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Alto DIGAN2.7 Service Manual

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MODEL:DIGAN2.7
www.altoproaudio.com
Version 1.0

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Summary of Contents for Alto DIGAN2.7

  • Page 1 MODEL:DIGAN2.7 www.altoproaudio.com Version 1.0...

  • Page 2: Table Of Contents

    CONTENT 1. Introduction…………………………………………………………………….1 2. Specification…………………………………………………………………...2 3. Block Diagram…………………………………………………………………3 4. Schematic Diagram…………………………………………………………...4 5. Wiring Diagram………………………………………………………………...9 6. PCB Layout……………………………………………………………………10 7. Test Procedure………………………………………………………………..17 8. Exploded View & Mechanical Parts List………………………………….20 9. BOM……………………………………………………………………………..22...

  • Page 3: Introduction

    1. Introduction 1. Digital control and DSP technology with graphic display 7 bands Graphic or Parametric equalization. 2. Dynamic range processing with Ratio, Threshold, Attack and Release time control. 3. Tone adjustment with Bass and Treble control. 4. 100 presets: 30 factory presets and 70 user-programmable presets. 5.

  • Page 4: Specification

    2. Technical Specification System Parametric Band 2×7 bands, 4/3octave Bandwidth 20Hz-20kHz 0.015%, Analog In to Analog Out THD+N% 90dB A-Weighted, Analog In to Analog Out Signal to noise ratio Input gain +/-12dB Output gain +/-6dB Preset Factory preset: 30, User preset: 70 Input section Inputs Two 1/4"...

  • Page 5: Block Diagram

    3. Block Digram Hardware: (1)Front panel : LED , UP/DOWN , LINK/EXIT,BYPASS (2)DSP board : TAS3004+MCU(motorola)+EEPROM Wiring Block Digram : TAS3004 EEPROM F r o n t P a n e l DIGAN 2.7 Surface Digram: (The LED panel can display the Gain value of each BAND and the setting)

  • Page 6: Schematic Diagram

    4. Schematic Diagram...

  • Page 11: Wiring Diagram

    5. Wiring Diagram...

  • Page 12: Pcb Layout

    6. PC B Layout...
  • Page 13 DRILL DRAWING...
  • Page 14 :VER050511 PCB : DIGAN214CPU Bottom Layer PCB : DIGAN214CPU Top Layer PCB : DIGAN214CPU Top Overlay PCB : DIGAN214CPU Solder Mask PCB : DIGAN214CPU PCB : Bottom Solder Mask DIGAN214CPU Drill Drawing...
  • Page 15 VER050511 Tool Hole Size Hole Count Plated Tool Travel --------------------------------------------------------------------------- 20mil (0.508mm) 97.21 Inch (2469.09 mm) 31mil (0.7874mm) 66.58 Inch (1691.22 mm) 36mil (0.9144mm) 70.50 Inch (1790.76 mm) 40mil (1.016mm) 70.05 Inch (1779.18 mm) 126mil (3.2004mm) 74.69 Inch (1897.00 mm) --------------------------------------------------------------------------- Totals 379.03 Inch (9627.27 mm)
  • Page 16 :VER050306 PCB : DIGAN207-INOUT Bottom Layer PCB : Top Solder Mask DIGAN207-INOUT PCB : Bottom Solder Mask DIGAN207-INOUT PCB : DIGAN207-INOUT Top Overlay PCB : DIGAN207-INOUT Top Layer...
  • Page 17 版次: VER050306 Tool Hole Size Hole Count Plated Tool Travel --------------------------------------------------------------------------- 20mil (0.508mm) 22.25 Inch (565.15 mm) 31mil (0.7874mm) 30.47 Inch (773.85 mm) 35mil (0.889mm) 6.55 Inch (166.26 mm) 39mil (0.9906mm) 19.73 Inch (501.10 mm) 43mil (1.0922mm) 11.21 Inch (284.74 mm) 47mil (1.1938mm) 5.73 Inch (145.61 mm) 51mil (1.2954mm)
  • Page 18 版次: VER050306 PCB : DIGAN207-INOUT...

  • Page 19: Test Procedure

    22Hz~22 kHz. Part 1 Functional Switch Test 1. Connect AC9V/300mA voltage adapter to DIGAN2.7. When the power switch is in the ON position, LED indicates ‘’D27”. Press POWER button, now it is in the standby mode. It is 0dBu input and 0dBu output of the AP instrument.
  • Page 20 0dBu+1dBu. THD+N value 0.03%. The diagram of Frequency Response is as Figure 1. 2. Test the Output noise of L/R channel of DIGAN2.7, the value -85dBu. The diagram of Output noise is as Figure 2. 3. Test the S/N value of L/R channel in DIGAN2.70. It is...
  • Page 21 1. Open DIGAN control program in the computer (as figure 1), then click the new icon (as the arrow indicating). 2. Select the corresponding program. If it is the DIGAN2.7, please select the first one (as the arrow indicating in figure 2).

  • Page 22: Exploded View & Mechanical Parts List

    8. Exploded Views & Mechanical Parts list...
  • Page 23 T-plastic nut-HC00108(accessory) HK05626 PCB semi-finished product P-DIGAN207-INOUT-DIP MC00661 ZB- cover DIGAN 2.7_V1.0 MI02548 ZC-front panel fixed bracket -5063blue DIGAN2.30 left L-shape ALTO_V1.0 MI02549 DIGAN2.7 right L-shape_V1.0 ZC-front panel fixed bracket -5063blue MG00021 Black-plated screw-flat M4*6 NI00501 self-adhere foot cushion 12.7*9*3t(SF-004)

  • Page 24: Bom

    RKB-2 L type AE00046 solvent solvent AE00284 painting-AC#100 5063 blue MI00597 fixed bracket RKB-2 L type_V1.0 MI02549 fixed bracket DIGAN2.7 right Ltype_V1.0 MI03128 fixed bracket RKB-2 L type AE00046 solvent solvent AE00284 painting-AC#100 5063 blue MI00597 fixed bracket RKB-2 L type_V1.0 7/16"*G20/15*4.8(hexagon)
  • Page 25 Specification Remark NH00334 cone paper 0.040*1m NE13915 label DIGAN2.7_V1.0 NI00014 membrane 0.035*1M NH00012 bond paper 0.04*1M NB03678 gift carton DIGAN2.7 ALTO_V1.0 NA00380 silk wadding DIGAN2.30 right_V1.0 NA00381 silk wadding DIGAN2.30 left_V1.0 NB03806 carton DIGAN2.70 ALTO_V1.0 TG00023 adaptor 230V/50Hz_AC9V/300mA_ET-35_CE HJ00006 desiccant...
  • Page 26 Part No. Description Specification Remark 47uF/16V CASE6.3 CJ00008 SMD AL electrolytic capacitor RD00093 SMD fixed resistor 1/10W 4.7K ±5% 0603 R4,R6,R18,R19,R20,R21,R22,R23,R24,R25, R35,R36,R37 ±5% 0603 RD00355 SMD fixed resistor 1/10W CI00056 SMD ceramic capacitor 0603 56PF/50V NPO ±5% ±5% 0603 RD00346 SMD fixed resistor 1/10W SG00025 SMD integrated circuit 24LC64I/SN SG00229 SMD integrated circuit...
  • Page 27 Part No. Description Specification Remark HK05626 PC board P-DIGAN207-INOUT-DIP SE00055 SMD L.E.D green 19-21SYGC/S530-E3/TR8 L7,L20,L39,L40,L65,L66,L91,L92,L111,L130, L131,L156,L157,L176 SF00004 SMD transistor 2SA1036K(SOT-23)/(R) Q1,Q2,Q3,Q4,Q5,Q6,Q7,Q8,Q9,Q10,Q11, Q12,Q13,Q14,Q15,Q16 HL00004 push button switch-RS 6*3.8*2.5mm TRAVEL=0.25 S1,S2,S3,S4,S5,S6,S7,S8,S9,S10,S11,S12, S13,S14,S15,S16,S17,S18,S19,S20 SE00004 SMD L.E.D yellow 67-21UYC/S530-A2/TR8 1210 L183,L184,L186,L187 1000uF/10V 8*11mm CB00074 electrolytic capacitor SA00094 rectifier diode...
  • Page 28 L1,L2,L4,L5,L6,L7,L8,L9,L10,L15,L18,L19 SG00118 SMD integrated circuit MC33079DT(ST)MC33079D(ON) IC7,IC8 AE00221 tin soldering paste SJ-617 5.62K ±1% 0603 RD00365 SMD precise resistor 1/10W R5,R7,R42,R44 SF00056 transistor MMBT3904(SOT-23)/(PHI) TR3,TR4 NF02233 user manual English DIGAN2.7 ALTO_V1.0 NH00149 paper 889*640mm NI03353 silicone sleeve DIGAN 2.7 5.6*3.2*56_V1.0...

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