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Alto DI 4 - II Service Manual

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MODEL: DI 4 - II
www.altoproaudio.com
Version 1.0
Revised on Jan,2010

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Summary of Contents for Alto DI 4 - II

  • Page 1 MODEL: DI 4 - II www.altoproaudio.com Version 1.0 Revised on Jan,2010...

  • Page 2: Table Of Contents

    CONTENTS 1. Introduction..........................1 2. Specification..........................2 3. Block Diagram..........................3 4. Schematic Diagram........................4 5. Wiring Diagram........................6 6. PCB Layout..........................7 7. Exploded View & Mechanical Parts List..................15 8. BOM List..........................17...

  • Page 3: Introduction

    1. Introduction DI stands for "Direct Injection" and DI Boxes are also called Direct Boxes. You need to use Direct Boxes if you wish to convert a high impedance instrument signal or an unbalanced signal into a format that will be suitable for direct connection into a mixer.

  • Page 4: Specification

    2. Specification 1/4” jack unbal. In/ Link Out Inputs XLR unbalanced In Input Input Impedance max 220 kOhm Maximum Input level +13/+33/+53 dBm Output XLR balanced Out Output Load Impedance >600 Ohm Max Output Level +18 dBm Bandwidth(100kOhm) 23Hz to 105Khz(±3dbm) Bandwidth(600Ohm) 23Hz to 60Khz(±3dbm) System specifications...

  • Page 5: Block Diagram

    3. Block Diagram --- 3 ---...

  • Page 6: Schematic Diagram

    4. Schematic Diagram --- 4 ---...
  • Page 7 --- 5 ---...

  • Page 8: Wiring Diagram

    5. Wiring Diagram --- 6 ---...

  • Page 9: Pcb Layout

    6. PCB Layout --- 7 ---...
  • Page 10 --- 8 ---...
  • Page 11 --- 9 ---...
  • Page 12 --- 10 ---...
  • Page 13 --- 11 ---...
  • Page 14 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) 87mil...
  • Page 15 --- 13 ---...
  • Page 16 --- 14 ---...

  • Page 17: Exploded View & Mechanical Parts List

    7. Exploded View & Mechanical Parts List MODEL No: DI 4-II --- 15 ---...
  • Page 18 Mechanical Parts List Part No Description Specification MA03291 Front panel DI4 ALTO NMBA02 PWR SW button φ15*17 NPL285 PWR SW button cover φ6.5*2.5 YELLOW C NPL275 Light-guided button φ3*W6*18.3 transparent PC NPL325 Light-guided pillar φ3.1*85 NI02099 LED separating slot 7.6*4.5*35.5...

  • Page 19: Bom List

    ALTO PF_V1.2 ├0012 NE07652 label ├0013 NB02164 barrier X23,34,40 ├0014 NB02163 barrier X23,34,40 ├0015 NB02088 carton (1H) ALTO 19"_V1.1 ├0016 NA00279 clip-chain bag 0.04t*100*150mm_V1.0 ├0017 NA00862 PE bag-RS 0.04t*580*300 mm ├0018 NA00137 clip-chain bag ├0019 1.top cover, MG00025 screw-RS M3*6 ├0020...
  • Page 20 Class Part No Description Specification Insert location Remark RA01109 fixed resistor 1/4W 1KΩ R13,R14,R18,R19,R3,R4,R8,R9 │　├0001 HC00111 balance MIC jack 99M-108SP1 CN11,CN3,CN6,CN8 │　├0002 CB00260 electrolytic capacitor 47uF/35V φ5*11mm 2.5mm C19,C2,C22,C7 │　├0003 CB00041 electrolytic capacitor 47uF/50V φ6*11mm C11,C14,C3,C8 │　├0004 CB00206 electrolytic capacitor 220uF/50V 105°C TL φ10*16mm(JAMICON) C12,C15,C4,C9 │　├0005...
  • Page 21 Class Part No Description Specification Insert location Remark RD00282 SMD precise resistor 1/10W 1.00KΩ ±1% 0603 R100,R19,R31,R4,R46,R58,R73,R85 │　│　├0003 RD00284 SMD precise resistor 1/10W 2.21KΩ ±1% 0603 R101,R20,R47,R74 │　│　├0004 RD00396 SMD precise resistor 1/10W 1.15KΩ ±1% 0603 R35,R62,R8,R89 │　│　├0005 RD00397 SMD precise resistor 1/10W 4.22KΩ...