Related Manuals for Alesis 3630
Summary of Contents for Alesis 3630
- Page 1 3630 Compressor/Limiter NanoCompressor Service Manual V 1.00e 5/1/97 T.J. Goodwin Editor WWW.ALESIS.COM Alesis 3630Compressor Service Manual 1.00 12/11/02...
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Page 2: Preface
This document is intended to assist the service technician in the operation, maintenance and repair of the 3630 Compressor/Limiter and the NanoCompressor. Together with the 3630 and NanoCompressor Reference Manuals, this document provides a complete description of the functionality and serviceability of these units. -
Page 3: Safety Suggestions
The AC power supply plug or cord is damaged, d. The product shows an inappropriate change in performance or does not operate normally, or e. The enclosure of the product has been damaged. Alesis 3630Compressor Service Manual 1.00 12/11/02... -
Page 4: Acknowledgments
As editor of this book I receive a great deal of credit for it’s existence. But without the help of the Alesis service team, this book could not reach the standards we have set for it. In particular I would like to thank Robert Morin, John Sarappo, and Gary Stafford for their extra effort in proofreading this material to ensure that it does live up to our standards. -
Page 5: Table Of Contents
3.10 Audio Signal Paths................2 3.20 Control Signal Paths ................2 3.21 Compression Detector 3.22 3630 Gate Detector 3.30 LED Displays ..................3 3.40 3630 Schematic Cross Connections ...........3 4.00 Test Procedures ..................5 4.10 Distortion Adjustments ................5 4.20 Input/Output Level Test...............6 4.30 Function Test ..................7 4.40 Stereo Mode Test ................7... -
Page 6: General Descriptions
Introduced in late 1996, the NanoCompressor consists mainly of the compressor section from the 3630, in a small 1/3 rack space case. This product includes the same hard knee/soft knee compression available in the 3630. Note, however the NanoCompressor is permanently wired for stereo operation (no dual mode). -
Page 7: Signal Paths
Individual switch connections are discussed in section 3.40. Similarly, since the NanoCompressor utilizes the same basic circuitry as the 3630, and both left and right channels function identically, only the left channel is discussed here. -
Page 8: 3630 Gate Detector
(set by R151-R162). In the 3630 the gain reduction LEDs lack the input signal buffer and low pass filtering as it is already slow enough to hold the LEDs on long enough to stay visible. - Page 9 Connects channel B input (U2 pin 8) to input side of monitor switch 9. Connects channel B final output (Just prior to -10/+4 switch S2) to output side of monitor switch S9. Connects the slave gain reduction LEDs to the stereo/dual switch. Alesis 3630 Compressor Service Manual 1.00 12/11/02...
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Page 10: Test Procedures
In the interest of being thorough, the full QC procedure for the 3630 is presented below. The full test requires a distortion analyzer to complete it. Test procedures are identical for both channels. Bearing in mind the obvious limitations of the NanoCompressor, (i.e. -
Page 11: Input/Output Level Test
Change the distortion analyzer to 0.3V output level. 5 GREEN INPUT/OUTPUT LEDs should be on. Change the distortion analyzer to 0.1V output level. 3 GREEN INPUT/OUTPUT LEDs should be on. Figure 3-QC Test Setup Alesis 3630 Compressor Service Manual 1.00 12/11/02... -
Page 12: Function Test
Set the distortion analyzer for a 0.1V output level. Rotate the channel A gate THRESHOLD knob CW. The channel A and B OPEN LEDs should go off, and the channel A and B CLOSE LEDs should be on. Alesis 3630 Compressor Service Manual 1.00 12/11/02... -
Page 13: Final Test
Press the BYPASS/COMP switch IN and OUT. Listen for noise. Rotate the THRESHOLD knob CCW. The volume should drop a little. Listen for noise. Rotate the output knob CW. Volume should increase. Again, listen for noise. Figure 4-QC Test Setup Alesis 3630 Compressor Service Manual 1.00 12/11/02... -
Page 14: Troubleshooting
Broken PS input jack. Check and replace if necessary. In 3630, the ribbon cable between the main PCB and the LED PCB (J5 to J9) is disconnected. Check and reseat if necessary. Faulty component in Power supply circuitry. -
Page 15: Power Up Oscillation
It is included here for the sake of completeness. Figure 7 - Channel Sensing Resistor Location Alesis 3630 Compressor Service Manual 1.00 12/11/02... -
Page 16: Revision C Right Channel Normalization
To cure this, the power supply filter capacitor [C2] was changed from 100µF to 220µF. Alesis 3630 Compressor Service Manual 1.00 12/11/02... -
Page 17: Service Parts List
S2,3 (GAIN) MAIN DPDT SWITCH 6-02-0001 S9-12,4,5,7,8 (FUNCT) DPDT SWITCH (CL\QS) 6-02-0003 S1 (POWER) MAIN 6PDT SWITCH 6-02-0005 S6 (LINK) MAIN FOAM STRIP 0.3x7.5 9-23-1014 FRONT PANEL DESCRIPTION ALPARTNO POSITION RACK EAR 100mm 9-58-1009 Alesis 3630 Compressor Service Manual 1.00 12/11/02... - Page 18 560K OHM 1/8W 5% 0-00-0564 R3,45 MAIN 620 OHM 1/8W 5% 0-00-0621 R80,104 MAIN DESCRIPTION ALPARTNO POSITION 6.2K OHM 1/8W 5% 0-00-0622 R15,41,57,73,74,97,138-140,160,176-178,198 MAIN/LED 680 OHM 1/8W 5% 0-00-0681 R151,189 6.8K OHM 1/8W 5% 0-00-0683 R1,43 Alesis 3630 Compressor Service Manual 1.00 12/11/02...
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Page 19: Nanocompressor Service Parts List
COVER (TOP/SID22E) NANO-SERIES 9-03-1188 PANEL SUB NC 9-03-1233 DESCRIPTION ALPARTNO POSITION CHASSIS MAIN NC (BTM/SIDE/BACK) 9-03-1234 LUG SOLDER PCB MNT 9-03-1036 J2-6 EXTENDER SWITCH NC 9-15-0134 FACEPLATE NC 9-15-1307 POT TRIM 50K 0-08-1503 R10, R27-28 Alesis 3630 Compressor Service Manual 1.00 12/11/02... - Page 20 RES 20.0K OHM 1/8W 1% 0-01-2002 R36, R43 RES 5.11K OHM 1/8W 1% 0-01-5111 R4, R8 FOOT RUBBER NANO-SERIES 9-23-1071 (SET OF 4 FEET) SWITCH DPDT 5mm 6-02-0013 S1-4 TRANS 2N4403 PNP 2-03-4403 Q1-4 Alesis 3630 Compressor Service Manual 1.00 12/11/02...
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Page 21: Service Manual History
This is particularly useful when using percussion instruments to “gate” an instrument with a different amplitude envelope (such as brass or strings). Clockwise CCW Counter Clockwise Power Supply Quality Control Alesis 3630 Compressor Service Manual 1.00 12/11/02... -
Page 22: Index
2252 · 2, 4, 12, 14 D4 · 1, 9 D5 · 3, 12, 14 D9 · 3, 14 3630 · i, ii, 1, 2, 3, 4, 5, 9, 12, 16 damage · iii distortion analyzer · 5, 6, 7 doubler · 1 dual mode ·... - Page 23 · iii, 1, 13 range · 1 rate circuit · 3 ratio · 1, 2, 7, 9 WARNINGS · ii, iii RC networks · 3 rectifier · 2, 4 regulator · 1 Alesis 3630 Compressor Service Manual 1.00 12/11/02...
- Page 24 NOTES Alesis 3630 Compressor Service Manual 1.00 12/11/02...
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Page 25: Schematics
10.00 Schematics Alesis 3630 Compressor Service Manual 1.00 12/11/02... - Page 26 3630 Schematics Master Schematic Alesis 3630 Compressor Service Manual 1.00 12/11/02...
- Page 27 3630 Slave Schematic Alesis 3630 Compressor Service Manual 1.00 12/11/02...
- Page 28 3630 Power Supply Schematic Alesis 3630 Compressor Service Manual 1.00 12/11/02...
- Page 29 3630 Main PCB Componant ID Alesis 3630 Compressor Service Manual 1.00 12/11/02...
- Page 30 3630 LED PCB Componant ID Alesis 3630 Compressor Service Manual 1.00 12/11/02...
- Page 36 Quantity PCB Comment CL-UL SIGNAL PROCESSOR COMPRESSOR 3630 CL - UL 7-40-0903 TRANSFORMER P3-UL 7-51-1219-B SHEET "WELCOME TO ALESIS FAMILY" 5 x 8" CL-AS SIGNAL PROCESSOR COMPRESSOR 3630 CL - AS 7-40-2011 TRANSFORMER P3-AS CL-EU SIGNAL PROCESSOR COMPRESSOR 3630 CL - EU...
- Page 37 C11, C29, C43, C55 1-09-0100 CAP 10uF ELEC 25V 2x5x11mm MAIN C9, C16, C27, C33 1-09-0105 CAP 1.0uF ELEC 25V 2x5x11mm MAIN C8, C17, C19-21, C24-26, C34, C48 1-09-1000 CAP 1000uF ELEC 25V 5x12.5x20mm MAIN C4, C5 12/11/2002 Page 2 alesis Confidential...
- Page 38 R 141-146, 154, 165, 166, 179-184, 192, 203, 204 0-00-0203 RES 20K OHM 1/8W 5% R 135, 163, 173, 201 0-00-0332 RES 3.3K OHM 1/8W 5% R 155, 157, 193, 195 0-00-0392 RES 3.9K OHM 1/8W 5% R 158, 196 12/11/2002 Page 3 alesis Confidential...
- Page 39 IC LM339 QUAD COMP U12-24 LED GREEN DIFFUSED ROUND T1(3mm) 3-00-0001 LED YELLOW ROUND T1(3mm) 3-01-0001 3-02-0001 LED RED DIFFUSED ROUND T1(3mm) 4-14-0020 HEADER DIL 20-PIN 0.1" 6-02-0001 SWITCH DPDT S9-12 9-40-1037 PCB FRONT CL - REV D 12/11/2002 Page 4 alesis Confidential...