Alto X40 User manual

ServiceManual
www.altoproaudio.com
Version: 1.1
Model: X40 (4-WAY STEREO )
ACTIVE CROSSOVER

CONTENTS
1. Specification
2. Block Diagram
3. Schematic Diagram
4. Printed Circuit Board
5. Wiring Diagram
6. Test Procedure
7. Electrical Parts List
8. Exploded Views & Mechanical Parts List
9. Notes

100Hz-1KHz
1KHz-9KHz
Av=0dB, fc=46,200,1K,5KHz
-94dBu
-95dBu
-94dBu
-92dBu
114dB
483(W) 194.5(D) 44(H)mm (19" 7.7" 1.7")
3.1Kg(6.84lb)
continuously variable
SL Hub , ow, igh variableMid, continuously
rear panel switch
S,L M,Hub ow, id igh front panel switches
rear panel switch
30Hz-250Hz
Electrical
Physical
Controls
Power Supply
Dimensions
Weight
Input Level
Output Level
CD Boost
Mute
Phase
LOW-MID Frequency Range
MID-HIGH Frequency Range
HUM & Noise
SUB e @ 0db)S ction ( utputO
LOW Section (Output@0dB)
MID S (O @0dB)ection utput
HIGH Section(Output @0dB)
S/N Ratio
SUB-LOW Frequency Range
Connector type
Type
Mains supply
Power Rating
3-pole IEC , grounded
Servo controlled , stabilized
10 W
95-120V /210-240V ,60-50Hz
1. SPECIFICATION (X40)

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Date: 2-Nov-2002 Sheet of File: D:\pc42\pc42\ALTO\ \X40\X40 BLOCKDIAGRAM.DDB服務手冊 Drawn By:
AC FUSE100mA
FUSE
5 6
AC POWER SW
AC INPUT 210V-240V
AC PLUG
50Hz
102℃
PT-SCX-34
230V
0V
115V
20V
0V
20V
BRIDGE
AND FILTER CIRCUIT
+15V
0v
-15v
2 1 3
A -CHANNEL SIGNAL CN-BAL-FEMALE-2
3 21
A TL074
VR
gain
middle - high pass
900Hz - +9KHz
high pass freq.
3 21
A TL074
high out
MID out
VR
gain
pass filter over freq.
100Hz +1KHz
Low -MID pass filter
over freq.
30Hz +250Hz
SUB-Low
SUB - LOW
pass filter
3 21
A TL074
VR
gain
lower filter pass
3 21
A TL074
VR
gain
LOW OUT
MID outMID out
MID pass filter
3 21
A
TL074
VR
gain
2 1 3
B -CHANNEL SIGNAL CN-BAL-FEMALE-2
3 21
A TL074
VR
gain
middle - high pass
900Hz - +9KHz
high pass freq.
3 21
A TL074
high out
MID out
VR
gain
pass filter over freq.
100Hz +1KHz
Low -MID pass filter
over freq.
30Hz +250Hz
SUB-Low
SUB - LOW
pass filter
3 21
A TL074
VR
gain
lower filter pass
3 21
A TL074
VR
gain
LOW OUT
MID outMID out
MID pass filter
3 21
A
TL074
VR
gain
2.Block Diagram

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TASY J.S.
ALTO Mobile : X40 MAIN BOARD
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X40 V1.0
A3
D1
4148
D2
4148
D3
4148
D4
4148
C4
220P
C1
104P/250VAC
-15V
+15V
2
1
3
S1
CN-BAL(FEMALE)
VR1
10KB
C42
100/25V
R83
10K0
R80
10K0
R81
10K0
R82
10K0
R85
10K0
R84
10K0
R86
10K0
R87
10K0
SW1
SW-PBA/2P
CD BOOST
C5
822(M)
R1
825R
C2
220P
R91
10K0
R88
15K0 R90 10K0
VR8D
B50K
R93
15K
R92
10K0
C71
182(M)
VR8C
B50K
R96
15K
R95
10K0 C72
182(M)
R94
3K57
VR8B
B50K
R98
15K
R97
10K0 C73
182(M)
VR8A
B50K
R100
15K
R99
10K0
C74
182(M)
R124
3K57
R101
10K0
R111
10K0
R112
10K0
R110
10K0
R113
10K0
R118
150R
C75
220P
C76
182(M)
C81
100/25V
R119
100K
R116
10K0
R115
10K0
R114
10K0
R117
150R
C80
220P
C82
182(M)
C79
100/25V
R122
100K
SW7
SW-PBA/2P
2
1
3
S5
CN-BAL(MALE)
HIGH OUT 1
HIGH
SW8
SW-PBA/2P
VR3
10KB
R102
4K99
R103
27K4
R108
100K
R105
4K7 R107
7K5
R104
2K7
R106
27K
+15V
R109
1K5
D8
LED
HIGH CLIP
-15V
XOVER FREQ 900Hz + 9KHz
LD4
R65
20K0
R89
2K49
R123
P1
3
2
1
IC1A
MC33079
5
6
7
IC1B
MC33079
10
9
8
IC1C
MC33079
12
13
14
IC1D
MC33079
3
2
1
IC2A
MC33079
5
6
7
IC2B
MC33079
10
9
8
IC2C
MC33079
12
13
14
IC2D
MC33079
3
2
1
IC3A
MC33079
5
6
7
IC3B
MC33079
10
9
8
IC3C
MC33079
12
13
14
IC3D
MC33079
R120
2K49
3. Schematic Diagram

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X40 V1.0
A3
R148
10K0
R44
10K0
R41
15K0 R40 10K0
VR4D
B50K
R63
10K0
R64
10K0
C64
153(M)
VR4C
B50K
R59
10K0
R60
10K0 C61
153(M)
R43
3K57
VR4B
B50K
R57
10K0
R58
10K0 C60
153(M)
VR4A
B50K
R55
10K0
R56
10K0 C57
153(M)
R45
3K57
R54
10K0
R37
15K0
R34 10K0
VR5D
B50K
R61
49K9
R62
10K0 C53
683(M)
VR5C
B50K
R50
49K9
R51
10K0 C52
683(M)
R35
3K57
VR5B
B50K
R48
49K9
R49
10K0 C50
683(M)
VR5A
B50K
R46
49K9
R47
10K0 C48
683(M)
R33
3K57
R38
10K0
R39
10K0
R143
10K0
R145
10K0
R144
10K0
R75
10K0
R10
150R
C36
220P
C27
182(M)
C30
100/25V
R11
100K
R140
10K0
R147
10K0
R146
10K0 R13
150R
C35
220P
C34
182(M)
C32
100/25V
R12
100K
SW6
SW-PBA/2P
2
1
3
S4
CN-BAL(MALE)
MID OUT 1
SW3
SW-PBA/2P
VR2
10KB
R19
4K99
R18
27K4
R16
100K
R15
4K7 R14
7K5
R70
2K7
R17
27K
+15V
R67
1K5
D9
LED
SUB CLIP
-15V
R126
10K(8B)
R128
10K
R129
10K
R73
10K0
R2
150R
C8
220P
C7
182(M)
C10
100/25V
R3
100K
R149
10K0
R131
10K0
R130
10K0 R5
150R
C15
220P
C14
182(M)
C12
100/25V
R4
100K
2
1
3
S2
CN-BAL(MALE)
SUB OUT 1
SW4
SW-PBA/2P
VR7
10KB
R25
4K99
R24
27K4
R22
100K
R20
4K7 R21
7K5
R71
2K7
R23
27K
+15V
R68
1K5
D6
LED
LOW CLIP
-15V
R135
10K0
R136
10K0
R137
10K0
R74
10K0
R6
150R
C28
220P
C17
182(M)
C20
100/25V
R7
100K
R132
10K0
R139
10K0
R138
10K0 R9
150R
C25
220P
C24
182(M)
C22
100/25V
R8
100K
SW5
SW-PBA/2P
2
1
3
S3
CN-BAL(MALE)
LOW OUT 1
SW2
SW-PBA/2P
VR6
10KB
R30
4K99
R31
27K4
R27
100K
R29
4K7 R28
7K5
R72
2K7
R26
27K
+15V
R69
1K5
D7
LED
MID CLIP
-15V
R32
10K0
XOVER FREQ 30Hz + 250Hz
XOVER FREQ 100Hz + 1KHz
C3
104P
C6
104P
C56
104P
C58
104P
C59
104P
C62
104P
C54
104P
C55
104P
C49
104P
C51
104P
+15V
-15V
C43
100/25V
C44
100/25V
C39
100/25V
C40
100/25V
C41
100/25V
C45
100/25V
R201
2R2 1/2W
R202
2R2 1/2W
1
2
3
CN1
3P2.5
AGND
C38
1000/25V
C37
1000/25V
1
2
3
4
5
CN2
4P2.0
LD1
LD2
LD3
-15V
LD1
LD2LD3
R42
2K49
R36 2K49
R78 R77
R76
CHS1CHS2
LD4
P1 3
2
1
IC4A
MC33079
5
6
7
IC4B
MC33079
10
9
8
IC4C
MC33079
12
13
14
IC4D
MC33079
3
2
1
IC5A
MC33079
5
6
7
IC5B
MC33079
10
9
8
IC5C
MC33079
12
13
14
IC5D
MC33079
3
2
1
IC6A
MC33079
5
6
7
IC6B
MC33079
10
9
8
IC6C
MC33079
12
13
14
IC6D
MC33079
3
2
1
IC7A
MC33079
5
6
7
IC7B
MC33079
10
9
8
IC7C
MC33079
12
13
14
IC7D
MC33079
3
2
1
IC8A
MC33079
5
6
7
IC8B
MC33079
10
9
8
IC8C
MC33079
12
13
14
IC8D
MC33079
3
2
1
IC9A
MC33079
5
6
7
IC9B
MC33079
10
9
8
IC9C
MC33079
12
13
14
IC9D
MC33079
411
IC1E
MC33079
411
IC2E
MC33079
411
IC3E
MC33079
411
IC4E
MC33079
411
IC5E
MC33079
411
IC6E
MC33079
411
IC7E
MC330079
411
IC8E
MC33079
411
IC9E
MC33079
C9
100/25V
C16
100/25V

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Date: 27-Jan-2002 Sheet of File: D:\pc42\pc42\pc42\S-OVER\SCX202S\SCX202S\SCX202S.ddbDrawn By:
SCX POWER Schematic
DB1
RB154
C5 104P C4 104P
IC1
L7815
IC2
L7915
C6
1000/16V
C7
1000/16V
C8
104P
C9
104P
1 2 3CN2
3P2.5
+15V
-15V
1 2
CN5
2P2.5
R1
1.2K
+15V
-15V
1 2 3
CN3
3P2.5
C18
1000/35V
C19
1000/35V
1 2 3
CN? CON3

4.Printed Circuit Diagram
X40(M) PCB LAYOUT
PCB : X40(M) Top Layer
PCB : X40(M) Top Solder Mask
PCB : X40(M) Top Overlay
PCB : X40(M) Bottom Layer

PCB : X40(M) Bottom Solder Mask
PCB : X40(M) Bottom Overlay
PCB : X40(M) Drill Drawing Plots
Hole Size Hole Count
24mil (0.6mm) 174
31mil (0.8mm) 80
39mil (1.0mm) 45
47mil (1.2mm) 68
59mil (1.5mm) 2
87mil (2.2mm) 10
150mil (3.8mm) 4
Totals 383

SCX240IO PCB LAYOUT
PCB : SCX240IO Bottom Layer
PCB : SCX240IO Bottom Solder Mask
PCB : SCX240IO Top Overlay
PCB : SCX240IO Drill Drawing Plots
Hole Size Hole Count
31mil (0.8mm) 40
39mil (1.0mm) 15
47mil (1.2mm) 10
63mil (1.6mm) 20
150mil (3.8mm) 2
Totals 87