Download
Share
Print this page
Alto SR500A Service Manual
  1. Manuals
  2. Brands
  3. Alto Manuals
  4. Speakers
  5. SR500A
  6. Service manual

Alto SR500A Service Manual

Hide thumbs Also See for SR500A:

Advertisement

Quick Links

Download this manual
Service Manual
Model: SR500A
ALTO
REV.2

Advertisement

loading
Need help?

Need help?

Do you have a question about the SR500A and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Alto SR500A

Summary of Contents for Alto SR500A

  • Page 1 Service Manual Model: SR500A ALTO REV.2...
  • Page 2 CONTENTS 1. Specifications 2. Block Diagram 3. Schematic Diagram 4. Printed Circuit Board 5. Test Procedures 6. Structural Drawing 7. Exploded View & Mechanical Parts List 8. Electrical Parts List...

  • Page 3: Zone Paging

    Test Result Model No: SR500A Test Date:20050711 Tester: MO GUO ZHU Test Item Test Conditions Spec Test Result Remark Power Source AC: 230V；50 Hz Idle Current AC 230 V No-Load 5 ± 0.5 across R26 &R24 Power Rated Output. FLAT...
  • Page 4 Test Result Model No：SR500A Test Date: 20050711 Tester：MO GUO ZHU Test Item 1. Input 2. Signal/Noise 3. Distortion at 4. Distortion at 5. Frequency Sensitivity Rated Response Test Conditions FLAT Rated FLAT Rated FLAT Output FLAT Rated FLAT Output at...
  • Page 5 02-1...
  • Page 6 第 版 +5VD VR-SW R13 330E +15V IC1E IC3E 33079 33079 CLIP 1920 1718 1516 SIGNAL +15V 1314 1112 -15V SIGN/LIMIT -15V 9 10 CN-10PX2-180 0.0033u +5VA 0.0033u 47u/63V 47u/63V IC1B 47u/63V 33079 33079 33079 0.0033u IC3D IC1A -15V 47u/63V IC1C HIGH 47u/63V...
  • Page 7 +VCC2 820E 390E TR19 12K 2W NJE15031 470P -0.56V TR12 TR11 TIP36C 1N4002 NJE350 9.6V 2N5551 or SIMILAR 0.0018U 1N4002 100P 27.5V 32.1V TR25 1N4002 MJE340 10V 1W -15V 1N4148 100P 0.001U 0.0047U +VCC1 +1.4V -15V 1N4002 0.0047U 10U NP IC7B MJE340 IC7A...
  • Page 8 03-4...
  • Page 9 04-1...
  • Page 10 04-2...
  • Page 11 04-3...
  • Page 12 Instruments required: 5) Resistive load 4 Ω 800W, 1) Sinusoidal signal generator, 6) Resistive load 8 Ω 300W 2) Dual trace scope, with probe, 3) Digital multimeter, 7) Pink noise from the GM “AUDIO CD”. 4) Variac 0-250 Vac, P.S: Isolate the oscilloscope from earth and adjust the two traces on center of screen in GND position.

  • Page 13: Testing Procedure

    TESTING PROCEDURE - Switch ON the LOW amplifier output to 4Ω load resistor and repeat the above booster check verifying more or less the same ± VCC1 conditions and verify that the signal must be symmetrical refer to GND, without detectable distortion and oscillation. Increase the VOLUME pot.
  • Page 14 05-3...
  • Page 15 06-1...
  • Page 16 06-2...
  • Page 17 06-3...
  • Page 18 07-1...

  • Page 19: Mechanical Part List

    NI03152 handle-ABS 85.6*207*7 black_V1.0 MG00536 balck screw-pill M4*20_V1.0 NI03151 handle cover-ABS SR400A;SR500SA black_V1.0 NC00689 K-speaker wooden box SR500A 15吋 PLYWOOD black_V1.0 MI01870 ZE-fixed rack-color plated SR400A_V1.1 MG00351 black screw-pill M4*16 HK05669 K-front panel combination SR500A-ALTO_230V ND00367 EV sponge -one side adhesive 2.0t*100*18mm dark black_V1.0...
  • Page 20 SR500A_ALTO_230V PC00626 SR500A REVISED: 2006/5/30 LEVEL PART NO DESCRIPTION SPECIFICATION QTY REFERENCE ├0001--------------------------------- NC00689 SR500A 15 inch PLYWOOD_V1.0 │├0001------------------------------- NI03152 handle 85.6*207*7 black_V1.0 │├0002------------------------------- NI03151 handle cover SR400A;SR500SA black_V1.0 │├0003------------------------------- MI01870 fixed bracket SR400A_V1.1 ││└0001----------------------------- MI01871 fixed bracket SR400A 3.0t*70*70_V1.1 ││...
  • Page 21 SR500A_ALTO_230V PC00626 SR500A REVISED: 2006/5/30 LEVEL PART NO DESCRIPTION SPECIFICATION QTY REFERENCE │├0007------------------------------- NI02386 konb φ14*13mm │├0008------------------------------- NI02672 knob φ21*16mm │├0009------------------------------- NI00437 rubber coil φ20*φ120*2tB │├0010------------------------------- MG00404 screw M6*70*1.0PH │├0011------------------------------- ME00014 color nut 6*1.0 │├0012------------------------------- MF00130 MIC jack φ6.3*φ19*1t_v1.0 ││└0001-----------------------------...
  • Page 22 SR500A_ALTO_230V PC00626 SR500A REVISED: 2006/5/30 LEVEL PART NO DESCRIPTION SPECIFICATION QTY REFERENCE │││└0022--------------------------- AC00179 tin without lead M705E Sn 3Ag-0.5Cu ││├0002----------------------------- RA00668 fixed resistor 1/8W 47Ω M type R62,R69 ││├0003----------------------------- RA00670 fixed resistor 1/8W 68Ω M type R35,R39 ││├0004----------------------------- RA00677 fixed resistor 1/8W 390Ω...
  • Page 23 SR500A_ALTO_230V PC00626 SR500A REVISED: 2006/5/30 LEVEL PART NO DESCRIPTION SPECIFICATION QTY REFERENCE ││├0004----------------------------- RA00350 fixed resistor 1/8W 820Ω M type ││├0005----------------------------- RA00356 fixed resistor 1/8W 1.2KΩ M type ││├0006----------------------------- RA00373 fixed resistor 1/8W 3.9KΩ M type ││├0007----------------------------- RA00375 fixed resistor 1/8W 4.7KΩ...
  • Page 24 0.04t*100*150mm_V1.0 ├0028--------------------------------- AD00012 twin adhesive 90*120mm_V1.0 ├0029--------------------------------- NB03962 paper defend horn SR 500A 706*48mm_V1.0 ├0030--------------------------------- NA00415 silk wadding-RS SR 500A ALTO down_V1.0 ├0031--------------------------------- NA00416 silk wadding-RS SR 500A ALTO up_V1.0 ├0032--------------------------------- NB03961 carton SR 500A ALT0_V1.0 ├0033--------------------------------- NE04372 label │├0001-------------------------------...