit
Amp.
Standard Voltage
8
Overheat Protection
Driver
Sudden Current
Excessive Electric Current Protection
Protection
3
2
OUTPUT
GND
IC22: NJM7805FA Voltage Regulator
INPUT
OUTPUT
COMMON
IC23: SN74AHCT1G32DCKR 2-Input or Gate
Vcc5A1
B2
GND 3
Y4
IC24: SN74LV245APWR Octal Bus Transceiver with 3-state Outputs
DIR
GND
1
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
10
20
19
18
17
16
15
14
13
12
11
Vcc
OE
B1
B2
B3
B4
B5
B6
B7
B8
IC27: PQ05RD11
1OUT
1IN– 1IN+
V
CC–
2
3
4
V
8
CC+
2OUT
7
2IN–
6
2IN+
5
Voltage Regulator
9
10
Vin
1
Control circuit
3
GND
2
Vo
4
Vc
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。
93
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