Carvin CX-1252, MX-842, PB-500 Schematic
3.07Vrms
CH 1
AUDIO
INPUT
CH1
CLIP
OUTPUT
3.07Vrms
CH 2
AUDIO
INPUT
CH2
CLIP
OUTPUT
BLK
BLK
FAN
DC
YEL
YEL
LAMP
LAMP
RED
GRN
GRN
GRN
BLUE
H1-1
10µF
50V
H1-8
R30
0.56Ω
S1
H2.4 H2.3
N/U N/U
H1-2
H1-7
QC1
C101
N/U
QC2
H3-1
H3-2
QC3
QC4
QC13
QC14
QC5
H1-9
QC9
QC6
QC10
QC7
C1
10µF
C51
50V
.01µF
R101
N/U
B
C8
R31
1.5K
9
C58
.01µF
R81
1.5K
Q101
N/U
R123
47Ω
C122
470µF/16V
R1
8.2K
H2.1
N/U
H2.2
N/U
BRIDGE
SWITCH
R51
8.2K
Z101
N/U
+
C103
10,000µF
80V
C104
10,000µF
80V
R2
10K
C2
120pF
6
–
A1.B
7
+
5
R52
10K
C52
120pF
2
–
A1.A
1
+
3
C102
N/U
T101
T
N/U
D101 D103
MR502 MR502
D102 D104
-20 VDC
V+
++
V-
C5
C3
47µF
63V
C53
47µF
63V
THERMAL
FAN CONTROL
MR502MR502
560pF
R6
R3
330Ω
680Ω
R4
100K
C55
560pF
R56
R53
330Ω
680Ω
R54
100K
+
2200µF
25V
+
2200µF
C106 C108
25V
B
S
D
D
S
S
D
D
S
Q10
8P20
JMP*
N/U
Q11
15N20
Q60
8P20
Q61
15N20
V+
CH1-1 CH1-2
V-
R109
0.05Ω
5W
V+
WIRE
JMP*
N/U
102
122
114
4
5
--
-101
106
14
12781
101
105
CH2-1 CH2-2
L1
R110
0.05Ω
5W
+15VDC
C112
0.22µF
C113
0.22µF
C117
0.22µF
C116
0.22µF
+15VDC
R111
100K
D112
1N4007
R112
100K
R79
100K
R78
100K
D113
1N4007
2.5uH
C120
C121
2
3
6
5
R113
360K
–
101.A
+
R114
360K
R115
360K
–
101.B
+
R116
360K
L51
2.5uH
10pF
1
10pF
7
+15VDC
R122
-15 VDC
D109
C114
0.22µF
BB
D110
B
R127
R124
560Ω 100K
Z105
1N4735
+15VDC
-15VDC
9. CUT THIS TRACE ONLY IF H2 IS USED FOR BRIDGE
MONO PHASING.
8. ADJUST P1/P51 FOR 6mV (±0.2mV) DROP ACROSS
R109/R110 RESPECTIVELY UNIT WARM, 120 VAC LINE.
7. ADJUST P101 FOR XXX Vdc (±0.1 Vdc) AT A102 PIN 2.
6. T1 IS: 15-50098 FOR FX MIXERS.
5. ADDED AS SECONDARY OPERATION.
4. A1, A2, A101, AND A102 ARE MC33078 OP AMPS.
3. ALL RESISTORS IN OHMS.
2. ALL DIODES ARE 1N4003 (EXCEPT AS NOTED).
1. ALL CAPACITORS IN MICROFARADS (EXCEPT AS NOTED).
NOTES: UNLESS OTHERWISE SPECIFIED
7
R126
100K
B
P101
5K
10K
THERMAL
SWITCH
2
102.A
3
R119
D114
D111
R117
100K
C115
10µF
50V
B
C118
0.1µF
C119
0.1µF
R118
7.5K
RELAY THRESHOLD
–
1
+
100K
R125
6
–
102.B
+
5
C
DRAWN BY:
APPROVED:
PCB
NO:
ASSY.
NO:
REVISED BY:
JMP5
+15VDC12K
Q106
2N5400
R120
10K
Q105
J175
B
R121
100K
B
7
ARVIN
500W STEREO
POWER MODULE
C. McEUEN
30-10028
80-05028
C. MCEUEN
TO THERMAL
SWITCH
H4.1
K1
B
K51
B
QC11
BN
CH1 OUT
31.7Vrms
(250W @ 4Ω)
H4.2
H1-6
PROTECT
-20 VDC
QC12
BK
CH2 OUT
31.7Vrms
(250W @ 4Ω)
12340 WORLD TRADE DR.
SAN DIEGO, CA 92128
(619) 487-1600
FAX 487-6629
DATE:
15JAN90
DATE:
REV:
REV:
DATE:
G
O
2DEC94
+
+
D105
D106
Z103
Z104
D107
D108
R15
1.8K
Q2
MPSW42
C6
470µF
16V
R14
1K
Q3
MPSW92
1.8K
Q52
MPSW42
C56
470µF
16V
R64
1K
Q53
MPSW92
R16
R18
R65
R68
1K
1K
1K
MPSW42
MPSW42
R107
22Ω
R108
22Ω
Q4
120pF
C7
R19
22K
R17
1K
Q5
MPSW92
Q54
R66
1K
120pF
C57
R69
22K
R67
1K
Q55
MPSW92
C9
39pF
C10
39pF
C59
39pF
+
+
+15VDC
R7
2.2K
R9
4.7K
R11
7
R8
2.2K
R57
2.2K
1
R58
2.2K
Q102
Q103
Z102
C107C105
8
Z1
1N4745A
-15VDC
+15VDC
R59
4.7K
8
Z51
1N4745A
-15VDC
TIP31C
+
+
TIP32C
470Ω
CW
R12
6.8K
R10
4.7K
R61 R63
470Ω
CW
R62
6.8K
R60
4.7K
470µF
16V
470µF
16V
R5
10K
C4
82pF
6
–
A2.B
+
5
R55
10K
C54
82pF
2
–
A2.A
+
3
R103
270Ω
GND
OPT.
B
R104
120Ω
1/2W
R102
2.2K
1/2W
1N4756A
P1
5K
P51
5K
C109
220µF
50V
Q1
TIP32C
Q51
TIP32C
R105
0.56Ω
R106
0.56Ω
R13
470Ω
470Ω
1N4745A
1N4745A
C60
39pF
C110
10µF
50V
C111
10µF
50V
R21
5K
5W
1N4734A
1N4737
R70
5K
5W
R71
5K
5W
H1-3
+15VDC
H1-4
-15VDC
H1-5
QC8
H1-10
D1
Z2
1N4737
R20
5K
5W
JMP3
N/U
D51
Z52
JMP4
N/U
D52
D2
Z3
Z53
1N4734A
ORG
Desig.
A
C
D
H
JMP
K
Q6
8P20
Q7
15N20
Q56
8P20
Q57
15N20
Ch.1 1-50
2 –
10 60
2
-2 4
1
R22
150Ω
R23
N/U
R24
150Ω
JMP2
N/U
JMP1
N/U
R25
150Ω
R26
N/U
R27
150Ω
R72
150Ω
R73
N/U
R74
150Ω
R75
150Ω
R76
N/U
R77
150Ω
L 1
P
Q
QC
R
T
Z
1
11
--
31
-- -3
LABELS NOT USED
C
D
104
Q
R
28, 29,80
Q8
N/U
G
G
Q9
N/U
Q58
N/U
G
G
Q59
N/U
LAST USED LIST
Ch.2 51-100 Sys. 101-200
52
--
51
51
51
61
--
53
Z
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