Pioneer SX-4 Service Manual Download Page 22

Summary of Contents for SX-4

Page 1: ...NS FRONTPANE L FACILITIES PARTS LOCATION 4 PACKING BLOCKDIAGRAI 4 P C BOARDS CONNECTION DIAGRAM PIoNEEFIELECTFICINICCG F PCTF AI CTN r chome M6su o ku r a FE N ll aLaCtFCtNlce CC FIPC AATIC N 85 Oxro ct O ve Moona h e New Je sey O2O74 u s a PE illla tl CtFCtNlC IEUFC PE N V Lu haAe Haven 9 2O3o FlCrialCF lLaCTElC NlCa AUaIFIALIA F Y LYo 1 7E I A4 Aolnda y Rodd B aes de FHOTULY 1981Printed in japan...

Page 2: ...at85dBf Stereo 70d8 at85dBf Distortion at65dBf M o n o 1 0 0 H 2 0 1 5 1kHz 0 15 6kHz O 2 S t e r e o 1 0 0 H 2 0 3 l kHz 0 3 6kHz O 4o o C a p t u r e R a t i o 1 0 d 8 Alternate Channel Selectivity 400kHz 60dB S t e r e o S e p a r a t i o n 1 k H 2 4 0 d 8 30Hzto l5kHz 35dB Frequency Response 20Hzto 15kHz 0 5d8 1dB S p u r i o u s R e s p o n s e R a t i o 6 5 d 8 l m a g e R e s p o n s e R a ...

Page 3: ...ig 1 Load the batterieswith the polaritiesproperly aligned with the marks on the inside of the compartment see F is 2 Align the tab of the lid with the interlockinghole and depress the lid lightly Battery Precautions lf batteries are incorrectly used they may leakor even break open insidethe battery holder Observethe following precautionswhen insertingand replacingthe batteries 1 Always be sure th...

Page 4: ...hed TUNINGswitch This is usedto tune in broadcasting stations Whende pressed the LEDson the frequencyscalelight up in the leftward or rightwarddirection dependingon the direc tion corresponding to the part of the TUNING switch which hasbeendepressed and frequencyscanning starts TheTUNED indicator nowstarts to blink Whena stationis located the LEDsstop movingandthe TUNED indicator lights up The sou...

Page 5: ...tems ore indicdted uith the marhs qnd GENERALLY MOVES FASTER THAN Thiaclossificationehollbeodiustedb eachdietibutor because it depend on model number temperoture humidity etc Knob TUNING AAD 4OO Knob FMl AAD4O2 Knob AMl AAD403 Knob VOLUME AAB 273 K n o b I N P U T AAD 399 A r Pushswitch POWER ASG 521 Knob TAPE ADPT MONO LOUDNESSI AAD 405 Knob MEMORY STOP AAD4O4 Variable resistor VOLUMEI ACT 128 I ...

Page 6: ...ing case s 613 RearPanelView t Slideswitch AM CHANNELSTEPI ASH O15 rerminal AM STEREOOUTI AKB 76 Terminel PHONO AUX VtDEO R ECI AKB 079 Terminal PLAYI AKB 77 Top View AC socker ACOUTLETSI AKP 039 Strainreliet AEC 358 AC powercord ADG O52 Terminal SPEAKERS AKE lOI ti Fuse 5A AEK 1OA Powertransform r ATT 39 r Fuse 3Al AEKI Ol ...

Page 7: ... E S I Z E R C I R C U I T r I C M 5 4 9 2 2 P t Illt oarr Ia I r Nl M F M I P O G L D 3 5 6 d 8 A T l k H r 8 C D T O O E C I M A L O E C O R O E R FM Ail sELEcroR va vs vo Yt Y2 Y3 vi r U N E R SECTION E Q A M P FUNCTION S LECTOR I POWERSW I 1 o r r I f Fr tql lj jf FREQUENCYDISPLAY P O W E R A M P L I F I E R I O N E C O N T R O L P O W E R S U P P L Y C I R C U I T AUX Vt0 O M U T I N G C O N ...

Page 8: ...E6 P 1 C BOARDS I l2 CONNECTION I DIAGRAM 3 A B CONTROL Ass y GwX 72 Q 2 VOLUME AssV C CONTROL Ass y A D ...

Page 9: ...6 5 4 COMPLEX Ass y CONTROL Ass y awx 7 7 TC202 Qro5 o2o4 Q2r3 Q2O5 ...

Page 10: ...l e o Q 3 1 3 2 2 2 5 A 6 5 0 z s o Q 3 2 7 3 8 2 5 0 5 2 5 P iu o 5o I i r 1 f LS H d 1 il gJt bi I ii 1 t 5 16 1tf l I igu 00p400 1 iil ftr iil l h 1 rz Jnaz rg L rz ir t tt ffi I ttort rp R ow J l l ll1 1 f rp flr 1 h I t l uoo i 4n tEut t I I A lono l o 0 ll t t h q l ll ttel t ttl hpj i rx rl 5J tsa l i rr6r rt lli hl i r o 150 r l c143 t or ciir 22125 1t t tt l l R 22l Qe6 6 of rf r 1 l t 5 ...

Page 11: ...A AC 20v SOHz SWITCHED UNSWITCHED l o o w t o o w HEADPHONES JACK Ass y B q c D I SWITCH Ass y ...

Page 12: ... alternatiue semiconductors may be used and are listed in the parts list 3OOn L 750 I l2 AGRAM 3 2SC1919 2SC710 2sAz26s LotNo h E A C 22o I a l B D f I t rdl a L C H a u x v t 0 E 0 t p i N l PLAYIIN L CH ror fi5 tl T PLAYIIN R ca l I 1 1 3 2 o 2 d 1 2 NV1226 0 t a l l t s l l 0 2 5 _t ...

Page 13: ...It T at l I rt U il az I o o r c t Frt I j It ii l l f Ir r I I a i Ll qr A a zcrt a lF II I L ril t l tl l 1 r I h r D t l rori J ra Ilf l ilp Itfgi i ll IILft itE I lf_ ty_i itft ft itffi t6 i1r I L l iE i l il IPr t tl ILJ L _ u 5 r tI o4o4 zsa6a4a i I I _ _ j I I i nraoerores JAcKAss 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 3 1 6 3 5 5 i r c I I I D r 3l r s r M U I l ...

Page 14: ... W 5 lorera ce un otheBie nord k k M M Q I F i 1 G l 2 K 1 M r 2 0 r c r e r c Indicaid n capac y 1 F volia lvl e orhemte nord p pF Indlcatio w ho vohaqe s SV 3 V O L T A G E C U R R N T X S q n a v o o g e a w 2 0 W 8 r o u r p u l i r k H z E o c v o l r a q e l v r d n o n p u t s e a Va ue n 1 s DC vo tase ar a1d power fie I_ n ft rolnd on sode compo enr I rhe pad Theretora when reD ac nq b e ...

Page 15: ...r c r f i ffifu rn ry 3 t ffi 2sc2s62 ftt l y l n F E ill l 3ff3 ffi h e hv rvpeNo A B C L81473 M 922P LA1247 P44008 HAl 156W P TC4O69UBP PA3001 A M74LS42P ffi CoNTROL Assry B G W X 7 1 7 3 3 Ar nlj44 fteeeeeMry r______ in44 ee D 1 10 NJM4558DXC 12 1 ...

Page 16: ...pends on model number temperature humidity etc Miscellaneous Parts Mark Part No c125 C331 C332 c342 C343 c354 C355 C364 C365 c352 C353 c346 C341 c323 C324 c r 39 c140 c141 C142 c145 Ct46 c143 C1 44 C2 1t C334 C33 5 c 3 1 7 C 3 1 8 c215 C21 A C221 C222 c1 t t c2t4 c219 c221 c319 C320 C336 C339 c 1 0 3 c 1 0 9 c r 1 0 c 1 1 9 c r 2 0 c201 c202 c207 c211 C224 c226 C224 C231 C234 C325 c326 C 53 Mark S...

Page 17: ...c o i F 1 0 1 F 1 0 2 F N l c e r a m i cf i t e r F 2 O 1 A M c e r a m i c f l t e r Symbol Description R E S I S T O R S NOTE When otdering rcsistors conL ert lhe resistanceualue tnto code form ond then reuite the part no as before Symbol Descriptron t I L41241 r M54922P r r P43001 A T H A l 1 5 6 W P r i PA4008 PAO001 r r NJM4558DXC NJM4558D X 2 S C 1 9 1 9 2SC1845 r r JC501 2SC2603 A 2 S C 1 ...

Page 18: ...01 2SC2603 A o 1 3 O 1 4 ControlAssemblyB GWX 717 Dr04 Dr05 D2os D2o4 D2oi CAPACITORS l s t B o l 0 2 r KVI320A 3 D1O1 s KV1226Y D201 a 2 1K261 D 4 1 1 Mark Part No D 2 t 0 D 3 t 0 D l l t D 3 1 5 D 3 l 6 D4ro D4l Ma k PartNo D412 D415 D404 D405 Mark Part No Symbol Description CKDYF 1032 50 C103 R E S I S T O R S NOTE Whenord eringresi tors conuert the resistance Dalue into codeform and thenrewite...

Page 19: ...hen rcwite the part no as before Mark Part No Symbol Descriprion R D P MI L I J R R 3 R 6 R l 2 R 1 3 R I 5 R 2 O R25 R28 R101 R104 R108 RD PM F N lJ R29 SEMICONDUCTORS Mark Part No Symbol Description t t L 8 1 4 7 3 a 2 r TC4069U8P 03 t PD6004 05 M 7 4 L S 4 2 P o1 Symbol Osscription r r Jc501 o10 o12 o1 5 2SC2603 A 1s1555 D4 D5 D1B D20 1524131 2 1K261 D8 D17 sz o21 D6 D 101 r AEL 365 D5o1 D510 L...

Page 20: ...3 2 e EXPLI ED vrEL A A u q B o l l B C C o A ff 2 9 28 L ffi 2 D 7 7 D 3 2 1 KN Nn e 23 e 27 l ...

Page 21: ...P 039 35 AXC 013 Screw 3X10 Knob POWER Knob Screw3X6 Knob 8ASS TR EaLE EALANCEI Knob VOLUME Frontpanelassembly Display covea Knob INPUT Knob TUNIN G Knob FM Knob A r Knob N 4 EMORY STOP Coiledspring CStypewasher Screw 4X8 Power transformer Screw3X6 Nut M9 Nut Controlassembly Push switch POWER Ceramic capacitor Fuse 5A FU102 F U103 Screw3X8 Fuse 3A FU101 Controlassembly B AC socket ACOUTPUTS Batter...

Page 22: ...et the modulation to a Main kHzlL P l 67 5k l2 deviation Pilot 19kHzl 7 oklHz deviation Step FM SG 400H2 t75kHz deviation Frequency Level sx 4 STATION CALL switch Adjustment point Adjustment procedure 1 No signal Pushthe 1 L103 7 2V DC betweenterminal no 36 and ground 2 No signal Pushthe 6 TC103 25V DC betweenterminal no 36 and qround Repeat steps l and 2 until both lecifications are col 4 noot u ...

Page 23: ...ulation sx 4 STATION CALL switch Adjustment point Adiustment procedure Frequency Level 1 No signal Pushthe 1 L203 2V DC betweenterminal no 36 and ground No signal Pushthe 4 TC202 25V DC between terminal no 36 and ground J Repeatsteps1 and 2 until both specificationsare correct 4 603kHz 3 40dB Pushthe 2 Bar antenna L202l Adlust until DC voltagebetween pin 16 of 0201 and groundis maximum 5 1395kHz 3...

Page 24: ...rle g6n6rateurde signauxFM ster6omultiplex sur la bome du modulateurexteme FM SG R6gler la modulation sur d6viation principale l kHz gauche droit L R 167 5kH2 d6viation de synchronisation19kHz t 7 5kHz L103 7 2V CC entre la borne no 36 t la borne de terre IC103 25V CC entre la borne no 36 et la borne de terre 3 R6p6terlesphases1 et 2 afin d obtenir lesdeux caractdristiques correctes R6glerle volta...

Page 25: ...estprogramm6par I ordinateur 3 Accorderle generateur de signauxAM SG sur SX 4 T C 1 0 1 L 1 0 1 0 0 H TC201 gauche OrP R droit Phasa l4ooHz 30 modulation Fr6ouonce J Nivoau Pasde signal Commutatour STATION CALL de SX4 2V CC entre la borne no 36 et la borne de terre 25V CC entre la borne no 36 et la borne de terre et 2 afin d obtenir lesdeux caractdristiques correctes R6gler le volrage en CC entre ...

Page 26: ...rel FM SG con el SX 4 2 Conectar el generador de seiales de FM multiplex al terminal modulador exterior del FM SG Ajustar la modulaci6n a Principal lkHz Izq Der L R i67 5kHz de desviaci6n piloto 19kHz 7 1kl z de desviaci6n 7 2 V C C e n t r ee l t e r m i n a ln o 3 6 y m a s a Sin sefral 25V CC entre el terminal no 36 y masa Repetir los pasos1 y 2 hastaque ambasespecificaciones seancorrectas 9 0 ...

Page 27: ...es un programacontroladopor la computadora 3 Sintonizarel AM SG con el SX 4 rc10 0 0 I M o unror lggfio zqI O TP R 1der J P 1 0ru0 4OOH 30 modulaci6n STATIONCALL 1V CC entre el terminal no 36 y masa Sin senal Presione4 l C 2 O 2 2 5 V C C e n t r ee l t e r m i n a ld e l n o 3 6 y m d s d Repetir los pasos1 y 2 hastaqu ambasespecificaciones seancorrectas Ajustar hasta que la tensi6n O201 y rierra...

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