NAD-C427-tun-sm 维修电路原理图.pdf
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1、NAD Digital Media Tuner Digital Media TunerSERVICE MANUAL C427C427RadioFans.CN 收音机爱 好者资料库TABLE OF CONTENTS DESCRIPTION P A G E SPECIFICATIONS.4WIRING DIAGRAM .5BLOCK DIAGRAM.7 PCB LAYOUT.11-15EXPLODED VIEW PARTS LIST EXPLODED VIEW ELECTRICAL VIEW PARTS LIST.16-23WIRING DIAGRAM PARTS LIST.6.24-24. .2
2、4-24CIRCUIT DIAGRAMS.8-10RadioFans.CN 收音机爱 好者资料库 SPECIFICATION FM SECTION Usable Sensitivity (98 MHz) 10 dBu Signal/Noise Ratio 65 dB (60 dB_ IHF-WTD Mono) 60 dB (60 dB_ IHF-WTD Stereo) Frequency Response 1.5 dB (20 Hz - 15 kHz, 60 dB_) Channel Separation (60 dBu) 30 Hz 33 dB 1 kHz 40 dB 10 kHz 32 d
3、B Capture Ratio (40 dBu) 3 dB AM Suppression 50 dB (60 dBu, 100% Mod. FM, 30% Mod. AM) Image Rejection (119.4 MHz) 70 dB I.F. Rejection (10.7 MHz) 70 dB Pilot Suppression (60 dBu) 60 dB Total Harmonic Distortion* - Mono 0.4% Stereo 0.8% Auto Search Sensitivity 24 dBu RDS Decode Sensitivity 26 dBu AM
4、 SECTION Usable Sensitivity (999/1000 Hz) 55 dB_ Signal/Noise Ratio (5 mV in) 42 dB Total Harmonic Distortion (5 mV in) 1.5% IF Rejection (450 kHz) 40 dB Image Rejection (F+2xIF) 28 dB Selectivity 20 dB Loop Sensitivity (20dB S/N) - 999/1000 Hz 66 dB 603/600 Hz 66 dB 1404/1400 Hz 66 dB Frequency res
5、ponse (100 - 2.3 kHz, 5 mV) 6 dB 4C427 WIRING DIAGRAM FM/AM Tuner1Main Board2FPP BoardEncorder Board4PSU Board3R140R674C665R671U6001M201K207C658U614C1001R623C646R1348R1352C1002J601R1002C616C617C688R681D607C1443D606C609R607C608Q1010R1347C1444R662R622R698C649R606Q1007D1054K603D602C652R652R654Q602R1355
6、Q1008Q1011R1345C694R675C666C689Y601R682C667R673C660R649C692R690C697R648R691R696R697C693R695C645R692Q601C698C644C696D601K601C669C647R683R685R678U617R659C681J608R672J606C683C685R679R676D603C684C686Q6001R677C674C682Q604R684R680C687U610J602R657C650C690C691C1011D604D605U613R693R694R665C695R62R61R664R687U
7、611R667J604J603R668C659R663XM301R655U609R686Q603C657R650R666R669U612R1001R670P601U210C207R2000R233R232R229C218C214C220R208U208C204R203C203R2001R2002Q204C227R250R215R248R213R212R211R210R234R219C219R227C210C221R207R214R209R235C209R204C206R221R228D201R205U205R222U206C205U203R243C223U212R237K204U209U211
8、D2002C222C224C208R236C226R201D202Q201C202C225U201R202C201C229C230R260C228Q206D205C232Q205R261R265R267C243D209R266T201K206R240Q207C245R253Q202Q203R252R245R244R251D208C244R268Q210R280R281R282R262R241D207C242C241C240D206C231K203R242R263R264K202R256R257D717C921C668C922R141J605C1000R1000R143D119C655C653C
9、654C656R64P602C907P902D904L901CY901+D901+D902C932T901CY903D903U902C903C906Q901C918C927C908L904C926U908S903D911C920C919U904S902T902CX902CY902C904TH901CY904TH902K901C917D909+R914C931D906L903CX901L902ZV901U905+C925C923S901J901FUSE901C405C400C234R254R2508C237R259R255C235R258C236V201USBR238K201R239K2055I
10、temPart NumberDescriptionRemark114-42717-00Cable,1.25mm,17PIN,L=95mmTuner To Main Board214-42724-00Cable,1.0mm,24PIN,L=240mmKey Board To Main Board314-44604-01Cable,UL2468#26AWG,4PIN,L=80mmKey Board To Encorde Board414-42709-00Cable,UL2468#26AWG*9C,9PIN,L=240mmPSU Board To Main BoardWIRING DIAGRAM P
11、ARTS LIST6SignalPowercontrolKUANGXIN FM/AM/RDS MODULEkst-mb114ma1-23D1G2V3GP1UV701QSKey and IR front panelFM ANTENNAAM ANTENNAENCODERFM/AM LOFM/AM ROSPIRDS DATALOROTRIG INIR INRS232LOGICBufferIR TRIG RS232MAIN PSUStandby PSU(TNY274PN)5V 1AMAIN LMAIN NNAD C427 BLOCK DIAGRAMVERSION: V1.0Drafted by: Be
12、nData: 2013-06-25standby (0.2W dissipation )PSU BOARDLDOAMS11173V3S-VF3V3D+/-12V 0.5ASWITCH+8VTRANSFORMER+VF+8V 0.5ATRANSISTORLDOAMS1117GPIO+8V5VS5VDAPM2301ConversingVFDBOE CIG128X32Main MCUM30281FAHPSPII2CGPIO3V3SVDF Driver MCUPIC18F26K203V3D74LCX244-VF+VFAC INLET-12V+12V7C60 81N 2C6161N 2R60 747R
13、JR62 347R JC60 9220 PC617220 PLRchassi s3132K603AJRC-27F/012-SR60 6470 RR62 2470 RAGNDJ601AJ601B+12VAAGNDC66933U /25VC66833U /25V1234567891011121314151617P6011. 0-9-17PW BR D S_D AT AR D S_C LKSTER EOPLL_DOPLL_C ETUN ER DPLL_C LKPLL_DIDGNDAGND+12VAAGNDC64410 0NC646220 U /25VC64510 0NC674 47nFR6772K2
14、IR BR67810k232GNDR6761K1234567891110J608D Connect or 9/ EN1C1+2V+3C1-4C2+5C2-6V-7RIN8ROUT9/ INV10DIN11FCON12DOUT13GND14VCC15/ FCOFF16U617M AX3221C681100NC682100NC690100NC691100N232GNDC686100N3V3S232GND232GNDR683330RR685330RR232_RXR232_TXC68510U/ 10V,R67910RTPS A106M 010R 0900C68722NR68010RD6041SS352
15、D6051SS352232GNDDGNDR684100RC_M U TEC68822NR68110RD6061SS352D6071SS352AGNDch assi s3R649470RR648470RFM / AM _ROFM / AM _LOR6544k7R6520RQ6022SC1815C64910ND6021N4148C652100PAGND+12VA465K603B3V3SDGND3V3SC65 9100NY 60118.432 MH zC66 720PC66 620PDGNDR67 0100KdgndC66 0100N3V3S12J60 4CON 2R66 710RR67 51M E
16、GC65 822U F/16VP10257P911P902CN V SS3P87/X CIN4P86/X CO U T5RESE T6X O U T7V SS8X IN9V CC10P85/N M I11P84/IN T212P83/IN T113P82/IN T014P8115P8016P7717P7618P7519P7420P7321P7222RXD2/ P7123TXD2/ P7024TXD1/ P6725RXD1/ P6626P6527P6428P3329SO3/ P3230SI3/ P3131CLK332TX D 0/P6333RX D 0/P6234CLK 0/P6135P6036
17、P2737P2638P2539P2440P2341P2242SC L/P2143SD A /P2044P1745P1646P1547P0348P0249P0150P0051P10752P10653P10554P10455P10356P10158AVSS59P10060VREF61AVCC62P9363P9264U 611M30281F A HPRESET1GND2RESET3VDD5M R4U 614TPS 3825DGNDR66 247KDGNDCLK1BUSYR67 333RCNVssCERESETDGND3V3SR66 80R12J60 3CON 2R67 247K3V3SR232_RX
18、R232_TX3V3SDGND1234567891011121314J60 6HEA DER 7X 2 2.54 pitchCLK1BUSYCNVssCERESETR232_RXR232_TXR66 3A120RR66 3B120RR66 4A120RR66 4B120RK EY _ST BSC LSD AKEY_M ISOIRFIRBA01A12A23Vss4SDA5SCL6W P7Vdd8U 61224LC 16DGND3V3SC65 7100NSCLSDADGNDR66 4C120RR 650B120RR 650C120RR 650D120RR 650A120RST BYDGNDLED_
19、BFPCLKaFPM OSIaVFM ISOKEYM ISOaVFSTBaKEYSTBaIRFa123456789101112131415161718192021222324J602To FPP Board8VDDGNDEN CA aEN CB aLED_B1G1A121Y118A241Y216A361Y314A481Y412V CC20G N D102G19B1112Y19B2132Y27B3152Y35B4172Y43U61074LCX244DGNDC650100nDGNDDGNDR65 9B120RR65 9C120RR65 9D120RR65 9A120RDGNDFPM OSIFPCL
20、KVSTBKEY_STBR65 7B120RR65 7C120RR65 7D120RR65 7A120RIRFEN CAEN CBKEY_M ISOE N CAE N CBVFM ISOFPCLKFPM OSIV ST BVFM ISOA01GND2A13Y4Vcc5S6U609NC7SZ157DGNDM ISOSel3V3SC647100NDGND3V3S3V3S514J60 5AS CJ3 51-D S S WC66 510 0nZR67 433K J232GNDtri g iTRIGR67 110 0KJ3V3SbecQ 604D TC114232GNDTRIGSTER EOPLL_DO
21、PLL_C ETUN ER DPLL_C LKPLL_DIR66 5A120RR66 5B120RR66 5C120RR66 5D120RR66 647KR66 947K3V3SR D S_D AT AR D S_C LKM UTER 655120RC68922NR68210RAGNDDGND+12VA3V3S8VDDGNDDGNDG1O U T2IN3O4U613AMS1117-3.3DGNDC654100NC65633U /25VC653100NC65533U /25V+5VS+5VSDGNDQ 603DTC 114DGNDSTBY2521J60 5BS CJ3 51-D S S W232
22、GND78K603CJRC-27F/012-SC683EM I100pC684EM I100pDGNDR6210KR6110K3V3SR6410KEN C_EnterENC_Ent erDGND8VDR1431KTRIG_DECQ 600 1D TC114a11gnd2a23y24vcc5y16U6001NC7WZ17C1011100n3V3S232GNDD 6031S S 3 523V3SR1402KR14120KTRIGBVFD_BUSYaV FD _BU SY aTRIG B3V3S232GNDC_M UTEQ10102SA1015Q10112SC1815R135212KR13454K7
23、+12VAD1054BAT54SR134747KC144310 0U /25 VC144447U /25VAGND+12VAR13484k7Q1007DTC114EKADGNDQ1008DTC114EKADGNDR135510K3V3SM UTELED_ALED_AAAKKD119M M 3Z4V7T1GR68 6120RR68 7120R123456789P602TO PSU boardR690100KR691100KAGNDC69 210 0PC69 310 0PR66 3C120RC695100NC69 422U F/16VDGNDR6920C696N. I .R6950R694220R
24、693220DGND8VDC1000N. I.C1001N. I.C1002N. I.R10000RR10010RR10020RDGNDXM 300HOLEXM 301HOLEXM 302HOLEDGNDAGNDBLEN DBLEN DR6983K9465K601BJRC-27F/012-SR6964k7R6970RQ6012SC1815C69710ND6011N4148C698100PAGND+12VA78K601CJRC-27F/012-SCIRCUIT DIAGRAMS1.MAIN BOARD VM2.08 5VF3V3FC20222u/6v3C203100NDGNDC209100N1G
25、1A121Y118A241Y216A361Y314A481Y412VCC20GND102G19B1112Y19B2132Y27B3152Y35B4172Y43U20674ACT244DGND5VFC205100nDGNDDGNDF-1F-2BK14LAT15CLK16SI17VH9VH10GND11GND12CIG128X32F-3NC8VDD13BKG14LATG15CLKG16SIG17SOG18NC19SI220CLK221LAT222BK223F+26F+27F+28U203CIG128X3201VFD BK1VFD LAT1VFD CLK1VFD SI1VFD BK2VFD LAT2
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