Cambridge Audio Azur 840C, Service Manual

Page: 22 / 61

Cambridge Audio Azur 840C CD Player
AP19129/4
D
A
C DSP Circuit Diagram (ABus)
IR
OUT
IR
IN
IR
IN
CN100
JACK-CKX-3.5-12
3.5mm JACK
+5V
3
OPT
1
GND
2
U1
TSOP1836 IR
RECEIVER
+5V
1 2
3
U3:A
4011 VD
D
=
+5V
VSS=GND
1 2
6 5 4
NC
3
U2
OP4N25
5 6
4
U3:B
4011 VD
D
=+5V
VSS=GND
8 9
10
U3:C
4011 VD
D
=
+5V
VSS=GND
12 13
11
U3:D
4011 VD
D
=
+5V
VSS=GND
+5V
C3
10uF
16V
36
kHz
IR
receiver
A K
D1
CA
IR
D
EMODU
LATOR
1
2
5
CN1:A
AV2-8,4-14/EC
3
4
5
CN1:B
AV2-8,4-14/EC
R1
220R
0805
R3
10K 0805
R4
10K 0805
Q1
B
C
817-16
SM
R5
10K 0805
R6
100R
0805
R7
100R 0805
R8
2R
2
0805
C1
1N
50V
N
P0
SM
0805
IR
OUT
R9
47R 0805
need
to assign package
1 2 3 4 5 6 7 8 9
CN2
CONN-9W
D
-TYPE
+5V
SERIAL_RX
SERIAL_TX
RS2
3
2
R15
100R 0805
C5
1N
50V
NP0
SM
0805
C6
1N
50V
NP0
SM
0805
OUTPUT
1
GND
2
VCC
3
U4
APRX179AT
1
2
3
CN3
AV-8,4-8ES
C7
100N5 0VY5V SM
0805
C8
10U
16V
EL
R16
100R
0805
C11
1N50V NPO SM
0805
R18
75R 0805
OUTPUT
1
GND
2
VCC
3
U5
APRX179AT
1
2
3
CN4
AV-8,4-8ES
C9
100N5 0VY5V SM
0805
C10
10U
1
6V
EL
R17
100R
0805
C13
1N50V NPO SM
0805
R19
75R 0805
1
2
U6:A
74VHC14 VCC=+5V_D
IG
5
6
U6:C
74VHC14 VCC=+5V_D
IG
13
12
U6:D
74VHC14 VCC=+5V_D
IG
11
10
U6:E
74VHC14 VCC=+5V_D
IG
9
8
U6:F
74VHC14 VCC=+5V_D
IG
R20
100R 0805
R21
10K
0805
R22
100R 0805
R23
10K
0805
R24
100R
0805
R25
100R
0805
C17
100P50V Y5VS M
0805
C18
100P5 0VY5V SM
0805
MULTIPLEXER 1 MULTIPLEXE R2
1E
1
S1
2
1-
IN3
3
1-
IN2
4
1-
IN1
5
1-
IN0
6
2-
IN3
13
2-
IN2
12
2-
IN1
11
2-
IN0
10
GND
8
2E
15
SO
14
1Y
7
2Y
9
VCC
16
U7
74V
H
C153
3.3V
SO
1_U7
3.3V
C19
100N
5
0V
Y5V
SM
0805
R26
10K 0805
R27
10K 0805
1 2
3
U8:A
74V
H
C
32
VCC=3.3V
4 5
6
U8:B
VCC=3.3V
10
9
8
U8:C
VCC=3.3V
13 12
11
U8:D
VCC=3.3V
R28
0R
0805
CS8416_RXP0
MULTIPLEXER 1 MULTIPLEXER 2
1E
1
S1
2
1-
IN3
3
1-
IN2
4
1-
IN1
5
1-
IN0
6
2-
IN3
13
2-
IN2
12
2-
IN1
11
2-
IN0
10
GND
8
2E
15
SO
14
1Y
7
2Y
9
VCC
16
U9
CS8406_TXP
+5V_D
IG
C20
100N
50V
Y5V
SM
0805
SO
1_U9
SO
2_U9
fs =
4
4.1kHz
fs
=
48kHz
min
servo spdif
pass through
fs =
4
4.1kHz
spdif input pass through
R29
1K 0805
R31
430R 0805
R32
91R 0805
1
2
3
CN5
AV-8,4-8ES
C22
100P5 0VY5V SM
0805
C23
100N5 0VY5V SM
0805
GND
1
VCC
2
IN
PU
T
3
U10
APTX179AT
+5V_D
IG
+5V_D
IG
+5V_D
IG
C24
100N5 0VY5V SM
0805
C26
10U
16V
EL
R33
100R
0805
74HCT153
1
2
U23:A
VCC=+5V_D
IG
3
4
U23:B
VCC=+5V_D
IG
5
6
U23:C
VCC=+5V_D
IG
13
12
U23:D
VCC=+5V_D
IG
11
10
U23:E
VCC=+5V_D
IG
9
8
U23:F
VCC=+5V_D
IG
3
4
U6:B
74VHC14 VCC=+5V_D
IG
R65
1K 0805
+5V
T1
R1
+5V
T1
R1
400K 400K
5K 5K
C1+
1
C1-
3
C2+
4
C2-
5
T2IN
10
R1
O
U
T
12
T1IN
11
T1OU
T
14
T2OU
T
7
R1
IN
13
R2
O
U
T
9
R2
IN
8
V-
6
V+
2
VCC
16
GND
15
U28
MAX
202
SM
C144
100N
50V
X
7
R
SM
0805
C145
100N
5
0V
X
7
R
SM
0805
C146
100N
50V
X
7R
SM
0805
C147
100N
5
0V
X
7
R
SM
0805
C148
100N
50V
X
7R
SM
0805
R70
100R 0805
R71
100R 0805
C161
100N
5
0V
Y5V
SM
0805
+5V_D
IG
C162
100N
50V
Y5V
SM
0805
+5V_D
IG
C163
100N
50V
Y5V
SM
0805
3.3V
L2
47UH
SM
L3
47UH
SM
L4
47UH
SM
74HCU04
C12
100N
5
0V
X7R
SM
0805
C14
100N
50V
X
7
R
SM
0805
C21
100N
50V
X
7
R
SM
0805
C2
100N
50V
X
7
R
SM
0805
C4
100N
50V
X
7
R
SM
0805
SERVO_SPD
IF_OUT
R66
100R 0805
SERVO_SPD
IF_OUT_3.3V
C201
47P50V Y5VS M
0805
C202
47P5 0VY5V SM
0805
C215
100N
5
0V
Y5V
SM
0805 C222
100N
5
0V
Y5V
SM
0805
R85
100R 0805
C275
100N
5
0V
X7R
SM
0805
C278
100N
5
0V
CER
C279
100N
5
0V
CER
R10
220R 0805
C273
position
100R 0805
C274
p
osition
100R 0805
1
2
3
4
5
6
7
8
9
1
INDICATES
TEST
POINT
REF
SEE
DAC
TEST
SIGNALS
LIST
FOR
SIGNAL
DESCRIPTION
10
11
12
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