Cambridge Audio Azur 351R, Service Manual

Page: 14 / 46

14
Amp PCb Schematic 1
1
2 3 4
6
7
8
9 10
13
14
15
MUTE
STBY
+PWVS
+VS
IN-
IN+
IN+MUTE
MUTE
STBY
STBY-GND
-VS
-PWVS
BOOTSTRAP OUT
12
B/L
IC12
TDA7294V
C82
220UF/25V
R66 680
R71 15K
R48
15K
C86
152J/63
MUTE
STBY
BUF_C
1
2 3 4
6
7
8
9 10
13
14
15
MUTE
STBY
+PWVS
+VS
IN- IN+
IN+MUTE
MUTE STBY
STBY-GND
-VS
-PWVS
BOOTSTRAP OUT
12
B/L
IC9
TDA7294V
C83
220UF/25V
R67 680
R72 15K
C91 22UF/50V
R49
15K
C87
152J/63
MUTE
STBY
BUF_RS
1
2 3 4
6
7
8
9 10
13
14
15
MUTE STBY
+PWVS
+VS
IN- IN+
IN+MUTE
MUTE STBY
STBY-GND
-VS
-PWVS
BOOTSTRAP OUT
12
B/L
IC8
TDA7294V
C79
220UF/25V
R64 680
R69 15K
C89
22UF/50V
R44 15K
C84
152J/63
MUTE
STBY
BUF_LS
1
2 3 4
6
7
8
9 10
13
14
15
MUTE
STBY
+PWVS
+VS
IN-
IN+
IN
+M
U
TE
MUTE STBY
STBY-GND
-VS
-PWVS
BOOTSTRAP OUT
12
B/L
IC11
TDA7294V
C80
220UF/25V
R65 680
R70 15K
R46
15K
C85
152J/63
MUTE
STBY
R18
10K
R47
22K
R15
10K
R35
22K
R30
10K
R52
22K
R17
10K
R45
22K
Q16
A1015
R90 100K
KF-YL-03
C96 10
4J
/10
0V
(P
OL
Y)
C99 10
4J
/10
0V
(P
OL
Y)
C102 10
4J
/10
0V
(P
OL
Y)
C104 10
4J
/10
0V
(P
OL
Y)
R58 1K
R59 1K
R60 1K
R57 1K
C19
10U/50
C43
10U/50
C25
10U/50
C10
10U/50
R86 10R/1/4W
C100
10
4J
/10
0V
(P
OL
Y)
R85
10R/1/4W
C98
10
4J
/10
0V
(P
OL
Y)
R87 10R/1/4W C101 104
J/1
00
V(
PO
LY
)
R83 10R/1/4W
C97
10
4J
/10
0V
(P
OL
Y)
R89 10R/1/4W C103
10
4J
/10
0V(
PO
LY
)
1 3 5
2 4 6
JK
8
W
P6
-1
0A
/E
FL FR
C
RS LS
3 1
2 4
JK
9
W
P4
-1
0A
/E
C17 104-0805
C18 104 C20 104
E2 E3 E4
D2
1N4148
MCU+5V
D4
1N4148
C59
3300U/6.3
D
GN
D
R40
10K
R122 270K
D
GN
D
Q3 C1815
R120 27K
R42 10K
Q52 A1015
D6
1N4148
D5
1N4148
R41 10K
R123 270K
D
GN
D
Q4
C1815
R121 27K
R43 10K
Q53 A1015
D8
1N4148
D7
1N4148
R124 220K
R125 220K
SYS-M
SYS-MUTE
SUB_MUTE
-15V
SUB-M
R109 15K
R105 22K
Q51 A1015
D
GN
D DW2 ZPD3.6
VCC
POP-M
FAN+15V
TEMP SENSOR
RT1
02DSB282J
R6 43
K
R14 1K
R7 39
K
1 2
M
FAN
1 2
CN7
2P(2.0)
D
GN
D
2 3
1
4
IC1A LM393P
6 5
7
8
IC1B LM393P
Q1
C1815
R1 2K/1% R11 6.8K/1%
D
GN
D R2
18K/1%
R3
1.8K/1%
D
GN
D
R4 220/1%
R12
12K/1%
R13 1.2K/1%
D
GN
D
D
GN
D
HEAT SINK SENSOR
C105 104
D
GN
D
PROTECT
Q2
2S
C1
62
7A
-Y
D
GN
D
C112 104
RS_O LS_O C_O FR_O
FL_O
Q12
OPEN
R140 OPEN
A
GN
D
R144 47
K
R150 470R
SYS-M
C1 1000U/50V
C11 1000U/50V
C21 1000U/50V
C147 1000U/50V
AMP-VSS
AMP+VCC
AMP-VSS
AMP+VCC
AMP-VSS
AMP+VCC
AMP-VSS
AMP+VCC
R9
RF/0.22/1W
D
GN
D
+
AC2
-
AC1
BL1
RS806
C64
0.1U/100V
C65
0.1U/100V
1 2
1 2 3
AMP-VSS
AMP+VCC
3 2 1
~14V ~31V ~31V
FAN+15V
D
GN
D
300mA
4A 4A
3
~17V ~17V
0.5A
0.5A
1 2
5P2.5
TO FUSE BRD (CN16)
R8
10R/1W
D1
1N4001
C60 1000U/
25
C66
10000U/50V
C67
10000U/50V
FH
2
T10AL 250V
FH
1
T10AL 250V
1 2 3
CN12 3P3.96
R135
RF1R/1W
R134
RF1R/1W
C136 3300UF/25V C137 3300UF/25V
C133 104 C134 104
O
3
G
1
I
2
IC14 KA7915
C131
220U/
25
C132
220U/
25
C128
104
C130 104
A
GN
D
+
AC2
-
AC1
BL3
DB
10
7G
I
1
G
2
O
3
IC15
KA7815
!
!
-15V
+15V
A
GN
D
!
!
!
!
!
AMP+VCC
AMP-VSS
1 2
~10V
2A
R136
RF0.22R/1W
+
AC2
-
AC1
BL4
KBL005
C140
10
00
0U
F/
16
V
C135 104
D
GN
D
VCC
VCC
!
!
1 2
CN9 2P3.96
1 2 3 4 5
CN1 5P(2.5)
Q15
OPEN
R143 OPEN
A
GN
D
R151 470R R148 47
K
SYS-M
Q14
OPEN
R142 OPEN
A
GN
D
R147 47
K
R152 470R
SYS-M
Q13
OPEN
R141 OPEN
A
GN
D
R146 47
K
R153 470R
SYS-M
AC17V
1 2
~4.2V
0.2A
TO
VFD
(F1,F2)
18*35mm
1
2 3 4
6
7
8
9 10
13
14
15
MUTE
STBY
+PWVS
+VS
IN- IN+
IN+MUTE
MUTE STBY
STBY-GND
-VS
-PWVS
BOOTSTRAP OUT
12
B/L
IC10
TDA7294V
C81
220UF/25V
R68 680
R73 15K
R51
15K
C88
152J/63
MUTE
STBY
R22
10K
R50
22K
R61 1K
C37
10U/50
Q11
OPEN
R39 OPEN
A
GN
D
R145 47
K
R149 470R
SYS-M
C22 1000U/50V C36 1000U/50V
AMP-VSS
AMP+VCC
C26 104 C24 104
C29 4.7U/50V
R79 22
K
C30 22U
/16
+15V
A
GN
D
R82 10
K
R84 10
K
Q8 C2120
R53
22
K
D10
1N4148
R81 220K
MUTE
STBY
MCU+5V
D9 1N4148
AMP-STB
SYS-MUTE
POP-M
D12 1N4148
C92 22UF/50V
C90 22UF/50V
C93 22UF/50V
C48
104-0805
C47
104-0805
TERMINAL ERTH
E
C46 104
E5
D
GN
D
BUF_FL
BUF_FR
VCC
C42 104
C41
104
D
+5
.6
V
D3 1N4001
I
1
G
2
O
3
IC5
KA7805
C44 100U/
16
C73
100nJ/100V
R137 NC R133 12K/2W
LR4
15R+1.6uH
LR5
15R+1.6uH
LR2
15R+1.6uH
LR3
15R+1.6uH
LR1
15R+1.6uH
C95
10
4J
/10
0V
(P
OL
Y)
C106
10
4J
/10
0V
(P
OL
Y)
C78
10
4J
/10
0V
(P
OL
Y)
C77
10
4J
/10
0V
(P
OL
Y)
C94
10
4J
/10
0V
(P
OL
Y)
C107
10
4J
/10
0V
(P
OL
Y)
D13 1N4148
D
+5
.6
V
5V
Amp-sch 1/2
164