ElectroVoice-CPS2-pwr-sm维修电路原理图.pdf

上传人：cc518

文档编号：102563

上传时间：2020-11-07

格式：PDF

页数：18

大小：1.08MB

《ElectroVoice-CPS2-pwr-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《ElectroVoice-CPS2-pwr-sm维修电路原理图.pdf（18页珍藏版）》请在收音机爱好者资料库上搜索。

1、 SERVICE MANUAL CPS 1 / CPS 2 CINEMA PRECISION SERIES RadioFans.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 380W60

2、0W850W THD=1%, 1kHz Rated Output Power 230W350W450W 300W500W650W THD 0, 2%, 20Hz . 20kHz Maximum Bridged Output Power900W1300W 1200W 1700W THD=1%, 1kHz Maximum RMS Voltage Swing 56V 64V THD=1%, 1kHz Voltage Gain34dB 35dB at 1 kHz Slew Rate 25V/s 30V/s Power Consumption690W 870W at 1/8 maximum output

3、 power 4 Input Sensitivity 0dBu ( 775mV) at rated output power 4 , 1 kHz THD at rated output power, 0.05 % MBW=80kHz, 1 kHz IMD-SMPTE 0.08 % 60 Hz, 7 kHz DIM30 0.03 % 3.15kHz, 15 kHz Crosstalk 300 / 200 Signal to Noise Ratio A-weighted 103dB Power Requirements120V, 50Hz . 60Hz ProtectionAudio limite

4、rs, High temperature, DC, HF, Back-EMF, Peak current limiters, Inrush current limiters, Turn-on delay Cooling Front-to-Rear, 3-stage-fans Safety Class I Dimensions (W x H x D), mm483 x 132.5 x 385.5 Weight15kg 16kg SPECIFICATIONS 7 RadioFans.CN 收音机爱好者资料库 1 MEASUREMENT SPECIFICATIONS: CPS1 if not ot

5、herwise specified: -tolerance of measured values:X = 1.5 dB -measuring frequency: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 / shielding PIN 2: + INPUT PIN 3: - INPUT -source resistance fo

6、r the induction via the XLR-type connector:R(Q) = 50 - the AMPLIFIER PCB printed board assembly is provided with service connectors CNS1CNS2CNRC PINassignmentPINassignmentPINassignment 1-Vcc1LIM A Switch1LIM Out A 2BIAS +A2-15V2LIM Out B 3BIAS -A3LIM B Switch3Standby via RC 4FAN Voltage4+15V4Standby

7、 LED 5+Vcc5AGND5-Vss 6BIAS +B6Speaker Out A6+Vss 7BIAS -B7Relais/Protect7n.c. 8Temp Heatsink8Speaker Out B8n.c. 1. Operating voltage: U(B) = 120V, 230V, 240V 50Hz . 60Hz 2. Deviation limit of the operation voltage:-30% . +10% 3. Power consumption (both channels driven) f = 1kHz CPS1CPS2 Idling power

8、 consumption30-60W40-80W Nominal power consumption (RL=4)1400W1900W Standard power consumption (RL=4)430W600W Maximum power consumption (RL=4)1650W2100W Power consumption at 1/8 of the maximum output power690W870W RadioFans.CN 收音机爱好者资料库 2 4. Settings / adjustments 4.1. IDLING CURRENT ADJUSTMENT Con

9、nect 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 respectively CNS2.3 and CNS2.2 for channel B. Use VR100 respectivel

10、y VR300 for adjusting the power amplifier outputs to their minimum offset (with oscilloscope to minimal peak value or to the audible minimal volume of the interfering pulse). 5. Testing of functions 5.1. OUTPUT - offset voltage DC-voltage measuring at the SPEAKER A/B outputs with U(DC) 10 mV. 5.2. L

11、IMITER 5.2.1. attenuation test Channels separately driven with a 1 kHz signal up to U(A) = 42.4 volts, respectively U(A) = 49 volts (without load). Increase the input voltage by 10 dB. The LIMITER LED lights and the output voltage increases by about 2 dB to approx. 58 volts respectively 64 volts; wi

12、th slight clipping. The distortion rate of the limited signal is at THD = 1.0 1.5 %. Increasing the input signal up to a value of +20 dBu should not result in remarkably higher clipping. 5.2.2. attack and release times separately test both power amplifier channels: testing without load resistors 1.)

13、 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.)Monitor the output signal via oscilloscope. After 4 - 5 signal periods, the limiter controlled the major distortion down to a minor residual distortion (THD = 1.0 1.5 %). attack tim

14、e: 4 - 5 mSrelease time: 40 - 50 mS 5.3 POWER-ON DELAY Signal present at the power amplifier input. Use the power-on switch to 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 CONTROL Upon powering-on

15、the power amplifier, the fans will run for about 2 seconds and then stop; presuming that the amplifiers temperature is not too high. In idling condition (power-on, no signal present) the fans are switched between the SLOW and OFF (0 V) mode, depending on the heat sinks temperature. When CNS1.8 is co

16、nnected via a 5k1 ohms resistor to +15 V, the fans will run in SLOW mode. Fan-voltage of 16.8 V DC measured between Pins CNS2.4 and CNS1.4. Disconnecting the plug CN5 results in the fans running at FAST speed. Fan-voltage of 28 V DC measured between Pins CNS2.4 and CNS1.4 5.5. SOAR-PROTECTION CIRCUI

17、T TEST Channels separately driven on 4 up to 49 volts; respectively 42.2 volts. Parallel connect a 1 resistor. The protection circuit reacts 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 CU

18、RRENT-LIMITING TEST separately test both power amplifier channels without load: - drive the channel with a burst signal (f = 1 kHz, 1 - 3 cycles, rate 1 sec.) with U(E) = 1Vrms RadioFans.CN 收音机爱好者资料库 3 - connect a load resistor of 1 the short-circuit current-limiter limits the output voltage at the

19、 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. DC-VOLTAGE PROTECTION CIRCUIT TEST separately test both power amplifier channels: -drive the power amplifier with a test sign

20、al (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 frequency. -Repeat the test with f = 14 Hz; the power amplifier should not switch off. 5.8. HF-PROTECTION CIRCUIT TEST Caution

21、: 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 applied to each channel at a time. The protection circuit should react. The power amplifier tries to re-start continuously. T

22、he 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 TEST Apply a 1 kHz sine signal and increase its level. At approximately -30 dBu the SIGNAL LEDs will light and at about +1dBu the LIMIT LEDs light. 6. Level C

23、HANNEL A B 6.1. voltage amplification UnitInputU(E)Measure pointU(A)Load resistorTest frequency CPS1CH. A/B1VrmsSPEAKER A/B42V1kHz CPS1CH. A1VrmsBRIDGED OUT84V1kHz CPS2CH. A/B1VrmsSPEAKER A/B49V1kHz CPS2CH. A1VrmsBRIDGED OUT98V1kHz 6.2. MAXIMUM INPUT LEVEL: U(E) = +20dBu 7. GROUND LIFT switch The ci

24、rcuit ground (at the input or the output connector) is measured versus the common ground of the enclosure (contact at the ground terminal, located on the rear panel - or common ground of the mains cord). position of the switch:GROUNDED : R = 0 UNGROUNDED : R = 5 8. Amplitudes - non-linearities - tes

25、ting with load resistor 8 , dual mode - MDW = 80 kHz Measuringat nominal outputremarks CPS1CPS2 THD+N ( f = 1kHz )0.05%0.05% IMD-SMPTE0.08%0.08%60Hz, 7kHz DIM 300.03%0.03%3.15kHz, 15kHz 9. Frequency response the frequency response is linear. (please take the cut-off frequencies into consideration) l

26、ow cut-off frequencyhigh cut-off frequency -3dBfu 10Hzfo = 110kHz -1dBfu 10Hzfo = 57kHz RadioFans.CN 收音机爱好者资料库 4 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 voltag

27、e 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 268-1) - Signal-to-noise ratio referring to maximum output

28、 voltage at 4 and A-weighted interference voltage Power AmpoutputU(F) dBu U(G) dBu U(A) dBu GAIN dB IN(A) dBu S/N-R. dB remarks LEVEL controls set to their clockwise margin CPS1SPEAKER OUT A&B-67-56-6932.5-102.5105 INPUT A&B R(Q) = 50 CPS2SPEAKER OUT A&B-67-56-6933.5-102.5105 INPUT A&B R(Q) = 50 LEV

29、EL controls set to their counterclockwise margin CPS1SPEAKER OUT A&B-68-57-70/ INPUT A&B R(Q) = 50 CPS2SPEAKER OUT A&B-68-57-70/ INPUT A&B R(Q) = 50 12. Dimensions and weight Power amplifierweightDimensions in mm CPS115kg483 x 132.5 x 385.5 CPS216kg483 x 132.5 x 385.5 RadioFans.CN 收音机爱好者资料库 RadioFa

30、ns.CN 收音机爱好者资料库 RadioFans.CN 收音机爱好者资料库 RadioFans.CN 收音机爱好者资料库 Page 1 / 8 Ersatzteilliste - Bill of Materials 170074CPS 1 US 120V POWER-AMP Pos. Nr. Ref. No. Best. Nr. Part No.BezeichnungDescription ZubehrAccessories & packing material 355745OWNERS MANUAL CPS 1/2 owners manual CPS 1/2 354617KABEL-

31、NETZ UL/CSA 15A/125Vpower cord US 337053SCHUTZHLLE 650X800X0,08 poly bag 306482KRT. 2 HE 556X507X178carton 355741STYROPOR-EINLAGE S900/Q44 filler, foam 355742STYROPOR-PL. 500X370X20filler, carton Mechanische TeileCabinet material G0010343270GLRI GBPC 3504 rectifier GBPC-P 3504 S0010346720SCHALTER-NE

32、TZ ESB-99888V power switch 354691BUCHSENLEISTE 3POL connector female 3-pole 341382KNOPF-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 3

33、46790KABEL-KONFEKT 8POL 0.300Mribbon cable assy 8way 349612KABEL-KONFEKT 8POL 0.400Mribbon 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

34、 mains transformer 120/240V 348805WI-SO PTC K155 100GRADsafety component PTC 348341FEDERLEISTE 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.

35、5 connector 4.8mm faston CNGN1330269FL.STECKER 6.3/0.8 connector 6.3mm faston CN001344862MESSERLST. 8POL connector male 8-pin CN002348334STIFTLEISTE 3POL MLSSconnector male 3-pin CN003348334STIFTLEISTE 3POL MLSSconnector male 3-pin CN005348334STIFTLEISTE 3POL MLSSconnector male 3-pin CN007330269FL.S

36、TECKER 6.3/0.8 connector 6.3mm faston CN01X344862MESSERLST. 8POL connector male 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 CN

37、018341937MESSERLST. 4POL connector male 4-pin CN019330269FL.STECKER 6.3/0.8 connector 6.3mm faston CN020344862MESSERLST. 8POL connector male 8-pin CN08X343516FL.STECKER 4.8/0.5 connector 4.8mm faston RadioFans.CN 收音机爱好者资料库 Page 2 / 8 170074CPS 1 US 120V POWER-AMP Pos. Nr. Ref. No. Best. Nr. Part No

38、.BezeichnungDescription CN18X341937MESSERLST. 4POL connector male 4-pin CN20X344862MESSERLST. 8POL connector 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

39、electrolytic 10uF/35V C0005329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0006329021KO-KER 0.10MF 100V 20%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/100 C0012

40、351835KO-EL 4700.000MF 100V 20%cap electrolytic 4700uF/100 C0013351835KO-EL 4700.000MF 100V 20%cap electrolytic 4700uF/100 C0014351835KO-EL 4700.000MF 100V 20%cap electrolytic 4700uF/100 C0015341714KO-SO 0.10MF 275V 20% Ksafety cap 100nF/275V C0016329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C00173

41、29021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0018327366KO-EL 4.700MF 50V BIPcap electrolytic 4.7uF/50V C0019329021KO-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 electro

42、lytic 2200uF/35V C0025335935KO-EL 2200.000MF 35V cap electrolytic 2200uF/35V C0026343530KO-EL 47.000MF 50V cap electrolytic 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 C0030329021

43、KO-KER 0.10MF 100V 20%cap ceramic 100nF C0031329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0032341714KO-SO 0.10MF 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

44、 C0103335787KO-KER 15.0PF 100V 2%cap ceramic 15pF C0104335787KO-KER 15.0PF 100V 2%cap ceramic 15pF C0105301470KO-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

45、100pF C0109343532KO-EL 100.000MF 25V cap electrolytic 100uF/25V C0110343532KO-EL 100.000MF 25V cap electrolytic 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-

46、KER 0.10MF 100V 20%cap ceramic 100nF C0115329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0116343532KO-EL 100.000MF 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/

47、63V C0120356605KO-FOL 0.100MF 250V 5%cap mylar 100nF C0123301519KO-KER 10.0PF 500V 10%cap ceramic 10pF RadioFans.CN 收音机爱好者资料库 Page 3 / 8 170074CPS 1 US 120V POWER-AMP Pos. Nr. Ref. No. Best. Nr. Part No.BezeichnungDescription C0124301519KO-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 C0128329021KO-KER 0