Electro-Voice CPS 1 Service Manual
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Electro-Voice CPS 1 Service Manual

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See also: Owner's Manual
SERVICE MANUAL
CPS 1 / CPS 2
CINEMA PRECISION SERIES

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Summary of Contents for Electro-Voice CPS 1

  • Page 1 SERVICE MANUAL CPS 1 / CPS 2 CINEMA PRECISION SERIES...

  • Page 2: Specifications

    SPECIFICATIONS Technical Specifications: CPS1, CPS2 Amplifier at rated conditions, both channels driven with 8 ohms loads, unless otherwise specified. CPS1 CPS2 8 Ω 4 Ω 2 Ω 8 Ω 4 Ω 2 Ω Load Impedance Maximum Midband Output Power 280W 450W 650W 380W 600W 850W THD=1%, 1kHz...
  • Page 3 MEASUREMENT SPECIFICATIONS: CPS1 & CPS2 complete appliance printed board assembly names and their corresponding EDP-numbers: Printed board assembly EDP-number 120V 230V CPS1 CPS2 CPS1 CPS2 84183 84184 84181 84182 Printed board assembly Index Main PCB Supply PCB Input PCB LED PCB measuring condition;...
  • Page 4 4. Settings / adjustments 4.1. IDLING CURRENT ADJUSTMENT Connect the DC-volt meter at the BIAS measuring points (see service connector) and adjust the idling current via the trim potentiometer VR101/VR301 (on the main PCB printed board assembly). Adjust both channels of the power amplifier A&B to a value of U(DC) = 7.5 mV.
  • Page 5 connect a load resistor of 1 Ω the short-circuit current-limiter limits the output voltage at the load resistor symmetrically (monitor via oscilloscope) to a peak voltage value of 35 V, respectively 27 V ( approx. 35 A respectively 27 A maximum peak output current). 5.7.
  • Page 6 10. Factory default BRIDGED MODE switch set to NORMAL INPUT ROUTING switch set to DUAL/STEREO LEVEL controls set at their clockwise margin. 11. Noise interference U(F) = external voltage un-weighted with B = 22 Hz … 22 kHz, effective value (IEC 268-1) U(G) = noise voltage, frequency-weighting filter according to CCIR-468-3, quasi peak weighted (IEC 268- U(A) = interference voltage A-weighted, dB(A), effective value (IEC 268-1) Signal-to-noise ratio referring to maximum output voltage at 4 Ω...
  • Page 10 Page 1 / 8 Ersatzteilliste - Bill of Materials 170074 CPS 1 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description Zubehör Accessories & packing material 355745 OWNER'S MANUAL CPS 1/2 owner's manual CPS 1/2 354617...
  • Page 11 Page 2 / 8 170074 CPS 1 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description CN18X 341937 MESSERLST. 4POL connector male 4-pin CN20X 344862 MESSERLST. 8POL connector male 8-pin CN501 354692 STIFTLEISTE 3POL connector male 3-pin...
  • Page 12 Page 3 / 8 170074 CPS 1 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description C0124 301519 KO-KER 10.0PF 500V 10% cap ceramic 10pF C0125 301474 KO-EL 22.000MF 16V BIP cap bip electr. 22uF/16V C0126...
  • Page 13 Page 4 / 8 170074 CPS 1 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description C0519 329021 KO-KER 0.10MF 100V 20% cap ceramic 100nF C0520 340522 KO-EL 10.000MF 35V cap electrolytic 10uF/35 C0521 340522 KO-EL 10.000MF 35V...
  • Page 14 Page 5 / 8 170074 CPS 1 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description D0313 301254 DIODE 1N 4148 AXIAL diode 1N 4148 D0314 304360 DIODE 1N 4007 GEGURTET diode 1N 4002 D0315 304360...
  • Page 15 Page 6 / 8 170074 CPS 1 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description Q0012 307150 TRANS BC 337-25 TO 92 transistor BC 337-25 Q0017 307150 TRANS BC 337-25 TO 92 transistor BC 337-25...
  • Page 16 Page 7 / 8 170074 CPS 1 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description Q0300 348421 TRANS 2N 3906 transistor 2N 3906 Q0301 335763 TRANS 2N 3904 transistor 2N 3904 Q0303 330264 TRANS J 111...
  • Page 17 Page 8 / 8 170074 CPS 1 US 120V POWER-AMP Pos. Nr. Best. Nr. Ref. No. Part No. Bezeichnung Description R0065 348550 WI-SO NTC 10 OHM safety resistor 10 Ohm R0185 348456 WI-DR 2X 0.22 OHM 5.00W 5% resistor 2x0.22 Ohm 5watt...

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Cps 2Cinema precision seriesCinema precision cps 2

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