Shure SE30-2 Manuel de service

MODELS SE30 & SE30-2EGATED COMPRESSOR/MIXEROPERATING AND SERVICE MANUALCopyright 1981, Shure Brothers Inc.27A8025 (AK) (90A8103)Printed in U.S.A.

FUNCTIONAL BLOCK DIAGRAM - FIGURE 3

THEORY OF OPERATION (Cont’d)maximum of 30 dB, the second potentiometer section actsas a conventional voltage divider output attenuator for lowcontrol

SCHEMATIC DIAGRAM - FIGURE 4A

SCHEMATIC DIAGRAM - FIGURE 4B

SCHEMATIC DIAGRAM - FIGURE 4C

SCHEMATIC DIAGRAM - FIGURE 4D

SCHEMATIC DIAGRAMINTEGRATED CIRCUIT MC201 AND MC301FIGURE 4EREPLACEMENT PARTS FOR SE30-TABLE 1PIN CONNECTIONS-TOP VIEWNOTE:THE COMMECIAL ALTERNATES SH

TABLE 1 (Cont’d)NOTE:THE COMMERCIAL ALTERNATES SHOWN ABOVE ARE NOT NECESSARILY EQUIVALENTS BUT MAY BE USED IN THE EVENT THAT DIRECT FACTORY REPLACEMEN

TEST VOLTAGES, P. C. BOARD TERMINALSTABLE 2A18

TEST VOLTAGES, TRANSISTORS - TABLE 2B19

Table of ContentsList of IllustrationsWARNINGTo reduce the risk of fire or electric shock, do notexpose this appliance to rain or extreme moisture.

TEST VOLTAGES, INTEGRATED CIRCUITSTABLE 1CNOTES TO SCHEMATIC DIAGRAM ANDTEST VOLTAGES (Figure 4, Table 2)1. All capacitors shown in microfarads and 50

CHASSIS PARTS PLACEMENTFIGURE 521

22PRINTED CIRCUIT BOARD 1PRINTED CIRCUIT BOARD 2PARTS PLACEMENTFIGURE 6A

PRINTED CIRCUIT BOARD 3PRINTED CIRCUIT BOARD 4PARTS PLACEMENTFIGURE 6B23

PRINTED CIRCUIT BOARD 5PARTS PLACEMENTFIGURE 6C24

SERVICE INSTRUCTIONSThe SE30 Gated Compressor/Mixer uses componentsof the highest quality, operating well within their ratingsto assure long life and

SERVICE INSTRUCTIONS (Cont’d)3.4.5.6.7.8.26push-on retainers so that it may be raised above thechassis for service without complete removal. With allp

SERVICE INSTRUCTIONS (Cont’d)PROCEDURE:First, the meter (7) must be mechanically set to zero.Turn the Power switch (11) OFF and wait one minute. Them

SERVICE INSTRUCTIONS (Cont’d)C. Set the Meter switch (8) to VU and the VU Rangeswitch (4) to +4. Adjust VU CAL trimmer poten-tiometer (R529) for a 0 V

MODIFICATIONSNoise Improvement for Single Inputs:The overall signal-to-noise ratio of the SE30 may be im-proved for single-input applications by disab

DESCRIPTIONThe Shure Model SE30* Gated Compressor/Mixer is ahigh-quality gated memory compressor combined with aself-contained, portable, three-input

MODEL A100A CARRYING HANDLE ASSEMBLYThe Shure Model A100A Carrying Handle Assemblyprovides a means for conveniently carrying the ShureModel SE30 Gated

SPECIFICATIONS (Cont’d)Input/Output:Distortion:Below compression threshold, under 0.5% THD at+15 dBm output, 30-20 kHz.At 10 dB compression, under 1%

SPECIFICATIONS (Cont’d)(11)Battery Operation:27 volts nominal, 21.5 volts minimum. Current con-sumption at 27 volts, 10 ma. at no signal; 12 ma. at20

CONTROLS AND CONNECTORSFIGURE 2

(25) AC Power Receptacle: Special internationally ac-cepted connector for detachable ac line cord, three-wire with safety ground pin.(26) 30 Volts

GENERAL OPERATION (Cont’d)The “Tip” connection of the headphone plug will be inphase with Pin 3 of all Input (13) and Output (16) connec-tors, and wit

OPERATING CONSIDERATIONS (Cont’d)conference or conversation situation, with several micro-phones “live” but only one speaker talking at a time, eachIn