AcousticControl-AC300-pwr-sm 电路图 维修手册.pdf

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1、CONTENTS 30 WATT AMPLIFIER (SA-30) SERVICE MANUAL ELECTRICAL PARTS LIST Ref. No.DescriptionMfrsPart No. Resistors (All carbon film 1/4w5%,unless noted otherwise) R388.2KohmRFB282S R394.7KohmRFB247S R401.2KohmRFB212S R4115ohmRFB110S R432.2KohmRFB222S R455.6KohmRFB256S R46820ohmRFB182S R47150ohmRFB150

2、S R484.7KohmRFB247S R494.7KohmRFB247S R510KohmRFB310S R50100ohmRFB110S R5110ohmRFB010S R5215ohmRFB015S R53100ohmRFB110S R5710ohmRFB010S R6330ohmRFB133S R71KohmRFB210S R78270KohmRFB427S R810KohmRFB310S R8222KohmRFB322S R8512KohmRFB312S R8010KohmRFB310S R7910KohmRFB310S Resistors (5W cement resistor)

3、R340.2ohmRF5G2A Resistors (1W metal oxide film resistor) R8610ohmRF1010 R3547ohmRF1047 S P E C I F I C A T I O N S1 T R O U B L E S H O O T I N G B L O C KD I A G R A M TRANSFORMERANDTRANSISTOR S C H E M AT I CD I A G R A M PRINTEDCIRCUITBOARDS E X P L O D E DV I E W S ELECTRICALPARTSLIST 1 2 SPEAKE

4、ROUTPUTCONNECTION2 3 3 45 6 711 RadioFans.CN 收音机爱 好者资料库 ELECTRICAL PARTS LIST Ref. No.DescriptionMfrsPart No. Resistors (All carbon film 1/4w5%,unless noted otherwise) R2947KohmRFB347S R2847KohmRFB347S R4439KohmRFB339S R2733KohmRFB333S R6427KohmRFB327S R68270KohmRFB427S R3233KohmRFB333S R5427KohmRFB

5、327S R4222KohmRFB322S R2218KohmRFB318S R3712KohmRFB312S R3112KohmRFB312S R3012KohmRFB312S R3610KohmRFB310S R1510KohmRFB310S R1110KohmRFB310S R6027KohmRFB327S R11KohmRFB210S R12330ohmRFB133S R135.6KohmRFB256S R145.6KohmRFB256S R162.2KohmRFB222S R172.2KohmRFB222S R210KohmRFB310S R20270ohmRFB127S R2168

6、0ohmRFB168S R255.6KohmRFB256S R261KohmRFB210S R3315ohmRFB015S SPECIFICATIONS PHONO-57-53-55 MIC2-57-53-55 MIC1-57-53-55dBsensitivityInput AUX1-22-18-20 at 162222.25 at 81415.06VoutputRated at 41011 5055dBRatioSignal-to-noise 21%distortionharmonicTotal 107127117VsourcePower REMARKLIMITNOMINALUNITITEM

7、 NOTE: Nominal specs represent the design specs, All units should be able to approximate these some will exceed and some may drop slightly below these specs. Limit specs representtheabsoluteworstconditionthesestillmightbeconsideredacceptable;In nocaseshouldaunitfailtomeetlimitspecs. TROUBLE SHOOTING

8、 SYMPTOM Unit does not operate Output is too small Ineffective volume control ?loose pl g for power line: replug 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. ?outpu

9、t transformer open: replace OT-30. VR1. VR2. VR3 is out of oder replace ? VR1. VR2. VR3 CAUSE AND REMEDY RadioFans.CN 收音机爱 好者资料库 ELECTRICAL PARTS LIST Ref. No.DescriptionMfrsPart No. Resistors (All carbon film 1/4w5%,unless noted otherwise) R7275KohmRFB375S R8175KohmRFB375S R6110KohmRFB310S R867.5Ko

10、hmRFB275S R837.5KohmRFB275S R775.6KohmRFB256S R745.6KohmRFB256S R705.6KohmRFB256S R844.7KohmRFB247S R663.9KohmRFB239S R653.9KohmRFB239S R871KohmRFB210S R5862KohmRFB362S R6282KohmRFB382S R671KohmRFB210S R76820ohmRFB182S R71820ohmRFB182S R73680ohmRFB168S R63680ohmRFB168S R93.3MohmRFB533S R33.3MohmRFB5

11、33S R5947KohmRFB347S R6982KohmRFB382S R10560KohmRFB456S R4560KohmRFB456S R23390KohmRFB439S R24330KohmRFB433S R19100KohmRFB410S R18100KohmRFB410S SPEAKER OUTPUT CONNECTION theamplifiermagbeusedinconjunctionwithaspeakerratedat4, 8,16ohmsorwith100Vconstant-voltagespeakersystems. BLOCK DIAGRAM MIC1 MIC2

12、 COM 4 OHM 8 OHM 16 OHM 100V -55dB 10K ohms 50K ohms -55dB 10K ohms 50K ohms AUX 10K PHONO INPUT INPUT MASTER POWER AMP POWER SWITCH AC FUSE AC 117v/60Hz 150Hz 1KHz 6KHz PRIORITY TO POWER AMP POWER LED VOL PCB POWER PCB PU PCB TO PRE AMP OT-500 ? COM4? Total impedance 16? 8?16?100V ? COM4? Total imp

13、edance 16? 8?16?100V COM4?8?16?100V ? Total impedance 4? ? COM4? Total impedance 8? 8?16?100V TRANSFORMER AND TRANSISTOR LEAD IDENTIFICATION TRANSISTORS TRANSFORMER (OPT-30) SCHEMATIC DIAGRAM VR1 A50K VR2 A50K VR3 A50K 1 2 3 1 2 3 L R L R R58 56K R61 10K R60 27K R135.6K R145.6K R16 2.2K R17 2.2K R15

14、 10K R20 270 R19 100K R24 330K R25 5.6K R22 18K R23 390K R20 270 R21 680 C18 470P C17 100P C15 (MC).0033U C16 (MC).015U C13470 C12 .001U C20 1U/50V C11 10U/16V C14 47U/25V C10 .001U S1 Q3 C1815 Q4 C1815 R41 100 R40 1.2K R37 12K R38 8.2K D44001 C30 47U/25V C31 100U/50V R34 1W 2.2K R35 1W 47 R36 10K Q

15、7C1815 Q8 C1815 C33 100U/50V C32 47U/25V D5 1/2W 9.1V R39 4.7K AC 1 AC 2 + 3 - 4 B1 C21 (MC).0047U C22 (MC).0047U C23 2200U/35V C24 2200U/35V D1 4001 PT POW-SW FUSE AC 22OV 50HZ/50W C28 10U/16V CN4 LED POW R27 33K R29 47K 1K R26 R28 47K C25 10U/16V C26 22U/16V Q5 C1815 Q6 C1815 C29 33U/16V R32 33K R

16、33 15 D2 4148 R31 12K R30 12K C27 33U/16V R59 47K R62 82K Q19 C1815 Q20 C1815 Q16 C1815 Q17 C1815 Q18 C1815 Q14 D718 Q12 C2240 Q13 A1015 Q11 A1015 Q9 C2240 Q10 C2240 R82 22K R81 7.5K R83 7.5K R87 1K R86 7.5K R84 4.7K R67 1K R85 12K R68 33P R63 680 R78 270K R79 10K R64 22K R65 3.9K R69 82K R71 820 R7

17、0 5.6K R72 75K R73 680 R80 10K R75 75K R76 820 R77 5.6K D12 4148 D13 1/2W 3V C58 100U/16V C57 10U/16V C40 .47U/50V C43 10U/16V C44 1U/50V C46 .47U/50V C55 (MC).033U C54 .22U/50V C53 1U/50V C38 10U/16V C56 10U/16V VR7 A50K VR4 W50K VR5 W50K VR6 W50K 6 5 7 U1B MC4558G 2 3 1 8 4 U1A MC4558G C41 33P C59

18、 (MC).068U C45 150P C4233P C49 33P C51 10P C48 (MC).015U C50 (MC).0022U C52 330P R66 3.9K C47 33P R74 5.6K 1 2 1 2 Q15 D718 R49 4.7K R50 100 R55 5W 0.2 R51 10 R47 150 R48 4.7K R52 15 R54 27K R53 100 R43 2K R57 10 R46 820 R44 39K R45 5.6K R42 22K D6 1W 18V D7 4001 C34 .47U/50V C37 22P C35 100U/50V C3

19、6 100U/50V D11 4148 D10 4148 D9 4148 D8 4148 R56 5W 0.2 OPT-30W R86 1W 10 1 2 COM 4 OHM 8 OHM 16 OHM 100V CN9 C39 100P M1 M2 GND AUX GND OUT M1 M2 GND AUX GND OUT OT CN6 CN8 PRIORITY CN5 PT IN OUT +23V -VCC +VCC AUX PHONO 1 2 3 4 5 6 CN7 1 2 3 4 5 6 CN2 ! ! ! ! ! 2SC1815GR C2240 C1015 E CB BKBRROY O

20、4816100 RNOT-30 60 BKW SPECIFICATION Pri:0-6: 0.210% Sec: 0-4: 0.45% 0-8: 0.55% 0-16: 0.55% 0-100: 10.15% ECB ELECTRICAL PARTS LIST Ref. No.DescriptionMfrsPart No. Electrolytic Capacitors C3047uF 25VCE647E C31100uF 50VCE710G C3247uF 25VCE647E C33100uF 50VCE710G C340.47uF 50VCE447G C35100uF 50VCE710G

21、 C36100uF 50VCE710G C3810uF 16VCE610D C40.47uF 50VCE447G C400.47uF 50VCE447G C43100uF 16VCE710N C4410uF 16VCE510G C460.47uF 50VCE447G C5100uF 50VCE710G C5310uF 16VCE510G C540.22uF 50VCE422G C56100uF 16VCE710N C57100uF 16VCE710N C71uF 50VCE510G C90.47uF 50VCE447G Mylar Capacitors C160.015 50VCL315G C

22、210.0047 50VCL247G C220.0047 50VCL247G C480.015 50VCL315G C500.0022 50VCL222G C550.033 50VCL333G C590.068 50VCL368G R7575KohmRFB375S PRINTED CIRCUIT BOARDS (bottom views) OUTPUT PCB POWER PCB PRE-PCB 30 WATT-VOL 30 WATT-PU 30 WATT-POW ELECTRICAL PARTS LIST Ref. No.DescriptionMfrsPart No. Ceramic Cap

23、acitors C10.001uF Z5ECC210G C100.001uF Z5ECC210G C120.001uF Z5ECC210G C13470PF Y5ECC147D C17100PF SLCC110C C18470PF Y5ECC147D C322PF NPOCC022B C37100PF SLCC110C C39100PF SLCC110C C4133PF NPOCC033B C4233PF NPOCC033B C45150PF SLCC115C C4733PF NPOCC033B C4933PF NPOCC033B C5110PF NPOCC010B C52330PFY5ECC

24、133D C60.001uF Z5ECC210G C822PF NPOCC022B Electrolytic Capacitors C1110uF 16VCE610D C1447uF 25VCE647E C21uF 50VCE510G C201uF 50VCE510G C232200uF 35V16*31.5mmCE822F C242200uF 35V16*31.5mmCE822F C2510uF 16VCE610D C2622uF 16VCE622D C2733uF 16VCE633D C2810uF 16VCE610D C2933uF 16VCE633D PRINTED CIRCUIT B

25、OARDS (top views) OUTPUT PCB POWER PCB PRE-PCB EXPLODED VIEWS 1.34.5 knob 2.15 knob 3. swi ch 4. face board 5. wood washer 6. LED3 7. front board 8. 9. PCB 10. bottom board 11. hole covering board 12. rubber foot spacer 13. color screw bill 4 10 14. six angle screw cap4 plated black screw flat 3 7 t

26、 15. color scew fat 4 12 16. PT 17. OT 18. PCB 19. 10mm Cu pole 20. 21. L type fixed frame 22. head sink 23. top cover 24. 25. back board 26. fuse 27. plated black screw flat 3 10 plated black screw flat 4 6 plated black screw flat 3 12 28. insulating plate 29. terminal 30. wire tie 31. 32. 7P 7P terminal stage protective cover terminal stage 33. PCB 34. Ni screw flat 4 12 35. plated black screw 3 8 36. six angle screw cap 37. PCB