Fostex-MN12-mix-sm维修电路原理图.pdf

《Fostex-MN12-mix-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《Fostex-MN12-mix-sm维修电路原理图.pdf（20页珍藏版）》请在收音机爱好者资料库上搜索。

1、MN-12/041MN-12MN-04Service ManualModelMini MixerRadioFans.CN 收音机爱 好者资料库2MN-12/04SAFETY INSTRUCTIONSRead instructions - All the safety and operating instruc-tions should be read before the appliance is operated.Retain instructions - The safety and operating instructionsshould be retained for future r

2、eference.Heed warnings - All warnings on the appliance and in theoperating instructions should be adhered to.Follow instructions - All operating and use instructionsshould be followed.Water and Moisture - The appliance should not be usednear water - for example, near a bathtub, washbowl,kitchen sink

3、, laundry tub, in a wet basement, or near aswimming pool, and the like.Carts and Stands - The appliance should be used onlywith a cart or stand that is recommended by the manufac-turer.An appliance and cart combination should be moved withcare. Quick stops, excessive force, and uneven surfacesmay ca

4、use the appliance and cart combination to over-turn.Wall or Ceiling Mounting - The appliance should bemounted to a wall or ceiling only as recommended by themanufacturer.Ventilation - The appliance should be situated so that itslocation or position does not interfere with its proper ven-tilation. Fo

5、r example, the appliance should not be situ-ated on a bed, sofa, rug, or similar surface that may blockthe ventilation openings; or, placed in a built-in installa-tion, such as a bookcase or cabinet that may impede theflow of air through the ventilation openings.Heat - The appliance should be situat

6、ed away from heatsources such as radiators, heat registers, stoves, or otherappliances (including amplifiers) that produce heat.Power Sources - The appliance should be connected to apower supply only of the type described in the operatinginstructions or as marked on the appliance.Grounding or Polari

7、zation - The precautions that shouldbe taken so that the grounding or polarization means ofan appliance is not defeated.Power Cord Protection - Power supply cords should berouted so that they are not likely to be walked on orpinched by items placed upon or against them, payingparticular attention to

8、 cords at plugs, convenience recep-tacles, and the point where they exit from the appliance.Cleaning - The appliance should be cleaned only as rec-ommended by the manufacturer.Nonuse Periods - The power cord of the appliance shouldbe unplugged from the outlet when left unused for a longperiod of tim

9、e.Object and Liquid Entry - Care should be taken so thatobjects do not fall and liquids are not spilled into the en-closure through openings.Damage requiring Service - The appliance should be ser-viced by qualified service personnel when:A.B.C.D.E.Servicing - The user should not attempt to service t

10、he ap-pliance beyond that described in the operating instruc-tions. All other servicing should be referred to qualifiedservice personnel.REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.CAUTIONRISK OF ELECTRIC SHOCKDO NOT OPENCAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,DO NOT REMOVE COVER (OR BACK).

11、NO USER-SERVICEABLE PARTS INSIDE.TO PREVENT ELECTRIC SHOCK, MATCHWIDE BLADE OF PLUG TO WIDE SLOT,FULLY INSERT.POUR VITER LES CHOCS LECTRIQUES,INTRODUIRE LA LAME LA PLUS LARGE DELA FICHE DANS LA BORNE CORRE-SPONDANTE DE LA PRISE ET POUSSERJUSQU AU FOND.CAUTION:ATTENTION:The exclamation point within a

12、n equilateraltriangle is intended to alert the user to thepresence of important operating and mainte-nance (servicing) instructions in the literatureaccompanying the appliance.The lightening flash with arrowhead symbol,within an equilateral triangle, is intended toalert the user to the presence of u

13、ninsulated“dangerous voltage” within the products en-closure that may be of sufficient magnitude toconstitute a risk of electric shock to persons.“WARNING”“TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOIS-TURE.”1.2.3.4.5.6.7.8.The power supply cord or the plu

14、g has been damaged;orObjects have fallen, or liquid has been spilled into theappliance; orThe appliance has been exposed to rain; orThe appliance does not appear to operate normally orexhibits a marked changed in performance; orThe appliance has been dropped, or the enclosuredamaged.9.10.11.12.13.14

15、.15.16.17.RadioFans.CN 收音机爱 好者资料库MN-12/043TABLE OF CONTENTS1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2. CONTROLS, INDICATORS AND CONNECTORS . . . . . . . . . . . .3. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST . . . . . .4. CIRCUIT & BLOCK DIAGRAMS

16、 . . . . . . . . . . . . . . . . . . . . . . . .NOTES*Parts List and circuit diagrams are given in this manual to assist the service technician in maintaining the Model MN-12/04.*The following accessories are supplied with MN-12/04 as the standard accessories.MN-12Owners manual: 8288399000 (for expo

17、rt model): 8288400000 (for JPN)AC adaptor AD-12A: 8270727003 (for USA/CND): 8270727006 (for EUR): 8270727007 (for UK): 8270727010 (for JPN)MN-04Owners manual: 8288397000 (for export model): 8288398000 (for JPN)AC adaptor AD-9A: 8270728003 (for USA/CND): 8270728006 (for EUR): 8270728007 (for UK): 827

18、0728010 (for JPN)*Following is the packing material for the Model MN-12/04.MN-12PACKING, TOP, MN12: 8228402000PACKING, BOTTOM, MN12: 8228403000INNER, CARTON, MN12: 8228725000MN-04PACKING, TOP, MN-04: 8288724000PACKING, BOTTOM, MN-04: 8228404000CARTON, BOX, MN-04: 828872400046815CAUTIONParts marked w

19、ith this sign are safety critical components. They must always be replaced with identical components.Refer to the Fostex Parts List and ensure exact replacement.4MN-12/041. SPECIFICATIONSMN-12DEFINITION ( Specification Unit : 0 dBV = 1 Vrms)Normal Fader PositionMaster faderAt 78 positionConditionAUX

20、 RTN : -20 dBV / 1 kHz, AUX RTN VR : MaxAdjust Master fader for -10 dBV at STEREO OUT.Input faderAt 78 positionConditionINPUT: -10 dBV / 1 kHz, PAN : L(R), TRIM : LINE, EQ GAIN : 0Adjust Input fader for -10 dBV at STEREO OUT.INPUT SECTIONINPUT 14Input level-60dBV (MIC) -10dBV (LINE)Impedance20 k or

21、moreEQ HI 13dB 3dB ( -10dBV / 10 kHz )EQ LOW 13dB 3dB ( -10dBV / 100 Hz )INPUT 5-6, 7-8, 9-10, 11-12Input level-10dBVImpedance8 k or moreAUX RTNInput level-10dBVImpedance8 k or moreOUTPUT SECTIONSTEREO OUTLevel-10dBVLoad Impedance1kFrequency Response20 20kHz 1.5dB ( INPUT 14 : -60dBV)20 20kHz 1dB (

22、INPUT 18 : -10dBV)S/N80 dB or more ( DIN AUDIO,INPUT 14 : -10dBV)81 dB or more ( IHF-A, INPUT 14 : -10dBV)63 dB or more ( DIN AUDIO, INPUT 18 : -60dBV)64 dB or more ( IHF-A, INPUT 18 : -60dBV)Distortion0.01 % or less ( INPUT 18 : 1kHz / 0dBV , OUTPUT : 0dBV )0.05 % or less ( INPUT 14 : 1kHz/-50dBV ,

23、 OUTPUT : 0dBV )Crosstalk60dB or more at 1kHzClick Noise (Power on / off)-20 dBVp-p or less (OUTPUT VR : MIN)Peak LED Indication0 dBV 3dBAUX SENDLevel-10dBVLoad Impedance1kFrequency Response20 20kHz +1dB ( INPUT : -10dBV)S/N86 dB or more ( DIN AUDIO,INPUT : -10dBV)88 dB or more ( IHF-A, INPUT : -10d

24、BV)Distortion0.01 % or less ( INPUT : 1kHz / 0dBV , OUTPUT : 0dBV )Crosstalk60dB or more at 1kHzClick Noise (Power on / off)-20 dBVp-p or less (OUTPUT VR : MIN)PHONESConnectorStereo phoneLevel40mW or more (Normal fader position)Load Impedance32Frequency Response20 20 kHz 1.5dB ( 32 load, INPUT : -10

25、dBV, OUTPUT : 40mW )20 20 kHz 3dB ( 32 load, INPUT : -10dBV, OUTPUT : 40mW )Distortion0.2 % or less ( 32 load, 1kHz, OUTPUT : 40mW )GENERALDimensions356 (W) 198 (D) 45 (H) mmWeight1.3 kgPower supplyUSA/CND120VAC, 60HzEUR/UK230VAC, 50/60HzJPN100VAC, 50/60HzMN-12/045MN-04DEFINITION ( Specification Uni

26、t : 0 dBV = 1 Vrms )Normal Fader PositionMaster faderAt 78 positionConditionINPUT 4 : -10 dBV / 1 kHz, PAN 4 : L(R)First, set MASTER fader at max.and adjust INPUT 4 fader for -4dBV at STEREO OUT L(R).Then, adjust MASTER fader for -10dBV at STEREO OUT L (R).Input faderAt 78 positionConditionINPUT: -1

27、0 dBV / 1 kHz, PAN : L(R), TRIM : LINEAdjust Input fader for -10 dBV at STEREO OUT.INPUT SECTIONINPUT 1Input level-60dBV(MIC) / -50-20dBV(ALC ON) / -10dBV(LINE)Impedance20 k or moreINPUT 24Input level-10dBVImpedance8 k or moreOUTPUT SECTIONSTEREO OUTLevel-10dBVLoad Impedance1kFrequency Response20 20

28、kHz 1.5dB (INPUT : -60dBV)20 20kHz +1dB (INPUT : -10dBV)S/N82 dB or more (DIN AUDIO,INPUT : -10dBV)84 dB or more ( IHF-A, ,INPUT : -10dBV)56 dB or more (DIN AUDIO,INPUT : -60dBV)58 dB or more ( IHF-A, ,INPUT : -60dBV)Distortion0.25 % or less ( INPUT : 1kHz/-50dBV/MIC , OUTPUT : 0dBV )3.0 % or less (

29、 INPUT : 1kHz/-40dBV/ALC , OUTPUT : 0dBV )0.05 % or less ( INPUT : 1kHz/-10dBV/LINE , OUTPUT : 0dBV )Crosstalk55dB or more at 1kHzClick Noise (Power on / off)-20 dBVp-p or less (OUTPUT VR : MIN)Peak LED Indication0 dBV 3dBPHONESLevel1mW or more (Normal fader position)Load Impedance32Frequency Respon

30、se80 20 kHz +1-3dB ( 32 load, INPUT : -60dBV )80 20 kHz +1-3dB ( 32 load, INPUT : -10dBV )Distortion0.2 % or less ( 32 load, 1kHz, 200 mW )GENERALDimensions193 (W) 130 (D) 45 (H) mmWeight0.5 kgPower supplyUSA/CND120VAC, 60HzEUR/UK230VAC, 50/60HzJPN100VAC, 50/60Hz*Specifications and appearance are su

31、bject to change without notice for product improvement.6MN-12/042. CONTROLS, INDICATORS & CONNECTORSPHONES1050AUXRLPAN/BAL1050AUXRLPAN/BAL1050AUXRLPAN/BAL0+-EQ HI+0-EQ LO10RMIC50LLINEAUXPANTRIM0+-EQ HI+0-EQ LO10RMIC50LLINEAUXPANTRIM0+-EQ HI+0-EQ LO10RMIC50LLINEAUXPANTRIM0+-EQ HI+0-EQ LO10RMIC50LLINE

32、AUXPANTRIMPOWERPEAK1234PEAKPEAKPEAK1050AUXRLPAN/BAL05100510000055551010101005100510051010101055500010505/MONO6MASTER10501050AUX RTN7/MONO89/MONO1011/MONO12MN12LR+-105036DC IN12V-+STAND BYONL/MONOAUX RTNRAUX SENDLRSTEREO OUT31246578910121314151. DC IN jack DC IN2. Power switch STANDBY3. Aux return ja

33、cks AUX RTN4. Aux send jack AUX SEND5. Stereo out jacks STEREO OUT6. High equalizer knobs 14 EQ HI7. Low equalizer knobs 14 EQ LO8. Aux level knob 18 AUX9. Panpot Knobs 14 PAN10. Input trim knobs 14 TRIM11. Power LED POWER12. Panpot / Balance knobs 58 PAN/BAL13. LED level meter14. Aux return knob AU

34、X RTN15. Phones knob PHONES16. Input fader 112 11217. Master fader MASTER18. Input jacks 11219. Headphone jack1617111819MN-12/047STEREO OUTRLONSTANDBYDC IN9V-+PEAK05100510051005100510MN04MASTER4321PANPANPANPANLINEMICALC ONMICRLRLRLRL1234567891011121. Battery compartment2. DC IN jack DC IN3. Power sw

35、itch STANDBY4. Stereo out jacks STEREO OUT5. Level selector switch6. Power LED7. Panpot knob 14 PAN8. Peak LED PEAK9. Input fader 14 1410. Master fader MASTER11. Input jacks 1412. Headphone jack8MN-12/043. EXPLODED VIEW, PCB ASSEMBLY AND PARTS LIST MN-12 OVERALL EXPLODED VIEW & PARTS LISTNo. PartsNo

36、.Description18212600000PANEL, FRONT, MN-1228216598000SHIELD, PLATE, MN1238274180000PCB Assy, METER, MN-1248270727003ADAPTOR, AD-12A, USA/CND8270727006ADAPTOR, AD-12A, EUR8270727007ADAPTOR, AD-12A, UK8270727010ADAPTOR, AD-12A, JPN58274179000PCB Assy, MAIN, MN-1268226198004ROTARY, KNOB, (D), GRY782261

37、98003ROTARY, KNOB(C), GRN88226198002ROTARY, KNOB(B), YEL98226198001ROTARY, KNOB(A), RED10 8226159001KNOB, FADER, WHT11 8226159002KNOB, FADER, RED12 8221269000PLATE, BOTTOM, MN1213 8207010700RUBBER, FOOTMN-12/049 MN-04 OVERALL EXPLODED VIEW & PARTS LISTNo. PartsNo.Description18221262000KNOB, SW, WHT2

38、8212599000PANEL, FRONT, MN-0438274182000PCB Assy, SELECTOR, MN-0448216599000SHIELD, PLATE, MN-0458270728003ADAPTOR, AD-9A, USA/CND8270728006ADAPTOR, AD-9A, EUR8270728007ADAPTOR, AD-9A, UK8270728010ADAPTOR, AD-9A, JPN68226198002ROTARY, KNOB(B), Y78226159001KNOB, FADER, WHT88274181000PCB Assy, MAIN, M

39、N-0498226159002KNOB, FADER, RED10 8216513000SPONG, MN0611 8212115001BATTERY, COVER, MN0612 8221268000PLATE, BOTTOM, MN-0413 8207010700RUBBER, FOOT10MN-12/04Ref. No.Part No.DescriptionR114414 8230138203HT, CARBON, 1/4W, 20K, 5%R115415 8230138103HT, CARBON, 1/4W, 10K, 5%R116416 8230138242HT, CARBON, 1

40、/4W, 2.4K, 5%R117417 8230138223HT, CARBON, 1/4W, 22K, 5%R118418 8230138223HT, CARBON, 1/4W, 22K, 5%R119419 8230138474HT, CARBON, 1/4W, 470K, 5%R120420 8230138102HT, CARBON, 1/4W, 1K, 5%R121421 8230138101HT, CARBON, 1/4W, 100, 5%R122422 8230138104HT, CARBON, 1/4W, 100K, 5%R123423 8230138273HT, CARBON

41、, 1/4W, 27K, 5%R124424 8230138563HT, CARBON, 1/4W, 56K, 5%R151, 2518230138683HT, CARBON, 1/4W, 68K, 5%R152, 2528230138273HT, CARBON, 1/4W, 27K, 5%R153, 2538230138563HT, CARBON, 1/4W, 56K, 5%R154, 2548230138102HT, CARBON, 1/4W, 1K, 5%R155, 2558230138303HT, CARBON, 1/4W, 30K, 5%R156, 2568230138332HT,

42、CARBON, 1/4W, 3.3K, 5%R3518230138203HT, CARBON, 1/4W, 20K, 5%R3528230138203HT, CARBON, 1/4W, 20K, 5%R3538230138203HT, CARBON, 1/4W, 20K, 5%R3548230138223HT, CARBON, 1/4W, 22K, 5%R3558230138102HT, CARBON, 1/4W, 1K, 5%R3568230138332HT, CARBON, 1/4W, 3.3K, 5%R451, 4528230138332HT, CARBON, 1/4W, 3.3K, 5

43、%R453, 4548230138273HT, CARBON, 1/4W, 27K, 5%R455, 4568230138332HT, CARBON, 1/4W, 3.3K, 5%R457, 4588230138103HT, CARBON, 1/4W, 10K, 5%R459, 4608230138220HT, CARBON, 1/4W, 22, 5%R5018018230138103HT, CARBON, 1/4W, 10K, 5%R5028028230138203HT, CARBON, 1/4W, 20K, 5%R5038038230138103HT, CARBON, 1/4W, 10K,

44、 5%R5048048230138203HT, CARBON, 1/4W, 20K, 5%R5058058230138473HT, CARBON, 1/4W, 47K, 5%R5068068230138473HT, CARBON, 1/4W, 47K, 5%R5078078230138473HT, CARBON, 1/4W, 47K, 5%R5088088230138473HT, CARBON, 1/4W, 47K, 5%R5098098230138203HT, CARBON, 1/4W, 20K, 5%R551, 5528230138153HT, CARBON, 1/4W, 15K, 5%R

45、5538230138470HT, CARBON, 1/4W, 47, 5%R6518230138332HT, CARBON, 1/4W, 3.3K, 5%R652, 6538230138103HT, CARBON, 1/4W, 10K, 5%R654, 6558230138470HT, CARBON, 1/4W, 47, 5%R6568230138474HT, CARBON, 1/4W, 470K, 5%R6578230138473HT, CARBON, 1/4W, 47K, 5%R6588230138473HT, CARBON, 1/4W, 47K, 5%R901, 902823013820

46、3HT, CARBON, 1/4W, 20K, 5%ICsRef.No.PartNo.DescriptionU101701 8236037200IC, ANALOG, PC4570HU102, 302 8236037200IC, ANALOG, PC4570HU151351 8236037200IC, ANALOG, PC4570HU4518236041300IC, ANALOG, NJM4556LU5518236038900IC, DIP, LEDDRIVER, IR2E27AU6028236032005IC, REGULATOR, NJM78M12FATRANSISTORsRef.No.P

47、artNo.DescriptionQ101401 8236408900TR, 2SD1858, QR, TQ102402 8234108800TR, 2SB1237, PQR, TQ151, 251 8236408900TR, 2SD1858, QR, TQ3518236408900TR, 2SD1858, QR, TQ6518234108800TR, 2SB1237, PQR, TDIODEsRef.No.PartNo.DescriptionD101401 8234104000OPT, V, LED, RED, RJ3-2034ADSD551, 561 8234109301OPT, LED,

48、 SEL1124RD552, 562 8234109301OPT, LED, SEL1124RD553, 563 8234109302OPT, LED, SEL1324GD554, 564 8234109302OPT, LED, SEL1324GD555, 565 8234109302OPT, LED, SEL1324GD6528234017601DIODE, 1SS133D6538234103900OPT, V, LED, GRN, RT3-5034YGSD6548234017601DIODE, 1SS133D6558234000700DIODE, 1N4002RESISTORsRef. N

49、o.Part No.DescriptionR101401 8230138101HT, CARBON, 1/4W, 100, 5%R102402 8230138104HT, CARBON, 1/4W, 100K, 5%R103403 8230138224HT, CARBON, 1/4W, 220K, 5%R104404 8230138470HT, CARBON, 1/4W, 47, 5%R105405 8230138512HT, CARBON, 1/4W, 5.1K, 5%R106406 8230138512HT, CARBON, 1/4W, 5.1K, 5%R107407 8230138153

50、HT, CARBON, 1/4W, 15K, 5%R108408 8230138153HT, CARBON, 1/4W, 15K, 5%R109409 8230138103HT, CARBON, 1/4W, 10K, 5%R110410 8230138243HT, CARBON, 1/4W, 24K, 5%R111411 8230138303HT, CARBON, 1/4W, 30K, 5%R112412 8230138243HT, CARBON, 1/4W, 24K, 5%R113413 8230138303HT, CARBON, 1/4W, 30K, 5% MN-12 PartsList