Table Of Contents
PREFACE..........................................................................................................ii
WARNINGS.......................................................................................................ii
SAFETY SUGGESTIONS .................................................................................iii
Acknowledgments .............................................................................................iv
1.00 General Descriptions .................................................................................1
1.10 3630 Compressor/Limiter....................................................................1
1.20 NanoCompressor................................................................................1
2.00 Power Supplies..........................................................................................1
3.00 Signal Paths ..............................................................................................2
3.10 Audio Signal Paths..............................................................................2
3.20 Control Signal Paths ...........................................................................2
3.21 Compression Detector 2
3.22 3630 Gate Detector 3
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
4.50 Final Test ............................................................................................8
5.00 Troubleshooting.........................................................................................9
6.00 Updates And Corrections...........................................................................9
6.10 3630 Changes.....................................................................................9
6.11 Revision B Main PCB Distortion Reduction. 9
6.12 Power Up Oscillation 10
6.13 Revision C Main PCB Dual/Stereo Switch Noise 10
6.20 NanoCompressor Changes.................................................................10
6.21 Revision B Main PCB Right Channel Sensing Resistor 10
6.22 Revision C Right Channel Normalization 11
6.23 Improvement of High Frequency Phase Response 11
6.24 Improvement of Power Supply Stability Under High Output Loading....11
7.00 Service Parts List.......................................................................................12
7.10 3630 Service Parts List .......................................................................12
7.20 NanoCompressor Service Parts List ...................................................14
8.00 Service Manual History..............................................................................16
9.00 Dictionary of selected terms ......................................................................16
INDEX................................................................................................................17
10.00 Schematics ..............................................................................................20
Alesis 3630Compressor Service Manual 1.00 v 12/11/02
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