Microlab M-555 Schematics

87654321
D
3D ON/OFF
1
FRONT R
FRONT L
C
B
C1 10UF
C1' 10UF
2.2K
25
24
RT
4
LIN
5
LT
6
CL1
C4' 333
7
CL2
C5'
8
CL3
333
9
SUP
10
SDW
11
MUP
12
MDW
13
OSC
PT VSS
14
POWER
C2 822
R1
R2 220
C3
334
C2'
R1'
2.2K
822
R2' 220
C3' 334
SUBUP
SUBDOWN
MAINUP
MAINDOWN
R3 33K
C6
2.2UF
28 27
3D LED
VCC
ROUTRIN
C23 100UF
CR1
CR2
CR3
LOUT
REF
SOUT
2
R6 10K
C7 10UF
26
C7' 10UF
C11
1UF
R4
5.1K
C4 333
C5 333
C8 473
C9 100UF
C10 104
LED2
TO Pin7
R5 100K
R5' 100K
R9 27K
R8
5.1K
VBB
R6' 10K
C14
100UF
23
22
21
3
20
C2
19
18
CIN
17
CIP
16
15
PO
R7
5.1K
+VCC
U1A
8
6
5
R7'
5.1K
2
3
R12 330
R11 1K
Q1 9014
R10 100
C12
4558
0.1UF
7
4
U1B
C12'
4558
0.1UF
1
C15 100UF
+VCC
C13 1UF
R13
2.2K
PO
C16
10UF
7
9
U3
TDA7377
3 13
8
12
11
6
4
5
C14 102
C17 104
C19 470UF
15
C19' 470UF
14
10
1
2
C18 2200UF
+
-
+VP
+
SP1 4 OHM
-
-
SP2 4 OHM
+
SP3 6 ohm
D
C
B
SW1
T1
AC IN
A
1 2 3 4 5 6 7 8
BD1
+VP
C20 4700UF
25V
R15 220
VCC
ZD1
8.2V
R16
3.3K
C21 100UF
PDF created with FinePrint pdfFactory trial version http://www.fineprint.com
R17
3.3K
VBB
C22 100UF
Title
M-555 SUBWOOFER SYSTEM
Number RevisionSize
A3
Date: 25-Nov-2003 Sheet of File: F:\my file\My Design\M-555.Ddb Drawn By:
A
WANGZHAO
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