Alesis M1Active 520 Service Manual page 6

IO-PCB
22pF
C6
R6 4K7
22uF/25V +12V
XLR1
1
1
R2 10K
C2
2
3
R7 1K
3
1
R1 10K
2 2 3
C1
4
C61
22uF/25V
VR1
IC1A
20KA
TL074
22uF/25V
R5 C5
L 22uF/25V
22pF
4K7
5
6 R
7 R4 10K
C4
-12V
C3
R3
10K
TRS1
EQ_IN MB_-
22uF/25V
EQ_IN
GND MB_O
EQ_OUT
+12V
EQ_OUT
TE11
CON5P20
LED PCB
TE10
MUTE
1
2 GND
-
3
SW5
4 +
CON4P20
TO MAIN PCB
PUSH SW
Hi Freq.
SW3
R37
+2
18K2
T_OP
R38
0
43K2
I/P
R40
6K65
-2
-12V
6
LOW CUTOFF
7
R36 11K
5
56Hz
IC3B
TL074
NOT USE
C18
80Hz
R16
0
100Hz
R15
C19 +12V
NOT NOT
USE USE
2 C20 C21
1
R17
0
3
563J
563J
IC3A
R18
TL074
NOT USE
56Hz
80Hz
100Hz
SW-PCB
Acoustic Space
SW2 (SW-PCB)
AS-0(TE1.5)
AS-0(TE3.5)
C12
0 104J
AS-2(TE3.3)
C13
822J
-2
AS-2(TE1.3)
-4
AS-C(TE3.1) T_OP
C17
C15 103J 562J
AS-C(TE1.1)
12 +
5
+
100K 7 13
-
6
-
R8 8K25
8K25
TL074 IC1D
R13 R14
TL074
IC1B
-12V
C16 563J
C8
I/P
220pF
MB-C
R9 5K62
C11
R12 R10
104J 1K
1K82
10K
272J
C10 R11
C9
100uF/16V
D9 D10 D11 D12 D13
G/R G/R G/R G/R G/R
R101 R102 R103 R104 R105
470 470 470 470 470
+12V
MB_C
C83
104
MB_-
SW1
-12V
MB_O
MID BOOST
OUT IN
SW4
R24
49K9
R25
200K
C22
R26
W_IN
15K4
103J
IC3C
TL074
R27 R28
12
+ 14.0 K 14.0 K
14 10 R29
+
13 8
-
IC3D NOT USE
9 -
0
TL074
C23
C24
R19 502J
TE3
180K
1
AS_C
2
MB_C
3
AS-2
R21
4
MB_-
165K
5
R22 AS-0
6
80K6
MB_O
SW4
LOW CUTOFF
7
I/P
8
W_IN
9
10
+12V
11
T_OP
12
-12V
TO IO PCB
R42
4K32 R47 9K09
-12V
R41 7K68
9
R46 9K09
8 6
R43 7K68
10 7
R48 9K09
5
14
IC2C
IC2B
TL074
C31 C33
C32 C34
TL074
152J 152J
152J 152J
1K82 4K64
R44 R49
R45 R50
4K32 4K32
+12V
R81
10.0K
R80
6
7
10.0K 1%
TE4
C80
R82
150PF IC4-A
1
LM339
1.15K
2
W_IN
3
R83
4
1.15K
5
T_IN
6 4
+12V
7 5
R84
8 10k
-12V
IC4-B
9
LM339
-12V
10
+12V
R86
10K
TO IO PCB
R85
8
10.0K 1% 9
C81
R87
150PF IC4-C
1.15K
LM339
R88
1.15K
+12
10
C84
11
R89
104
10K
-12
IC4-D
LM339
-12V
W_IN
2SA1179
Q2
C25
47uF/10V
R32
R34
IC9
1K 15K
7812
10UF/50V
3 1
+12V I O +18V
C70
C68
104Z
C71
C69
104Z
1 3
-12V O I -18V
10UF/50V
CLIP_SENSE_WOOFER
IC10
7912
+12
C79
104
R52 R60
18K2 0
-12
R76
+12V NOT USE
R51 18K2
2 R58 13
NOT USE
1 14
R53 18K2
3 12
C37
IC2D
IC2A
103J
C35
C36 R59
TL074
TL074
152J
152J
C38 14.0K
103J
9K09 6.98K
R54 R57
R55 R56
4K02
NOT USE
1
LM3886
R63
IC7
24.9K
C51
R64
103
0
10
T_IN +
C53
103
220pF
C52
R61
9
R62 -
NOT USE
3.92K
2
R65
CLIP_SENSE_TWEETER
9.09K
R66
CLIP_SENSE_TWEETER
1K
R67
100uF/16V
C54
C85 47P
+12
Q6
MBT4401
14 R90 R91
R106
R92
47.5K 1% 820
47.5K 1%
820
R93
820
Q4 Q5
MBT4401
R107
820
C82
MBT4401
10UF/50V
13
-12
LM3886
C59 103
IC8
R69
R71
R70
1.87K
53.6K 0
10
+
C60
2SC2812
220pF
Q3
9
-
C57 C58
C56
103
NOT USE
NOT USE
R72
22.1K
R73
C26
1K
47uF/10V
R33 R35 100uF/16V
1K 15K
C65
D4 D3
1N4744 1N4744
+18V -18V
CLIP_SENSE_WOOFER 33uF/50V-L
Title
AS6 Active SP CKT
Size Document Number
A2
Date: Tuesday, December 20, 2005 Sheet 1 of 1
TE1
TE2
1
AS_C
1
2
MB_C
2
W_IN
3
AS-2
3
4
MB_-
4
5
AS-O
5
T_IN
6
MB_O
6
T_IN
+12V
7
I/P
7
8
W_IN
8
-12V
9
9
10
12V
10
11
T_OP
12
-12V
TO MAIN PCB
TO SW-PCB
M-PCB
C72 C63
104 22uF/50V
TE7
3 - 1
O/P
C55 +
2
224J
R95 C64
R94 R96
C73
R97
22uF/50V
104
10
10 10
10
1K
MUTE
TE9
MUTE
1
2
GND TO LED PIN2
3
RED
4 TO LED PIN1
GREEN
TO 3-03-0001 LED
CON4P20
TO LED PCB
C66
22UF/50V
C74
104
C62
TE8
224J
+
3 1
O/P
- 2
R100
R99
R98
C67
10
10
10 C78 22UF/50V
R101
104
10
R30
C88
1K Q1 TE6
104
2SC2713
-18V
1 -18V
47UF/50VL +18V
2
C27
C89
R31 3 G
104
10K
G
4
ZD6
C86
5 -36V
1N5242B 104
+36V
6
D5
C87
1N4148
R39
C28
104 CON6P20
100K
Rev
0