Alto MAC 2.3 Service Manual

1 2 3 4 5 6 7 8
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B
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D
87654321
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Title
Number RevisionSize
D
Date: 17-Sep-2004 Sheet of
File: D:\MAC PCB .ddb Drawn By:
5
6
7
84
U3-B
NE5532
3
2
1
U3-A
NE5532R37
10K
R68
10K
R64 10K
R69
1K
R65
820
R70
10K
R75
270
R76
4.7K
R30
270
R27
100
C31
180P
C34
10U-50V
C33
180P
C28
0.15
C29
0.22U
C4
0.022U
C8
56P
C10
0.0033U
C32 56P
C11
0.0033U
C12
0.0022U
C13
0.022U
C30
0.15
ZD1
15V 1N4744
ZD2
15V 1N4744
D18 D19
D16
1N4148*4
D17
R16
820
R34
820
R21 10K
R15
0.2-5W
R13
0.2-5W
R9
22-1W
R6
0.2-5W
R77
0.2-5W
R8
0.2-5W
R78
0.2
R14
0.2-5W
R29
1.5K
R19
47K
R7
0.2-5W
R18
150K
R23
13.0K
R20
150K
R17
3K-3W
R28
3W 3K
-15V_B
+15V_B
D9
1N4937
D5
1N4148
D10
1N4937
D6
1N4148
D7
1N4148
D2
1N4004
D3
1N4148
D1
1N4004
D4
1N4148
D11
1N4148
D8
1N4148
VR1
100
ZD3
5.6V
R36
90
VR3
2.2K
VR2
2.2K
ZD4
5.6V
Q9
HMBT2222A
Q10
HMBT2222A
Q8
2SC5200
Q6
2SC5200
Q7
2SC5200
Q13
2SC5200
Q1
2SA1943
Q2
2SA1943
Q3
2SA1943
Q14
2SA1943
Q5
15033
Q4
15032
R10
6.8-1/2W
R11
6.8-1/2W
R25
499K
R4
1K-3W
R5
1K-3W
+VCC_B
-VCC_B
R1
5.6-2W
T1
COIL
R2
3W 12
R3
3W 12
C3
0.068U
E200
E201
JP16
JP15
1+
1-
2+
2-
SPEAKON
J103+
J103-
BR_POS
BR_NEG
PSA3900(MAC2.3) Schematic Diagram 2 of 4
CHANNEL-B
Channel-B
R12
22
C7
0.001U
R33
47
DingNianCong
+IN B
-IN B
F-30-B
F--SND-B
F-BYP-B
CLIP-B
BR-RET
PSA-3000
R67
20K
R35
20K
^R_0805
^R_0805
^C_0805
^R_0805
^R_0805
^R_0805
^R_0805
^R_0805
^C_0805 ^R_0805
^R_0805
^R_0805
^R_0805 ^R_0805
^R_0805
^R_1206
^R_1206
^R_1206
^R_1206
^C_1206
^R_1206
^C_1206
^R_1206
^R_1206
A1
A1
A1
P1
P1
P1
P1
P1
P1
P1
P1
2
4
PSA3900-R
+SPK
E112
-SPK
-VCC_B
+VCC_B
GND
+VCC_B
-VCC_B
SP_B
C1
3300U/100V
C35
3300U/100V
C36
3300U/100V
C2
3300U/100V
C6
220U
C5
220U
+78V
-78V
CN3:4
CN3:3
CN2:3
CN2:4
CN3:6
CN3:5
CN2:5
CN2:6
CN3:1
CN3:2
CN3:7
CN2:1
CN2:2
CN2:7
TO VR2(VOL)
TO LED 4(SIG B)
TO LED 4(SIG B)
^C_1206
R63
10K
R66
270
R74
100
R62
39K
R71
7.5K
R43
150K
R72
100
Q12
HMBT5401
-14V
+14V
14
15
13
12
16
10
9
U1B
LM13700
^R_0805
^R_0805
^R_1206
^R_0805
^R_0805
^R_0805
A1
C15
100UF-25V
^R_0805
be modify
be modify
BR MONO RETURN-CAUTION,SENSITIVE NODE
SW-GND FOR CLIP LIM
8

Alto MAC 2.3 Specifications

General

Brand	Alto
Model	MAC 2.3
Category	Amplifier
Language	English