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nual $eftice six-3s|oo FM €Iuartz Locked S T E R E OR E C E I V E R ()proNEER' C O M E SI N T W O V E R S I O N SD I S T I N G U I S H E DA S F O L L O W S : MODELSX.3gOO Remarks Voltage Type KU 120Vonly U . S . A .m o d e l 5/U I 10V, 120V, 22Oand240V (Switchable) U . S .M i l i t a r y m o d e l This servicemanual is applicableto the KU type. When repairingthe S/G type, pleaseseethe additional servicemanual (seepages47 -56l.. 1. SPECIFICATIONS CONTENTS 1. spECtFtcATtoNS 2 2 ' F R o NPr A N EFLA C I L T T I E S DIAGRAM 3' BLocK 4 . c l R C UD lrESCRIPTIoNS a 7 P o w e rA m p l i f i e rS e c t i o n C o n t i n u oPuosw e0r u t p u0t f 1 2 0w a t t s x p cehr a n n e l ,m i n . a , t 8 o h m sf r o m 2 0 H e r t tzo 2 0 , 0 0 0 H e r t zw i t h n 0 m . r e t h a n0 . 0 0 5 %t o l a lh a r m o - 4 . 1 F MT u n eSr e c t i o n 4.2 AM TunerSection 8 9 n i Cd i S t O f t i O n . 4.3 9 g ohms) c o n t i n u o u s r a t e d p o w e r o u t p u tN. .o m o r e t h a n 0 . 0 0 5 % 6 0 w a t t s p e r c h a n n e lp o w e r Audio Section 4.4 DisplayCircuits 4.5 P r o t e c t i o nC i r c u i t current suppressor 4'6 Surge ....... 11 13 " " " ' l5 15 5 ' D I S A S S E M B L Y' ' 1 E 6 . P A R T SL O C A T I O N 16 7 . D I A L C O R DS T R I N G I N G. g. ADJUSTMENTS 18 Section 8.1 Audio 8.2 T u n e rS e c t i o n . 1e (20Hertzto 20,000 Hertz, Distortion To,rlHarmonic ,",1r',jlltr,r.ion oirioriion iuorrrrrltrl;f ;::ltjT:"fl c o n t i n u o ursa t e dp o w e ro u t p u t . . N o m o r et h a n0 . 0 0 5 % 6 0 w a t t sp e rc h a n n epl o w e r ' . . . ' N o m o r et h a n0 . 0 0 5 % output R e s p o n s e Frequency *! aa T iorTln?,t'.2 rnpr.s.nriiiui,vli,.np.oun..t,i;ff 20 DIAGRAM 9, SCHEMATIC p . c . B o A R D Sc o N N E C T T o ND T A G R A M 10. 24 I1.PARTSLIST. 35 1 2 . E X p L o D E Dv t E W 41 1 3 .P A C K | N G . . . . 46 E A N U A L F O RS / GT Y P E A D D T T T O N ASLE R V T CM 41 29 ..... 'l V/50kilohms OUtPUt ' ' ' ' ' A' B' A+B -speaker D a m p i n gF a c t o r( 2 0 H e r t zt o 2 0 , 0 0 0H e r t z ,8 o h m s ) ...60 r t r . i r .i i H i , r r r o r t c i r c u i t eAo ,n e t w o r k ) Hr..;; 115d8 ""' P r e a m p l i f i e rS e c t i o n In p u t ( S e n s i t i v i t y / l m p e d a n c e ) 2 . 5 m V / 5 0k i l o h m s P H O N O1 , 2 . . . A U X , T A P EP L A Y 1 , 2 , ... 150mV/50kilohms ... ADAPTORIN P h o n oO v e r l o a dL e v e l( T . H . D .0 . 0 0 5 %1, , 0 0 0H e r t z ) 300mV PHONO 1.2... l Pedance) O u t P u t( L e v e l /m T A P ER E C1 , 2 . A D A P T O RO U T 150mV PREAMP O U T ( R L :5 0 k i l o h m s ) . . . . 1 V l 1 k i l o h m s( V o l u m e :m a x . ) T o t a l H a r m o n i cD i s t o r t i o n( 2 0 H e r t zt o 2 0 . 0 0 0H e r t z ) P H O N O1 . 2 ( R E CO U T ) . . . . . . N o m o r et h a n0 . 0 0 5 % ( 1 0 Vo u t p u t ) sx-3900 A U X , T A P EP L A Y 1 , 2 . A D A P T O RI N No more than 0.005% (10V output) F r e q u e n cR y esponse P H O N O( RI A A E q u a l i z a t i o n ) . . . 2 0 H e r t zt o 2 0 , 0 0 0H e r t zt 0 . 2 d B A U X , T A P EP L A Y 1 , 2 ,A D A P T O R OUT +9 ' ' ' ' ' 7 H e r t zt o 8 0 0 0 0 H e r t z d B Ton. contror B A S S. TREBLE AM TunerSection S e n s i t i v i t (yl H F , F e r r i t ea n t e n n a .) . 300sV/m (lHF, Ext. antenna)" . 1SpV Selectivity 30dB S i g n a l - t o - N o i sR e atio 50dB l m a g e R e s p o n s eR a t i o 40dB l F R e s p o n sR e atio. . 40dB Antenna F e r r i t el o o p s t i c k an t e n n a ! 4 d B / ! 7 d B( 1 0 0 H 2 ) f u rnoverFrequency : 2OOHz/ 400H2 (10kHz) +gdB/t7dB Tu rnoverFrequencv : 2kHzI 4k{z Filter L O W .. 1 5 H z( - 6 d B / o c t . ) HIGH. 8 k H z( - 6 d B / o c t . ) L o u d n e sC s o n t o u r( V o l u m ec o n t r o ls e t a t - 4 0 d B p o s i t i o n ) . . . . + 6 d B( 1 0 0 H 2 )+, 3 d B( 1 00 0 0 H 2 ) H u m a n dN o i s e( l HF , s h o r t - c i r c u i t e Adn, e t w o r k ) PHONO . .. . .. 86dB A U X , T A P EP L A Y 1 , 2 , ADAPTORIN... 10 5 d B -20d8 Attenuator. FM Tuner Section U s a b lS e e n s i t i v i t( yl HF) 5 0 d BO u i e t i n gS e n s i t i v i t y MONO STEREO S i g n a l - t o - N o iR s ea t i o MONO S T ERE O D i s t o r t i o n( a t 6 5 d B f) MONO 100H2. lkHz . 6kHz ' S T E R E O1 0 0 H 2 . ikHz . 6kHz O u t p u t( L e v e l /m l pedance) F M ( 1 0 0 %M o d . ) . A M ( 3 0 %M o d . ) . 6 5 0 m V / 2 . 4k i l o h m s 20OmV/2.4 kilohms Semiconductors lCs... FETs. T r an s i s t o r s Diodes M iscellaneous P o w e rR e q u i r e m e n t s P o w e rC o n s u m p t i o n Dimensions 9 . 8 d B f( 1 . 7 p V ) t5 o 89 62 AC 120V.60H2 3 5 0 W( U L ) 5 2 6 ( W x) 1 7 6 ( H )x 4 5 2 ( D )m m 2 0 - 1 1 / 1 6 ( wxl 6 - 15 / 1 6 ( H ) x 1 7 - 1 4 / 1 6 ( Di nl 2Okg(441b 2ozl 14.2dBf(2.8pV) 3 6 d B f( 3 4 . 7 p V ) Weight(without package) 8 3 d B( a t 6 5 d B f ) 7 8 d B( a t 8 0 d B f ) O p e r a t i n gi n s t r u c t i o n s FM T-type antenna 0.1o/o * Measured pursuant to the Federal Trade Commission's Regulation rule on Power Output Claims for Amplifiers. FurnishedParts o.o7% oJ% O.27o o.15% O.2To C a p t u r eR a t i o . . 1.0d8 A l t e r n a t e C h a n n e lS e l e c t i v i t y 400kHz ......80dB S t e r e oS e p a r a t i o n 1 k H z . . . . . . . 5 0 d 8 3OHzto15kllz. ...... 35dB F r e q u e n c yR e s p o n s e ....2OHzto15kHz1!jaa Spurious Response Ratio. . . . . . . 100dB lmageResponseRatio ... lFResponseRatio.. .... AMSuppressionRatio ... S u b c a r r i e r P r o d u c tR a t i o . . . . . . . SCARejectionRatio .... M u t i n gT h r e s h o l d Antenna Input . Audio Section 90dB 100d8 60dB 64dB 64dB 1 9 . 2 d B f( S g V ) 300 ohms balanced, 75 ohms unbalanced. 1 1 Trade NOTE: Specifications and the design subject to possible modifications without notice due to improvements. 2 . F R O N T P A N E LF A C I L I T I E S O POWERSWITCH SWITCH O T R E B L ET U R N O V E R SetthisswitchtooNtosupp|ypowertothereceiver. is setto ON' because Therewill be a shortdelaywhen it the to suppress the muting circuit has been actuated the when generated unpleasantnoisethat is sometimes off ' Poweris switchedon and @ BASSTURNOVERSWITCH frequency in which Use this switch to change over the bass control is starting the sound adlustment with the or 400H2 in accordance to take effect. Select 200H2 withthecharacterlstics'ofyourIisteningroomandof preference' y o u r s p e a k e r sa, n d w i t h y o u r g e n e r a l @ E A S SA N D T R E B L EC O N T R O L S bass and the treble' Use these controls to adiust the and turn the bass ON lf you set the tone switch to controItotherightfromitscenterposition,youwi||be ab|etoemphasizethesoundinafrequencyrangewhich bassturnover switch' is lower than that selectedby the f r o m t h e c e n t e rp o s i t i o n c o n t r o l C o n v e r s e l y t, u r n i n g t h i s to the left will attenuate the sound' adjust the sound in a You can use the treble control to by the treble turnfrequency higher than that selected over switch. @ T O N ES W I T C H bassand treble Set this switch to ON when adjustingthe tone control c o n t r o l s .W h e n s e t t o t h e O F F p o s i t i o n 't h e circuitsaredisengagedandfrequencyresponseisf|at. Thisfunctionisconvenientforcheckingphonocartridge room acoustics' a n d s p e a k e rt o n e q u a l i t y a n d l i s t e n i n g the frequency in which Use this switch to change over treble control is starting the sound adjustment with the or 4kHz in accordance to take effect' Select 2k{z withthecharacteristicsofyourIisteningroomandof preference' y o u r s p e a k e r sa, n d w i t h y o u r g e n e r a l @ noRProRswlrcH SetthisswitchtooNwhenreproducingsoundfroman to the ADAPoptional componentwhich is connected p o s i t i o ni f y o u a r e upper T O R i a c k sA . l w a y ss e ti t t o t h e n o t u s i n ga c o m p o n e nwt i t h t h e s et e r m i n a l s ' SWITCH @ T A P ED U P L I C A T E you want to duplicate or Set this switch to ON when two tape decks' edit a pre-recorded tape using @ T A P EM O N I T O RS W I T C H a r e c o r d i n gi n E m p l o y f o r t a p e p l a y b a c ko r t o m o n i t o r progress. P l a y b a c ko r m o n i t o r i n g o f a t a p e d e c k c o n 1: nected to the TAPE 1 jacks' position when not SOURCE: Be sure to set to this monip usingthe tape deck for laybackand 2: tori ng' conP l a y b a c ko r m o n i t o r i n g o f a t a p e d e c k jacks' nected to the TAPE 2 NOTE: be sure to set this When listeningto recordsor broadcasts' from speakers obtained be not witt switch to SOURCE' Sound if it is setto 1 or 2. six-39cl(f €) BALANCECONTROL U s e t h i s c o n t r o l t o b a l a n c et h e v o l u m e o f t h e l e f t a n d r i g h t c h a n n e l s .F i r s t , h o w e v e r , s e t t h e m o d e s w i t c h t o M O N O . l f t h e s o u n d a p p e a r st o b e l o u d e r o n t h e r i g h t , i t means that the volume of the right channel is higher. Turn the balancecontrol to the left and adjust.Conv e r s e l y ,i f t h e s o u n d a p p e a r st o b e l o u d e r o n t h e l e f t , i t meansthat the volume of the left channel is higher. T h e r e f o r e . t u r n t h e b a l a n c ec o n t r o l t o t h e r i g h t a n d a dj u s t . A f t e r a d j u s t i n g , r e t u r n t h e m o d e s w i t c h t o STEREO. @ M O D ES W T T C H U s e t h i s s w i t c h f o r s e l e c t i n gm o n o o r s t e r e o p e r f o r m a nces. STEREO: Set to this position for normal operations. MONO: W h e n s e t t o t h i s p o s i t i o n ,t h e l e f t a n d r i g h t c h a n n e l s i g n a l sw i l l b e m i x e d a n d r e p r o duced monophonically from both speaker systems. o v o L U M EC O N T R O L Use this control to adjust the output level to the s p e a k e r sa n d h e a d p h o n e sT. u r n i t c l o c k w l s et o i n c r e a s e t h e o u t p u t l e v e l .N o s o u n d w i l l b e h e a r d i f y o u s e t i t t o -. The scale is graduated in dB which indicate the a t t e n u a t i o nw h e n t h e m a x i m u m o u t p u t l e v e li s 0 d B . € ) M U T I N GS W I T C H Set this switch to the *20d8 position to attenuate the a u d i o o u t p u t i n d i c a t e db y t h e v o l u m e c o n t r o l b y 2 0 d B . T h e r e i s n o n e e d t o a d j u s tt h e v o l u m e c o n t r o l i f y o u u s e this switch when turning down the audio output temp o r a r i l y a n d w h e n c h a n g i n go v e r r e c o r d so r t a p e s . G ) H E A D P H O NJEA C K P l u g t h e h e a d p h o n e si n t o t h i s j a c k w h e n y o u w a n t t o l i s t e nt h r o u g h y o u r s t e r e oh e a d p h o n e s . Releaseboth speaker switches if you want to listen to t h e s o u n d t h r o u g h y o u r h e a d p h o n e so n l y . (E SPEAKER SWITCHES D e p r e s st h e s w i t c h c o r r e s p o n d i n gt o t h e s p e a k e r sc o n n e c t e d t o t h e S P E A K E R St e r m i n a l s( A o r B ) o n t h e r e a r panel. You can depress both of these buttons to listen to the sound from two pairs of speaker systems at the same time. (15H2) @ L O WF I L T E RS W I T C H D e p r e s st h i s s w i t c h i n t h e e v e n t t h a t t u r n t a b l e r u m b l e , recordingcutting noise or other low frequency noise b e c o m e s o b j e c t i o n a b l e .A t t e n u a t i o n i n t h e f r e q u e n c y bandbelow 15Hz is6dB/octave. (8kHz) G ) H I G H F I L T E RS W I T C H D e p r e s st h i s s w i t c h i f r e c o r d s c r a t c hn o i s e o r o t h e r h i g h f r e q u e n c y n o i s e b e c o m e so b j e c t i o n a b l e A . ttenuation in t h e f r e q u e n c yb a n d a b o v eS k H z i s 6 d B / o c t a v e . € ) P O W E RM E T E R This meter allows you to read out the rated power level o n t h e f l u o r e s c e n t d i s p l a y t u b e w h e n s p e a k e r sw i t h a nominal impedanceof 8 ohms are connected to the s p e a k e rt e r m i n a l s . @ DrALPOTNTER T h i s p o i n t e r i n d i c a t e st h e b r o a d c a s t i n gs t a t i o n s . rNDrcAToR @ rnnSTEREo T h i s i n d i c a t o rl i g h t s u p w h e n r e c e i v i n ga n F M s t e r e o p r o g r a mi f t h e F M m u t i n go f f s w i t c hi s r e l e a s e d . @ o U A R T Z L O C K E D| N D | C A T O R This indicatorlightsup after the optimum tuning point h a s b e e n o b t a i n e d a n d d i s p l a y st h a t t h e r e c e i v i n gs t a t e i s s t a b i l i z e db y t h e b u i l t - i n q u a r t z l o c k c i r c u i t . €D SIGNAL INDICATOR T h i s i n d i c a t o r l i g h t s i n s e q u e n c ef r o m l e f t t h r o u g h r i g h t d u r i n g t h e t u n i n g o f a n A M o r F M b r o a d c a s ti n a c c o r d a n c e w i t h t h e s t r e n g t h o f t h e s i g n a l sb e i n g r e c e i v e d . The optimum tuning point is where the maximum n u m b e r o f i n d i c a t o r sl i g h t . rNDrcAToR @ rururNG W h e n t u n i n g i n a n F M s t a t i o n ,t h e o p t i m u m r e c e p t i o n p o i n t i s i n d i c a t e dw h e n t h e c e n t e r i n d i c a t o r l i g h t s u p . W h e n t h e l e f t i n d i c a t o rh a s c o m e o n , r o t a t e t h e t u n i n g k n o b s l i g h t l y c l o c k w i s e .W h e n t h e r i g h t i n d i c a t o rc o m e s o n , r o t a t e t h e k n o b s l i g h t l yc o u n t e r - c l o c k w i s e . YI S P L A Y @ F R E O U E N CD T h i s i n d i c a t e st h e f r e q u e n c yw h i c h i s t u n e d . W i t h F M r e c e p t i o n ,t h e l e t t e r s " F M " a p p e a ro n t h e l e f t of the displayand "MHz" on the right. With AM recept i o n , " A M " a p p e a r so n t h e l e f t a n d " k H z " o n t h e r i g h t . These change when the function selectorposition is c h an g e d . @ T U N I N GK N O B U s et h i s k n o b t o t u n e i n t o b r o a d c a s t i n gs t a t i o n s . 5 @ F M M U T I N GO F F S W I T C H tuned W h e n t h i s s w i t c h i s r e l e a s e da n d a n F M b r o a d c a s s u p p r e s st h e t o i n s i d e in, the muting circuit is activated broadcasting the between annoying interstation noise ' henthe broadcastf r e q u e n c i e sf o r n o i s e - f r e er e c e p t i o n W r e c e i v i n ga s t a t i o n i n a w h e n ing station is far away or O F F p o s i t i o na n d t h e n t h e t o f r i n g e a r e a ,s e t t n e s w i t c h with a strong station tune in. lf there is a broadcasting program whose station a to signal level on the air next tune in to able be not you may you want to receive, d r o w n ed out b e w i l l s o u n d t h e s a t i s f a c t o r i l yb e c a u s e t h e FM s e t t h i s ' l i k e c a s e s I n by the stronger signals' p o s i t i o n )and ( d e p r e s s e d O F F MUTING OFF switch to the w h e n w o r k n o t d o e s tune in. The muting circuit b e en h a s t u n i n g l f b r o a d c a s t s ' t u n e r i s r e c e i v i n gA M b e en h a s s w i t c h O F F M U T I N G F M p e r f o r m e da f t e r t h e quartz locked the selected. depressed and a station the LOCKED circuit is set to the OFF mode and i n d i c a t o rd o e s n o t l i g h t . @ FM 25PSSWITCH a Dolby* FM Depressthis switch when listening to the released at switch broadcast; otherwise keep this position. @ ) B R I G H T N E SSSE L E C T O R of the power Use this switch to select the brightness m e t e r a n d t h e f r e q u e n c Yd i s P l a Y ' or other B R I G H T : W h e n u s i n g t h e r e c e i v e ri n d a y l i g h t DIM: SELECTOR @ FUNCTION to the Deoress the function switch which corresponds first d o w n program source.Turn the volume control the w h i l e b e f o r e s e l e c t i n ga d i f f e r e n t f u n c t i o n s w i t c h s o u n d f r o m o n e p r o g r a ms o u r c ei s b e i n g r e p r o d u c e d ' FM: AM: AUX: this switchfor FM broadcasts' Depress this switchfor AM broadcasts Deoress an D e p r e s st h i s s w i t c h w h e n l i s t e n i n g t o AUX the to audio component connected iacks. p l a y i n ga r e c o r d o n P H O N O 2 : D e p r e s st h i s s w i t c h w h e n the turntable connectedto the PHONO 2 j a ck s . p l a y i n ga r e c o r d o n P H O N O 1 : D e p r e s st h i s s w i t c h w h e n 1 the turntable connected to the PHONO iacks. NOTE: a ilme' OnlY one function switch should be depressedat @ L O U D N E SS W l r c H the volume When listening to a performance with and the bass control turned down, depressthis switch a n d t r e b l ew i l l b e a c c e n t u a t e d ' i t h a r d e rt o f Whenthe volumeis low, the human ear inds volume is high' h e a r t h e b a s sa n d t r e b l e t h a n w h e n t h e for The loudnessswitch is thus designedto compensate a nd b a s s t h e t h i s d e fi c i e n c y . B y d e p r e s s i n gt h i s s w i t c h ' s o u nd t h e a n d treble come through much more strongly is c o n t r o l takes on a puncn even when the volume turneddown. bright locations' A t n i g h t o r i n d a r k l o c a t i o n sw h e n t h e e x i s t i n g b r i g h t n e s si s t o o h i g h ' *Theword,,Dolby''isatrademarkofDoIbyLaboratoriesInc. sx-39clcl 3. BLOCK DIAGRAM Tuner Section r c ( H A l 2 0 1 )0 OUARIZ LOCKEO AM TUNER 5-POINT SIGNAL I N D I C A T O RO R I V E A M O rUN]NG INDICATOR FREOUINCY FM OISPLAY MHz ,ODDD , t_, t_t.t_t t_t AM CoUNTER Oi - D5 TIME DIVISION 7- SE6M€NT OECOD€R ROM s1s2 s3 s4 Audio Section IAPE 1 _-. ^ REC PLAY .":- ADAPrcR OUT IN ar lr R CnANNE- . IHL SAME A5 IHF L CHAN\EL ) FREA!ENCY FL TUSE 'UIER SECTION KHT apIF system IC (PA300?-A), it is amplified and conwhich 4-1) Fig' (see detector to a crystal a series sists of diodes connected in parallel in resonacrystal a with equipped circuit resonance as the IF same the is frequency i.r. irt" resonance fr"qr".r"y (10'?MHz), which meansthe impedance in the outat it ls time will be minimal, resulting level' If the input fut being reduced to a minimum capaciiruq.r"rr"y increases-the reactance of the of the tanie stage(C) is reduced,and the reactance AM in ir"rar"tun"u stage (L) increased,resulting portion positive Jetection by D2 which leavesthe decreases' frequency input If the IF signal. of the reacC stage and decreased is reactance L stage D1 by tance increased,resulting in AM detection IF signal' which leavesthe negativeportion of the as the it'r" t stageand C stagereactancesinctease is degree oidetuning in the respectivedirections in in&eased, resulting in a subsequentincrease S-curve the detector output. By thus attaining possible' characteristics,FM detection becomes deviaSince the IF signalis an FM signalfrequency be symmetrical tiorl-a"" to iodulation, it will is about a central axis. And if the central frequency outdetector the equal to the resonancefrequency, o,rt OC level will be zero. If, however,there is any displacement in the central frequency, frequency become deviation in respect to the detector will a DC of generation aryrrr-utri"a1, resulting in the LPF1 through passed This DC voitage is "liiug". (IF filter) and LPF2 (AC filter) to form a correccapaciiion voltage which is applied to the variable tancediodeinthelocaloscillator,therebycorrectconstant ing the oscillator frequency to obtain a frequency)' tn' (i.e. a constanttuned detecSince the central frequency of the crystal tuned resonator' crystal the tor is regulated by obare stability high frequencies of exiremely tained. 4 . C I R C U I TD E S C R I P T I O N Sptiei 4 . 1 F M T U N E RS E C T I O N Front End a 4 The FM front end of SX-3900 includes FETMOS ganged tuning capacitor, a dual-gate a modified Eo"Too"A l-slage RF amplifier' and is a oscillator This circuit llcal oscillator' ai;; vari-cap a uoiiug" controled oscillator employing (varia'blecapacitancediode)' When the.quartz-lock is not in ,yrt"..t (refer to "Quartz-lock system") to the applied is operution, a constant voltage diode. lF Amplifier and Detector Theseemploy 3 ICs and 3 dual-elementceramic stageconfilters. fne lC (HA1201) of the first 2 currentamplifier stitutes a single-stagedifferential third the (PA300?-A)-in ii-lti.rg limitet. The IC IC iF system former stage,an improvement on the amplifier' iimiter iF ai, includes an liigool cirquadrature detector, meter drive' and other S/N distortion' of cuits. Performance in terms parameters' ratio, delay characteristics,and other to comparison in ,ho*, a marked improvement the PA3001-A. Ouartz-LockSYstem SX-3900 The quartz-lock systemfeaturedin the system control serl/o stereo receiver is a frequency displacement Any employing a crystal resonator' detected as a i.r itt"-lntlrmediate frequency (IF) is with a (equipped DC voltage by the discriminator oscillator local the in crystal resonator)' resulting ir"qt"r-r"y being corrected and subsequently servoconlocked. This extremely stablefrequency frequencies tuned that trol system thus ensures remain tuned securelyfor aslong asrequired' of the When the IF signalappearsat pin no'17 l c ( P A5 0 0 7 - A ) F M F R O N TE N D CRYSTAL DETECTOR | : ( L ) C I R C UI T F i g .4 - 1 O u a r t zL o c kS Y s t e m a ----, 1 3 + i I sx-39clo o Limiting the Locking Range If the quartzJock range is too wide, it will overlap with strong adjacent broadcasting frequencies and result in considerable tuning difficulties. A DC amplifier is therefore used as a limiter (limiter action by NFB circuit zener diodes) which restricts the voltage applied to the variable capacitance diode, thereby limiting the quartz-lock range. A DC voltage appears at pin no.13 of the IF system IC (PA3007-A) when the antenna input ievel drops below 5pV, or when the tuned frequency has been detuned by more than t100kHz. This DC voltage (FM muting signal) is applied to the gate of Q2 (FET) via a Schmitt circuit, resulting in the FET being turned on, and the quartzIock circuit being turned off. Multiplex Decoder The recently developed multiplex decoder IC (PA4006-A) combines MPX decoding with muting functions in a single IC, thereby handling the functions of the more conventional MPX IC (PA1001 A) and AF MUTING IC (PA1002-A). Distortion ratings and S/N ratio have been further improved by incorporating a chopper type MPX decoder. The chopper type switching circuit (see Fig. 4-2) operates by switching the signal either to ground or to the through circuit, thereby eliminating the generation of unwanted noise or distortion. Furthermore, since the PA4006--4 features DC direct-coupled switching with the detector, there is no deterioration in separation at the Iow frequency end. Besides the decoder and muting circuits, the PA4006-.4 also incorporates the pilot signal canceller, stereo auto selector, VCO killer circuit, MU'l amplifier. and MUT control circuit. Composite si g n a l Inprt 4 . 3 A U D I OS E C T I O N P h o n oE q u a l i z eArm p l i fi e r Fig. 4-3 shows the basic configuration of the circuit. An S-N ratio of 86dB (at 2.5mV input, IHF-A) has been achieved by using a ultra-lownoise PNP transistor (2SA978) at the first stage, and reducing the signal source resistance and equalizer element impedance. High voltage gain is provided in the following stage by a bootstrap circuit. The output stage is a complementary symmetrical SEPP circuit. The high voltage utility factor of the SEPP circuit provides a high maximum output voltage. Dynamic range of the equalizer amplifier is therefore wide and overload input level at 0.005% distortion is 300mV (rms at lkHz). tNHMrl F i g .4 - 3 P h o n o E q u a l i z e A r m p l i fi e r Tone Control Fig. 4-4 shows the basic configuration of the circuit. This circuit is an NFB type tone control with IC (HA12017P). Tone control (BASS, TREBLE) is accomplished by providing the tone amplifier NFB circuit with a frequency selective characteristic. The capacitance of C7-C4 are changedby the TURNOVER switches (by adding another capacitors in parallel) to provide selectionof the frequency. The NFB circuit is changedto a flat frequency characteristicwhen the TONE switch in the OFF oosition. Output JUIIUUUIJUIJU'.}. --'II ,in"r'r switchins S/ n L F i g . 4 - 2 C h o p p e rT y p e S w i t c h i n gC i r c u i t 4 . 2 A M T U N E RS E C T I O N The AM tuner section consists of a 2-ganged tuning capacitor plus an IC (HA1197) which contains a 1-stage RF amplifier, converter, 2-stage IF amplifier, detector, and AGC circuit. The AM STEREO OUT terminal on the rear panel is for connecting to an AM stereo broadcast decoder adaptor. The signal appearing at this terminal is the converter output passed via a buffer (emitter-follower) stage. Tone Control junctions formed by bias circuit consisting of 4 PN Power AmPlif ier Section VR1' D3 and Q4, and Q3, --Witft flow of o Amplifier Circuit R1 and D1 ensuring a constart be power may X the of point and The basic circuit arrangement current, the base of Q1 (level a is stage basis AC The an 4-5' on Fig' level it shown in -first brought to the same "-pilii"t amplifier comprising PNP twin transisfluctuationsduetothesignal)byasimpleshiftin aiti*""ti"f is a current be considered i.t te2l, the load circuit of which DC level. Furthermore, Q1 may (QB)' transistor resistance' twin emitter NPN the an as with R3 employing ;*;; X is inY and points "-iti"t-toffower Thecurrentmirrorprovidespush-pulloperationin When the voltage across harmonics apsignal even th.e cancel of to portion serves this stage, which creased by the positive signal input the gain' becomel. it itrls cirluit, and -- further increase ;i*i-;" outflow of base (Q1). since the emitteremitter_follower Qf in the input &cuit absorbs it-trri, of a generation the prevents and current from Q2, followervoltagegainispracticallyl,avoltage temperature DC voltage. BecauseQ1 follows any m o r e o r l e s s e q u a l t o t h a t o f t h e i n pY utsignal the center point increaseacrosspoints and X) voltage drift in Q2, temperature drift of the it, iirr"i is the voltat R5. And the R3 voltage voltage is Prevented. ir^*"J"""a Darlington of Q3 a is. (Q4, collector and Q5) stage base The pre-driver age applied across the a employs circuit' which of circuit power load jt"g: the the **g"-".rt, Pi"tin excess which forms part of be bias voltage applied to Q3 will constant-currentsource(Q6)resultingahighvoltil;h" points Y across voltage ttt" gain. age by the same amou"i " the by portion. of the signal) Tite power stagebias voltage is supplied and X increased(by positive high The circuit' no signal is being when sewocontrol level high spe"a bias above the voltage nonprovides speea bias servocontrol circuit applied. Consequently, the increase 1" l:]1"?:rn (refer to stage power cancels the decrease the in ,^*it"t ing operation lii"t. o.i"ts Y and X Z't}r,ereby maintaining ;'High SpeeaBias Servocontrol Circuit")' and X points toii"g"'u"t"ss Darlingthe PNP power a.2-stage is cutiing (Q7 without Q12) The power stage the idle current SEPP parallel is ton arrangement, tite tinat stage constant in the time no is there circuit. Bicause amplifiNFB circuit in the low frequency region' inputs will be cation is possible down to DC (DC however, by the input coupling capacitor)' ""l.it, o High Speed Bias Servocontrol Circuit within the By operating the power stage.only with miniactive region 1no possible cut-off).and servocontrol bias mum idle current,'the high speed discircuit prevents the generation of switching tortion and reducesheat loss' When there This circuit is outlined in Fig' 4-6' circuit' Q1 and Q2 are is no signal applied to the be on' The will and Q4 almost iut off' while Q3 of both of base and uoitug" across the collector RI V P R E -O "e aEsRi " may be time this at C l r c , i t r vo f N o n - s w i t c h i nAgm p l i f i e r t'n. d-d these transistors (Q3 and Q4) stage power the with disregarded. Consequently, *l ||'.l I nl Fi s . 4 - 5 P o w e r A m P l i f i e r C i r c u i t sx-39ocl stage off (noting that there actually is a slight decrease in current). For the negative portions of the signal, Q2 and Q4 are operated in the same manner, thereby preventing the NPN power stage from being cut off. 4.4 DISPLAY CIRCUIT Power lndicator Circuit The SX-3900 output power indicators feature fluorescent indicator tube (FL tube). In this tube, thermionic emissions from the cathode are accelerated into the fluorescent substance of the segmental anodes, resulting in the emission of light. This tube is used to indicate numerals, letters and other symbols. An outline of the FL tube drive circuit is shown in Fig. 4-7 .'lhe output circuit signal is first passed through a low-pass filter and a compressor circuit before being applied to pin no.6 (4) of the IC (TA7318P-A). The compressor circuit makes use of the non-linearity of rising portion of the diode's Vd-Id characteristics to contract the signal dynamic range by 20dB. The IC contains a detector circuit, compressor (40dB), and peak hold circuit for both left and right channels. The dynamic range of the signal is thus contracted by 6OdB to obtairr a "peak held" DC voltage. The output power indicator segments of the FL tube are driven by the HA12010 ICs (one for each channel) equipped with 12 pairs of voltage comparators. These comparators are biased at increasing levels, so each comparator will commence to operate separately as the input level increases. And since these comparators apply the voltages to the output power indicator segments, each successive segment will light up in tum as the input level rises. FrequencyDisplay Frequenciesreceived by the SX-3900 are displayed in digital form by fluorescent indicator tube (FL tube). Each digit employs up to 7 segments (a - g) (see Fig. 4-8) to display all numerals from 0 to 9 (with the exception of the left hand digit which employs only 2 segmentsb and c). o F F i g . 4 - 8 7 - S e g m eD n ti g i tD i s p l a y The signal source during both AM and FM reception is the local oscillator. The signal is passedvia a buffer amplifier (FET) to the prescalar IC (M54451P) where it is subjected to frequency division (1/8 for AM and 1/80 for FM) before being applied to the frequency counter IC (PD5009). This IC is responsible for the dynamic drive of the 7-segment 5-digit display (each digit being tumed on according to time-shared sequential scanning). rc (M54451P) FM LOCAL O S C , SI GN A L FM-AM SELECTION SIGNAL tc (fA7318P-At 1/2 LPF ' | N + + m t c ( H A i 2 o r o) I fltl E- -fl I w(8rl ) o.oo1 -- -- tr n Dtr !! !I t EE tr n Dt] l O.O1 O.1 FL TUBE F i g . 4 - 9 F r e q u e n c yD i s p l a yC i r c u i t 5;6141+O---1-t!rr-f{ t 7r7 rc(P05009) AM LOCAL O S C , SI G NA L 1 FL TUEE F i g . 4 - 7 P o w e r I n d i c a t o rC i r c u i t l 10 pO D5 B R I G H TN E S S SELECTION D4 03 DIGIT DRIVER MULTIPLEXER c o N T R O LC I R C U I T L A T C H LOAD GATE PRESETAALE 5'DIGI'T DECIMAL COUNTER D E C IM A L COUNTER FROM -P R E S C A LA R 22-BlT Vcc x 16 ROM GNO o f C o u n t elrC ( P D 5 0 0 9 ) F i o . 4 - 1 0 B l o c kD i a g r a m PD5009 is An outline of the composition of the given in block diagram form in Fig' 4-10' With condigit FL tube a - g segments(anode) for each pulse nected in parallel, the D1 D5 time division (indegrid ;i;"dr (rel nig. 4-11) applied to each grid ior each digit) result in .the digits G;J""i hand side' being Iit up in successionfrom the left 5ms internacf,"aigit is lit up for 1ms during each selector tul. Pin"no.? of PD500g is the brightness set to is width terminal. The time division pulse for 200ps to and ;00u; for H level input signals, FL of degree the L Ievel signals, therety varying lighting segment (by varying the tube brightness "Note that since the power indicator FL perioa). of brightiune is driven by static drive, the degree grid voltage' the ,r"rr rrruy be varied by changing the ffre f.f ZUHz crystal oscillator generates time the of preparation basic signal used in the gate circuit aiuirlon.-p.tlse signal and the counter control signal. F i g . 4 - 11 D i s i t S i g n a l Table 1 l n t e r m e d i a t ef r e q u e n c Y 10.67MH2 '10.70MH2 10.73MH2 - 6)^are used in Terminals S1 54 (pin nos'3 reception mode' The 2 reception d"i;;;tt"; (seeTable 1) are ;;d"t emptoved in the SX-3900 of input bv varving -rri" the combination ;;;;;;J FM during IFs s different ;;;i; iH uni l;' the in offset )re required in coping witir ]f ;.;; preset being 54 IF ceramic filter stage, 53 and the ceramic filter arrring FM mode acc-ordingto characteristics. "^'Aftfto.,gft the SX-3900 FM stage quartz-lock "capable of locking any frequency within .Vrt"- is (digit in the second ;ir;FM bani, the 10kHz digit decimalplace)intheFMfrequencydisplaywill appearonlY as 5 or 0' .*htu FL tube-alsoincorporates ^SiCXaL fr"qrrerr"y display inclicators' And alttre iUNf-fqC ana for these indicators though the segments(anode) drive cirur" ,iuti" driven uy itre corresponding D3 time the to tf," grid is driven according segments the placing ",ritr, pu"lsetiming, thereby liilit" the AM and FM ;;J", djnamic a'iul' ttt addition' i n d i c a t o r s i n t h e l r e q u e n c y d i s p l a y s e c t i o n aand relit while the kHz according to the OS timing' the D1 timing' MHz indicatorsare lit accordingto sx-39ocl TUNING lndicatorCircuit The TUNING indicator consists of a center tuning indicator (which lights up when a broadcasting station frequency is properly tuned) and 2 detuning direction indicators which indicate the direction in wnich the station has been tuned away from. The corresponding drive circuits are outlined in Fig.4-72. The TUNING indicator is activated once the station has been tuned to within t100kHz of the center frequency. This is because Q16 is turned on and Q21 turned off (resulting in the detector differential amplifier [Q19 & Q20] being turned off and Q24 being turned on) by the FM muting signal appearing at pin no.13 of the IF system IC (PA3007-A) and passed via the Schmitt circuit (Q17 & Q18) when the station is tuned away by more than t100kHz. The DC voltage on pin no.4 of PA3007-A describes an S curve when tuning to and away from a particular broadcasting frequency, the voltage on pin no.2 serving as the reference level. This DC voltage is amplified by the differential amplifier (Q19 & Q20) and then applied to a polarity detector switch circuit (Q22 & Q23). When tuning to a frequency from the high frequency side (or tuning away from the frequency to a higher frequency), the voltage on pin no.4 will be higher than that on pin no.2. The Q20 collector voltage will thus be lowered and the Q19 collector voltage raised, resulting in Q23 being turned on, and the higher frequency (right hand side) detuning direction indicator also being turned on. When, on the other hand, the broadcasting frequency is approached from the low frequency side (or when tuning away to a lower frequency) the pin no.4 voltage will be lower, resulting in Q22 being tumed on to light up the lower frequency (left hand side) detuning direction indicator. Wherl either Q22 or Q23 is on, the Q24 base voltage will be high, resulting in Q24 being tumed on and Q25 turned off, which means that the center tuning indicator will not be lit up. Once the broadcasting frequency has been tuned properly, the voltages on pin nos.2 & 4 will be equal. Consequently, Q22 and Q23 will both be turned off, which means that neither of the detuning direction indicators will be on in this case. And since Q24 is turned off because of the decreased base voltage, Q25 will be turned on, and the center tuning indicator light up. Furthermore, C77 is charged up via R99, resulting in Q26 being turned on, thereby lighting up the Quartz Locked indicator LED. SCHl,llTT CI R C U I T r ircuit F i g . 4 - 1 2 T u n i n gI n d i c a t o C S I G N A L I n d i c a t o rC i r c u i t The SX-3900 SIGNAL indicator consistsof an FL tube 5-point indicator display.The signalmeter drive signal obtained from the FM IF system IC (PA3007-A) and AM tuner IC (HA1197) is first amplified and then applied to the indicator drive IC (HA12010). This IC contains12 pairs of voltage comparators similar to those employed in the power indicator circuit, 5 of thesepairs being used to drivethe SIGNAL indicator(Fig. -13). CIRCUIT 4.5 PROTECTION purpose The of this circuit is to protect both the speakersand the power amplifiers. The relay in the output circuit is automatically opened in any of the following cases: 1. During the "transient operations" when the power supply is tumed on and off. 2. Upon detection of a DC voltage in the output circuit, caused by component failure or accident. 3. Upon detection of an overload, causedby a short circuit in the load. Muting Operationwhen PowerSupply is Turned On and Off With reference to Fig, 4-74 when the power supply is turned on, Q5 turns off due to -B (The time constant of the -B circuit is very small.). If there is no input (DC) on Q3 and Q4, they will be off, and the timing capacitor C4 charges up through R8 and R7, and thus Q6 turns on. When Q6 conducts, the relay operates,and the output muting on the power amplifier will be removed. When the power supply is turned off, -B will l c ( H A 1 2 0 1 )0 F i g .4 - 1 3 S i g n a lI n d i c a t o rC i r c u i t abruptly decay, and Q5 will conduct owing to the residui component of +B. As a result, C4 will rapidly discharge,Q6 will ceaseto conduct, whereupon the relay will become de-energized and restore muting. DC Voltage Detector The output circuit is connected to the Q3 emitter and qa trase via a low-pass filter (R5, C2)' Any DC voltages appearing the output circuit of the power amplifier, it will be applied to the Q3 emitter and Q4 base. If the voltage is positive, Q4 turns on. C4 will rapidly discharge'If the voltage is negative, QB tums on' C4 will rapidly discharge' As consequence,Q6 will turn off and the relay will become de-energized,thus causingthe output circuit to oPen. OverloadDetection The overload detector circuit incorporates the load (RL) in one side of a Wheatstonebridge (see Fig. 4-15). The base and emitter of a sensing tra'nsistor (Q2) are connected to the opposite corners of ttre bridge, so if RL decreases,Q2 will prebecome forward biased. If RL falls below a scribed value, Q2 will turn on' C4 will rapidly discharge. As consequence,Q6 will tum off and the relay will become de-energized,thus causing the output circuit to oPen. F i g . 4 - 1 5 O v e r l o a dD e t e c t o r F i q . 4 - 1 4 P r o t e c t i o nC i r c u i t sx-39ocl 5. DISASSEMBLY WoodenCover Remove the two screws (O o.r each side of the wooden cover. Bottom Plate Remove the thirteen screws Q to detach the bottom plate. Front Panel Remove all the knobs by pulling. liemove the two screws @ from the top edgeof the front panel. Remove the two nuts @ from the control shafts. .tt Front panel '- \ \--'-=.::att/77 S \ )rt" Bottom plate 4 . 6 S U R G EC U R R E N TS U P P R E S S O R Since the SX-3900 employs a large toroidal power transformer and two 15,0009F capacitors in the power supply circuit, the sudden surge of current when the power supply is turned on may reach several hundred amperes. The surge current suppressor circuit used to reduce this sudden surgeis shown in Fig. 4-16. When the POWER switch (S1) is OFF (i.e. no supply of AC power), the relay contact (S2) is open. But when this switch (S1) is tumed ON, the sudden surge of current is passedthrough R1-, thereby greatly reducing the flow of current. When the output DC voltage of the power supply circuit reaches a certain prescribed level, 52 will close,and R1 consequentlybe by-passed. The time required for this to occur, however, is considerably shorter than the time required for the muting circuit to operate when the power supply is tumed on, so there is no undue effect upon normal operation of the receiver. Microtemp is a temperature-sensitive fuse coupled to R1. If 52 fails to close due to an abnormality in the power supply circuit or relay, the heat generatedin R1 will cause Microtemp to below, thereby opening the primary circuit. When the POWER switch (S1) is tumed OFF, the relay driving circuit is opened, thereby opening 52 and the primary circuit. RELAY F i g . 4 - 1 6 S u r g eC u r r e n S t uppresso Cri r c u i t The A marh found on some component parts indicates the iiportance of the safety factor of the part' Thereparts of identical fore, when replacing, be sure to use designation. 6. PARTS LOCATION Front PanelView F l u o r e s c e n ti n d i c a t o r t u b e AAV-OO8 F l u o r e s c e n ti n d i c a t o r t u b e AAV-OO7 K n o b ( F I L T E R ,F M , BRIGHT/DIM} Knob (FUNCTION) AAD-226 AAD.227 Knob (TUNING) AAA-065 Knob (LOUDNESS) AAD-227 Front panelassembly AN8.861 Knob (SPEAKERS) AAD.226 , UTING) K n o b( M O D E M AAD.139 ' K n o b( V O L U M E ) AAB-238 Knob (BASS,TREBLE, TURNOVER) AAB-239 Woodencover AMM-087 TONE,ADAPTOR,knob (POWER, D U P L I C A T ET, A P EM O N I T O R ) AAD.139 K n o b( B A L A N C E ) AA8-239 Front View with PanelRemoved Lamp with wires AEL-069 P u s hs w i t c h ( B R I G H T / D l M ) ASG-230 Lamp with wires AE L-095 Dual push switch ASG-229 Lamp with wires AEL-069 Lamp with wires AEL-047 P h o n ei a c k ( P H O N E S ) AKN-O30 Tuning shaft assemblY AXA-260 P u s hs w i t c h ( L O U D N E S S ) ASG-230 Leverswitch ( M U T I N G- 2 O d B } ASK-152 R e m o t e s w i t c h ( S P E A K ER S ) ASX-137 , AL e v e r s w i t c h ( P O W E R ) -nsr-soz Slide rotary switch ( B A S ST U R N O V E R } ASE-125 2 - g a n gv a r i a b l e r e s i s t o r ( B A S S ) ACT-134 L e v e rs w i t c h ( T O N E ) ASK.152 2 - g a n gv a r i a b l er e s i s t o r ( T R E B L E ) ACT-134 Sliderotaryswitch (TREBLETURNOVER) ASE-126 4 - g a n gv a r i a b l er e s i s t o r ( V O L U M E ) ACW-304 L e v e rs w i t c h ( M O D E ) A S K . 15 2 v a r i a b l er e s i s t o r ( B A L A N C E ) ACT-133 Remoteleverswitch (TAPEMONITOR) ASX.131 R e m o t e l e v e rs w i t c h ( A D A P T O R , D U P L I C A T E ) ASX.128 Rear PanelView T e r m i n a l( I N P U T ) AKB-064 m i n a l ( P R E A M P O U T / P O W E RA M P l N ) AKB-063 Bar-antenna ATB.624 T e r m i n a l( A M S T E R E O O U T ) AKB-076 AK TE e r- 0 m5i 4 n a l( S P E A K E R S ) -, A I AC socket (AC OUTLETS) AKP-041 I T e r m i n a(iA N T E N N A I AKA-o13 16 AC power cord ADG.O29 Terminal (TAPE, ADAPTOR) AKB-063 r s)<-39clct c Top Viw S p e a k e r st e r m i n a l a s s e m b l y GW3-222 R e c t i f i e ra s s e m b l y AWR.211 E q u a l i z e ra s s e m b l y AWM-226 Electrolytic capacitor 15 . O 0 0 pF , 7 1 V ACH-210 Poweramplif ier assembly AWH-097 Detector assembly GWX.463 Tuner assembly GWE-132 f Indicatorassembly AWV-OO8 \ Lamp socket AKK-OO5 Lamp (wedge typel AE L.029 /r \t"Bottom View r t;! I I Tuner assembly GWE-132 T o n e a m p l i fi e r a s s e m b l y GWG-140 7. DIAL CORD STRINGING 1 . Removethe wooden cover and the front panel. 2 . Turn the tuning capacitor shaft fully clockwise. 3 . Fix the tuning drum to the tuning capacitor shaft so that the set-screwis uppermost. Tie one end of the dial cord to the spring. 5 . Pass the cord through the cutout section in the tuning drum. Wind it ll2 turn around the tuning drum, and then take it over pulleys A, B, C, D and E in that sequence. o . Wind the cord around the tuning shaft 3 times. Passit over pully F, wind it around the tuning drum 2 times, and finally tie it to the spring so that it is tensioned. 4 7" Tum the tuning shaft and check that the cord movessmoothly. Cut off any excesscord. 8. Tum the tuning shaft counter-clockwiseas far as it will go. 9. Align the dial pointer with the starting point of the dial scale (third division from the left), and then passthe cord over it. 10. Check that the dial pointer is in line with the starting point of the dial scale. 11. Finally apply the locking paint to the knot of the cord and the dial pointer connection. 12. If the tension of the cord is weak, move the springto the projection B. S p r in g T u n i n gd r u m Tuningcapacitor T u n i n gd r u m B T u n i n gs h a f t E \ D D i a lp o i n t e r 1A Dial pointerconnection sx-3s|clcl 8. ADJUSTMENTS 8.1 AUDIOSECTION PowerAmplifier Turn VRS, VR5 (L) and VR4, VR6 (R) fully around in the counter-clockwisedirection, but set VR1(L) and VR2(R) to the center positions. Without any load or input signal,tum the POWER switch ON. o DC Balance 1. Adjust VR1(L) for 0V(to within t30mV) betweenterminal No.30 and ground. 2. Adjust VR2(R) for OV(to within t30mV) betweenterminal No.29 and ground. o Idle Cunent 1. Adjust VR3 (L) for 56mV between terminals N o . 1 2 ( + )a n dN o . 1 1 ( - ) . 2. Adjust VR4 (R) for 56mV between terminals N o . 9 ( + )a n d N o . 1 0 ( - ) . 3. Adjust VRb (L) for 70mV between terminals N o . 1 2 ( + )a n d N o . 1 1 ( - ) . 4. Adjust VR6 (R) for 70mV between terminals N o . 9 ( + )a n d N o . 1 0 ( - ) . Output PowerIndicatorCalibration 1. Apply a IkHz signal to the POWER AMP IN terminals (or any other input power amplifier input terminals). 2. Adjust the level of this input signal so that the voltage on the output terminals (SPEAKERS) read 8.95V(rms). 3. Adjust VR1(L) and VR2(R) so that the output power indicator read 10 watts. Powertransformer lndicator assembly V R s V R 3V R 1 vR2 VR4 VR6 r zir 3ozgr o 'g F i g . 8 - 1 P o w e r a m p l i fi e r a d j u s t m e n t s 19 8 . 2 T U N E RS E C T I O N FM Tuner o Connect the FM SG (FM signal generator)to the FM ANTENNA 300Q terminalsvia a 300O dummy antenna. o Switch the FUNCTION selectorto the FM position, the FM MUTING OFF switch to the OFF position. o L5 and L6 are coreless coils which may be adjusted by extending one turn of coil out towardstuning capacitor(seeFig. 8-2). 1. Set the SX-3900 dial pointer to a frequencyin the 106MHz region so that there will be no input signal. 2. Rotate the N core of T2 so that the voltage between no.B and no.7 terminals on the tuner assemblyis reducedto DC 0V. 3. Next tune the dial pointer to 106MHz, and set the FM SG outPut to 106MHz, 60 to 80dB (modulation - 40OHz,t71kHz deviation). 4. Adjust TC1 so that the voltage betweenno.8 and no.7 terminals is reduced to DC 0V and maximum readingof the SIGNAL indicator. 5. Then tune the dial pointer to 90MHz, and set the FM SG output frequencyto 90MHz. 6. Rotate the L8 core so that the voltage between no.B and no.? terminals is reducedto DC 0V and maximum reading of the SIGNAL indicator. 7. Repeatsteps3 to 6 above. 8. Reset the FM SG output level to 20 30dB' and adjust "1C2,"1C3,TC4 and T1 at 106MHz, and L2, L5 and L6 at 90MHz in the samemanner as described in steps 3 to 7. These adjustments will ensure optimum sensitivity between the two extreme frequencies. 9. Retune to a position with no input signal. 10. Rotate the A core of T2 so that the voltage between no.8 and no.7 terminalsis reducedto DC OV. 11. Set the FM SG output to 98MHz and 60dB (modulation - 4O0Hz, x7lkHz deviation), and tune the SX-3900 to this position (fine adjust the tuning knob to ensure a DC 0V reading betweenno.8 and no.7 terminals). 12. Then rotate the B core of T2 to reducedistortion in the demodulator output (TAPE REC terminal) to minimum. 13. Repeatsteps9 to 12 aboveuntil both specifications are satisfactorilYmet. 14. Set the FM SG output to 98MHz and 60dB, and tune the SX-3900to this position. 1-5.Adjust VR2 so that the SIGNAL indicator (5-point display)reads"5". 20 16. Turn the FM MUTING OFF switch to the ON position, and set the FM SG output level to 20d8. 17. Adjust VR1 to bring the input level to the startingpoint of the muting operation. MultiPlexDecoder o Connect the MPX SG (FM multiplex generator) to the FM SG externalmodulator terminal. o Set the FM MUTING OFF switch to the OFF position. 18. Set the FM SG output to 98MHz and 60dB (unmodulated), and tune the SX-3900 to this position (fine adjust the tuning knob to ensure a DC 0V reading between no.S and no.7 terminals). 19. Adjust VRb to obtain a 76kHz signalat terminal no.6. 20. Set the FM SG output level to 60dB, and the modulation mode to external. Then with the MPX SG, set Main off, and pilot signal to t7 .lkHz deviation. 21. Adjust VR4 to reduce leakageof the 19kHz pilot signal (in both channels)to a minimum (at TAPE REC terminals). 22.Set the FM SG output level to 80dB, the MPX SG Main to 1kHz, L+R to t67.1kHz deviation, and pilot signalto !7 .1kHz deviation. 23. Rotate the T1 core around by up to 90' in either direction to reduce the demodulator output (TAPE REC terminals) distortion to a minimum. 24. Then set the FM SG output level to 60dB, the MPX SG Main to 1-kHz,L (or R) to 133'75kHz deviation, and pilot signal to x7.1kHz deviation. 25. Adjust VR4 to reduce crosstalkbetweenL and R channelsto a minimum. sx-3900 Crystal Detector o Set the FM MUTING OFF switch to the OFF position. 26. Set the FM SG output to 98MHz and 60dB (unmodulated),and tune the SX-3900to this position (fine adjust the tuning knob to ensure a DC 0V reading between no.S and no.7 terminals of the tuner assembly). 27. Rotate the B core of T201 to obtain a reading of DC 0V (within r30mV) between terminal no.9 and ground. 28. Set the FM SG modulationto 40OHz,x7lkHz deviation. 29. Rotate the A core of T201 to minimize AC signallevel betweenno.9 and ground. A I f f i t rh ffi r- ffi |:I Fig.8 2 A d j u s t m e n to f t h e t u n i n g c o i l s AC voltmeter D i s t o r t i o nm e t e r @rr L2 T o T A P ER E C @ terminal Oscilloscope ?,)-, vR2 TC4 TC3 TC2 l@++-A T2t^]l l_9-D T u n e ra s s e m b l y M P X s i g n a lg e n e r a t o r s--8 0--7 F M s i g n a gl e n e r a t o r To FM ANTENNA 3 0 0 S 2t e r m i n a l s . OD) I N ( E X TM Fig.8 3 FM tuner adjustment FrequencyDisplayCircuit o The counter IC (PD5009) has been designedto match FM ceramic filter IF offset (caused by displacement of the central frequency) by combination of the inputs (of H or L level) applied to pin nos.3 & 4. The matchingIF offset in the SX-3900 is determined accordingto the combinationsof connectionsand disconnections between the JP14 and JP15 jumper wires in the equalizerassembly(AWM-226). Check that the combinations shown in the table below have been followed for the corresponding grades of FM ceramic filters F1-F3 (5 ranks - color coded). PD5009 F M c e r a m i cf i l t e r s (F1-F3) Pin no.3 Red Bl u e Gray Orange Brown If the SX-3900 frequency display reads 97.95MHz or 98.05MH2 when a 98.00MH2 signal is applied to the receiver, adjust TC1 so that the displayreads98.00MH2correctly. If an accurate 98.00MH2 input signalsource is not available, tune the receiver to the nearest known broadcasting station in the 98MHz region, and check that the station's frequency is correctly displayed, adjusting TC1 if necessary. AWM-226 Pin no.4 H H L L H ; H H H JP14 JP15 Cut Cut Connecl Connect Cut Co1 n e c t Cu Cu Cu Cu L=OV JP T;rl B _/ .T_T :\ -rn I JP I n d i c a t o ra s s e m b l y Equalizer assembly @ o o g AD @ F i g . 8 - 4 A d j u s t m e n t o f f r e q u e n c yd i s p l a y @ six-39ocl AM Tuner o Connect the AM SG (AM signal generator)to the AM ANTENNA terminal via 1kQ resistor' o Switch the FUNCTION selectorto the AM position. 1. Set the SX-3900 dial pointer to 600kHz, and the AM SG output to 600kHz, 100d8 (modulation 400H2,3O%). 2. Adjust the core of T3 to maximum demodulated output (at TAPE REC terminal). 3. Then set to 1400kH2, and set the AM SG output frequencyto 1400kHz also. 4. This time adjust TC6 to obtain maximum demodulatedoutput (at TAPE REC terminal). 5. Set the SX-3900 dial pointer to 600kHz, and the AM SG output to 600kHz,30d8. 6. Adjust the core of T3 to maximum demoduIated output (at TAPE REC terminal). 7. Then set to 1400kH2, and set the AM SG output frequencyto 1400kH2. 8. Adjust TC6 to obtain maximum demodulated output (at TAPE REC terminal). 9. Repeatsteps5 to 8 above. l-0. Set the SX-3900 dial pointer to 600kHz, and the AM SG output frequencyto 600kHz. 11. Slide the bar-antennacoil along the core to find the position which gives maximum demodulated output (at TAPE REC terminal). 12. Tune to 1400kH2, and set the AM SG output frequencyto 1400kH2. 13. Adjust TC5 to obtain maximum demodulated output (at TAPE REC terminal). 14. Repeatsteps10 to 13 as above. 15. Tune to 600kHz, and set the AM SG output frequencyto 60OkHz. 16. Adjust T4 and F7 to obtain maximum demodulated output (at TAPE REC terminal). Oscilloscope Bar-antena AC voltmeter To TAPE t e r mi n a l A M s i g n a lg e n e r a t o r To AM A N T E N N A1 k f ) r e s i s t o r terminal Fig. 8-5 AM tuner adjustment 9 . S C H E M A T I CD I A G R A M ExternalAppearanceof Transistorsand lCs 2SA905 2SC 91 5 2SA726S Lot No 2SK34 Lor No---..Jri---fl C) hrr l$ hre ++l ryoe No ;iiJ PA3007-A ..,*"-K) I I D! l_r"o. 'o"-]$Jo/ i/|\\ d lJ\\ E 'Lot - 2sA912 2SC1885 ? n \r^'. \qil,,. \ x${a''rl -FsZ D 3SK73 No Loi No Type No ", / il\ il|\ E Ll l l c u 333#3f zsc177sA ' %-A(ll Type No\ ,Lot No -t oss - HA1197 H A l 2 0 10 "Aruln+A fi{+{il++ilfl +{ 2SA979 2S8682 Type No 2sK168 i^...\ -"0"^"" Jl\-I'l I'] Lot No Lo,No \rfll N r,,.-\ffpf 2SA1076 25C2526 r-ot'o il\/t'l ;!u zSC1384 PA4006-A At'0"*-{i_\ n"..--ltn]-l f.- "'*>ffi$.-'. -l .o, "o---tl$J--t'0. *o }K / il\ E UII C 2SC461 2SC535 25C2575 F.- ) r-otno-_{$l I i lLL-l-l-rYPe No ^*-)\P ilil\ rype No c--F\m I at r' No _ Lot l]ll\ 2sA7so 2SC1400 H412017P Nr f nr\ I <^s \ l l 6 Dot *r\ l*\\4/rYe" "-_'-,-'rsN I }|iPl-t---.o, B U \ \ c u E U 2SD313P ^..->f;i"/ iJ ll \\ a q l l c u ilu \iU il tl B v N" "o TA7318P Type No- t l Lot No PD5009 e Lot No 2SA9o4A 2SC1914,A 5ut,r h\ 2SD313 N ) r-"tr'r"--ld lf l I lN tffi r,*''----\Ul l/ ii IHr /i il\\ l/lt\\ a u l l c l l 24 Q$" 2SC1906 - a .nj44 IIJII\J|// / !\ Bull 2sAe78 ,i"rr* 2SA1100 5 .",,n"ffi ull/ a2 2SA985A ,rO.""Nl t*\t I ., " * * = - S'oss HAl 201 NJM4558DV Type No rC\Yl ,ro"^o_ft\yl n,rfiffpl--rot.,o il\/tl sltl M54451P t 4 JiiniJ[,J], rM#+++# H ) 11. PARTSLIST NO?ES: c W'henordering resrslors,first conuert resistanceualuesinto code form as shown in the follo w ing examples. Ex. 1 \Yhen there ere 2 effectiue digits (any digit apart from 0), such as 560 ohm a n d ' 1 7 k o h m ( t o l e r a n c ei s s h o w n b y J = 5 % , a n d K : 1 0 o / " ) . , 5 6 x 1 0 ' 5 6 1. . . . . R D t / a PtSr 6 n J 560a ,17ksL SA B J 4 7 x L U ' 4 7 3 . . . . R D I / n PA 05'2 0R5.. . RN2HOEtrK 1r) 010 nslP OEO 1{ Ex. 2 When there are 3 effectiue digits (such as in high precision metal filnt resis tors). 5.62kst o 562 x 10' 5 6 2I RNI/aSR tr6trtrr I'he L marh found on some componenl parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of id e n t ic a I d esigna t ion. Parts Miscellaneous Part No. SEMICONDUCTORS Part No. 25C2526 2 S A 10 7 6 Symbol & Description o1-o4 o5-08 FUSES Part No. Svmbol & Description I nrr-ros FUl FU2 F U 3 ,F U 4 r'i.AEK-1o2 A n er - r o o 1OA 2.54 1A LAMPS Part No. A EL-029 A EL-069 A EL-095 AEL.O47 A E1 . 0 7 5 AEL-065 Symbol & Description PLl-PL3 L a m p ( w e d g et y p e ) P L 4 , P L 5 , P L 7 , P L 8 L a m pw i t h w i r e s PL6 Lamp with wires PL9.PL10 Lampwith wires P L 11 Lamp with wires PLl2 L a m pw i t h w i r e s PartNo. Symbol & Description f, nsr-soz s17 A S X . 12 8 ASX.131 GWG-140 GWS-221 AWH-097 AWR.21O GW5-222 T o n e a m p li f i e r a s s e m b l y S w i t c ha s s e m b l y P o w e r a m p l i fi e r a s s e m b l y P o w e rs u p p l y a s s e m b l y S p e a k e r tse r m i n a la s s e m b l y GWS-223 GWK.146 AWR.211 Switch assembly H e a d p h o n ejsa c k a s s e m b l y R e c t i f i e ra s s e m b l y OTHERS PartNo. Symbol & Description .41ncc-oot i\ 4rr-676 1, ntt-ozs C1 T1 T2 T3 ATB-624 A nrp-o+r i\ noc-ozs AKB-076 AKH-O1O AKK-O05 AKM.OO4 caMA 224K 250 SWITCHES L e v e r( P O W E R ) R e m o t e l e v e r( A D A P T O R , D U P L I C A T E ) R e m o t e l e v e r( T A P E M O N I T O R ) Part No. GWE.132 GWS-220 GWX-463 AWV.OOS AWM-226 35 Symbol & Description T u n e ra s s e m b l y Switch assembly Detectorassembly I n d i c a t o ra s s e m b l y Equalizea r ssembly C e r a m i c c a p a c i t o r 0 . 0 1/ 2 5 0 V Powertransformer Powertransformer B a r - a n t e n n aa s s e m b l v A C s o c k e t( A C O U T L E T S ) AC power cord T e r m i n a l( A M S T E R E OO U T ) T r a n s i s t o rs o ck e t Lamp socket J u m p e rp l u g c 2 ,c 3 (GWE-132) Parts List of Tuner Assembly CAPACITORS Part No. P . C .B O A R DA S S E M B L I E S Symbol & Description Symbol I Description ACK-034 ACM-OO6 VC TC1 50 C C D C HO T O D c c D c H 0 1 0 c5 0 ccDcH 040c 50 c c D c H 1 2 0 J5 0 c c D C H 1 5 0 J5 0 c50 cl6 cl4 c11 wzl T u n i n gc a p a c i t o r C e r a m i ct r i m m e r Symbol & Description Part No. 1\ Rozevr rrr L R N % P OD ! D ! F R 1 - R 1 1 , R 1 3 ,R 1 5 - R 2 2 , R 2 4 - R 2 9 , R31-R45, R47-R49, R52-R63, R65, R 6 7 , R 7 0 - R 1 2 3 , R 1 2 5 ,R 1 2 8 - R 1 5 2 R12,R46,R126 R50,R51 R N % S O! ! ! N F R30 RD%PM !!! c20 Symbol & Description Part No. J ccDcH 330J 50 C C D C H 1 0 1 J5 0 ACG-018 C C D L H O S O D5 0 C C D R H 1 5 O J5 0 c52 c19 c11 C C D U J 1 2 O J5 0 C C D X L O B O D5 0 CCDSL 39OJ50 c c D S L 1 0 1 J5 0 C C D S L 1 5 1 J5 0 c 1 , c 8 , c 10 c89 c75 c24, C49 c 3 4 ,C 3 5 C K D Y B 1 O 2 K5 0 CKDYB 122K50 CKDYF 1032 50 c 1 5 , c 6 7 , C 6 8 ,C 8 2 ,C 9 1 c99 c 2 , c 5 , c 6 , c 1 3 , c 2 2 , c 2 3 , C 2 5 ,C 3 2 , c38, C41,C42,C44,C45,C81,C86, c 8 7 , C 9 0 ,C 9 2 - C 9 5 ,C l 0 i , C l 0 7 3SK73 2SK34 2 S K 16 8 2 S C 19 0 6 2SC535-A o1 02 0 3 , 0 15 Q4 o5 CKDYF 4]32 50 c 2 6 - C 2 9 ,C 3 1 ,C 3 7 ,C 3 9 ,C 4 0 , c46-C48, C74,C96,Cl 00, c104-c1 06, c 10 8 c18 c9 H A 12 0 1 NJM4558DV PA3007-A P44006-A HA1197 06, 07, 09 o8 010 011 412 CGB R68K 5OO CGB R91J5OO ( C G B R 9 1K 5 O O ) C e r a m i c3 9 0 p / 5 0 V SEMICONDUCTORS Part No. Symbol & Description corvlA 153K 50 COMA 473K 50 C O S H3 3 1 J 5 0 cosH 751J 50 c o s H 15 2 J 5 0 c102 2 S C 19 19 25C2515 (2SC945A) 013 014,016-021,a24-416 c88 c 5 5 ,C 5 7 c 5 9 ,C 6 0 2 S A 110 0 (2SA733A) o22, o23, o28-o35 o2l c 10 3 c 6 3 ,C 6 4 ,C 7 0 , C t I c65, C66 c 6 1 , C 6 2 ,C t 2 c79. C98 H A 1 2 0 10 CEANL R22M50 CEANL O1!M 50 CEANL 4R7M 50 C E A O l O Ms O L CEA 3R3M 50L MZ.061 D 1 ,D 2 CEA4R7M sOL C E A l O O Ms O L CEA 22AM 25L C E A 4 7 O M1 O L C E A 1 0 1 M1 O L c91 c 3 3 , C 4 3 .C 5 6 ,C 6 9 ,C 8 5 c73 c80 c30, c76, c71 C E A 1 O 1 M2 5 L C E A 2 2 1 M1 6 1 CEA331M1OL C E A 4 7 1M 1 6 L CEA 47OM25L c36, C83,C84 (wz-061) tJt333 D 3 , D s - D 17 11s24731 1SV69-03 D18 C O I L SA N D F I L T E R S Part No, Symbol & Description c54 c 5 1 ,C 8 5 C 3 ,C 4 ,C 7 8 ATC-097 ATC-099 Arc-o72 L4, L7, L9-L13, Ll5, 116 C h o k ec o i l F M a n t e n n ac o i l L2 FM RF coil L5, L6 F M o s c .c o i l L8 RESISTORS When ordering resistors,conuert the resistanceualue itto code form, and then rewrite the part no. as before. Part No. Symbol& Description ATE-OO8 ATE-045 ATB.063 ATB-069 ATF-104" T1 T2 T3 f4 F1-F3 Note 36 r24-O28 L t z FM FM AM AM FM IFT DET o s c .c o i l lF coil c e r a m i cf i l t e r c92-048 c92-O49 ACP-056 ACP-0s5 ACT-133 V R 1 ,V R 3 VR2 VR4 VR5 VR6 S e m i - f i x e d( 4 7 k - B ) S e m i - f i x e d( 1 0 k - B ) S e m i - f i x e d( 2 2 k - B ) S e m i -ifx e d ( 6 . 8 k - B ) V a r i a b l e( B A L A N C E ) T h e F M c e r a m i cf i l t e r s ( A T F - 1 0 4 , s y m b o l n o s . F l - F 3 ) i n t h e t u n e r a s s e m b l v( G W E - 13 2 ) h a s b e e n s e l e c t e do n t h e b a s i so f their respective lF offset values (the degree of displacement f r o m t h e c e n t e r l F ) . F i l t e r sa r e g r a d e di n t o 5 r a n k s ,t h e s eb e i n g , r a y , b l u e ,a n d i d e n t i f i e db y c o l o r c o d i n ga t t h e t o p ( r e d , o r a n g e g b r o w n ) . W h e n r e p l a c i n gf i l t e r s , a l w a y s u s e f i l t e r s o f t h e s a m e ACW-304 VR7 V a r i a b l e( V O L U M E ) colorcode. W h e n p l a c i n g o r d e r s f o r t h e s e f i l t e r s , d e s i g n a t et h e g r a d e ( c o l o r ) a sw e l l a st h e p a r t n o . sx-39clcl Part No, ATF-073 ATF-105 ATF-038 Symbol & Description SEMICONDUCTORS F 4 ,F 5 F6 F7 Part No. F M l o w p a s sf i l t e r A M c e r a m i cf i l t e r AM lF filter PartNo. Symbol & Description A S X . 13 3 A S X - 13 4 A S X - 13 O ASK.152 S1 52 53 54. S5 R e m o t es l i d e( T A P E y I O N I T O R ) R e m o t es l i d e( D U P L I C A T E ) R e m o t es l i d e( A D A P T O R ) Svmbol & Description Part No. A S K - 15 2 A S E . 12 5 ASE-126 51 52 53 L e v e r( T O N E ) Slide rotary (200/400) Slide rotary l2Kl4Kl L e v e ri | V O D E ,M U T I N G ) Parts List of Switch Assembly(GWS-221) OTHERS Symbol & Description Part No. T e r m i n a l( A N T E N N A ) T e r m i n a l( T A P E , A D A P T O R ) A K A - O , I3 AKB-063 (GWS-220) PartsList of Switch Assembly Part No. Symbol & Description ASG-230 J c o M A 4 7 3 K5 0 C C D S L1 5 1 J5 0 P u s hs w i t c h( L O U D N E S S ) 56 R 3 0 1- R 3 0 6 c 3 0 1 ,c 3 0 2 c303, c304 PartsList of Tone Amplifier Assembly(GWG-140) CAPACITORS Part No. Symbol & Description c c D S L 1 0 1K 5 0 ccDSL 470K 50 c c D S L 4 7 1K 5 0 coMA 332J 50 COMA 123J50 c5, c6, c1 1, C12 C3, C4 c 1 3 ,C 1 4 coMA 124J50 CEANL R33M 50 C E A N L O l O M5 0 C E A N L l O O M5 0 C E A N LO R l M 5 0 c25, C26,C29,C30 c 1 5 ,C 1 6 ,C 1 9 ,C 2 0 , 34 c 1 7 ,C 1 8 ,C 2 1 , C 2 2C, 3 3 C c35, C36 c 3 7 ,C 3 8 C E A 4 7 O M2 5 L C E A 4 7 O M5 O L CEAlOiM 1OL CEANL4R7M 50 c9,c10 c39-C42 C7, C8 c1, c2 all r1a c23, C24,C27,C28 RESISTORS When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before. Part No. Symbol& Description Note: ACT-134 R D % P M! D ! HA120i7P SWITCHES SWITCHES RDTaPM D!! Symbol & Description J SWITCHES Part No. Symbol & Description ASG-229 ASG-229 ASG-230 S4 JO P u s h( F I L T E R ) P u s h( F M M U T I N G O F F ) P u s h( B R I G H T / D l M ) PartsList of PowerAmplifier Assembly(AWH-097) CAPACITORS Part No. Symbol & Description C E A N L4 R 7 M5 0 C C D S L2 2 1K 5 0 C C D S L4 7 O K5 0 ccDSL 470J50 c c D S L 3 9 0 K5 0 c o M A 3 3 2 K2 5 0 I c c o s r 1 0 1 Ks o o C E A N PB 2 2 M5 0 ACG-009 CKDYB 472K 50 c o M A 8 2 3 K5 0 C E A4 7 1 M6 L C E A1 0 1 M2 5 L RESISTORS cl13,Cl14 , 1 2 1, C 1 2 A c 1 2 1, C 1 2 2 C c 12 9 ,C 13 0 C 1 3 1 - C 1 3 4C e r a m i c 0 . 0 4 7 1 1 5 0 V c 13 5 ,C 13 6 c 13 7 ,C l 3 8 c 13 9 c140 N o t e : When ordering resistors, conuert the resistanceualue into code form, and then rewrite the part no. as before. Symbol& Description PartNo. V R 1 ,V R 2 V R 3 ,V R 4 V R 5 ,V R 6 ACP-035 ACP.O19 ACP-302 R D % P MI l A c101,c102 c 10 3 , c 10 4 c 10 5 - c 1 0 8 c109,c110 cl11,C112 J S e m i - f i x e(d3 3 0 k - B ) S e m i -i xf e d( 1 0 0 - B ) S e m i - f i x e(d1 0 0 k - B ) , 11 6 , R 1 0 1 - R 1 0 8R, 111 , R l 1 2 ,R 1 1 5 R R119R , 120F . j 2 5 , R 1 2 6 ,R 1 4 5 ,R 1 4 6 , R 1 4 9 - R 1 5 2R, 1 5 7 R , 1 5 8 ,R 1 6 7 - R 1 7 0 , , 199 R 1 7 5 - R 1 8 2R, 1 9 1 - R 1 9 4R, 1 9 7 R , REBLE) VR1, VR2 V a r i a b l e( B A S S T R3-R40, R43,R44 37 Symbol & Description Part No, J R D T a P M F! ! ! RSlP !tr! J R D % P SI N I J a RNlH !!t] K I nsznrn! K t+ A ncru-t R 1 0 9 ,R 1 1 0 ,R 1 1 3 ,R 1 1 4 ,R 1 1 7 ,R 1 1 8 , R123,R124,R|27-R142, Rl47 , R148, R 1 5 3 - R 1 5 6 , R 15 9 - R 1 6 4 , R l t 1 - R 1 7 4 R 1 2 1, R 1 2 2 , R 1 4 3 , R 1 4 4 R196 R 1 8 7 ,R 1 8 8 R 1 8 9 ,R 1 9 0 R 1 8 3 - R 1 8 6 W i r ew o u n d ( t w i n ) O.4l l5W x 2 SEMICONDUCTORS Symbol & Description Part No. 0 1 0 1 ,0 1 0 2 2 S C 17 7 5 A - E * o r 2 S C 17 7 5 A - F " 0 1 0 3 ,0 1 0 4 2 S A 9 7 9 - F* or 2SA979-G* " h f e o f 0 1 0 1 a n d O 1 0 2 s h o u l dh a v et h e E - r a n ki,1O 1 0 3 a n d O 10 4 h a v et h e F - r a n k . * h f e o f O 1 0 1 a n d O 1 0 2 s h o u l d h a v et h e F - r a n k it 0 1 0 3 a n d Parts List of Indicator Assembly(AWV-008) CAPACITORS ACM-010 COMA 473J 50 C E A N L O l O M5 0 CEANL4R7M 50 coMA 332J 50 TCl C E A 4 7 O M1 6 L C E A 1 O 1 M2 5 L CKDYF 1032 50 CKDYX 473M25 CEA471MlOL c9 c10 0 1 0 5 ,0 1 0 6 0 1 0 7 ,o 1 0 8 raal 2SA750 o109,o110 o 1 11 , 0 1 1 2 ,0 1 1 7 , 4 1 1 8 2 S C 14 0 0 2SA905 2SA904A 2 S C 19 14 4 25C2575 0 1 1 3 ,0 1 1 4 , 0 1 1 9 , 0 1 2 0 0 11 5 , o 11 6 0121,4122 a123,4124 a 1 2 5 ,0 1 2 6 ,o ' , 3l 7 - o 1 3 9 ol tr ccDcH020c50 CKDYF 473250 c c D S L 1 0 1K 5 0 C E A2 2 1 M1 6 L C E AO l O Ms O L RESISTORS 2 S C 13 8 4 o140 MZ-061 D101-D106 C3, C4 c5, c6 c 7 ,c 8 c12, c14, c17-c21 , c28 c 1 3 , c 1 5 , c 2 5 - c 2 7 , C 2 9 ,C 3 0 c 16 , C 3 2 ACP-OO7 RD%PIVI l!tr c24 c31 c 3 4 ,C 3 6 LJ3 c31-c43 N o t e : When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before. Symbol& Description PartNo. 0 1 3 3 ,o 1 3 4 25C2275A-o** or 25C2215A-P'* o 1 3 5 ,o 1 3 6 2SA985A-O** or 2SA985A-P"* * * h f e o f O 1 3 3 - 0 1 3 6 s h o u l dh a v et h e s a m ev a l u e . C e r a m i ct r i m m e r c c D c H 1 0 1K 5 0 0 1 0 4 h a v et h e G - r a n k . 25C2291 2SA750 (2SA7265) Symbol & Description Part No. J VR1,VR2 Semi-fixed R1-R33. R35-R63 SEMICONDUCTORS PartNo. T47318P-A H A 12 0 10 M54451P PD5009 Symbol & Description o1 02, 03 o4 uc 06-010 (2SC945A) 2SC461-B 2-1K261 011 D 1- D 4 (wz-061) STV2H 10E2 1S 15 5 5 ( 15 2 0 7 6 ) D 1 0 9D, 1 1 0 D 11 1 , D 11 2 ,D 1 1 7D, 1 1 8 D113-D116 15247 1 MZ-150 , 132D , 133 D129D , 130D D 13 1 (wz-150) TH103-2 Th101.Th102 Part No, Symbol & Description RL1 ASR.068 PBZ3OPO6OFMC r24-O28 AAV-OO7 L1, L2 V1 AAV.OOS A S S - 0 11 VCZ3OPOSOFMC v2 X1 C h o k ec o i l F l u o r e s c e nitn d i c a t o rt u b e F l u o r e s c e nitn d i c a t o rt u b e Crystal resonator Relay CAPACITORS Part No CEANL4R7M 50 CEA 47OM50L 3A Symbol & Description PartsList of EqualizerAssembly(AWM-226) OTHERS Part No. OTHERS Symbol & Description c3, c4, c29, C30 v t , v z , w t l , u t o six-39clcl Part No. Symbol & Description C E A 4 7 O M1 O L CEA471M6L C E A 2 2 O Ms O L c 19 , C 2 0 c 9 , c 10 c25-C28 C C D S L2 2 O K 5 0 ccDSL 181K50 c c D s L 2 2 1K 5 0 coMA 683K 50 coPA i22G 50 c23, C24 c7, c8 C5, C6 c21,C22 c 1 5 ,C 1 6 coPA 183G50 COPA 683G 50 C K D Y F 1 O 3 Z5 0 CKDYF 4132 50 c 1 3 ,C 1 4 c 1 1, C 1 2 c31 Part No. Symbol& Description R1-R12, R15,R16,R21-R46 R 1 3 ,R 1 4 ,R 1 7 - R 2 0 R47 SEMICONDUCTORS Part No. Symbol & Description 2SA978 2SC17l5A 2 S C18 8 5 254912 01,02 03, 04 05, 06 07, 08 1S 15 5 5 ( 15 2 0 7 6 ) D 1 ,D 2 Part No. Symbol& Description A nozpsrrrr .r A n o z p v rr r l L R D % P M! ! D J SEMICONDUCTORS Part No. 2SK34 2 5 D 3 13 P 2SC1885 254912 2S8682 (258507) Symbol & Description 01,02 UJ a4 uc vo 2SC1 9 15 2SA905 2SD33 1 25C2575 o7 o8 0 9 , o 11 010 1 Cl trRtr D l , D 11 A roez Symbol & Description s - g a n gp u s h s w i t c h ADU -ZZti 51 AKB-064 AKB.063 T e r m i n a (l I N P U T ) T e r m i n a l( P B E A l \ 4 PO U T / P O W E RA M P tN) PartsList of PowerSupply Assembly(AWR-210) KZL-140 MZ-110 ( w z - 11 0 ) MZ-130 (wz-130) MZ-177 (wz-1771 f, nrr-ozs Symbol & Description C 2 ,C 1 4 ,C 1 8 ,C 1 9C e r a m i0c . 0 1 / 1 5 0 v C 7 ,C 8 c5, c24 cl ao CAPACITORS C E A 1 O 1 M2 5 L C E A 4 7 O M5 0 L C E A 4 7 O M6 3 1 C E A 4 7 1 M6 L C E A2 2 1 M1 6 1 c16 c 1 2 ,C 1 3 c10,c11 Part No. cl7 D13 D12 Symbol & Description T1 H e a t e rt r a n s f o r m e r PBZ3OP060FMC VBZ30PO6OFMC ACG-O04 C C D S L1 0 1K 5 0 C E A l O O M5 0 L CEA 2R2M sOL C E A 4 7 O M2 5 L aaa D2-D5, D7-D1 0 D6 D14 OTHERS PartNo. CAPACITORS Part No. R 3 , R 1 6 ,R 1 7 R11,R12 R23, R24 B4-R7 R1,R2, R8-R10, R13-R15, R18-R22, R25,R26,R27 ( 152076) OTHERS Part No. c20, c21 cl5 c3. c4 RESISTORS RSlP !D! J R D % P SN l N J wJz c22 UO When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before. Note RESISTORS R D % P MN I t r J F R N % P Ol l ! t r R S 2 PD l D J Symbol & Description CEA 331M251 C E A l O O M6 3 L C E A 4 7 1 M1 6 L C E A 1 O 2 M3 5 L CEA 221M8OL When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before. Note: Part No. PartsList of Detector Assembly(GWX-463) c c D S L 1 0 1 J5 0 c c D W K 1 5 0 K5 0 C K D Y B4 ] 1 K 5 0 CKDYF 103250 Symbol & Description c201 c202 c204 c206 39 RESISTORS When ordering resistors,conuert the resistanceualue into code form, and then rewrite the part no. as before. Part No. Symbol& Description Note RD%PM!N! J R 2 0 1- R 2 0 8 CAPACITORS -B 2SC461 2-1K261 vt,vz c3, c4 A ncc-otz o201 D201,D202 OTHERS Lf, RESISTORS Part No. Symbol& Descriptiol__ =--- I ncru-oto A ncru-ozg R1 R2 Symbol & DescriPtion PartNo, ATE.O50 ASS-012* r201 X1 FM DET C r y s t a lr e s o n a t o r T h e c r v s t a l r e s o n a t o r( A S S - 0 1 2 s, y m b o l n o . X 1 ) i n t h e d e t e c t o r a s s e m b l v( G W X - 4 6 3 ) i s a v a i l a b l ei n 3 d i f f e r e n t t y p e s c o r r e s p o n d i n g t o t h e l F o f f s e t v a l u e so f t h e F M c e r a m i cf i l t e r s ( A T F - I 0 4 , s v m b o l n o s . F 1 - F 3 ) i n t h e t u n e r a s s e m b l y( G W E - 13 2 I . T h e s e mav be identified by the different colored dots (red, blue, o r a n g e ) a t t h e h e a d . W h e n r e p l a c i n g c r y s t a l r e s o n a t o r s ,c h e c k t h a t t h e m a t c h i n g r e q u i r e m e n t sl i s t e d i n t h e f o l l o w i n g t a b l e a r e met. Crystal resonator (ASS-012) Red Blue Orange F M c e r a m i cf i l t e r ( A T F ' 1 0 4 ) 0.01/150V Ceramic Electrolytic 15000/71V 0.01/125V Ceramic When ordering resistors, conuert the resistanceualue into code form, and then rewrite the part no. as before. Note: Symbol & DescriPtion Part No. Symbol & DescriPtion Part No. ACG-004 ACH-210 SEMICONDUCTORS o PartsList of RectifierAssembly(AWR-211) W i r ew o u n d 3 . 3 / 2 0 W Carbon composition 12.2Mly,wl SEMICONDUCTORS Part No. Symbol & Description A sstst A sststn D1 OTHERS Part No. Svmbol & Description A nsn-oog Araex-oot F1 Rel ay Temperature-sensitive fuse ) R e d ( b l u eo r o r a n g ea l s op e r m i s s i b l e ) Blue(or brown) O r a n g e( o r g r a y ) Parts List of SpeakersTerminal Assembly(GWS-222) Part No. Symbol & DescriPtion T e r m i n a l( S P E A K E R S ) R e m o t es l i d es w i t c h A nrr-osa A S X - 13 7 (GWS-223) Parts List of Switch Assembly Part No. Symbol & Description Remote push switch ASX-135 Jack Assembly(GWK-146) PartsList of Headphones Part No. AKN-O3O R S 2 P3 3 1J 40 Symbol & Description P h o n e . i a c k( P H O N E S ) R 1 ,R 2 ') sx-39clct 12. EXPLODEDVIEW Exterior Components a ) 4 7 L :N l-\j\ ,,P ,ngJ \-i,/ I l | I l c o NO?E'S: o Pa,rtswithout parl number cannot be supplied. o ,he [' mark found on some component parts indicates the importance of the safe.ty factor of the part. Therefore,^rnn:, ,nin"ing, be sure to useparts of identical designation. Key No. 1. 2. 3. 4. 4-1. 4-2. 5. 6. 7. B. 9. 10. Part No. DCK40P150FZK AMM_087 vBz30P080FMC AN8_861 AAD-226 AAD-227 WA92F140U100 Description Key No. part No. 1 1 Woodencover assembly F r o n t p a n e la s s e m b l y Knob A Knob B NK9OFUC AAD-139 AAB-239 K n o b ( f o r l e v e rs w i t c h ) K n o b ( B A S S ,T R E B L E , AAB-238 444_065 T U R N O V E R ,B A L A N C E } Knob (VOLUME) Knob (Tuning) 12. 13. 14. 15. Description Food vBz40POSoFMc AEC-178 vrz4opl2oF^a toot assemblv Bottom plate Interior ComPonents NO?ES: o Partswithout part number cannot be supplied' of the . in" A mark found on some component parts indicates the importance safetyfactorofthepart.Therefore,whenreplacing,besuretousepartsofidentical designation. Part No. Description GWE.132 GWS-220 GWX.463 AWV-OO8 AWM.226 Tuner assemblY Switch assemblY Detector assemblY lndicator assemblY E q u a l i z e ra s s e m b l Y T o n e a m p l i fi e r a s s e m b l Y Switch assemblY P o w e r s u p p l Ya s s e m b l Y S p e a k e r st e r m i n a l a s s e m b l Y 10. GWG.140 GWS-221 AWR-210 GW3-222 GWS.223 11. 12. GWK.146 AWR-211 Key No. 1. 2. 4. Description ASX-131 Remote switch Remotebelt Remotebelt Remotebelt C e r a m i cc a p a c i t o r ACG-001 AKP-041 ADG-029 Switch assemblY 54. /i, 55. AK8-076 ATT-676 AC socket (AC OUTLETS) AC power cord T e r m i n a l( G N D ) T e r m i n a l( A M S T E R E O O U T ) Powertransformer H e a d p h o n e sj a c k a s s e m b l Y R e c t i f i e ra s s e m b l Y F u s eh o l d e r a s s e m b l y Dial panel Dial pointer 56. I\ 57. 58. A sg. A oo. ATA-624 4rT-675 AE L-029 AEK-106 AEK-102 B a r - an t e n n a Powertrans{ormer L a m p ( w e d g et Y P e ) F u s e( 1 A ) F u s e( 2 . 5 A ) 17. 18. 19. 20. Shaft cover A Shaft cover B Sidef rame L Sideframe R P a n e lf r a m e A or. 62. 63. 64. 65. AEK-305 AEL-069 AE L-O95 AE L-047 AE L-075 F u s e( 1 0 A ) Lamp with wires Lamp with wires Lamp with wires Lamp with wires 21. 22. 23. 24. 25. C e n t e rf r a m e R e a rp a n e l C e n t e rc h a n n e l Tuner holder Heat sink holder 66. 67. 68. 69. 70. AEC-327 Strain relief P la t e Lamp socket J u m p e rp l u g Smoother 26. T r a n s f o r m e rh o l d e r S c a l eb o a r d h o l d e r L S c a l eb o a r d h o l d e r R E O h o l d e rA E O h o l d e rB 71. 72. 73. 74. 75. ABA-176 ABE-001 R e i n f o r c e dp l a t e Ground plate Acrylic board Spacer A Spacer B 76. 77. 7a. 79. 80. ABN-050 NKgOFUC wA92F140U100 wA35F100N080 AEC-525 Rod Pulleyassembly P u l l e y a s s e m b l yS T u n i n gd r u m a s s e m b l Y Tuning shaft assembly 81. 82. 83. 84. 85. BBT3OPOSOFZK vBz30P060FMC PMT3OPO6OFZK MTZ3OPlOOFZK vBz30P080FMC SPring R e i n f o r c e dc h a n n e l M o u n t i n gc l a m p L e v e rs w i t c h ( P O W E R ) 86. 87. 88. 89. 90. PMZSOPOBOFMC PMZ3OPO6OFMC VBZ40P080FMC PMZ3oP120FMC Lamp with wires AE L-065 o i Q 14. 15. lo. 28. 29. 30. 31. 32. 34. 36. Jt. JO. 40. AXA-260 4 1' 42. 43. tt 45. 42 A 46. 41. 48. 49. 50. Part No. A 51. A, 52. 7. u. A, Key No. ASK.507 ASX-128 Remoteswitch AKK-005 AKM-004 G r o u n d t e r m i n a l2 - P Lamp holder C a p a c i t o rc o v e r S p e c i a ls c r e w lnternal toothed lock washer Union nut Nylon rivet HeatSink / \ fl 11 ,.'r NO?ES: t Parts without part number cannot be supplied. c The I mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. Key No. 1. 2. 3. 4. 5. PartNo. Description VBZ3OPO6OFMC Holder VMH3OP120FMC Socket stopper 25C2526 6. 7. 8. 9. 10. 2SA1076 AEC-488 AKH-010 11. 12. 13. 14. 15. BBT3OPOSOFZK 16. W A 3 3 F1 0 0 M 1 0 0 AWH-097 VBZ30P080FMC STV2H I n s u l a t o rw a f e r T r a n s i s t o rs o c k e t Heatsink P A h o l d e rA P A h o l d e rB P o w e ra m p l i f i e r a s s e m b l y 13 . P A C K I N G \... ;w - --l \ i Parts List Part No. Description 1. 2. 3. 4. 5. AR8-354 ADH-002 AHA-247 AHC-042 AH D-756 O p e r a t i n gi n s t r u c t i o n s T-type FM antenna Sidepad I n s i d ep a c k i n g 6. AHA-251 Rearpad Key No. 40 P a c k i n gc a s e ( L / L ) SERVICE m. 5I-484016 Date: l{ovsnber, 1983 INFORMATION CDrrtoNEEFr S/G MooelrSX-J900/KU, SUgJfCf ; Addition of resistors RgnSOru: For easier Idle R200, R201 into Power Amp Assernbly. current adjustment. : (Added) ---------)100rr RDl/4PM1OlJNL PRe e: Srnvrcr lvlnruunt[ A R T - 4 5 7 ]- - - - - - S X - 3 9 0 0s e r i e s 21, 55 A p p l r c A B LS Er R t R tN o , : 3 6 0 3 6 0 1290455L- SX-39OO /KU s x - 3 9 0 0 / sc POST CFtTCEBOX 1780 LONG BEACH, CALIFORNIA 90801 P H O N E :2 i 3 1 4 2 0 - 5 7 0 0 F A X : ( 2 ' 1 3 ) 4 2 0 ' 5 9 0 2 (J-lrc) PIONEERELECTRONICS(USA INC. TECHNICIALINFORMATICNCENTER C)rqoNEEn SFSs|OOS/G The basic performanceof the S/G type is the sameas the KU type. This additionalservice manualis applicableto the S/G type, pleaserefer to the KU type servicemanualwith exception of this supplements. SPECIFICATIONS T h e s p e c i f i c a t i o nf osr S / G t y p e i s t h e s a m ea st h e K U t y p ee x c e p ft o r f o l l o w i n gs e c t i o n s ; Miscellaneous P o w e rR e q u i r e m e n t s Powerconsumption. W e i g h(tw i t h o u tp a c k a g e ) . A C 1 1 0 1 1 2 0 1 2 2 0 1 2 4(0sVw i t c h a b l e5)0 / 6 0 H 2 ."310w . 21kg (46lb5 oz) C O N T R A S TO F M I S C E L L A N E O U SP A R T S of the . The b marh found on some component parts indicates the importance parts identical of to use be sure replacing, when safety"factor of the part. Therefore, designation. SEMICONDUCTORS Part No. Description Symbol 0 1- 0 4 05-08 T r an s is t o r T r a nsi s t o r Remarks KU type S/G type 25C2526 25A1076 2>VZAZO 2 S A 10 7 6 FUSES Part No. Description Symbol J" FU1 ,\ FU2 F u s e( 1 0 A ) ,\ rus F u s e( 1 A ) F u s e( 1A ) F u s e( 5 A ) ,i).FU4 A E K - l1 O AEK-102 AEK-106 AEK-106 AEK-108 AEK.305 AEK-102 AEK.106 AEK.106 FUSe tZ.CA' Remarks S/G type KU type LAMPS Part No. Description Symbol Remarks S/G type KU type AE L-029 AE L-029 AEL.O29 AE L-069 AEL.O69 AE L-029 AEL-029 AE L-029 AE L.069 AE L-069 wires wires wires wires wires AE L-095 A E L-069 AE L-069 A E L-047 AEL.O47 AEL.Og5 AEL.069 AEL-069 AEL-047 AEL-047 Lamp with wires Lamp with wires AE L-075 AE L-065 AE L-075 AEL-065 PL1 PL2 PL3 PL4 PL5 L a m p ( w e d g et Y P e ) L a m p { w e d g et y p e ) L a m p ( w e d g et y p e ) Lamp with wires Lamp with wires PL6 PLl PL8 PL9 PLlO Lamp with Lamp with Lampwith Lamp with Lampwith P L 11 PLl2 SWITCHES Part No. Symbol A s tz t\ Description Lever (POWER) R e m o t e l e v e r( A D A P T O R , D U P L I C A T E ) R e m o t el e v e r( T A P E M O N I T O R ) L i n e v o l t a g es e l e c t o r KU type ASK-507 ASX-128 ASX.131 Remarks S/G type ASK.508 ASX-128 ASX-131 AKX.063 'u t j :i : P . C .B O A R DA S S E M B L I E S Part No. Description Symbol KU type S/G type Tuner assembly Switch assembly D e t e c t o ra s s e m b l y I n d i c a t o ra s s e m b l y E q u a l i z e ra s s e m b l y GWE-132 GWS-220 GWX.463 AWV-OO8 AWM-226 GWE-132 GWS-220 GWX-463 AWV-OO8 AWM-226 Tone amplifier assembly Switch assembly P o w e ra m p l i f i e r a s s e m b l y Powersupply assembly S p e a k e r st e r m i n a l a s s e m b l y GWG.140 GWS-221 AWH-097 AWR-210 GWS-222 GWG.140 GWS.221 AWH-097 AWR.21O GWS-222 Switch assembly H e a d p h o n e sj a c k a s s e m b l y R e c t i fi e r a s s e m b l y D e - e m p h a s ia sssembly GWS-223 GWK.146 AWR.211 GWS-223 GWK-146 AWR.214 AWS-147 Remarks OTHERS Part No. Description Symbol ac1 C e r a m i cc a p a c i t o r S/G type ACG-001 coMA 224K 250 ATT.676 4TT.675 ATB.624 ACG-001 coMA 224K 250 ATT.682 4TT-681 ATB-624 AC socket (AC OUTLETS) AC power cord T e r m i n a l( A M S T E R E O O U T ) T r a n s i s t o rs o c k e t Lamp socket AKP-041 ADG-029 AKB-076 AKH.OlO AKK.OOS AKP.O41 ADG-049 AKB.O76 AKH.OlO AKK-OOs J u m p e rp l u g AKM-OO4 AKM-OO4 c2,c3 T1 T2 T3 A A KU type PowertransJormer P o w e rt r a n s f o r m e r B a r - an t e nn a Remarks PACKING Symbol Part No. Description KU type S/G type P a c k i n gc a s e I n s i d ep a c k i n g Sidepad AHD-756 AHC-042 AHA-247 C a r d b o a r ds p a c e r Rearpad AHA-251 AHD-757 AHC-O42 AHA-247 AHB-089 AHA-251 Remarks FURNISHED PARTS Symbol Part No. Description KU type O p e r a t i n gi n s t r u c t i o n s T type FM antenna ARB-354 ADH-OO2 S/G type ARB.356 ADH-OO2 Remarks RectifierAssembly(AWR-214) FuseHolderAssembly(for S/G type) De-emphasis Assembly(AWS-I47) 50 PartsList of Rectifier Assembly(AWR-214) CAPACITORS SYmbol& DescriPtion Part No. C 1, C 2 C3,C4 C5 ACG-004 ACH-210 ACG-001 0.01/150V Ceramic Electrolytic 15000/71V 0.01/250V Ceramic RESISTOR When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before. Part No. Symbol & DescriPtion Note: ACN-019 Rl Wire wound 3.3/20W SEMICONDUCTORS Part No. J J I C I b S t c t h Symbol & Oescription D1 D2 OTHERS Part No. ASR-069 AEX-0O1 Symbol & DescriPtion RelaY F1 use T e m p e r a t u r e - s e n s i t i vf e Assembly(AWS-147) PartsList of De-emphasis Part No. 50 Symbol & Description c o s H 7 5 1 J5 0 cosH 152J50 C 1 ,C 2 c3, c4 ASH-015 51 S l i d es w i t c h -,q fir . j il '' :l . : ,. t :! ' i . rl 4-1 , Mesurc 1-chorrie, Mesuno-ku. Tokyo 153, Japen PICINEEFI ELECTFTCINIC CCIFIPCIFIATICIN U.!. FIC'NEEn ELECTFICtNIea E|5 Oxford OFive, Moonachie, New Jerlsy O7O74 U.S.A. CC'F|FigllATlClN FIC'NEEE Belgium ELECTFTCINIC IEUFICIPE N.\,. Luitl€gen-Haven I, POSO Antwerp, Auatnalia FfCINCEa ELECTRCIJ{ICa A|JaTF|ALIA FTY- L?E'. 178-184 Bounddny Road. ElFeeside. Victonia 3195,