Bang & Olufsen BeoSound Century Service Manual Download

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Summary of Contents for BeoSound Century

Page 1: ...lufsen BeoSound Century Typ 2651 2652 2654 265 l SERVICE MANUAL CircuitDescription 3540178Danish 3540179English 3540180German 3540181Fi nch All manuals and user guides at all guides com a l l g u i d...

Page 2: ...18 5 30 5 18 5 30 s 18 5 30 5 18 5 30 5 18 5 30 5 19 5 31 5 19 s 31 5 19 5 31 5 19 5 31 5 20 5 32 5 6 5 5 5 5 5 6 5 5 5 7 5 7 5 7 5 7 5 7 5 7 5 8 5 8 5 8 5 8 5 9 Disassembly Glass door 5 1 Front fabri...

Page 3: ...ut Amplifier right diagr K page 2 21 2 Door sensor transmit diagr L page 2 22 2 Amplifier power supply diagr M page 2 23 3 Microcomputer rr1 4 oisptay Keyboard rJ rrl l 5 Power Supply Motor Control di...

Page 4: ...11 Re_deck electronic T1 12 Oscillator diagr D page 2 14 17 FM Front end diagr A page 2 10 Seenfrom the back 2O ooor Sensor receive diagr L page 2 22 21 active FM Antenna diagr I page 2 19 22 Crossove...

Page 5: ...tivity 1 4 rV26 dB S Nmono Qulgting sensitivity 45prV50 dB S Nstereo Signal to noise ratio 66 dB mono 63 dB stereo TotaiHarmonicDistortion 0 8 o mono 1 0 o stereo Freqency response 40 I5 000Hz 1 5dB C...

Page 6: ...120sec C60 50 14 000 Hz 3 dB chrome 53dB ferro t 62 B ferro with noisereduction 56dB chrome 64 dB chromewith noisereduction 3ohD31315 Hz 3 5 d B 1 k H z 2 d B 7 0 d B 80 kHz 12cm 5 and8 cm 3 Bitstrea...

Page 7: ...Bang 0lufsen wtRtNG orr o rrJ tf WIRING OFTRANSFORMER Type2551 EU230V PCB10 Mains ffifr ffiX ffiil ffiX ffiil ffiil ffiil 1 Qve rN All manuals and user guides at all guides com...

Page 8: ...1 3 WIRING OFTRANSFORMER 1 3 ffim ffiil ffiil ffiX reil J l 1 I I Type 2552 GB 24OV PCB10 Mains All manuals and user guides at all guides com...

Page 9: ...1 4 1 4 WIRING OFTRANSFORMER Type2553 cDN USA120V PCB10 Mains ffiil ffiil _ I g 3 l QvnrNS All manuals and user guides at all guides com...

Page 10: ...5 P D EE E 1 D COMPACTDISC Raise the CD clamp Lowerthe CD clamp Startplayingthe CD Display track no Browsethrough tracks Select track number ex 5 Pause the CDplayer Resume playingafter stop or changed...

Page 11: ...ording pausemode display blinksalternately Auto reversestatus Auto reverseonlofl display indication blinks when auto reverseisoff Startrecordingtrack4 ex on CD onlyif CDisselected assource Stoprecordi...

Page 12: ...IRIN WIRING DIAGRAM 5 D ER SI PP Y A G E A R llFl saR P E I V R I Q va xs CL AN1PFR L OOR M O T I R C O N I R C L M T I A I A B L F V T 3 A 9lt 2 3 ricttttit tP 7 D I S P T A Y E V B I A R I All manua...

Page 13: ...2 2 J C D I VEi 3 t c t o r i r 4 P J l f r r r ra ANlPL 1I I IR AUX A N I N A I V E 5 I G N A L TURN TABLE I 1O OR 91t 2 I rlNrn ffi 6 5 5 6 6 c Dl 7 D I t SC i _ r i g J3 I r az t r All manuals and...

Page 14: ...2 3 2 3 BLOCK DIAGRAM 2 i BLOC BLOCKDIAGRAM FORPOWERSUPPLY T R 3 ZT X 7 8 8 8 F JBj rP32 r t5vA 5 V A P 2 2 230V I A NS All manuals and user guides at all guides com...

Page 15: ...1 6 6 A or otr l 5 V P 3 0 I I e 2 2 B C 3 2 o N t D 5 d T R 8 B C 3 2 I 7 TAPE 5vB l i r f Hs rv t I l r 2t B 33 7 6 t R RECEIVER 5 V t l Lr_iP4J I I I TUNER 5 V T A l 0 v aal 1 B C 5 5 8 C l P 4 2...

Page 16: ...A I C STROBE2 S C L l 41CROCOI 1PUTER 3 I C 2 S O H z rn Lll STROBE CLOCK D A T A C E COI JNT ER F M O N S T O P S I G KEYBOARD DATA KEYBOARD STROBE L E D C L O C K L E D D A T A l i r r O f o F L O...

Page 17: ...RCH LEVEL T U L E F T 3 r 3 CROS 5 t 0 6 5 r 2 9 1 A N T B I R D Y F I L T E R 1 3 MONo STEREO 2ND P C B 3 f t 0 6 STALK MUT E D A T A CLOCK COUNTER 1 t 4 FM TUN VOLTAGE D I S P L A Y K EY B O A R D z...

Page 18: ...L I T T NOISE REL CIION NOlSE REDUCTION t 1 R I G H T V R 22 3 2 VR VR I lLr I E FElCR DECK A B NS NS V R VR V I l 3 o t l o f l f L l F I LOGrc I r J l l f PAUSE MSS B DE K V R 63A P B LLVEL B REC R...

Page 19: ...DIAGRAM 2 5 BLOCK DIAGRAM Bang 0lufsen i765 l atr I f vrir t DECK 8 REC P B IA5 ED E O U A I Z A T I O N R E C L DECK B REC P B a I Z A T I O N P 8 M U T E All manuals and user guides at all guides c...

Page 20: ...T E N R 1 1 2 E St R E G 1 1 2 772A f f 2 0 1 1 2 PAUSEMSS P B B D E C K A B P B A P B M T J T E p s c n z F E E O U A L I Z A T I O N C R F E B I A S C O R R E C T I O N C R F E H S S P E E DE I U A...

Page 21: ...nEc N n PAUSE l 4SS P 8 B D E C K A B 712A t xo c a e P B l V t l T F P 8 C R F F P B 1625 W I N D REl ND a c A S 4 F E c R t t 1 t t EOUALIZATlON CR FE BIAS CORRECTION CR FE _ _ _ _________ H S 2 t s...

Page 22: ...H O T O D I O D E S I G N A L PROCE SSOR _l c _ D S C M O T O R arcrsos lll u I I D R I V E rx3 1f r L J NlONITOR DIODE 8 I C 7 4 0 2 R A D I A L E R R O R PROCESSOR _ H 8 r c 7 8 4 3 f TURNTABLE N l...

Page 23: ...D E C o D E R F I L T E R A N DD A c 6 0 25 2 4 9 0 5 1 B r c 7 8 8 25 S E R V O P tr t a 2 9 2 3 2 3 f 3 6 3 0 t 7 3 8 3 uCONTR0LLER 8 r c 7 8 0 2 R A D I A LE R R O R 8 I C 7 8 0 0 P H O T O D i O...

Page 24: ...AM FORAMPLIFIER L R TREBLE POWER AMP OUTPUT T R E B L E r _ l i 22 ecrrvt cROssovER NErwoRK rc I B A S S E X T E N S I O N 2 I C A 7 tr U LEFT E or qccnM OOJ FP 5ON DI F F E R E N C E 2 a P F T L T E...

Page 25: ...0 1v EURoPE 522kHz l lv 0 3v EUROPE 279kHz 8 5v 0 lv Etn0PE lS3KllZ lV 0 1V EUROPE l7lfiHz 8 5v 0 lY USA 530kHz lY 0 3v USA 522KHz l IY 0 3v JAPAN l829kHz 8v 0 3v JAPAN Fx Ftl Fil FM Iff t t LW LU tt...

Page 26: ...CTOR SEARCH LE EL t0 0A0 PC83 J S 111 _ 456kHz ffiffiffih 1 i _ t l 0y L l 0v l lll ru Li Y l u FU i8n AM sigr 7113 r 3151 r ONLY FORAY A ONLY FORFM x oNLYFoRUSA Q xorronusr L All manuals and user gui...

Page 27: ...0l il3 6102r 1 6109F22 6121tll8 6t23il7 tot 04 7102 c1 r03 E9 71018t6 t05n3 7106 J22 1107 L22 7108l t1 t090r1 7il0 L2 il t t 2 7il2 n5 7l13 iltz 7tt1 n2 u5 I1 7il6 C7 7t20 022 9160J7 sT0Pstc 310383 I...

Page 28: ...rGrrAL pcB DRAWTNG sEEpAGE2 13 RECORDER DIGITAL PART MODULE 7 RE DEC DELECTROIII C IODULE I I t t INTERC0NilECTI0N B0nB _ i9 PR TECTI N DI t E FoR7639 CRPSTRN f10T0R A 3645 PVCC 529 8C807 All manuals...

Page 29: ...RAM B J l 807 40 il z zv v l lEl3641 t N l tl _ l CLOCK INPU OS SERI8L OUI 8 S I S G ES H I F I REOI STER 8 8 I T S H I F T REGI STER OE 709 40 FROIl P I N 5V 366 I 3 8 1 3 All manuals and user guides...

Page 30: ...37 3639 364I 364 3 3 6 4 5 3 6 4 c a 6 4 8 3649 365r 365 5 3 6 5 7 366I 366 4 3565 D 366 3668 3669 3670 36 l 36 t2 36 4 3 6 5 E 36 7 3679 3 50 3805 3807 3 8 1 3 3 8 1 7 3820 F 3900 3901 3907 6 6 3 l 6...

Page 31: ...1 _ 1 I I I l g t t t H _ t E I 650 AA o uo n I t v rr T l I 1 2 J T E tl 764s V ll PBov _BcB17 ao___lrLlv P8 IN O LIFT C 1 OSCILLSTOR 05C CONTROL c2 lznrq j 2611 r rR nv zzN 9 rlh rFt 4V I ii ii lrr...

Page 32: ...l T I l vRD nUTE I L HS REC VCC REC I 2 VCC J P8 0 c I I rr vcc CR02 0 0ECK 8 VCC 0ECK fl 0 70P 5628 3v 3688 2 18 Tff T1N5 T L 2612 vR I l vRD 31_____ f trau 330N lYl 2614 36so vR T 1 I vR0 PBI EYEL...

Page 33: ...v 620 4 J O O 2624 2136 F lMU i 0l 80P iR 2623 SPIED EQUAUZAIIO I 3905 T100N l POHER I ol tN PVCC rnoI l77l I I I l F 1 iUTT I I z l 30N I VCC 3712 UIIIR RICI T VCC l t v r l v 7705 cuE REv r NR B NR_...

Page 34: ..._ I P 2 r L l T R 4 B C 8 4 8 B 2 3 I C I I 4 H C I 4 D I A P E O S C 8 461 4H2 8 5 O 2 M H z R 3 T R l s B C 8 7 4 0 C O N V E R T E R S M D P L A C E D O N S E C U N D A R YS I D E r 7 pi srr R z 0...

Page 35: ...DIAGRAM D 2 1 4 REDI DECK ELECTRONIC NODULE I I cflss It r l o o H l c0 0_ ARD C0UP1l lENlSlhE WEW REfr REC CT o GIAtr f 9 L fa Ht th Ir I l 01 I Ll I DT 0 r All manuals and user guides at all guides...

Page 36: ...t HFAr 1 I fE f P T I E r3 t tu I l 4 O n l m D J I I I C Corr rr l u v1 l_r________e _e c I l C 2 8 I 6 s rl _ IC7882 M C 7 8 0 5 C IC2882s l 2 I oon 5V lrnnrul f fifpl t ltul I l 1 r 1 1 3 T 2 I t...

Page 37: ...3 3 3 3 n __l A dI co ll y tr cr l2D q l 9 l C 2 8 2 O s o M l I r u u n c 2 8 t 1 P 1 8 0 r J v o a Y I f r c2821L F2822 2 5 v p g p 3 C O N 2 t 3 t n T l l o o n RADIAL AI4PLIF IER 3 P t S O t 4 P I...

Page 38: ...E t n 1 2 8 x 8 R A M 8 0 R I REOUEST ACKNOWLEDGE 83 CLK reI L I J I L rR 7a44 8C848 t 5 R E d r I 4 S I R D C284 7s i o 1 nHHH H R3848 D684 R388 s 5 1 5 2 7 0 4 6 5 7 Vngpr Vcgrnffi Voo VDon DATA SL...

Page 39: ...r t t l oul t l F44 4s p1ay 46 57 Voor Voon SER P A R 48X pP R 3 8 5 4 s I B J DEET4 C2854s 4n 7 R3862 WV t O DEEI 4 R3865s D6 Dl l E DIG TAL OUTPUT 2 8 7 s l C 2 8 5 5 s 3 o 3 A l l 0 0 n l l 0 0 n 2...

Page 40: ...o R I BC8478 I C I 3 l I l L a t y o L 2 R r 7 25 24 I I 5vsF I I TR2 BC84 7B 30 c22 I 1 I I I l r tJt f oo fo OPTO S T R O B E 2 I R R E C E I I C z P 8 3 C 5 2 8 3 2 k x 8 R O M 5 2 x 8 R A M uPR0CE...

Page 41: ...P l il I 1 I R R E C E I V E P 2 2 K E Y B D A T A I f ot l o l c t S r 5 70 I I t 8 70 l9 re oT J 8 R I P 2 t 1 GHTNESS P 2 8 1 H57 I c30 c22 I I co Ltl 0 l r I cr tr I J F o I Ht I c o l I O J__l F...

Page 42: ...L A YD R V E R BRIGHTNESS G54 ianrcHrNess l o I To I L E D D A T A n s I l3 1 Y I L 4 l f D5 o o 6 t r O E c i t D I t D8 m t 4 9 I D d O F l 0 3 i D t 2 1 l o 9 D r 3 l o I l r 4 z l f n D r 5 1 UJ F...

Page 43: ...GRAM H 2 1 8 D P J l r l s l 1 o 24 o_ td F a j D25 7 fl t _ t J Z O 1 ri v 5 D27 6 D28 z o o I J r l lil 3 c D t 2 l 6 0 D r 3 lit o D t 4 L z l o a D r 5 I_ o L F a P40 t1 All manuals and user guide...

Page 44: ...c ot C I c I C l C357p R57 2p2 3 r cv t l u T R I 2 4 c l B C 8 4 7 B o R 3 l 3 A C c r A N 4 P I TF TF R S O tt N D K I C D D n t r a S I N G e v u l r a l U b V j c J95_Jp7_l 9_Gi1 AUX I 4UTE l 2 Y...

Page 45: ...O r Rt4 7 R r 3 9 q t 5 b R545 5B 5 O n t 9 5B 5 0 n l E 8 8 5A ooo cn It u I l u r 5 1 2 1 o l tl t 22yl t C l 2 2 p i I c20 5C t o o c t 2 9 f T l o o n l fo L E F T 9 B A S S I R6 2__ c85p Rt4 o o...

Page 46: ...4558 2 I C l LF353 3 9V 3 T l l o o n I lc48 r Il rt EI f o a c51 tF 2 n 2 t 2 I C 3 4558 5 r O o n fr c 3 t 4 2 n 2 o E 3A z c 8 c59 2n2 6 A oot T R 5 ca4 78 3 I 0 I C 37pl 4 8 22o L 9V JA TR58 339 4...

Page 47: ...E TR2 BC8 7 40 7 t I t 3B 30v c28l tI C2 7p 2 v 2 n x T R 4 BC847B u 1 I 2 I C l 6 p 2 c srK 4152 2 2 I C T p 2 c s r K 4 t 5 2 2 r R 5 l C 3 l p f t P29 F I lC36p 3 24 EPOWER suPPLY L OUT BASS OUT TR...

Page 48: ...b i I O 0 n 4 4 0 46p I O O n R 7 C43p I tz I O O n 1 6 5 F F E R 6 9 9V t 2 IC6 458 t 2 I C 5 458 c320 r I l O o n R 5 2 O C 5 4 p 5 2 t c C 2 n t 2 r c 3 4558 c 3 4 5 I t c 8 c l I o C5 I 2 n 5 t 2...

Page 49: ...r a A 3C 22 t 2 IC3 166 q c R540 R J 6 a Z v D c 2 l c22 r t 1c242 T I l O O p I 2u2 l t 3B r u L 2 p 2 a t v BC847B 30v i 3B p 2 tr l 2 I C 2 l p BDV65F 2 T c l 6 p 2 c sIK 4t52 2 D I A J q l C l 4 p...

Page 50: ...E lrfr l ta i rti f dt l ffilFllf q H E HF d HffiffFs l I dr Jt s Jt l d j Itr l lj tIIjll ffi L ffifu _ tu_f qggqlt _ i i t ry BWPflgg ffiHH Iry tttklp t HH lij fiHl iiiITT iTl RKTIVE CROSSOVER RIGHT...

Page 51: ...crI r rEr tLl Jt f t lo llBl H r n o r a ld l 917 u r l o l l m T l P6r t trA rlJ l r Y l l o L lll l t t 1 t r F s l l 6 l o l l N l l 6 l tg tEJEIBEI J fdtl r i l g Eg 9 j r ril Ft IEJEI I 1 R b tls...

Page 52: ...Pe P U J 1 r P 9 3 j i iji zr c38 22o u t t TR29 BC8478 c39 l i n 5 L c24 5 O k H z COI4PONENTPLACED ON PRIN4ARY SIDE l J l U 73 N I r d t J r l P I 2 I 2 c v a z O V V D l 6 p 2C S Y S ON OFF T A P...

Page 53: ...C5 l 1 T R 2 4 p I 4VTU t L l r n l O 0 l R A R224 TU ON OFF c c c v IEle d rz I r z t t r r z t v 5vi 7 P 2 l 2 r r5vil t P 2 7 rffi L r l L 0 l o l F o l O t l c J I 9 l l l _ _ r l l o t l g s l l...

Page 54: ...l R I 1st I u u q__e I b T T B t l l t l l TIBH 1 I 1 lrp2l c I T r l I I 3 s I f I r c L l l l J crro t l l t u I i l r l l l f fr t l d q L N t f1 ra lrl h 1a lltl l3l io sll3L lll I l l l I i T a...

Page 55: ...S 2 24 PCB DRAWINGS 2 24 PCB10 MAINS i i oltl rN ryru a l 26sgi6 Ey l 1 Rl l l r __ l i l 1 1 1 t I 1 RLr r rl _lrRRro oi oJ TRftFo A I 1 l _l i II lR INS _ 1 1 q All manuals and user guides at all gu...

Page 56: ...f mod lkHz Af 75kHz o 98MHz 5105 8 0V t 20mV STEREOCROSTAL FM 9BMHzl mVrf 9 0 L 9 pilot o 98MHz check 9 low 1V 3 13 1 j R min ouI SEARCH SENSITIVITY FM 98MHz1SprV mod lkHz Lf 75kHz 1 2 98MHz 3125 j Sw...

Page 57: ...nt Azimuth Wow Torque Level CrO Fero 6k3 Hz 1o ollevel 20dB 3 150Hzr0 1o olwow 0 08 SRK CT 0 100g 333Hztlo o 250pWb t0 5 dB ABEXTCC2O3B BASF R723DG PartNo 6780036 Part No 6780037 Part No 6780046 PartN...

Page 58: ...STMODE 22 HX filter t Connectthe productto a mainsoutlet Within 30secs press 2650 Thedisplayreads 8888when the productis in test mode Press AUX REC REC 22 22 disconnection of noisereductionsystem Test...

Page 59: ...staticelectricity Thework site musttherefore be protectedagainststaticelectricity Careless treatment of the opticalpick upmay reduceitslife dramatically TheCDdrivemechanism and PCB 8 mustbe connected...

Page 60: ...s X XXVAc 2P29 3 RB right bass X XXVAc 2P28 3 LT left treble X XXVAc 2P29 1 RT right treble X XXVAc 2P28 1 Left ground 2P29 2 Rightground 2P28 214 Connect an audiooscillator to the AUX input Bass 700...

Page 61: ...oundlevel whichis done in TEST MODE13 Make a note of the valueprintedon the backof the new speakerunit and replacethe old unit with the new one Carryout the procedure described underTEST MODE13 The ra...

Page 62: ...nsport screwsA for CD Remove the CDfront frame seedismantling section6 if necessary Remove the CDcoverplateby loosening the four pins markedwith arrows Makea depthadjustment by bendingthe spring loade...

Page 63: ...Doorsensorisdisconnected Press 17 Door isclosed Remove glass door Press 16 Doorisopened Press 18 CDclamperisopened Press 19 CDclamperisclosed Bringthe productintoTEST MODE Press 05 Thedisplay showsthe...

Page 64: ...late FE81C7800 15 Doesthe focusmotor regulate FOC 8P1801 l FOC 8P1801 2 3 Radial error Doesthe RADoutput regulate RAD81C7802 15 Doesthe radialmotor regulate RAD 8P1801 4 RAD 8P1801 3 4 Turntablemotor...

Page 65: ...ohmresistor and the switchmake it possible to changethe power consumption from the lasersupply T O L O 8 P t 8 0 t 6 T 0 L M 8 P t 8 0 t 7 l t u J d P t d u t 3 GreenLED e g CQY94 part no 8330054 Remo...

Page 66: ...zende Test Cassetten Azimut Wow Torque Pegel CrO Fero 6 3kHz 1 Pegel 20d8 3150Hz 0 1 o o Wow 0 08o o SRK CT 0 1009 333Hz 1 250pWb 0 5dB ABEXTCC2O3B BASF R723DG Bestell Nr 6780036 Bestell Nr 6780037 Be...

Page 67: ...litten herausziehen Frontstoffrahmen ln den EckendesRuckwandteils 2 Schrauben entfernen Frontstoffrahmen an der unteren duBeren Ecke einwenig herausziehen und zur Seitehin verschieben Handgriff PCB 21...

Page 68: ...hraube A hinterdem Getriebekommt zum Vorschein wenn dasZahnraddesGetriebes gegenden Uhrzeigersinn gedreht wird Steckverbindung 2P30 Koordinate 1C abmontieren Ruckwandteil nachEntfernendes FuBes gerade...

Page 69: ...ung D l6sen und Getriebenachlinksverschieben CD Frontrahmenherausheben und um 90 nachlinksdrehen bis der Clamper Arm ausdem Getriebeausgerastet ist Panneau frontal d6coratif de la platine laser carte...

Page 70: ...ebes die4 Schrauben Markierung E entfernen Schlitten fiir Glastiir Schlitten der Glastur vom Getriebearm in Position Offen freiziehen Schlitten nachuntendrUcken und abnehmen Transformator Frontstoffra...

Page 71: ...Bdie Masseleitung wiedermit der Antennensteckbuchse verbunden werden PCB2 Verstdrker Amplifier PcB 22 Aktiv Filter RechtenFrontstoffrahmen entfernen Die6 Schrauben Markierung B auf PCB 2 entfernen und...

Page 72: ...fen losenund alle Steckverbindungen abmontieren PCB5 lR Empfdnger lR Receiver CD und Tape Keyboard Frontrahmen entfernen PCB 6 in Service Position herausziehen PCB7 Tape PCB12 Oszillator Service Posit...

Page 73: ...erausziehen PCB11 RE Deckelektronic Tape Keyboard Frontrahmen entfernen Die3 Schrauben die die Abdeckplattehalten entfernen und dasTape Laufwerk herausheben PCB11sitzt ganz oben auf dem Tape Laufwerk...

Page 74: ...l Bang Olufsen 6 8 DISASSEMBLY TAPEMECHANISM 4 O fc Mounting of rotation head All manuals and user guides at all guides com...

Page 75: ...3n Bang Olufsen 5 g DISASSEMBLY Demounting of carrier I Demounting of pinchroller 2 Demounting of CounterBearingplate All manuals and user guides at all guides com...

Page 76: ...BAIIIG OLUFSE I DK 7600 SIRUER DENMARK TELEPHOITE 97851122 CABLEADDRESSBAITIGOLUF IELEFAX97853911 3538827 07 93 All manuals and user guides at all guides com a l l g u i d e s c o m...

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