Rega-Cursa-pre-sch 维修电路原理图.pdf

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1、12345678ABCD87654321DCBATitleNumberRevisionSizeA2Date:10-Sep-2002Sheet of File:F:ElexCursa.ddbDrawn By:R611KR621KR76100RR71100RC6047pFD81N41488NC9NO73NC2NO4+1-10RLA3EA2-5R45100RR36100RR41470KR52470KR601KR1122KR46100RR10680RR33100KR69680RR56470KR734K7R55100KR31470KC296.8uFC346.8uFC40100pFC50100pFC281

2、00nFC33 100nFC551uFC471uF-15VC641000pFC231000pF32184U6ATL072ACP567U6BTL072ACP+15V-15VD181N4148D171N4148D151N4148D161N4148C1610uF/50VC1710uF/50VVin1GND2+15V3U2LM7815CTVin2GND1-15V3U1UA7915UC32184U7ATL072567U7BTL072R53470KR39470KR51560RR50560RC52 100nFC44100nF+15V-15VC59470nFC48470nF+15V-15VCDRCDLTUNL

3、TUNRAU1LAU1RAU2RAU2LTA1LTA1RPOTLPOTRC4922uF/50VC5322uF/50VTAO1LTAO1RPREOLPREOR8NC9NO73NC2NO4+1-10RLA1EA2-24R224K7R21100RR26100RR49100KR44100KSENS1SPKDC2SPKDC3GND4VEE5RLA6DIS7MT8VCC9U3TA7317PR187K5R9330KR1447KR775KR5100KR333KR447KR1215KC2022uF/50VC130.47uF/100VC19100uF/10VC25100uF/10VD61N4148R27K5C26

4、1uF/100VR6100KC18100uF/10VC24100uF/10VR20180RC15100nFC14100nFC12100nFC11100nFJ6GNDD71N4148TA1RTA1LR38100KR43100KCursa Pre-Amplifier Ver#3MUTE+5VTAPE/RLA1R584K7R544K7C4547pFR42100RR6422KPre-amp output levelGain Range settingswith 200mV input.xxxxxxxxxxxxxxxxx 1 = 0.2V (Tape1) 2 = 0.8V (Alpha) 3 = 1.2

5、V (Mute)xxxxxxxxxxxxxxxxxSwitch S2 to on and then power upthe pre-amp.Using Alpha, Mute & Tape1set the gain level.Power down pre-ampThen turn S2 to offThis puts the settingin memory.xxxxxxxxxxxxxxxxxTape1 - 1 Volume LED onAlpha - 2 Volume LEDs onMute - 3 Volume LEDs on 12345678910SK910PIN_DUAL_ROWLI

6、NRIN12345678910SK810PIN_DUAL_ROW+15V-15VDISKR+15V-15VDISKLC27100nFC21100nFC22100nF+UNREGT1BC546BT4BC639R1333KR478K2C4347pF32184U4ATL072567U4BTL072R37470KR25470KR35560RR30560RC38100nFC32100nF+15V-15VC41470nFC36470nFC3722uF/50VC3922uF/50VR34100KR32100KR484K7R404K7C3547pFD191N41488NC9NO73NC2NO4+1-10RLA

7、2EA2-5+5VTAPE/RLA2TA2LTA2RTA2RTA2LTAO2LTAO2RPREOLPREORT14BC546BT8BC546B+15VT9BC640T15BC640T102N5401T22N5401T12BC639T6BC639D211N4148D221N4148D131N4148D121N4148D201N4148D231N4148D241N4148D251N4148D91N4148D101N4148D111N4148D141N4148R59180RR17180RR6668RR7268RR1968RR2468RR7422KR2722KR28330RR652K2C6622pFC

8、3022pF+15VC65100nFC68100nF+15V-15V+15VT32N5401T112N5401R77330RR67680RR162K2R8680RR75220RR29220RLDCRDCRLARLALRGNDSK1RCA/2/M1234S1 SW-DIP2R1522KR6822KSK7RCA/4/SSK3RCA/4/SSK4RCA/4/SSK6RCA/4/SSK2RCA/4/SC46100nFC51100nFR63 10KR11K5LED1LEDD5BZX85C15VCDRCDLTUNLTUNRAU1LAU1RAU2RAU2LSWRSWL8NC9NO73NC2NO4+1-10R

9、LA7 EA2-5RLA6 EA2-5RLA5 EA2-5RLA4EA2-5+5VAUX1/RLAPHONO/RLAAUX2/RLACD/RLATUNER/RLADISKLDISKR8NC9NO73NC2NO4+1-10RLA8EA2-5C4222pFC6222pFC54100nFC56100nFDGNDDGND12LK1LINKLIN4LGND5LMO2LFO3RFO14RMO15RIN13RGND12CSB6DATA9CCLK10MUTEB8AVDD1AGND16DVDD7DGND11U5WM8816+5VAVDDDATA8816CLK8816CS8816DGNDC5710uF/63VC5

10、8100nFC6110uF/63VVin3GND2+5V1U8uA78L05ACC63100nFAVDD+12VT5BCV62JF1AU404JF1BU404T7BC546BT16BC546BC31100uF/10VPR1200KT13BCV62JF2AU404JF2BU404PR2 200KC67100uF/10VS2SW-SPSTGAINSWGain Range EnableAUX1/RLAPHONO/RLAAUX2/RLACD/RLATUNER/RLADGND+5VDATA8816CLK8816CS8816TAPE/RLA1MUTE1234567891011121314151617181

11、920212223SK5FLAT23+12VTAPE/RLA2GAINSWGNDMods to MM/MC PCB.1uF Polyprop0.47uF Polyprop4.7uF PolypropIncrease sizeDepth top & bottomC31000uF/35VC101000uF/35VJ5 GNDJ4ACJ1ACC61000uF/35VC91000uF/35VC81000uF/35VC71000uF/35VC41000uF/35VC51000uF/35V+UNREG-UNREGJ3 GNDJ2 GNDF12ATF22ATC21uFC11uFD31N4003D41N4003D21N4003D11N4003RadioFans.CN 收音机爱 好者资料库