Alto X34 User manual

ServiceManual
www.altoproaudio.com
Version: 1.1
Model: X34 (3-WAY STEREO 4-WAY MONO)
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

Electrical
LOW-MID Frequency Range
MID-HIGH Frequency Range
HUM & Noise
LOW Section (Output@0dB)
MID S (O @0dB)ection utput
HIGH Section(Output @0dB)
S/N Ratio
Controls
Input Level
Output Level
CD Boost
Mute
Phase
90Hz-1KHz
800Hz-10KHz
Av=0db, fc=230Hz,2.3KHz
98dBu
-95dBu-95dBu
93dBu
114dB
Physical
Dimensions
Weight
483(W) 194.5(D) 44(H)mm (19" 7.7" 1.7")
2.5Kg(5.51lb)
continuously variable
low, high variablecontinuously
rear panel switch
low, mid, high front panel switches
rear panel switch
Power Supply
Connector type
Type
Mains supply
Power Rating
3-pole IEC , grounded
Servo controlled , stabilized
10W
95-120V /210-240V ,60-50Hz
1. SPECIFICATION (X34)

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Date: 29-Oct-2002 Sheet of File: D:\pc42\pc42\ALTO\ \X34\X34.ddb服務手冊 Drawn By:
100mA
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 high pass freq.
3 21
A TL074
high out
VR
gain
pass filter over freq.
800Hz - +12KHz
MID - High pass filter
over freq.
100Hz -1KHz
Low-MID
lower filter pass
3 21
A
TL074
VR
gain
MID OUT
pass filter over freq. Low-MID LOW OUT
2 1 3
B-CHANNEL SIGNAL CN-BAL-FEMALE-2
3 21
A TL074
VR
gain high pass freq.
3 21
A TL074
high out
VR
gain
pass filter over freq.
800Hz - +12KHz
MID - High pass filter
over freq.
100Hz -1KHz
Low-MID
lower filter pass
3 21
A TL074
VR
gain
MID OUT
pass filter over freq. Low-MID LOW OUT
2.Block Diagram

12345678
A
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C
D
87654321
D
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B
A
X34(M).Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
4-Mar-2002 TASY J.S.
ALTO Mobile : X34 MAIN BOARD
11 of
X34 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/2PC
CD BOOST
C5
822(M)
R1
825R
C2
220P
R44
10K0
R41
15K0 R40 10K0
VR4D
B50K
R63
10K0
R64
10K0 C64
182(M)
VR4C
B50K
R59
10K0
R60
10K0 C61
182(M)
R43
3K57
VR4B
B50K
R57
10K0
R58
10K0 C60
182(M)
VR4A
B50K
R55
10K0
R56
10K0 C57
182(M)
R45
3K57
R54
10K0
R37
15K0 R34 10K0
VR5D
B50K
R61
10K0
R62
10K0 C53
153(M)
VR5C
B50K
R50
10K0
R51
10K0 C52
153(M)
R35
3K57
VR5B
B50K
R48
10K0
R49
10K0 C50
153(M)
VR5A
B50K
R46
10K0
R47
10K0 C48
153(M)
3
21
IC4A
2068M
R33
3K57
R38
10K0
R39
10K0
R107
10K0
R109
10K0
R108
10K0
R75
10K0
R10
150R
C36
220P C27
182(M)
C30
100/25V
R11
100K
R104
10K0
R111
10K0
R110
10K0 R13
150R
C35
220P
C34
182(M)
C32
100/25V
R12
100K
SW6
SW-PBA/2P
2
1
3
S4
CN-BAL(MALE)
HIGH OUT 1
HIGH
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
LOW CLIP
-15V
R91
10K0
R92
10K0
R93
10K0
R73
10K0
R2
150R
C8
220P C7
182(M)
C10
100/25V
R3
100K
R88
10K0
R95
10K0
R94
10K0 R5
150R
C15
220P
C14
182(M)
C12
100/25V
R4
100K
2
1
3
S2
CN-BAL(MALE)
LOW OUT 1
NOT USED
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
MID CLIP
-15V
R99
10K0
R100
10K0
R101
10K0
R74
10K0
R6
150R
C28
220P C17
182(M)
C20
100/25V
R7
100K
R96
10K0
R103
10K0
R102
10K0 R9
150R
C25
220P
C24
182(M)
C22
100/25V
R8
100K
SW5
SW-PBA/2P
2
1
3
S3
CN-BAL(MALE)
MID OUT 1
NOT USED
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
HIGH CLIP
-15V
R32
10K0
5
6
7
IC4B
2068M
XOVER FREQ 800Hz + 12KHz
XOVER FREQ 100Hz + 1KHz
84
IC4C
2068M
C3
104P
C6
104P
C56
104P
C58
104P
C59
104P
C62
104P
MID PHASE
MID PHASE
C9
104P
C16
104P
+15V
-15V
C43
100/25V
C44
100/25V
C39
100/25V
C40
100/25V
C41
100/25V
C45
100/25V
R201
2R21/2W
R202
2R21/2W
1
2
3
CN1
3P2.5
AGND
C38
1000/25V
C37
1000/25V
LD1
LD2LD3
SW7
SW-PBA/6PC
CH1使用 CH2使用
R65
20K0
R42
2K49
1
2CN3
2P2.5
<4-WAYMONO>
R36 2K49
1
2
CN4
2P2.5
<4-WAYMONO2>
R78 R77
R76
CHS1CHS2
3
21
IC2A
MC33079
5
67
IC2B
MC33079
10
98
IC2C
MC33079
12
13 14
IC2D
MC33079
3
21
IC1A
MC33079 5
67
IC1B
MC33079
10
98
IC1C
MC33079
12
13 14
IC1D
MC33079
3
21
IC3A
MC33079
5
67
IC3B
MC33079
10
98
IC3C
MC33079
12
13 14
IC3D
MC33079
3
21
IC5A
MC33079
5
67
IC5B
MC33079
10
98
IC5C
MC33079
12
13 14
IC5D
MC33079
3
21
IC6A
MC33079
5
67
IC6B
MC33079
10
98
IC6C
MC33079
12
13 14
IC6D
MC33079
3
21
IC7A
MC33079
5
67
IC7B
MC33079
10
98
IC7C
MC33079
12
13 14
IC7D
MC33079
411
IC7E
MC33079
411
IC6E
MC33079
411
IC5E
MC33079
411
IC1E
MC33079
411
IC2E
MC33079
411
IC3E
MC33079
R89
2K67
3. Schematic Diagram

1234
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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
X34(M) PCB LAYOUT
PCB : X34(M) Top Layer
PCB : X34(M) Top Solder Mask
PCB : X34(M) Top Overlay
PCB : X34(M) Bottom Layer

PCB : X34(M) Bottom Solder Mask
PCB : X34(M) Bottom Overlay
PCB : X34(M) Drill Drawing Plots
Hole Size Hole Count
24mil (0.6mm) 122
31mil (0.8mm) 64
39mil (1.0mm) 37
47mil (1.2mm) 48
59mil (1.5mm) 2
87mil (2.2mm) 8
150mil (3.8mm) 4
Totals 285

SCX234IO PCB LAYOUT
PCB : SCX234IO Bottom Layer
PCB : SCX234IO Bottom Solder Mask
PCB : SCX234IO Top Overlay
PCB : SCX234IO Drill Drawing Plots
Hole Size Hole Count
31mil (0.8mm) 36
39mil (1.0mm) 16
47mil (1.2mm) 8
63mil (1.6mm) 16
150mil (3.8mm) 2
Totals 78

XPWR PCB LAYOUT
PCB : XPWR Bottom Layer PCB : XPWR Bottom Solder Mask
PCB : XPWR Bottom Overlay PCB : XPWR Top Overlay
PCB : XPWR Drill Drawing Plots
Hole Size Hole Count
31mil (0.8mm) 14
39mil (1.0mm) 22
63mil (1.6mm) 3
98mil (2.5mm) 4
138mil (3.5mm) 4
Totals 90

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X34( ).Sch全
Titel Size File: Date: Drawn By:
Sheet
RevisionModel No:
29-Oct-2002 TASY J.S.
ALTO Mobile : X34 Wiring Diagram
11 of
X34 V2.0
A4
X23 Wiring Diagram
SCX234IO
X34(M)
CN4 CN3 CN1
CN5 CN4 CN3 CN1
CN2
SCX234IO
CN4 CN3 CN1
CN2
XPWR
LED
電源開關
CN2CN3
CN4 PT-SCX34
CN1
X34(M)
CN5 CN4 CN3 CN1
CN2
CN6 CN6
GND
110V
紅藍
AC IN
5. Wiring Diagram

X34-ALTO-230V
Structure Needing Material Detail List
Midprod NO
NO.
Quanity
Unit
建檔日: 2002/02/08 2002/09/26修正日:
Page 1 of 1
2002/10/29
A-X34-ALTO-230V1 1.000 PCS
A-X34 底板組合2 1.000 PCS
P-XPWR3 1.000 PCS
P-SCX234IO-DIP(CH1)4 1.000 PCS
P-SCX234IO-DIP(CH2)5 1.000 PCS
P-X34(M)-SMD6 2.000 PCS
P-X34(M)-DIP7 2.000 PCS
7. Electrical Parts List

Page 1 of 3
2002/10/29
X34-ALTO-230V
Mid No: A-X34-ALTO-230V standard quantity: 1.000
X34 AMPItem No: specify:
Item Name SpecificNO Material No UnitQuanity Ps
panel(white)
1
MFR399ZZ
MARK:
PCS
1.000
X34
top cover-printing
2
MTP229ZZ
MARK:
PCS
1.000
CLE2.0
rear board (spray black-paint)
3
MBK321ZZ
MARK:
PCS
1.000
X34
fuse(T)
4
HD00021
MARK:
PCS
1.000
100mA 250V φ5*20mm CSA/S/UL/VDE
loop transformer
5
TP3055
MARK:
PCS
1.000
PT-SCX34
AC outlett
6
HCSA16
MARK:
PCS
1.000
(S)315-B (AC select)
7
NPL287
MARK:
PCS
6.000
φ3*W6*18.3 black ABS
label
8
NMLZ779
MARK:
1.000
SCL-2020 black/white
row-wire connector wiring
9
HLSF129
MARK:
PCS
2.000
3P-3P 200m/m
signle terminal wiring CF:W146
10
HLSC146
MARK:
PCS
1.000
green/yellow 80m/m
single terminal wiring CF:W76
11
HLSC76
MARK:
PCS
1.000
green/yellow 150m/m
plastic knob double φ11*17.5
12
NMBP64
MARK:
PCS
12.000
COOL GRAY 8C
cover
13
NPL272
MARK:
PCS
12.000
φ8.5*4 blue 072C
black plated screw
14
MSCB28
MARK:
PCS
14.000
flat self 3*4
black plated screw
15
MSCB34
MARK:
PCS
2.000
pill 3*6
電源開關
black plated screw
16
MSCB38
MARK:
PCS
4.000
3*7
面板
black-plated screw
17
MSCB13
MARK:
PCS
10.000
cross-head pan head 3*6
上蓋,后板
black plated screw
18
MSCB35
MARK:
PCS
2.000
cross-head pan head 3*10
AC座
black plated screw
19
MSCB58
MARK:
PCS
16.000
iron-board pill 3*10
平衡座
colour nut
20
MSTC04
MARK:
PCS
1.000
4m/m
地線
washer
21
MFSS04
MARK:
PCS
1.000
φ4*φ7*1t
地線
washer
22
MFST01
MARK:
PCS
2.000
φ4*φ8*0.5t
地線
colour nut
23
MSTC03
MARK:
PCS
2.000
3m/m
PT
washer
24
MFSC09
MARK:
PCS
2.000
φ3*φ10*1t
PT
cable tie(black)
25
NMCR01
MARK:
PCS
10.000
ALT-102SB

Page 2 of 3
2002/10/29
X34-ALTO-230V
Mid No: A-X34-ALTO-230V standard quantity: 1.000
X34 AMPItem No: specify:
Item Name SpecificNO Material No UnitQuanity Ps
self-paste foot pad(SF-004)
26
NLXM39
MARK:
PCS
4.000
12.7*9.0*3.0t
P.V.C wiring
27
HLSP164
MARK:
PCS
1.000
UL1617 AWG22 250mm black
P.V.C single wave wired
28
HLSP71
MARK:
PCS
1.000
UL1617 22AWG 80m/m brown
power cord
29
HLSA31
MARK:
PCS
1.000
Europe 3P LT-312+LT-501
sleeving flame retardant
30
NMCT20WW0020
MARK:
PCS
8.000
5φ*20m/m
sleeving flame retardant
31
NMCT16WW0010
MARK:
PCS
2.000
2.5φ*10m/m
lockable bag
32
NWCP04
MARK:
PCS
1.000
5*7
PE bag
33
NWCP01WW0300*0580
MARK:
PCS
1.000
30*58cm
desiccant
34
HEM083
MARK:
1.000
30g
alimentation SW
35
HSWA13
MARK:
PCS
1.000
SDDLB 1007U
L.E.D
36
DL43RG
MARK:
PCS
1.000
LG2043 green
switch cap
37
NPL285
MARK:
PCS
1.000
φ6*2.5 YELLOW C
power push button
38
NMBA02
MARK:
PCS
1.000
φ15*17
row-wire connecting wiring
39
HLSF160
MARK:
PCS
1.000
2P 230mm
box
40
NB01720
MARK:
PCS
1.000
ALTO 19"系列
sponge barrier
41
PKMS153
MARK:
PCS
1.000
ALTO 19"
barrier
42
PKMS156
MARK:
PCS
1.000
ALTO19"
paper outter case 4 hole
43
POA182
MARK:
PCS
0.250
ALTO 19"
label
44
NMLB1586-05ZZ
MARK:
2.000
X34 ALTO
instruction
45
NMCQA-327
MARK:
1.000
X34 ALTO
power push button
46
NMBA07
MARK:
PCS
7.000
header wiring BF:W292
47
HLSB292
MARK:
PCS
1.000
2P-2P 180m/m
header wiring BF:W311
48
HLSB311
MARK:
PCS
2.000
3P-3P 180
row-wire connecting wiring
49
HLSF386
MARK:
PCS
2.000
4P-4P 180
row-wire connecting wiring
50
HLSF387
MARK:
PCS
2.000
7P-7P 180

Page 3 of 3
2002/10/29
X34-ALTO-230V
Mid No: A-X34-ALTO-230V standard quantity: 1.000
X34 AMPItem No: specify:
Item Name SpecificNO Material No UnitQuanity Ps
jumper wire
51
MMCJ15
MARK:
PCS
1.000
16m/m
L.E.D high intensity
52
DL37RR
MARK:
PCS
6.000
3m/m round(red)long foot 26mm
row-wire connecting wiring
53
HLSF384
MARK:
PCS
2.000
8P-6P 120
assurance book
54
NMCQ-073
MARK:
1.000
ALTO
label
55
NMLM379ZZ
MARK:
4.000
X34
label
56
NE05004
MARK:
4.000
ALTO
label
57
NMLH31
MARK:
2.000
MADE IN P.R.C.
box
58
NA00154
MARK:
PCS
2.000
ALTO
power switch
59
NI02085
MARK:
PCS
1.000
φ22*9.69

Page 1 of 1
2002/10/29
X34-ALTO-230V
Mid No: A-X34 底板組合 standard quantity: 1.000
X34 AMPItem No: specify:
Item Name SpecificNO Material No UnitQuanity Ps
bottom rear plate
1
MBT321ZZ
MARK:
PCS
1.000
X34
iron pillar
2
MMC013
MARK:
PCS
2.000
hexagon 6.35*M3*6
iron pillar
3
MMC014
MARK:
PCS
4.000
hexagon 6.35*M3*9.2
screw pillar
4
MSC023
MARK:
PCS
1.000
M4*10*0.7PH
5
MSC030
MARK:
PCS
2.000
M3*10*0.5PH
fixed board (black)
6
MSDE35ZZ
MARK:
PCS
1.000
X23
barrier (black)
7
MSDE34ZZ
MARK:
PCS
1.000
X23
L-shape fixed bracket
8
MAPR80ZZ
MARK:
PCS
1.000
1.2*28*20*10(CLE2.0)
iron pillar
9
ME00050
MARK:
PCS
8.000

Page 1 of 1
2002/10/29
X34-ALTO-230V
Mid No: P-XPWR standard quantity: 1.000
X34 AMPItem No: specify:
Item Name SpecificNO Material No UnitQuanity Ps
PCB
1
NPC0106
MARK:
PCS
1.000
XPWR(1*4)
1/8W fixed resistor
2
RFC212S
MARK:
R
PCS
1.000
1.2KΩ S type
1
ceramic capacitor
3
CC410F
MARK:
C
PCS
4.000
0.1uF SL
4 5 8 9
electrolytic capacitor
4
CE747E
MARK:
C
PCS
2.000
470/25V
6 7
electrotytic capacitor
5
CE822F
MARK:
C
PCS
2.000
2200/35V φ16*31.5mm
18 19
bridge rectifier
6
DB001A
MARK:
DB
PCS
1.000
RB154 1A/400V
1
integrated circuit
7
SIC717
MARK:
IC
PCS
1.000
7815
1
integrated circuit
8
SIC719
MARK:
IC
PCS
1.000
7915
2
row-wire header
9
HCSI0203
MARK:
CN
PCS
2.000
3P 2.5mm 180°
2 3
row-wire header
10
HCSI0202
MARK:
CN
PCS
1.000
2P 2.5mm 180°
4
row-wire header
11
HCSR0203
MARK:
CN
PCS
1.000
3P 3.96mm 180°
1
silicone insulator
12
STR802-T2
MARK:
2.000
TO-220 square type
heat sink
13
MHL013
MARK:
PCS
2.000
MA103*25m/m*2PIN
washer
14
MFSS03
MARK:
PCS
2.000
φ3*φ5*1t
Ni screw
15
MSCN16
MARK:
PCS
2.000
pill 3*6 thin tooth P0.5