SERVICE MANUAL
Contents
1. 1 2 3 4 5 6 7 TUNER BOARD 9 252565 awe 252689 AMP J 5555 FRONT END AEP UK 2 W6 IT MODEL gt a AEP UK MODEL ON 2529310 LW SWITCH e LW SWITCH 22 eos T 7 Ge 4 7 2905 07 MW SWITCH I war _ 0 MODEL I 107 sor 48 gi 25x246 31 3 ppe DD 5631 5 68 1911184 TO PANEL BOARD CNTO PANEL ST H300 10 11 12 13 14 15 LA4881N FM DET MPX AM IF ws T MODEL TCB007 3HJ 31J CNP FOR TA 20 0 50 of ef 140 sl 30 0 7g g jop 150 1 52535 2 RESET 5v 13 2222 22 3 3 SCHEMATIC DIAGRAM PANEL SECTION 1 2 3 4 5 6 7 8 PANEL BOARD FLUORESCENT INDICATOR TUBE A T 3 MUT gt d al 9 1 a D E F 6 F 4 b el H h Y ST i TUNER BOAR 5 L2. 1 537 138 31 TERMINAL BOARD ANTENNA R38 1 249 363 11 CARBON MELF 220K 5 1 8W R39 1 249 339 11 CARBON MELF 22K 599 1 8W TP1 1 560 060 00 PIN CONNECTOR 2P R40 1 249 338 11 CARBON MELF 188 596 1 8 R41 1 249 344 11 CARBON MELF 5 68 5 8 81 1 577 126 11 VIBRATOR CRYSTAL 7 2 R42 1 249 359 11 CARBON MELF 1008 5 1 8 Note The components identified by mark N or dotted line with mark are critical for safety Replace only with part number specified ST H300 EXCEPT FOR TUNER Ref No Part No Description Ref No Part No Description 901 A 4334 654 A MOUNTED PCB PANEL RESISTOR 901 A 4334 653 A UK WG MOUNTED PCB PANEL 902 4303 167 AEP UK MOUNTED PCB TUNER TCB007 3HJ R701 1 249 405 11 CARBON 100 599 140 902 4303 188 WG IT MOUNTED TUNER TCB007 31J R702 1 249 438 11 CARBON 56K 5 R703 1 249 435 11 CARBON 33K 5 CAPACITOR R704 1 249 429 11 CARBON 10K 5 1 4 R705 1 249 433 11 CARBON 22K 5 1 4 701 1 125 486 11 DOUBLE LAYERS 027 55 C702 1 136 173 00 FILM 047 5 50 R706 1 249 438 11 CARBON 56K 5 1 4 C703 1 162 306 11 CERAMIC 0 01MF 20 16V R707 1 249 435 11 CARBON 33K 5 1 4 C704 1 126 094 11 ELECT 4JMF 20 25 R708 1 249 441 11 CARBON 1008 5 1 4 C705 1 162 200 31 CERAMIC 5 50V R709 1 249 429 11 CARBON 108 599 1 4W R710 1 249 429 11 CARBON 10K 5 1 4W C706 1 162 200 31 C
3. Items marked are not stocked since they are seldom required for routine service Some delay should be anticipated when ordering these items f there are two or more same circuits in a set such as a stereophonic machine only typical circuit parts may be indicated and capacitors and resistors in other same circuits may be omitted TUNER Ref No Part No Description CAPACITOR C1 1 162 294 11 CERAMIC CHIP DOOIMF 20 C2 1 124 477 11 ELECT 47MF 20 C3 1 163 059 00 CERAMIC MELF 0 01MF 20 C4 1 162 294 31 CERAMIC CHIP 0 001MF 20 55 1 163 059 00 CERAMIC MELF 001 20 C6 1 163 059 00 CERAMIC MELF 001 20 67 1 163 059 00 WGIT CERAMIC MELF 001 20 C 1 163 059 00 WG 1 CERAMIC MELF 0 01MF 20 C9 1 163 059 00 CERAMIC MELF 0 01 20 C10 1 162 516 11 CERAMIC CHIP 100PF 10 1 101 005 00 WG T CERAMIC 0 022 C21 1 101 006 00 CERAMIC 0 047MF c22 1 163 059 00 CERAMIC MELF 0 01MF 20 C23 1 124 477 11 ELECT 47 20 654 1 123 382 00 ELECT 33MF 2096 625 1 163 063 00 CERAMIC MELF 0 022 25 1 163 019 00 0 0068 20 627 1 162 516 11 CERAMIC CHIP 100 10 627 1 163 007 11 WG IT CERAMIC CHIP 680PF 2096 C28 1 124 791 11 ELECT 1 0MF 20 C29 1 162 516 11 WG IT CERAMIC CHIP 100PF 10 C30 1 124 791 1 ELECT 10 20 C31 1 124 902 00 ELECT 047 20 C32 1 124 463 00 ELECT 0 1MF 20 C33 1 130 481 00 FILM O 0068MF 5 C34 1 123 382 00 ELECT 33
4. English 9000460 1 Sony Corporation Printed in Japan 9 955 807 21 Audio Group 1980 4 20 Published by Customer Relations and Service Group
5. Example e WG est Germany Model items marked are not stocked since s ASNOBZBAUANCE EH IT Itarian Model they are seldom required for routine service Some delay should be antici Cabinet s Color Parts Color pated when ordering these items 902 P 12 3 ex 11 lt lt 8 CNP 10 gt xia i 9 fy 5 j L u A 3 N 7 4 L Se 6 D not supplied 2 e 5 1 1 I J 901 1 lt P Ref No Part No Description Remarks No Part No Description Remarks 1 4 930 336 01 FOOT FELT 10 7 685 647 79 SCREW BVTP 3X10 5 B qh EX FRONT 11 4 930 344 01 HOLDER CONNECTION CORD 4 Mo en CASE M3X8 12 4 612 009 01 17 SPACER A 4 MH 901 4334 654 IT MOUNTED PCB PANEL 3 7 885 54 08 f 901 4334 653 AEP UK WG MOUNTED PCB PANEL 6 6 8 N S 902 4303 187 UK MOUNTED PCB TUNER TCB007 3HJ 1 ae HODER PCB 902 A 4303 188 A WG IT MOUNTED PCB TUNER 68007 31 Ee EBD GROUND CNP 1 575 579 11 CORD WITH CONNECTOR NEL ST BACK FL701 1 517 587 11 INDICATOR TUBE FLUORESCENT ST H300 SECTION 5 ELECTRICAL PARTS LIST NOTE Due to standardization replacements in the parts list may be different from the parts specified in the diagrams or the components used on the set
6. 8 R CH Stereo separation The separations of both channels should be equal AM SECTION e AM TUNING LEVEL Adjustment Setting AM RF signal generator Put the lead wire antenna close to the set 1 Carrier frequency 216kHz 30 amplitude modulation by 400Hz signal Output revel LW 6808 Procedure 1 Tune the set to 216 kHz 2 Adjust the RV22 so that the TUNED LED goes on Parts Arrangement Diagram for Adjustments RV24 Tuned Level Adjustment FM BOTTOM VIEW H RV21 Stereo Separation Adjustment FRONT SIDE TUNER 80ARD ST H300 uA e IC Block Diagrams 1C21 LA1858N ae oe I ee 2 _ pe 1 2 D PRH m 81 LC7218 25 7 DOW 0 0 Y I 1 1 F bd A py ST H300 3 4 FM FRONT END SCHEMATIC DIAGRAMS FE1 WG IT Model TROZ COT 22p t 2SC339 003 ANI2K gt cos T 00 9014 10 A ROI ne 253494 09 2208 COIS 5 0 0 0 TRO3 2563391 ST H300 3 5 SCHEMATIC DIAGRAM TUNER SECTION e Refer to page 11 for IC Block Diagrams
7. 8109 1 249 343 11 CARBON MELF 47K 5 I 8w 8110 1 249 405 11 CARBON SMALL 100 5 4 F R16 1 249 343 11 WGT Rill 1 249 341 11 CARBON MELF 33K 5 1 8W CARBON MELF 4 7K 5 1 8W R112 1 249 332 11 CARBON MELF 560 5 8 R21 1 249 404 00 CARBON SMALL 82 5 1 4 F R22 1 249 433 11 CARBON SMALL 22K 5 8113 1 249 335 11 CARBON MELF IK 5 8 R23 1 249 335 11 CARBON MELF IK 5 1 8W R114 1 249 328 11 CARBON MELF 270 5 1 8 R24 1 249 353 11 CARBON MELF 33K 596 1 8 8115 1 249 351 11 CARBON MELF 22K 5 1 8w R116 1 249 339 11 CARBON MELF 22K 5 1 8w R25 1 249 345 11 CARBON 82K 5 1 8 R117 1 249 343 11 CARBON MELF 47K 5 1 8 R26 1 249 340 11 WGIT CARBON MELF 27K 596 1 8w R118 1 249 323 11 CARBON MELF 100 596 1 8W R27 1 249 432 11 CARBON SMALL 18K 599 l 4W R28 1 249 423 11 CARBON SMALL 3 3K 5 1 4W 21 1 238 013 11 AEP UK RES ADJ CARBON 22K R29 1 249 347 11 CARBON MELF 108 5 RV21 1 238 015 11 WG T RES ADJ CARBON 4 7K Rv22 1 238 017 11 RES ADJ CARBON 22K R31 1 249 331 11 CARBON MELF 470 5 1 8W RV24 1 238 017 11 AEP UK RES ADJ CARBON 22K R32 1 249 347 11 CARBON MELF 5 88 RV24 1 238 019 11 8 8 ADJ CARBON 47K R33 1 249 347 11 CARBON MELF 10K 5 34 1 249 437 11 SMALL 47K 5 VAW T21 1 404 807 11 TRANSFORMER DISCRIMINATOR R35 1 249 355 11 CARBON MELF 47K 5 1 8 T23 1 236 465 11 WGT ENCAPSULATED COMPONENT R37 1 249 359 1 CARBON MELF 1008 5
8. sensor Cue cares ees cots G 2 Wy Joj OE O 1599 puj uondooa 1 pue 0 4 E waunsnipe vuusiuy 15040 685 80158 o uae 5584 MOAN aq uoqdaoe ING oasis ou pw Bo AROSE woy 5 ONUNWOJYALS 3849 pesos ujflueats 10800 9 56 96 915 NJ UE usu Suesddy OHS pauni si uiBusuis BUNS gs uayu sieaddy 81251 eui uo oes eut ci u aung fy Aeydsip wa way O1nv eu 98 E pueg mes Z Ajenuey ui tuee de 18 9 95 63 3434 88 0 aye pid 69 839 04 G DNNN Vi uos aui aung sueodde O10 eve AWANYRUOLNY staid MIN Wd opes SE pueq QN 558 sy ueodde pueq a mun ONVE Z 55 4 u uum OO T nova Ducis amp atom suoqmis 040921 03 NOK SmOYE 5 41 ST H300 AOL AQN30O38373701 555 64 eu
9. 1317 50 25 2669 0 25 3113 25 3330 SECTION 2 ELECTRICAL ADJUSTMENTS FM SECTION e FM Discriminator Alignment NULL check Setting FM RF stereo signal generator Carrier frequency 98MHz Modulation 1 2 75kHz deviation 100 Output level 1mV 60 dBu FM ANTENNA VOM ran NULL term t Procedure l Tune the set to 98 MHz 2 Adjust T21 for 0 V reading on the VOM Note FM TUNING LEVEL adjustment should be made after FM discriminator alignment FM TUNING LEVEL Adjustment Setting FM RF stereo signal generator set Carrier frequency 98 MHz 719 Modulation IkHz 75kHz 2 deviation 101 100 FM ANTENNA Output level 0 018mV 25 Procedure l Tune the set to 98 MHz 2 Adjust RV 4 so that the TUNED LED goes on e FM Stereo Separation Adjustment Setting FM RF stereo signal generator VTVM 2 1 1 Carrier frequercy 98MHz zi E a EN Output level 1mv 60 dB ANTENN Modulation L R 33 75kHz deviation qor L R 337585 deviation 4772 Pilot Signal 19kHz 7 58142 deviation Procedure Tune the set to 98 MHz FM VTVM VTVM Signal generator connection reading dB Output channel AE L CH L CH L CH Adjust RV21 for minimum reading R CH R CH R CH Adjust RV21 for minimum reading L CH Stereo separation 8
10. 22 8 729 119 78 TRANSISTOR 2SC2785 HFE R46 1 249 344 11 CARBON MELF 56K 5 1 8W Q23 8 729 900 61 TRANSISTOR 114 5 R47 1 249 409 1 CARBON SMALL 220 5 F 024 8 729 900 80 TRANSISTOR DTCII4ES R48 1 249 359 11 CARBON MELF 100K 8 1 8W 026 8 729 900 80 TRANSISTOR DTCII4ES R49 1 249 359 11 CARBON MELF 100K 596 8 Q61 8 729 900 80 TRANSISTOR DTCII4ES R61 1 249 359 11 CARBON MELF 1008 596 1 8W Q62 8 729 900 80 TRANSISTOR DTCII4ES R62 1 249 355 11 CARBON MELF 47K 5 1 8 Q63 8 729 900 80 TRANSISTOR DTCLI4ES R64 1 249 351 11 CARBON MELF 22K 5 8 064 8 729 820 24 TRANSISTOR 2 3330 R65 1 249 355 11 CARBON MELF 478 5 8 065 8 729 820 10 TRANSISTOR 2SA1317 5U R66 1 215 493 00 CARBON MELF 1M 5 1 5 066 8 729 900 80 TRANSISTOR 114 5 R67 1 249 359 11 CARBON MELF 1008 5 1 8 081 8 729 900 61 TRANSISTOR 1 5 R68 1 249 352 CARBON MELF 27K 5 1 8 Q82 8 729 900 80 TRANSISTOR DTC1I4ES R69 1 249 351 11 CARBON MELF 22K 5 1 8W Q83 8 729 202 67 TRANSISTOR 2SK246GR3 R70 1 249 331 1 CARBON MELF 470 5 1 8 8 729 230 93 TRANSISTOR 25 3113 R71 1 249 339 11 CARBON MELF 22K 5 1 8 Q85 8 729 202 67 TRANSISTOR 2SK246GR3 R72 1 249 351 11 CARBON 22K 5 1 8W 986 8 729 230 93 TRANSISTOR 25 3113 R73 1 249 347 11 CARBON MELF 10K 5 1 8 R74 1 249 347 1 CARBON MELF 10K 5 RESISTOR 875 1 249 343 11 CARBON MELF 47K 5 1 8 R 1 249 397 11 WG IT RBI 1 249 335 11 CARBON MELF IK 59 8 CAR
11. 419 11 PIN CONNECTOR 9P Sv CNJ4 1 568 372 11 PIN CONNECTOR 50V 16v D61 8 719 912 20 DIODE 155120 10V 16V FEl 1 463 857 11 WGIT _ FRONT END FM FEI 1 463 862 21 AEP UK FRONT END FM sov 1 236 462 11 ENCAPSULATED COMPONENT MW RF 25 FE62 1 236 453 11 ENCAPSULATED COMPONENT LW RF 25V 1021 8 759 821 45 IC LA1851N 50 1681 8 759 820 91 IC LC7218 25 tI 1 410 645 31 MICRO INDUCTOR 100UH Ez 1 410 645 31 WGIT MICRO INDUCTOR 100UH 25 121 1 407 500 00 MICRO INDUCTOR 47MMH 18 L6l 1 410 525 11 MICRO INDUCTOR 220UF 50V 50 LPF21 1 235 164 00 FILTER LOW PASS 25 LPF22 1 235 164 00 FILTER LOW PASS 25 QI 8 729 230 99 TRANSISTOR 2SC2669 OY 25V Q2 8 729 230 99 TRANSISTOR 25 2669 3 6 PRINTED WIRING BOARD TUNER SECTION ut ON 2622 ssp 3 T I gt A TUNER BOARD WGT MODEL peso lt dra ZX 4 0 oce 062 10 322 el g h Qh EIL e Semiconductor Location CNP FOR TA 489 A REN e MODEL MOSEL 7 AE e o gt TC B007 31J 3HJ Ri Location D61 5 621 D 6 IC81 B 4 01 C4 Q2 4 Q3 C5 04 C5 Q21 C7 Q22 D 7 Q23
12. 5120 5708 1 554 596 21 SWITCH KEY BOARD PRESET TIME D715 8 719 912 20 DIODE 155120 709 1 554 596 21 SWITCH KEY BOARD PRESET TIME 5710 1 554 596 21 SWITCH KEY BOARD ENTER NEXT D716 8 719 912 20 0100 155120 5711 1 554 596 21 SWITCH KEY BOARD STEREO MUTING 0717 8 719 912 20 DIODE 155120 6713 1 554 596 21 SWITCH KEY BOARD MEMORY D718 8 719 912 20 DIODE 155120 0719 8 719 912 20 DIODE 155120 5714 1 554 596 21 SWITCH KEY BOARD SHIFT 0720 8 719 912 20 DIODE 155120 5715 1 554 596 21 SWITCH KEY BOARD BAND 717 1 554 596 21 SWITCH KEY BOARD TIME FRQUENCY 0721 8 719 912 20 DIODE 155120 718 1 554 596 21 SWITCH KEY BOARD TUNING 0722 8 719 912 20 DIODE 155120 719 1 554 596 21 SWITCH KEY BOARD TUNING D723 8 719 912 20 DIODE 155120 0724 8 719 912 20 DIODE 155120 720 1 554 596 21 SWITCH KEY BOARD CLOCK 721 1 554 596 21 SWITCH KEY BOARD TIMER CONTROL FL701 1 519 517 11 INDICATOR TUBE FLUORESCENT 722 1 554 596 21 SWITCH KEY BOARD TIMER SET 5723 1 554 596 2 SWITCH KEY BOARD SLEEP 16701 8 759 239 79 TMP47C670N 1204 8724 1 554 596 21 SWITCH KEY BOARD AUTO MANUAL 1C702 8 749 920 59 A1QH30205 701 1 567 821 21 VIBRATOR CRYSTAL 4 19MHz 1701 1 410 521 11 INDUCTOR 100UH L702 1 410 521 11 INDUCTOR 100UH 1703 1 408 080 00 INDUCTOR 100 L704 1 408 080 00 INDUCTOR 1000 0701 8 729 900 89 TRANSISTOR 144 5 0702 8 729 900 89 TRANSISTOR DTCIA4ES 9703 8 729 900 80 TRANSISTOR OTCII4ES
13. BON SMALL 22 5 1 4 OF 882 1 249 335 11 CARBON MELF IK 5 1 8 Ri A1 249 401 11 R83 1 249 335 11 CARBON MELF IK 5 8 CARBON SMALL 47 5 1 4 F R84 1 249 335 11 CARBON MELF JK 598 1 8 R3 1 249 329 11 CARBON MELF 330 5 R4 1 249 329 11 CARBON MELF 330 5 1 8w R85 1 249 347 11 CARBON MELF 108 5 1 8 R5 1 249 329 11 CARBON MELF 330 5 866 1 249 335 11 CARBON MELF IK 599 1 8 887 1 249 347 11 CARBON MELF 108 5 8 R6 1 249 350 11 CARBON 18K 596 1 8 888 1 249 343 11 CARBON MELF 4 78 5 1 8 R7 1 249 329 11 CARBON MELF 330 5 1 8w R89 1 249 335 11 CARBON MELF IK 5 1 8 R8 1 249 332 11 CARBON MELF 560 5 1 8w R9 1 249 352 11 CARBON MELF 27K 5 R90 1 249 343 11 CARBON MELF 47K 5 1 8 810 1 249 329 11 WGI 891 1 249 335 11 CARBON MELF IK 5 1 8 CARBON 330 5 1 8 R92 f 1 249 401 11 CARBON SMALL 47 5 R101 1 249 341 11 CARBON MELF 33K 5 8 811 1 249 350 11 WG IT R102 1 249 332 11 CARBON MELF 560 5 1 8 CARBON MELF 18K 5 1 8 R12 1 249 329 11 WG IT R103 1 249 335 11 CARBON MELF IK 5 CARBON MELF 330 5 104 1 249 328 11 CARBON MELF 270 5 1 8W 813 1 249 334 11 WGIT R105 1 249 343 11 CARBON MELF 47K 5 1 8w CARBON MELF 820 596 1 8 R106 1 249 339 11 CARBON 228 5 1 8 14 1 249 352 11 R107 1 249 343 11 CARBON MELF 47K 5 1 8W CARBON MELF 27K 5 1 8W R15 1 249 347 11 R108 1 249 323 11 CARBON MELF 100 5 8 CARBON MELF 108 5 1 8
14. C5 024 5 926 7 961 4 962 4 063 EA 964 0 4 065 0 5 066 0 4 081 c5 082 C5 083 B 3 Q84 2 085 C2 986 C2 Note parts extracted from the component side e indicates side identified with part number e WG West Germany Model e IT Itarian Model Note All capacitors are in unless otherwise noted pF uuF 50WV or less are not indicated except for electrolytics and tantalums All resistors are in amp and W or less unless otherwise specified A internal component e nonflammable resistor 1 Note The components identified by mark or dotted line with mark are critical for safety Replace only with part number specified adjustment for repair e Power voltage is supply from TA H300 Voltage and waveforms are dc with respect to ground under no signal detuned conditions 6 mark FM AM lt gt LW e Voltages are taken with VOM Input Impedance Voltage variations may be noted due to normal produc tion tolerances Signal path WG West Germany Model Itarian Model ST H300 Ref No Part No Description Ref No Part No Description Q3 8 129 230 99 WG IT TRANSISTOR 2SC2669 0Y R43 1 249 363 11 CARBON MELF 2208 5 Q4 8 129 230 99 WG IT TRANSISTOR 2SC2669 0Y R44 1 249 339 11 CARBON MELF 22K 5 1 8 Q21 8 729 119 78 TRANSISTOR 2SC2785 HFE R45 1 249 338 11 CARBON MELF 18K 5 1 8W Q
15. C68 1 163 111 11 CERAMIC CHIP 00015MF 20 25V 25 16 C69 1 163 063 00 CERAMIC MELF DU22MF 1 163 063 00 CERAMIC 0022MF 2 16 1 163 063 00 CERAMIC MELF 0022MF 2 C72 1 163 063 00 CERAMIC 082238 2 1 C23 1 163 063 00 CERAMIC 002MF 25 16 C81 1 102 961 00 CERAMIC 27PF 596 50 16V C82 1 102 961 00 CERAMIC ZPF 5 50 C83 1 163 059 00 CERAMIC MELF 001 20 16 1 163 059 00 CERAMIC MELF 20 16V 50v 1 163 059 00 CERAMIC 00IMF 20 16V EM 16 686 1 124 477 11 ELECT 20 16 18 C87 1 163 058 00 CERAMIC MELF 00 20 16V 50 C88 1 163 059 00 CERAMIC MELF 0 20 16V C89 1 124 443 00 ELECT 209 10 25V C101 1 124 925 11 ELECT 22MF 209 SW 12V C102 1 124 463 00 ELECT Q1MF 20 50 50 C103 1 163 059 00 CERAMIC MELF 001 20 16V C104 1 163 059 00 CERAMIC MELF 001MF 2099 16V Sov C105 1 124 477 11 ELECT 47 20 16 50 C106 1 136 173 00 MILAL 047 5 50 C107 1 124 463 00 ELECT 0 IMF 20 50V 58 C108 1 163 063 00 WG T 50v CERAMIC 0022MF 50 50 CFl 1 567 389 11 FILTER CERAMIC 50 CF2 1 567 389 11 FILTER CERAMIC 1 567 389 11 WG IT FILTER CERAMIC CF21 1 577 075 11 OSCILLATOR CERAMIC I9KHz EN 2 1 404 853 11 TRANSFORMER IF CERAMIC FILTER 50 50 CNJ1 1 568 276 11 SOCKET CONNECTOR 10 lev CNJ2 1 564 709 11 PIN CONNECTOR SMALL TYPE 7P CNJ3 1 568
16. ERAMIC 5 50 C707 1 136 173 00 FILM 047MF 5 509 R711 1 249 429 11 CARBON 108 5 1 4 C708 1 136 173 00 FILM 047MF 5 50 R712 1 249 429 1 CARBON 10K 5 1 4 C709 1 164 159 11 CERAMIC 01 50 R713 1 249 429 11 CARBON 108 8 C710 1 164 159 11 CERAMIC 0 1MF 50v R714 1 249 429 11 CARBON 10K 5 R715 1 249 429 11 CARBON 10K 5 1 4 08701 1 233 130 11 COMPOSITION CIRCUIT BLOCK 8702 1 233 148 11 COMPOSITION CIRCUIT BLOCK R716 1 249 429 11 CARBON 10K 595 1 4 CB703 1 233 187 11 COMPOSITION CIRCUIT BLOCK R717 1 249 423 11 CARBON 33K 5 1 44 CB704 1 233 148 11 COMPOSITION CIRCUIT BLOCK 718 1 249 429 11 CARBON 10K 5 1 4w R719 1 249 429 11 CARBON 10K 5 CN701 1 568 279 11 SOCKET CONNECTOR 4P R720 1 249 429 11 CARBON 10K 5 4 CN702 1 568 281 11 SOCKET CONNECTOR 6P CN703 1 568 281 11 SOCKET CONNECTOR 6P R721 1 249 411 11 CARBON 330 5 R722 1 249 441 11 CARBON 100K 5 1 4w 0701 8 719 912 20 IT DIODE 155120 8723 1 249 441 11 CARBON 100K 5 0702 8 719 912 20 AEP UK WG DIODE 155120 R724 1 249 441 11 CARBON 1008 5 0703 8 719 912 20 IT DIODE 155120 R725 1 249 441 11 CARBON 10K 5 0708 8 719 912 20 DIODE 155120 0709 8 719 912 20 DIODE 155120 R726 1 249 441 1 CARBON 100K 5 1 4 8727 1 249 421 11 CARBON 22K 5 0710 8 719 912 20 DIODE 155120 0712 8 719 912 20 DIODE 155120 88701 1 233 125 11 COMPOSITION CIRCUIT BLOCK 0713 8 719 912 20 DIODE 155120 0714 8 719 912 20 DIODE 15
17. MF 2096 C35 1 130 481 00 FILM 00068MF 5 C36 1 123 382 00 ELECT 33MF 2096 637 1 123 875 11 ELECT 10 20 C39 1 163 059 00 CERAMIC MELF 0 01MF 20 C40 1 124 463 00 ELECT O 1MF 20 C41 1 123 875 11 ELECT 10 20 C42 1 163 059 00 CERAMIC MELF 0 01MF 20 C43 1 126 176 11 ELECT 220MF 20 44 1 163 059 00 CERAMIC MELF 001 20 45 1 123 382 00 ELECT 33MF 20 46 1 161 375 00 CERAMIC CHIP 00022MF 20 C47 1 163 170 00 WG IT CERAMIC CHIP 0 0047MF 20 C48 1 123 382 00 ELECT 33MF 20 C49 1 161 375 00 CERAMIC CHIP 0 0022MF 20 C50 1 163 170 00 WGT CERAMIC CHIP 0 0047MF 20 C51 1 124 477 11 ELECT AMF 20 C53 1 163 105 00 CERAMIC CHIP 33PF 5 C54 1 101 005 00 WGIT CERAMIC 0 022 C61 1 163 063 00 CERAMIC MELF 0 022 C62 1 163 063 00 CERAMIC MELF 0 022MF C63 1 163 063 00 CERAMIC MELF 0 022MF CAPACITORS The components identified by pF uuF rk or dotted line with mark RESISTORS are critical for safety Replace only with part number 9 Allresistors are in ohms VEL specified F nonflammable COILS mH UH uH SEMICONDUCTORS In each case U for example UA BA UPA WG West Germany Model e IT Itarian Model uPC UPD uPD Ref No Part No Description 1 163 063 00 CERAMIC 0022MF 25 C65 1 163 063 00 CERAMIC MELF 0022MF 25V 25V C66 1 163 063 00 CERAMIC MELF 0022MF 25 16 C57 1 102 120 00 CERAMIC 00018MF 10 50 16V
18. SERVICE MANUAL This set is the tuner section in MHC 3500 AEP Model UK Model MICROFILM SPECIFICATIONS System FM stereo FMAM superheterodyne tuner FM tuner section Tuning range 875 108 MHz Antenna Telescopic antenna Antenna terminals 75 ohms unbalanced Intermediate frequency 10 7 MHz AM tuner section Tuning range MW 522 1 611 kHz LW 144 288 kHz model MW 531 1 502 kHz LW 153 279 kHz except Italan model Antenna AM loop antenna Externa antenna terminals Intermeciate frequency 450 kHz FM AM TIMER TUNER SON ST H300 MODEL IDENTIFICATION Number Label SONY ST H300 FM STEREO FM AM TUNER AEP UK Model West Germany WG 4 IT Model IT e Power supply for service Since this machine has no power source in itself the power is supplied form AMP TA H300 used for this series As shown in the following table this machine requires 4types of voltage and supplying each type of voltage separately makes complicated connections Accordingly make connection with TA H300 at time of service such as electrifying repair AC 3 9V FL tube filament voltage DC 24V Display controller 1C701 grid voltage DC 5V Display controller IC701 Vcc DC 13V PLL control voltage e Service mode for checking the timer ON OFF 1 Connect with AMP TA H300 and set the power switch of TA H300 to the state of STANDB
19. U sua _ E o SIRCS 4 CONTROL SWITCH 12 13 14 15 LI I COM NOUO r JUN 1204 CONTROL I COCOCOCOUOCO COCA UC 747 7574 0701 703 0708 710 0712 714 0716 720 4 MODEL MUTING Note capacitors are in LF unless otherwise noted pF uu F 50WV or less are not indicated except for electrolytics and tantalums All resistors are and W or less unless otherwise specified Power voltage is supply from TA H300 Voltage and waveforms are dc with respect to ground under no signal detuned conditions no mark FM Voltages are taken with VOM Input Impedance 10M Q Voltage variations may be noted due to normal produc tion tolerances WG West Germany Model IT Model NOTE The mechanical parts with no reference number in the exploded views are not supplied SECTION 4 EXPLODED VIEW Due to standardization parts with part number suffix XX and X may be dif ferent from the parts specified in the ST H300 The components identified by mark or dotted line with mark A are critical for safety The construction parts of an assembled components used ONNE part are indicated with collation Color Indication of Appearance Parts ber in the remark column
20. Y 2 Set the time of tuner to a proper time any time 3 Press 3 switches simultaneously namely TUNING SHIFT and ENTER 4 FL tube display lamps lighting _ i 1 sec 10 23 0 5 sec 05 sec channel POWER ON L 3 sec 0 00 POWER OFF 5 End ST H300 Caution for Service Reset of IC701 The display controller IC701 is reset by short circuiting both edges of C702 0 474 F while power OFF and discharg ing electricity After resetting the following frequencies are pre set to the memory When the repair is completed return the memory to the preceding state content FM AM MW Lw AEP UK modol WG Italian model AEP UK model WG Italian model Al 87 5 MHz A6 531 kHz 522 kHz 81 153 kHz 81 1444 kHz 2 88 0 MHz 7 603 kHz 7 603 kHz B2 171 kHz 82 162 kHz A3 98 0 MHz AB 999 kHz 999 kHz 83 216 kHz 83 216 kHz A4 100 0 MHz 9 1404 kHz AQ 1404 kHz 84 261 kHz 84 270 kHz 5 108 MHz AO 1602 kHz 1611 kHz 55 281 kHz 85 288 kHz SECTION 1 GENERAL 1 1 PARTS IDENTIFICATION m Lt Display window TIMER CONTROL button SLEEP timer button TIMER SET button CLOCK button BAND selector TUNING buttons PRESET TIMER buttons SHIFT memory page select button ENTER NEXT button STEREO MUTING button MEMORY button AUTO MANUAL tuning button TIME FREQUENCY button j Remote control
21. m uoe3 A9N305384 5534 8 6 Amdsip eu P sun 0 fa posue putt jp Bu 140220 uondrusatu amod eu tunejado sms AX3N U31N3 58 4 6 re 53 1 1 9994 B3WU 13S3u4 24 5 Z HOOT 99944 Duusow ul 52 6 O WS endum 49019 umes 5 2 6 1X3N H31N3 528 Ce DEZ 00 AR 28652 1 m 7 SNIL13S 83013 PRINTED WIRING BOARD PANEL SECTION 1 9 Semiconductor Location Ref No D701 D702 D703 D708 D709 D710 D712 5713 5714 5715 5716 0717 0718 0719 0720 0721 0722 5723 0724 15701 15702 0701 0702 0703 Location 2 82 C7 56 SECTION 3 DIAGRAMS 29 52 8 09 T p T o o o5 d ST H300 BOARD CNJI TO TUNER BOARD CNJ TO TUNER BOARD CNJ2 i PRESET OW ORA Note o o p parts extracted from the component side WG West Germany Model IT Itarian Model 3 2 SEMICONDUCTOR LEAD LAYOUTS DTA114ES 2SC2785 HFE 2SK246 GR3 155120 DTC114ES DTC144ES et comes 25
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