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LTO DI1 Service Manual

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Service Manual
Model: DI1
DIRECT INJECT BOX
www.altoproaudio.com
Version: 1.1

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Summary of Contents for LTO DI1

  • Page 1 Service Manual Model: DI1 DIRECT INJECT BOX www.altoproaudio.com Version: 1.1...

  • Page 2: Table Of Contents

    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...

  • Page 3: Specification

    1. SPECIFICATIONS (DI1) Inputs 1/4” jack unbal. In/ Link Out XLR unbalanced In Input Impedance max 220 kOhm Maximum Input level +2/+22/+42 dBm Output XLR balanced Out Load Impedance >600 Ohm Maximum Output Level +6 dBm System specifications Bandwidth(100kOhm) 10Hz to 200Khz(±3dbm) Bandwidth(600Ohm) 10Hz to 45Khz(±3dbm)

  • Page 4: Block Diagram

    2.Block Diagram...

  • Page 5: Schematic Diagram

    3. Schematic Diagram...
  • Page 7 4.Printed Circuit Diagram DI1FP PCB LAYOUT PCB : DI1FP Top Layer PCB : DI1FP Top Solder Mask PCB : DI1FP Top Overlay PCB : DI1FP Bottom Layer...
  • Page 8 PCB : DI1FP Bottom Solder Mask PCB : DI1FP Bottom Overlay PCB : DI1FP Drill Drawing Plots Hole Size Hole Count 24mil (0.6mm) 31mil (0.8mm) 35mil (0.9mm) 39mil (1.0mm) 138mil (3.5mm) Totals...
  • Page 9 DI1PU PCB LAYOUT PCB : DI1PU Top Layer PCB : DI1PU Bottom Layer PCB : DI1PU Top Solder Mask PCB : DI1PU Bottom Solder Mask PCB : DI1PU Top Overlay PCB : DI1PU Bottom Overlay...
  • Page 10 Hole Size Hole Count 24mil (0.6mm) 31mil (0.8mm) 35mil (0.9mm) 39mil (1.0mm) 47mil (1.2mm) 63mil (1.6mm) 126mil (3.2mm) 150mil (3.8mm) 197mil (5.mm) Totals PCB : DI1PU Drill Drawing Plots...
  • Page 11 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 14: Wiring Diagram

    5. Wiring Diagram...

  • Page 15: Test Procedure

    6. Test Procedure Adjustments (Please follow the instructions to test.) 1. Setting 1 Settings: 1. AP: set same as left features。 Test: 1.LEVEL: Keep it at the range of +5dBm±1dBm 2.Distortion: 0.01%(+0.005%)。...
  • Page 16 2. Setting 2. Setting: 1. Set AP OUTPUT in OFF mode. Test : 1. Noise Level -105 Bm(±3dBm)
  • Page 17 3. Test 3 Settings: 1. AP: Set as the left features. 2. RED Curve shows when all functions are at “OFF” mode, and the setting for AP output impedance is 100K 3. CYAN Curve shows when all functions are at “OFF” mode, and the setting for AP output impedance is 600Ω...
  • Page 18 (3) GND (Ground) LIFT button is to separate output and input ground. 2. Phantom power test (1) aMICTUBE (PHANTOM +48V) can be used to test that if the wire assemblies of DI1, PIN 9, pass through voltage on 8.5V±0.5V or not.

  • Page 19: Electrical Parts List

    7. Electrical Parts List Page 1 of 1 DI1-ALTO 2002/10/26 Structure Needing Material Detail List 建檔日: 2002/07/06 修正日: 2002/08/09 Midprod NO Quanity Unit A-DI1-ALTO 1.000 A-DI1-底板組合 1.000 A-DI1-前板組合 1.000 P-DI1FP-SMD 1.000 P-DI1FP-DIP 1.000 P-DI1PU-SMD 1.000 P-DI1PU-DIP 1.000 P-DI4IN(DI1) 1.000...
  • Page 20 DI1-ALTO 2002/10/26 Page 1 of 1 Item No: specify: Mid No: A-DI1-ALTO standard quantity: 1.000 Quanity Unit Material No Item Name Specific 1 MA03379 panel DI1 ALTO 1.000 MARK: 2 MC00424 top cover 1.000 MARK: 3 MB02312 rear board 1.000...
  • Page 21 DI1-ALTO 2002/10/26 Page 1 of 1 Item No: specify: Mid No: A-DI1-底板組合 standard quantity: 1.000 Quanity Unit Material No Item Name Specific 1 MI01409 barrier 1.000 MARK: 2 MB02316 rear board 1.000 MARK: 3 MMC013 iron pillar hexagon 6.35*M3*6 1.000...
  • Page 22 DI1-ALTO 2002/10/26 Page 1 of 1 Item No: specify: Mid No: A-DI1-前板組合 standard quantity: 1.000 Quanity Unit Material No Item Name Specific 1 MI01406 front board 1.000 MARK: 2 MMC013 iron pillar hexagon 6.35*M3*6 4.000 MARK:...
  • Page 23 DI1-ALTO 2002/10/26 Page 1 of 1 Item No: specify: Mid No: P-DI1FP-SMD standard quantity: 1.000 Quanity Unit Material No Item Name Specific 1 HB00706 PC board DI1FP(1*4)_VER020502 1.000 MARK: 2 RD00368 resistor 16.5KΩ ±1% 0603 2.000 MARK: R 14 19...
  • Page 24 DI1-ALTO 2002/10/26 Page 1 of 1 Item No: specify: Mid No: P-DI1FP-DIP standard quantity: 1.000 Quanity Unit Material No Item Name Specific 1 CE447G electrotytic capacitor 0.47/50V ψ4*7 1.000 MARK: C 2 CE710E electrotytic capacitor 100/25V 3.000 MARK: C 2 3 7...
  • Page 25 DI1-ALTO 2002/10/26 Page 1 of 1 Item No: specify: Mid No: P-DI1PU-SMD standard quantity: 1.000 Quanity Unit Material No Item Name Specific 1 HB00707 PC board DI1PU(1*4)_VER020624 1.000 MARK: 2 RPCA1118 SMD 1/10W precise resistor 1.18KΩ ±1% 0603 1.000 MARK: R...
  • Page 26 DI1-ALTO 2002/10/26 Page 1 of 1 Item No: specify: Mid No: P-DI1PU-DIP standard quantity: 1.000 Quanity Unit Material No Item Name Specific 1 DZA15V zener diode 1/2W 15V 15B3 1.000 MARK: D 2 CN00038 inductance 220uH(LGA0307-221K) 1.000 MARK: L 3 CE710E...
  • Page 27 DI1-ALTO 2002/10/26 Page 1 of 1 Item No: specify: Mid No: P-DI4IN(DI1) standard quantity: 1.000 Quanity Unit Material No Item Name Specific 1 HB00712 PC board DI4IN(1*24)_VER020624 1.000 MARK: 2 HC00125 MIC jack JY-6351G-02-250 2.000 MARK: CN...
  • Page 28 8. Exploded Views...