Nad-300-Service-Manual(1) 电路图 维修手册.pdf

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1、$tRUIET lllrilufll ,Z-ftCC STEREO RECEIVER /t.tJ?.: xrr,; aj , .i1!, ,?:i !r.:n! 1r :rLr!qi*rnt4r trtt r-;.$SS.$S *!* #,* ,Y. mm$Smp q; w_ I tr*irlilJ .- RadioFans.CN 收音机爱 好者资料库 CONTENTS 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. SPECIFICATIONS DISASSEMB LY I NSTRUCTI

2、 ONS 7 DIAL STRINGING DETAIL ALIGNMENT AND CHECK POINTS ALIGNMENTPROCEDURES .9- CHANGING POWER LINE VOLTAGES TROUBLESHOOTI NG TUNER FRONT-END OO36TUNERBOARD .2O 5027 PRE-AMPLIFIER BOARD .,. 21 6038 MAIN AMPLIFIER BOARD 7105 SWITCH BOARD 7110 DOLBY NR BOARD 7118 DOLBY FM CALIBRATION BOARD BO25 POWER

3、SUPPLY BOARD . 25 9025 TONE AMPLIFIEB BOARD . 26 ELECTRICAL PARTS LIST 27 - 36 M ISCE LLAN EOUS PARTS LIST PAGE 3- 6 7 I 12 13 18 19 22 23 24 25 37 38 39 BLOCK DIAGRAM INTERNAL VIEW OF INTEGRATED CIRCUIT SCHEMATIC DIAGRAMSEPARATE SHEET 2 RadioFans.CN 收音机爱 好者资料库 1. SPECIFICATIONS 4. 5. 6. A. FM SECTI

4、ON 1. FM Tuning Range *Adjustment for tuning prohibited below 87.5 MHz in West Germany 2. Dial Calibration Accuracy90 3 3B 2. Output vs lnput at PLAY Position at 5 kHz, 0 dB=30 mV lnput Level 0 dB -20 dB -30 dB 3. Frequency Response of DOLBY FM lnput=3O mV5 kHz 10 kHz 0.035 240 t10 t10 -5 -3 o.o2 1

5、70 80 70 63 85 85 90 +8 +5 0 -15.7 -21.5 -31.1 0 -26.7 -40.3 +3 +5 0.08 200 t1Ot2 !1O!2 1.5 t2 t2 +8t2 +5t2 0.1 1!O.2 t2 -15.7t2 -21.5t2 -31.1t2 t2 -26.7!2 -40.3x2 +31 1 +5r 1 50 60 50 58 75 75 85 mV dB dB dB dB dB dB dB dB dB dB dB dB dB dB o/ /o V dB dB dB dB dB dB dB dB dB LIMITNOMINAL F. GENERAL

6、 1. Power Requirements 22OVAC,50 Hz (12O,24O VAC,50 Hz) 2. Dimensions 508(W) x 400(D) x 145(H) mm 3. Weisht 22 Ks. 1) 2l 2. DISASSEMBLY INSTRUCTIONS Removing the metal enclosure from chassis. (Refer to Figure A) Remove seven screws from top of the enclosure and four screws from both sides of the en-

7、 closure, then pull off the enclosure f rom the chassis. Removing the Front Panel. (Refer to Figure A) a) Pull off all the control knobs except for PLAY CAL and REC LEVEL. b) Remove three nuts from SELECTOR, SPEAKERS and DOLBY NR controls. c) Remove three screws from top of the Front Panel and remov

8、e Front Panel. Note: Numbers shown in circles correspond to Miscellaneous Parts List on Page 37. Figure A -V)PIJLLEY DIAL DRUM (2 TURNS) 6l) Y6;) l/e t/r i / 3. DIAL STRINGING DETAIL . PULLEY Note: Tuning capacitor should be fully closed position !D Er q.P9 , I r 4.ALIGNMENT AND CHECK POINTS N o r E

9、. _o o F E. (o O F E. O CD E. o Cl F (U ca O co E. , c) ,8. * I ei r.l a) C) ff. .,/ *( f 0 _o O (o E. _o N O. (0 E. O. J r O E. LO JO l LL O c) F F o-r I I F F F FF F (gO Nr OO (o (o EE 5. ALIGNMENT PROCEDURES Do not attempt alignment unless the following equipment is available. EOUIPMENT DESCRIPTI

10、ON 1. AM Signal Generator 5. Stereo Modulator 9. Frequency Counter 2. Oscilloscope 3. AC Voltmeter 6. Audio Generator 7. Distortion meter 4. FM Signal Generator 8. DC Voltmeter AM IF o=ffi (,-F= E;=,T* AAA=ryA66S1.= Gffil3iJffiilllJi:l Q=v$:9gp ;-,+A 6110= 6ffi t=lft*?e e :4# ffiEHs/ q norrrrn p .#

11、/ c807 ( ?./ ,* Tia08 rst35 r-T-r i-uulF / caor I ron5fl l */ -fll-.-, 1l= 4,( #,1, tr rRBBS rxnl18 ,# rr-fi-)=r -qJryu -r*+illl,_F ty,.J ,Ti:ffi, -/-soi,o- _-l 17 oo = .-II 85,-P 4 I 1306Y I rx30 , lscgs r.1 ! FB /60, (T, I.1r1-P ffi, ncTJ-r q.ry-,P / tol 13r6Y / Rp,/ f - I cl R8ilrrl50 F l.J_-rJ /

12、a /n (Q:,|!r11,sl| 25 16. 9025 TONE AMPLIFIER BOARD 1 /#- e t- -/ ,. rrffillG,flu,) -HM .E.Br( 3-l .-: co4r luoso ) ffit3Lv 90 33P 0.01p o;9ou 220P 1p 3.3p o,0u 0.01p 0.04p 0.04rr 47p 22p 0.047p 0.22p 0.47 p 1 500P 560P 0.33p 480p 1 5000P 1p lop 0.47 p 4.7 p 4.7 p 1 00P 25 50 25 50 25 50 , 25 25 25

13、6.3 16 50 16 50 16 50 25 Ceramic Electrolytic Ceramic Electrolytic *,i, Ceramic Ceramic Electrolytic Electrolytic Polyester Electrolytic Polystyrene Ceramic Electrolytic Electrolytic Polyester Electrolytic Electrolytic 27 Ref. No.Value (F)Voltage (V)MaterialRef. No.Value (F)Voltage (V) Material C606

14、a,b C607a,b C608a,b C609a,b C6 1 0a,b C61 1 a,b C612a,b C70l a,b C702a,b C703a,b C704a,b C705a,b C706a,b C707a,b C708a,b C709a,b C71 0a,b C71 1a,b C712a,b C713a,b C714a,b C7 1 5a,b C7 1 6a,b C717 a,b c71 8 c719 c720 c721 c722 c723 C751a,b C752a,b C753a,b C754a,b C755a,b C756a,b C757a,b C758a,b C759a

15、,b C791a,b C792a,b C793a,b C794a,b c795 c796 CBOl c802 cB03 19,0P 0.001p Not Used 0.047 rt 5P lop 5600P 0.47 p 1op 0.0047p lop 4700P 0.027 p 10rr 1 800P 0.047 p 11t o.1p 0.33p 220p 22p Not Used 4.7 p 0.,9, Not Used 0.47 p 22p 11t 0.047 p o.1p 2200P 1 000P 4.1p 220P 0.047 p 0.47 p 2700P ,1, 19,0, 33r

16、r 0.47 p 330p 500 50 50 25 50 50 25 25 16 q9 16 q9 50 1t 10 25 25 50 50 6.3 50 25 50 50 35 16 50 6 Ceramic t: Ceramic Electrolytic Polyester Ele,ctrolytic Ceramic Electrolytic Polyester Electrolytic Polyester Electrolytic Tantalume Electrolytic Electrolytic Polyester Electrolytic Electrolytic Polyes

17、ter ,:, Electrolytic Ceramic Polyester Electrolytic Polyester Electrolytic t, ,1 Electrolytic C901 a,b C902a,b C903a,b C904a,b C905a,b C906a,b C907a,b C908a,b C909a,b C910a,b c91 1 cB04 CBOS c806 c807 c808 c809 cB 10 c81 1 c812 c813 cB14 c83 1 c832 c833 c834 c835 c85 1 c852 0.056ll 1 00p 1op 820P 22

18、0p 1op 330p 1 00p 820P 220p 0.001p 1 000p 2?9u 1 8000p 2.2p Not Used 2.2p 1 200P 0.033rr 1p 10P 22p 4.7 p 220p 50 1? 35 25 25 50 25 35 5qg 25 16 63 50 50 50 50 6.3 25 Polyester Electrolytic Ceramic Electrolytic Ceramic Electrolytic Ceramic Electrolytic Electrolytic Electrolytic Electrolytic Polyeste

19、r Electrolytic Ceramic Electrolytic CERAMIC FILTERS Ref. No.DescriptionMfrs Part No. cF201 cF202 cF203 cF204 cF401 SFE 10.7 MA8 SF L_455A 3530001 2 3530001 6 28 DIODES Ref. No.Type No. Manufactu rerMfrs Part No. D201 D202 D203 D204 D205 0206 D207 D208 D301 D302 0303 D304 0401 D601a,b D602a,b D603a,b

20、 D604a,b D605a,b I D701a,b I ozoza,r I D703a,b I o,o, I neoz I osos I oso+ I oaos I osoo I osoz I osos I 0, I ossz I oees rTT410 1 N6()P 1 S2473 1 N6OP 1 52473 1 N6()P R D6,2 E 1 S2473 STV.3H 1 N60 1 S2473 SR.1 K2 RD.l8E s51 51 B s51 51 SR,.1K2 SR.1K2 RDl3E UNISON ,:, Toyo Electronics UNISON Toyo El

21、ectronics UNISON NEC Toyo Electronics Sanken UNISON , Toyo Electronics UNISON NEC Toshiba UNISON UNISON NEC 3060001 1 3060041 0 3060001 1 3060041 0 3060001 1 3060069 1 306004 1 0 3060088 1 3060001 0 3060041 0 30600540 30600630 30600902 30600901 30600540 30600540 30600332 29 INTEGRATED CIRCUITS l- -.

22、- -r- Ref. No. Type No. Manufacturer Mfrs Part No. 30900340 309003 1 0 30900360 30900350 30900330 I substitute - Tvpe No. Ma.ufactr.tter r c201 tc202 r c203 r c301 r c302 I C401 lC701a,b LA1222Sanyo 1A3350 R C4558 D N pPC30C N E545B Sanyo JRC NEC SIGNETICS RELAYS Ref. No.DescriptionMfrs Part No. K1a

23、,b K2a,b A Speakers Protection Relay B Speakers Protection Relay 82000040 82000040 COILS L201 L202 1203 130 1 1401 1451 160 1 a,b L70 1 a,b lnductor LT-8330M lnductor 144HY-102K 0SC Coil415L AM Bar Antenna Coil Choke Coil lnductor 1 1mH Mfrs Part No. 35500090 355001 50 35504 1 56 35400441 355001 70

24、35500270 Description FILTERS I Ref. No. I I I Description Mfrs Part No. L F301 a,bL.P.F. 190BLR-31 54-N i 35000040 30 METERS Ref. No.DescriptionMfrs Part M1 M2 SIGNAL Meter 200pA TUNING Meter t100pA 6020001 6 60100017 RESISTORS Ref. No.Value (F)Voltage (V)Material Ref. No.Value (ohm)Wattage (W) Mate

25、rial R30g R31 0 R31 1 R31 2 R31 3a,b R314a,b R315 R316a,b R3l7a,b R318a,b R319a,b R320a,b R321 a,b R322a,b R323a,b R324a,b R325a,b R326a,b R327a,b R328a,b R329a,b R330a,b R33 1 R332 R333 H334 R335 8336 R337 R338 8339 R340 R34t R342 R343 R344 R345 R346 R347 R348 R349 68K 120 10K 47K 39K 100 K 180 K 1

26、K 68K 10K 1 00K 750 10K 3.9 K 4,7* 100 K 3.3K 22K 68K 220K 100 K 100 56K 10K 220K 2tK 10K 22K 1 00K 1K t,?* 33 47K 1;3K 4.7K 15K 22K 1/ /4 Carbon R201 R202 R203 R204 R205 R206 R207 R208 R209 R21 0 R211 R212 R21 3 R214 R21 5 R21 6 R21l R21 8 R21 I R220 R221 R222 R223 R224 R225 R226 R227 R228 R229 R23

27、0 R301 R302a,b R303 R304 R305 R306 R307 R308 1.5K 3.9 K 430 39K 2.2M 24K 47 560 47 1.BK 430 47 1K 10K 47 1K 560 150 1K ioo 100 220K 82K 43K 3.3 K 110 10K 3.3 K 6.8K 1.8K 68K 6.BK 8.2 K 3.3 K % /4 Carbo n Carbon 31 Ref. No.Value (ohm)Wattage (W) Material Ref. No.Value (ohm)Wattage (W) Material R350 R

28、35 1 R352 8353 R354 R401 R402 R403 R404 R405 R406 R407 H408 R409 R410 R41 1 8501 a,b R502a,b R 503a,b R504a,b R505a,b R506a,b R507a,b R508a,b R509a,b R51 Oa,b R51 1a,b R512a,b R513a,b R514a,b R515a,b R516a,b R5l 7a,b R518a,b R519a,b R551a,b R591a,b R592a,b R601a,b R602a,b R603a,b R604a,b R605a,b R60

29、6a,b R607a,b 33K 82K 27K 10K 5.6K 33K 82K 3.9K 1.8K 2.2K 68K 47K 10K 560 10K 220 100K 3.3K 100K 16K 560K 1.2K 806K 10K Not Used 6.8K 10K 2,?0K 120 K 1.6 K 68K 9;6K 5.6 K 110K 3.3 K 1 00K Not Used 3K 10K 470 r.8K % l+ 1/, 1/ 1/ % Y ,/ 1/o Y Carbon Carbon Carbon Metal Carbon Carbon Metal Carbon Carbon

30、 Carbon Carbon R60Ba,b R609a,b B610a,b R61 1a,b R612a,b R613a,b R614a,b R615a,b R616a,b R617a,b R618a,b R619a,b R620a,b R621a,b R622a,b R623a,b R624a,b R625a,b R626a,b R627a,b R628a,b R629a,b R630a,b R631a,b R632a,b R633a,b R651 R652 R701 a,b R702a,b R703a,b R704a,b R705a,b R706a,b R707a,b R708a,b R

31、709a,b R71 0a,b R71 1a,b R712a,b R7 13a,b R714a,b R71 5 R71 6 R7 17 R718 R719 R720 10K 4.3K 1.2K 150 43K 220 100 Not Used 10 1l 10 2.2K 190 8:,7,0 0.82 ,: , 3 27 470 470 5 llvr 180 47K 3.3 K 2.2K 270K 150K 680K 120 r 00K 10K 2tK 3.9 K 1.8 K 68K 20K 22K % % 1/q % 5 2 1/+ 2 10 Tq Metal 0 xide Carbon C

32、arbon Carbon Wire Wound Metal Carbon Metal 0 xide Wire Wound Carbon , 32 Ref, No.Value (ohm)Wattage (W)Material Ref. No.Value (ohm)Wattaqe (W)Material R721 R722 R723a,b R751a,b R752a,b R753a,b R754a,b R755a,b R756a,b R757a,b R758a,b R759a,b R760a,b R761a,b R762a,b R763a,b B764a,b R765a,b R791a,b R79

33、2a,b R793a,b R794a,b R795a,b R7g6 - R7g7 RB()l R802 R803 RB04 R805 R806 RBOT RBOB R809 R810 R81 1 R81 2 R813 R8t4 R81 5 R816 R81 7 R81 I 8819 RB2t) R82t R822 18K 39K 2.2K 470K 240K 18K 2.zti 3.3 K 1 00K 3.3K 2.2K 18K Not Used 12K 220K 3.3K 10K 18K 16K 1I q9* B.2K 10K 1 00K 10K 1 00K 820K 470 K r 50K

34、 150 4,;7K 10K 12K 15K 47K 390 5.6K 620 1K 4.7K % /4 1 % 2 1/ 1 1t Carbon Carbon Carbon Carbo n Carbon Metal Oxide Carbo n Metal 0 xide Carbon Metal 0 xide Carbon R823 R824 R851 R831 R832 R833 R834 R835 R901a,b R902a,b R903a,b R904a,b R905a,b R906a,b R907a,b R908a,b R909a,b R9l0a,b R911a,b R91 2a,b

35、RS I 3a,b R9 14a,b R91 Sa,b R9l 6a,b R917a,b R91 Ba,b R91 9a,b R920a,b Rg2 1 4.7K 43K 33 47 2.2K t0 1.BK 270 3.3 K +,7,0K 100K 470 15K 4.3K 9;o Not Used ,90 470 K 15K 1 00K 1.5K 9;8K 330K 1K lo 1 1 7a /4 Carb on Carbon Metal 0 xide Carbon Metal 0 xide Carbon Carbcn 33 SWITCHESTRANSFORMERS Ref. No.De

36、scription Mfrs Part No.Ref. No.DescriptionMfrs Part No. S1 S2 S3 54 S5 s6 S7 SB S9 sl0 sl1 sl2 sl3 sl4 S15a,b s16 s17 SELECTO R TAPE MONITO R TAPE DUBBING DOLBY NR LOUDNESS MONO SUBSONIC FILTER HIGH FILTER D0LBY NR 400H2 T0NE HIGH BLEND DOLBY NR METER MUTING NO RMAL_SEPARATED POWER ESB-791 THERMAL P

37、ROTECTOR THERMAL PROTECTOR (lnside of Power Transformer) SPEAKERS 21100126 27600024 27600025 27100127 27200078 21200079 27200078 27200019 27200078 27300008 21200077 307001 70 21100125 T201 T401 T85 1 IFT 216D RF Coil 122B Power Transformer 35702164 35501222 35900 1 97 TRANSISTORS Ref. No.Type No.Man

38、ufacturerMfrs Part No. Su bstitute Type No.Manufacturer TR1 O1 TR 102 TR 103 TR301a,b TR302a,b TR303a,b TR304 TR3O5 T R306 TR3O7 TR3O8 TR309 TR31 t) TR31 1 TR4Ol TR4O2 TR501a,b TR502a,b TR503a,b TR504a,b 3SK45 3SK45 sE3001 2SC945 25C1222 2SA640 2SC945 2SA733 2SC945 ,:, 2SCg45 2SA841 25C1 681 2SAB41

39、Hitachi Teledyne NEC NEC Toshiba 3020 1 03 1 30200662 30000241 3020 1 03 1 30000423 30201 031 30201 031 30000442 30201 133 30000442 35K59 3SK59 25C1342 2SC536 2SC1681 2SA841 2SC536 2SA67B 2SC536 2SC536 2SA640 2SC 1400 2SA750 Toshiba Hitach i Sanyo Toshiba Sanyo Sony Sanyo ,:, Sanyo NEC 34 TRANSISTOR

40、S Ref. No.Type No.Manufactu rerMfrs Part No. Substitute Type No.Manufactu rer T R601a,b TR602a,b TR603a,b TR604a,b TR605a,b TR606a,b TR607a,b TR608a,b TR609a,b TB610a,b TR61 1a,b T R6 1 2a,b TR613a,b T R701a,b rw02 TR751a,l: TR752a,b TR791a,b TRBOl T RBO2 T R803 TR8O4 TRBOs TBBO6 T RBOT TRSOB T BS()

41、g TR81() TRBl 1 TRB31 T R832 TR901a,b TR902a,b T R903a,b T H904a,b 2SC 1400 2SC1681GR 2SA914 2SC 1 953 2SC945 2SA733 25C143 1 2S4762 25D,427 2S8557 2SCg45 25C1 68 1 2SA841 2SC1681 BL 2SC1400 2SA750 2SC945 L 2SC 1400 2SD43B 25C 1 983 25C945 L 2SC 1 983 2S8560 2SA733 25C 1 983 2SA733 25C1 681 2SA841 2

42、5C1681 2SA841 NE,9 Toshiba Matsushita N E-C sor,v :lo * r,9 Toshi ba Toshiba *Ef ,r;. Sanken NEC San ken Sanyo NEC San ken NEC Toshiba 30201 191 3020 1 1 33 3000046 1 30201 1 81 3020 1 03 1 30000423 30201201 30000481 30300270 30r0006 1 3020 1 03 1 3020 1 1 33 30000443 30201132 30201 191 3000047 1 30

43、20 1 03 1 30201 191 30300250 30201211 3020 1 03 1 30201211 30 1 0004 1 30000423 30201211 30000423 3020 1 1 33 30000443 30201 133 30000443 25C1 681 25C1400 2SA81 I 25C 1 628 2SC536 2S4678 2SC1 1 61 254653 2SD388A(2) 2SB541A 25C536 2SC1 400 2SA750 25C 1 400 25C1681 2SAB41 2SC536 2SC1681 25C1 509 25D33

44、0 2S C536 2SD330 25A771 2SA67B 2S0330 2SA678 2SC1400 2SA750 2SC1400 2SA750 Toshiba NEC Toshiba Sanyo Sony -i Sanyo N E,9 NEC Toshiba bany0 Toshiba Matsushita l Matsushita Sony Sa nyo Sony NEC 35 VARIABLE RESISTORS Ref. No.DescriptionMfrs Part No. VR2()1 VR3()1 V R302 VR303a,b V R4()1 VR4O2 V R551a,b

45、,c,d V R601a,b V R602a,b V R701a,b VR7O2 V R791a,b V R792a,b V R793a,b V B901a,b V R902a,b FM Meter Level4T Ko/B PLL VCO 4.7 KO/B FM Muting Level 20 Ko/B FM Separation 47 Ko/B AM Meter Level4.7 Ko/B AM 0utput Level4.7 KO/B VOLUME =-a;=- r; = = wf l/tt-L_ U:j l i =0,-YJ)/ EI + L +- i f -.9,=E I )= I

46、ffi I -t l r-l f = =! ri t+ ; i 38 20.INTERNAL VIEW OF INTEGRATED CIRCUIT RC4558Dll-F /lPC30C DOTBY B.TYPt IIIEGRAIED CIRCUIT slGlrEilcs ilt5458 39 PREAMP BLOCKV.C.O, BLOCK / 90 F.D.3 rA33so il1_ _.1 SWITCHING BLOCK tr- -ro P.C. or DC A. BLOCK LAMP DRIVE BLOCK W :ffi o o cf) CO J o H ffi. L ) o o O

47、O 6 6 a a = O G lJl E c) lJ-.| G, o oo (f, tJ.J rG, O u-tU =:ffi. tx y4qz 18 l,# I 4q = = = a : -6-= e=e e F5-E Nd hi) I mr Bdl | , 59 = = E=, -t EA J I I t* IL R. r00 E),_ .1 F J-rB-l E r, t/r lnur* fr, - El I * := +xx !a R= = = G, (5 EI = = lJl CJ c./, gI llaE iI lL* l*, : il -el -E Ei I =r -*-l :

48、 LD- I l r;1 I tt_. rFT. il ci l: E= a, -t -r I IlR t- IL Ee! B- :l iEi it !,i ! l-s;t Jiffi -1lsafJs, l!*= II = 2 iia t_4 l= iE U_ Ag t, ll l0ll ;# r01 - o00E tixu-t /V! ua ) h l1+* /o o_o i-NEEE. - soru (Asz) I !rt ll0 lrN =rF= lasr oa I rrrl l+ - - = i3 lIHilIY frJ = G, C5 Et CJ = u-l C) c/) EJ o

49、6 ;o o- o: =EE 96= =ql -= ?6 g G =GC EE- o .: ai .=a: E = E A6 c-E6o EP- - EE - 6 - -: E J 3qE#?E- d= -=rF3=f, :o- =lE .=EF S - ! - :tE 9:a;89 EO60Ya-6 ! = 9- .b rr H ; E oiYd-o e!ov!r :Ng i; z U ffi 9 = A!l o a e O I o 6 n a = O r4 1ig , EI =i Ei I -;-=-=d =- E F !, ti .fi A - !r- xJ JI V (= b)H Kr/ E 5t ,rLn) : .- -YrP, -11 -la/ rll Yf . ll- *r) ll -ld zz ! It Bi t I L lE -l= i: :e - E = I c9: -