Service manual

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IJKLMNO
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86
RX-V757/DSP-AX757/DSP-AX757SE
RX-V657/HTR-5860
* All voltages are measured with a 10M Ω /V DC electronic volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to
those originally installed.
* Schematic diagram is subject to change without notice.
■ SCHEMATIC DIAGRAM (DSP 2/2)
* 電圧は、内部抵抗10MΩの電圧計で測定したものです。
* Z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。
CODEC
DAC
SELECTOR
REGULATOR
MIC IN
SW
SL
PL
SBL
SW
C
L
ANALOG IN
ANALOG IN
ANALOG IN
A/D IN
FL/FR
C/SW
SL/SR
PL/PR
SBL/SBR
DIGITAL IN
SL
C
PL
SW
SBL
3.4
3.4
2.8
0
0
0
0
4.3
0
0
0.7
11.7
0
11.9
0.1
11.8
-11.9
00
1.7
-11.9
00
1.8
0
3.5
1.8
1.8
1.8
1.8
1.8
1.4
0.1
3.5
1.4
0
0
0
5.0
1.4
1.8
3.5
4.9
3.5
0.4
1.8
1.8
0
2.4
2.3
2.4
2.4
9.2 5.1
9.2
5.1
0
5.1
0
11.5
-12.0
0.1
0
1.4
1.4
1.4
1.4
0
0
0
0
0
0
11.9
5.0
2.5
2.5
0
5.0
2.5
2.5
0
-12.0
0
0
0
0
0
0
11.9
-12.0
0
0
0
0
0
0
11.9
-12.0
0
0
0
0
0
0
11.9
-12.0
0.1
1.3
0
0
0.8
1.4
1.8
1.8
0
0
0
0 0
2.5 2.5
0
3.5
0
5.0 3.5
0
0.1
0 5.0
5.0
2.5 1.8 0
4.9
3.5 0.4
0
2.5
2.5
2.5
2.5
2.5
2.5
0
2.5
2.5
00
Page 87 D-8
TO FUNCTION (1) W303
Page 87 E-2
TO FUNCTION (1) CB305
RX-V757/DSP-AX757/DSP-AX757SE/RX-V657 Page 88 F-8
HTR-5860 Page 89 F-8
TO OPERATION (4) W807
TO OPERATION (5) W807
IC15 : AK4382AVT
D/A Convertter
DE-EMPHASIS
CONTROL
8X
INTERPOLATOR
∆ ∑
MODULATOR
SCF
SCF
CLOCK
DIVIDER
8X
INTERPOLATOR
∆ ∑
MODULATOR
AUDIO
DATA
INTERFACE
µP
INTERFACE
12
15
16
13
14
6
7
8
4
2
3
5
1
11
10
9
CSN
VDD
VSS
DZFL
DZFR
AOUTL+
AOUTL–
AOUTR+
AOUTR–
CCLK
CDTI
PDN
MCLK
LRCK
BICK
SDTI
IC16 : AK4628VQ
192kHz 24bit 8ch CODEC
1
2
3
4
5
6
7
8
9
10
11
SDOS
I2C
SMUTE
BICK
LRCK
SDTI1
SDTI2
SDTI3
SDTO
D AUX
DFS
12 13 14 15 16 17 18 19 20 21 22
SDTI4
DZFE
TVDD
DVDD
DVSS
PDN
TST1
CAD1 CAD0
LOUT4
ROUT4
33
32
31
30
29
28
27
26
25
24
23
DZF2/OVF
RIN
LIN
NC
TST2
ROUT1
LOUT1
ROUT2
LOUT2
ROUT3
LOUT3
44 43 42 41 40 39 38 37 36 35 34
TDM0 LOOP0/SDA/CDTI DIF1/SCL/CCLK DIF0/CSN P/S MCLK DZF1 AVSS AVDD VREFH VCOM
DATT
LPF DAC
L OUT1
HPFADC
L IN
MCLK
LRCK
BICK
DAUX
SDOS
SDTO
SDTI1
SDTI2
SDTI3
SDTI4
FORMAT
CONVERTER
HPFADC
R IN
DATT
LPF DAC
R OUT1
DATT
LPF DAC
L OUT2
DATT
LPF DAC
R OUT2
DATT
LPF DAC
L OUT4
DATT
LPF DAC
DATT
LPF DAC
L OUT3
DATT
LPF DAC
R OUT4
R OUT3
AUDIO
I/F
MCLK
LRCK
BICK
SDOUT
SDIN1
SDIN2
SDIN3
SDIN4
IC17–21 : NE5532DR
Dual OP-Amp
–+
OUT 1
–IN 1
–V CC
+V CC
OUT 2
1
2
3
4
5
+IN 1 –IN 2
+IN 2
– +
6
7
8
G4A4B4Y3A3B
1A 1B 1Y 2A 2B 2Y
3YS
15
STROBE
2
1A
14
4A
13
4B
12
4Y
11
3A
10
3B
9
3Y
1
SELECT
3
1B
4
1Y
5
2A
6
2B
7
2Y
8
16
VCC
GND
INPUTS
OUTPUT
OUTPUT
INPUTS
INPUTS
OUTPUT
OUTPUT
INPUTS
IC14 : SN74LV157APWR
2 to 1 Data Selectors
INPUTS
X
L
H
H
L
L
L
A
B
SELECT
STROBE
G
OUTPUT
Y