Arcam-DivaA75-int-sm维修电路原理图.pdf
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1、A65/75DiVA A65, A75 & P75 PlusAmpli ers Service Manual ARCAMIssue 1.0RadioFans.CN 收音机爱 好者资料库Contents List Contents list Circuit description Service guide Circuit diagrams Component overlays Circuit board parts list General assembly parts list RadioFans.CN 收音机爱 好者资料库A65, A75 & P75 Service Guide Fault
2、 diagnostics Fault Action No power Check mains fuse Check transformer connections Check power supply rails Stuck in protection Check power supply rails Check protection circuit voltages Check for dry joints on o/p devices Intermittent audio on one channel Check for dry joints around o/p devices Fail
3、s to respond to commands Check supply to remote circuit Check IC Z900 Check remote flex foil cable Check for dry joints on selector pcb Volume control rubs on front panel Pull knob out from fascia Audio crackles on o/p Check for component break down using hot air gun & freezer spray Check transforme
4、r connections Power supply test points Position Voltage LK125 +37 volts DC LK126 -37 volts DC LK271 or black speaker terminal 0 volts LK303 +15 volts DC LK301 - 15 volts DC Q300 emitter +38 volts DC Q304 emitter +38 volts DC Q302 emitter -38 volts DC Q305 emitter -38 volts DC D910 emitter +5 volts D
5、C remote supply IQ settings Model IQ setting Comments - (22/01/02) A65 37mV A75 37mV P75 37mV A85 12mV Set for 8.5mV cold, reset for 12mV when warm P85 12mV Set for 8.5mV cold, reset for 12mV when warm A65 plus 12 to 15mV A75 plus 12 to 15mV P75 plus 12 to 15mV Hints & tips To isolate a fault betwee
6、n pre and power stage remove C602 (left channel) or C702 (right channel). Always check and re-solder o/p device SAP15N and SAP15P pin connections. Replace Z900 IC if software version is below version 3 ( note version 82 is also ok ). Make sure R127 is not touching LK130. When replacing the top cover
7、 with a new top it may be necessary to re-drill the fixing holes. ISSUEDRAWING NO.DRAWING TITLEDATEFilename:ECO No.DESCRIPTION OF CHANGEL942C1_1.0.PRJA65 PLUS AMPContact Engineer:L942C111-Dec-2001INITIALSPrinted:17SheetofNotes:Contact Tel:(01223) 203 200Travis PierceA & R Cambridge Ltd.Pembroke Aven
8、ueCambridge CB5 9PBWaterbeachPWRLEFTPROTECTIONA1SP2_SEND_LSP2_RETN_LOP_LA1LEFT CHANNELL942C5_1.0.SCHACLT1MUTEAVCONTROLTAPECONTROLMUX1MUX2MUX3PREMUTEPROT SENSEREMOTE CONTROLL942C7_1.0.SCHSELOPRSELOPLMUX1MUX2MUX3TAPECONTROLACSENSEPROT_OP_LPROT_OP_RPROTECTIONMUTEHPSW2HPSW1TAPOLTAPORPROT SENSEPHONO & IN
9、PUTSL942C3_1.0.SCHACSENSEACLT1POWER SUPPLYL942C2_1.0.SCHPWRRIGHTA1SP2_RETN_ROP_RSP2_SEND_RA1RIGHT CHANNELL942C6_1.0.SCHPWRLEFTPWRRIGHTSELOPRSELOPLHPSW2AVCONTROLHPSW1SP2_SEND_LSP2_RETN_LOP_LOP_RSP2_SEND_RSP2_RETN_RPREMUTETAPORTAPOLPROT_OP_RPROT_OP_LTONE CONTROLL942C4_1.0.SCHTGP12/12/01PRODUCTION RELE
10、ASE1.0USE exlude A65 FILTER FOR BOM01_E020TOP SHEET FOR A65 L942AYISSUEDRAWING NO.DRAWING TITLEDATEFilename:ECO No.DESCRIPTION OF CHANGEL942C5_1.0.SCHA65 PLUS AMPContact Engineer:L942C511-Dec-2001INITIALSPrinted:57SheetofNotes:Contact Tel:(01223) 203 200Travis PierceA & R Cambridge Ltd.Pembroke Aven
11、ueCambridge CB5 9PBWaterbeachQ600BC556BQ601BC556BQ6042SA970GRQ606BC546BQ607BC546BR617680R MFR61910K MFR61810K MFR61347R MFR61447R MFR612100K MFR6001K0 MFPWRLEFTQ6112SC2240GRQ6102SC2240GRR62010K MFQ6032SA970GRQ608BC546BQ609BC546B+C601100U EL 100V+C600100U EL 100V0V_HF+C61610U ELL6002U2H LAC SMALLR631
12、2R2 CFR6304R7 W2 CFD6031N4003F+37V-37VC621470P CDRLY1ARLY G5Z-2A-EC620470P CDC6221N0 CDSPLD600SPLS600PD6OP_LSP2_SEND_LSP2_RETN_LR6162K7 MFR611100K MFC603100P PPW0V_SIG0V_HF0V_SIG0V_HFQ6122SC2240GRR627430R MFR606100R MFR605100R MFR6256K8 MFR62210K MFR621680R MFR62947K MF+C61710U ELQ605BC556BA1PROTECT
13、IOND6041N4003FR628430R MFR6266K8 MF+C61810U ELR608100R MFR607100R MFA1D6051N4148D6061N41480V_LS_L0V_LS_LQ602BC556BR61547R MFR601100R MFR602100R MFR603100R MFR604100R MFSPLE600Left Channel Power AmplifierQ614SAP15NQ615SAP15PD6004V7 400MWISSUEDRAWING NO.DRAWING TITLEDATEFilename:ECO No.DESCRIPTION OF
14、CHANGEL942C7_1.0.SCHA65 PLUS AMPContact Engineer:L942C711-Dec-2001INITIALSPrinted:77SheetofNotes:Contact Tel:(01223) 203 200Travis PierceA & R Cambridge Ltd.Pembroke AvenueCambridge CB5 9PBWaterbeachWARNING SAFETY CRITICAL COMPONENTREPLACE WITH IDENTICAL PARTuC, Volume Drive & Remote ControlC91210N
15、CDC90010N CDR9001R0 FUD9061N4003FD9071N4003F+C9201M0 25VC91310N CDMOTE900P900+5vVOLUME DRIVEMOTOR DRIVER+5VGND1MD12CC13REF4MC15MC26VCC17VCC28CC29MD210Z905BA610912VOLMOT9001Y271ACLT1MUTEMUX1MUX2MUX3AVCONTROLTAPECONTROLR915220R MFA01A12A23VSS4SDA5SCL6WP7VDD8Z90624C01C917100N CDX900CST4.00C918100N CD+C
16、914220U EL+5v+5v+5vC919100N CD123SW900A2PCO_NON_LAT456SW900B2PCO_NON_LATR912100K MF+ C92110U ELD9101N4148R91310K MF+5v+5VR9144K7 MF0V_DIG0V_DIG0V_DIG0V_DIG0V_DIG0V_DIG0V_DIG0V_DIG0V_DIG0V_DIG0V_DIG0V_DIG0V_DIGVDD16GND8Z907B74HC4051R90410R MF+C915100U ELPREMUTE0V_DIG+5VMOTSUP900VOLM901VOLM900REMO900C
17、916100N CD123LK9033WAY CABLE HOLDERD9111N414812345678910SK900FFC10VR902100R MFR903100R MFISSUEDRAWING NO.DRAWING TITLEDATEFilename:ECO No.DESCRIPTION OF CHANGEL942C3_1.0.SCHA65 PLUS AMPContact Engineer:L942C311-Dec-2001INITIALSPrinted:37SheetofNotes:Contact Tel:(01223) 203 200Travis PierceA & R Camb
18、ridge Ltd.Pembroke AvenueCambridge CB5 9PBWaterbeach321Z100ANE5532C119100P PPR10047K MFR108470R MFC12447P CD+C12522U ELR110680K MFR11256K MFC1274N7 PPC1291N3 PPC120100P PPR10147K MFR109470R MFC12347P CD+C12622U ELR111680K MFR11356K MFC1284N7 PPC1301N3 PP567Z100BNE5532-15V+15VCDTUNERVCRAV/DVDTAPE INT
19、APE OUTEMC1NFSK100APHONO4GBOT56TOP4NFSK100BPHONO4GEMC1NFSK103APHONO4GNFSK103BPHONO4GEMC1NFSK102APHONO4GNFSK102BPHONO4GEMC1NFSK101APHONO4G84Z100CNE5532Phono Stage & Input SelectionD1041N4148D1061N4148D1051N4148D1071N4148D1081N4148D1121N4148D1131N4148D1091N4148D1141N4148D1101N4148D1151N4148D1111N4148D
20、1241N4148D1201N4148D1211N4148D1251N4148D1221N4148D1261N4148D1231N4148D1271N4148D1011N4148D1031N4148D1001N4148D1021N4148R1181K0 MFR1191K0 MFR1221K0 MFR1231K0 MFR1241K0 MFR1251K0 MFR1261K0 MFR1271K0 MFR1281K0 MFR1211K0 MFR130100K MFR131100K MFR133100K MFR134100K MFR135100K MFR136100K MFR137100K MFR142
21、100K MFR143100K MFR144100K MF+15v+15v+15v+15v+15v+15v+15v+15v+15v+15v+15v+15v-15v-15v-15v-15v-15v-15v-15v-15v-15v-15v-15v-15vVCROLVCRORTUNOLTUNORCDOLCDORDVDOLDVDORTAPEOLTAPEORAUXOLVCROLTUNOLCDOLDVDOLAUXORVCRORTUNORCDORDVDORTAPECONTROLMUX1MUX2MUX3MUX1MUX2MUX3+5v+5v+15v+15v+15v-15v-15v-15vTAPECONTROLR
22、1201K0 MFR1171K0 MFR129100K MFR132100K MFAUXOLAUXORTAPEOLTAPEORC134470P PPWC144470P PPWC143470P PPWC142470P PPWC141470P PPWC140470P PPWC139470P PPWC138470P PPWC137470P PPWC135470P PPWC136470P PPWC133470P PPW+5vR15447R MFR15547R MFC122100P PPC121100P PPD1161N4148D1181N4148D1171N4148D1191N4148-15v-15v
23、+15v+15v+15v+15v+15v-15v-15v-15v567Z104BTL072321Z104ATL07284Z104CTL072SELOPLSELOPRR140100K MFR141100K MFMUX3MUX2MUX1TAPECONTROL+15V-15VRLY1CRLY G5Z-2A-EPWR1IN12IN230V4V-5O6FB7RC8V+9Z101TA7317PR10547K MFR10347K MFR10247K MFR10447K MF+C1481U0 ELR149100K MFD1281N4003FR10647K MFQ1002SC2240GRR1531K0 1W C
24、FD1301N4003FR14510K MFR150100K MF+C149100U EL+37VR15118K MF-37VR15233K MFR10747K MFD1291N4003FR1472K7 1W CF+37VR1462K7 1W CFRGLED100LED RED/GRN 3MMD1315V6 400MW132LK100L856CAR148470R FUACSENSEPROT_OP_LHPSW1MUTEPROT_OP_RC112100N CDC113100N CDC109100N CDC114100N CDC110100N CDC118100N CDC107100N CDC108
25、100N CDC101100N CDC102100N CD+C14510U EL+C14610U ELC115100N CDC116100N CDR139100K MFR138100K MFPROTECTION0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_SIG0V_
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