Dac Board (Supply) Pcb Schematic (Issue 7) - Cambridge Audio Azur 640C V2 Service Manual

+21V UNREG
+5V IR
U17
7805
1 3
VI VO
C110
10uF 25V
C111
100N 50V
DIG.GND
+5V IR
36 kHz
U14
D8
IR RECEIVER
R76
47R
CA IR DEMODULATOR
C106
C105
10uF 16V
100N 50V X7R
DIG.GND
CN9
R81
2
1
100R
MUTE
C112
IR FROM FRONT PANEL
100N 50V X7R
C116
DIG.GND
100N 50V X7R
U15
R75
IR IN
DIG.GND
1 1
2
220R
CN8:A
2
AV2-8,4-14/EC
3
NC
OP4N25
+5V IR +5V IR
+21V UNREG +21V UNREG
VA1
LK30
LK5
LK9
LK300TH
LINK12.5MM
LK39 LK300TH
LK12
LK40OTH
LK300TH
LK32
LK16
LK300TH
LK300TH
LK66 LK17
LK600TH
LK400TH LK21
LK300TH
LK22
LK300TH
LK3 LK35
LK26
LK200TH LK200TH
LK56
LK200TH
LK4 LK31
LK300TH
LK52
LK300TH LK300TH
LK200TH
LK57
-21V UNREG -21V UNREG
LK40OTH DIG.GND
LK60
LK300TH
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Cambridge Audio Azur 640C V2.0 CD Player
CN1
3
AC1
2
GND
1
AC2
POWER
IR IN
R73
A
220R
JACK-CKX-3.5-12
CN7
K
3.5mm JACK
C115
1N 50V X7R
LK29
LK300TH
U16:A
2
3
1
4011
VDD=+5V IR
VSS=DIG.GND
U16:D
12
R78
11
+5V IR
DIG.GND 220K 13
6 4011
VDD=+5V IR
5
U16:C VSS=DIG.GND
8
4 10
R80
9
10K
R77
4011
VDD=+5V IR
10K
U16:B
VSS=DIG.GND
5
Q5
4
6
BC337
4011
R79 VDD=+5V IR
VSS=DIG.GND
10K
DIG.GND
VA2 VA2
VA1 DAC DIGITAL_2 DAC DIGITAL_2 VD3 VD3
LK59
LK2
LK300TH
LK58 LK300TH
LK34
LK300TH
LK200TH
LK49
LK12.5mm
LK42
LK300TH
DIG.GND
AP17613/7 (Rev 7) Supply / Control Bus / Digital / Relay PCB Sc
+21V UNREG
D2 D3
U3
7815
SB1H100 SB1H100
1
VI
D5 D4
C100
4700uF 35V
SB1H100 SB1H100
C95
47N PE 63V
C96
C94
4700uF 35V
47N PE 63V
2
VI
U2
-21V UNREG
7915
C107 C113
1N 50V NP0 47N 50V NP0
R74
3
IR OUT
4
100R
CN8:B
AV2-8,4-14/EC
C104
R85
100N 50V
2R2
DIG.GND
DAC DIGITAL DAC DIGITAL
LK54
LK200TH
DAC ANALOGUE
U9
7805
1 3
VI VO
VA1
C79
3
VO
47N PE 63V
D9
1N4004
DAC DIGITAL
U8
7805
1 3
VI VO
D10
1000U 25V EL
1N4004
3
VO
VA2
GND
R16
VA1
430R 2W
D7
D6 LK8 RELAY
R11
1N4004
LK300TH
2k2
1N4148
R41
Q2
C8050
100R
R40
Q3
330k
C29
R12 C9012
47uF
680R
CN4
2
R42
1
4k7
MUTE
R84
2R2
CN10
1 DIN
2
R83
100R
3
D.GND
DOUT
U22:E
U22:D
LK61
13 12 11 10
LK300TH
74HC14 74HC14
VD3
1 2
U22:A
74HC14
U22:B
74HC14
3 4
U22:C
5 6
74HC14
U22:F
9 8
74HC14
DIG.GND
U12
7805
1
VI VO
C76
47N PE 63V
U11
7805
1
VI VO
GND
+21V UNREG
L
1 L
RELAY RELAY
2
RL1:A
5V RELAY
R13
Q1
C9012
Q4 10k
C8050
R14
1k
DIG.GND
U23
2
VCC
3
C26
INPU
1
GND
100n
APTX1
DIG.GND
C27
R17
430R
100n
R82 C2
91R 33
C2
10
DIG.