ElectroVoice-CPS1-pwr-sm维修电路原理图.pdf

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1、 SERVICE MANUAL CPS 1 / CPS 2 CINEMA PRECISION SERIESRadioFans.CN 收音机爱 好者资料库Technical Specifications: CPS1, CPS2 Amplifier at rated conditions, both channels driven with 8 ohms loads, unless otherwise specified.CPS1 CPS2 Load Impedance 8 4 2 8 4 2 Maximum Midband Output Power 280W450W 650W 380W600W8

2、50WTHD=1%, 1kHzRated Output Power 230W350W450W 300W500W650WTHD 0, 2%, 20Hz . 20kHz Maximum Bridged Output Power900W1300W 1200W 1700W THD=1%, 1kHz Maximum RMS Voltage Swing 56V 64VTHD=1%, 1kHzVoltage Gain34dB 35dBat 1 kHzSlew Rate 25V/s 30V/sPower Consumption690W 870Wat 1/8 maximum output power 4 Inp

3、ut Sensitivity 0dBu ( 775mV)at rated output power 4 , 1 kHzTHD at rated output power, 0.05 %MBW=80kHz, 1 kHzIMD-SMPTE 0.08 %60 Hz, 7 kHzDIM30 0.03 %3.15kHz, 15 kHzCrosstalk 300 / 200Signal to Noise RatioA-weighted 103dBPower Requirements120V, 50Hz . 60HzProtectionAudio limiters, High temperature, DC

4、, HF, Back-EMF, Peak current limiters, Inrush current limiters, Turn-on delay Cooling Front-to-Rear, 3-stage-fansSafety Class IDimensions (W x H x D), mm483 x 132.5 x 385.5Weight15kg 16kgSPECIFICATIONS7RadioFans.CN 收音机爱 好者资料库1MEASUREMENT SPECIFICATIONS: CPS1 & CPS2 complete applianceprinted board as

5、sembly names and their corresponding EDP-numbers:Printed board assembly EDP-number120V230VCPS1CPS2CPS1CPS284183841848418184182Printed board assemblyIndexMain PCB1Supply PCB4Input PCB2LED PCB3measuring condition; if not otherwise specified:-tolerance of measured values:X = 1.5 dB-measuring frequency:

6、f = 1 kHz-stated levels refer to:U = 775 mV (0 dBu)-level controls set to their clockwise limits-pin assignment of the XLR-type connectors:PIN 1: ground / shieldingPIN 2: + INPUTPIN 3: - INPUT-source resistance for the induction via the XLR-type connector:R(Q) = 50 - the AMPLIFIER PCB printed board

7、assembly is provided with service connectorsCNS1CNS2CNRCPINassignmentPINassignmentPINassignment1-Vcc1LIM A Switch1LIM Out A2BIAS +A2-15V2LIM Out B3BIAS -A3LIM B Switch3Standby via RC4FAN Voltage4+15V4Standby LED5+Vcc5AGND5-Vss6BIAS +B6Speaker Out A6+Vss7BIAS -B7Relais/Protect7n.c.8Temp Heatsink8Spea

8、ker Out B8n.c.1. Operating voltage: U(B) = 120V, 230V, 240V 50Hz . 60Hz2. Deviation limit of the operation voltage:-30% . +10%3. Power consumption (both channels driven) f = 1kHzCPS1CPS2Idling power consumption30-60W40-80WNominal power consumption (RL=4)1400W1900WStandard power consumption (RL=4)430

9、W600WMaximum power consumption (RL=4)1650W2100WPower consumption at 1/8 of the maximum output power690W870W24. Settings / adjustments4.1. IDLING CURRENT ADJUSTMENTConnect the DC-volt meter at the BIAS measuring points (see service connector) and adjust the idling currentvia the trim potentiometer VR

10、101/VR301 (on the main PCB printed board assembly). Adjust both channels ofthe power amplifier A&B to a value of U(DC) = 7.5 mV. Adjusting the idling current has to be performed atnormal room temperature. In case the power amplifier was previously in operation, it needs several hours forcooling off.

11、4.2. VCA - OFFSETRhythmically open and short-circuit the CNS2.1 and CNS2.2 on the main PCB printed board assembly forchannel A; respectively CNS2.3 and CNS2.2 for channel B. Use VR100 respectively VR300 for adjusting thepower amplifier outputs to their minimum offset (with oscilloscope to minimal pe

12、ak value or to the audibleminimal volume of the interfering pulse).5. Testing of functions5.1. OUTPUT - offset voltageDC-voltage measuring at the SPEAKER A/B outputs with U(DC) 10 mV.5.2. LIMITER5.2.1. attenuation testChannels separately driven with a 1 kHz signal up to U(A) = 42.4 volts, respective

13、ly U(A) = 49 volts (withoutload). Increase the input voltage by 10 dB. The LIMITER LED lights and the output voltage increases by about2 dB to approx. 58 volts respectively 64 volts; with slight clipping. The distortion rate of the limited signal isat THD = 1.0 1.5 %. Increasing the input signal up

14、to a value of +20 dBu should not result in remarkablyhigher clipping.5.2.2. attack and release timesseparately test both power amplifier channels: testing without load resistors1.) Drive the power amplifier input with a burst signal (f = 1 kHz, 10 cycles, rate: 0.5 sec.)2.) and U(E) = +10 dBu.2.)Mon

15、itor the output signal via oscilloscope. After 4 - 5 signal periods, the limiter controlled the majordistortion down to a minor residual distortion (THD = 1.0 1.5 %).attack time: 4 - 5 mSrelease time: 40 - 50 mS5.3 POWER-ON DELAYSignal present at the power amplifier input. Use the power-on switch to

16、 switch the power amplifiers power on.Approximately 2 seconds after switching the power on, the signal is present at the amplifiers output.5.4 FAN CONTROLUpon powering-on the power amplifier, the fans will run for about 2 seconds and then stop; presuming that theamplifiers temperature is not too hig

17、h. In idling condition (power-on, no signal present) the fans are switchedbetween the SLOW and OFF (0 V) mode, depending on the heat sinks temperature. When CNS1.8 isconnected via a 5k1 ohms resistor to +15 V, the fans will run in SLOW mode. Fan-voltage of 16.8 V DCmeasured between Pins CNS2.4 and C

18、NS1.4. Disconnecting the plug CN5 results in the fans running at FASTspeed. Fan-voltage of 28 V DC measured between Pins CNS2.4 and CNS1.45.5. SOAR-PROTECTION CIRCUIT TESTChannels separately driven on 4 up to 49 volts; respectively 42.2 volts. Parallel connect a 1 resistor. Theprotection circuit rea

19、cts and tries continuously to re-start! The protect-LED lights. Repeat the test with a 2 resistor; the power amplifier should not switch off.5.6. SHORT-CIRCUIT CURRENT-LIMITING TESTseparately test both power amplifier channels without load:- drive the channel with a burst signal (f = 1 kHz, 1 - 3 cy

20、cles, rate 1 sec.) with U(E) = 1Vrms3- connect a load resistor of 1 the short-circuit current-limiter limits the output voltage at the load resistorsymmetrically (monitor via oscilloscope) to a peak voltage value of 35 V, respectively 27 V ( approx. 35 Arespectively 27 A maximum peak output current)

21、.5.7. DC-VOLTAGE PROTECTION CIRCUIT TESTseparately test both power amplifier channels:-drive the power amplifier with a test signal (f = 7 Hz) and without load-at an input voltage of approx. 3 Vpeak the protection circuit reacts and tries continuously to re-start!The protect-LED blinks with the same

22、 frequency.-Repeat the test with f = 14 Hz; the power amplifier should not switch off.5.8. HF-PROTECTION CIRCUIT TESTCaution: it is mandatory to drive the power amplifier without load resistors connected.Drive the power amplifier with a +20 dBu sine burst signal (40 mS ON, 960 mS OFF) f = 100 kHz ap

23、plied toeach channel at a time. The protection circuit should react. The power amplifier tries to re-start continuously.The PROTECT LED blinks with the same frequency.Repeat the test with f = 50 kHz; the power amplifier should not switch off.5.9. LED INDICATOR TESTApply a 1 kHz sine signal and incre

24、ase its level. At approximately -30 dBu the SIGNAL LEDs will light and atabout +1dBu the LIMIT LEDs light.6. Level CHANNEL A B6.1. voltage amplificationUnitInputU(E)Measure pointU(A)Load resistorTestfrequencyCPS1CH. A/B1VrmsSPEAKER A/B42V1kHzCPS1CH. A1VrmsBRIDGED OUT84V1kHzCPS2CH. A/B1VrmsSPEAKER A/

25、B49V1kHzCPS2CH. A1VrmsBRIDGED OUT98V1kHz6.2. MAXIMUM INPUT LEVEL: U(E) = +20dBu7. GROUND LIFT switchThe circuit ground (at the input or the output connector) is measured versus the common ground of theenclosure (contact at the ground terminal, located on the rear panel - or common ground of the main

26、s cord).position of the switch:GROUNDED : R = 0 UNGROUNDED : R = 5 8. Amplitudes - non-linearities- testing with load resistor 8 , dual mode- MDW = 80 kHzMeasuringat nominal outputremarksCPS1CPS2THD+N ( f = 1kHz )0.05%0.05%IMD-SMPTE0.08%0.08%60Hz, 7kHzDIM 300.03%0.03%3.15kHz, 15kHz9. Frequency respo

27、nsethe frequency response is linear. (please take the cut-off frequencies into consideration)low cut-off frequencyhigh cut-off frequency-3dBfu 10Hzfo = 110kHz-1dBfu 10Hzfo = 57kHz410. Factory defaultBRIDGED MODE switch set to NORMALINPUT ROUTING switch set to DUAL/STEREOLEVEL controls set at their c

28、lockwise 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 268-1)-U(A) = interference voltage A-weighted, dB(A), effective value (IEC

29、268-1)- Signal-to-noise ratio referring to maximum output voltage at 4 and A-weighted interference voltagePower AmpoutputU(F)dBuU(G)dBuU(A)dBuGAINdBIN(A)dBuS/N-R.dBremarksLEVEL controls set to their clockwise marginCPS1SPEAKEROUT A&B-67-56-6932.5-102.5105INPUT A&BR(Q) = 50CPS2SPEAKEROUT A&B-67-56-69

30、33.5-102.5105INPUT A&BR(Q) = 50LEVEL controls set to their counterclockwise marginCPS1SPEAKEROUT A&B-68-57-70/INPUT A&BR(Q) = 50CPS2SPEAKEROUT A&B-68-57-70/INPUT A&BR(Q) = 5012. Dimensions and weightPower amplifierweightDimensions in mmCPS115kg483 x 132.5 x 385.5CPS216kg483 x 132.5 x 385.5Page 1 / 8

31、Ersatzteilliste - Bill of Materials 170074CPS 1 US 120V POWER-AMP Pos. Nr. Ref. No.Best. Nr. Part No.BezeichnungDescriptionZubehrAccessories & packing material355745OWNERS MANUAL CPS 1/2 owners manual CPS 1/2 354617KABEL-NETZ UL/CSA 15A/125Vpower cord US 337053SCHUTZHLLE 650X800X0,08 poly bag 306482

32、KRT. 2 HE 556X507X178carton 355741STYROPOR-EINLAGE S900/Q44 filler, foam 355742STYROPOR-PL. 500X370X20filler, carton Mechanische TeileCabinet materialG0010343270GLRI GBPC 3504 rectifier GBPC-P 3504 S0010346720SCHALTER-NETZ ESB-99888V power switch 354691BUCHSENLEISTE 3POL connector female 3-pole 3413

33、82KNOPF-TASTE 20X8 SW 3.3push button black 357958DK 11 SW/WS/RT C 6FL rotary knob 337044VERSCHL-KAPPE 2633 DP-437 plug, hole 348415LFTER TYP FBAO8A24H DCfan dc 24V 349693KABEL-KONFEKT 4POL 0.670Mribbon cable assy 4-way 346790KABEL-KONFEKT 8POL 0.300Mribbon cable assy 8way 349612KABEL-KONFEKT 8POL 0.

34、400Mribbon cable assy 8-way 355670FB.CPS 1 BEDfront panel CPS1 355743CH.CPS 1/2 chassis CPS 1/2 355780RCKWAND BED. CPS 1 US rear panel CPS1 351353DEC.3HE DEM-LAC/L16-2400LACtop cover chassis 354647NT-RG.Q44/S900 120/240V mains transformer 120/240V 348805WI-SO PTC K155 100GRADsafety component PTC 348

35、341FEDERLEISTE 3POL CE100-connector female 3-pole 841838PCB+AR#CPS 1 USpcb assy 84183 CNAC1343516FL.STECKER 4.8/0.5 connector 4.8mm faston CNAC2343516FL.STECKER 4.8/0.5 connector 4.8mm faston CNGND343516FL.STECKER 4.8/0.5 connector 4.8mm faston CNGN1330269FL.STECKER 6.3/0.8 connector 6.3mm faston CN

36、001344862MESSERLST. 8POL connector male 8-pin CN002348334STIFTLEISTE 3POL MLSSconnector male 3-pin CN003348334STIFTLEISTE 3POL MLSSconnector male 3-pin CN005348334STIFTLEISTE 3POL MLSSconnector male 3-pin CN007330269FL.STECKER 6.3/0.8 connector 6.3mm faston CN01X344862MESSERLST. 8POL connector male

37、8-pin CN010330269FL.STECKER 6.3/0.8 connector 6.3mm faston CN011330269FL.STECKER 6.3/0.8 connector 6.3mm faston CN012330269FL.STECKER 6.3/0.8 connector 6.3mm faston CN013330269FL.STECKER 6.3/0.8 connector 6.3mm faston CN018341937MESSERLST. 4POL connector male 4-pin CN019330269FL.STECKER 6.3/0.8 conn

38、ector 6.3mm faston CN020344862MESSERLST. 8POL connector male 8-pin CN08X343516FL.STECKER 4.8/0.5 connector 4.8mm faston Page 2 / 8 170074CPS 1 US 120V POWER-AMP Pos. Nr. Ref. No.Best. Nr. Part No.BezeichnungDescriptionCN18X341937MESSERLST. 4POL connector male 4-pin CN20X344862MESSERLST. 8POL connect

39、or male 8-pin CN501354692STIFTLEISTE 3POL connector male 3-pin CN502354692STIFTLEISTE 3POL connector male 3-pin C0001342923KO-FOL 0.220MF 63V 5%cap mylar 220nF C0002307445KO-EL 10.000MF 35V cap electrolytic 10uF/35V C0005329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0006329021KO-KER 0.10MF 100V 20%

40、cap ceramic 100nF C0007343530KO-EL 47.000MF 50V cap electrolytic 47uF/50V C0008329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0011351835KO-EL 4700.000MF 100V 20%cap electrolytic 4700uF/100C0012351835KO-EL 4700.000MF 100V 20%cap electrolytic 4700uF/100C0013351835KO-EL 4700.000MF 100V 20%cap electroly

41、tic 4700uF/100C0014351835KO-EL 4700.000MF 100V 20%cap electrolytic 4700uF/100C0015341714KO-SO 0.10MF 275V 20% Ksafety cap 100nF/275V C0016329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0017329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0018327366KO-EL 4.700MF 50V BIPcap electrolytic 4.7uF/50V C00193

42、29021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0022329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0023329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0024335935KO-EL 2200.000MF 35V cap electrolytic 2200uF/35VC0025335935KO-EL 2200.000MF 35V cap electrolytic 2200uF/35VC0026343530KO-EL 47.000MF 50V cap e

43、lectrolytic 47uF/50V C0027343530KO-EL 47.000MF 50V cap electrolytic 47uF/50V C0028301524KO-KER 47.0PF 500V 10%cap ceramic 47pF C0029301524KO-KER 47.0PF 500V 10%cap ceramic 47pF C0030329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0031329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0032341714KO-SO 0.10

44、MF 275V 20% Ksafety cap 100nF/275V C0100301558KO-KER 33.0PF 100V 2%cap ceramic 33pF C0101301558KO-KER 33.0PF 100V 2%cap ceramic 33pF C0102301478KO-EL 22.000MF 63V cap electrolytic 22uF/63V C0103335787KO-KER 15.0PF 100V 2%cap ceramic 15pF C0104335787KO-KER 15.0PF 100V 2%cap ceramic 15pF C0105301470KO

45、-EL 4.700MF 63V cap electrolytic 4.7uF/63V C0106327390KO-FOL 470.000PF 100V 5%cap mylar 470pF C0107340988KO-FOL 0.470MF 63V 5%cap mylar 470nF C0108301530KO-KER 100.0PF 500V 10%cap ceramic 100pF C0109343532KO-EL 100.000MF 25V cap electrolytic 100uF/25V C0110343532KO-EL 100.000MF 25V cap electrolytic

46、100uF/25V C0111340988KO-FOL 0.470MF 63V 5%cap mylar 470nF C0112343532KO-EL 100.000MF 25V cap electrolytic 100uF/25V C0113343532KO-EL 100.000MF 25V cap electrolytic 100uF/25V C0114329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0115329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0116343532KO-EL 100.000

47、MF 25V cap electrolytic 100uF/25V C0117351994KO-KER 120.0PF 500V 2%cap ceramic 120pF C0118351994KO-KER 120.0PF 500V 2%cap ceramic 120pF C0119301458KO-EL 2.200MF 63V cap electrolytic 2.2uF/63V C0120356605KO-FOL 0.100MF 250V 5%cap mylar 100nF C0123301519KO-KER 10.0PF 500V 10%cap ceramic 10pF Page 3 /

48、8 170074CPS 1 US 120V POWER-AMP Pos. Nr. Ref. No.Best. Nr. Part No.BezeichnungDescriptionC0124301519KO-KER 10.0PF 500V 10%cap ceramic 10pF C0125301474KO-EL 22.000MF 16V BIPcap bip electr. 22uF/16V C0126329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0127329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C

49、0128329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0129329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0300301558KO-KER 33.0PF 100V 2%cap ceramic 33pF C0301301558KO-KER 33.0PF 100V 2%cap ceramic 33pF C0302301478KO-EL 22.000MF 63V cap electrolytic 22uF/63V C0303335787KO-KER 15.0PF 100V 2%cap ceramic 1

50、5pF C0304335787KO-KER 15.0PF 100V 2%cap ceramic 15pF C0305301470KO-EL 4.700MF 63V cap electrolytic 4.7uF/63V C0306327390KO-FOL 470.000PF 100V 5%cap mylar 470pF C0307340988KO-FOL 0.470MF 63V 5%cap mylar 470nF C0308301530KO-KER 100.0PF 500V 10%cap ceramic 100pF C0309343532KO-EL 100.000MF 25V cap elect