Shure SR109 Operation And Service Manual Download | Manualshive

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Summary of Contents for SR109

Page 1: ...anufactured by SHURE BROTHERS INC 222 Hartrey Avenue Evanston Illinois60204 U S A WARNING To reduce the risk of fire or electric shock d o not expose this appliance to rain or extreme moisture Copyrig...

Page 2: ...y 83 dB at maximum out put with one channel Volume Control and MASTER Volume Control set at 8 approximate ly 58 dB gain lnput Attenuation 0 15 dB switch selected lnput Clipping Level at 1 kHz MIC lnpu...

Page 3: ...NE LEVEL and MIC LEVEL OUTPUTS PHASE Switch in 0 position Pins 1 8 of ACCESSORY OUTPUT out of phase with the above Phase Switch Output polarity reversing switch 0 180 reverses phaseof all program outp...

Page 4: ...17 Transistor and Diode Removal 17 Active Component Checking 17 Service Illustrations 18 Optional Accessories 18 REPLACEMENT PARTS LIST 19 NOTES TO CIRCUIT DIAGRAM General 29 Troubleshooting 29 Ac Vol...

Page 5: ...ins a peak responding adjustable out put limiter with an in out switch and an indicator lamp that flashes when the limiter is operating The front panel also contains an overload indicator lamp that si...

Page 6: ...FIGURE 1 SR109 PROFESSIONAL MIXER FRONT PANEL 1 5 16 17 1 8 14 19 13 SR109 2E Only 27 28 FIGURE 2 SR109 PROFESSIONAL MIXER REAR PANEL 2...

Page 7: ...132V 0 2AT SLO BLO Ac Fuse Protects Mixer ac input line against overload SR109 2E only 9 MASTER Volume Rotary control and POWER switch Adjusts level of totai program output and applies ac power to pow...

Page 8: ...ading Then increase the power ampli fier level control to the desired level Using the 15 dB ATTENUATORS 18 may aid in maintaining this set ting if the channel Volume Control is consistently set low 9...

Page 9: ...r to the Mixer through the front panel POWER Switch 9 The Mixer consumes 20 watts maximum 0 2 amperes and the ac line input is protected by a 3 16 ampere slow blow fuse 13 and a wired in 3 10 ampere s...

Page 10: ...vel is exceeded The Limiter Attenuator also feeds a 7 to 35 dB output Amplifier also controlled by the MASTER Volume Control The signal then goes through a 0 180 PHASE Switch 15 and into the Program O...

Page 11: ...0 dBm The LlNK INPUT impedance is greater than 20 kilohms and may be considered a bridging impedance The output of the LlNK Jacks feeds the MASTER Volume Control 9 which is a two section control simil...

Page 12: ...increase the MASTER Volume Control 9 and TONE OSC Control 1 until a 0 VU reading is obtained on the VU Meter A tone reference level has now been established The Mixer LlNE LEVEL Output 23 24 is now 4...

Page 13: ...educe the possibility of hum picking up the instrument Output may very and noise provide a more desirable sound than that obtained by di rect connections MUSICAL INSTRUMENTS The cable length restricti...

Page 14: ...rmer to a MICROPHONE LEVEL lnput Connector 19 on the Mixer see Figure 9A Page 10 Note that the total lead length between the turntable and the A95 should not exceed 1 5m 5 ft To approximate the RlAA e...

Page 15: ...tion Note that the Shure M68FC mixer cannot be used this way The mixer to link out jack connection can also be used with several mjxers Each mixer output must contain its ADDITIONAL MlXER INPUTS Addit...

Page 16: ......

Page 17: ...g bal ance Once the SR110 levels are set the SR109 provides the mix for both PA and tape recording An expansion of the above method may be used to re cord 4 channel quadriphonic sound In this method f...

Page 18: ...he highest possible performance and reliability Shure factory replacement parts should be used When ordering replacement parts specify the Shure Replacement Kit Number RKC description product model nu...

Page 19: ...y Board Red 5 Yellow Green Black F Yellow Gray G Black 7 Program Mute Board Green White E I Red ID C D Ch 4 C D Ch 5 C D Ch 6 C D Ch 7 C D Ch 8 White Gray Blue Green Yellow Orange White Red Brown Blac...

Page 20: ...e channel 1 volume The OVER LOAD Lamp D2 should light 2 dB before distortion can be heard on the headphones VU METER REMOVAL If the VU Meter MI requires replacement remove it as follows Remove the top...

Page 21: ...se tran sistor leads where they were removed ACTIVE COMPONENT CHECKING Defective transistors and diodes may be located by use of a standard ohmmeter such as a Simpson 260 Polarity of the ohmmeter must...

Page 22: ...oard may be located from the cor responding parts location drawing Foil circuit paths are shown as shaded areas on the drawings The overall Circuit Diagram Figures 24 and 25 Pages 30 and 32 33 shows a...

Page 23: ...ogram Mute Capacitor Dual Electrolytic 1000pF 70V DiodeAssembly Light Emitting Fuse Ac 3AG 3 16A 125V Slo Blo SR109 0 1A for 220V operation 0 2A for 115V operation Fuse Ac Slo Blo 250V SR109 2E Fuse A...

Page 24: ...anneland MASTERVolume Nameplate Write on Nameplate Shure Lamp Indicator 6 3V Transistor Silicon NPN Potentiometer Modified Log Tandem 50k with TONE OSC Switch Channel 1Volume Potentiometer Tandem 50k...

Page 25: ...Part No 51D228 Capacitor Electrolytic 4 7 or 5pF 35V Capacitor Electrolytic 50p F 35V Capacitor Electrolytic 250 pF 40V Silicon Rectifier 100V Y2A Ferrite Bead Ring Transistor Silicon Low Power NPN T...

Page 26: ...4 F 25V Capacitor Electrolytic 100 F 25V 46A034 Capacitor Electrolytic 47 F 16V Silicon Rectifier 50V 112A Potentiometer 50k HI and LO FREQ EQ Diode Silicon Computer 75v Silicon Zener Diode 22V 5 Ferr...

Page 27: ...0 p F 60V Transistor Silicon NPN Transistor Silicon NPN Capacitor Electrolytic 250 p F 40V Capacitor Film I pF 1IOOV Silicon Rectifier IOOV 1 2A ISilicon Zener Diode 32V 5 Transistor Silicon Power NPN...

Page 28: ......

Page 29: ...FIGURE 19 BOARD 2 CHANNEL EQUALIZER 2247 2 2246 3 587 4...

Page 30: ......

Page 31: ...FIGURE 21 BOARD 9 POWER SUPPLY 2210 9 2251 3 591 4 FIGURE 22 BOARD 0 PROGRAM MUTE 2254415923...

Page 32: ......

Page 33: ...es at that point under All resistor values are shown in ohms k 1000 Re the following test conditions sistors are 10 tolerance unless otherwise specified 1 Voltages measured with respect to chassis unl...

Page 34: ...120V or 240V 50 60 Hz SR109 2E 3 No inputsignal applied 4 Dc voltage measurements may vary 20 from values shown 5 Measurements made with VTVM of 11 megohms or greater input impedance 6 Tone oscillato...

Page 35: ...FIGURE 25 SR109 PROFESSIONAL MIXER CIRCUIT DIAGRAM...

Page 36: ...MAIN BOARD 33 FIGURE 25 SR109 PROFESSIONAL MIXER CIRCUIT DIAGRAM...

Page 37: ...e microphone input clipping level with a zero attenu ator setting shall be 4 5 millivolts minimum with the level control at maximum and shall increase to 100 millivolts minimum with the level control...

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