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Cambridge Audio Azur 540R V2.0 AV Receiver
Main Board - Power Output & Speaker Protection PCB Schematic
Q8
C2073
Q6
D946BR
Q5
C2705
Q3
C2240
Q7
A940
Q4
A970
Q2
A970
R24
0.22/5WX2
Q9
B817
Q10
D1047
R22
220/0.
25W
R21
4.7/0.5W
R23
4.7/0.5W
C10
150P
D1
1N4148
D2
1N4148
C11
150P
R20
220
R15
5.6K/0.25W
R16
2K
R17
2.7K
R18
220
R14
100
C8
20P
+
C9 47UF/50V
C7
12P
R13
47K
R10
470K
R9
8.2K
R12
1.5K
R11
1.8K
R8
1K
R7
1.2K
R6
1.8K
C4
122M
C3
47P
C2
152M
R5
47K
R4
820
+
C1
10U/16V
R3
100K
Q1
C2878
R2
6.8K
S+12V
+55V
-55V
R-IN
DW1
6A3
DW2
6A3
L1
0.5UH
R25
10/0.25W
R19
5.6K/0.25W
C5
102
+ C6
100U/16
Q29
C2073
Q26
D946BR
Q25
C2705
Q22
C2240
Q28
A940
Q23
A970
Q20
A970
R83
0.22/5WX2
Q31
B817
Q33
D1047
R80
220/0.
25W
R78
4.7/0.5W
R82
4.7/0.5W
C34
150P
D9
1N4148
D11
1N4148
C36
150P
R75
220
R68
5.6K/0.25W
R70
2K
R72
2.7K
R73
220
R67
100
C31
20P
+
C32
47UF/50V
C29
12P
R65
47K
R60
470K
R58
8.2K
R63
1.5K
R62
1.8K
R56
1K
R55
1.2K
R53
1.8K
C24
122M
C22
47P
C20
152M
R51
47K
R49
820
+
C18
10U/16V
R47
100K
Q18
C2878
R43
6.8K
S+12V
+55V
-55V
L-IN
DW3
6A3
DW5
6A3
L2
0.5UH
R85
10/0.25W
R74
5.6K/0.25W
C26
102
+ C27
100U/16
Q30
C2073
Q27
D946BR
Q55
C2705
Q52
C2240
Q58
A940
Q24
A970
Q21
A970
R84
0.22/5WX2
Q61
B817
Q32
D1047
R81
220/0.
25W
R79
4.7/0.5W
R159
4.7/0.5W
C35
150P
D10
1N4148
D21
1N4148
C70
150P
R77
220
R69
5.6K/0.25W
R71
2K
R151
2.7K
R153
220
R147
100
C66
20P
+
C33 47UF/50V
C30
12P
R66
47K
R61
470K
R59
8.2K
R64
1.5K
R143
1.8K
R57
1K
R138
1.2K
R54
1.8K
C25
122M
C23
47P
C21
152M
R52
47K
R50
820
+
C19
10U/16V
R48
100K
Q19
C2878
R44
6.8K
S+12V
+55V
-55V
RS-IN
DW4
6A3
DW9
6A3
L4
0.5UH
R163
10/0.25W
R76
5.6K/0.25W
C62
102
+
C28
100U/16
Q60
C2073
Q57
D946BR
Q56
C2705
Q53
C2240
Q59
A940
Q54
A970
Q51
A970
R161
0.22/5WX2
Q62
B817
Q63
D1047
R158
220/0.
25W
R157
4.7/0.5W
R160
4.7/0.5W
C69
150P
D20
1N4148
D22
1N4148
C71
150P
R156
220
R149
5.6K/0.25W
R150
2K
R152
2.7K
R154
220
R148
100
C67
20P
+
C68
47UF/50V
C65
12P
R146
47K
R142
470K
R141
8.2K
R145
1.5K
R144
1.8K
R140
1K
R139
1.2K
R137
1.8K
C63
122M
C60
47P
C59
152M
R136
47K
R135
820
+
C58
10U/16V
R134
100K
Q50
C2878
R132
6.8K
S+12V
+55V
-55V
LS-IN
DW8
6A3
DW10
6A3
L5
0.5UH
R162
10/0.25W
R155
5.6K/0.25W
C61
102
+
C64
100U/16
Q80
C2073
Q78
D946BR
Q77
C2705
Q75
C2240
Q79
A940
Q76
A970
Q74
A970
R222
0.22/5WX2
Q81
B817
Q82
D1047
R220
220/0.
25W
R219
4.7/0.5W
R221
4.7/0.5W
C92
150P
D34
1N4148
D35
1N4148
C93
150P
R218
220
R213
5.6K/0.25W
R214
2K
R215
2.7K
R216
220
R212
100
C90
20P
+
C91
47UF/50V
C89
12P
R211
47K
R208
470K
R207
8.2K
R210
1.5K
R209
1.8K
R206
1K
R205
1.2K
R204
1.8K
C87
122M
C85
47P
C84
152M
R203
47K
R202
820
+
C83
10U/16V
R201
100K
Q73
C2878
R199
6.8K
S+12V
+55V
-55V
C-IN
DW13
6A3
DW14
6A3
R217
5.6K/0.25W
C86
102
+
C88
100U/16
SYS-MUTE
FL channel
K1A
JZC-42F
J
K2C
JZC-42F
J
K3C
JZC-42F
K2B
JZC-42F
K3B
JZC-42F
Q45
C2073
Q43
D946BR
Q42
C2705
Q39
C2240
Q44
A940
Q41
A970
Q37
A970
R129
0.22/5WX2
Q49
B817
Q48
D1047
R127
220/0.
25W
R125
4.7/0.5W
R128
4.7/0.5W
C54
150P
D18
1N4148
D19
1N4148
C56
150P
R122
220
R116
5.6K/0.25W
R118
2K
R119
2.7K
R120
220
R115
100
C51
20P
+
C52
47UF/50V
C49
12P
R113
47K
R109
470K
R107
8.2K
R112
1.5K
R111
1.8K
R106
1K
R105
1.2K
R103
1.8K
C45
122M
C43
47P
C41
152M
R102
47K
R100
820
+
C39
10U/16V
R99
100K
Q36
C2878
R97
6.8K
DW6
6A3
DW7
6A3
L3
0.5UH
R130
10/0.25W
R121
5.6K/0.25W
C46
102
+ C47
100U/16
L7
0.5UH
R223
10/0.25W
BS channel
R181
2.2K
R175
22K
R179
2.2K
R177
22K
Q65
C2240
C76
2.2U/50V/NP
D28
1N4148
D30
1N4148
D27
1N4148
R189
22K
R224
2.2K
R228
22K
R166
2.2K
R226
22K
Q83
C2240
C74
2.2U/50V/NP
D37
1N4148
D36
1N4148
D38
1N4148
R167
2.2K
R172
22K
R168
2.2K
R169
22K
Q64
C2240
C75
2.2U/50V/NP
D24
1N4148
D23
1N4148
D25
1N4148
R87
2.2K
R94
22K
R89
2.2K
R92
22K
Q34
C2240
C38
2.2U/50V/NP
D14
1N4148
D12
1N4148
D16
1N4148
R88
2.2K
R95
22K
R90
2.2K
R93
22K
Q35
C2240
C13
2.2U/50V/NP
D15
1N4148
D13
1N4148
D17
1N4148
R27
2.2K
R31
22K
R28
2.2K
R30
22K
Q11
C2240
C14
2.2U/50V/NP
D4
1N4148
D3
1N4148
D5
1N4148
R29
22K
R91
22K
R171
22K
R170
22K
R227
22K
K3A
JZC-42F
-55V
+55V
S+12V
SYS-MUTE
BS-IN
+55V
-55V
FL
FR
SL
SR
C POWER
BS
R229
2.4K/3W
DW15
1N4742A
+
C95
100U/16
+55V
S+12V
R1
1.5K
R45
1.5K
R46
1.5K
R133
1.5K
R200
1.5K
R96
1.5K
Q15
C2458
Q16
C2235
Q13
C2458
Q12
C2458
Q14
A970
R32
47K
R33
47K
R34
10K
R38
100K
R37
10K
R35
10K
+
C15
470U/10
C17
104
C16
473
+14V
MUTE-DELAY
Speaker Protect
K1B
JZC-42F
J
K1C
JZC-42F
K2A
JZC-42F
RELAY-STOP
R36
1K
R39
100K
RELAY+15V
FL-OUT
FR-OUT
C-OUT
RS-OUT
LS-OUT
BS-OUT
1
2
3
4
5
6
7
8
9
10
CN16
10P2.5
C-OUT
RS-OUT
LS-OUT
BS-OUT
FR-OUT
FL-OUT
FR
FL
C
RS
LS
BS
GND
GND
GND
GND
POWER OUT
PH-R
PH-L
FROM
DECODER
BOARD
FL
FR
SL
SR
C
SYS-MUTE
BS
L-IN
R-IN
LS-IN
RS-IN
C-IN
BS-IN
over load
FR channel
RS channel
C channel
LS channel
R40
1K
+
C171
470U/10
+ C179
220U/16
R198
8.2K
D31
1N4148
+
C180
10U/50
GND
D8
IN4001
C115
10UF/16V
C116
10UF/16V
C117
10UF/16V
C120
10UF/16V
C119
10UF/16V
C118
10UF/16V
V3-LIN
V3-RIN
TO V3 BRD
AGND
1
2
3
CN2
3P(2.0)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CN18
16P2.0(180)
V3-LIN
V3-RIN
AGND
SYS-MUTE
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