Pioneer-SX4-rec-sm维修电路原理图.pdf

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1、c)ProNEEr 2 4 6 I I 8. 9. 10. ORDER NO. ARP-O15-O COMPUTER CONTROLLED STEREO RECEIVER s)(- MODEL SX.4 COMES IN FOUR VERSIONS DISTINGUISHED AS FOLLOWS: r This service manual is applicable to the KU type. o For the circuit description, please refer to the model SX-7 service manual ARP-047-0). r Ce man

2、uel dinstuction se refdre au mode de r6glage, en frangais. o Este manual de servicio trata del m6todo de ajuste escrito en espafrol. 1. 2. 3. o. 13 17 21 23 za 27 CONTENTS SPECIFICATIONS F RONT PANE L FACILITIES PARTS LOCATION 4. PACKING BLOCK DIAGRAI4 P.C.BOARDS CONNECTION DIAGRAM PIoNEEFIELECTFICI

3、NICCG,F|PCTF|AI|CTN r-chome.M6su.o-ku.r (,.a. FE N-ll aLaCtFCtNlce CC,FIPCAATICN 85 Oxro.ct O.ve. Moona.he, New Je.sey O2O74. u s a PE illla tl.-CtFCtNlC IEUFCPE, N.V. Lu.haAe.-Haven 9.2O3o FlCrialCF lLaCTElCNlCa AUaIFIALIA F Y. LYo. 1 7E I A4 Aolnda.y Rodd, B.aesde FHOTULY 1981 Printed in japan SCH

4、EMATIC DIAGRAM ELECTR ICAL PABTS LIST . EXPLODED VIEW ADJUSTMENTS nEcuce AJUSTE TypeVoltagRemarks KUAC 12OV onlyU.S.A. model sAC 110V, 120V,220V and 24OV (Switchable)General export model KCAC 12OV only Canada model YPAC 240V onlyAustralia model RadioFans.CN 收音机爱好者资料库 1. SPECIFICATIONS Amplifier Sec

5、tion Continuous Average Power 0utput is 20 watts* per channel, min., at 8 ohms from 20 Hertz to 20,000 Hertz with no more than 0.04% total harmonic distortion. Total Harmonic Distortion (20 Hertz to 20,000 Hertz, 8 ohms, from AUX/VIDEO) continuous rated power output . . No more than 0.04% 10 watts p

6、er channel power output . . No more than 0.04% f ntermodulation Distortion (50 Hertz: 7,000 Hertz = 4 : 1, 8 ohms, from AUX/VIDEO) continuous rated power output . . No more than 0.04% Damping Factor l2O Hertz to 20,000 Hertz, 8 ohms) 50 I n put (Sensitivity/l mpedance) PHONO .2.5mYlb0kitohms AUX/VID

7、EO TAPE PLAY 150mV/50 kitohms Phono Overload Level (T.H.D. O.1/o, 1,000H2) PHONO 130mV Output ( Level/l mpedance) TAPE REC .15OmVl2.2 kitohms Frequency Response PHONO (R IAA Equalization) . . . . 30Hzto 15.000H2t0.5d8 AUX/VIDEO. TAPE PLAY ronrconiro; 10H2 to 50000H21! uoe BASS. .t8dB(100H2) TREBLE .

8、 .18d8 (tOkHz) :lY: : *:l: : i?:Jil$Tl, Hum and Noise (lHF, short circuited A network) PHONO 70dB AUX/VIDEO,TAPEPLAY. .96d8 FM Tuner Section Usable Sensitivity . Mono; 11.2d8f (lHF) (1.OpV,75 ohms) 50dB Ouieting Sensitivity Mono; 16.3dBf (1 .8pV, 75 ohms) Stereo; 37.2dBI (19.9pV, 75 ohms) Signal-to-

9、Noise Ratio Mono; 75dB (at 85dBf ) Stereo;70d8 (at 85dBf) Distortion (at 65dBf) Mono. .100H2;0.15% 1 kHz; 0.1 5% 6kHz;O.2% Stereo .100H2;0.3% l kHz; 0.3% 6kHz; O.4o/o CaptureRatio. .1.0d8 Alternate Channel Selectivity 400kHz; 60dB StereoSeparation .1kH2;40d8 30Hz to l5kHz; 35dB Frequency Response 20

10、Hz to 15kHz +0.5d8, -1dB SpuriousResponseRatio. .65d8 lmageResponseRatio .65d8 lFResponseRatio, .90d8 AM Suppression Ratio . 55dB SubcarrierProductRatio. .40d8 SCA Rejection ratio . . 60dB Muting Threshold 29.3dBf (8pV) Antenna Input . . 300 ohms balanced, 75 ohms unbalanced AM Tuner Section Sensiti

11、vity lHF, ferrite antenna . . 300pV/m lHF, external antenna 15gV Selectivity .27d8 Signal-to-Noise Ratio . 50dB lmageResponseRatio .40d8 lFResponseRatio. .73d8 Antenna Built-in ferrite loopstick antenna Miscellaneous Power Requirements AC 120V.60Hz Power Consumption . . .200W (UL) Dimensions . 420(W

12、) x 98(H) x 311(D) mm 16-9/16(W) x 3-718(H) x 12-114(Dl in Weight (without package) 5.2 kg (1 1 lb 7 ozl Furnished Parts FM T-type Antenna 1 DryBatterysuM-3AA . .2 Operatinglnstructions ,.1 *Measured pursuant to the federal Trade Commissions Trade Regulation rule on Power Output Claims for Amplif ie

13、r. NOTE: Specifications and design subiect to possibte modification without notice. RadioFans.CN 收音机爱好者资料库 SETTING USE THE AM CHANNEL STEP SWITCH (on the rear panel) Before the receiver leaves the manufacturing plant, this switch is set to the channel allotment olan of the destina- tion. For the U.

14、S.A., it is set to 1OkHz. Check that the switch is set properly before use. Set it to the 9kHz position when the channel allotment plan is changed and the intervals between the AM broad- casting stations change from 1OkHz to 9kHz units. NOTE: Contact your dealer and inquire if you are not sure about

15、 the c han nel al I otment pla n. LOADING THE BATTERIES Two size AA dry batteries are provided as accessories. They are used to retain the station presetting memory functions. Before using the unit, disconnect the power cord and load the batteries into the compartment on the rear panel as follows: 1

16、. Slide the lid in the direction of the arrow and open the compartment (see Fig. 1). Load the batteries with the polarities properly aligned with the marks on the inside of the compartment (see Fis.2). Align the tab of the lid with the interlocking hole and depress the lid lightly. Battery Precautio

17、ns: lf batteries are incorrectly used. they may leak or even break open inside the battery holder. Observe the following precautions when inserting and replacing the batteries. 1. Always be sure the + and - ends are aligned properly as shown above and as marked on the battery holder. 2. Do not use n

18、ew batteries and partly used batteries at the same time. 3. Do not use different brands and types of batteries at the same time. niT-trn .r.J Lorr. 10kHz position Fig.2 Insert tab into interlocking hole Fis. 3 Fis.4 There are rechargeable dry cell batteries and non- rechargeable dry cell batteries.

19、Always read the notes on the battery to be sure which kind you have. When replacing the batteries, always use the same type of batteries (carbon zinc) as the ones originally provided with the receiver. Do not use alkaline and nickel cad- mium type batteires. 2. 3. 4. 5. RadioFans.CN 收音机爱好者资料库 2. FR

20、ONT PANEL FACILITIES o powen swlrcH Power is supplied to the unit when this switch is depressed (in position). FM STEREo INDIcAToR This lights when receiving an FM stereo program. TU INDICATOR This lights when receiving the FM broadcasts. (This lights when depressed the FM switch). nru rNDrcAToR Thi

21、s lights when receiving the AM broadcasts. FREOUENcY scALE This scale is composed of 16light-emitting diodes (LEDs). During frequency scanning, the lighting moves from left to right or vice versa, depending on the direction corres- ponding to the TUNING SWITCH which has been de- pressed. rurueo rNDr

22、cAToR This lights when the optimum tuning point has been located during reception. lt blinks when stations are being searched. TUNING switch This is used to tune in broadcasting stations. When de- pressed, the LEDs on the frequency scale light up in the leftward or rightward direction, depending on

23、the direc- tion corresponding to the part of the TUNING switch which has been depressed. and frequency scanning starts. The TUNED indicator now starts to blink. When a station is located. the LEDs stop moving and the TUNED indicator lights up. The sound from the station can be heard in about 5 sec-

24、onds. After that sound has been heard for these few sec- onds, the frequency scanning operation starts again. In this way, all the broadcasting stations are picked up in succession. NOTE: The sound of each station is heard for about 5 seconds but de- press the TUNING switch if this is not the requir

25、ed station or if you want to search the next station promptly. FM swrrcH Depress this switch for FM reception. nm swtrcH Depress this switch for AM reception. RadioFans.CN 收音机爱好者资料库 3. PARTS LOCATION Front Panel View Display cover ANR454 Top cover ANE.362 Front panel assembly - ANM075 Knob (POWER )

26、 -5 AAD.406 Knob (BASS,TREBLE,BALANCE) AAB.274 Front View with Panel Removed AEL.379 NO?Sr o The ! marh found on some component patts indicates the importance of the 6ofet! factor of the part. Therefore, when rcplscing, be sure to u8e ports of identical designation, o For your Parts Stoch Contrcl, t

27、he faet mouing items ore indicdted uith the marhs * qnd * * GENERALLY MOVES FASTER THAN , Thia clossification eholl be odiusted b! each dietibutor because it depend, on model number, te mp eroture, humidity, e tc. Knob TUNING) AAD.4OO Knob (FMl AAD4O2 Knob (AMl AAD403 Knob (VOLUME) AAB.273 Knob (INP

28、UT) AAD.399 A r * Push switch (POWER ASG-521 Knob (TAPE/ADPT. MONO, LOUDNESSI AAD-405 Knob (MEMORY/STOP) AAD4O4 Variable resistor (VOLUMEI ACT-128 I * 3anged push switch (TAPE/ADPT. MONO, LOUDNESS ASG301 *t Tact switch ASG-177 Control assembly GWX-721 Phones jack PHONES AKN-029 Variable resistor ( A

29、CT-140 Variable resistor (TREBLE) ACT-140 Variable resistor ACT-o23 RadioFans.CN 收音机爱好者资料库 4. PACKING No. Part No.De.cription 1. AHA-294 2. ARB439 3. ADHOo4 4. AHD-961 Side pad Operating instructions T-type FM ntenna Packing case s*613 Rear Panel View * t Slide switch (AM CHANNEL STEPI ASH-O15 rerm

30、inal (AM STEREO OUTI AKB76 Terminel (PHONO, AUX/VtDEO,R ECI AKB-079 Terminal (PLAYI AKB77 Top View , AC socker (AC OUTLETSI AKP-039 Strain reliet AEC-358 AC power cord ADG.O52 Terminal SPEAKERS) AKE.lOI ti *Fuse (5A) AEK-1OA Power transformr ATT39 .! *r Fuse (3Al AEKI Ol RadioFans.CN 收音机爱好者资料库 5. B

31、LOCK DIAGRAM FM FRONT END FM IF AMP A DETECTORFM MPX STEREO DEMODULATOR MPx STEREo L.P,F / AF AAP DECODER IC L-ouT 300n F M F GNO ! IF AUP A OETECTOR IC I oerecro a SIGNAL IIETER Io TUNING OETECTOR 3 E. XTAL IC P06004 R7 Voo R 8 R 9 Rto RESET R t l K O K I X 2 K 3 . I R Q P O Oo or vurE l,-o.0. I os

32、c 351 bl PLL SYNTHESIZER CIRCUIT r IC M54922P t I llt oarr I a I - rN l M / F M I PO G) LD + 3 5 . 6 d 8 A T l k H r 8CD TO OECIMAL OECOROER FM,/Ail sELEcroR va vs vo Yt Y2 Y3 vi rUNER SECTION EQ AMP FU NCTION S LE CTOR I POWER SW I - 1 # o r r I f Fr tql lj jf FREQUENCY DISPLAY P O W E R A M P L I

33、F I E R IONE CONTROL POWER SUPPLY CIRCUIT AUX ,/ Vt0O M U T I N G CONTROL - - FUNCTION SELECTOR r* g oFF fcl sw q MoD sw SPEAKERS r f- -o v MoNo oN R , C H -r I pxorts -+r T ,isrlvE;: r,*.is* | ;j* | l, *rlT,t- ,*i i,i*,*l l 1 ? T ?-.- I l.Lt -,s I l -1.1:* l=:;,*,1 l,u I I,:f ,-,H-i. io*+* -+ I =u.

34、1-,;rj, q1taJ, , lr, t.tl , n* t ,i,#;. I T rilj.ilF ffii;riqiki ,*lti; ;i.i,4t#ht*;tl,q tu r rr,: i ;lihqffi,-i?# * t r l#:ilil i,lr:-l * I IL * ii;:i:,fGl-i:r p,a* s,T,i, Inwffi*,t$trffift.b STEREO OUT Rll fir12 ?2K 2,7X lffiffiffil ffiffiffi 0104,r05 1Sr555 Lht ,.P . l y 9,:.ri -rr . tRe6 q I l0/

35、1/2r) fi9.:i.i. :re i .l il2!. r:i t lo(r?!ii,. . I cisiD03l Q3os 310 2sc2362 llSi; i3l r.r 03,3.3,4 rc5o, 3i33:i3i il!,* -e.o Q3?1.322 25A650 .- zs.o Q327 3?8 250525P , ,-iu.o, (-5o) I ir, *1 f.,LS,. H* -d 1 * il.gJt,- -bi ., I iit *,5 16 1tf l , I igu,00p400 ,;*1 iil,$ -ftr*,iil , l. h *,1 -rz Jna

36、z rg.L ; ,-rz , ir t, | tt.ffi I ttort rp-R ow J , ll ll1 , 1 f,rp,! flr 1 h,. I t l?;uoo i 4n tEut t I I A lono l*o,0, llt t h,:q l:l lttl hpj.i rx rl*5J -tsa:l- ir r 6r rt* ,lli-hl i r o 150( rl- c143 t or ciir 22125 1t t tt l l R$: 2 2l( Qe6 . - 6 , of;rf#r $,1 l?#;t , 5;$6;lsil l;P I fq i f +,;,

37、 -t*i,.i i I i ,p1 ititt:ii1l i I +:,s ,hfr f*fo. ,i3il,*,.,r,*r ,rl ,r,* i*iff-,tJi*? Q32a Q3O6 Q?O2 Q324 Q3rO O1O8 I7 Q3rOO33O Q329 Q3?1 Q317 Qrc7Q2r5 Q314 Q313 Q3O9 Q325 Q322 Q4O4 Q4Or Q?3 Q327 Q2O6 Q305 29.O f tzsot zQrzs t -l(4ba) 2)ll , *rf ill rr ,J1 ll I qree I 2( I I RadioFans.CN 收音机爱好者资料库

38、 A - AC | 20v SOHz SWITCHED UNSWITCHED loow toow HEADPHONES JACK Assy B q c D I SWITCH Assy RadioFans.CN 收音机爱好者资料库 I 7. SCHEMATIC DI NOTE: The indicated semiconductors are representatiue ones only. Other alternatiue semiconductors may be used and are listed in the parts list. - 3OOn L 750 I l2 AGRA

39、M 3 2SC1919 2SC710 2sAz26s Lot No h . E A - - C - | 22o I a , l B D f* I t-rdl a L C H aux/vt0E0 tpiNl .PLAYIIN L CH | *.ror, . fi5 tl -T PLAYIIN R ca l I ,- 1!/- 132 o2d- 1,2 NV1226 0!t( all tsll 0 2 5 _t RadioFans.CN 收音机爱好者资料库 654 2SC1845 258560 2SA992 2SC1384254684A Type No Type No Type No Type

40、No - I _:3r qro,fi1 2sa726s l.;-r*;l i r*iJ li-$ I I :.1i I - ! ) + . - i _ I n*l 0417 rsl555 EATTERY _F-l r 6 l t r 6 j I .,.o oc7.2, o, o,1 ., 1. AF AMP OIO + o40r 2SCr3A4 l - It t l tl n i l 3 l d t )t F;n *,:1J i;tl. ,4. I . | | *+ tl *-.rQ/:,1,* A ,l A , fr#f,: .,j ;,4 0404,4O5 rOEZ il t _ _ D

41、4 C o4o2, 40 2SOAa 0405 JCI D402 KZLOTi 0403 XZLIt J l*l : ,!.? Et!r F lEl lljlllril l fr ? s ,ol E i.,* qo4,lo5 1St555 z t bE6I;f ,f,il+;fffif - . _ - - * t c 6 - L ._ itt |ocoz, eoe ooo *r.or t t- .;J - 1 | r s z a 7 1 I l I cros rato, AUTO MONO r ) d J I - i,-l oeos 61lrwr I KzL14O . , A , 4 t- l

42、. u i,.-f,.tl. -;-l .: G) ,2.+ 7 .) J.;i - y:J2q!5 It T at- l.I;rt U?il az I o o / r c -tFrt I % ., + j It ii l l f!- I r,;r I I a + i Ll -qr A a$zcrt a= lF II I - L ril t ltl -l *.1 -r- I hrD ;t-l- rori * - J ra I lf-l- ilp- I tfgi- i+ :ll + IILft itE- I lf_ty_i itft |ft itffi !t6+ | i1r I L :*: l

43、iE i l; il : IPr t | tl ILJ L-: , ,_u5rt I o4o4 zsa6a4a i II _-_j I I i nraoerores JAcK Ass,y lf:J-,.1 L ll il l l ri+iil _tri t.,t l;J l 4 0 r : -L- L_-_= i a i,i 5 316 355 i r c II I D!r 3l r s r M U ! I lli;an T j rs crc.I lr I A pt l , r o i rf( -d. ,j?,Irj Ll ;.;. - I II J ili*.* - )+- - ti:.5

44、| ,rg: EI fiv $ Q!23t 324 escl 735 03a7,324 2S0525 P o325, p6 2SB 595P 32/- 324 l l l. t, , P. i-N r,- - J -A ,-, 9 9 ! -i- F.-,-l . 03o7, 2SCtA o305. oo 5 306 - I !:F 6; ; T l n L tr,tl 1 .:;a ,I -4r, o301 xzL140 A L. ; 6 . : +J r(x i vr*13 rFl 16 A D2Of,2OA tsi555 t* ;-ii -1 t_ F F g t* s F) Li F

45、q F Lg if. * Q!i3 ! 314 J C 3 0 1 o!o9, 3to 2SC 2362 ,t?z 2SA A50 | | r!r. c!.t lJ6 c!.? i3?. | _- I ! (_/Hnet+ | L_. : *:-:* 6 15l 4 -L RadioFans.CN 收音机爱好者资料库 I8I oN - 9!f ON - 9II ON gli o N - oN - 9! ON gEE oN - 9rl oN - -Q! oN - 9!l ON - 9II 7 2SA798 25K61 Type No 2SC2603lAl 2SAl I 15/A/ 25C224

46、0 Type No Type No -Type No BATTERY -l_ -J /.; -: sw TcHEs i S TUNlN6 (UP) s2 luNrNc (oowN) Sf, MEMORY/STOP 54 STATION CALL 1 55 STATION CALL 2 56 STAIION CALL 3 57 SIAT1ON CALL 4 Sg STAiION CALL 5 59 STATION CALL 6 SIO INPUT (PHONO) sr rxPW (aux /vtoEo) S 3 A M s o l I s l o - 3 sro2 stoS TAPE / AOA

47、PT ON qI MONO/MUTE 6F SIEREO/ON - MONO/OFF LOUoNSS ON 9!q N CHANNEL STEP 9kAt - M POWER ON _ OFF The lndar nad nd carss rhe sw rch pos r on 1 AES STORS Indicatd in lt, yiw, l/8 W !5% lorera.ce un $ otheBie nord k k M MQ,IF) i1%,(Gl .2% (K) 1*. *r; -O r A ;-tAcoNTRoL Assy B J- cwx-7al t1/t) L- T I =-

48、1 q3 rc4069!AP 0 5 c CONNECTOR Assy A3sy l1/ 2) 05fr AL - 35I I8 7 I 36 coNTROL Assy B GWX-7!7 (2/3) F;. R ; =l i.i;, llli_iiq i i 03 wz-157 I L._- o.,5 rsr555 06 sz-o27 | - - I 1 I 05ro aEL-365 RadioFans.CN 收音机爱好者资料库 I 12 2SA798 10 2SK168 11 -Lot No 2sD313 N 2sD880 r,c. r.-f) i,.ffifurn. ry! ;:3:t,.+ ;ffi,-. 2sc2s62 . - ftt, lyl -nFE ill .|l :3ff3 *-ffi he hv- rvpeNo ( A B C L81473 M*922P LA1247 P44008 HAl 156W-P TC4O69UBP