AcousticControl-AC300-pwr-sm维修电路原理图.pdf

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1、CONTENTS30 WATT AMPLIFIER(SA-30)SERVICE MANUALELECTRICAL PARTS LISTRef. No.DescriptionMfrsPart No.Resistors(All carbon film 1/4w5%,unless noted otherwise)R388.2KohmRFB282SR394.7KohmRFB247SR401.2KohmRFB212SR4115ohmRFB110SR432.2KohmRFB222SR455.6KohmRFB256SR46820ohmRFB182SR47150ohmRFB150SR484.7KohmRFB2

2、47SR494.7KohmRFB247SR510KohmRFB310SR50100ohmRFB110SR5110ohmRFB010SR5215ohmRFB015SR53100ohmRFB110SR5710ohmRFB010SR6330ohmRFB133SR71KohmRFB210SR78270KohmRFB427SR810KohmRFB310SR8222KohmRFB322SR8512KohmRFB312SR8010KohmRFB310SR7910KohmRFB310SResistors(5W cement resistor)R340.2ohmRF5G2AResistors(1W metal

3、oxide film resistor)R8610ohmRF1010R3547ohmRF1047S P E C I F I C A T I O N S1T R O U B L E S H O O T I N GB L O C KD I A G R A MTRANSFORMERANDTRANSISTORS C H E M AT I CD I A G R A MPRINTEDCIRCUITBOARDSE X P L O D E DV I E W SELECTRICALPARTSLIST12SPEAKEROUTPUTCONNECTION233456711RadioFans.CN 收音机爱 好者资料库

4、ELECTRICAL PARTS LISTRef. No.DescriptionMfrsPart No.Resistors(All carbon film 1/4w5%,unless noted otherwise)R2947KohmRFB347SR2847KohmRFB347SR4439KohmRFB339SR2733KohmRFB333SR6427KohmRFB327SR68270KohmRFB427SR3233KohmRFB333SR5427KohmRFB327SR4222KohmRFB322SR2218KohmRFB318SR3712KohmRFB312SR3112KohmRFB312

5、SR3012KohmRFB312SR3610KohmRFB310SR1510KohmRFB310SR1110KohmRFB310SR6027KohmRFB327SR11KohmRFB210SR12330ohmRFB133SR135.6KohmRFB256SR145.6KohmRFB256SR162.2KohmRFB222SR172.2KohmRFB222SR210KohmRFB310SR20270ohmRFB127SR21680ohmRFB168SR255.6KohmRFB256SR261KohmRFB210SR3315ohmRFB015SSPECIFICATIONSPHONO-57-53-5

6、5MIC2-57-53-55MIC1-57-53-55dBsensitivityInputAUX1-22-18-20at 162222.25at 81415.06VoutputRatedat 410115055dBRatioSignal-to-noise21%distortionharmonicTotal107127117VsourcePowerREMARKLIMITNOMINALUNITITEMNOTE:Nominal specs represent the design specs, All units should be able to approximatethese some wil

7、l exceed and some may drop slightly below these specs. Limit specsrepresenttheabsoluteworstconditionthesestillmightbeconsideredacceptable;Innocaseshouldaunitfailtomeetlimitspecs.TROUBLE SHOOTINGSYMPTOMUnit does not operateOutput is too smallIneffective volume control?loose pl g for power line:replug

8、 into socket.fuse is burnt out:replace it.u?output transformer open:replace OT-30.check Q9Q14:replace the defective components.?defective driver unit:replace driver it.?output transformer open:replace OT-30.VR1. VR2. VR3 is out of oderreplace?VR1. VR2. VR3CAUSE AND REMEDYRadioFans.CN 收音机爱 好者资料库ELECT

9、RICAL PARTS LISTRef. No.DescriptionMfrsPart No.Resistors(All carbon film 1/4w5%,unless noted otherwise)R7275KohmRFB375SR8175KohmRFB375SR6110KohmRFB310SR867.5KohmRFB275SR837.5KohmRFB275SR775.6KohmRFB256SR745.6KohmRFB256SR705.6KohmRFB256SR844.7KohmRFB247SR663.9KohmRFB239SR653.9KohmRFB239SR871KohmRFB21

10、0SR5862KohmRFB362SR6282KohmRFB382SR671KohmRFB210SR76820ohmRFB182SR71820ohmRFB182SR73680ohmRFB168SR63680ohmRFB168SR93.3MohmRFB533SR33.3MohmRFB533SR5947KohmRFB347SR6982KohmRFB382SR10560KohmRFB456SR4560KohmRFB456SR23390KohmRFB439SR24330KohmRFB433SR19100KohmRFB410SR18100KohmRFB410SSPEAKER OUTPUT CONNECT

11、IONtheamplifiermagbeusedinconjunctionwithaspeakerratedat4,8,16ohmsorwith100Vconstant-voltagespeakersystems.BLOCK DIAGRAMMIC1MIC2COM4 OHM8 OHM16 OHM100V-55dB10K ohms50K ohms-55dB10K ohms50K ohmsAUX10KPHONOINPUTINPUTMASTERPOWERAMPPOWERSWITCHAC FUSEAC 117v/60Hz150Hz1KHz6KHzPRIORITYTO POWER AMPPOWER LED

12、VOL PCBPOWER PCBPU PCBTO PRE AMPOT-500?COM4?Total impedance 16?8?16?100V?COM4?Total impedance 16?8?16?100VCOM4?8?16?100V?Total impedance 4?COM4?Total impedance 8?8?16?100VRadioFans.CN 收音机爱 好者资料库TRANSFORMER AND TRANSISTOR LEAD IDENTIFICATIONTRANSISTORSTRANSFORMER (OPT-30)SCHEMATIC DIAGRAMVR1A50KVR2A5

13、0KVR3A50K123123LRLRR5856KR6110KR6027KR135.6KR145.6KR162.2KR172.2KR1510KR20270R19100KR24330KR255.6KR2218KR23390KR20270R21680C18470PC17100PC15(MC).0033UC16(MC).015UC13470C12.001UC201U/50VC1110U/16VC1447U/25VC10.001US1Q3C1815Q4C1815R41100R401.2KR3712KR388.2KD44001C3047U/25VC31100U/50VR341W 2.2KR351W 47

14、R3610KQ7C1815Q8C1815C33100U/50VC3247U/25VD51/2W 9.1VR394.7KAC1AC2+3-4B1C21(MC).0047UC22(MC).0047UC232200U/35VC242200U/35VD14001PTPOW-SWFUSEAC 22OV50HZ/50WC2810U/16VCN4LED POWR2733KR2947K1KR26R2847KC2510U/16VC2622U/16VQ5C1815Q6C1815C2933U/16VR3233KR3315D24148R3112KR3012KC2733U/16VR5947KR6282KQ19C1815

15、Q20C1815Q16C1815Q17C1815Q18C1815Q14D718Q12C2240Q13A1015Q11A1015Q9C2240Q10C2240R8222KR817.5KR837.5KR871KR867.5KR844.7KR671KR8512KR6833PR63680R78270KR7910KR6422KR653.9KR6982KR71820R705.6KR7275KR73680R8010KR7575KR76820R775.6KD124148D131/2W 3VC58100U/16VC5710U/16VC40.47U/50VC4310U/16VC441U/50VC46.47U/50

16、VC55(MC).033UC54.22U/50VC531U/50VC3810U/16VC5610U/16VVR7A50KVR4W50KVR5W50KVR6W50K657U1BMC4558G23184U1AMC4558GC4133PC59(MC).068UC45150PC4233PC4933PC5110PC48(MC).015UC50(MC).0022UC52330PR663.9KC4733PR745.6K1212Q15D718R494.7KR50100R555W 0.2R5110R47150R484.7KR5215R5427KR53100R432KR5710R46820R4439KR455.6

17、KR4222KD61W 18VD74001C34.47U/50VC3722PC35100U/50VC36100U/50VD114148D104148D94148D84148R565W 0.2OPT-30WR861W 1012COM4 OHM8 OHM16 OHM100VCN9C39100PM1M2GNDAUXGNDOUTM1M2GNDAUXGNDOUTOTCN6CN8PRIORITYCN5 PT INOUT+23V-VCC+VCCAUXPHONO123456CN7123456CN2!2SC1815GRC2240C1015ECBBKBRROYO4816100RNOT-3060BKWSPECIFI

18、CATIONPri:0-6: 0.210%Sec: 0-4: 0.45%0-8: 0.55%0-16: 0.55%0-100: 10.15%ECBELECTRICAL PARTS LISTRef. No.DescriptionMfrsPart No.ElectrolyticCapacitorsC3047uF 25VCE647EC31100uF 50VCE710GC3247uF 25VCE647EC33100uF 50VCE710GC340.47uF 50VCE447GC35100uF 50VCE710GC36100uF 50VCE710GC3810uF 16VCE610DC40.47uF 50

19、VCE447GC400.47uF 50VCE447GC43100uF 16VCE710NC4410uF 16VCE510GC460.47uF 50VCE447GC5100uF 50VCE710GC5310uF 16VCE510GC540.22uF 50VCE422GC56100uF 16VCE710NC57100uF 16VCE710NC71uF 50VCE510GC90.47uF 50VCE447GMylar CapacitorsC160.015 50VCL315GC210.0047 50VCL247GC220.0047 50VCL247GC480.015 50VCL315GC500.002

20、2 50VCL222GC550.033 50VCL333GC590.068 50VCL368GR7575KohmRFB375SRadioFans.CN 收音机爱 好者资料库PRINTED CIRCUIT BOARDS (bottom views)OUTPUT PCBPOWER PCBPRE-PCB30 WATT-VOL30 WATT-PU30 WATT-POWELECTRICAL PARTS LISTRef. No.DescriptionMfrsPart No.Ceramic CapacitorsC10.001uF Z5ECC210GC100.001uF Z5ECC210GC120.001uF

21、 Z5ECC210GC13470PF Y5ECC147DC17100PF SLCC110CC18470PF Y5ECC147DC322PF NPOCC022BC37100PF SLCC110CC39100PF SLCC110CC4133PF NPOCC033BC4233PF NPOCC033BC45150PF SLCC115CC4733PF NPOCC033BC4933PF NPOCC033BC5110PF NPOCC010BC52330PFY5ECC133DC60.001uF Z5ECC210GC822PF NPOCC022BElectrolyticCapacitorsC1110uF 16V

22、CE610DC1447uF 25VCE647EC21uF 50VCE510GC201uF 50VCE510GC232200uF 35V16*31.5mmCE822FC242200uF 35V16*31.5mmCE822FC2510uF 16VCE610DC2622uF 16VCE622DC2733uF 16VCE633DC2810uF 16VCE610DC2933uF 16VCE633DRadioFans.CN 收音机爱 好者资料库PRINTED CIRCUIT BOARDS (top views)OUTPUT PCBPOWER PCBPRE-PCBEXPLODED VIEWS1.34.5 k

23、nob2.15 knob3. swi ch4. face board5. wood washer6. LED37. front board8.9. PCB10. bottom board11. hole covering board12. rubber foot spacer13. color screw bill 4 1014.six angle screw cap4plated black screw flat 3 7t15. color scew fat 4 1216. PT17. OT18. PCB19. 10mm Cu pole20.21. L type fixed frame22.

24、 head sink23. top cover24.25. back board26. fuse27.plated black screw flat 3 10plated black screw flat 4 6plated black screw flat 3 1228. insulating plate29. terminal30. wire tie31.32. 7P7P terminal stage protective coverterminal stage33. PCB34. Ni screw flat 4 1235. plated black screw 3 836. six angle screw cap37. PCBRadioFans.CN 收音机爱 好者资料库