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EN-32
ISSUE
DRAWING NO.
DRAWING TITLE
DATE
Filename:
ECO No.
DESCRIPTION OF CHANGE
L281 CT7 BR Channel.SchDoc
AMP019 Amp BR
Contact Engineer:
L281CT
15/01/2021
INITIALS
Printed:
7
10
Sheet
of
Notes:
Contact Tel:
01223 203201
Jon Henderson
A & R Cambridge Ltd.
Cambridge CB25 9QE
Waterbeach
A3
ARCAM
LIN
RV6000
1K
AGND
AGND
TR6005
BC856B
10
0V
C
60
14
82
P
AGND
TR6023
BC846B
10
0V
C
60
30
82
P
TR6002
2SC2690A
TR6021
KSA1220A
TR6001
MMBTA42L
TR
60
24
M
M
B
TA
92
L
0W
12
5
R
60
28
33
R
0W
12
5
R
60
96
33
R
0W
12
5
R
60
43
56
0R
0W
12
5
R
60
73
56
0R
0W125
R6030
10R
0W
12
5
R
61
10
22
R
0W
12
5
R
60
11
22
R
GND_B
GND_B
TR6003
2SC2690A
TR6018
KSA1220A
D
60
06
S
1D
D
60
10
S
1D
63V
C6008
22UF
63V
C6033
22UF
100V
C6005
1uF
GND_A
100V
C6032
1uF
GND_A
+VLIFT
-VLIFT
2W
R
60
55
0.18R
2W
R
60
65
0.18R
2W
R
60
64
0.18R
2W
R
60
54
0.18R
2W
R
60
53
0.18R
2W
R
60
63
0.18R
+Input BR
-Input BR
0W5
R6035
1R0
2
3
1
8
4
IC6000A
OPA1652AIDR
AGND
-14V
+14V
0W063
R6004
10K
AGND
D6000
BAV99
ERR +VE
ERR -VE
100V
C6001
470N
20C/W
HS6000A
5400-9130+0
20C/W
HS6001A
5400-9130+0
TR6014A
NJL1302DG
TR
60
14
B
N
JL
13
02
D
G
0W5
R6086
1R0
0W
12
5
R
60
68
10
0K
1206
FS6000
7.0A
1206
FS6001
7.0A
GND_BR
1
2
8mm
J6004
LINK
1
2
8mm
J6005
LINK
1
2
8mm
J6007
LINK
1
2
8mm
J6006
LINK
-BR Input
NF
AGND
P
60
65
P6059
P6074
P6066
P6067
P6055
P6056
P6035
P6041
P6047
P6064
P
60
92
P6044
P6029
P6060
P
60
32
P
60
42
P6026
P6048
P
60
24
P6046
P6099
P6061
P6100
P6079
P6073
P6105
P6096
P6109
P6115
P6114
P6107
P6108
P6098
P6116
P
61
18
P6002
P6011
P6005
P6006
P6001
P6004
P
60
10
P
60
16
P6063
P6078
P6015
P6023
P6020
P
60
18
P6013
P6014
P6019
P6028
P6049
P6030
P6025
P6057
P6027
P6043
P
60
50
P
60
72
P6076
P6090
P
60
89
P6085
P6088
P6036
P6039
P6054
P6095
P6091
P6103
P6102
P6086
P6094
P6101
P6077
P
61
10
P6113
P6097
P6068
P
61
04
P6058
P6093
10
0V
C
60
24
10
0N
100V
C6020
100N
FILM
-BR Input
Out BR
Out BR
1
2
M20-973
CON6000
HARWIN
SHORT BR
SHORT BR
TR6000
MMBTA42L
25V
C6000
1uF
P6000
P6003
P6008
Bias measurement
ERR +VE
ERR -VE
BIAS BR+
BIAS BR-
BIAS BR+
BIAS BR-
D
60
03
N
S
R
10
20
D
60
12
N
S
R
10
20
-14V
+14V
D6004
NSR1020
+14V
50V
C6007
100N
AGND
50V
C6012
100N
5V6
DZ6000
BZX84C
0W125
R6041
220K
AGND
+14V
-14V
50V
C6037
100N
5V6
DZ6003
BZX84C
25
V
C
60
35
1U
F
25
V
C
60
13
1U
F
-14V
+14V
AGND
AGND
P6083
+BR Input
+BR Input
5
3
4
TR
60
10
B
B
C
84
6B
D
2
6
1
TR
60
10
A
B
C
84
6B
D
2
6
1
TR
60
12
A
B
C
84
6B
D
5
3
4
TR
60
12
B
B
C
84
6B
D
2
6
1
TR
60
22
A
B
C
84
6B
D
2
6
1
TR
60
20
A
B
C
84
6B
D
4
3
5
TR
60
04
A
B
C
85
6B
D
4
3
5
TR
60
07
A
B
C
85
6B
D
1
6
2
TR
60
16
B
B
C
85
6B
D
4
3
5
TR
60
16
A
B
C
85
6B
D
4
3
5
TR
60
19
A
B
C
85
6B
D
1
6
2
TR
60
19
B
B
C
85
6B
D
1
6
2
TR
60
04
B
B
C
85
6B
D
5
3
4
TR6020B
BC846BD
5
3
4
TR
60
22
B
B
C
84
6B
D
1
6
2
TR6007B
BC856BD
100V
C6009
1N0
AGND
-14V
AGND
0W
12
5
R
60
99
22
0K
AGND
TR6017
KSC3503
TR6011
KSA1381
GND_C
P
60
09
P6007
P6012
0W25
R6005
68R
GND_C
P
61
19
P
61
20
P
61
17
0W25
R6117
68R
TR6009
BC846B
TR6008
BC856B
TR6015
BC846B
TR6013
BC856B
50V
C6021
10UF
50V
C6018
10UF
0W25
R6036
12K
0W25
R6088
12K
0W
25
R
60
34
12
K
0W
25
R
60
90
12
K
D6005
BAS21LT1
D6009
BAS21LT1
P6082
P6081
P
60
87
P
60
33
P6069
P6045
P6075
P6070
P6053
P6052
P6071
P6038
P6084
27V
DZ6001
GLZ
27V
DZ6002
GLZ
D
60
07
B
A
V
19
9
D
60
08
B
A
V
19
9
100V
C6002
220UF
100V
C6039
220UF
0W1
0.10%
R6059
1K0
0W1
0.10%
R6089
1K0
50V
C6016
470P
50V
C6026
470P
D6001
NSR1020
D6014
NSR1020
0W
25
R
60
46
68
R
0W
25
R
60
69
68
R
N
F
N
F
N
F
50V
C6010
22N
50V
C6029
22N
100V
C6019
150P
100V
C6028
150P
100V
C6017
33P
100V
C6027
33P
D
60
13
N
S
R
10
20
-55V
+55V
R
E
D
LE
D
60
01
06
03
R
E
D
LE
D
60
00
06
03
0W
06
3
R
60
71
68
R
0W
06
3
R
60
72
68
R
0W
06
3
R
60
98
1K
5
0W
06
3
R
60
17
1K
5
0W
06
3
R
60
08
5K
1
0W063
R6003
3M3
0W063
R6012
20K
0W
06
3
R
60
66
15
K
50V
C6015
100N
0W063
R6108
360R
50V
C6038
100N
0W
06
3
R
61
00
4K
7
50V
C6040
1N0
0W
06
3
R
61
14
1K
5
50V
C6031
100N
0W
06
3
R
60
74
1K
5
0W
06
3
R
60
83
68
R
0W
06
3
R
60
84
68
R
0W
06
3
R
60
39
4K
7
0W
12
5
R
60
94
6K
8
0W
12
5
R
60
60
6K
8
0W
06
3
R
61
09
1K
5
0W063
R6107
68R
0W
06
3
R
61
12
1K
0
0W
06
3
R
61
16
47
R
0W063
R6111
100R
100V
C6041
1uF
50
V
C
60
34
1N
0
AGND
0W
06
3
R
60
70
0R
0
0W063
R6057
0R0
0W063
R6058
0R0
0W
06
3
R
60
26
1K
0
0W063
R6032
68R
0W
06
3
R
60
27
47
R
0W125
R6097
10K
0W125
R6040
10K
0W063
R6031
100R
100V
C6006
1uF
AGND
50
V
C
60
11
1N
0
N
F
N
F
0W063
R6015
10R
0W063
R6105
10R
0W
06
3
R
60
48
22
0R
N
F
0W063
R6016
10R
0W063
R6106
10R
100V
C6036
220N
100V
C6004
220N
0W
06
3
R
60
29
22
0R
0W
06
3
R
60
93
22
0R
0W063
R6101
3K3
0W063
R6019
3K3
0W063
R6047
0R0
0W063
R6050
0R0
0W063
R6033
1K0
0W063
R6085
1K0
0W
06
3
R
60
44
43
0R
0W
06
3
R
60
76
43
0R
0W
06
3
R
60
45
2K
7
0W
06
3
R
60
77
2K
7
0W
06
3
R
60
01
10
K
0W063
R6000
4K7
0W063
R6038
330R
0W063
R6079
330R
0W
25
R
60
67
2K
7
0W
25
R
60
80
2K
7
0W
06
3
R
60
25
1K
5
0W
06
3
R
60
95
20
R
TH
60
01
10
0R
@
25
C
TH
60
00
47
k@
25
C
TH
60
02
47
k@
25
C
N
F
NF
N
F
NF
N
F
N
F
NF
0W5
R6023
0R47
0W5
R6024
0R47
1W
R6102
47R
1W
R6006
47R
1W
R
60
37
1K
5
1W
R
60
91
1K
5
2W
R
60
75
3R
3
AGND
Op Amp Decoupling
50V
C6043
100N
50V
C6044
100N
50V
C6046
100N
50V
C6047
100N
50V
C6042
10UF
50V
C6045
10UF
+14V
-14V
100V
C6003
22P
TR6006A
NJL3281DG
TR
60
06
B
N
JL
32
81
D
G
AGND
0W063
R6002
1K0
0W063
R6007
1K0
P6122
P6017
P6022
P6112
P6121
P6126
P6062
P6123
P6125
P6129
P6128
P6124
P6037
P6031
P6040
P6130
P6131
P6127
P6111
P6034
P
61
32
P6080
P
60
51
P
61
06
NLD
NLD
TR
60
26
M
M
B
TA
92
L
0W125
R6118
47K
-55V
+55V
0W063
R6104
47R
D6011
BAS21HT1G
PLD
PLD
P
60
21
TR6025
MMBTA42L
+55V
0W125
R6103
47K
-55V
0W063
R6020
47R
D6002
BAS21HT1G
50V
C6023
22UF
2
3
1
8
4
IC6001A
LM4562MA
6
5
7
IC6001B
LM4562MA
0W125
Thin Film
R6013
15K
0W125
Thin Film
R6014
15K
0W
06
3
R
60
21
27
0R
0W
06
3
R
60
22
3K
3
100V
C6022
22P
100V
C6025
22P
0W
06
3
R
60
81
18
0R
0W
06
3
R
60
49
10
R
18_E048
PK
28/11/18
F.0
Amplifier improvements
0W063
R6113
360R
19_E007
JH
11/02/2019
G.0
Rx113 changed to 360R
NF
NF
NF
NF
0W
12
5
R
60
82
22
0K
0W125
Thin Film
R6010
10K
0W
06
3
R
60
18
5K
6
0W
06
3
R
61
15
5K
6
0W
06
3
R
60
51
4R
7
0W
06
3
R
60
61
4R
7
0W
06
3
R
60
52
33
0R
0W
06
3
R
60
62
33
0R
0W125
R6092
4R7
19_E027
PK
20/05/19
1.0
Value changes protection and compensation
0W
1
0.
10
%
R
60
09
30
K
0W1
0.10%
R6056
3K0
0W1
0.10%
R6087
3K0
0W1 0.10%
R6042
2K0
0W1 0.10%
R6078
2K0
20_E002
PK
06/01/20
2.0
PCB change only
21_E001
PK
12/01/21
3.0
No change to this sheet
Содержание HDA PA720
Страница 1: ...SERVICE MANUAL POWER AMPLIFIER PA720 ISSUE A ...
Страница 2: ...EN 2 Revision History Issue A Initial release ...
Страница 14: ...EN 14 EN 14 L281 Power Amplifier PCB Issue 3 ...
Страница 36: ...EN 36 EN 36 L282 Pre amp PCB Issue 2 ...
Страница 50: ...EN 50 EN 50 L283 PSU PCB Issue 1 ...
Страница 54: ...EN 54 L284 Lifter PCB Issue 1 ...
Страница 59: ...EN 59 L285 Front Panel PCB Issue 1 ...
Страница 62: ...EN 62 Overall Dimensions ...
Страница 64: ...EN 64 Exploded Drawings ...
Страница 70: ...WWW ARCAM CO UK THE WEST WING STIRLING HOUSE WATERBEACH CAMBRIDGESHIRE CB25 9PB 44 0 1223 203200 ...