Alto MAC 2.4 Service Manual

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B
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87654321
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Title
Number RevisionSize
D
Date: 17-Sep-2004 Sheet of
File: D:\MAC\4 PCB .ddb Drawn By:
5
6
7
84
U2-B
NE5532
3
2
1
U2-A NE5532
R46 10K
R48 10K
R41 10K
R45
1K
R42
820
R44 10K
R56
270
R57
4.7K
R50
270
R26
100
C21
180P
C27
10U
C20
180P
C25
0.15
C26
0.22U
C4
0.022U
C23
56P
C8
0.0033U
C22 56P
C9
0.0033U
C7
0.0022U
C6
0.022U
C24
0.15
Q11
HMBT5401
ZD5
15V 1N4744
ZD6
15V 1N4744
D12 D13
D15
1N4148*4
D14
R22
820
R24
820
R21
10K
R17
0.2-5W
R15
0.2-5W
R11
22-1W
R8
0.2-5W
R38
0.2-5W
R10
0.2-5W
R37
0.2-5W
R16
0.2-5W
R20
1.5K
R7
47K
R9
0.2-5W
R52
150K
R54
13.0K
R53
150K
R18
3K-3W
R19
3W 3K
-15V_A
+15V_A
D9
1N4937
D6
1N4148
D8
1N4937
D5
1N4148
D7
1N4148
D2
1N4004
D4
1N4148
D1
1N4004
D3
1N4148
D10
1N4148
D13
1N4148
VR1
100
ZD1
5.6V-1/2W
R23
90
VR2
3.3K
VR3
3.3K
ZD2
5.6V-1/2W
Q9
HMBT2222A
Q10
HMBT2222A
Q8
2SC5200
Q6
2SC5200
Q7
2SC5200
Q19
2SC5200
Q1
2SA1943
Q2
2SA1943
Q3
2SA1943
Q18
2SA1943
Q5
15033
Q4
15032
R12
6.8-1/2W
R13
6.8-1/2W
R59
499K
R4
1K-3W
R5
1K-3W
+VCC_A
-VCC_A
SP_B
R1
5.6-2W
T1
COIL
R2
12-3W
R3
12-3W
C3
0.068U
E200
E201 JP16
JP15
1+
1-
2+
2-
SPEAKON
J203+
J203-
BR_POS
BR_NEG
PSA3900(MAC2.3) Schematic Diagram 1 of 4
CHANNEL-A
Channel-A
R14
22-1W
C5
0.001U
R6
47
TH_A
R55
11.0K
R32
1K
R58
33K
R24
33K
R60
3.3K
PSA-3000
^R_0805
^R_0805
^R_0805
^C_0805
^R_0805
^R_0805
^C_0805
^R_0805
^R_0805
^R_1206
^R_1206
^R_1206
^R_1206
^R_0805
^R_0805
^C_1206
^R_0805
^R_1206
^R_0805
^R_0805
^C_1206
^R_0805
^R_1206
^C_1206
^R_1206
^R_1206
^R_1206
^R_0805
R51
20K
R31
20K
^R_0805
^R_0805
R22
6.8-1W
A1
A1
A1
A1
A1
P1
P1
P1
P1
P1
P1
P1
P1
P1
P1
DingNianCong
1 4
PSA3900-L
+SPK
-SPK
E112
GND
-VCC_A
+VCC_A
C1
3300U/100V
C12
3300U/100V
C2
3300U/100V
C13
3300U/100V
C19
220U-25V
C18
220U-25V
CN1:11
CN1:11
SP_A
CN1:10
CN1:10
CN1:12
CN1:12
CN1:13
CN1:13
NC
NC
NC
CN1:5
CN1:5
CN1:6
CN1:6
CN1:7
CN1:7
CN1:4CN1:4
-78V
+78V
TO LED 2(SIG A)
CN2:2
CN1:2
CN1:1
CN2:1
CN1:4
CN2:4
CN2:3
CN1:3
TO VR1(VOL)
CN2:5
CN1:5
CN2:6
CN1:6
CN2:7
CN1:7
TO LED1(CLIP A)
+IN B
-IN B
F-30-BF-SND-B
F-BYP-B
BR-RET
BR-CUT
CLIP-B
1
3
5
7
9
11
13
15
17
19
21
23
25
2
4
6
8
10
12
14
16
18
20
22
24
26
CN104
BR_BAL
A1
BR_BAL
+VCC_A
^C_0805
R40
10K
R39
270
R73
100
R61
39K
R47
7.5K
R38
150K
R49
100
-14V
C17
0.1U
+14V
3
2
4
5
1
7
8
116 U1A
LM13700
^R_0805
^R_0805
^R_0805
^R_0805
^R_0805
A1
C9
0.1-50V
C16
0.1-50V
A1
C14
100UF-25V
^C_1206
^C_1206
^C_1206
^R_0805
^C_1206
PSA3900-R
TO TH2
be modify
be modify
FILT-CAP A
FILT-BYP A
FILT-SEND A
SW TO GND FOR CLIP LIM
BR MONO FEED
7

Alto MAC 2.4 Specifications

General

Brand	Alto
Model	MAC 2.4
Category	Amplifier
Language	English