Yamaha CD-S2000 Service Manual page 44

A B C
CD-S2000
AUDIO
1
12.4
12.4
0.6
CB5 0
2
Page 45 I2
to POWER (1)_CB608
0
0.6
-12.4
-12.4
3
To Module board
4
CB1
5
Page 41 B6
6
to DIGITAL (1)_CB303
CB2
7
12.5
12.5
0.6
0
0
CB6
Page 45 I4
8 to POWER (1)_CB609
0
-0.6
-0.6
-12.4
-12.4
9
10
# All voltages are measured with a 10MΩ/V DC electronic voltmeter.
# 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.
44
D E F
12.5 5.1
IC11
12.5
5.1 3.3
6.3
6.3 0
6.3
0
0
CD IN
1.3
1.7
1.5
0
3.3
3.3
3.3
3.3
3.3
IC12
1 1.3 5.1
1.3
3.3
3
2 1.3
D/A
IC12
4 1.6
CONVERTER
1.5
6
5 1.6
IC12
1.7
9
1.7
8
10 1.7
0 3.3
IC12
12 1.7
1.7 0
11
13
1.7 1.7 1.3
0 1.5 0
1.7 1.3
0 1.7
3.3
1.7 0
IC13
1 0
0 0 1.7
3
2 0
IC13
4 0
0
6
5
0
IC13
9 0 0
8
10 0
PCM/DSD
IC13
12 0 SELECTOR
11
13 0
0
0
1.7
1.3
1.7
1.5
0
3.2
3.3
3.3
3.3
3.3 5.1
D/A
CONVERTER
5.2
12.5
IC3
12.5
6.3
5.2 3.3
6.3
0 12.4
6.3
6.3
12.4
12.4
-12.2
0
0
G H I
0 12.5
-0.9
4.8
IC19 12.5
0
0
IC14
-0.9
5.1
0
0
0
-4.8
IC19
0 0
-12.4
0
5.1
2.4
2.4
0
0
0
0
0
12.5
-0.8
-4.7
IC20
0 0
IC14
-0.9
-12.4
0
-4.7
IC20
0
-12.4
I/V
CONVERTER
0
12.5
-0.9
-4.8
12.5
IC21
0 0
IC16
-0.9
5.1
0
0
-4.8
IC21
0
0
-12.5
0
0
5.1
2.4
2.4
0
0
0
0
12.5
0
-0.9
-4.8
IC22
0
IC16 0
-0.9
-12.4
0
-4.8
IC22
0
-12.4
DIFFERENTIAL
AMP
UU26847
470/50
WN44060
470/50
WN44880
1P10K
J K L
OUT L
0
12.5
0
0
IC15
0
0 IC15
-12.4 0
-12.3 0 -12.3 0
0 0
0
-12.3
0.1
0
OUT +
0
0 IC18
0
-12.3 0 -12.3 0
0 0
0.1
-12.3
0
OUT -
0
IC18
0 0
-12.3 0
-12.3 0
0 0
-12.3
0.1
0
BUFFER
AMP
12.5
0
0
IC17
0
IC17
0 0 0
-12.4
-12.2 -12.2 0
0
0
0
-12.2
0.1
0
0
IC5
0 0
-12.4
-12.2 0
-12.2
0
0 0
-12.2
0.1
0
0
IC5
0
0 0
0
-12.2
-12.2
0
0
-12.2
0.1
0
IC1, 4: PCM1792ADBR
Audio stereo digital-to-analog converter
LRCK
Audio
BCK
UU26747 UU26847 Data Input
DATA I/F
47/50 470/50
RST
UU26847 WN44060 MDO
470/50 470/50
MDI
MC
MS
Function
Control
I/F
HL00710 WN44880
MSEL
1/2P10K 1P10K
ZEROL
Zero
ZEROR Detect
M N
ANALOG OUT L
IC10: TC74VHC157F
Quad 2-channel multiplexer
BALANCED OUT L
SELECT 1 16 Vcc
1A 2 A S G 15 ST
Inputs
1B 3 B A 14 4A Output
ST SELECT A B
1Y 4 Y B 13 4B
H X X X L
2A 5 A Y 12 4Y
L L L X L
2B 6 11 3A
B A L L H X H
L H X L L
2Y 7 Y Y B 10 3B
L H X H H
GND 8 9 3Y
X: Don't care
IC12, 13: TC74VHC08F
Quad 2-input AND gate
1A 1 14 Vcc
1B 2 13 4B
1Y 3 12 4A
2A 4 11 4Y
2B 5 10 3B A B Y
ANALOG OUT R L L L
2Y 6 9 3A
L H L
GND 7 8 3Y H L L
H H H
IC19-22: OP275GSR
Dual bipolar/JFET, audio operational amplifier
OUT A 1 8 V+
-IN A 2 7 OUT B
+IN A 3 6 -IN B
V- 4 5 +IN B
BALANCED OUT R
IC5, 14-22: NE5532DR
Dual low-noise operational amplifiers
VCC+
36 pF
IN+
37 pF
14 pF
15 Ω
OUT
7 pF
IN
15 Ω
460 Ω
VCC–
V
1OUT 1 8 CC+
2OUT
1IN– 2 7
1IN+ 3 6 2IN–
V 4 5 2IN+
CC–
ZEROL 1 28 VCC2L
I OUTL-
ZEROR 2 27 AGND3L
MSEL 3 26 IOUTL-
Current
VOUTL LRCK 4 25 IOUTL+
Segment
DATA 5 24 AGND2
DAC
BCK 23 VCC1
6
I OUTL+
SCK 7 22 VCOML
DGND 8 21 VCOMR
VDD IREF
I/V and Filter 9 20
x8
V L MS 10 19 AGND1
Oversampling COM
Advanced MDI 11 18 IOUTR-
Digital Bias
I REF IOUTR+
Segment MC 12 17
Filter and
DAC MDO 13 16 AGND3R
and Vref V COM R
Modulator 14 15 VCC2R
Function RST
Control
I OUTR-
Current
VOUTR
Segment
DAC
I OUTR+
I/V and Filter
System
Clock
Power Supply
Manager