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

+21V UNREG
+5V IR
U17
7805
1 3
VI VO
C110
10uF 25V
C111
100N 50V
DIG.GND
+5V IR
U14 36 kHz
D8
IR RECEIVER
R76
47R
CA IR DEMODULATOR
C105 C106
10uF 16V
100N 50V X7R
DIG.GND
LK29
LK300TH
U16:A
CN9
R81 2
2 3
1 1
100R
MUTE 4011
C112
VDD=+5V IR
IR FROM FRONT PANEL
100N 50V X7R VSS=DIG.GND
C116
DIG.GND R78
100N 50V X7R
DIG.GND 220K
U15
R75
DIG.GND IR IN
1 1 6
2
220R
5
CN8:A
2
AV2-8,4-14/EC
3 4
NC
OP4N25
R77
10K
R79
10K
DIG.GND
+5V IR +5V IR
+21V UNREG +21V UNREG VA2 VA2
VA1 VA1
LK30
LK5 LK59
LK9
LK300TH
LINK12.5MM LK300TH
LK39 LK300TH LK58
LK12
LK40OTH LK300TH
LK300TH
LK32 LK49
LK16
LK300TH LK12.5mm
LK300TH
LK42
LK66 LK17
LK300TH
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 DIG.GND
LK300TH
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AP17613/7 (Rev 7) Supply / Control Bus / Digital / Relay PCB Schematic
Cambridge Audio Azur 640C V2.0 CD Player
D2 D3
CN1
3 SB1H100 SB1H100
AC1
2
GND
1
AC2 D5 D4
POWER
SB1H100 SB1H100
-21V UNREG
IR IN
R73
A
220R
JACK-CKX-3.5-12
CN7
K
3.5mm JACK
C115
1N 50V X7R
C107 C113
1N 50V NP0 47N 50V NP0
U16:D
12
11
+5V IR
13
R74
4011 3
IR OUT
4
VDD=+5V IR
100R
VSS=DIG.GND U16:C CN8:B
8 AV2-8,4-14/EC
10
R80
9
10K
4011
VDD=+5V IR
U16:B
VSS=DIG.GND C104
R85
5
100N 50V
Q5 2R2
4
6
BC337
4011
VDD=+5V IR
VSS=DIG.GND
DIG.GND
DAC DIGITAL_2 DAC DIGITAL_2 VD3 VD3
DAC DIGITAL DAC DIGITAL
LK2
LK300TH
LK34
LK54
LK200TH
LK200TH
+21V UNREG
DAC ANALOGUE
U9
7805
1 3
VI VO
U3
VA1
7815
C79
1 3
VI VO
47N PE 63V
C100
4700uF 35V
D9
C95
1N4004
47N PE 63V DAC DIGITAL
U8
C96
7805
C94
4700uF 35V
1 3
VI VO
47N PE 63V D10
1000U 25V EL
1N4004
2 3
VI VO
U2
VA2
7915
GND
R16
VA1
430R 2W
D7
LK8
D6
R11
1N4004
LK300TH
2k2
1N4148
R41
Q2
C8050
100R
R40
Q3
330k
C29
R12 C9012
47uF
680R
CN4
2 R42
1
4k7
MUTE
R84
CN10 2R2
1 DIN
2
R83
3 100R
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
DAC ANALOGUE_2
U12
U1
7805
7805
1 3
1 3
VI VO
VI VO
C5
47uF
C76
C4
47N PE 63V
47N PE 63V
DAC DIGITAL_2
U11 GND
7805 GND
U21
1 3
VI VO
7805
1 3
VI VO
C98
47uF
C97
100N 50V X7R
GND
D1
AC1
LK1
+21V UNREG
1N4002
LK60SM
LK7
LK300TH
1
RELAY RELAY
RELAY
2
R15
1k
RL1:A
5V RELAY
R13
Q1
C9012
Q4 10k
C8050
C25
R14
4.7uF
1k
DIG.GND
U23
2
VCC
3
C26
INPUT
1
GND
100n
APTX179AT
DIG_OUT DIG_OUT DIG_OUT
CN5
DIG.GND
C27
ZUANBAO AV-8,4-8ES
R17 LK6
2 1
LK300TH
430R LK11
100n
LK300TH
R82 C24
91R 330pF 50V
C28 C80
47N 50V 1N 50V
C23
100n
DIG.GND
DAC CLOCK
C89
100N 50V
VD3
C99
47N PE 63V
DIG.GND
C22
1N 50V NPO
GND
19