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EN-35
ISSUE
DRAWING NO.
DRAWING TITLE
DATE
Filename:
ECO No.
DESCRIPTION OF CHANGE
L281 CT10 Bias Circuit.SchDoc
AMP019 Bias Circuit
Contact Engineer:
L281CT
15/01/2021
INITIALS
Printed:
10
10
Sheet
of
Notes:
Contact Tel:
01223 203201
Jon Henderson
A & R Cambridge Ltd.
Cambridge CB25 9QE
Waterbeach
A3
ARCAM
BIAS L+
BIAS L
BIAS L-
BIAS R+
BIAS R+
BIAS R-
BIAS R-
BIAS R
BIAS L
BIAS R
BIAS SL+
BIAS SL
BIAS SL+
BIAS SL-
BIAS SL-
BIAS SR+
BIAS SR+
BIAS SR-
BIAS SR-
BIAS SR
BIAS SL
BIAS SR
NF
NF
NF
NF
NF
NF
NF
NF
0W063
R9000
200K
0W063
R9004
200K
0W063
R9010
200K
0W063
R9012
200K
0W063
R9020
200K
0W063
R9022
200K
0W063
R9030
200K
0W063
R9032
200K
0W063
R9002
10K
0W063
R9011
10K
0W063
R9021
10K
0W063
R9031
10K
50V
C9010
100N
50V
C9000
100N
50V
C9002
100N
50V
C9006
100N
50V
C9012
100N
50V
C9016
100N
50V
C9017
100N
50V
C9014
100N
50V
C9008
100N
50V
C9004
100N
0W063
R9006
10M0
0W063
R9008
10M0
0W063
R9017
10M0
0W063
R9015
10M0
0W063
R9025
10M0
0W063
R9027
10M0
0W063
R9034
10M0
0W063
R9033
10M0
NF
NF
NF
NF
P9000
P9002
P9006
P9014
P9008
P9009
P9004
P9011
P9018
P9026
P9022
P9027
P9016
P9017
P9024
P9025
BIAS L+
BIAS L-
BIAS BL+
BIAS BL+
BIAS BL-
BIAS BL-
BIAS BL
BIAS BL
BIAS BR+
BIAS BR
BIAS BR+
BIAS BR-
BIAS BR-
BIAS C+
BIAS C+
BIAS C-
BIAS C-
BIAS C
BIAS BR
BIAS C
NF
NF
NF
NF
NF
NF
0W063
R9001
200K
0W063
R9005
200K
0W063
R9013
200K
0W063
R9016
200K
0W063
R9023
200K
0W063
R9026
200K
0W063
R9003
10K
0W063
R9014
10K
0W063
R9024
10K
50V
C9001
100N
50V
C9003
100N
50V
C9007
100N
50V
C9013
100N
50V
C9015
100N
50V
C9009
100N
50V
C9005
100N
0W063
R9007
10M0
0W063
R9009
10M0
0W063
R9019
10M0
0W063
R9018
10M0
0W063
R9028
10M0
0W063
R9029
10M0
NF
NF
NF
P9007
P9001
P9003
P9005
P9013
P9021
P9015
P9023
P9010
P9012
P9019
P9020
50V
C9011
100N
+3V3
+3V3
+3V3
+3V3
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
P9028
2
3
1
8
4
IC9000A
TLV8542D
6
5
7
IC9000B
TLV8542D
2
3
1
8
4
IC9001A
TLV8542D
6
5
7
IC9001B
TLV8542D
2
3
1
8
4
IC9002A
TLV8542D
6
5
7
IC9002B
TLV8542D
2
3
1
8
4
IC9003A
TLV8542D
6
5
7
IC9003B
TLV8542D
18_E035
JH
28/09/2018
E.0
TLV8812 changed to TLV8542
18_E048
PK
28/11/18
F.0
No changes to this sheet
19_E027
JH
11/02/2019
1.0
No changes to this sheet
20_E002
PK
06/01/20
2.0
PCB change only
21_E001
PK
12/01/21
3.0
No change to this sheet
Summary of Contents for HDA PA720
Page 1: ...SERVICE MANUAL POWER AMPLIFIER PA720 ISSUE A ...
Page 2: ...EN 2 Revision History Issue A Initial release ...
Page 14: ...EN 14 EN 14 L281 Power Amplifier PCB Issue 3 ...
Page 36: ...EN 36 EN 36 L282 Pre amp PCB Issue 2 ...
Page 50: ...EN 50 EN 50 L283 PSU PCB Issue 1 ...
Page 54: ...EN 54 L284 Lifter PCB Issue 1 ...
Page 59: ...EN 59 L285 Front Panel PCB Issue 1 ...
Page 62: ...EN 62 Overall Dimensions ...
Page 64: ...EN 64 Exploded Drawings ...