ISSUE
DRAWING NO
DRAWING I LE
DA E
Fi ename:
ECO No DESCR P ION OF CHANGE
L962C 3_2 0_Power Amplifier sch
P1 Amplifier Main PCB
Contact Engineer:
L962CT
22 Aug 2003
NI IALS
Pr n ed:
3 3Sheet of
Notes:
Contact el: 01223) 203243Kev n Lamb
A & R Cambridge Ltd
Pembroke Avenue
Cambridge CB5 9PB
Waterbeach
23425
AGND_S G
AGND_PSU1
AGND_PSU1
AGND_SIG
AGND_SIG
Trim output stage Iq
AGND_SIG
AGND PSU3
VP58V
VN58V
AGND_RC
Measure Iq
R118
K7
0W25
1206
R1 8
1M0 0W25
1206
R102
6K8 0W25
1206
R103
6K8 0W25
1206
R150
1K0
0W25
1206
R1 9
6K8
0W25
1206
R109
100R
0W25
1206
R16
22R
0W25
1206
R175
150R
0W25
1206
R177
150R
0W25
1206
R178
150R
0W25
1206
R176
150R
0W25
1206
R15
1K0
0W25
1206
R155
1K0
0W25
1206
R152
1K0
0W25
1206
R165
22R
0W25
1206
R110
100R
0W25
1206
R18
R7
2W
CF
R153
1K0
0W25
1206
R13
7R
0W25
1206
R136
7R
0W25
1206
R133
7R
0W25
1206
R135
7R
0W25
1206
TR101
FMMT 97
SOT-23
TR102
FMMT 97
SOT-23
TR10
FMMT 97
SOT-23
TR103
FMMT 97
SOT-23
TR105
FMMT 97
SOT-23
TR115
FMMT597
SOT-23
TR117
FMMT597
SOT-23
TR116
FMMT597
SOT-23
TR118
FMMT597
SOT-23
TR123
2SA17 0
SOT-89
TR125
2SC 5 8
SOT-89
TR126
SAP15NY
SAP
TR127
SAP15NY
SAP
TR128
SAP15PY
SAP
TR129
SAP15PY
SAP
RV100
100R
LIN
2
3
1
8
IC101A
TL072CD
SO-8
6
5
7
C101B
TL072CD
SO-8
TR122
B17 0
SOT-89
D111
1N 003
DO- 1
D112
1N 003
DO- 1
D108
BAV99
SOT 23
TR12
B 5 8
SOT-89
C10
100N
50V
0805
D100
BAS16
SOT-323
D101
BAS16
SOT-323
D10
BAS16
SOT-323
DZ100
BZX8 C
V7
SOT-23
DZ101
BZX8 C
V7
SOT-23
DZ102
DZ103
C102
C150
7N
100V
MKS2
C136
VP67V
VN67V
AGND_S G
GA N
P7
ARCAM
GA N
R106
100R 0W25
1206
C126
1N0
100V
FKP2
3
2 1
G
12
3
CON101
Neutrik
NC3FBH2-B
3
21
G
1 2
3
CON100
Neutrik
NC3MBH-B
NC1
C1
NO1
SW100A
SPUN191 00
SCRN
SKT100
KUNMING
GOLD
VCC
7
VO
6
N
3
REF
1
N-
2
SNS
5
VEE
IC100
SSM21 3S
SO-8
C100
100N
50V
0805
C101
100N
50V
0805
C129
70P
100V
FKP2
NC2
C2
NO2
SW100B
SPUN191 00
NC1
C1
NO1
SW101A
SPUN191 00
NC2
C2
NO2
SW101B
SPUN191 00
1
2
CON102
R183
10R 2W
CF
L100
2U2
LS100
G P PRECISION
AGND_LS
RLY2A
Omron
G2R-1-E-12VDC
VIPROT
DC
DGND
AGND_PSU3
AGND_PSU3
DGND
VP58V
VN58V
DGND
AGND_PSU3
THERM
Instant SOA limiting
DC offset detection
Over temperature sensing
R166
1K2
0W25
1206
R167
1K2
0W25
1206
R108
330R
0W25
1206
R107
330R
0W25
1206
R162
1K0
0W25
1206
R163
1K0
0W25
1206
R113
100R 0W25
1206
R111
100R
0W25
1206
R116
18K
0W25
1206
R117
18K
0W25
1206
R172
22K
0W25
1206
R173
22K
0W25
1206
R17
22K
0W25
1206
R11
100R
0W25
1206
R115
100R
0W25
1206
R112
100R 0W25
1206
R171
22K
0W25
1206
R186
120K
0W25
1206
R187
39K
0W25
1206
R185
100K
0W25
1206
R181
10K
0W25
1206
R182
10K
0W25
1206
R179
270R
0W25
1206
R180
22K
0W25
1206
R170
22K
0W25
1206
R120
K7
0W25
1206
D102
BAS16
SOT-323
D103
BAS16 SOT-323
TR119
FMMT597
SOT-23
TR120
FMMT597
SOT 23
TR121
FMMT597
SOT-23
TR111
FMMT 97
SOT 23
TR107
FMMT 97
SOT-23
TR108
FMMT 97
SOT 23
TR109
FMMT 97
SOT-23
TR110
FMMT 97
SOT-23
D105
BAS16
SOT-323
3 1
13
OPTO100B
PC3Q66Q
MINI-FLAT
1
2
16
15
OPTO100A
PC3Q66Q
MINI FLAT
7
8
10
9
OPTO100D
PC3Q66Q
MINI-FLAT
5
6
12
11
OPTO100C
PC3Q66Q
M NI-FLAT
DZ10
BZX8 C
15V
SOT-23
C1 3
100UF
25V
YK
C107
100N
50V
0805
C105
100N
50V
0805
C106
100N
50V
0805
C1 8
100UF
16V
NONP
C1 9
100UF
16V
NONP
RTH100
PTC 110DEG
PTC
TR106
FMMT 97
SOT-23
D109
SBYV27-200
DO-15
D110
SBYV27-200
DO-15
C118
100N
100V
MKS2
C119
100N
100V
MKS2
DBR100
W02G
AGND_PSU3DGND
R156
1K0
0W25
1206
TR132
BC859B
SOT-23
TR112
BC8 9B
SOT 23
R160
1K0
0W25
1206
R158
1K0
0W25
1206
R159
1K0 0W25
1206
C108
100N
50V
0805
DGND
SHUTDOWN*
BASE1
EMITTER1
EMITTER2
BASE2
OUTPUT
BASE1
EMITTER1
EMITTER2
BASE2
OUTPUT
R119
K7
0W25
1206
R121
K7
0W25
1206
R122
K7
0W25
1206
5V(D) 5V(D) 5V(D)
VIPROT
DCPROT
THERMPROT
VIPROT
DCPROT
THERMPROT
C127
100UF
25V
CFNE
C128
100UF
25V
CFNE
AGND_S G
AGND PSU1
AGND_PSU1
60V DC Output Fault Detect
C137
10N
50V
0603
C138
10N
50V
0603
AGND_S G
AGND_S G
R137
0R0
0W25
1206
SELECT XLR
SELECT PHONO
TR100
FMMT 97
SOT-23
TR11
FMMT597
SOT 23
C116
100N
100V
MKS2
C117
100N
100V
MKS2
C113
100N
100V
MKS2
C115
100N
100V
MKS2
C1
7P
200V
0805
C1 6
7P
200V
0805
C1 5
7P
200V
0805
C1 7
7P
200V
0805
C12
7UF
100V
YK
C125
7UF
100V
YK
AGND_PSU3
R161
22R
0W25
1206
R100
10R
0W25
1206
R101
10R 0W25
1206
D106
BAV99
SOT 23
D107
BAV99
SOT-23
15VD
-15VD
15VD
-15VD
R123
820R
0W25
MF
R129
100R
0W25
MF
R12
6K8
0W25
MF
R132
22K
0W25
MF
R1 2
22R
0W25
MF
R1 3
22R
0W25
MF
C122
7UF
100V
YK
C123
7UF
100V
YK
R139
1K5 0W25
MF
R1 5
1K8 0W25
MF
R1 1
1K5 0W25
MF
R1 7
1K8 0W25
MF
R138
1K5 0W25
MF
R1
1K8 0W25
MF
R1 0
1K5 0W25
MF
R1 6
1K8 0W25
MF
P101
P102
P107
P11
P105 P112
P106
P113
P108
P109
P115
P110
P111 P116
P123
P121
P131
P126
P12
P128
P129
P120
P117
P13
P133
P139
P1 1
P1 0
P1 3 P1
P1 2
P138
P136P132 P137
P1 9
P150
P1 5
P1 7
P1 8
P151 P152
P155
P153
R151
1K0
0W25
1206
C135
6U8 63V
MKS
AGND_PSU1
AGND PSU1
AGND_SIG
AGND_SIG
CHASSIS1
CHASSIS1
P100
P130
P127
P135
P122
P125
P1 6
TR130
MMUN2111LT1
SOT-23
5V(D)
C103
100N
50V
0805
AGND_SIG
03_E055 KAL Minor Change to re-abel gain switch pos tions A.118/02/03
GAIN=28.3
GAIN=37.0
03_E111 KAL B011/0 /03
C120
7UF
100V
YK
C121
7UF
100V
YK
AGND PSU1
AGND_PSU1
C110
100N
100V
MKS2
C111
100N
100V
MKS2
AGND_SIG
AGND_SIG
C130
22UF
20V
OSCON
C131
22UF
20V
OSCON
C132
22UF
20V
OSCON
C133
22UF
20V
OSCON
C13
22UF
20V
OSCON
C11
100N
100V
MKS2
NF
TR131
MMUN2111LT1
SOT-23
5V(D)
TR113
MMUN2211LT1
SOT-23
P15
R157
1K0
0W25
1206
5V(D)
R125
6K8
0W25
MF
R126
6K8
0W25
MF
R127
6K8
0W25
MF
R128
6K8
0W25
MF
1
2
CON103
HARWIN
M20-973
R168
150K
0W25
MF
R169
150K
0W25
MF
NF
AGND PSU1
REF100
LM 31AIM3
SOT-23
REF101
LM 31AIM3
SOT-23
AGND_S G
R130
12K
0W25
1206
R10
2K2
0W25
1206
R131
12K
0W25
1206
R105
2K2
0W25
1206
NF
P103
P10
P118
P119
C109
C112
AGND_S G
AGND_S G AGND PSU1
AGND_PSU1
NF
NF
NF
Corrected CON , Redesigned protect on cct and voicing mods
03_E18 KAL B.123/06/03 Changed sorbothane part numbers, corrected R179-182, R185-187
R188
18K
0W25
1206
R190
18K
0W25
1206
R189
2K2 0W25
1206
R191
2K2 0W25
1206
DZ105
BZX8 C
33V
SOT-23
DZ106
BZX8 C
33V
SOT-23
03_E203 KAL 1.016/07/03 Production Re ease, VI Limiting changes
C1 1
10UF
50V
YK
C1 2
10UF
50V
YK
P157
P156
DZ107
BZX8 C 6V8
SOT-23
P158
C151
100N
50V
0805
R192
NF
NF
03_E2 9 KAL 2.022/08/03 Stab lity mods
C1 0
33P 250V
PP
C139
33P 250V
PP
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