Microlab M-200, M-300, M-290, M-600 Schematics

321
E
4
+VB
D
C
B
A
JK1
AC IN
AC ADAPTER IN
U1A
VR1A B50K
C1 1UF
C1'
VR1B B50K
1UF
R9
4.7K
R9'
+VB
R12 100K
SW1
C11
104
8
R13
2
3
U4A
4
4558
-VB
4.7K
R11
8.2K
C9
1UF
T1
1 2 34
2 3
R1 100K
6
5
R1' 100K
39K
1
C12 104
D1
1N5402
D2
1N5402
-VB
4558
U1B
R14 10K
+VCC
-VCC
1
7
C25 3300UF
25V
C26 3300UF
25V
R15 10K
R21
470/0.5W
R22 470/0.5W
C2 682
R2
8.2K
C2' 682
R2'
8.2K
C13 224
6
57
ZD1
9.1V
ZD2
9.1V
C14 104
+VB
-VB
U4B
R3
3.3K
R3'
3.3K
C27 47UF
C28 47UF
C15
0.47UF
VR2 B10K
R23
2.7K
R4
6.8K
R4'
6.8K
472
C16
0.47UF
-VCC
C4
0.22UF
C3
C4'
0.22UF
C3' 472
LED1
R17 22K
R5 24K
R5' 24K
C7 104
C5
2.2UF
R6 510
C5'
2.2UF
R6' 510
C18 22UF
R18 560
C8 100UF/25V
1
U2
2
1
U3
2
C7' 104
+VCC
1
U5
2
C23 104
-VCC
Title
+VCC
C6 224
R8
3.3
C6' 224
R8'
3.3
C22 100UF/25V
C19 224
R20
3.3
SP1 4 ohm
SP2 4 ohm
SP3 4 ohm
5
TDA2030A
4
3
5
TDA2030A
4
3
-VCC
C8' 100UF/25V
TDA2030A 5
4
3
C24 100UF/25V
C21 104
R19 39K
R7 39K
R7' 39K
M200/300/290/600 SUBWOOF
Number RevisionSize
A4
L.M.An
D
C
B
A
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