EV_P1201,_P1202_Power_Amp_Service_Manual电路图.pdf

《EV_P1201,_P1202_Power_Amp_Service_Manual电路图.pdf》由会员分享，可在线阅读，更多相关《EV_P1201,_P1202_Power_Amp_Service_Manual电路图.pdf（22页珍藏版）》请在收音机爱好者资料库上搜索。

1、 P 1201 P 1202 MODULAR PRECISION SERIES SERVICE RadioFans.CN 收音机爱 好者资料库 1 / 7 Technical Specifications: X1201 / P1201 Amplifier at rated conditions, 8 output load, unless otherwise specified. X1201 / P1201 Load Impedance 8 4 2 Maximum Midband Output Power THD = 1%, 1kHz 750 W 1200 W 1600 W Rated Out

2、put Power THD 0.2%, 20Hz . 20kHz 500 W 1000 W - Max. Single Channel Output Power Dynamic-Headroom, IHF-A 850 W 1450 W 1700 W Maximum RMS Voltage Swing THD = 1%, 1kHz 86 V Voltage Gain at 1kHz 33 dB Slew Rate at 1kHz 40 V/s Power Consumption at 1/8 maximum output power 4 870 W Input Sensitivity at ra

3、ted output power 4, 1kHz 1.4 V THD at rated output power, MBW = 80kHz, 1kHz 0.05 % IMD-SMPTE 60Hz, 7kHz 0.08 % DIM30 3.15kHz, 15kHz 300 / 200 Signal to Noise Ratio A-weighted, non internal summing mode 106 dB Power Requirements 240V, 230V, 120V, 100 V, 50Hz . 60Hz, factory configured Protection Audi

4、o limiters, 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), mm 483 x 132.5 x 426 Weight 17 kg Optional Input transformer NRS 90208 (121 641) Rear-rackmount 15,5“ Rear-rackmoun

5、t 18“ NRS 90235 (112 733) NRS 90223 (112 701) RadioFans.CN 收音机爱 好者资料库 2 / 7 MEASURED DATAX1201 / P1201 The measured data apply to the following appliances: Unit ModelUnit NumberMains VoltageMains Frequency X1201112 736230V50 - 60 Hz X1201240V50 - 60 Hz X1201100V50 - 60 Hz X1201120V50 - 60 Hz P120117

6、0 149230V50 60 Hz P1201170 148120V50 60 Hz P1201170 148100V50 60 Hz MEASURED DATA: X1201 / P1201 Printed boards name and corresponding EDP numbers: Printed boards EDP numbers 100V120V230V240V 81344813448134481344 841998419984194 Printed board parts 84194 / 84199Index Amplifier - PCB84194/1 / 84199/1

7、 Bus - PCB84194/2 / 84199/2 Main - PCB84194/3 / 84199/3 LED - PCB84194/4 / 84199/4 Testing Conditions unless differently stated: - Measuring tolerance:X= 1.5dB - Measuring frequency:f = 1kHz - Stated level values referred to:U = 775mV (0dBu) - XLR socket pin-assignment:PIN 1 = GROUND/SHIELD PIN 2 =

8、+ INPUT PIN 3 = - INPUT - Source impedance for signal-feed via XLR socket: R(Q) = 50 - The printed board assembly 84194 / 84199 offers service connectors. 84194/2 / 84199/2 CNS1X 84194/2 / 84199/2 CNS2X 84194/1 / 84199/1 CN10 / CN11 PINAssignmentPINAssignmentPINAssignment 1-Vcc1LIM SwitchCN10 2BIAS

9、+HOT2-15V1FLOAT. Voltage 3BIAS -HOT3SYMMETRY2GNDA 4FAN Voltage4+15V3GNDA 5+Vcc5GNDACN11 6BIAS +COLD6Speaker A1LIM Switch 7BIAS -COLD7Relay/Protect2-15V 8TEMP Heat sink8n.c.3-15V RadioFans.CN 收音机爱 好者资料库 3 / 7 1. Operating Voltage:U(B) = 230V 50Hz . 60Hz / U(B) = 120V 50Hz . 60Hz 2. Operating Voltage

10、Deviation Range:-30% . +10% 3. Power Consumption - Driven with sine signal f = 1kHz X1201 / P1201Output Power Idling Power Consumption50 - 70 W Maximum Power Consumption (RL=4)1870 W1200 W Nominal Power Consumption (RL=4)1730 W1000 W Standard Power Consumption (RL=4)590 W100 W Power Consumption at 1

11、/8 of the Max. Output Power720 W156 W Power Consumption at 1/8 of the Max. Output Power at 10 % Mains Overvoltage 870 W180 W 4. Settings/Adjustments 4.1. IDLING CURRENT ADJUSTMENT Connect a DC-voltmeter to the BIAS measuring points (on the printed board assembly 84194/2 / 84199/2, see service connec

12、tors) and adjust the idling current via the trimmers VR101 / VR301 (on the printed board assembly 84194/1 /84199/1). Adjustment has to be performed for HOT / COLD U(DC) = 7.5mV and at normal room temperature. If the power amplifier has previously been operated, it has to be given several hours of ti

13、me for regaining normal temperature. 4.2. FLOATING - SYMMETRY Checking and setting the floating voltage symmetry has to be performed immediately after adjusting the idling current. Operate the power amplifier in idling condition. Measuring between the measuring points CNS1X.1 / CNS2X.5 and CNS1X.5 /

14、 CNS2X.5 with a DC-voltmeter, set the floating voltage symmetrical to GROUND via VR1 on the printed board assembly 84194/1 (84199/1). The absolute voltage value is not critical but the symmetry of the floating voltage over GROUND. Checking the set floating voltage is possibly by use of a DC-voltmete

15、r and measuring between on the service connector between CNS2X.3 and CNS2X.5 on the printed board assembly 84194/2 (84199/2) as well as on the pin terminal between CN10.1 and CN10.2/3 on the printed board assembly 84194/1 (84199/1). The measured DC voltage value should be 0 volts. 4.3. VCA - OFFSET

16、Rhythmically open and short-circuit the pin contacts CNS2X.1 and CNS2X.2 on the printed board assembly 84194/2 (84199/2). Use VR100 to adjust the power amplifier output to their minimum offset value (with oscilloscope to minimal peak value or to the audible minimum volume of the interfering pulse).

17、5. Function Test 5.1. OUTPUT Offset Voltage DC-measurement at the loudspeaker outputs with U(DC) 10mV. 5.2. LIMITER 5.2.1. Attenuation Test Power amplifier driven with a 1 kHz signal up to U(A) = 69 V (without load). Increase the input voltage by 10dB. The LIMITER LED lights and the output voltage a

18、scents by approximately 2dB to approximately 85 V while slightly clipping. The distortion rate of the limited signal is at THD = 1.0 . 1.5%. Further increasing the input signal up to a value of +21dBu should not result in remarkably higher clipping. 5.2.2. Attack and Release Times Test has to be per

19、formed without load resistors connected. 1.) Drive the power amplifier with a burst signal (f = 1kHz, 10 cycles, rate: 0.5 sec.) and U(E) = +16dBu at the input. 4 / 7 2.) Monitor the output signal via oscilloscope. After 3 to 4 signal periods, the limiter has controlled the high distortion level dow

20、n to a minor residual distortion (THD = 1% . 1.5%). Attack time: 3-4 msRelease time: 30-40 ms 5.3 POWER-ON DELAY Make sure that the signal is present at the power amplifier input. Switch the power amplifier via the Power-ON switch on. Approximately 2 seconds after switching the power on, the signal

21、will be present at the output. 5.4 FAN CONTROL Upon switching the power amplifiers power on, the fans will run for approximately 2 seconds and stop when the power amplifier has regained normal temperature. In idling condition (Power-ON, no signal present) the fans are switched between SLOW and OFF m

22、ode, depending on the heat sinks temperature. Removing the connector CN5 lets the fans run in FAST mode. The fan voltage is measured between pin CNS2X.4 and pin CNS1X.4:SLOW ca. 17.5 VFAST ca. 29.0 V 5.5. SOAR-PROTECTION TEST Drive the power amplifier up to 69 V in 4. Parallel-connect a 1? resistor.

23、 The protection circuit reacts and continuously tries to re-start! The protect-LED lights. Repeat the test with a 2? resistor. The power amplifier should not switch off. Caution: If the SOAR-protection does not react in case of mains undervoltage, repeat the test with parallel- connecting a 0.5 resi

24、stor instead of a 1. 5.6. SHORT-CIRCUIT CURRENT-LIMITING TEST - drive each channel with a burst signal (f = 1kHz, 1-3 cycles, rate 1 sec.), with U(E) = 0dB - connect a 1 load resistor - the short-circuit current-limiter limits the output voltage at the load resistor symmetrically (monitor via oscill

25、oscope) to a peak voltage value of 40 V (approximately 40 A maximum Peak Output Current). 5.7. DC-VOLTAGE PROTECTION TEST - feed a test signal ( f = 5 - 7 Hz ) to the power amplifier without load resistor connected. - starting at an input voltage of approximately 5 Veff, the protection circuit react

26、s and continuously tries to re- start! The protect-LED blinks in the same frequency. - repeat the test with f = 14Hz. The power amplifier should not switch off. 5.8. HF-PROTECTION TEST Caution: Perform tests without load resistor connected to the power amplifier only. Feed a +20dBu sine burst signal

27、 f = 100kHz (40ms ON, 960ms OFF) to the power amplifier input. The protection circuit has to react. The power amplifier continuously tries to re-start. The PROTECT-LED blinks in the same frequency. Repeat the test with f = 50kHz. The power amplifier should not switch off. 5.9. INDICATOR TEST Feed a

28、1kHz sine signal while slowly increasing it. At approximately -26dBu the SIGNAL-LED starts lighting and at approximately +8dBu the LIMIT-LED lights. 5 / 7 6. Level 6.1. VOLTAGE AMPLIFICATION UnitInputU(E)Measuring point U(A)U(A)GainLoad Resistor Test frequency X1201/ P1201 CH. A or B+5.8dBuOUTPUT+39

29、dBu69.2V33.2?1kHz X1201/ P1201 CH. A + B-0.2dBuOUTPUT+39dBu69.2V39.2?1kHz 6.2. MAXIMUM INPUT LEVEL: U(E) = +21dBu 7. GROUND LIFT-switch The circuit ground (at the input or output connector) is measured against the enclosure ground (contact on the ground-screw on the rear of the appliance or ground c

30、ontact on the mains plug). Switch set toGROUNDED: R = 0 UNGROUNDED : R = 5 8. Amplitude Non-Linearity - measured with a 8 load resistor connected - MBW = 80kHz TestAt nominal output powerRemarks THD+N ( f = 1kHz )0.05% IMD-SMPTE0.08%60Hz, 7kHz DIM 300.03%3.15kHz, 15kHz 9. Frequency Response Linear F

31、requency Response (mind border frequencies) Lower border frequencyUpper border frequency -3dBfu 104INPUT A&B R(Q) = 50 Only channel A operated. Remove the resistors R291 / R292 off the printed board assembly 84194/2. X1201 / P1201 SPEAKER OUT- 65- 54- 6733- 100 106INPUT A R(Q) = 50 6 / 7 11. Heat Si

32、nk Temperature DC-voltages measured between CNS1X.8 and CNS2X.5 (GNDA) Heat sink temperature25C40C60C80C100C120C130C 1.5 V3.0 V6.0 V9.0 V12.0 V13.0 V13.8 V The switch-off point is at approx. 130 C. The power amplifier enters Protect-Mode. 12. SLOT-Specification The power amplifier X1201 (P1201) is c

33、apable of providing a maximum current of 300mA for individual modules with 15V operating voltage. - measured at 10 % mains undervoltage. Power consumption: Xi-11 / Xi-21 Input modulesApprox. 18 mA V Front modulesApprox. 70 mA I-1 Input moduleApprox. 18 mA MRx-Front modulesApprox. 70 mA 13. Dimension

34、s and Weight Power amplifierWeightDimensions in mm X1201 / P120117kg483 x 132.5 x 385.5 14. Input Connector Pin-Assignment - CN7 and Module Slot Connectors - CNSLA CN7CNSLACNSLA PINAssignmentPINAssignmentPINAssignment 1-15V1a/1bn.c.9aKA1 (Module ID) 2GNDA2a/2bn.c.9bKA2 (Module ID) 3Sensout A3a/3bn.c

35、.10a/10b+15V 4Return A4a/4bn.c.11a/11bAMPA2 (alt. Output 1in2) 5Sensin A5aKA4 (Module ID)12a/12bLIMINA (Limiter Input) 6Signal A5bKA5 (Module ID)13a/13bBUSREFA 7GNDA6a/6b-15V14a/14bSIGNALA1 (Signal Out) 8GNDA7aGNDA15a/15bSWA1 (Select) 9Signal B7bKA3 (Module ID)16a/16bSIGNAL M (Signal In) 10Sensin B8

36、a/8bGNDA 11Return B 12Sensout B 13GNDA 14+15V 7 / 7 15. Remote Control Connector Pin-Assignment CNRC / CNRC5V CNRCCNRCCNRC5V PINAssignmentPINAssignmentPINAssignment 1AMPA218n.c.1GND-D 2+5V19HTSNKTMP2GND-D 3COLDCUR+20n.c.3POWER-ON 4+5V21HOTCUR- (68/)4GND-D 5COLDCUR-22n.c.5GND-D 6KA123HOTCUR+ (68/)6+5

37、V 7LIM-OUTA24n.c.7+5V 8KA225AMPB2 (68/)8LED-STANDBY 9n.c.26GND-D 10KA327GND-D 11POWER-ON28GND-D 12KA429GND-D 13STBYLED30AID5 (10/) 14KA531AID4 15TIMER32AID3 16n.c.33AID2 17RELAYDRV34AID1 16. Amplifier-ID AID1:1MSB AID2:1 AID3:1 AID4:1 AID5:0LSB Bin: 11110 Hex: 1E Ersatzteilliste - Bill of Materials

38、170149P 1201 230V Pos. Nr. Ref. No. Best. Nr. Part No.BezeichnungDescription ZubehrAccessories & packing material 359919OWNERS MANUAL P 1201/2 owners manual 335589FUSS-GUMMI SJ 5009 SW rubber foot 300425KABEL-NETZ 2.0 M 10A power cable Europe 337053SCHUTZHLLE 650X800X0,08 poly bag 306482KRT. 2 HE 55

39、6X507X178carton 357751STYROPOR-EINLAGE X1201 filler, carton, foam 355742STYROPOR-PL. 500X370X20filler, carton, foam Mechanische TeileCabinet material B0010341343BUCHSE-SPEAKON-VIERECK 4POLspeaker socket 4-pole G0010343270GLRI GBPC 3504 rectifier GBPC-P 3504 S0010346720SCHALTER-NETZ ESB-99888V power

40、switch 341382KNOPF-TASTE 20X8 SW 3.3push button black 351214GRIFF 109 MM GRAU 3HEhandle 109 mm 348415LFTER TYP FBAO8A24H DCfan dc 24V 348387KABEL-KONFEKT 10POL 0.300Mribbon cable assy 10-way 349610KABEL-KONFEKT 10POL 0.520Mribbon cable assy 10-way 356956KABEL-KONFEKT 12POL 0.320Mribbon cable assy 12

41、-way 354999KABEL-KONFEKT 12POL 0.350Mribbon cable assy 12-way 356957KABEL-KONFEKT 4POL 0.420Mribbon cable assy 4-way 356663KABEL-KONFEKT 14POL 0.250Mribbon cable assy 14-way 359962FB.P 1201 BED front panel P 1201 359963RW.P1201/230V BEDrear panel P1201 351359DEC.3HE-EV-LACK/P2-3000 LACtop cover 3599

42、17BLEND.P1201/2 LEER LACblank panel 359965BLEND.O-1 BEDpanel 0-1 359966BLEND.I-11 BEDpanel I-11 356867RKT X1201/P1201 230V mains transformer 230V 348805WI-SO PTC K155 100GRADsafety component PTC 348341FEDERLEISTE 3POL CE100-connector female 3-pole 813448PCBAR:X1201/X1202 N 5input pcb assy CN01Y35666

43、0STIFTLEISTE 2X 7POL 1-connector male 7x2 pins C0003340524KO-EL 100.000MF 16V cap electrolytic 100uF/16V C0004340524KO-EL 100.000MF 16V cap electrolytic 100uF/16V C0005329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0006329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0501329021KO-KER 0.10MF 100V 20%ca

44、p ceramic 100nF C0502329021KO-KER 0.10MF 100V 20%cap ceramic 100nF C0503301543KO-KER 330.0PF 500V 10%cap ceramic 330pF C0504301543KO-KER 330.0PF 500V 10%cap ceramic 330pF C0505301543KO-KER 330.0PF 500V 10%cap ceramic 330pF C0506301543KO-KER 330.0PF 500V 10%cap ceramic 330pF C0507301558KO-KER 33.0PF

45、100V 2%cap ceramic 33pF C0508301558KO-KER 33.0PF 100V 2%cap ceramic 33pF 1 / 8 Pos. Nr. Ref. No. Best. Nr. Part No.BezeichnungDescription C0509301558KO-KER 33.0PF 100V 2%cap ceramic 33pF C0510301558KO-KER 33.0PF 100V 2%cap ceramic 33pF C0511346841KO-EL 47.000MF 16V cap electrolytic 47uF/16V C0512346

46、841KO-EL 47.000MF 16V cap electrolytic 47uF/16V C0513340523KO-EL 22.000MF 16V cap electrolytic 22uF/16V C0514340523KO-EL 22.000MF 16V cap electrolytic 22uF/16V C0515340523KO-EL 22.000MF 16V cap electrolytic 22uF/16V C0516340523KO-EL 22.000MF 16V cap electrolytic 22uF/16V C0517329021KO-KER 0.10MF 100

47、V 20%cap ceramic 100nF C0518329021KO-KER 0.10MF 100V 20%cap ceramic 100nF D0501304360DIODE 1N 4007 GEGURTETdiode 1N 4002 D0502304360DIODE 1N 4007 GEGURTETdiode 1N 4002 H0001343457DICKS-NETZW. 8PIN 2%work 8x10k Ohm H0002343457DICKS-NETZW. 8PIN 2%work 8x10k Ohm I0501327197IC NE 5532 P 2FACH OPIC NE 5532 N I0502327197IC NE 5532 P 2FACH OPIC NE 5532 N JS501351815BUCHSE-FL. XLR 3POL PRINTBxlr connector female 3-pole JS502351815BUCHSE-FL. XLR 3POL PRINTBxlr connector female 3-pole JS503351816STECKER-FL. XLR 3POL PRINTBxlr connector male 3-pin JS504351816STECKER-FL. XLR 3POL PRINTBxlr connector