Ecler-MPA280-pwr-sm维修电路原理图.pdf

上传人：cc518

文档编号：143429

上传时间：2022-07-02

格式：PDF

页数：21

大小：1.27MB

《Ecler-MPA280-pwr-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《Ecler-MPA280-pwr-sm维修电路原理图.pdf（21页珍藏版）》请在收音机爱好者资料库上搜索。

1、 MPA280 SERVICE MANUAL RadioFans.CN 收音机爱好者资料库SERVICE MANUAL MPA280 INDEX - BLOCK DIAGRAM - SCHEMATICS - COMPONENTS LOCATION SCHEMA - TESTING AND QUALITY CONTROL - TECHNICAL CHARACTERISTICS - WIRING DIAGRAM - MECHANICAL DIAGRAM - PACKING DIAGRAM RadioFans.CN 收音机爱好者资料库PARTS LIST:PRINTED CIRCUIT 11.0

2、649REV:MODEL: MPA280DRW.N 33.0259 and 260PLREPLACES:DATE: 15.01.98 SHEET 1 OF 5 REPLACED BY:REFERENCEVALUECODEC10122/35FCCE200220C102C100pFCXCN21000C10322/35FCCE200220C104C100pFCXCN21000C10522/35FCCE200220C106C100pFCXCN21000C10722/35FCCE200220C108C100pFCXCN21000C10910/50FCCE250100C11010/50FCCE250100

3、C11110/50FCCE250100C11210/50FCCE250100C113C12pFCXCN11200C114C47pFCXCN14700C11547/16FCCE100000C11618nFCXCN40180C1174.7nFCXCN40047C118Not assembledC11933nFCXCN40330C12047/16FCCE100000C12147/16FCCE100000C122C47pFCXCN14700C12347/16FCCE100000C12447/16FCCE100000C125C47pFCXCN14700C12647/16FCCE100000C127470

4、nFCXCN44700C128470nFCXCN44700C12922/35FCCE200220C13010/50FCCE250100C13110/50FCCE250100C13222/100FCCE200220C133100nFCXCN41000C13422/35FCCE200220C13522/100FCCE350220C136100nFCXCN41000C13733nFCXCN40330C138470nFCXCN44700C139470nFCXCN44700C14010/50FCCE250100C14110/50FCCE250100C14222/100FCCE350220C143100n

5、FCXCN41000C14422/35FCCE200220C14522/100FCCE350220C146100nFCXCN41000C14733nFCXCN40330C14822/35FCCE200220C149470nFCXCN44700C150470nFCXCN44700C15122/35FCCE200220C15210/50FCCE250100C15310/50FCCE250100C15422/100FCCE350220C155100nFCXCN41000C15622/35FCCE200220C15722/100FCCE350220C158100nFCXCN41000PARTS LIS

6、T:PRINTED CIRCUIT 11.0649REV:MODEL: MPA280DRW.N 33.0259 and 260PLREPLACES:DATE: 15.01.98 SHEET 2 OF 5 REPLACED BY:REFERENCEVALUECODEC15933nFCXCN40330C160470nFCXCN44700C161470nFCXCN44700C16222/35FCCE200220C16310/50FCCE200220C16410/50FCCE200220C16522/100FCCE350220C166100nFCXCN41000C16722/35FCCE200220C

7、16822/100FCCE350220C169100nFCXCN41000C17033nFCXCN40330C17110/50FCCE250100C17210/50FCCE250100C17310/50FCCE250100C17410/50FCCE250100C17510000/63FCCE321000C17610000/63FCCE321000C177100nFCXCN41000C178100nFCXCN41000D101BAS16FCXDDBAS16D102Green led FCLED300VED103BAS16FCXDDBAS16D104Green ledFCLED300VED105B

8、AS16FCXDDBAS16D106Green ledFCLED300VED107BAS16FCXDDBAS16D108Green ledFCLED300VED109BAS16FCXDDBAS16D110BYD17MFCXDD40070D111BYD17MFCXDD40070D112Z4.7FCXZ000047D113Red ledFCLED300ROD114BAS16FCXDDBAS16D115BYD17MFCXDD40070D116BYD17MFCXDD40070D117Z4.7FCXZ000047D118Red ledFCLED300ROD119BAS16FCXDDBAS16D120BY

9、D17MFCXDD40070D121BYD17MFCXDD40070D122Z4.7FCXZ000047D123Red ledFCLED300ROD124BAS16FCXDDBAS16D125BYD17MFCXDD40070D126BYD17MFCXDD40070D127Z4.7FCXZ000047D128Red ledFCLED300ROD129Z16FCXZ000160D130Z16FCXZ000160D131FB3506LFCREC35065HS101SERADHE 1237FCRAD12370HS102SERADHE 1237FCRAD12370HS103SERADHE 1237FCR

10、AD12370HS104SERADHE 1237FCRAD12370HS105HEAD SINK 2906.6FCRAD29060HS106HEAD SINK 2906.6FCRAD29060IC101TL072FCIC072010PARTS LIST:PRINTED CIRCUIT 11.0649REV:MODEL: MPA280DRW.N 33.0259 and 260PLREPLACES:DATE: 15.01.98 SHEET 3 OF 5 REPLACED BY:REFERENCEVALUECODEIC102TL072FCIC072010IC103TL072FCIC072010IC1

11、04TL072FCIC072010IC105TL072FCIC072010IC106TL072FCIC072010IC107TL072FCIC072010IC108TDA7294FCIC729400IC109TDA7294FCIC729400IC110TDA7294FCIC729400IC111TDA7294FCIC729400J101YKC21-3035FCBASR0600J102YKC21-3035FCBASR0600J103YKD31-0496FCCTJAL100J104YKD31-0496FCCTJAL100J105350430-1FCCTAMP040J106350430-1FCCTA

12、MP040J107350430-1FCCTAMP040L10168HFCCHK00680L10268HFCCHK00680L10368HFCCHK00680L10468HFCCHK00680L1051HFCIND00200L1061HFCIND00200L1071HFCIND00200L1081HFCIND00200Q101BC857BFCXTT08570Q102BC857BFCXTT08570Q103BC857BFCXTT08570Q104BC857BFCXTT08570Q105MJE15030FCTR150300Q106MJE15031FCTR150310R101100 OhmsFCXR0

13、21000R102470kFCXR054700R103100 OhmsFCXR021000R104470kFCXR054700R105100 OhmsFCXR021000R106100kFCXR051000R107100 OhmsFCXR021000R108100kFCXR051000R10910kAx2FCPR210040R11022kFCXR042200R11122kFCXR042200R112100kFCXR051000R11310kAx2FCPR210040R11422kFCXR042200R11510kAx2FCPR210040R11622kFCXR042200R11722kFCXR

14、042200R11822kFCXR042200R119100kFCXR051000R12010kAx2FCPR210040R1211k5FCXR031500R122MF332kFCXR153320R123MF1kFCXR131000R124MF1kFCXR131000R1251k5FCXR031500R126MF340kFCXR153400R127MF1kFCXR131000PARTS LIST:PRINTED CIRCUIT 11.0649REV:MODEL: MPA280DRW.N 33.0259 and 260PLREPLACES:DATE: 15.01.98 SHEET 4 OF 5

15、REPLACED BY:REFERENCEVALUECODER128MF1kFCXR131000R129MF1kFCXR131000R130MF340kFCXR153400R131MF1kFCXR131000R1321k5FCXR031500R133MF1kFCXR131000R134MF332kFCXR153320R135MF1kFCXR131000R1361k5FCXR031500R137150kFCXR051500R13875kFCXR047500R139150kFCXR051500R14022kFCXR042200R141100kFCXR051000R14222kFCXR042200R

16、143MF97k6FCXR149760R144MF97k6FCXR149760R145Not assembledR146Not assembledR147MF36k5FCXR143650R148100kFCXR051000R14922kFCXR042200R150MF1kFCXR131000R15122kFCXR042200R15210kFCXR041000R15333kFCXR043300R15422kFCXR042200R15520 OhmsFCXR012000R1562k2FCXR032200R157MF18k2FCXR141820R15822kFCXR042200R15922kFCXR

17、042200R16033kFCXR043300R161MF10kFCXR141000R16222kFCXR042200R16320 OhmsFCXR012000R1642k2FCXR032200R165MF18k2FCXR141820R166MF1kFCXR131000R16722kFCXR042200R16822kFCXR042200R16933kFCXR043300R170MF10kFCXR141000R171MF1kFCXR131000R17222kFCXR042200R1732k2FCXR032200R17420 OhmsFCXR012000R175MF18k2FCXR141820R1

18、7622kFCXR042200R177MF10kFCXR141000R17833kFCXR043300R179MF1kFCXR131000R18022kFCXR042200R1812k2FCXR032200R18220 OhmsFCXR012000R183MF18k2FCXR141820R18422kFCXR042200R1853kFCXR033000PARTS LIST:PRINTED CIRCUIT 11.0649REV:MODEL: MPA280DRW.N 33.0259 and 260PLREPLACES:DATE: 15.01.98 SHEET 5 OF 5 REPLACED BY:

19、REFERENCEVALUECODER1863kFCXR033000R18720 OhmsFCXR012000R18820 OhmsFCXR012000R18920 OhmsFCXR012000R19020 OhmsFCXR012000R19120 OhmsFCXR012000R19220 OhmsFCXR012000R19320 OhmsFCXR012000R19420 OhmsFCXR012000R1956k8FCXR036800R1966k8FCXR036800R1976k8FCXR036800R1986k8FCXR036800R1993kFCXR033000R2003kFCXR0330

20、00S101Dial switch RS003-A066BQFCINTR0500S102Switch 17128FCINTD4000NORMS FOR CHECKING THE MPA POWER AMPLIFIER. - Connect a charge of 4 in each output channel CH1 CH2, CH3 and CH4 - Put the SIGNAL INPUT button on CH4 MONO - Put a 1 kHz 0dB signal in INPUT CH1 - Check that the 4 signal present and 4 cl

21、ip led indicators are on. - Check the movement of the buttons and that each one acts independently on its own respective channel, at the same time check that the clip led indicator goes off when you go down approximately 2dB. Leave them on maximum. - Check the power of 230V at the mains Vo = 13.6v a

22、t 4 W = 46.24 Vo = 16.7 at 8 W = 34.86 - Check that the range goes from 20Hz-20kHz. - Put the button on 4 CH ST. - Put a signal in through INPUT CH1 and CH2, CH3 and CH4 act as a stack-out. - Check that there is a signal in each output and that the power is correct. - Position 4CH QUAD. - Check that

23、 each of the inputs CH1,CH2,CH3 and CH4 are independent and correspond to their respective outputs. Also check that the leds of clip and SP act with their corresponding input. - Position 2CH BRIDGED ST. - Put a charge of 8 in the red terminal of CH1-CH2 and do the same for CH3-CH4 ( see diagram on a

24、mp for the correct connection) - Check that only the buttons of CH1 affect the output formed by CH1-CH2 and the buttonof CH4 affects the output formed by CH3-CH4. The clips should act with their respective group. The CH2 and CH3 buttons have no effect. Vo = 28.3 8 W = 100 - Position 2 CH ST. + 1 CH

25、BRIDGED - Charge the CH1 and CH 2 outputs with 4 and CH3-CH4 in the red terminals with 8. - Check that the buttons of CH1 and CH2 affect their respective outputs and that the group CH3-CH4 acts with the CH4 button. The CH3 button has no effect. - The powers will be the same as in previous cases. STE

26、REO at 4 Vo = 13.6 W = 46.24 MONO at 8 Vo = 28.3 W = 100 - Position 2CH ST.+1CH BRIDGED LOW. - Put signal in INPUT CH1, CH2 of 150 Hz 0dB. - It should act the same as in the previous case. STEREO at 4 Vo = 13.6 CH1,CH2 MONO at 8 Vo = 19.6 CH3-CH4 MPA280 QUALITY CONTROL. We will use a mixer with unba

27、lanced output and a nominal output level of 1V RMS as the signal source for our tests. Connect the mixer outputs to the power amplifier inputs. Plug the power amplifier to mains (check that its specified voltage matches that of mains) and make sure that SP and the power switch LEDs all light up . Tu

28、rn up the amplifier output level until the CLIP LEDs light up. Turn the output level back down and plug the loudspeakers. Check the sound quality (no distorsions or noises). Check ATT action (ATT travel, signal cut at their low end, no scratching or clicking noises and correct stereo channel matchin

29、g for each one). While the power amplifier is working shake it or throw it on a table to make sure the output sound goes on playing correctly. Shortcircuit the power amplifier output and check it goes back to normal operation when you stop shorcircuiting. Repeat the same procedure for the other chan

30、nel. TECHNICAL CHARACTERISTICS Output power (WRMS, 20Hz-20kHz, 1% THD) 1 Channel 4 Ohm 71W 4 Channels 4Ohm 4x55W 4 Channels 8 Ohm 4x40W 2 Channels 8 Ohm 2x112W Frequency response max output power(-1dB) 12Hz - 200kHz Harmonic Dist. + Noise 1kHz 0.06% Intermodulation distortion (SMPTE) 50Hz and 7kHz 4

31、:1 ratio, nominal power 0.008% TIM 100 75dB ref. nominal power/4 92dB Damping factor 1kHz/8 150 Slew Rate 10Vs Channel crosstalk 1kHz 68dB Input connector RCA Sensitivity nom/impedance 0dBV(1V)/25k SIGNAL PRESENT indicators -40dBV Output connector Screw terminal CLIP indicators -1.5dB real clip Main

32、s Depending on your country. See characteristics in the back of the unit. Power consumption max. out. power/4 450VA Dimensions Front panel 482.6x88mm Chassis 440 x88x246mm Weight 7.5kg PARTS LIST:MECHANICAL DIAGRAMREV:MODEL: MPA280DRW.N 30.0085REPLACES:DATE: 17.03.98SHEET 1 OF 1REPLACED BY:QUANTITYV

33、ALUECODE1FRONT PANEL WD.00.2243FCMECMPA301LOWER COVER WD.00.2240FCMECMPA201REAR PANEL WD.00.2254FCMECMPA601COVER WD.00.2241FCMECMPA501LEFT LATERAL WD.00.2242FCMECMPA401RIGHT LATERAL WD.002242FCMECMPA405WHITE CONTROL KNOB D15FCBOT15BL34NUT M5 DIN934FCTUE005001GROUND TERMINAL WD.00.1761FCBOR003001WASH

34、ER M4 SEGFCARS400001TRANSFORMER WASHERFCMECARTR01WASHER M4 ADEFCARDE03001MAINS INPUT AC-13FCBASRE3001TRANSFORMER WHITH ASSEMBLY KITFCTFTMPA002SPACER WLS-20-0FCSEPWLS201POWER SWITCHFCINTRED254SCREW 2.9x13 DIN7981FCT40029131SCREW M4x10 DIN 7985FCT700401022SCREW M4x6 SPANLO DIN 7985FCT75040061ASSEMBLED

35、 PRINTED CIRCUIT 11.0649PARTS LIST:PACKING DIAGRAMREV:MODEL: MPA280DRW.N 32.0030PLREPLACES:DATE: 18.05.98SHEET 1 OF 1REPLACED BY:QUANTITYVALUECODE4METAL WASHER 5x11.5x0.8FCARN500004WASHER AT 5x11.5x3.5 ABSFCARAT30001PACKING BOX MPA280FCCAJP88001FUSE T 6.3AFCFUS501804BASE ADHESIVEFCPIE112552PROTECTING M872/1FCCANT00751BAG FOR MANUAL 120 x180mmFCBOL002001PLASTIC BAG 43x60cmFCBOLS01001PLASTIC BAG 60 x80mmFCBOL001001MANUAL MPA280FCMANMPA001WARRANTY CARDFCTARJG0001MAIN SUPPLY CABLE STANDARDFCCONX0400