Alto_DI1_Service_Manual.pdf

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Service Manual
Model: DI1
DIRECT INJECT BOX
www.altoproaudio.com
Version: 1.1
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 (DI1)
Inputs
Input Impedance
Maximum Input level
Output
Load Impedance
Maximum Output Level
System specifications
Bandwidth(100kOhm)
Bandwidth(600Ohm)
Bandwidth(High Cut)
10Hz to 200Khz(¡Ó3dbm)
10Hz to 45Khz(¡Ó3dbm)
10Hz to 8Khz(¡Ó3dbm)
1/4” jack unbal. In/ Link Out
XLR unbalanced In
max 220 kOhm
+2/+22/+42 dBm
XLR balanced Out
>600 Ohm
+6 dBm
Noise Level
THD+N @ 1 kHz / 1 dBm
Power supply
-105 dBm
< 0.01 %
Phantom power 18 V DC to 48 V DC
Battery 9 V blockcell 6LR91
Dimensions 128 mm x 123.5 mm x 44.2 mm
Weight ca. 0.8Kg
1
2
3
4
2.Block Diagram
D
D
INPUT
LED1
LED CONTROL
IC1
PHANTOM POWER
STEP-DOWN CONVERTER
4
2
3
1
CN2
XLMN-3PH
C
INPUT
T1
SW3
-20dB ATTENUATION
SW1
8KHz HIGH CUT
3c
4d
2b
1a
OUTPUT
SW4
PHASE
2
3
1
C
5e
CN3
CN-JY6351G-02
SW2
-20dB ATTENUATION
LINK
SW6
BATTERY POWER
3c
4d
2b
1a
SW5
GND LIFT
5e
BATTERY +9V
CN4
CN-JY6351G-02
B
B
A
Titel
DI1 BLOCK DIGRAM
Size
A4
Date:
File:
2
3
A
Model No:
Revision
DI1
15-Jun-2002
V1.0
DI1 DIGRAM.Sch
Sheet 1
Drawn By:
4
of 1
TASY J.S.
1
1
2
3
4
D1
R4
4K7
4148
ZD1
11V
GND2
R5
24K
GND2
C10
470uF
GR
LED1
D
D
C9
100n
GND2
R2
47R
CN1
10P-2.0
3. Schematic Diagram
GND2
+VCC
R1
470K
R15
47K
R16
120K
GND2
2
1
3
C3
100u/25v
GND2
GND2
IC1A
2068
R19
16K
C5
100n
SW1
PS-22E85L
R3
47R
R13
100K
R14
16K
R11 R12
1M 100K
C2
100u/25v
(8KHZ HIGH CUT)
1
2
3
4
5
6
7
8
9
10
R7
470K
C4
100n
C
SW2
PS-22E85L
R8
51K
SW3
PS-22E85L
1
2
3
4
5
6
R18
47K
R17
47K
Q1
BR
C
C1
0.47/50V
GND2
R6
51K
( -20dB )
( -20dB )
GND2
GND2
GND2
SW5
PS-22E85L
C6
153 (M)
D3
FM103
8
D4
4148
D7
4148
C8
470/16V
6
B
B
CN2
DC +9V
GND2
D2
FM103
C7
100u/25v
7
IC1C
2068
5
4
(PHASE)
SW4
PS-22E85L
( GND LIFT )
SW6
DC-POWER
D5
4148
IC1B
2068
D6
4148
R20
47R
GND2
GND2
GND2
GND2
GND2
R21
33R
A
Titel
DI1FP
Size
A4
Date:
File:
2
3
A
Model No:
Revision
DI1
15-Jun-2002
V1.0
DI1FP.Sch
Sheet 1
Drawn By:
4
of 1
TASY J.S.
1

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