NAD-7020-rec-sm2 电路图 维修手册.pdf
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1、BEPVICEMANUAL NADMODEL7020 AM/FMBTEPEORECEIVER STARTINGATSERIALNO:7218469 Stereo Rece,ver7020SoftCIppngEJ FMSteoJTg-ED FM889092949698100021040608 MHz AM !1I : KHz Speak-sBOssfretde 5e4ectotue48oIac oft A. ),FMMuteFM. p%O(5 A+B.Lev( Lou: r- 11 ANT IFQUADRATURE AUDIO AMP DETECTORAMP LEVEL LEVEL AFC DE
2、T DET AMP MUTEI MUTE DRIVE DRIVE - j FMMUTE SW-i B F, 11JING GREEN (SIGNALSTRE ANTJ LED DRIVE Ii Sw-i zZ IRF IF AMP AMP - SIGNALSTRENGHLEDDRIVER NINGLED I.FT DRIVER C (,4) AMP COMP AMP PLL DECODERDIViDER DE DE TERE)LE EMPHASSIS EMPHASSIS NETWORKNETWORK POWERSUPPLY SECTiON BUFFER SEDNDARY AMP LOWPASS
3、 FILTER PH0NC LAUX PLAY TAPE REC REC TAPE PLAY AUX PHONO . I SW-6a DINJACK3T1wII .H SPEAKER UI w S4 r- TERMINAL _ - . c. I It I ELiI, 17 18 J19 J20 C312 T303 D801 fl801 cm RRfl2 E L.-D E D802EE- R803 0 J8 C801 C802 _,g r_, NC322, e4 :Q o44:1 ! 314 R cJo * lld MH I% -LZJ-R715 .F2 1? _ 00 L _ SW5 G C7
4、)1 C703 7 F ii. 1 DINJACK IDINJACKRECORDLABij L() CP6BLU. BLACK . CP5P302C3041 _ RED0-Hh-f QT 1C30 R303 2 -L:1- IrI R301 3II .-.-, -LEJ-., T301T3020 C.) O0C) C)TT J?L HHC3O9 R305 C301 CP4 IHITE - .0 PLAYAUX PH0yio . J8w_,- ill 0 0) I) I x 0 B 11 MJ2955 Q617 2N3055 0615 0 0) to 0 I . *.x T CP19 CP20
5、GROUND U 1.TUNERAM. 2.TUNERFM. 3.TUNERFRONT END. 4.DELAYCONTROL. 5.HIGHLEVELPRE AMPLIFIER. 6.POWERAMPLIFIER OUTPUTSTAGE. 7.SOFTCLIPPING. 8.REGULATORFORTUNE 9.HIGI-iCURRENTPOWER SUPPLY. 10.SPEAKERSWITCH. 11.SPEAKERTERMINAL. 12.ATTENUATORFOR PHONES. 13.LEDASSEMBLY. ha.SOCKETFORPHONO PREAMPLiFiER. 15.S
6、OCKETFORMPX. 16.SOCKETFORPOWER AMPLIFIFRDRIVH43 STAGET C114I TPJ J42R116 JAROOrT1 J31 _ cE)y r- 2 IQ1O2(.U _1 1.- 1J56 -) TP3 IO105 A TP2_-rjj_ I ;: icO 80103 R118-, I I I ri C) I I rl 0 _( )- _1I )C)II R139 DI C j77 , :i ,C12k J I J37 0103 J0z ,I ,J38 LIR- R13 _-, E _: o_z- - EZ1oi _ 13 D104 -“ J76
7、 L_J0. u. p12 cPi: H 0 U) XIi1JC536 ICP7 1 CP8ii D506 ),_ R 0 C535 5 D502 C_i .- 50E:E E0Q504 0R506 R548 J8_ 51 I fl1 u io _ 1A IIIi T :1 _ jJ3 t% _ I C521 S il(3 0) S. I gI -S lyC O528 1OKCX2o 1 T 1OKCX2 533R527 - _ HSiNTA 0594VO T J49 r47 IICD )I , S., C50t1 LWIiI. i-I 2OKBx2 5OKMNX2 0 U) 6 - ( I1
8、 F? C915 240 47Q0P Er9w RED 16l BLUE BROWN FOR:E2. -F7:T1A!250V Fl C915 R98Q ;-i sw: WHITE -0 C916 YELLOW E.-F7:T1A1250V FORJFT.T1A1250V BROWN F7 E C915 GREEN WHJQ SW8b I ORANGE 120 YELLOW OP FOR:U3-F7:T14/2500 7020CIRCUITDIAGRAM ( ( ( ( Note: Thisisthebasicshematicdiagram,buttheactual circuitmayvar
9、yduetoimprovementindesign. 7 QTY 2 PARTS NO. 28-1017 28-1029 28-2015 28-2019 28-2020 28-2023 28-2024 28-2042 29-2045 31-1079F 31-1130 31-1139f 31-2021 32-2005 28-2059 12-3037 12-3038 12-3071 12-3039 6850-1024 6990-1128 7090-1129 7190-1129 7290-1129 S1BO4+ 73 I1OSL-2 74 S2B03+ IQ8SL-2 75 S5B03+ IO8SL
10、-2 76 A04A07 SLO1 77 N04B07 - 13.2SZ A046 TO7SLO1 DESCRIPTION PHONES, INSULATIONBUSH RUBBERFOOT MYLARFORPOINTER LAMPRETAINER CUSHION FORMIC CABINETRETAINER DIALPERSPEXCOVERRETAINER CUSHION POWERTRANSFORMER DEEMPHASSISSWITCH POWERSWITCH SOFTCLIPPINGSWITCH LAMP FUSE HOLDER MASKER FORPANEL(A) KNOB FORT
11、UNING KNOBFORCONTROL KNOB FORBALANCE KNOBFORPUSH CABINET P.C.B.FORTUNERAND AMP. P.C.B.FORPHONO MAINAMP, P.C.B.FORMPX MACHINESCREW TAPPINGSCREW TRIANGLESCREW WASHER NUT 7020ASSEMBLYDIAGRAM ITEMPARTSDESCRIPTION NO. 111-2047 BRACKETFORPCB 211-2086 BRACKET FOR TUNINGSHAFT 311-2104 BRACKET 411-2141BRACKE
12、TRIGHT 511-2142 RIGHTBRACKETFORDIALSCALE 611-2143LEFTBRACKETFOR DIAL SCALE 711-2173 BRACKETFORBACKPANEL 811-2182BRACKET LEFT 911-2186BRACKET FOR SELECTORSWITcH 1011-2217BRACKETFORPULLEY 11 11-2219 P. C,B.HOLDER 1211-3026LUG 13 11-4007I/OJUMPER 1411-5056HEATSINKA 1511-5057HEATS1NKB 1611-6039AUX.CHASS
13、ISRIGHT 1711-6044CENTER CHASSIS 1811-6052AUX.CHASSISLEFT 1911-6053FRONTCHASSIS 2011-6072BOTTOMCHASSIS 2111-7032 PULLEYSHAFT 2211-8098-1DIAL SCALE 2311-8099FRONTPANEL 2411-8100DIALPLATE 2511-8119-1DIALPERSPEXCOVER 2611-8170BACKPANEL 2712-1029CONNECTORANDNUT 2812-2007SPEAKERTERMINALSOCKET 2912-2012ANT
14、ENNATERMINALSOCKET 3013-2041PHONEJACK 3112-2105 SOCKETASSY(6P) 3212-2106SOCKETASSY(4P) 3312-2076DINJACK 3412-4014POINTER 3512-5019SPRINGFORTUNINGTHREAD 3613-5004PULLEY 3713-5029DIALDRUM 3813-5018TUNING WHEEL 3929-5008AMANTENNABAR 4014-3001TUNINGTHREAD 4114-5003 CORDBUSH4N-4 4215-2037GROUNDSCREW 4315
15、-2048PLASTICRIVET3x5.5 4415-2049PLASTICRIVET 3x6.5 . 4515-2051SPECIALSCREW : 4615-4010FIBERWASHER 1-)4723-3004 DICASTFO1RTUNINGKNOB . _i 4828-1016RUBBERBUSHINGFORLAMP : C QTY 4 2 2 5 5 5 8 17 34 4 4 4SPRINGWASHER R POWERCORD G _:H m A 1 0 I m m 0 C) 0 r) 0 P1 C POWERCORD D I2GREEN RED jrlTrIN J-3ROW
16、N 1 C m C z C m m 0 C A) 0 : xl (I) P1 0 -4 0 z C m a 0 C C C z C) POWERCCRD _ iD1! HITE IrI rn lDvY JL GREEN _ 1k) I ORANGE _ oBROWN -U (I) P1 0 L:zr- 0 E TRANSFORMER CPU 0 .CP13CPl6J CP14 z_Ocj0 z 0 , -94 oom :zio m Lf1C .1 (_)L c= 0 :o ni 0 =G-cL- .- C II ; 9r%4Q- o- -F-= 0 II 0 19-11292 wco 010
17、II C o- -0.- RFfl 0D 11I H1T 1_ C, -tJ : VR5O1 1911293 z I C -U mi -0 Iji PARTSLIST PARTSLIST SYMBOLNO.PARTSNO.DESCRIPTION .REF. BD9O130-1049BRIDGEDIODEKBLO276.00 BK6O1,BK60215-3011BREAKERA-2288.00 clol17-5DR473MCAPACER.50V +2O%O.O47iF5.00 C10217-5DR473MDO O.047iF5.00 C10317-5DR473MDO O.O47jiF5.00 C
18、104 .17-50R103MDO 0.01jiF3.40 cbs17-5DR1O3M DO 0.01pF3.40 C106175DR473MDO O.047iF5.00 C10717-5DR473MDO 0.O47iF5.00 C10817-5DR473MDO O.O47pF5.00 c10917-5DR473MDO O.O47iF5.00 cilo17-5DR331MDO 330P4.00 clii17-2.5ER1O5YCAPAEL. 25V+7510%1iF8.00 Cl 1217-5DR473MCAPACER. 50V+2O%O.O47iF5.00 C11317-2.5ER1O5Y
19、CAPACER.25V+7510%1iF8.00 Cl1417-5DR473MCAPA CER.SOy+2O%O.O47iF5.00 c11517-5DR473M DOO.O47jiF5.00 C11617-1.6E227Y CAPACER.16V+5010%22OiF33.50 Cl1717-5DR473M CAPACER.50V+2O%0.O47iF5.00 C11817-2.5ER1O5YCAPA EL.25V+7510%1uF5.00 Cl1917-5DR473MCAPACER.50V +20%0.O47jiF ,5.00 C12017-5DR473MDO 0.O47iF5.00 C1
20、2117-5DR473MDO O.O47jiF5.00 C12217-2.5ER475YCAPAEL.25V +7510%4.7iF8.00 C12317-5DR1O2MCAPA CER.50V+2O%1000PF4.00 C12417-1.6ER1O7YCAPA EL.16V+5010% 1OOiF 14.00 C12517-5DR473MCAPACER. SOy+2O%0.O47iF 5.00 C12717-2.5ER475YCAPA EL.25V+7510%4.7iF8.00 C20117-160R224MCAPA TA.16V+-.-2O%0.22jiF16.40 C20217-5FR
21、473CAPAMY.50V +5%O.O47jiF8.90 C20317-2.5ER475MCAPA EL.25V+7510%4.7iF8.00 C20417-5U471J CAPASTY.SOy +_5% 47OPF9.60 C20517-1.60R224MCAPA TA.16V+2O%0.24tF 16.40 C20617-1.60R474MDO O.47pF16.40 C20717-1.6E227YCAPA EL.16V+5010%22O.LF 33.50 C208,C20917-5U821JCAPA STY.50V+5%820PF 9.60 C210,C21117-5FR562JCAP
22、A MY.SOy+5%O.OO56iF6.50 C212,C21317-5FR123JDO O.O12iF .8.90 C214,C215 17-5U821JCAPASTY.50V+5%820P 9.60 C216,C217 17-5FR682J CAPAMY.50V+5% 0.OO68iF6.50 C218,C219 17-2.5ER475Y CAPAEL.25V+7510%4.7jiF 8.00 C220,C22117-1.6ER1O7Y .CAPAEL.16V+5010% 1OOuF14.00 C222,C22317-1.6ER1O6Y DO lOjiF8.00 C22417-1.OS1
23、O7Y CAPAELNPby +5010%1OOiF14.00 C22517-5ER1O5Y CAPAEL.25V+7510%4.7iF 8.00 C226,C22717-2.5ER475Y DO4.7iF 8.00 C30117-5DR15ODSL CAPACER.SOy+O.25P 15PF3.50 C C C SYMBOLNO.PARTSNO. DESCRIPTIONREF. C30217-5U361J CAPASTY.50V+5%360PF 9.40 C30317-5DR1O3M CAPACER50V+20%O.OljiF 3.40 C30417-5DR1O3M DOO.O1iF3.4
24、0 C30517-5DR1O2M DO1000PF4.00 C30717-5DR1O3M DOO.01pF3.40 C308: 17-5DR103M DO0.O1iF3.40 C309 17-5DR473M DOO.O47jiF5.00 C31017-1.6ER1O7Y CAPAEL.16V+5010%lOOiiF 14.00 C31117-5DR1O2M CAPACER.SOy+20%1000PF 4.00 C31217-2.5ER475Y CAPAEL.25V+7510%4.7xF 8.00 C31317-5DR1O3M CAPACER.50V20%O.01iF 3.40 C31417-1
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