Mackie-ART300A-as-sm 维修电路原理图.pdf

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1、ART300AActive LoudspeakerService Manual2002 MACKIE DESIGNS, INC.RadioFans.CN 收音机爱 好者资料库2ART300A Service Manual SERVICE ON THIS EQUIPMENT IS TO BE PERFORMED BY EXPERIENCED REPAIR TECHNICIANS ONLYRadioFans.CN 收音机爱 好者资料库3ART300A Service ManualCONTENTSSafety Instructions.2Introduction.4Active Speaker Sa

2、fety Test.5Overview.7Rear Panel .8Specifi cations.9Parts .10 Final Assembly.10 Amplifer Assembly.11 Amplifi er PCB Assembly.12 Input Board Assembly and PCB.14 RCF Parts Differences.15Main Circuit Board.16 Schematics Crossover .16 High Frequency Amplifi er.17 Low Frequency Amplifi er.18 Power Supply.

3、19 PCB Layout.20Input Board.21 Schematic.21 PCB Layout.224ART300A Service ManualIntroductionAbout this ManualThis manual contains the basic repair information for the ART series loudspeakers. For each model, the following information is supplied: Safety information Overview Rear panel view and featu

4、res Specifi cations and test details Parts list, containing a master parts list and sub-assembly parts Parts list differences between RCF and Mackie Industrial ART speakers Schematics PCB layout drawingIt is essential that you have a copy of the users manual as this contains the complete operating i

5、nstructions. Service Technical AssistanceMackie Designs, Service Technical Assistance, is available 8AM - 5PM PST, Monday through Friday for Authorized Mackie Service Centers, at 1-800-258-6883. Feel free to call with any questions and speak with a carefully-calibrated technician. If one is not avai

6、lable, leave a detailed message and a qualifi ed Mackoid will return your call asap.DisclaimerThe information contained in this manual is proprietary to Mackie Designs, Inc. The entire manual is protected under copyright and may not be reproduced by any means without express written permission from

7、Mackie Designs, Inc. SERVICE ON THIS EQUIPMENT IS TO BE PERFORMED BY EXPERIENCED REPAIR TECHNICIANS ONLY16220 Wood-Red Road NE, Woodinville, WA 98072 USATEL 888.337.7404, FAX 425.487.4337, UK +44.1268.571.212, FAX +44.1268.570.809 +industrialrcf-ITALY +39.0522.354.111, FAX +39.0522.926.208 +industri

8、alrcf.itFRANCE +33.3.8546.9160, FAX +33.3.8546.9161 +mercialwanadoo.frGERMANY +49.2572.96042.0, FAX +49.2572.96042.10 +industrialmackie.de5ART300A Service ManualYou must perform the following leakage test before returning any active speakers to your customer. Take every safety precaution to protect

9、yourself while doing this test. 1. Make a small loading RC circuit as shown in the diagram below, and connect the AC volt meter between the AC power source ground and any exposed metal on the unit under test.2. Connect the unit under test to an AC power source using a ground-lift adaptor, leaving th

10、e units safety ground fl oating. Turn the unit on.3. The meter reading should be less than 750mVAC (note: this is equivalent to 0.5mA of leakage current).4. Flip the plug over in the receptical so the hot and neutral are swapped. Verify that the reading is still less then 750mVAC. 5. If either readi

11、ng is greater than 750mVAC, then you must investigate and repair the speaker before returning it to your customer.Active speaker safety test6ART300A Service ManualSafety First!Before connecting and using the equipment, please read the Quick-Start Guide carefully and keep it for future reference.Warn

12、ingThis equipment has been designed to be installed by qualifi ed professionals only! There are many factors to be considered when installing professional sound reinforcement systems, including mechanical and electrical considerations, as well as acoustic coverage and performance. Mackie Industrial

13、strongly recommends that this equipment be installed only by a professional sound installer or contractor.1. Never install, connect, or disconnect the unit with the power supply on.2. Before powering up the speaker, make sure the voltage select switch corresponds to the AC Voltage supply.3. Make sur

14、e the safety ground on the power cord is properly grounded.4. To prevent the risk of electric shock, never open the unit. There are no user serviceable parts inside.5. To ensure normal cooling of the amplifi er, make sure the unit is well ventilated. Avoid exposure to direct sunlight or proximity to

15、 any heat source, dust, or dampness.InstallationA 1-3/8 (35mm) socket is provided in the bottom of the cabinet for mounting the loudspeaker on a speaker stand. The speaker can be suspended with approved rigging hardware. Always use at least two M10 threaded inserts located on opposite sides of the e

16、nclosure. The speaker must be positioned so that the weight of the enclosure is equally distributed over the two inserts.WarningNever attempt to suspend the ART Series loudspeakers by their handles. Consult a professional rigger or structural engineer prior to suspending loudspeakers from a structur

17、e not intended for that use. Always know the working load limit of the structure supporting the loudspeaker array. Always make sure that the rigging hardware minimum rating is at least fi ve times the actual load.7ART300A Service ManualOverviewThe ART300A is a full-range two-way professional active

18、speaker system that combines high power and wide bandwidth in a light-weight enclosure for fi xed-installation systems. The 12 low-frequency transducer, in combination with a 1 compression driver coupled to an integral 90 x 70 constant directivity polynomial horn, form an extremely powerful package

19、for any small to medium-sized sound reinforcement application.It features a balanced XLR input with a Mic/Line switch and a paralleled balanced XLR output for cascading multiple speakers. Rear panel controls also include Music and Voice equalization switches, a rotary volume control, and an input li

20、miter.The two built-in power amplifi ers provide 300W for the LF driver and 60W for the HF driver. The enclosure is constructed of high-strength polypropylene, with M10 threaded inserts on all four sides for rigging, and an integral locking 1-3/8 socket in the bottom for mounting on a standard speak

21、er stand.8ART300A Service ManualRear Panel1. INPUT is a balanced XLR input jack that accepts mic-level or line-level signals.2. OUTPUT is a balanced XLR output jack in parallel with the INPUT jack, allowing the signal to “loop through” for daisy-chaining speakers together.3. LINE/MIC switch for mic-

22、level or line-level signals at the INPUT.4. VOICE equalization switch ON provides a gentle boost at 3kHz and 6kHz.5. MUSIC equalization switch ON provides a low-frequency and high-frequency boost.6. LIMITER indicator illuminates when the limit-ing protection circuits are activated.7. OPERATE indicat

23、or illuminates when the POWER switch is turned on.8. VOLUME control adjusts the input-stage gain.9. POWER switch turns the AC power on and off.10. AC OUTLET for connecting AC power to an additional Mackie Industrial active speaker system.11. Grounding Terminal provides an additional safety grounding

24、 point.12. IEC AC Socket. Connect the detachable power cord to the socket. The protection fuse is also contained in the AC socket.CAUTION: Replace fuse only with the same type as indicated on the rear panel.ConnectionsThe XLR connectors use the following AES standard: Pin 1 = Ground (Shield) Pin 2 =

25、 Hot (+) Pin 3 = Cold ()12453810912 11769ART300A Service ManualSpecifi cationsSystem:Freq. Range (10 dB): 55Hz-19kHzFreq. Response (3 dB): 75Hz-16kHzHorz. Coverage Angle (6 dB): 90, averaged 1kHz-10kHzVert. Coverage Angle (6 dB): 70, averaged 1kHz-10kHzDirectivity Factor Q (DI): 10.0 (10.0), average

26、d 1kHz-10kHzSystem Sensitivity1: 101 dB, 1W1mRated Maximum SPL2: 126 dB 1 m (3.3ft) peakHF Protection: DynamicTransducers:Low Frequency: 12 (300 mm) diameter wooferHigh Frequency: 1 (25 mm) compression driver, horn loadedPreamp and Processor:Input Sensitivity: Mic In: 8mV Line In: 125mVInput Impedan

27、ce: Mic In: 650 unbalanced 1.3k balanced Line In: 10k unbalanced 19k balancedCrossover Frequency and Slope: 1.8kHz; 24 dB/octaveTime Alignment: Analog, 0.3 ms HF delaySpeaker Protection: Thermal, over-excursionMusic Equalization: +4.3 dB 65Hz +4.0 dB 12kHzVoice Equalization: +4.0 dB 3kHz +4.0 dB 6kH

28、zIndicators: Power ON, LimiterAmplifi ers:LF Amplifi er Power: 300 watts RMSHF Amplifi er Power: 60 watts RMSDistortion: 0.1% THD at rated powerAmp Protection: Thermal, limiter, short circuitPower Supply: 115/230 VAC, 2A, 50/60 HzPhysical: Enclosure: Asymmetrical trapezoidal, reinforced polypropylen

29、eMounting: Lockable 1-3/8 (35mm) stand mountRigging Inserts: 4 points, accepts M10 threaded hardwareInput/Output Connectors: 2 XLR balancedDimensions HxWxD: 24.4 x 15.4 x 12.3 (620 mm x 390 mm x 312 mm) Net Weight: 44.0 lb (20.0 kg)Testing: DC voltages: + 83 VDC - 83 VDC + 41 VDC - 41 VDC + 15 VDC -

30、 15 VDCDC offset: less than +/- 0.1 VDCBias: At idle, into 8 ohm loads after warm-up adjust R36 5.5 mV R39-R40 (low freq amplifi er) adjust R73 13 mV R81-R82 (high freq amplifi er)AC current draw: Less than 0.3 A at idle10ART300A Service ManualART300A Parts13112024 ART300A Final AssemblyPART # DESCR

31、IPTION QUANTITY NOTES21111060 WOOFER L12.123103350 INPUT ASSEMBLY.1 See page 14 23103360 AMPLIFIER ASSEMBLY.1 See next page23103450 ACCESSORY (FLOOR WEDGE ANTI-TIP-OVER THINGY) .123103620 WIRE ASSEMBLY.125110480 TWEETER N 350.133090090 CABINET FRONT 33526.133090400 CABINET REAR 34288 .133160530 WOOF

32、ER GASKET 21202.133221060 WOOFER GRILL 31809.133221130 CONTROL BOARD SHIELD 32656 .133890100 FEET 34287.433901250 HANDLE 31154.133901270 WIRE CABLE GROMMET 32498.133912130 ANTIVIBRATION 22867.433912160 TRANSFORMER SPACERS 23128.633921210 NUTS FOR MOUNTING INSERTS 22839.433921480 MOUNTING INSERTS 318

33、32 .433921510 GRILL SPACERS 32515.433921540 TWEETER MOUNTING PLATES 32655.233921580 SPACERS 33359 .833950280 MOUNTING INSERT COVER STICKERS (HEX) 23495.433951920 TRADEMARK BADGE 34672.133960580 WARRANTY MOD.1712 .133961560 INSTRUCTION GUIDE MOD.1743 .133993020 SHIPPING BOX 34673.133994990 BOX PACKIN

34、G 31914.233995000 BOX PACKING 31915.233995350 SHIPPING PALLET 33301 .0.083333995360 BOX COVER 33303.0.166633995370 ANGLE 1800 33302.0.333333995380 BOX PACKING 33368.243040390 SOUND ABSORBER FOAM SP.15 DENS.50 .2443900110 STOPPER PLUG.143900580 U-SHAPED RUBBER GASKET ESPACE200.0.00143900810 KNURLED K

35、NOB 32243 .143900820 GASKET 32181.1.243900830 GASKET 32266.2.0551180425 Screw, Hex, white galv, M6 x 18 mm, U5739 3055 .251190205 Screw, cylindrical, Allen, black galv, M5 x 10 mm, U5931 .451190336 Screw, cylindrical, Allen, black galv, M6 x 35, U5931 50762.451240411 Screw, cylindrical, Phillips, po

36、inted, black galv, 3.9 x 13 mm, U6954 .451992008 Screw, cylindrical, Phillips, black galv, for plastic, 4.2 x 20 mm.2051992010 Screw, roundhead, fl ange, Phillips, black galv, for plastic, 4.8 x 50 mm1652100101 Washer, fl at, 15 x 28 mm, white galv, U6592 .452100121 Washer, fl at, 6.4 x 12.5 mm, bla

37、ck galv, U6592 0174.1052201009 Washer, crinkle, 6 mm DIN6798 50383 .252301004 Washer, split, 6.4 mm U1751 171 1/2.259024072 PLASTIC BAG 600+100+100X1200.183483019 LINECORD, USA, C3C83-012E003.111ART300A Service Manual23103360 ART300A Amplifi er Assembly 115 VACPART # DESCRIPTION QUANTITY NOTES230204

38、00 AMPLIFIER PCB ASSEMBLY.1 See next page23102640 WIRE ASSEMBLY UL.123102650 WIRE ASSEMBLY UL.223102660 WIRE ASSEMBLY UL.123102670 WIRE ASSEMBLY UL.123102680 WIRE ASSEMBLY UL.123102750 WIRE ASSEMBLY UL.123102760 WIRE ASSEMBLY UL.133120230 HEATSINK 32924.133182100 TRANSFORMER SUPPORT 31180.133190190

39、REAR PANEL 34676.133950120 UL STICKER 33539.143900130 GROUND CONNECTOER 33610.143900840 BRASS SPACERS 10 MM .451150316 Screw, cylindrical, Phillips, black galv, M4 x 10 mm, U7687 6233.451150325 Screw, cylindrical, Phillips, white galv, M4 x 14 mm, U7687 6643.1051150346 Screw, cylindrical, Phillips,

40、black galv, M4 x 25 mm, U7687.451180545 Screw, Hex, white galv, M8 x 65 mm, U5737 .151250211 Screw, fl at, CSK, Phillips, blck galv, point, 2.9 x 9.5 mm, U6955 12596.452100113 Washer, fl at, 4,3 x 9, white galv, U6592 169 .952100126 Washer, large fl at, white galv, 9 x 24 mm, U6593 .152100127 Washer

41、, white galv, 8.5 x 32 mm, 166 .152201003 Washer, crinkle, 4 mm DIN 6798-A.252201005 Washer, crinkle, 8 mm DIN6798 176.153102010 Nut, M 4 U5588-A-6S 01880 1/2.353301026 Nut, NYLOCK, M8 INOX.153301035 Nut, fl anged, white galv, M 4 DIN 6923.1881751094 TRANSFORMER C1T51-079A.183111142 FUSE C3P11-003T5

42、02 5 AT.283242016 ILLUMINATED POWER SWITCH C3S42-016 .183444023 FASTON CONNECTOR, MALE C3C44-013M001 .969/4.183482004 RECESSED SOCKET, MALE C3C82-004M003.183482006 RECESSES SOCKET, FEMALE C3C82-006F003.197119549 GREEN/YELLOW WIRE 1 MMQ .10PART # DESCRIPTION NOTES11401023 Woofer L12ART300A Boxed woof

43、er (21111060 plus shipping box, packing etc)11440039 Woofer Recone kit L12ART300A Boxed Recone kit15420008 Tweeter ART 300/300A Boxed Tweeter (25110480 plus shipping box, packing)15410084 Tweeter diaphragm M84 Boxed Tweeter diaphragmService Replacement Parts (boxed and packaged, ready to ship out)12

44、ART300A Service Manual23020400 ART300A Amplifi er PCB AssemblyPART # DESCRIPTION QUANTITY NOTES32030380 BARE CIRCUIT BOARD MR 31851-6.1 See pages 16-2032180670 SUPPORT 13391.433120240 HEATSINK 32922.133120250 HEATSINK 32923.133910140 INSULATORS 33912 .1342901040 ANTISTATIC LABEL 31101.151160225 Scre

45、w, fl at, CSK, Phillips, black galv, M3 x 12 mm, U7688 .1852100105 Washer, fl at, 3,2 x 7, white galv, U6592 5320 .852201002 Washer, crinkle, 3 mm DIN 6798 11628 1/2.1853101005 Nut, M 3 U5588-A-6S 11625 .1881121000 RESISTOR, C1R21-251J0R0 1/4W5% 0 .6681121001 RESISTOR, C1R21-251J010 1/4W5% 1.2811210

46、17 RESISTOR, C1R21-251J220 1/4W5% 22.481121021 RESISTOR, C1R21-251J470 1/4W5% 47.481121025 RESISTOR, C1R21-251J101 1/4W5% 100.1281121032 RESISTOR, C1R21-251J391 1/4W5% 390.481121033 RESISTOR, C1R21-251J471 1/4W5% 470.281121034 RESISTOR, C1R21-251J561 1/4W5% 560.681121037 RESISTOR, C1R21-251J102 1/4W

47、5% 1K .981121040 RESISTOR, C1R21-251J182 1/4W5% 1.8K .681121041 RESISTOR, C1R21-251J222 1/4W5% 2.2K .2481121042 RESISTOR, C1R21-251J272 1/4W5% 2700.181121043 RESISTOR, C1R21-251J332 1/4W5% 3.3K .381121045 RESISTOR, C1R21-251J472 1/4W5% 4.7K .581121047 RESISTOR, C1R21-251J682 1/4W5% 6.8K .281121049 R

48、ESISTOR, C1R21-251J103 1/4W5% 10K .1781121051 RESISTOR, C1R21-251J153 1/4W5% 15K .181121055 RESISTOR, C1R21-251J333 1/4W5% 33K .181121057 RESISTOR, C1R21-251J473 1/4W5% 47K .581121058 RESISTOR, C1R21-251J563 1/4W5% 56K .181121063 RESISTOR, C1R21-251J154 1/4W5% 150K .381121064 RESISTOR, C1R21-251J184

49、 1/4W5% 180K .281121065 RESISTOR, C1R21-251J224 1/4W5% 220K .181121069 RESISTOR, C1R21-251J474 1/4W5% 470K .181121070 RESISTOR, C1R21-251J564 1/4W5% 560K .181121071 RESISTOR, C1R21-251J684 1/4W5% 680K .181121073 RESISTOR, C1R21-251J105 1/4W5% 1M .581121079 RESISTOR, C1R21-501J2R7 1/2W5% 2.7 . 1/2 wa

50、tt 481121114 RESISTOR, C1R21-501J222 1/2W5% 2.2K . 1/2 watt 281121166 RESISTOR, C1R21-251J106 1/4W5% 10M .181121734 RESISTOR, C1R21-251F1002 1/4W1% 10K .881121859 RESISTOR, C1R21-251F2003 1/4W1% 200K .181127275 RESISITOR, FUSIBLE, C1R27-162K470 1.6W10% 47.281138033 RESISTOR, HIGH VOLTAGE C1R38-501J4