Microlab XA-5.1 Schematic
7654321
8
+VB
RCA1A
D
C
B
A
1 2 3 4 5 6 78
RCA1B
RCA2A
RCA3B
RCA3A
RCA3B
AC IN
R16
6.8K
R16'
6.8K
R17
6.8K
C9
10UF
C26
103/1KV
SW1
VR1A
B50K
VR1B
B50K
VR3A
B50K
VR3B
B50K
VR4A
B50K
VR4B
B50K
2
3
C1
R1
0.1UF
100K
6
C1'
5
R1'
0.1UF
100K
+VB
C11
104
8
R19
47K
123
U3A
4
4558
R18
100K
C12
104
-VB
2
3
1C1
1R1
0.1UF
100K
6
1C1'
5
1R1'
0.1UF
100K
2
3
2C1'
2R1'
0.47uf
100K
6
2C1
5
2R1
0.1UF
100K
A
T1
A
U1A
4558
-VB
U1B
R20
10K
+VB
U5A
4558
-VB
U5B
+VB
U7A
4558
-VB
U7B
4x1N4004
D3 D2
C2
682
R3
R21
10K
2R16
6.8K
+VCC
-VCC
R2
8.2K
C2'
682
R2'
8.2K
C13
224
6
57
1C2
682
R2
8.2K
1C2'
682
R2'
8.2K
2C2
682
2R2
8.2K
C22
4700UF
25V
C23
4700UF
25V
C14
104
R25
470/0.5W
R26
470/0.5W
3.3K
R3'
3.3K
U3B
1R3
3.3K
1R3'
3.3K
+VCC
2R3
3.3K
1
7
1
7
1
7
D1D4
C15
0.47uf
VR2
B10K
+VCC
ZD1
15V
ZD2
15V
C4
0.1UF
R4
1C3
6.8K
472
C4'
0.1UF
R4'
1C3'
6.8K
472
R13
10K
ZD3
5.1V
C16
0.47UF
1C4
0.1UF
1R4
1C3
68K
472
1C4'
0.1UF
1R4'
1C3'
6.8K
472
1Q1
1R13
10K
1ZD3
9014
5.1V
1R14
8.2K
2C4
0.1UF
2R4
2C3
6.8K
472
+VB
C24
R28
100UF
2.7K
25V
LED1
C25
blue
100UF
25V
-VB
+VCC
5
7
9
11
C6'
104
5
7
9
11
C6'
104
5
7
9
11
C6'
104
A
A
/25V
3
U2
TDA7265
16
C7'
100UF
+VCC
/25V
3
U6
TDA7265
16
-VCC
C7'
100UF
+VCC
/25V
3
U8
TDA7265
16
-VCC
C7'
100UF
4x1N4004
1D3 1D2
C6
C7
104
100UF
SP1
8 ohm
4
R5
C5
27K
224
R10
8
3.3
R6
430
SP2
8 ohm
2
R5'
C5'
27K
10
224
R10'
3.3
R6'
-VCC
430
/25V
1C6
1C7
104
100UF
SP4
8 ohm
4
1R5
1C5
27K
224
1R10
8
3.3
1R6
430
SP5
8 ohm
2
1R5'
1C5'
27K
10
224
1R10'
3.3
1R6'
430
/25V
2C6
2C7
104
100UF
SP6
8 ohm
4
2R5
2C5
27K
224
2R10
8
3.3
2R6
430
2
10
/25V
1R25
+VCC
470/0.5W
1D11D4
1C22
1ZD1
4700UF
15V
25V
1C23
1ZD2
4700UF
15V
25V
R26
-VCC
470/0.5W
VCC
C20
C21
/25V
104
100UF
3
5
7
4
R22
U2
47K
8
U4
9
TDA7265
10
R22'
U3
C17
1UF
11
16
C20'
104
+VB
*
1C24
1R28
100UF
2.7K
25V
1LED1'
1C25
GREEN
100UF
25V
-VB
47K
2
-VCC
C21'
100UF
/25V
*
C19
224
R24
R23
430
R23'
430
SP3
3.3
C18
16ohm
562
C19'
224
R24'
3.3
Title
XA-5.1 SUBWOOFER
Number RevisionSize
A2
Date: 27-Mar-2003 Sheet of
File: F:\huang bf\AN\Xa-5.DDBDrawn By:
SYSTEM
R11
C8
15K
1UF
Q1
9014
R14
8.2K
1R11
1C8
15K
1UF
D
C
B
A
L.M.An
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