Electro-Voice P3000 Service Manual
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Electro-Voice P3000 Service Manual

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SERVICE MANUAL
P3000
PRECISION SERIES

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Summary of Contents for Electro-Voice P3000

  • Page 1 SERVICE MANUAL P3000 PRECISION SERIES...

  • Page 2: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS The lightning flash with arrowhead symbol, within an equi- lateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintance (servicing) instructions in the...

  • Page 3: Architects And Engineers Specifications

    Architects and engineers specifications P 3000 STEREO POWER AMPLIFIER PRECISION SERIES TECHNICAL SPECIFICATIONS Signal / Noise Ratio > 105 dB Maximum precision is also guaranteed as at rated output power 8ohms, one channel A-weighted, RMS to rated output level, regards mechanical construction and finish. driven, unless otherwise specified Input sensitivity + 6dBu The robust steel chassis features remarkab-...
  • Page 4 Tel.: ++49 (0)9421/7060 servicing information contained within this panel accommodates the dB-calibrated input Fax: ++94(0)9421/706265 document is only for use by Electro-Voice Gain controls which are designed as espe- Authorized warranty repair stations and qua- cially precise and safe-to-operate detented MARK IV AUDIO (Europe) AG lified service personnel.
  • Page 5 BLOCK DIAGRAM DIMENSIONS...
  • Page 6 SPECIFICATIONS: P3000 entire unit Measuring Standard IEC 268 part 3IHF-A 0 dBu = 775 mV (RMS) POWER SUPPLY 1. voltage supply 2. nominal supply voltage, depending on the model: 120V/230V/240V 3. nominal mains frequency: 50 - 60 Hz 4. nominal power consumption (2x1200W/4Ω): 4100 W 5.
  • Page 7 FREQUENCY RESPONSE • -3 dB level drop, referenced to the level at the standard frequency of 1 kHz • the power amplifier's border frequencies are at 13 Hz and 40 kHz respectively, referenced to -1 dB Amplification frequency response Input Output f (u) f (o)
  • Page 8 EXTENSIONS optionally available 2 x input transformer NRS 90176 MEASURED SPECIFICATIONS: P3000 entire unit Measurement conditions, unless differently specified: ∆X = ±1.5 dB • tolerance of measured values: • measuring frequency: f = 1 kHz • stated levels refer to: U = 775 mV (0 dBu) •...
  • Page 9 Adjusting the idling current has to be performed at normal room temperature. In case the power amplifier had previously been operated, it has to be given several hours to cool off. 4.2. FLOATING - SYMMETRY Immediately after setting the idle current, a symmetry check of the floating voltage has to be performed. The power amplifier has to be operated in idling condition.
  • Page 10 clipping. The distortion rate of the limited signal is at THD = 1 % … 2 %. Increasing the input signal up to a value of +21 dBu should not result in remarkably higher clipping. 5.2.2. LIMITER FAST/SLOW-Test • tests have to be performed for both channels of the power amplifier individually: testing has to be performed without load resistors connected.
  • Page 11 (100 ms ON, 900 ms OFF), applied to each channel at a time. The protection circuit has to react. The power amplifier tries to re-start continuously while the PROTECT LED blinks with the same frequency. Repeat the test with f = 30 kHz and the limiter set to ON; the power amplifier should not switch off. Level CHANNEL A&B: •...
  • Page 12 DIM 100 < 0.009 % < 0.005 % 3.15 kHz, 15 kHz Frequency Response AMPL(dBr) FREQ(Hz) 21 JUN 94 10:06:59 3.0000 -3.000 -6.000 -9.000 -12.00 -15.00 -18.00 -21.00 100k Plot 1: HI/LO-Cut on Plot 2: HI/LO-Cut off 12. Noise Interference - U(F) = external voltage un-weighted with B = 22 Hz …...
  • Page 20 109 mm 348415 LÜFTER TYP FBAO8A24H fan dc 24V 351141 FB.P3000 front panel p3000 351142 RW.OT.P3000 US 120V rear panel top P3000 351143 RW.UT.P3000 rear panel bottom P3000 351359 DEC.3HE-EV-LACK/P2-3000 LAC top cover 348819 NT-RG.A.P3000 US 120V K.A transformer power 120V (A)
  • Page 21 Page 2 / 12 170018 P 3000 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description CN004 330269 FL.STECKER 6.3/0.8 connector 6.3mm faston CN006 330269 FL.STECKER 6.3/0.8 connector 6.3mm faston CN007 330269 FL.STECKER 6.3/0.8 connector 6.3mm faston CN018 343516 FL.STECKER 4.8/0.5...
  • Page 22 Page 3 / 12 170018 P 3000 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description Q0015 331657 TRANS MJ 15022 transistor MJ 15022 Q0016 331657 TRANS MJ 15022 transistor MJ 15022 Q0017 331657 TRANS MJ 15022 transistor MJ 15022 Q0018 351981...
  • Page 23 250 Ohm lin VR002 348674 WI-TRI 250.00 OHM LIN pot trim 250 Ohm lin 00035 306397 KODIERSTIFT code plug 871288 PCB-B"L1600/2400/P3000/2000 PCB assy 87128 display CN004 306395 FEDERLEISTE 2,5MM O 7POL connector female 7-pole CN07X 344975 MESSERLST. 10POL connector male 10-pin...
  • Page 24 Page 5 / 12 170018 P 3000 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description CN001 330269 FL.STECKER 6.3/0.8 connector 6.3mm faston CN004 306395 FEDERLEISTE 2,5MM O 7POL connector female 7-pole CN007 344975 MESSERLST. 10POL connector male 10-pin CN02A 344975...
  • Page 25 Page 6 / 12 170018 P 3000 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description C0110 326675 KO-EL 100.000MF 10V BIP cap bip electr. 100uF/10V C0111 326675 KO-EL 100.000MF 10V BIP cap bip electr. 100uF/10V C0112 342923 KO-FOL...
  • Page 26 Page 7 / 12 170018 P 3000 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description C0320 301474 KO-EL 22.000MF 16V BIP cap bip electr. 22uF/16V C0600 301472 KO-EL 10.000MF 63V cap electrolytic 10uF/63V C0603 301472 KO-EL 10.000MF 63V cap electrolytic 10uF/63V...
  • Page 27 Page 8 / 12 170018 P 3000 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description D0707 301254 DIODE 1N 4148 AXIAL diode 1N 4148 D0708 301254 DIODE 1N 4148 AXIAL diode 1N 4148 D0710 301254 DIODE 1N 4148 AXIAL diode 1N 4148...
  • Page 28 Page 9 / 12 170018 P 3000 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description 00010 338869 TRANS MJE 350 transistor MJE 350 00010 338869 TRANS MJE 350 transistor MJE 350 Q0107 348422 TRANS MPSA 42 transistor MPSA 42 Q0108 348422...
  • Page 29 Page 10 / 12 170018 P 3000 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description 00010 338868 TRANS MJE 340 transistor MJE 340 00010 338868 TRANS MJE 340 transistor MJE 340 Q0228 348421 TRANS 2N 3906 transistor 2N 3906 Q0229 335763...
  • Page 30 SICHER-HALTE-FEDER 122090. fuse clip 00025 306397 KODIERSTIFT code plug 00030 332452 KODIERBRÜCKE 330.0101 SW shorting plug 852428 PCB+B"L2400/P3000 PCB assy 85242 supply A CN001 330269 FL.STECKER 6.3/0.8 connector 6.3mm faston CN002 330269 FL.STECKER 6.3/0.8 connector 6.3mm faston CN006 348676 STIFTLEISTE 3POL...
  • Page 31 Page 12 / 12 170018 P 3000 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description G02,1 330269 FL.STECKER 6.3/0.8 connector 6.3mm faston 00010 306838 SICHER-HALTER fuse holder 00015 306838 SICHER-HALTER fuse holder 00020 306838 SICHER-HALTER fuse holder 00025 306838...

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