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SERVICE MANUAL

1. H 1 Ac Ll w 5 220k CT303 S du r304 302 TAA I TL V n PB YEL 0302 2 K022 1 amp DS s j OD ge Dt Lamm T S gp 804 20 2807 08024 47 4 4 IT bait Noy Y Pia 5 gt n2 E T i s lE o do 55 f 4 4 EG 2 0 T 42 u 4 75285 FERRITE RODAN el Ah Ao 9 40 E 0303 opo CF30 Wg A Es 4 oe 2204 8302 100k 3051009 yaya dus HO f 323 9 R 645 0022 aie 308 pies 260 BLK 22k Qu ee Q Mr i 5 0 9 B 5 T 14818 S i 9 88 mI GI o 1 MAT PD BLU a prm Na j Eg 3 9 7 B Syo isi eres osie 22 oco C _ IF IFTIO T ao 1 T 8137 100 406 5 Meca E TU 507 Vos e zi 0 EET bl o 7 Vi Ri orn 206 T Br n 2 x AE T 55 ORG D 68 2 _ 3 a eis 18 5 org M 24 4 680 gi eie p 1 48 d RI 8 B os eee
2. x E L SMET IC IC UNIT CARRY F F TI 0516 0515 057 258 fosis 0540 5902 Sk 27 Y B KEY BOARD 581 5814 5815 STEREO SENS MUTINGI CAL CUMULA T OR q SU SEE OTOR OO 580 5802 5803 5806 5807 5808 s R549 f 27k nd 0501 FLUORESCENT DISPLA 4 i ow PPPGPPPPG x 05 2 3 LU 8 d AM 2 3 Di 4 MEM KHz LW 7MW b 1 22 HY PRESET BOARD HI PD553C I37 ONTROL 0508 510 521 522 191555 23 0504507 151555 Q201 202 2561815 0203 2SCIBI5 0204 2SAI0I5 SWITCH SWITCH Q205 206 25 1890 F20 e R220 2 2 50V 020 m pf PA 2 RIT 8221 22k acad Je 6 C219 2 50V rot e R226 Ik di 1815 UFFER 3 0610 25 1815 MUTING d R627 R630 56k 10 j WwW 0609 2541015 Q607 25 1890 RESET POWER MUTE D604 EQAO 05R 0612 151555 R625
3. d mE 29 ee 4 7 10 5 Silvering deposited outside of tube forming one electrode SL wb 470pF 5 SL COLOR CODE in pF Temperature Multiplier Tolerance charac teristic 1st or 2nd Digit d brown 10 red 10 orange 10 Color yellow 104 green blue violet gray white black gold silver ST JX4L e Handling Precautions for MOS ICs Generally the insulation resistance of the oxide layer in MOS IC structures is very high and the oxide layer is very thin Because of this it is possible that the static voltages usually present on clothes and the human body will be enough to generate a potential difference across the insulator high enough to cause a breakdown of the insulating layer The following precautions should be taken while handling these ICs Particular care should be taken under conditions of low humidity Precautions in Replacing MOS ICs l Store new ICs by inserting them into a urethane polyester cushion which is somewhat conduc tive or wrapping it in aluminum foil so that all the pins are at the same potential The ICs should be stored in that manner until mounted on the circuit board Fig A partially conductive unrethane polyester cushion Fig B N aluminum foil 3 2 Check the soldering iron for possible power line leakage current Mak
4. TUNER BOARD Qi FM RF AMP Q2 FM MIX ALT SWITCH 0 022 e ANT 4 aJ wr Li Q3 BUFFER T cv RIG Q4 Osc C 22 R422 560 2w TL 623 04 C420 621 1 anh 0 022 ci C22 1 Ho Y RIB 6423 0406 25 1815 0022 BUFFER GNU 0301 303 308 25 1815 0301 226 p 254105 302 T 220k 100 T 0301 T R334 _ 0303 ma c3032 301 V tao R335 7 9 0018 MT i 22k 305 304 1126 t 304 9308 336 H lcs mo T cek L303 180yH C306 0 022 0 022 Ok i Toor L302 R303 9302 E LU 0 3909H 6 8k 30 V2W 470p 0302 8304 R305 8026 AF 1302 220k 100 co ael 5308 6 022 Upc 1 p302 KVI226 0403 25 304 0404 2Scl362 L R413 R412 yY FILTER 0 022 I ST 6 8k 560 L cao if 1401 100pH 941 414 0 022 47 10 R406 R407 Sek 0 68 50v 7 E 290 6 8k r R414 0403 R409 8420 0 68 50y 1 501 4 7k 2 2k 2 2k T 27 040 8405 9408 C415 aT L 47k o 47k 0 02 0404 Qd 955 v S ix Te R410 0402 0 1 e 022 0402 560 m
5. M oe C 955122 92916027 ge 9 REO 22 eei ayasa RTO 580 004 7 99 5 2 0401 9 m XR v Ae e agi 10404 C505 0022 9 59 Tas A LM T E ss h i5 Q405 H 5 ito 7 227 5 cat R406 560 24 0402 RLS R o E p pate amp dl 7 DY uc 2 ake ees 040 0502 R53 don a c t 208 098 epi DSO 26 7 4 100p 8 cag 00 iS Heo WHT Bus f WANIE da TRS E ST one 12 47k 58k 20 26 27 B EN ds BOARD coc LEEREN 5808 S807 S806 S805 580 580 T 7 6 5 4 3 2 UNING 406 308 303 108 306 811 s Q Z 101 as 103 104502 105 106 201 405 1 40 59 50 1c502 16503 1 301 310 302 2 302 1 303 304 f 0 40 402 20 2 301 1 403 404 405 508 521 5C T OUTPUT BOARD s C34 Q305 ab ors 060 a gos FNO e fr MINIE Alls FE A B n i o 122 Bs pm nc bee 29 a s 2 p gegen Q203 2 4 9207 230 47 8 Roi Magy AP SCC CET 9 fog
6. STATION IAWORDS X I6 BITS LAST CHANNEL 1 CONTROL Losic AST CHANNEL T MEMORY 4BITS 168175 DATA resister 1 0 CONTROL R508 750 16502 CX76IA MEMORY 0501 25 1815 CLOCK CONTROL 0503 25 1815 CURRENT BUFFER 364 0107 25015 AMP SWITCH NA ow io Dei 0108 J x c203 OTP3 3 7 C208 0 47 50V 2k DE os cos 1 201 143390 E 9107 4 RI29 RI20 100k 45 cuo at ge 3 33 50 241 33 50 i ego D 151555 ELIO R21 5 T50p 162 2 2 50V 1 8k FM MPX 1 217 R215 LF tow tr gt A k 1 8k 9 T c206 L 6205 00177 7 001 AM C218 R209 2 2 50V T 0203 151555 0203 gt 06 25 1815 0503 SWITCH 0305 502 503 526 0502 58 151555 0701 GL5NGIO 1900605 0702 GLSPRS 0505 2501815 SWITCH 0504 25 1815 LEO DRIVER R229 R230 33k 47k 131555 R 0207 25 1890 CAL 0208 25 R232 R233 2 R237 CAL TONE 56k T C224 1 50V c222 C223 P H 1 74 0207 33k 4 225 R234 R236 2312 rH 0022 56k 15 05157520 151555
7. AEP Model UK Model FM STEREO FM AM TUNER SPECIFICATIONS FM tuner section Frequency response 40 Hz 12 5 kHz 0 2 dB Tuning range 87 5 MHz 108 MHz 30 Hz 15 kHz 02 dB Antenna terminals 300 ohms balanced Selectivity 80 dB at 300 kHz 75 ohms unbalanced Capture ratio 1 0dB Intermediate frequency AM suppression ratio 10 7 MHz 60 dB Sensitivity at 46 dB quieting 40 kHz deviation Image response ratio 4uV mono 80 dB 43 30 stereo IF response ratio 100 dB Usable sensitivity 1 4 uV S N 26 dB 40 kHz deviation Spurious response ratio 1 8 uV 10 3 dBf IHF 100 dB Limiting threshold 14V Signal to noise ratio 40 kHz deviation Continued on page 2 80 dB mono 75 dB stereo Harmonic distortion 40 kHz deviation 0 08 mono 0 12 stereo at 100 Hz ATTENTION AU COMPOSANT AYANT RAPPORT 0 08 mono 0 12 stereo at 1 kHz A LA SECURITE 0 1 mono 0 2 stereo at 10 kHz IM distortion 40 kHz deviation LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET 0 08 mono 0 12 stereo UNE MARQUE SUR LES DIAGRAMMES SCH 45 dB at 100 Hz MATIQUES LES VUES CLAT ES ET LA LISTE DES 50 dB 17 dB at 1 kHz PI CES SONT CRITIQUES POUR LA S CURIT DE FONCTIONNEMENT NE REMPLACER CES COMPO SANTS QUE PAR DES PI CES SONY DONT LES NU M ROS SONT DONN S DANS CE MANUEL OU DANS LES SUPPL MENTS PUBLI S PAR SONY 40 dB at 10 kHz SAFETY RELATED COMPONENT WARNING COMPONENTS IDENTIFIE
8. 0 9 510 55 520 522 507 506505 p K L 201 143390 o we cons HYSTERESIS maar gt ies TRIGGER WHT vio 520000 RED 10504 pPD4013C BRN b WHT 5901 r Am D QU 99 8 CNP90I AC IN Note on Schematic Diagram e capacitors uF unless otherwise noted pF uuF 50WV or less are not indicated except for electrolytics and tantalums e All resistors are in ohms 1 W unless otherwise noted 10002 1000 k2 Ter nonflammable resistor A internal component Switch Ref No Switch Position 701 MANUAL TUNING UP OFF S702 MANUAL TUNING DOWN OFF 703 AUTO TUNING DOWN OFF 704 AUTO TUNING UP OFF 705 STEREO MUTING OFF 706 CAL TONE OFF 707 MEMORY OFF 708 FM MW LW OFF 709 716 PRESET 1 8 OFF S801 POWER OFF e gt signal path Note The components identified by shading and mark are critical for safety Replace only with part number specified Note Les composants identifi s par une trame et une marque A sont critiques pour la s curit Ne les remplacer que par une pi ce portant le num ro sp cifi 20 CNJ902 4 2 SCHEMATIC DIAGRAM www FERRITE ROD ANT See 20 for the notes _FEIOL FM FRONTEND _ _ _ _
9. 0402 MVI2N R404 2 0401 2 3 2 K C405 S 4 i 401 2SK30A tone I COUNTER PROGRAMMABLE 8400 ES Tm COUNTER as FILTER 1 406 ic401 47p 9415 1 401 778 56k PLL 9405 100p 4 0405 4 4 6 R402 390k i2k 0 R4I7 22k x40 RAIS A ZZk 4 C404 LC403 0405 0403 MW 56p T TIN 0404 8418 22k SE C408 C407 T 41 25 50 022 0403 405 151555 0108 2SC COMPOSITE 120 l 1 1 LAI235 IF AMP 0101 4106 25 710 119 0 022 QUADRA TUR LIMITER 0101 10 1 Cl24 RH5 T 0 02 0 7 TA RIOB f j ees unt r264 them loe oT Tahy 0022 00227 100 C322 2 100 167 1245 559 AM 10k C37 R313 30111 21 5 0306 307 Tc 0 022 820 R324 R325 ik 05 8333 JT 38e 9314 10k 35 IOk xS 0306 4 c320 gt wa T0 RIF rt 330p 3 3 51 57302 0304 25 5 0305 25 1815 AM FILTER SWITCH R507 6502 050 120k 100p M Awe F iue D Oo 2 B 56k 0501 151555 CLOCK 0502 25 5 GENERATOR ADDRESS STATION DECODER MEMORY ARRAY
10. 5 V AM antenna OUTPUT terminal 30 amplitude modulation by 400 Hz signal Output level as low as possible Tune the set to 999 kHz and adjust IFT301 for a maximum reading on VOM Q 3 MW LW FR e MW Frequency Voltage at T Adjustment Frequency I Voltage at T Adjustment ST JX4L MW TRACKING ADJUSTMENT Adjust for a maximum reading on VOM 1 L701 _ 603kHz CT303 1 395 kHz LW TRACKING ADJUSTMENT Adjust for a maximum reading on VOM 1 L701 CT301 173 kHz 308 kHz VOM de range 7302 mes CT302 CT304 JENCY COVERAGE ADJUSTMENT VOM dc range L7 o e 522kHz 1 5 V T302 1 602 kHz 22V CT304 155 kHz 2 3V T301 344 kHz 18 5 V CT302 Setting Band Selector FM FM Discriminator Alignment 1 Setting 8 STEREO MUTING switch Procedure 9 l Tune the set in the strong IFT102 IFT101 EE TP4 uic 25Vac 2 Adjust the black core pri for 0 V reading on VOM Note When replacing the ceramic filt form this alignment Repeat the secondary side ang ments several times IFT101 primary side black core 1 FM Discriminator Alignment 2 Setting Procedure STEREO MUTING Switch OFF Adjust the white core se
11. FM D517 ceramic filters CF101 104 GL 5NG10 cathode black etn red white O to be connected X to be removed Notes e Color code of sleeving over the end of the jacket wHT Y eer 2 indicates side identified with part number METER DRIVE GND O am ICIO LAl235 D MM lt SIGNAL METER DRIVE QUADRATURE SCHMITT MUTE CIR CUIT DRIVE 10502 CX76IA T Oa Oa retis lo CODE STATION MEMORY ARRA 14 WORDS X16 BITS LAST CHANNEL MEMORY 4BITS STATION LAST CHANNEL 1C503 yPD553C 073 i F RAM BUFFER 4 i CLOCK GENE RATOR peek ACCUMU LATOR STACK 27 sida DE 1 0 INTERFACE 401 CX778 f J T 654321 DET 9 69999 _ 809 5816 STANDARD es 12 SHIFT REGISTER COUNTER g MW LW O Ll ru 97 48 3 2 D 915 CLEAR 90 xl l 4 zb xl tb og TUNER BOARD 1 52 355 c Sama 0304 6 303 9308 ew 129 uec
12. IFT102 for minimum distortion FM rf signal j generator TM Note When replacing the ceramic filte form this alignment Repeat the secondary side and ments several times FM antenna terminal OUTPUT Carrier frequenc 98 MHz Output level 71 mV 60 dB Modulation 400 Hz 40 kHz deviation 100 tation signal ary side of IFT101 r CF101 104 per The FM front end is carefully adjusted at the factory and is supplied as one whole block for replacement primary side adjust VCO Adjustment A Regular Method Setting STEREO MUTING switch OFF Procedure FM rf signal generator FM antenna terminal Carrier frequency 98MHz Modulation 400 Hz 40 kHz deviation 100 Output level 1 mV 60 dB bry side white core 1 Tune the set to 98MHz by pressing the MANUAL TUNING switches Adjust RV201 for 19kHz 100Hz on the ondary side of counter TP5 CF101 104 per frequency counter R206 primary side adjust mark with FM SECTION Setting Band Selector FM FM Stereo Separation Adjustment Setting STEREO MUTING switch ON Procedures FM rf stereo signal generator FM antenna OUTPUT terminal Carrier frequency 98 MHz Output level 71 mV 60 dB Modulation Audio 400 Hz Pilot 19kHz Sub channel FM stereo signal generator output channe
13. items MF uF PF uuF RESISTORS All resistors are are omitted numbers A AAA AAA XX or A AMAA AAA X may be different from those used in the F nonflammable seus COILS MMH mH UH uH All capacitors are in uF pacitors are omitted following lists for their part numbers in ohms Refer to the Common 1 4W 1 84 and 1 16W carbon resistors Refer to the following lists for their part numbers ELECTRICAL PARTS Ref No Part No Description 0308 8 719 815 55 DIODE 151555 0309 8 719 815 55 DIODE 151555 0401 8 719 912 00 DIODE MV 12N 0402 8 719 912 00 DIODE MV 12N 403 8 719 815 55 DIODE 151555 0404 8 719 815 55 DIODE 151555 0405 8 719 815 55 DIODE 151555 0501 8 719 815 55 DIODE 151555 1502 8 719 815 55 DIODE 151555 0503 8 719 815 55 DIODE 151555 0504 8 719 815 55 DIODE 151555 0505 8 719 815 55 DIODE 151555 0506 8 719 815 55 DIODE 151555 0507 8 719 815 55 DIODE 151555 508 8 719 815 55 DIODE 151555 0509 8 719 815 55 DIODE 151555 0510 8 719 815 55 DIODE 151555 0511 8 719 815 55 DIODE 151555 0512 8 719 815 55 DIODE 151555 0513 8 719 815 55 DIODE 151555 D514 8 719 815 55 DIODE 151555 0515 8 719 815 55 DIODE 151555 0516 8 719 815 55 DIODE 151555 0517 8 719 815 55 DIODE 151555 0518 8 719 815 55 DIODE 151555 0519 8 719 815 55 DIODE 151555 0520 8 719 815 55 DIODE 151555 0521 8 719 815 55 DIODE 151555 D522 8 719 815 55 DIODE 151555 0526 8 719 815 55 DIODE 151
14. personnel 50 60 Hz Power consumption 12 Dimensions Approx 430 x 55 x 330 mm w h d 17 x 24 4 x 13 inches including projecting parts and controls Weight Approx 3 6 kg 7 Ibs 15 oz net Approx 4 1 kg 9 Ibs 1 oz in shipping carton MODEL IDENTIFICATION Specification Label AEP model UK model MODEL NO ST JX4L MODEL ST JX4L FM STEREO TUNER FM STEREO FM AM TUNER FREQUENCY RANGE FM875 I08MHz MW522 1602kHz FREQUENCY RANGE LWI55 344kHz FM87 5 108MHz MW522 1602kHz IF FMIO ZMHz AM450kHz LWISS 344kHz AC 220V 50 609 2W IF FMIO 7MHz AM450kHz FTZ PR FNUMMER 1185 AC 240V 50 60Hz 12W SERIAL NO SERIAL NO 255 MADE IN JAPAN 4 875 305 0I MADE IN JAPAN 4 875 306 01 ST JX4L SERVICING NOTES e THE CERAMIC CAPACITORS This set uses tube type ceramic capacitors whose shape is identical with the carbon resistors Be careful not to use resistors instead of capacitors in repairing Disc type ceramic capacitors can be used for multiplier temperature 1st digit characteristic replacing those originally used in the set 2nd digit tolerance Two kinds of drilled holes are provided in some patterns for mounting the tube type and disc type ceramic capacitors Use appropriate holes where Example applicable Sive npn inside envelope Preen 50 second electrode brown lead yellow violet gold white Jig
15. 2 52 TRANSIST a 2SA1015 T301 405 914 00 COIL LW OSC Q303 8 729 663 47 TRANSIST 25 1364 7302 405 927 00 COIL MW OSC 0304 8 729 663 47 TRANS ESTO 2561364 X401 1 527 731 00 OSCILLATOR CRYSTAL Q305 8 729 663 4 TRANSISTOR 25 1364 x401 527 731 00 OSCILLATOR CRYSTAL Q306 8 729 663 47 TRANSISTOR 2SC1364 0307 8 729 663 47 TRANSISTOR 25 1364 0308 8 729 663 47 RANSISTOR 25 1364 0309 8 729 663 47 TRANSISTOR 25 1364 0310 8 729 663 47 RANSISTOR 25 1364 0401 8 729 203 04 TRANSISTOR 2SK30A Q402 8 729 665 47 TRANSISTOR 2SC1362 Q403 8 729 203 05 TRANSISTOR 2SK30A Q404 8 729 665 47 TRANSISTOR 25 1362 NOTE CAPACITORS The components identified by shading and mark critical for safety Replace only with part number specified Les composants identifi s par une trame et une marque Asont critiques pour la s curit les remplacer que par une piece portant le numero specifie ST JX4L 9 950 652 11 Sony Corporation 1981 20 81E0685 1 Printed in Japan
16. 35 00 BOARD RUBBER SHEET KEY SW 519 1 605 472 00 PC BOARD TUNER 520 1 605 473 00 PC BOARD PRESET 521 605 474 00 PC BOARD LED 522 1 605 475 00 PC BOARD POWER SW 523 1 605 477 00 PC BOARD CHANGE SW 524 1 605 478 00 PC BOARD OUTPUT C302 1 161 380 00 CERAMIC 0 001 5MF 10 50V C304 108 352 00 MYLAR 0 0018MF 10 50V C326 161 318 00 CERAMIC 390PF 10 50V C411 0 593 565 CAP ELECT 0 68MF C414 0 593 565 CAP ELECT 0 68MI 901 A 1 102 394 00 CERAMIC 0 022 250 CF101 1 527 836 00 FILTER CERAMIC CF102 1 527 836 00 FILTER CERAMIC CF103 1 527 836 00 FILTER CERAMIC CF104 1 527 836 00 FILTER CERAMIC CF301 1 527 826 00 FILTER CERAMIC CF302 527 817 00 FILTER CERAMIC CT301 1 141 171 00 CAP TRIMMER CT302 1 141 171 00 CAP TRIMMER CT303 141 180 00 CAP TRIMMER CT304 1 141 171 00 CAP TRIMMER D201 8 719 815 55 DIODE 151555 D202 8 719 815 55 DIODE 151555 D203 8 719 815 55 DIODE 151555 0301 8 719 912 27 DIODE 1226 D302 8 719 912 27 DIODE KV1226 D303 8 712 600 00 DIODE 1726 D304 8 712 600 00 DIODE 1T26 D305 8 719 815 55 DIODE 151555 0306 8 719 815 55 DIODE 151555 D307 8 719 815 55 DIODE 151555 CAPACITORS NOTE Items with no part number and no des cription are not stocked because they are seldom required for routine service Items marked service Due to standardization parts with part 4 are not stocked since they are seldom required for routine Some delay should be antici pated when ordering these
17. 4 7k T 2 4 en e 5 L 9 yPD 4013C CAL 1015 TANT MHz IMUTING d 4 _ 0608 25 1815 0602 25 1815 NVERTER ERROR DETECT Q601 603 250880 Q604 258733 REGULATOR r T R629 R628 zl 777777 0603 605 607 0601 602 HZ6B 0606 608 C605 0610 590 47 25 2 TE CNP901 A 0 022 161 39 250V AC IN 2OVIAEP Model R6I3 Bk 240V UK Model POWER SW BOARD 1 00 2 REGULATO 0609 61 230 0605 250774 9606 258734 ST JX4L SECTION 5 EXPLODED VIEWS amp PARTS LIST C ST JX4L ST JX4L GENERAL SECTION ACCESSORY amp PACKING MATERIAL No Part No Description No Part No Description 1 LABEL SERIAL NUMBER 51 1 501 161 00 ANTENNA FEEDER 2 LABEL MADE IN JAPAN 52 1 551 734 11 CORD CONNECTION RK 74A 3 CLAMP 53 3 701 630 00 BAG POLYETHYLENE 4 ACER TERMINAL 54 3 783 531 11 MANUAL INSTRUCTION 5 ABEL CAUTION MAIN 55 3 795 186 11 AEP MANUAL INSTRUCTION DUTCH amp SWEDISH 6 BUSHING CORD 56 4 875 040 00 SHEET PROTECTION 7 AEP sesati LABEL APPROVAL 4 COUNTRIES 57 4 875 042 00 CUSHION LOWER 8 SCREW 58
18. 4 875 043 00 CUSHION UPPER 9 CUSHION SPEAKER 59 4 875 313 00 LABEL EP INDICATOR 10 CAP POWER KNOB 60 4 875 355 00 INDIVIDUAL CARTON 61 9 910 999 47 LABEL SEAL 11 0 BASE POWER KNOB 12 4 875 004 31 PLATE JACK 13 4 017 00 PLATE 0 SIDE 14 4 875 305 00 AEP LABEL MODEL NUMBER 15 4 875 306 00 LABEL MODEL NUMBER UK 16 4 875 319 21 KNOR 3 PROGRAM 17 4 875 319 51 KNOB 6 PROGRAM 8 15 319 71 8 PROGRAM 75 325 00 BRACKET CHASSIS 875 326 01 INN c DIGITAL HEAT SINK E TRANSFORMER DER 81 SCALE DIAI JSE SIGNA RETAINER p INDICATION EL D INDICATOR S CENTER PLATE BOTTOM CHASSIS SUB CASE 5 343 00 LABEL LW SELECTION 31 4 87 32 4 875 354 00 INSULATOR 33 7 4 SCREW P 2 6X5 2 34 SCREW BVTP 3X8 TYP 35 SCREW BVTT 3X6 36 7 685 87 71 09 SCREW BVTT 3X6 S 37 7 685 SCREM BVTT 4X6 S 8 9 9 CUSHION 39 9 CUSHION 40 9 INSULATOR TRANSFORMER 41 9 911 863 COVER EDGE 42 ANEL ASSY FRONT 43 amp iA 43 MOUNTED PCB TUNER 44 A 4447 KNOB ASSY POWER 45 X 3701 FOOT ASSY M F 46 X 4875 301 0 KNOB ASSY PRESET NOTE CAPACITORS Items with no part number and no des All capacitors are in uF Common ca The components identified cription are not stocked because they pacitors are omitted Refer to the by shading and mark are are seldom required for routine service following lists for their part numbers c
19. 555 0601 8 719 200 02 DIODE 10E2 0602 8 719 200 02 DIODE 10 2 0603 8 719 910 64 DIODE HZ6BlL D604 8 719 936 05 DIODE EQAO1 05R 0605 8 719 910 64 DIODE 7681 0606 A 8 719 200 02 DIODE 10E2 D607 8 719 910 64 DIODE HZ6BlL D608 8 719 200 02 DIODE 10E2 0609 8 719 913 02 DIODE HZ30 2L 0610 5 8 719 200 02 DIODE 10E2 D611 8 719 913 02 DIODE HZ30 2L 0612 8 719 815 55 DIODE 151555 0613 8 719 936 06 DIODE 0 01 06 D701 8 719 951 00 DIODE GL 5NG10 0702 8 719 900 56 DIODE GL 5PR5 FE101 1 463 369 00 FRONT END FL501 1 519 229 00 INDICATOR TUBE FLUORESCENT Common ca The components identified by shading and mark Aare critical for safety Replace only with part number specified Les composants identifi s par une trame et une marque A sont critiques pour la s curit Ne les remplacer que par le num ro une pi ce portant specifie ST JX4L Items with no part number and no des cription are not stocked because they are seldom aet for routine service Items marked 5 are not stocked since they are seldom for routine Some delay should be antici pated when ordering these items service Due to standardization parts with part numbers A A 5 A A XX or A AAAA A be different fron those sed in the set All capacitors are in uF Common ca pacitors are omitted Refer to the following lists for t
20. 85 EII 0335315 1185 QNVOB 1081N02 0 2 HOLY 6171 2 00 9050 H2LIAS HOLIMS toz cozb HOLIMS 2052 1050 2081405 2012 8060 Lonas t qit 9011010 ii Ni ony iH 10 ON 1NOMN3 Ni 10134 206782 1 3 TUNING WITH THE STATION PRESET BUTTONS With this tuner owing to an electronic tuning system using a PLL Phase Locked Loop synthesizer and a memory circuit the reception of a station is much simplified Once you commit the frequencies to memory pushing a button is all you need do to select a desired station There is no need to search for the station with the TUNING button each time you wish to tune in a station ST JX4L TO MEMORIZE THE STATION FREQUENCIES Preparation A total of eight station preset but tons can be preset for either FM MW or LW in any desired sequence Arrange the order of stations for each station preset button and note the band and the frequency of each in advance Follow the numbered sequence Tune in the desired station Note that the setting of the and SENS switches for reception of this station is mem orized Illuminates for a few seconds While the MEMORY indicator is illumina ted press
21. D BY SHADING AND MARK A ON THE SCHEMATIC DIAGRAMS EXPLODED VIEWS AND IN THE PARTS LIST ARE CRITICAL TO 8 ET zy SAFE OPERATION REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR sus AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS MICROFILM PUBLISHED BY SONY ST JX4L RF intermodulation 74 9 IHF 88 dB 2 4 MHz Sub carrier product ratio 55 dB Muting threshold Approx 25 2 dBf 10 Output level impedance 75 kHz deviation 750 mV 4 7 ohms Calibrating tone level 50 modulation 37 5 kHz deviation 400 Hz measured with the SENS switch engaged MWILW tuner section MW LW Tuning range 522 1 602 kHz 155 344 kHz Antenna Ferrite rod antenna External antenna terminal Intermediate frequency 450 kHz ferrite rod 46 42 dB m 54 50 dB m Usable antenna at 999 kHz at 230 kHz sensitivity external 40 30 50 40 uV antenna at 999 kHz at 230 kHz Signal to noise ratio 55 58 dB 55 58 dB Harmonic distortion 0 3 0 3 Selectivity 45 dB 9 kHz 45 dB 9 kHz Image response ratio 45 dB at 999 kHz 75 dB at 230 kHz measured with the SENS switch engaged General System PLL quartz locked digital synthesizer system Power requirements UK model 240 V ac or 220 V ac adjust able by authorized Sony personnel 50 60 Hz AEP model 220 V or 240 V adjust able by authorized Sony
22. IC Function FM Muting ON OFF Signal Level is always H at AM mode Memory IC Data Input See next page FM AM Control Output FM 1 AM 0 MW LW Control Output MW 1 LW 0 Clock Output for PLL MEMORY IC See next page PLL Latch Output Data Output for PLL MEMORY IC Address Output for Memory IC Mode Control Output for Memory IC SWITCH AND DISPLAY MATRIX PA 4 LW changeover OFF LW 153 342 kHz ON LW 155 344 kHz 10 7MHz 50kHz When identification color of ceramic filter is black or white this diode is used PG MANUAL 27 MUTING JP TUNING B gt 4 VP FMIMW CW si 7 SENS MEMORY 1 Switch 1 L pm TONE P MANUAL 10 7 MHz 50 kHz 10 65 MHz When identification color of ceramic filter is black this diode is used ST JX4L Switching Matrix CAL TONE CONTROL 7 1 Display SENS CONTROL MUTING CONTROL e ENFORCED CONTROL ST JX4L BLOCK DIAGRAM 1 2 219110 5050 M344n8 1N38n05 SEOs 38n1 14520 183253800141 10503 1090 2091090 9025020 HOLIMS 301717934 8 1 135389 808 10
23. S BS 2 AOE um 628 22810 lt s 510 wl nasi rr SBN ot yr aie 2 3 38 3t E e 957 NN Van T dr Rue 929 cibis B Ys M GIN ERST oT NE 333 EY exl 02 REOS gt ad PP 319 2 5 T UEO FARA C228 1 80 oh 5 E 0 b 4 9 a d i jt Ik TPS 43 9602 f 50k FL ce27 R 2 T 50V 22 oS 7 5 R6071 10 452 ONE Ee oe SS Say 9 ce03 1 Tue 2088 23 IEN 5 4 220k 245 50088 D605 8559 101 7 209 001 ore 9 60 0 0142 6 021 10 o Lidia y age eg d Re 94 0 o 0604 ano 58 0509 242 TPS gt 330 50V aia Le on 9 VIO UK model 77 T5 RP fU 297 REDIAEP moder 28 A 465 1 Wn P 0609 RED UK model 4 4 le cai TI c 37 6 610 VIO AEP mode 42 EE OMNE 665 8022 BLU EN Aa oii or 19506 C616 BRN e Ea B lc p ime TEX 3 PE e i BRN 39 oTPI2 ERV 4 206 oe 205 203204 gi gt 698 ew Q 504 505 201 202 20 3 204 606 1 201 1 505 504 9 ic 101 612 19 516 503 502526305 me 607 883 895 602 i 514513512511 518517 201 202 609 8
24. TOR 2SA1015 LPF101 1 235 046 00 ENCAPSULATED COMPONENT B E F Q610 8 729 663 47 TRANSISTOR 25C1364 LPF201 1 235 045 00 ENCAPSULATED COMPONENT L P F R103 A 1 247 109 00 CARBON 230 5 1 4W 0101 8 729 671 14 TRANSISTOR 25 710 R128 A 1 247 109 00 CARBON 230 5 1 44 F Q102 729 671 14 TRANSISTOR 25 710 R201 A 1 247 107 00 CARBON 100 5 1 40 0103 8 729 671 14 TRANSISTOR 2SC710 R312 1 247 107 00 CARBON 10057 1 4M 0104 8 729 671 14 TRANSISTOR 25 710 R318 1 247 109 00 CARBON 230 5 F 0105 8 729 671 14 TRANSISTOR 2SC710 R601 x 247 131 00 CARBON 1K 5 1 40 0106 8 729 671 14 TRANSISTOR 25 710 R602 A 1 247 083 00 CARBON 10 5 1 4u F 0107 8 729 663 47 TRANSISTOR 25 1364 R607 1 247 083 00 CARBON 10 5 1 4 F 0108 8 729 663 47 TRANSISTOR 2561364 R609 1 247 083 00 CARBON 10 5 1 4 Q201 8 729 663 47 TRANSISTOR 25 1364 R611 A 1 247 097 00 CARBON 39 5 1 44 0202 8 729 663 47 TRANSISTOR 25 1364 R612 A 1 247 137 00 CARBON 1 8K 5 1 44 0203 8 729 663 TRANSISTOR 2501364 R614 A 1 247 097 00 CARBON 39 5 1 4 F 0204 8 729 201 TRANSISTOR 25A1015 R615 A 1 247 137 00 CARBON 1 8K gt 5 174W F 0205 T 729 389 09 TRANSISTOR 2SC1890 0206 3 729 389 09 TRANSISTOR 25 1890 RT101 226 236 00 RES ADJ CARBON 10K Q207 8 729 389 09 RANSISTOR 25 1890 RT201 1 226 236 00 RES ADJ CARBON 10k RT202 226 240 00 RES ADJ CARBON 200K 0208 TRANSISTOR 25C1364 97203 1 226 239 00 RES ADJ CARBON 100K Q301 TRANSISTOR 2SC1364 Q30
25. e sure that there is no leakage path by connecting an ohmmeter to the tip of the soldering iron and the plug as shown in Fig C If there isa leakage path use some other soldering iron VOM 9 10 000 range soldering iron 3 Equalize any potential difference between the clothes the tools in use the work bench the set being worked on and the packaged IC by touching them all in succession with the hands or a conductive wire or tool 4 The following are effective methods for handl ing ICs that remove the potential difference across the oxide layer Use a paper clip modified by soldering in a wire braid insert wire braid clip gt E soldered soldered x Make sure that there is Fig D no solder on the inside clip partially conductive urethane polyester Fig E cushion or aluminum foil wire braid clip CCILIII Make sure that all the pins are in contact with the wire braid all the pins will then be at the same F ig F potential Take a short length of fine bare wire and wind it around the IC so that it shorts all the pins of the IC while it is still in the urethane This the same polyester cushion or aluminum foil ensures that all the pins are at potential fine bare wire stripped solid hookup wire etc partially conductive urethane polyester cushion or aluminum f
26. heir part numbers MF pF RESISTORS All resistors are in ohms Common 1 4W 1 8W and 1 16W carbon resistors are omitted Refer to the following lists for their part numbers PF uyF F nonflammable COILS MMH mH UH uH ELECTRICAL PARTS ELECTRICAL PARTS Ref No Part No Description Ref No Part No Description 01 8 759 812 35 LA1235 0405 8 729 201 52 TRANSISTOR 2SA1015 10201 8 759 833 90 1 LA3390 0408 8 729 663 47 TRANSISTOR 25 1364 16301 4 159 812 45 LA1245 0501 8 729 663 47 TRANSISTOR 25 1364 IC401 8 759 607 78 C CX 778 0502 8 729 663 47 TRANSISTOR 2SC1364 IC501 8 7 9 140 11 UPD4011C 0503 8 729 663 47 TRANSISTOR 25 1364 0504 8 729 663 47 TRANSISTOR 25 1364 10502 8 757 611 00 IC CX 761A 1 503 8 459 131 37 UPD553C 137 0505 8 TRANSISTOR 25 1364 10504 8 759 140 13 IC UPD4013C Q506 8 TRANSISTOR 25 1364 505 8 759 140 13 IC UPD4013C Q601 8 TRANSISTOR 2SD880 0602 8 m 2561364 IFT101 1 404 339 00 TRANSFORMER DISCRIMINATOR Q603 8 TRANSISTOR 2SD880 IFT102 1 404 338 00 TRANSFORMER DISCRIMINATOR FM IFT301 1 404 326 00 TRANSFORMER IF Q604 8 729 113 32 TRANSISTOR 258733 Q605 729 177 43 TRANSISTOR 250774 L301 407 173 XX MICRO INDUCTOR 220UH Q606 8 729 103 43 TRANSISTOR 258734 L302 1 407 176 XX MICRO INDUCTOR 390UH Q607 729 389 09 TRANSISTOR 2SC1890 L303 407 172 XX MICRO INDUCTOR 180UH Q608 iR 663 47 TRANSISTOR 25 1364 L401 1 407 169 XX MICRO INDUCTOR 100UH Q609 8 729 201 52 TRANSIS
27. l 16 25 kHz deviation 4096 7 5 kHz deviation 19 16 25 kHz deviation 40 VTVM connection VTVM reading dB L CH L CH 9 Adjust RV202 for minimum reading R CH Stereo separation equal The separations of both Adjust RV202 for minimum reading L CH Stereo separation A channels should be CAL TONE Level Adjustment Setting CAL TONE switch ON Procedure Adjust RV203 for 0 39 V 6 dB reading on VTVM ST JX4 OUTPUT FM Muting Level Adjustment Py Setting gt 2 4 STEREO MUTING switch ON Procedure FM rf signal generator VTVM FM antenna OUTPUT terminal Carrier frequency 98 MHz Modulation 400 Hz 40 kHz deviation 10096 Output level 10 uV 20 dB Tune the set to 98MHz by pressing the MANUAL TUNING switches he 2 Adjust RV101 for a 0 V reading on the VTVM Le SECTION 4 DIAGRAMS MOUNTING DIAGRAM Conductor Side 4 1 Semiconductor Lead Layouts 25 1815 25 1364 25 1362 25 1890 2541015 25 734 CX761A CX778 LA1235 LA1245 LA3390 uPD552C 065 c uPD4011 151555 10E2 KV1226 D EER etter side EQA01 06R IN HZ6B2L i i HZ16 2L HZ30 3L athode GL 5PR5 cathode 2 2 cathode 1 Identification color of
28. oil Fig G When it is necessary to handle the IC with the fingers do not touch any pin and hold the IC at the ends of its plastic package case as shown in Fig H Fig H Method of Mounting Insert the IC while holding it with the modified clip and solder all the pins with the clip still shorting the pins Similarly solder all the pins while the bare shorting wire is still wound around them Remove the clip or the bare shorting wire only after all the pins have been soldered ST JX4L Precaution while Checking C MOS ICs The C MOS ICs Complementary MOS are MOS ICs that N channel and P channel push pull stages to increase have their output sections made up of their speed of operation If the output terminal of these ICs comes into contact with B or B voltage then the FET which is ON at that time will either become shorted or open This is valid for all the output sections that are connected together by the interconnections Even the circuits that are physically separated and not on the same board can be destroyed simultaneously Example If this line is grounded or touches or B bus the output stage of this IC will be destroyed Fig ST JX4L SECTION 1 OUTLINE 1 1 CONTROLLER 1C503 uPD553C 137 1 Input Output PORT S FUNCTION Port PA2 PA3 3 PCO 3 PDO 3 PFO 3 PGO 1 PG2 PG3 PEO PEI PE2 PES PHO 3 PIO 2 Pin No of
29. ritical for safety Items marked are not stocked since e UM part they are seldom required for routine RESISTORS number specified service Some delay should be antici resistors are in ohms ommon Fig pated when ordering these items 1 4W 1 8W and 1 16W carbon resistors 252 ease are omitted Refer to the following Ae nag Due to standardization parts with part lists for their part numbers critiques pour la securite numbers A AAA AAS XX or AAA X Ne les remplacer que par may be different from those used in the F nonflammable une pi ce portant le numero set COILS specifie MMH mH UH uH 27 ST JX4L ELECTRICAL PARTS Ref No Part No Description 501 1 401 888 00 ANTENNA FERRITE ROD LW MW L701 502 A 1 447 064 00 TRANSFORMER POWER T901 503 1 507 699 00 JACK PIN 2P CNJ901 504 4 1 534 817 AEP CORD POWER 505 1 535 116 00 TERMINAL 506 4 1 535 120 00 TERMINAL 507 1 535 121 00 TERMINAL 508 4 1 535 140 00 BASE POST 19MM 10MM PITCH 3P 509 1 536 663 00 TERMINAL BOARD ANTENNA 510 1 551 884 00 UK CORD POWER 511 1 552 430 00 SWITCH SLIDE S902 512 1 552 539 00 SWITCH KEY BOARD 5801 5808 513 12553 318 00 SWITCH PUSH AC POWER 5901 514 1 553 742 00 SWITCH RUBBER KEY 5809 5816 515 1 560 595 00 TERMINAL WITH BASE 516 1 561 471 00 SOCKET CONNECTOR 6P SL 518 4 1 605 0
30. s a memory circuit to re member the station which had been received for more than one second just before the power was turned off This station will be automatically tuned in when the power is turned on again This memory system enables you to make a timer activated recording from the tuner ST JX4L SECTION 2 DISASSEMBLY Note Follow the disassembly procedure in the numerical order given Top Cover Front Panel Removal BVTT3x6 e 0 0 top cover _ front panel a j E QsvrT3x6 me 5 top cover hcm Pe 0 BVTT3x6 front panel lt Bottom Plate Removal 1 Loosen the eight screws BVTT3x6 2 Remove in the o direction of arrow Note Do not loose these screws 1g ADJUSTMENTS MW LW SECTION Setting Band Selector MW LW Setup before tracking and frequency coverage adjustments AM rf signal generator Put the lead wire antenna close to the set 30 amplitude modulation by 400 Hz signal VOM 7 range 0 5 5V ac OUTPUT eRepeat the procedures in each adjustment several times and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors SECTION 3 AM IF ALIGNMENT Procedure AM rf signal generator Carrier frequency 999 kHz ST JX4L vom 2 range 0 5
31. the desired station preset button 3 The indicator will go out and the band frequency and setting of the 50 and SENS switches will be memorized Repeat these steps for each station preset button Replace the station labels to conform to the selected prememorized stations Notes The MEMORY indicator will go off automatically after a few seconds When the indicator is out the memory circuit does not operate to memorize the station The previous memory will be erased when a new frequency is committed to the memory of the same button An erasure cannot be made without a new input To memorize a weak station To memorize MW and LW stations whose signals are weak or whose strength is variable tune with the SENS switch engaged To memorize weak FM sta tions tune with the SENS switch engaged and the switch disengaged This will ensure the onetouch memory reception of those stations TO CHECK THE PRESET FREQUENCY After the memory procedure is completed con firm the prememorized frequency Press the TUNING button and change the frequency display indication Press the station preset button to be checked The frequency which had been pre memorized should then be indicated in the band frequency display win dow TO RECEIVE A PRE MEMORIZED STATION Turn the POWER switch on and simply press the desired station preset button Memory of the last received station This tuner include

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