A
1
2
3
4
5
6
7
8
9
10
B
C
D
E
F
G
H
I
J
K
L
M
N
93
RX-V557/HTR-5850/DSP-AX557/RX-V457/HTR-5840/DSP-AX457
SCHEMATIC DIAGRAM (XM)
★
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/HTR-5850
RX-V457/HTR-5840
(U, C models)
0
0
3.3
1.3
0
3.4
1.3
3.3
3.4
0
0
0
0
0
3.4
3.4
3.4
0
2.7
3.4
5.0
5.0
4.6
4.6
0
2.1
2.2
2.1
0
0
0
3.4
0
0.2
3.4
3.4
5.1
5.1
0
5.1
12.4
12.4
0
12.4
0
5.5
5.5
0.2
0.2
12.4
0
3.4
2.7
1.7
1.7
1.7
0
0
3.4
0
1.3
1.7
3.4
1.7
0
0
0
3.4
0
0
0
2.1
2.1
0
0
0
3.4
3.4
0
2.2
B-2
AC 10.3
Point:
B-2 Pin 26 of IC1
Y
4
B
2
GND
3
IC23:
SN74AHCT1G32DCKR
2-Input or Gate
Vcc
5
A
1
1
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
Vcc
OE
B1
B2
B3
B4
B5
B6
B7
B8
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
IC24: SN74LV245APWR
Octal Bus Transceiver with 3-state Outputs
IC21:
µ
PC29M33T-E1
Voltage Regulator
3
OUTPUT
1
INPUT
2
GND
Safety Drive
Limiter
Excessive Electric
Current Protection
Sudden Current
Protection
Starter Circuit
Driver
Standard Voltage
Overheat Protection
Amp.
IC22: NJM7805FA
Voltage Regulator
INPUT
OUTPUT
COMMON
IC27: PQ05RD11
Voltage Regulator
1
Vin
2
Vo
4
Vc
3
GND
Control circuit
Audio
Data
Interface
µ
P
Interface
SMUTE/CSN
De-emphasis
Control
Clock
Divider
MCLK
ACKS/CCLK
8X
Interpolator
Modulator
Modulator
SCF
SCF
8X
Interpolator
DIF0/CDTI
DZFL
VDD
VSS
AOUTL
P/S
AOUTR
6
PDN
5
1
7
8
LRCK
BICK
SDTI
4
2
3
10
9
11
12
13
14
VCOM
DZFR
15
12
IC25: AK4384ET
D/A Converter
ATT
ATT
1
2
3
4
8
7
6
5
1OUT
1IN–
1IN+
VCC–
VCC+
2OUT
2IN–
2IN+
OUT
VCC–
VCC+
36 pF
37 pF
14 pF
7 pF
15
460
15
IN+
IN–
IC26: NE5532DR
DUAL LOW-NOISE OPERATIONAL AMPLIFIERS
to SUBTR (2)
HTR-5850: Page 89
G8
RX-V457/HTR-5840: Page 90
G8
RX-V557: Page 88
G8
to POWER
TRANSFORMER
to FUNCTION
Page 83
D8
XM
RX-V557 model only
5
4
3
1
2
XMDT
2CH DAC
no_use
0.01/50
47/16
BLM21P600SG
1
47/16
3.3K
3.3K
2.2K
10/16
10/16
1K
1K
1
1
NE5532DR
NE5532DR
2.2K
47/16
0.1/16
10/16
10K
10K
0.1/16
47/16
47/16
0.1/16
3300p/50
3300p/50
47K
47K
