Primare A31.2 User manual

PRIMARE
A31.2 Power Amplifier
Service Manual

1. Schematics and Pcb.
2. Technical Specifications.
Confidential !
This document is not allowed to show for third part without written permission
from Primare Systems AB.
This document is subject to change without notice.
Author:
Bjorn Holmqvist
Primare AB

1 2 3 4 5 6 78
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7654321
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Title
Number RevisionSize
A2
Date: 27-Feb-2007 Sheet of
File: C:\WORK\..\EM1121A5.SCH Drawn By:
- CONFIDENTIAL -
CW
R1
100K
R2
100K
R4
2K2
R6
330R
R10
10K
R7
330R
R11
1K
R8
330R
R12
330k
R13
330k
R14
5K6
R9
330R
C1
100N
C2
100N
C3
100N
R15
4.7R 2W
Z1
30V
Q1
BD677A
D1
PMLL4148
R16
680R
PIN
PIN P1
PIN
R17
100R
Q2
BC546B
Q3
BC846 Q4
BC846
Q7
BC856
1
23
Q9
2SK117GR
Q10
2SC4793
R19
430R
R20
33k
R3
100K
Q11
2SC4793
C4
470P
Q12
2SA1837
Q13
2SA1837
R21
68R
R22
280R
R18
270R
R23
100R Trim
NO1
1N02 8
C1
2C2 7
NC1
3NC2 6
COIL
4COIL 5
K1
Relay power 8A/24V
C5
1U
C6
1U
Q14
2SA1943
Q16
2SC5200
C7
470P
PIN
P2
PIN
R24
1K4
Q5
2SC2705
Q82SA1145
R5
2K2
Z2
30V
+48VR
-48VR
L1
25XØ7.8-1.1MM
R25 1.8R
R261.8R
R27 2.2R
R28 2.2R
1
2
J2
HEADER 2
R29
0.22R
R30
0.22R
R33
150K
D3
1N4148
C8
470N
R34
1M
R35
1M
R36
120K
R37
1M
D4 1N4148
Q6
BC846
D6
2V7
R38
56K
+18VR
-18VR
+18VR
R39
1K2 3W
Q15
2SA1943
Q17
2SC5200
R31
0.22R
R32
0.22R
C10
C11
1
2
3
4
5
6
JP3
HEADER 6
C14
220U/80V
C15
220U/80V
Vin
3
ADJ
1
Vout 2
REG1
LM317T
Vin
3
ADJ 1
Vout 2
REG2 LM337T
R40
15K
R41
15K
R42
402R
R43
402R
D7
BDY17D
D8
BDY17D
D9
BDY17D
D10
BDY17D
C16
10U/50V
C1710U/50V
C18
22U/50V
C19
22U/50V
+48VR
-48VR
+56VR
+56VR
-56VR
C20
C21
C22
C23
S3
200MA
S4
200MA
D5
1N4148
STANDBY
C24 nc
C25 nc
C26 nc
C27 nc
1 2
JP2
HEADER 2
D11
D12
D13
D14
D2
PMLL4148
R44
6K8
C9
470N
3
26
74
U2
OPA134UA
33
22
11
J1
XLR NC3FAH R47
1K
R48
4.3K
R49
4.3K
R50
11K
R52
2.7K
R51
11K R53 2.7K
R54
100R
+15VR
-15VR
1
2
3
S7A
SW DPDT
4
5 6
S7B
SW DPDT
D15
D16
D17
D18 C12
C13
Vin
1
Vout
2
Vout
3
Adj
4n.c. 5
Vout 6
Vout 7
n.c. 8
REG3
LM317LM
Vout
1Vin
2Vin
3Adj
4n.c. 5
Vin 6
Vin 7
n.c. 8
REG4
LM337LM
R55
2k4 R57
220R
R56
2k4
R58 220R
+15VR
-15VR
C28
22U/50V
C29
22U/50V
C30
10U/50V
C31
10U/50V
R59 15K
R60 15K
R6115K
R6215K
C32
100N
C33
100N
D19
D20
D21
D22
R63
4R7
R64
4R7
R65
100K R66
100K
R67
100K
C34
220U/80V
C35
220U/80V
3
2
6
7 4
U1
741C
3
26
74
U3 741C
+18VR
-18VR
C36
100N
C38
1U
C39
1U
NET
EM1121B5.SCH
CW
R101
100K
R102 100K
R104
2K2
R106
330R
R110
10K
R107
330R
R111
1K
R108
330R
R112
330k
R113
330k
R114
5K6
R109
330R
C101
100N
C102
100N
C103
100N
R115
4.7R 2W
Z101
30V
Q101
BD677A
D101
PMLL4148
R116
680R
PIN
PIN P101
PIN
R117
100R
Q102
BC546B
Q103
BC846 Q104
BC846
Q107
BC856
1
23
Q109
2SK117GR
Q110
2SC4793
R119
430R
R120
33k
R103
100K
Q111
2SC4793
C104
470P
Q112
2SA1837
Q113
2SA1837
R121
68R
R122
280R
R118
270R
1
W
2
R123
100R Trim
NO1
1N02 8
C1
2C2 7
NC1
3NC2 6
COIL
4COIL 5
K101
Relay power 8A/24V
C105
1U
C106
1U
Q114
2SA1943
Q116
2SC5200
C107
470P
PIN
P102
PIN
R124
1K4
Q105
2SC2750
Q1082SA1145
R105
2K2
Z102
30V
+48VL
-48VL
L101
25XØ7.8-1.1MM
R1251.8R
R126
1.8R
R127
2.2R
R1282.2R
1
2
J102
HEADER 2
R129
0.22R
R130
0.22R
R133
150K
D103
1N4148
C108
470N
R134
1M
R135
1M
R136
120K
R137
1M
D1041N4148
Q106
BC846
D106
2V7
R138
56K
+18VL
-18VL
+18VL
R139
1K2 3W
Q115
2SA1943
Q117
2SC5200
R131
0.22R
R132
0.22R
C110
C111
1
2
3
4
5
6
JP103
HEADER 6
C114
220U/80V
C115
220U/80V
Vin
3
ADJ
1
Vout 2
REG101
LM317T
Vin
3
ADJ 1
Vout 2
REG102 LM337T
R140
15K
R141
15K
R142
402R
R143
402R
D107
BDY17D
D108
BDY17D
D109
BDY17D
D110
BDY17D
C116
10U/50V
C117
10U/50V
C118
22U/50V
C119
22U/50V
+48VL
-48VL
-56VL
+56VL
+56VL
-56VL
C120
C121
C122
C123
S103
200MA
S104
200MA
D105
1N4148
STANDBY
C124 nc
C125 nc
C126 nc
C127 nc
1 2
JP102
HEADER 2
D111
D112
D113
D114
D102
PMLL4148
R144
6K8
C109
470N
3
26
74
U102
OPA134UA
33
22
11
J101
XLR NC3FAH R147
1K
R148
4.3K
R149
4.3K
R150
11K
R152
2.7K
R151
11K R153 2.7K
R154
100R
+15VL
-15VL
1
2
3
S107A
SW DPDT
4
5
6
S107B
SW DPDT
D115
D116
D117
D118
C112
C113
Vin
1
Vout
2
Vout
3
Adj
4n.c. 5
Vout 6
Vout 7
n.c. 8
REG103
LM317LM
Vout
1Vin
2Vin
3Adj
4n.c. 5
Vin 6
Vin 7
n.c. 8
REG104
LM337LM
R155
2k4 R157
220R
R156
2k4
R158220R
+15VL
-15VL
C128
22U/50V
C129
22U/50V
C130
10U/50V
C131
10U/50V
R159 15K
R160 15K
R16115K
R162 15K
C132
100N
C133
100N
D119
D120
D121
D122
R163
4R7
R164
4R7
R165
100K
R166
100K
R167
100K
C134
220U/80V
C135
220U/80V
3
2
6
7 4
U101
741C
3
26
74
U103
741C
+18VL
-18VL
C136
100N
C138
1U
C139
1U
-56VR
A
B
R45 15K
R46 15K
R69 15K
R70 15K
R7115K
R72 15K
R73 15K
R74 15K
POWER-AMP
EM1121
1/2 BN
R182100R
R180
13k
R181
47K
S4025AQ
S403
5AQ
S401
5AQ
S400
5AQ
R80
13K
R82
100R R81
47K
C145 100N/100V C146
100N/100V
C148
100N/100V
C147
100N/100V
C140
100N C137 100N
C40
100N C37 100N
+15VR -15VR
+15VL -15VL
C141
100N/50V
C142
100N/50V
C41
100N/50V
C42
100N/50V
C46
100N/100V
C48
100N/100V
C45
100N/100V
C47
100N/100V
C143
10U/50V
C144
10U/50V
C43
10U/50V
C44
10U/50V
C04
22P
C03
22P
C02
22P
C01
22P
R183
10K/2W
R184
10K/2W
R83
10K/2W
R84
10K2W

123456
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54321
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Title
Number RevisionSize
B
Date: 27-Feb-2007 Sheet of
File: C:\WORK\..\EM1121B5.SCH Drawn By:
R301
1M D301 1N4148
D302
1N4148
C301
10U/16V
R302
100K
R304
47K
D303
6.2V
R305
47K
Q301
BC846B
Q304
BC856B
C302220U/35V
R303
100K
Q302
BC846B
C303
100NF
C304
1NF
C305
1NF D304
1N5404
D305
1N5404
C306
3300/6.3V
R307
NTC 7R
R309
VDR275
R310
470K
1
2
P301
HEADER 2
C307
3300/6.3V
R308
NTC 7R
1
2
P302
HEADER 2
1
2
P303
HEADER 2
S301 3.15A
S302
3.15A
S303
3.15A
NO1
1N02 8
C1
2C2 7
NC1
3NC2 6
COIL
4COIL 5
K301
RELAY DPDT3
1 2
JP301
HEADER 2
1
2
P304
HEADER 2
1
2
JP302
HEADER 2
R311
22K
R312
47K
R315
100K
R316
100K
R313
47K
R317
3MEG
C308
100N
R318
487R
Q303
BC846B
R314
47K
C309
10U/16V
+9V
+9V
5
2
1
3
JP303
3.5MM-JACK
5
2
1
3
JP304
3.5MM-JACK
78
6
3
2
5
4
1
D306
KB2855
3
26
74
U301
741C
SW
R319
NC
1
2
3
4
6
5
T301
TRANSF33X28
D307
BDY17D
D308
BDY17D
D309
BDY17D
D310
BDY17D
R323
390R
R324
390R
R325
10K R327 4K7
D312
PMLL4148
D311
PMLL4148
Vin
1
Vout
2
Vout
3
Adj
4n.c. 5
Vout 6
Vout 7
n.c. 8
REG301
LM317LM
R328
2k2
R329
390R
STANDBY
1 2
JP305
HEADER 2
Q306
BC846B
R330
100K
R331
47K
D313
PMLL4148
R332
1R
Q307
BC856B
R339
10K
Q308
BC846B
Q309
BC846B
Q310
BC846B
Q311
BC856B
R342
100K
R341
100k
R344
100k
R343
100k
R446
1k
R345
100k
+SW
+SW
A
B
R340
NC
JP307
JP306
JP308
STANDBY
EM1121
2/2 BN
C310
330N
C311
330N

IDLE CURRENT ADJUSTMENT
1: Connect the voltmeter to JP2 ( JP102)
ADJUST R23 ( R123 ) TO 20mV
2. After the power has been on for 60 min
readjust R23 (R123)
3. Remove the voltmeter.
Instructions apply to the Right channel.
Instructions given in brackets apply to the
Left channel.

TECHNICAL SPECIFICATIONS
Output power per channel 120W/8 ohm,200W/4 ohm
(1X400W)
Output impedance 0.03 ohm
DC offset <5mV
Frequency response <10HZ-100KHZ -3db
Signal to noise A-weighted 100 dB
THD+noise <0.08%
Standby <3.5W
DIMENSIONS (WXDXH) 430X385X100 MM
Weight 16Kg