Blaupunkt XT-240, Service Manual

Page 1: ...m X 240 Kundendienststellen Seite 2 3 4 5 6 7 8 9 10 15 16 18 19 20 21 22 23 25 26 27 28 1liiiil I liiiil 1liiii I tiiJ I iii I ii Table of Contents Technical Data General lnstructions Muting Stereo AM Discriminator Alignment FM IF Alignment with Sweep Generator FM IF Alignment without Sweep Generator AM IF Alignment Measuring and Alignment Points FM AM HF Alignment Schematic Sem i Conductor Conne...

Page 2: ... ickung Obertragungsbereich SIN Ratio Mono Stereo bewertet Stereoschaltschwelle AM Bereich MW LW Empfindlichkeit MW S N 26 dB LW S N 26 dB Bandbreite Selektion ZF Sicherheit Spiegelwellenabstand Abmessungen Gewicht Gehause grau bronze Frontplatte hellbronze Wert Value 220 V 50 60 Hz 87 5 108 MHz 0 9 µV 30 µV 140 kHz 60 dB 0 15 0 2 3µV 60dB 80dB 70dB 50dB 30 Hz 15 kHz 72170 dB 10µV 510 1620 kHz 145...

Page 3: ...Verbesserung mehr erzielt wird 2 7 3 Fig 1 3 Disassembly Adjustment and Alignment lnstructions Disassembly of the unit 1 After removal of chassis cover and the bottom plate all assemblies are readily accessible 2 For the alignment of the PLL type oscillator the fixing screws of the plate have to be removed and the latter tilted Nevertheless the board remains in an operative state In this case a su...

Page 4: ...h oben darf von der Schrittzahl nach unten nur urn max einen Schritt abweichen 5 HF Signal groBer 10 mV wii hlen Wiederholung der Pri ifung nach Punkt 4 vornehmen 4 Muting Stereo AM Discriminator Alignment Measure equipment required 1 Stereo signal generator 98 MHz 2 Signal generator AM 800 kHz 3 AF voltmeter Ri 1 MQ 4 Frequency counter 228 kHz I Muting alignment 1 Connect signal generator to ante...

Page 5: ...he screen width Make the response curve completely visible by corre sponding chcice of the Y amplification Subsequently proceed to distortion and zero point setting Dr Fig 2 Oszilloskop Oszillosco e y 0 X Test and alignment points see Fig 5 6 FM Alignment with Sweep Generator Wobbelgenerator Abgleichelement MeBmittel AnschluB Abgleich auf Sweep generator Alignment element Measuring Device Connecti...

Page 6: ...ikewise described When obseving all particular instructions satisfying results will be obtained by this kind of alignment too lnstructions concerning alignment Test point for connecting to the sweep generator is reach able through a hole from the printed side of the plate 1 Prepare test circuit according to Fig 3 2 Adjust tuner frequency to an unoccupied band section 3 HF input voltage should be 1...

Page 7: ...ted with a less sophisticated measuring set signal generator and LF voltmeter this type of alignment is described as well Satisfying results are able to be reached even in this case whenever directed as per the relevant instructions lnstructions concerning alignment 1 Prepare the measuring upset according to Fig 4 2 Adjust the tuner frequency to an unoccupied band section 3 Unilateral unsoldering ...

Page 8: ...MeB und Abgleichpunkte Fig 5 Fig 6 Fig 7 a C7C6 L6 L5 L20 L11 12 8 Test and Alignment Points r FM MeB E IJ I www tvsat com pl this material copyrighted by its respective manufacturer ...

Page 9: ...000 OOO MHz Frequencycounter 20 Hz anlatMP 3 8 Volt DC Voltmeter anlatMP 28Volt NF Voltmeter und auf maximale Oszilloskop an MP Spannung AF Voltmeter and einstellen Oscilloscope set to max at MP Output 1 Volt DC Voltmeter anlatMP 25 Volt NF Voltmeter und auf maximale Oszilloskop an MP Spannung AF Voltmeter and einstellen Oscilloscope set to max at MP Output NF Voltmeter an MP Parameter SIN 6 dB co...

Page 10: ...enl mun durch Originolle11 ersetzt werdenJ Security comoon nt musi be reploced by or1ginal part iZ ł So gekennze1chnete Widerstcindc berinrlen sich in einer D1ckscn chtschaltung Res1stors morked in th1 monner ore situoted 1n o th1ck film circuit Holbleiter AnschluOpunkte Semi conductor connection C E Input J 2 l Oulput BC 23 7 BC 23 8 BC 30 7 BC 30 8 BC 327 BC 338 SC 413 BF 324 BF 451 BF 936 BO 51...

Page 11: ... 2 7k 8105 330 c101 I c145 10n V Nur be1 CA3189E I60 H cios4 7k H t it r Jlll b 1 J F113 lor CA 3189Eonly R148 u L157 0156 1N4148 R156 68k i e 1 6 1 0 00 mn 0 1 rf ł 1 ra 2 J R102 lOn 16 1 I SFE I0 7MHz FlOl 750 Vlll E5M ll50P 111 I 8111 1 3 1 a 47 I 560 150k R153 3 3k UIO 1 1 1 I I1 03 L_ J Signalteilplatte Signal unit board l li si 1 91 19 3 1 _15k Z2k_ 290 R290 R292 P81011 10n 47 10k 0 19 1 189...

Page 12: ...1 0156 0157 163 _ f µ 1c 5 01 c 5µ81 RJ5 98k1 I iiis lOk V58I8 110µ I 10n rrnn L L i j2 I Rll 7 I L __ _J l L __ _J 1Nl 1l 8 1Nl 1l 8 2Z0 11ok CJ6 H_t j r J9k 39 V14B oł M FM H e e 580 V585 s cc IJ C l _J 11 0 J cl 8 R146 8C41 b t156 R159 Rl6J 1 NµL 1k r l 10µ 68k 100 R162 5 1k 3 l 7kl I Rl 5 B l 13 ns c itg I ll 6 R156 r R2l 3 Sk v I i J t h oti e 8 v mµo rł 7vc 1 c t LJ_ 1 190 190 JO i i 1 5 Iµ ...

Page 13: ..._____ P110 9 MONO V354 P81013 S __ 1 1 BC 238 RJ55 _ 107 10k 1r08FM RSDO 0488 R488 P 2011 lll 1 8C IJ k _ IH 41_48_ __ 1Q _ 0k Yr 9 P 400 R489 _ rn35 g lOOk 113 l _ 5 01 r50J 1 10 s 1 1 1 8 2k 8 2k 1N4148 P210 1 lOSi1 LC W i _J UB I R475 170 R482 200k R483 6 Bk R484 180k R495 l3k Jl l i V464 L 358 5 1 1 4 8 7 iR486 180k V471 w1 J l so BC238B 100k P12017 n 1 msJ 10 I 106 M W V475 BC 238 B R477 12v ...

Page 14: ... Slort 1op V346 BC23B R3 6 5 6k l l 1 16 V345 RJl J 5 5k 16 1s 11 10 n V349 5N 75 66 1 2 8 6 7 I MOS s 1 R351 R352R353 5 6k 5 6k 5 6k V340 s l l rn i oi z I MQSI R325 Ok 13 1 11 12 l o 16 2 V350 16 s 1 l _ __ _ _ r r t v5oo7G 7 10 6 9 I Vl I dR40J 99 18k _ _ _ _ V398 I li 10 l9 9 tRJ97 I 405 B B i l 11 rns k 5 6k l 82 I 19 20 n 27 2 V397 UJO M s 6 8 9 10 U12 Cl OO 01µ r r ___ H 25 26 26 21 MQSI 11...

Page 15: ... 9 1 28 I MOSI 2J 22 21 36 34 25 8 12 24 18 15 V 1 4007 SC 80 311 MOS 3 I 5 6 19 16 11 9 8 22 23 f 1 l _____dR40l V C U Ej99 18k r t t 1 R 99 4 7µ RJ9710k I 8405 1 H 397 i 05 R398 047µ 1 7µ 100k U5 388 2388 U6 17 18 I I I I 7 I V403 74 905 5 s 17 MOSI 0405 Ol OO 1N4148 lNl l4 8 l l M 11 łffOO IJV U12 I I I I W400 Hybram lcJJ2 101µ g lN li Uberhubschalter mit Netzschalter 0321 gekoppelt ___ 1N4148 ...

Page 16: ... F134r u J T I 021 11c32 J l J c1ao 1ł zrc 66 N iJ E s a 1 cza c31 cs00 łł 1 s cV126 IIDJt a vi4 a __ Il 6 11 E B r 00 10 LJim811 C134 r 00 2 1 8 9 F132L J i _ t n nS28 C17O ID I C131 Il1ll io a Il C1621 J 128 I L 8 il r F101 łl C27 ll C29 g f _ _ Yi6 b V24 t i ęęi c173rłłi I R144__ Nłl cq m 12 1 3 2 c l B 6i61 R121 C115 IE R109 C100 o1 7C19 lu J łP4 RR _ 1 f 1 tH11e titV107 rO r Rllh 0 109 c1 _ _...

Page 17: ... 4 0277 Jl dh6 1 JT s Lr M _Jł 1 8 9 F1Jl iiJ_J i _ r C239 I C170 łl C131 ILlJY ic c 0 2 RlOS yz77c 6 20 I t Drskrrmrnatorpl 1681 J IC128 L a 1 _ FlOl qij r 1 tJ7 Drornrnrnator i u C119 c J V278 t en 1 ł boacd I TT T Jl i O Ó b Cqs u li Ll 6 J0 25 C251 rłłi r filfil g Nł j 0 m C178 V275 J fi 0 P2l0 Tc253 il 0253 c IbibI miR121 jlf IE R109 o li V177 V270 mm 1 8 M zl _ 1 i i t c V1 7 1R1111 m109 EiO...

Page 18: ...gnal unit board 137 ł pl83 1 c286 r illB ł rzs4 ei ill P810 11 1 11 M i an Prozessorplatte Lfs1 o C290 L J3 R2928 J at P m a boa d L J L 7 B illj Gehause F212 C2B H Signalteilplatte Case F212 0281 J 36 S1gnal unit board Diskriminatorplatte C289 8 628 301 345 B 1345 H2 18 Component Plans Tuner Osz FM Osc FM Osz AM Osc AM Signalteilplatte S1gnal unit board www tvsat com pl this material copyrighted ...

Page 19: ...F Pegel detektor Tu111rn1 Anz8KJ Schaltkre1s 13 8 TCA 4500A T1Plpal 9 TDA 1046 13 3 3k 4 19 9 10 11 15 7 4 12 11 6 O Volt ef 5 10 IC Block Diagrams 6 NF Regelverstarker M1 11nq 5 1rite 11e Spannungsregelung Stdb 16 9 www tvsat com pl this material copyrighted by its respective manufacturer ...

Page 20: ...e IC U 343 M V397 Th is IC is scanned periodically by the processor 2 All stations are stored within the memory EAROM ER 1400 W400 At time of a program fetch the sequence starts with the emission of the program symbol to the station display the sequence is continued by the call of the divi sion ratio from EAROM terminated by the emission of the fai Iure symbol E at the frequency display In additio...

Page 21: ...on start stop is activated from the remote control TA a pulse via an inter face is transmitted to the electronical section of the record player and the input selection of the input amplifier is switched to the record player In case of TB START the recorder is started in an analogous manner and the input selection of the input amplifier is switched to the recorder input Whenever other push buttons ...

Page 22: ...ion of the C MOS Clock Timer functions The clock of the XT 240 represents a com pletely self supporting unit with the mains frequency as time base in case of mains failure there is automatic reversion to a 32 kHz crystal controlled time base As buffer battery of the clock is used a NiCd type accumulator The control ele ments of the clock act directly to the clock component Within this component ar...

Page 23: ...housing 7 pole 8664360122 OC 44 Steckerwanne Plug body 8664360142 PN 45 Steckergehause 9polig Plug housing 9 pole 8664360123 OC 46 Steckerwanne Plug body 8664360147 OF 47 Steckergehause 12polig Plug housing 12 pole 8664360124 OD 48 Steckerwanne Plug body 8664360144 OG 49 Steckergehause 20polig Plug housing 20 pole 8664360129 OG 50 Winkel Steckerwanne Angular plug body 8 664360357 BO 51 IC Fassung ...

Page 24: ...39 V120 8905955527 JJ V44 464 8905955524 CB V495 8905955889 JE V53 8 905955542 GH V324 8 905 955 547 BO V427 8 905 955 497 BD V326 403 c J 8 905 955 597 AH V302 408 8 905 955 797 KO V450 8 905 955 892 KN V458 8 905 956006 KK V306 8 905 955 784 LO V349 370 8 905955571 EG V 111 8 905 955887 AH V 111 8905956222 V285 8905901805 CH V165 8905901870 KK V225 8905901847 KK V2010 8 905 955 733 KO V397 8 905...

Page 25: ...L 190 191 8 624220510 OE 205 Spule L 192 251 253 8 634220720 AA 206 Spule L 194 fVVV _ 8 634242662 207 Spule L201 8634242 663 208 Spule L226 287 8624240 802 AA 209 Spule L443 458 8 634 220 702 NR 210 Ferritperle L232 8 908 313 140 KO 211 Keramikfilter SFE 10 7 MS F 113 8 906193580 AA 212 Keramikfilter CFM 2452 5 AL F209 8 634242 660 241 5kQ R 162 8 901506202 OE 242 10 kQ R168 292 q 8 901 509163 AD...

Page 26: ... B AUX Externe Gerate I Auxiliary 1 1 lautstilrke I Volume z J Hohen I lreble 5 9 6 9 T1efen I Bass 7 R 8 l Bolonce z 1 o z 1 J z J 5 6 5 7 6 B 7 J 1 B z 9 J 1 1101 z 1201 5 6 7 8 4 I z oID Aufnahme I Record J Rucklouf I Re wind schneller Vorlaul Fasl forward 5 6 7 B 5 26 HiFi Remote Control SO 51 52 53 54 55 Tl t e t t I i T2 _ 1 I T3 _ I I T4 TS l I I_ 1 _ I T6 T7 LA I li I t I_ li T8 7 8 9 I U3...

Page 27: ...T 240 Enclosure Beilage XPA 240 Enclosure XPA 240 PHONO TUNER TAPE 1 TAPE2 MONITOR OUTPUT _ e ID e o o o o o o L J L J Beilage rund XC 240 Enclosure round XC 240 REMOTE o Po INPUT L J L J Beilage XT 240 Beilage Enclosure Enclosure XPA 240 MA 240 CBCBCBCB 7 70 LA 1 L LA2 L J L J 27 www tvsat com pl this material copyrighted by its respective manufacturer ...

Page 28: ...8 10 71 3011 HANNOVER LAATZEN Karlsruher StraBe 6 Telefon 0511 8 60 61 3500 KASSEL ErzbergerstraBe 32 Telefon 05 61 7 29 84 5000 KÓLN 90 PORZ HansestraBe 80 Telefon O 22 03 3 02 O 6800 MANNHEIM KAFERTAL EdisonstraBe 22 Telefon 06 21 73 50 47 8043 MONCHEN UNTERFÓHRING FeringastraBe 14 Telefon O 89 9 26 51 8500 NORNBERG LANGWASSER GroBstrelitzer StraBe 2 Telefon 09 11 8 02 51 7000 STUTTGART FEUERBAC...