Arcam-A28-int-sch维修电路原理图.pdf

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1、ISSUEDRAWING NO.DRAWING TITLEDATEFilename:ECO No.DESCRIPTION OF CHANGEL991CT1_2.2.SCHA28/P28 - Top Level SheetContact Engineer:L991C125-Apr-2008INITIALSPrinted:18SheetofNotes:Contact Tel:(01223) 203 200Andrew DuttonA & R Cambridge Ltd.Pembroke AvenueCambridge CB5 9PBWaterbeach23425-45V_R+45V_R0V(SIG

2、)-45V_L+45V_L0V_LS_L+4.8V(D)9VRMSPWR_ON-38V_VFD0V(D)0V_HF_L0V_FB_L0V_FB_R0V_HF_R0V_LS_R+15V(A)+5V(A)-15V(A)0V(PSU)FIL_1FIL_20V(SIG_2)Power SuppliesL991CT2_2.2.SCHPRE_OUT_L0V_FB_LOUTPUT_L0V_LS_L0V_HF_LVIPROT_L+45V_L-45V_LPower Amp LeftL991CT4_2.2.SCH+45V_L0V(D)D1001N4003DO-41TR100BD179TO-126TR101BD17

3、9TO-126D1011N4003DO-41Right OutputsLeft OutputsOUTPUT MUTING0V_LS_L0V_LS_RPRE_OUT_R0V_FB_ROUTPUT_R0V_LS_R0V_HF_RVIPROT_R+45V_R-45V_RPower Amp RightL991CT5_2.2.SCH9VRMS+4.8V(D)+45V_R+45V_L0V(D)0V_LS_L0V_LS_R0V_HF_L0V_HF_R0V_FB_R0V_FB_L0V(SIG)-45V_L-45V_R-38V_VFD+15V(A)-15V(A)+5V(A)TAPE_0VOL_SCLK0V(SE

4、R)VOL_SDATALISTEN_0LISTEN_1LISTEN_2+15V(A)+5V(A)-15V(A)0V(SIG)0V_FB_RTAPE_0TAPE_1VOL_SCLK0V(SER)VOL_SDATALISTEN_0LISTEN_1LISTEN_2*PRE_MUTE0V(D)+45V_L-45V_L0V_HF_L+45V_R0V(D)0V_HF_R0V_FB_L-45V_R-38V_VFD9VRMS-45V_L+4.8V(D)+45V_L+45V_RPreAmp ControlsPower SuppliesFlexfoilSPKR1_ONSPKR2_ONFIL_1FIL_2FIL_1

5、FIL_20V(SIG)FD100FD101Q113Q114Q115Q118TAPE_1TAPE_2TAPE_2A28 & P28 Display CircuitryL991CT8_2.2.SCHPRE_OUT_LPRE_OUT_R0V_PREOUT0.38Hz_CLK0V(D)+4.8V(D)+45V_L0V_CHASSREMOTE_PTRIG_IN*RESETREMOTE_NA28 Trigger, RC5 & P28 Sig DetectL991CT7_2.2.SCH0V(D)+4.8V(D)-38V_VFDLISTEN_2LISTEN_1LISTEN_0*PRE_MUTEVOL_SDA

6、TAVOL_SCLKTAPE_0VIPROT_RVIPROT_L+45V_R-45V_L+45V_LOUTPUT_LOUTPUT_R0V_SER0V_D_PRE0V(SIG)TAPE_1TAPE_20.38Hz_CLK9VRMSFIL_1FIL_2SPKR2_ONPWR_ONSPKR1_ON*RESETREMOTE_PTRIG_IN+4.8V_D_PREVOL_*CSREMOTE_NA28/P28Protection & MicrosL991CT6_2.2.SCHPRE_OUT_LPRE_OUT_RLISTEN_2LISTEN_1LISTEN_0*PRE_MUTEVOL_SDATAVOL_SC

7、LK-15V(A)+15V(A)+5V(A)TAPE_20V(SIG)0V_D_PRE0V_SER0V_PREOUTTAPE_1TAPE_0+4.8V_D_PRE*PRE_RLYVOL_*CS0V(SIG_2)A28 PreAmpL991CT3_2.2.SCH0V(D)+4.8V(D)+45V_LC101100N50V08050V(D)*PRE_MUTE0V(D)FIX100Dia 3.5mm1FIX101Dia 3.5mmFIX102Dia 3.5mmFIX103Dia 3.5mmQ121Q125R104330R1WCFR105330R1WCFR107100R1WCFR106100R1WCF

8、RLY102ANECEB2-5NURLY102BNECEB2-5NURLY102CNECEB2-5NUHEADPHONE OUTPUT & MUTE(NF ON P28)R1020R00W125 0805R1030R00W125 0805NFNF12345CON100AMPCT12345CON101AMPCTQ116Q117FIX104Dia 3.2mmL1002U2R1005R62WCFL1012U2R1015R62WCFD102BAS16SOT-323Q106Q111ANNOTATIONR110220R0W25MFR111220R0W25MFP101LS100G P PRECISIONLS

9、101G P PRECISIONR1122K20W1250805R1132K20W1250805QTYDESCRIPTIONPART No.NOTESITEMITEM1021Earth Lead Assy 75MM - This part is RoHS compliant.8M101VOL_*CSVOL_*CSR1140R00W25MFR108220R0W25MFR109220R0W25MF0V(SIG_2)0V(SIG_2)Rubber O-Rings fitted over UPPER HALF of amp supply caps (C228 - C231)GENERAL NOTEST

10、his is the Master Schematic for A28 (L991AY) and P28 PCBassemblies. Any changes to the schematics in this document must bereflected in the relevant child documents.These schematics follow a simple heirarchy scheme. Sheet symbols on the topsheet represent a child or sub-sheet. Net labels on sub-sheet

11、s are local orspecific to that sheet. Ports on the sub-sheets connect to sheet entries onthe parent sheet, where they are connected together.Primary power nets are denoted by type in parenthesis, e.g. 0V(D).Secondary nets are denoted by underscores, e.g. 0V_LS_L.To perform an electrical rule check o

12、r synchronise with the PCB, set NetIdentifier Scope to Sheet Symbols/Port Connections.Placed on top of: output relays (RLY100, RLY101), mains relay (RLY200),Soldered to SKT200When generating BOMs for L991AY, ensure that the relevantcomponents are fitted or not fitted (those with NF or FIT in the nea

13、rby text).ITEM103413/16 inch O-RingF232A28231NCLCLCRNCRLRSKT100HOSIDENHLJRLY100AOmronG5PA-2 24VDCRLY101AOmronG5PA-2 24VDCRLY100BOmronG5PA-2 24VDCRLY101BOmronG5PA-2 24VDCRLY100COmronG5PA-2 24VDCRLY101COmronG5PA-2 24VDCP102P103P105P100P104ITEM1046Pad Damping 15x6x3MM RubberE827APITEM1001Blank PCB A28

14、Power Supply And AmplifierL991PBPK20/04/2007Output devices replaced, seperate emitter resistors addedB.007_E068SLRR12/09/2007None to this sheet1.007_E156PK28/11/07Correct O ring quantity2.007_E226MJT25/03/08Added rubber damping pads on top of components.2.108_E069output chokes (L100, L101) and pream

15、p mute relay (RLY300)MJT07/04/08Removed 4-off handbag links (ITEM300, 400, 500, 700)2.208_E076RadioFans.CN 收音机爱 好者资料库ISSUEDRAWING NO.DRAWING TITLEDATEFilename:ECO No.DESCRIPTION OF CHANGEL991CT2_2.2.SCHA28/P28 Power SuppliesContact Engineer:L991C225-Apr-2008INITIALSPrinted:28SheetofNotes:Contact Tel

16、:(01223) 203 200Andrew DuttonA & R Cambridge Ltd.Pembroke AvenueCambridge CB5 9PBWaterbeach23425EARTHMAINS WIRING AND AUXILIARY SUPPLY0V(D)+4.8V(D)0V(D)+4.8V(D)ANALOGUE OP-AMP SUPPLIES-15V(A)+15V(A)EMC ShieldSH2001LNESKT200BULGINPX0580C2003N3250VCERC2013N3250VCERC209220N275VPP X2LIVENEUTRALFHLDR2002

17、0mm HLDRFHLDR20120mm HLDRC2033N3250VCERC2023N3250VCERRLY200BOmron G2R-24-5VDCRLY200AOmron G2R-24-5VDCRLY200COmron G2R-24-5VDCC204470N100VMKS2C210100N50V0805C211100N50V0805C2151000UF35VYKC2161000UF35VYKADJREG202LM337TTO-220ADJREG200LM317TTO-220C2241000UF25VYKC221100N100VMKS2PWR_ON0V(D)+4.8V(D)9VRMSPO

18、WER AMP SUPPLIESC205470N100VMKS2DBR201GBU8D+45V_R-45V_R-45V_L+45V_L-38V_VFDVFD SUPPLY0V_LS_L0V_HF_LTR200BC849BSOT-230V_LS_RR2152K20W12508050V(D)0V(SIG)0V_HF_R+5V(A)DBR200GBU8DC206470N100VMKS2C219100UF25VYK+4.6V to +5.3VADJREG201LM317TTO-220C2251000UF25VYK0V_LS_R0V_HF_R0V_HF_L0V_LS_L0V(SIG)R217680R0W

19、12508050V_FB_L0V_FB_R0V_FB_L0V_FB_RTrack by pre-out to pwr-in0V(SIG)SP2020V(PSU)D214BAS16SOT-323D210BAS16SOT-323D211BAS16SOT-323D212BAS16SOT-323D213BAS16SOT-323D215BAS16SOT-323C220100UF25VYKDZ200BZX84C5V6SOT-23C2283,300UF63VUSRC2293,300UF63VUSRC2303,300UF63VUSRC2313,300UF63VUSRFIL_1FIL_2ORANGE1BLUE2

20、ORANGE3CON200WAGO256R21922R0W1250805PCB Traces to route as shown here1A11B2A22B115V230VSW20018-000-0019(NF ON P28R2142K20W1250805R2132K20W1250805R210100R0W1250805R209100R0W1250805R207100R0W1250805R208100R0W1250805BLUEBLACKORANGEGREENBLACKGREYBLUEGREEN/YELLOWInterwinding Screen115V ac115V ac16Vac16Va

21、cORANGEBLUEORANGEWHITEL916TX(CHASSIS-MOUNTED)3.2VacWHITEWHITETR202FMMT497SOT-23R2162K20W1250805R20610R0W1250805C2261000UF10VYKANNOTATIONR218220R0W25MF1FIX200Dia 3.2mmDBR2033BDF01MHS200A6043PB23C/WHS202A6043PB23C/WHS201ASW50-28.8C/WITEM2031Clip For SW Profile HeatsinkF006D2001N4003DO-41D2031N4003DO-4

22、1D2021N4003DO-41D2011N4003DO-41C213100N50V0805C214100N50V0805(NF ON P28)0V(D)SP200SP201R2210R00W125 0805R2032R20W33FUFS200T2.5AS506FS201T2.5AS506FS202T500mAR452BLUE3DK GREY2ORANGE1CON201WAGO256GREEN1CON202WAGO256GREY4DK GREY3LT GREY2BLUE1CON204WAGO256GREY2GREY1CON205WAGO256GREEN1CON203WAGO256C21222U

23、F63VYK0V(D)C222100N50V08050V(SIG_2)SP2030V(SIG_2)For preamp bulk decouplingP201P200P202FS204T2AR452FS203T2AR452R2040R00W1250805R2050R00W1250805A28This EMC can should now not appear on any BoM as there is a safety issue regarding the can shorting to a live mains track on the top layer.Consider removi

24、ng the holes for the can or perhaps move mains tracks onto bottom layer for next PCB revision.NFP203P204PK12/09/2007R211 changed to 100R to reduce voltage drop to VFD supply1.007_E156115V115V42189V9V3765TX200PCB Mount Frame7A9311R211100R0W1250805PK28/11/07None to this sheet2.007_E226C20722UF20VOSCON

25、C20822UF20VOSCONC218100UF25VRXC217100UF25VRXMJT25/03/08C217, C218 changed series for voicing2.108_E069MJT07/04/08None to this sheet2.208_E076MN25/04/08No changes to this sheet2.308_E088RadioFans.CN 收音机爱 好者资料库ISSUEDRAWING NO.DRAWING TITLEDATEFilename:ECO No.DESCRIPTION OF CHANGEL991CT4_2.2.SCHA28/P28

26、 - Power Amp LeftContact Engineer:L991C425-Apr-2008INITIALSPrinted:48SheetofNotes:Contact Tel:(01223) 203 200Andrew DuttonA & R Cambridge Ltd.Pembroke AvenueCambridge CB5 9PBWaterbeach234250V_FB_LPRE_OUT_L0V_HF_L0V_LS_L0V_HF_LVIPROT_LOUTPUT_L0V_LS_L0V_HF_L+45V_L-45V_L0V_HF_L0V_HF_LBIASMEASURE BIASIN

27、PUT FILTERV TO I AMPINTEGRATING DC SERVOPNP CURRENT MIRRORNPN CURRENT MIRRORPRE DRIVERPRE DRIVEROUTPUT STAGEV-I PROTECTIONV-I PROTECTIONVI PROTECTSIGNAL TO MICROZOBEL NETWORKBOOTSTRAPBOOTSTRAPDZ404BZX84C15VSOT-23TR408FMMT497SOT-23C417100N50V0805C416470P100VFKP2C419100N50V0805C420100N50V0805C422470N1

28、00VMKS2C402100P100V0805C42510UF50VYKC423100UF100VYKC40510N100V0805C424100UF100VYKC412100UF25VYKC413100UF25VYKC42610UF50VYKC427100N100VMKS2C421100N50V0805R422100R0W1250805R427100R0W1250805R424100R0W1250805R4434K70W1250805R4201M00W1250805TR407FMMT497SOT-23TR402FMMT597SOT-23R43122R0W1250805R40222K0W125

29、080523184IC400ATL072CDSO-8657IC400BTL072CDSO-8TR404FMMT597SOT-23DZ405BZX84C15VSOT-23TR411FMMT497SOT-23R43422R0W1250805TR405FMMT597SOT-23D401BAS16SOT-323R4111K00W1250805R454100K0W1250805R456330R0W1250805R425100R0W1250805D402BAS16SOT-323TR409FMMT497SOT-23TR406FMMT597SOT-23TR410FMMT497SOT-23TR403FMMT59

30、7SOT-23R4141K00W125080512CON401HARWINM20-973R457330R0W1250805R429100R0W1250805R430100R0W1250805D403BAS16SOT-323D4061N4003DO-41D4071N4003DO-41R4595R62WCFR4424K70W1250805R426100R0W1250805DZ400BZX84C22VSOT-23DZ401BZX84C22VSOT-23R44110K0W1250805R43810K0W1250805TR416BC849BSOT-23TR417BC849BSOT-23TR400BC85

31、9BSOT-23TR401BC859BSOT-23SHEET 3R40647R0W1250805R40747R0W1250805R40547R0W1250805R40847R0W1250805R416220R0W25MFR415220R0W25MFR44522R0W25MFR44622R0W25MFR4521K01WCFR4531K01WCFD404BAS16SOT-323D400BAS16SOT-323C40822UF63VYKC40922UF63VYK0V_HF_L0V_HF_LC403100P100V0805RV400220RLINDZ406BZX84C3V9SOT-230V_FB_L0

32、V_FB_L0V_FB_LNFPRE DRIVER BIAS& TEMP. COMP.-NFR44410K0W1250805C40047P100V0805R4131K00W12508050V_HF_LR40022K0W1250805R40422K0W1250805R40110K0W1250805R43322R0W1250805C411100UF25VYKC40610N100V08051.6VNFC40147P100V0805R40310K0W125 0805C415100UF25VYKQ403Q409D4051N4003DO-41D4081N4003DO-410V_FB_L0V_FB_LADJ

33、USTITEM4000Con Jumper Socket 0.1IN Gold Blue - This part is RoHS compliant.8K004TR414AZDT758SM-8TR414BZDT758SM-8TR412AZDT6758SM-8TR412BZDT6758SM-8R449820R0W25MFR450820R0W25MFR447820R0W25MFR448820R0W25MFR4091K00W1250805R4121K00W1250805NFNFANNOTATIONREF400LM431AIM3SOT-23DZ402BZX84C3V9SOT-23DZ403BZX84C

34、3V9SOT-23R419470K0W1250805R421470K0W1250805D409BAV99SOT-23NFR45118K0W25 MFR45818K0W25 MFP401P402P404P405P420P407P409P408P410P411P427P429P430P431P432P413P414P415P440P449P451P452P433P454P456P438P439P442P458P459P444R423220R0W25MFR428220R0W25MF0V_FB_L0V_FB_L0V_FB_L0V_FB_LOUT_LR4171K00W1250805R4181K00W12

35、50805R460330R0W1250805R4404K70W1250805R43922K0W1250805123CON400HARWINM20-973*P403P406P400NFNFR4375K60W1250805A28Not Fitted. See note aboveTR415STD03PSTDTR413STD03NSTDSLRR12/09/2007Emitter resistors value change, output device footprint change1.007_E156R4550R223WSPRXR4610R223WSPRXC40410N100V0805C4071

36、0N100V0805PK28/11/07R432,435 now 150R. R436 now 1k02.007_E226R432150R0W1250805R435150R0W1250805R4361K00W1250805R410100R0W1250805C410100UF25VRXC414100UF25VRXMJT25/03/08C410, C414 changed. R410 now 100R. Corrected jumper notes.2.108_E069* - Default jumper setting is NOT FITTED.1 & 2 to increase bias v

37、oltage even more.2 & 3 to increase bias voltage;Fit jumper on pins:MJT07/04/08Removed handbag link ITEM4002.208_E076MN25/04/08No changes to this sheet2.308_E088ISSUEDRAWING NO.DRAWING TITLEDATEFilename:ECO No.DESCRIPTION OF CHANGEL991CT5_2.2.SCHA28/P28 - Power Amp RightContact Engineer:L991C525-Apr-

38、2008INITIALSPrinted:58SheetofNotes:Contact Tel:(01223) 203 200ANdrew DuttonA & R Cambridge Ltd.Pembroke AvenueCambridge CB5 9PBWaterbeach23425-0V_FB_RPRE_OUT_R0V_HF_R0V_LS_R0V_HF_RVIPROT_ROUTPUT_R0V_LS_R0V_HF_R+45V_R-45V_R0V_HF_R0V_HF_RBIASMEASURE BIASINPUT FILTERV TO I AMPINTEGRATING DC SERVOPNP CU

39、RRENT MIRRORNPN CURRENT MIRRORPRE DRIVERPRE DRIVEROUTPUT STAGEV-I PROTECTIONV-I PROTECTIONVI PROTECTSIGNAL TO MICROZOBEL NETWORKBOOTSTRAPBOOTSTRAPDZ504BZX84C15VSOT-23TR508FMMT497SOT-23C517100N50V0805C516470P100VFKP2C519100N50V0805C520100N50V0805C522470N100VMKS2C502100P100V0805C52510UF50VYKC523100UF1

40、00VYKC50510N100V0805C524100UF100VYKC512100UF25VYKC513100UF25VYKC52610UF50VYKC527100N100VMKS2C521100N50V0805R522100R0W1250805R527100R0W1250805R524100R0W1250805R5434K70W1250805R5201M00W1250805TR507FMMT497SOT-23TR502FMMT597SOT-23R53122R0W1250805R50222K0W125080523184IC500ATL072CDSO-8657IC500BTL072CDSO-8

41、TR504FMMT597SOT-23DZ505BZX84C15VSOT-23TR511FMMT497SOT-23R53422R0W1250805TR505FMMT597SOT-23D501BAS16SOT-323R5111K00W1250805R554100K0W1250805R556330R0W1250805R525100R0W1250805D502BAS16SOT-323TR509FMMT497SOT-23TR506FMMT597SOT-23TR510FMMT497SOT-23TR503FMMT597SOT-23R5141K00W125080512CON501HARWINM20-973R5

42、57330R0W1250805R529100R0W1250805R530100R0W1250805D503BAS16SOT-323D5061N4003DO-41D5071N4003DO-41R5595R62WCFR5424K70W1250805R526100R0W1250805DZ500BZX84C22VSOT-23DZ501BZX84C22VSOT-23R54110K0W1250805R53810K0W1250805TR516BC849BSOT-23TR517BC849BSOT-23TR500BC859BSOT-23TR501BC859BSOT-23SHEET 3R50647R0W12508

43、05R50747R0W1250805R50547R0W1250805R50847R0W1250805R516220R0W25MFR515220R0W25MFR54522R0W25MFR54622R0W25MFR5521K01WCFR5531K01WCFD504BAS16SOT-323D500BAS16SOT-323C50822UF63VYKC50922UF63VYK0V_HF_R0V_HF_RC503100P100V0805RV500220RLINDZ506BZX84C3V9SOT-230V_FB_R0V_FB_R0V_FB_RNFPRE DRIVER BIAS& TEMP. COMP.NFR

44、54410K0W1250805C50047P100V0805R5131K00W12508050V_HF_RR50022K0W1250805R50422K0W1250805R50110K0W1250805R53322R0W1250805C511100UF25VYKC50610N100V08051.6VNFC50147P100V0805C515100UF25VYKQ503Q509D5051N4003DO-41D5081N4003DO-410V_FB_R0V_FB_RADJUSTQ500Q511ITEM5000Con Jumper Socket 0.1IN Gold Blue - This part

45、 is RoHS compliant.8K004TR514AZDT758SM-8TR514BZDT758SM-8TR512AZDT6758SM-8TR512BZDT6758SM-8R549820R0W25MFR550820R0W25MFR547820R0W25MFR548820R0W25MFR5091K00W1250805R5121K00W1250805NFNFANNOTATIONREF500LM431AIM3SOT-23DZ502BZX84C3V9SOT-23DZ503BZX84C3V9SOT-23R519470K0W1250805R521470K0W1250805D509BAV99SOT-

46、23NFR55118K0W25 MFR55818K0W25 MFP501P502P504P505P507P508P509P510P511P513P514P515P520P527P529P530P531P532P533P538P539P540P542P544P546P549P551P552P554P556P558P559R523220R0W25MFR528220R0W25MF0V_FB_R0V_FB_R0V_FB_R0V_FB_ROUT_RR5171K00W1250805R5181K00W1250805R560330R0W1250805R50310K0W125 0805R5404K70W1250

47、805R53922K0W1250805123CON500HARWINM20-973*NFNFR5375K60W1250805A28Not Fitted. See note aboveTR513STD03NSTDTR515STD03PSTDSLRR12/09/2007Emitter resistors value change, output device footprint change1.007_E156R5550R223WSPRXR5610R223WSPRXC50410N100V0805C50710N100V0805PK28/11/072.007_E226R532150R0W1250805

48、R535150R0W1250805R5361K00W1250805R532,535 now 150R. R536 now 1k0R510100R0W1250805C510100UF25VRXC514100UF25VRXMJT25/03/08C510, C514 changed. R510 now 100R. Corrected jumper notes.2.108_E069* - Default jumper setting is NOT FITTED.1 & 2 to increase bias voltage even more.2 & 3 to increase bias voltage

49、;Fit jumper on pins:MJT07/04/08Removed handbag link ITEM5002.208_E076MN25/04/08No changes to this sheet2.308_E088ISSUEDRAWING NO.DRAWING TITLEDATEFilename:ECO No.DESCRIPTION OF CHANGEL991CT8_2.2.SCHA28/P28 Display CircuitryContact Engineer:L991C825-Apr-2008INITIALSPrinted:88SheetofNotes:Contact Tel:

50、(01223) 203 200Andrew DuttonA & R Cambridge Ltd.Pembroke AvenueCambridge CB5 9QRWaterbeachARCAMA2LED8055mmGRNLED 5mmLED8045mmGRNLED 5mmLED8035mmGRNLED 5mmR834330R0W1250805+4.8V(D)_DISPC817100N50V08050V(D)_DISPTO MAIN PCB - SHEET6+4.8V(D)_DISP+4.8V(D)_DISP0V(D)_DISP0V(D)_DISPC811100N50V0805C818100N50