Alto DI4 User manual

ServiceManual
www.altoproaudio.com
Version: 1.1
Model: DI4
4-CH DIRECT INJECT BOX

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

1. SPECIFICATIONS (DI4)
Inputs 1/4” jack unbal. In/ Link Out
XLR unbalanced In
Input Impedance max 220 kOhm
Maximum Input level +13/+33/+53dBm
Output XLR balanced Out
Load Impedance >600 Ohm
Max Output Level +18 dBm
System specifications
Bandwidth(100kOhm) 23Hz to 105Khz(±3dbm)
Bandwidth(600Ohm) 23Hz to 60Khz(±3dbm)
Bandwidth(High Cut) 23Hz to 8Khz(±3dbm)
Noise Level -105dBm
THD+N @ 1 kHz / 10 dBm< 0.01 %
Power supply
Connector type 3-pole IEC,grounded
Type Servo controlled,stabilized
Mains supply 115V or 230V 50/60Hz
Power Rating max. 10W
Fuse 100-120V~: T200mA H
200-240V~: T100mA H
Dimensions 483 mm x 197.5 mm x 44.2 mm
Weight ca. 3.7 Kg

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DI4 DIGRAM.Sch
Titel Size File: Date: Drawn By:
Sheet
RevisionModel No:
28-Oct-2002 TASY J.S.
DI4 BLOCK DIGRAM
11 of
DI4 V1.0
A3
CH1
2 1 3 4
CN12
INPUT
3c 5e 1a 4d 2b
INPUT 3c
5e 1a 4d 2b
LINK
SW23
-20dB ATTENUATION SW24
-20dB ATTENUATION
LED CONTROL
SW19
8KHz HIGH CUT 2
1 3
OUTPUTT4 SW22
PHASE
SW21
GND LIFT
SW20
+20dB gain
CH2
2 1 3 4
CN9
INPUT
3c 5e 1a 4d 2b
INPUT 3c
5e 1a 4d 2b
LINK
SW17
-20dB ATTENUATION SW18
-20dB ATTENUATION
LED CONTROL
SW13
8KHz HIGH CUT 2
1 3
OUTPUTT3 SW16
PHASE
SW15
GND LIFT
SW14
+20dB gain
CH3
2 1 3 4
CN2
INPUT
3c 5e 1a 4d 2b
INPUT 3c
5e 1a 4d 2b
CN4 LINK
SW11
-20dB ATTENUATION SW12
-20dB ATTENUATION
LED CONTROL
SW7
8KHz HIGH CUT 2
1 3
OUTPUTT2 SW10
PHASE
SW9
GND LIFT
SW8
+20dB gain
CH4
2 1 3 4
CN5
INPUT
3c 5e 1a 4d 2b
INPUT 3c
5e 1a 4d 2b
LINK
SW5
-20dB ATTENUATION SW6
-20dB ATTENUATION
LED CONTROL
SW1
8KHz HIGH CUT 2
1 3
OUTPUTT1 SW4
PHASE
SW3
GND LIFT
SW2
+20dB gain

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TR5
HR
R68
47K5
R65
1K2
R72
511R
R73
1K00
R74
2K21
R75
4K22
R76
8K06
R78
16K5
R79
33K2
R80
39K2
+VCC-CH1
R66
560R
C26
104P
R67
33K2
5
42
U7A
LM339
1
6
7
U7B
LM339
8
914
U7C
LM339
10
11 13
U7D
LM339
5
42
U8A
LM339
1
6
7
U8B
LM339
8
914
U8C
LM339
10
11 13
U8D
LM339
LD17
GR
LD18
GR
LD19
GR
LD20
GR
LD21
GR
LD22
YEL
LD23
YEL
LD24
RED
+VCC-CH1
R77
22R
-VCC-CH1
C24
47/25V
312
U8E
LM339
312
U7E
LM339
+VCC-CH1 +VCC-CH1
+VCC-CH1
1 2 3 4 5 6 7 8 9 10 11 12
CN3
12P-2.0
-VCC-CH1
SW17
PS-42E85L SW18
PS-42E85L
R60
470K
R69
51K1
R61
470K
R70
51K1
( -20dB ) ( -20dB )
LED15
GR
LED14
GR
SW14
PS-22E85L
(+20dB)
SW16
PS-42E85L
(PHASE)
SW15
PS-22E85L
( GND LIFT )
1
3
4
5
6
2
SW13
PS-22E85L
C27
0.47/50V
(8KHZ HIGH CUT)
LED18
GR
LED17
GR
LED16
GR
LED13
GR
TR6
HR
R64
470R
R63
15K
+VCC-CH1
R71
39K2
DI4FP.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
3-Jul-2002 TASY J.S.
DI4FP
11 of
DI4 V1.0
A2
3
21
U9A
2068M
5
67
U9B
2068M
C21
153(M)
C22
10P
R59
220K
R55
11K
R62
11K
C19
47P
D13
4148
C23
47/25V
+VCC-CH1
D12
4148
R58
1K
84
U9C
2068M
D11
4148
D15
4148
D14
4148
R57
47K5
R56
47K5
+VCC-CH1
C20
470/10V
C25
1/50V
-VCC-CH1
-VCC-CH1
-VCC-CH1
TR7
HR
R95
47K5
R92
1K2
R99
511R
R100
1K00
R101
2K21
R102
4K22
R103
8K06
R105
16K5
R106
33K2
R107
39K2
+VCC-CH1
R93
560R
C35
104P
R94
33K2
5
42
U10A
LM339
1
6
7
U10B
LM339
8
914
U10C
LM339
10
11 13
U10D
LM339
5
42
U11A
LM339
1
6
7
U11B
LM339
8
914
U11C
LM339
10
11 13
U11D
LM339
LD25
GR
LD26
GR
LD27
GR
LD28
GR
LD29
GR
LD30
YEL
LD31
YEL
LD32
RED
+VCC-CH1
R104
22R
-VCC-CH1
C33
47/25V
312
U11E
LM339
312
U10E
LM339
+VCC-CH1 +VCC-CH1
+VCC-CH1
1 2 3 4 5 6 7 8 9 10 11 12
CN4
12P-2.0
-VCC-CH1
SW23
PS-42E85L SW24
PS-42E85L
R87
470K
R96
51K1
R88
470K
R97
51K
( -20dB ) ( -20dB )
LED21
GR
LED20
GR
SW20
PS-22E85L
(+20dB)
SW22
PS-42E85L
(PHASE)
SW21
PS-22E85L
( GND LIFT )
1
3
4
5
6
2
SW19
PS-22E85L
C36
0.47/50V
(8KHZ HIGH CUT)
LED24
GR
LED23
GR
LED22
GR
LED19
GR
TR8
HR
R91
470R
R90
15K
+VCC-CH1
R98
39K2
3
21
U12A
2068M
5
67
U12B
2068M
C30
153(M)
C31
10P
R86
220K
R82
11K
R89
11K
C28
47P
D18
4148
C32
47/25V
+VCC-CH1
D17
4148
R85
1K
84
U12C
2068M
D16
4148
D20
4148
D19
4148
R84
47K5
R83
47K5
+VCC-CH1
C29
470/10V
C34
1/50V
-VCC-CH1
-VCC-CH1
-VCC-CH1
TR3
HR
R41
47K5
R38
1K2
R45
511R
R46
1K00
R47
2K21
R48
4K22
R49
8K06
R51
16K5
R52
33K2
R53
39K2
+VCC-CH1
R39
560R
C17
104P
R40
33K2
5
42
U4A
LM339
1
6
7
U4B
LM339
8
914
U4C
LM339
10
11 13
U4D
LM339
5
42
U5A
LM339
1
6
7
U5B
LM339
8
914
U5C
LM339
10
11 13
U5D
LM339
LD9
GR
LD10
GR
LD11
GR
LD12
GR
LD13
GR
LD14
YEL
LD15
YEL
LD16
RED
+VCC-CH1
R50
22R
-VCC-CH1
C15
47/25V
312
U5E
LM339
312
U4E
LM339
+VCC-CH1 +VCC-CH1
+VCC-CH1
1 2 3 4 5 6 7 8 9 10 11 12
CN2
12P-2.0
-VCC-CH1
SW11
PS-42E85L SW12
PS-42E85L
R33
470K
R42
51K1
R34
470K
R43
51K1
( -20dB ) ( -20dB )
LED9
GR
LED8
GR
SW8
PS-22E85L
(+20dB)
SW10
PS-42E85L
(PHASE)
SW9
PS-22E85L
( GND LIFT )
1
3
4
5
6
2
SW7
PS-22E85L
C18
0.47/50V
(8KHZ HIGH CUT)
LED12
GR
LED11
GR
LED10
GR
LED7
GR
TR4
HR
R37
470R
R36
15K
+VCC-CH1
R44
39K2
3
21
U6A
2068M
5
67
U6B
2068M
C12
153(M)
C13
10P
R32
220K
R28
11K
R35
11K
C10
47P
D8
4148
C14
47/25V
+VCC-CH1
D7
4148
R31
1K
84
U6C
2068M
D6
4148
D10
4148
D9
4148
R30
47K5
R29
47K5
+VCC-CH1
C11
470/10V
C16
1/50V
-VCC-CH1
-VCC-CH1
-VCC-CH1
TR1
HR
R13
47K5
R11
1K2
R18
511R
R19
1K00
R20
2K21
R21
4K22
R22
8K06
R24
16K5
R25
33K2
R26
39K2
+VCC-CH1
R12
560R
C8
104P
R14
33K2
5
42
U1A
LM339
1
6
7
U1B
LM339
8
914
U1C
LM339
10
11 13
U1D
LM339
5
42
U2A
LM339
1
6
7
U2B
LM339
8
914
U2C
LM339
10
11 13
U2D
LM339
LD1
GR
LD2
GR
LD3
GR
LD4
GR
LD5
GR
LD6
YEL
LD7
YEL
LD8
RED
+VCC-CH1
R23
22R
-VCC-CH1
C6
47/25V
312
U2E
LM339
312
U1E
LM339
+VCC-CH1 +VCC-CH1
+VCC-CH1
1 2 3 4 5 6 7 8 9 10 11 12
CN1
12P-2.0
-VCC-CH1
SW5
PS-42E85L SW6
PS-42E85L
R6
470K
R15
51K1
R7
470K
R16
51K1
( -20dB ) ( -20dB )
LED3
GR
LED2
GR
SW2
PS-22E85L
(+20dB)
SW4
PS-42E85L
(PHASE)
SW3
PS-22E85L
( GND LIFT )
1
3
4
5
6
2
SW1
PS-22E85L
C9
0.47/50V
(8KHZ HIGH CUT)
LED6
GR
LED5
GR
LED4
GR
LED1
GR
TR2
HR
R10
470R
R9
15K
+VCC-CH1
R17
39K2
3
21
U3A
2068M
5
67
U3B
2068M
C3
153(M)
C4
10P
R5
220K
R1
11K
R8
11K
C1
47P
D3
4148
C5
47/25V
+VCC-CH1
D2
4148
R4
1K
84
U3C
2068M
D1
4148
D5
4148
D4
4148
R3
47K5
R2
47K5
+VCC-CH1
C2
470/10V
C7
1/50V
-VCC-CH1
-VCC-CH1
-VCC-CH1
(CH4)
(CH3)
(CH1)
(CH2)

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1.GND( ) ..本機的所有 電器 未與外殼連通
2.DC24V( );4, ..工作電壓 穩壓 組獨立供應 互不相連接
3...為鋪銅面
2
1
3
4
CN12
XLMN-3PH 3c
5e
1a
4d
2b
CN-JY6351G-02
3c
5e
1a
4d
2b
CN-JY6351G-02
LINK
CH1 INPUT
C20
100P
R18
1K
R19
1K
C22
47/25V
1 2 3 4 5 6 7 8 9 10 11 12
CN13
12P-2.0
[ RED LINE ]
+VCC-CH1
1
4
2
3
5
T4
OT-DI1
R16
47R L4
220uH
R17
33R 2
1
3
4
CN11
XLR-3MALE
R20
4K7
C21
102P
TR4
78L24
C14
47/50V C15
220/50V
D13
4148
D15
4148
D14
4148 D16 4148
+VCC-CH1
+VCC-CH1 +29VDC
-VCC-CH1
-VCC-CH1
1
2
CN6
AC24V IN
DI4PU.Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
21-Jun-2002 TASY J.S.
DI4PU
11 of
DI4 v1.0
A3
2
1
3
4
CN9
XLMN-3PH 3c
5e
1a
4d
2b
CN-JY6351G-02
3c
5e
1a
4d
2b
CN-JY6351G-02
LINK
CH2 INPUT
C17
100P
R13
1K
R14
1K
C19
47/25V
1 2 3 4 5 6 7 8 9 10 11 12
CN10
12P-2.0
[ RED LINE ]
+VCC-CH1
1
4
2
3
5
T3
OT-DI1
R11
47R L3
220uH
R12
33R 2
1
3
4
CN8
XLR-3MALE
R15
4K7
C18
102P
TR3
78L24
C11
47/50V C12
220/50V
D9
4148
D11
4148
D10
4148 D12 4148
+VCC-CH1
+VCC-CH1 +29VDC
-VCC-CH1
-VCC-CH1
1
2
CN6
AC24V IN
2
1
3
4
CN2
XLMN-3PH 3c
5e
1a
4d
2b
CN-JY6351G-02
3c
5e
1a
4d
2b
CN-JY6351G-02
LINK
CH3 INPUT
C6
100P
R8
1K
R9
1K
C7
47/25V
1 2 3 4 5 6 7 8 9 10 11 12
CN7
12P-2.0
[ RED LINE ]
+VCC-CH1
1
4
2
3
5
T2
OT-DI1
R6
47R L2
220uH
R7
33R 2
1
3
4
CN6
XLR-3MALE
R10
4K7
C10
102P
TR2
78L24
C8
47/50V C9 220/50V
D5
4148
D7
4148
D6
4148 D8 4148
+VCC-CH1
+VCC-CH1 +29VDC
-VCC-CH1
-VCC-CH1
1
2
CN6
AC24V IN
2
1
3
4
CN5
XLMN-3PH 3c
5e
1a
4d
2b
CN-JY6351G-02
3c
5e
1a
4d
2b
CN-JY6351G-02
LINK
(CH4)
C1
100P
R3
1K
R4
1K
C2
47/25V
1 2 3 4 5 6 7 8 9 10 11 12
CN4
12P-2.0
[ RED LINE ]
+VCC-CH1
1
4
2
3
5
T1
OT-DI1
R1
47R L1
220uH
R2
33R
2
1
3
4
CN3
XLR-3MALE
R5
4K7
C5
102P
TR1
78L24
C3
47/50V C4
220/50V
D1
4148
D3
4148
D2
4148 D4 4148
+VCC-CH1
+VCC-CH1 +29VDC
-VCC-CH1
-VCC-CH1
1
2
CN6
AC24V IN
(CH3)
(CH1)
(CH2)
CH4 INPUT
CH3 OUTPUT
CH4 OUTPUT
CH1 OUTPUT
CH2 OUTPUT

4.Printed Circuit Diagram
DI4FP PCB LAYOUT
PCB : DI4FP Top Layer
PCB : DI4FP Top Solder Mask
PCB : DI4FP Bottom Layer
PCB : DI4FP Bottom Solder Mask

PCB : DI4FP Bottom Overlay
PCB : DI4FP Top Overlay
PCB : DI4FP Drill Drawing Plots
Hole Size Hole Count
24mil (0.6mm) 308
31mil (0.8mm) 392
35mil (0.9mm) 48
126mil (3.2mm) 8
Totals 756

DI4FP PCB LAYOUT
PCB : DI4PU Top Overlay
PCB : DI4PU Top Layer
PCB : DI4PU Top Solder Mask

PCB : DI4PU Bottom Overlay
PCB : DI4PU Bottom Layer
PCB : DI4PU Bottom Solder Mask

PCB : DI4PU Drill Drawing Plots
Hole Size Hole Count
24mil (0.6mm) 303
31mil (0.8mm) 80
35mil (0.9mm) 64
39mil (1.0mm) 16
47mil (1.2mm) 6
55mil (1.4mm) 6
59mil (1.5mm) 1
63mil (1.6mm) 21
110mil (2.8mm) 2
Totals 499

DI4IN PCB LAYOUT
PCB : DI4IN Top Layer PCB : DI4IN Top Solder Mask
PCB : DI4IN Top Overlay PCB : DI4IN Bottom Layer
PCB : DI4IN Bottom Solder Mask PCB : DI4IN Drill Drawing Plots
Hole Size Hole Count
24mil (0.6mm) 2
87mil (2.2mm) 10
Totals 12

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B
A
DI4 Wiring Diagram
CN13
CN4
DI4(全).Sch
Titel
Size
File:
Date: Drawn By: Sheet
RevisionModel No:
28-Oct-2002 TASY J.S
DI4 Wiring Diagram
11 of
DI4 V1.0
A4
OT-DI1
DI4PU
AC IN
GND
環型變壓器
PT-DI4
110V
220V
紅
藍
LED
電源開關
CN10
OT-DI1 CN7 OT-DI1 CN4 OT-DI1
CN3 CN2 CN1
DI4FP
CN1CN14

DI4-ALTO-230V-歐規
Structure Needing Material Detail List
Midprod NO
NO.
Quanity
Unit
建檔日: 2002/07/12 2002/08/16修正日:
Page 1 of 1
2002/10/28
A-DI4-ALTO-230V-歐規1 1.000 PCS
A-DI4-前板組合2 1.000 PCS
A-DI4-底板組合3 1.000 PCS
P-DI4FP-SMD4 1.000 PCS
P-DI4FP-DIP5 1.000 PCS
P-DI4PU-SMD6 1.000 PCS
P-DI4PU-DIP7 1.000 PCS
P-DI4IN8 4.000 PCS

Page 1 of 3
2002/10/28
DI4-ALTO-230V-歐規
Mid No: A-DI4-ALTO-230V-歐規 standard quantity: 1.000
DI4 AMPItem No: specify:
Item Name SpecificNO Material No UnitQuanity Ps
panel
1
MA03291
MARK:
PCS
1.000
DI4 ALTO
top cover
2
MC00432
MARK:
PCS
1.000
DI4
rear board
3
MB02203
MARK:
PCS
1.000
DI4
fuse(T)
4
HD00021
MARK:
PCS
1.000
100mA 250V φ5*20mm CSA/S/UL/VDE
AC outlett
5
HCSA16
MARK:
PCS
1.000
(S)315-B (AC select)
push putton
6
NPL275
MARK:
PCS
24.000
φ3*W6*18.3
label
7
NMLZ779
MARK:
1.000
SCL-2020 black/white
LED spacer support
8
NPL325
MARK:
PCS
2.000
φ3.1*85
wire
9
HA02189
MARK:
PCS
2.000
100mm
black plated screw
10
MSCB28
MARK:
PCS
11.000
flat self 3*4
DI4FP, DI4PU
black plated screw
11
MSCB34
MARK:
PCS
2.000
pill 3*6
電源開關
black plated screw
12
MSCB38
MARK:
PCS
4.000
3*7
面板
black-plated screw
13
MSCB13
MARK:
PCS
14.000
cross-head pan head 3*6
上蓋,後板,前板
black plated screw
14
MSCB35
MARK:
PCS
2.000
cross-head pan head 3*10
AC座
black plated screw
15
MSCB58
MARK:
PCS
16.000
iron-board pill 3*10
平衡座
black-plated screw
16
MSCB64
MARK:
PCS
1.000
4*35
PT
colour nut
17
MSTC04
MARK:
PCS
2.000
4m/m
地線, PT
washer
18
MFSS04
MARK:
PCS
2.000
φ4*φ7*1t
地線,PT
washer
19
MFST01
MARK:
PCS
2.000
φ4*φ8*0.5t
地線
cable tie(black)
20
NMCR01
MARK:
PCS
4.000
ALT-102SB
self-paste foot pad(SF-004)
21
NLXM39
MARK:
PCS
4.000
12.7*9.0*3.0t
P.V.C wiring
22
HLSP164
MARK:
PCS
1.000
UL1617 AWG22 250mm black
P.V.C single wave wired
23
HLSP71
MARK:
PCS
1.000
UL1617 22AWG 80m/m brown
power cord
24
HLSA31
MARK:
PCS
1.000
Europe 3P LT-312+LT-501
sleeving flame retardant
25
NMCT20WW0020
MARK:
PCS
8.000
5φ*20m/m
AC座,開關

Page 2 of 3
2002/10/28
DI4-ALTO-230V-歐規
Mid No: A-DI4-ALTO-230V-歐規 standard quantity: 1.000
DI4 AMPItem No: specify:
Item Name SpecificNO Material No UnitQuanity Ps
sleeving flame retardant
26
NMCT16WW0010
MARK:
PCS
2.000
2.5φ*10m/m
lockable bag
27
NWCP04
MARK:
PCS
1.000
5*7
PE bag
28
NWCP01WW0300*0580
MARK:
PCS
1.000
30*58cm
desiccant
29
HEM083
MARK:
1.000
30g
alimentation SW
30
HSWA13
MARK:
PCS
1.000
SDDLB 1007U
L.E.D
31
DL43RG
MARK:
PCS
1.000
LG2043 green
switch cap
32
NPL285
MARK:
PCS
1.000
φ6*2.5 YELLOW C
power push button
33
NMBA02
MARK:
PCS
1.000
φ15*17
box
34
NB01720
MARK:
PCS
1.000
ALTO 19"系列
sponge barrier
35
PKMS153
MARK:
PCS
1.000
ALTO 19"
barrier
36
PKMS156
MARK:
PCS
1.000
ALTO19"
paper outter case 4 hole
37
POA182
MARK:
PCS
0.250
ALTO 19"
MIC stand nut
38
ME00060
MARK:
PCS
8.000
JY-6351G-02-250
mic stand washer
39
MF00061
MARK:
PCS
8.000
JY-6351G-02-250
row-wire connecting wiring
40
HLSF160
MARK:
PCS
1.000
2P 230mm
rubber coil
41
NLXC07
MARK:
PCS
2.000
φ20*φ60*2tB
assurance book
42
NMCQ-073
MARK:
1.000
ALTO
box
43
NA00154
MARK:
PCS
2.000
ALTO
power switch
44
NI02085
MARK:
PCS
1.000
φ22*9.69
46
MI01424
MARK:
PCS
1.000
φ75.5*35.2(DI4)
instruction
47
NF00966
MARK:
PCS
1.000
DI4 ALTO
transformer
48
TD00107
MARK:
PCS
1.000
PT-DI4
label
49
NE06318
MARK:
2.000
DI4 ALTO
label
50
NE05004
MARK:
4.000
ALTO
label
51
NE07652
MARK:
4.000
DI4

Page 3 of 3
2002/10/28
DI4-ALTO-230V-歐規
Mid No: A-DI4-ALTO-230V-歐規 standard quantity: 1.000
DI4 AMPItem No: specify:
Item Name SpecificNO Material No UnitQuanity Ps
LED separating pillar
52
NPL278
MARK:
PCS
0.780
7.6*4.5*184

Page 1 of 1
2002/10/28
DI4-ALTO-230V-歐規
Mid No: A-DI4-前板組合 standard quantity: 1.000
DI4 AMPItem No: specify:
Item Name SpecificNO Material No UnitQuanity Ps
front board
1
MI01365
MARK:
PCS
1.000
DI4
iron pillar
2
MMC013
MARK:
PCS
8.000
hexagon 6.35*M3*6