Bang & Olufsen Type 2651 Service Manual Download Page 41 | Manualshive

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Summary of Contents for Type 2651

Page 1: ...rt Bang Olufsen BeoSound Century Typ 2651 2652 2654 265 l SERVICE MANUAL CircuitDescription 3540178Danish 3540179English 3540180German 3540181Fi nch ...

Page 2: ...9 5 17 5 29 5 18 5 30 5 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 fabric t r 6 l Handle PCB 21Activeantenna 5 1 Rearpanel 6 2 CDfront frame PCB 20Doorsensor 5 3 Tape Keyboard frontframe 5 4 Gearbox PCB 9 Gearsensor 54 Sf idingbracket for glass doo...

Page 3: ...t diagr J page 2 20 Output 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 diagr M page 2 23 6 rRReceiver T rr1 l 7 rapedieital rr 7 tapeanalos 7 Reset converter T r I f Seenfrom the front r I ...

Page 4: ...e 2 17 1oMains i 1tl ii 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 Crossover network left diagr J page 2 20 22 Crossover network right diagr K page 2 21 1 1 7 8 Z ...

Page 5: ...alimpedance 75O Sensitivity 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 Channel separation 33dB lkHz lmagerejection 75 dB lFrejection 80dB AM section AM range LW 150 279kHzGB MW 5 22 161 0 kHzGB MW s20 tttOiiz USA CAN Antenna Loop18 1prH Sensitivity 4m...

Page 6: ...oy iHarOpermalloy 0 1 5 D t N 2o o 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 a nd8 cm 3 Bitstream 20 20 000kHz 0 5dB 2 dB 94 dBA weighted O 025o o at 0 dB 1kHz Pint l t C Pin2 Signal ground Pin3 AF in left 0 25 2V RM547kO Pin4 N C Pin5 AF in right O 25 2V RMS47...

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 ...

Page 8: ...1 3 WIRING OFTRANSFORMER 1 3 ffim ffiil ffiil ffiX reil J l 1 I I Type 2552 GB 24OV PCB10 Mains ...

Page 9: ...1 4 1 4 WIRING OFTRANSFORMER Type2553 cDN USA120V PCB10 Mains ffiil ffiil _ I g 3 l QvnrNS ...

Page 10: ...iflNe 2sec EE E EE E E1 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 changedisplay indication display tracktime Change display indication display remaining time Randomplaystatus display indication is blinking Randomplayon off display indicationrotates ...

Page 11: ...uctionisoff Select anothersource Recording pausemode display blinksalternately Auto reversestatus Auto reverseonlofl display indication blinks when auto reverseisoff Startrecordingtrack4 ex on CD onlyif CDisselected assource Stoprecordingpausemode Startrecording Pause the recording Stoprecordingcompletely Returnto approx recor ding start Resume recordingafter pause Select anothersource Switchto st...

Page 12: ...2 2 WIRING DIAGRAM 2 2 WIRIN 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 ...

Page 13: ...GRAM 2 2 WIRING DIAGRAM 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 ...

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 ...

Page 15: ...P 2 0 P t 6 6 A 0 P2 l P 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 i p 3 2 r l T f l r c 7882 88 r frF lJi 1 r u t ffi ov i l L i l o 0 T 4 DISPLAY XEYBOARD a T ool B r P b r b 1 B C P 5 3 6 5V 4Vru l l 4 v V 9 9 tr orrcneu x ...

Page 16: ...u lZOf r tr DIACRAI l OPTO RESET S D 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 c I l u o l o U i 6 u u u P S n n U I I K 5 T R 2I 8 S H F T R E GI ST E R 2 r c 8 DISPLAY KEYBOARD 2 6 x f 4 x B FM AM DETECTOR DECODER I C 7 0 5 3 I C 3 6 I R REC...

Page 17: ...f f nf O 2ND 3 1 2 5 SEARCH 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 a x p 4 x I F RONI FND 0_3 M AV DL I LL IOP 6 A D 5 I R L o D L C O D E R 5 2 I AM TUNER 5 0 7 0 I 4 7 l 5 _ l j l 7 0 5 L C 1 2 8 TUN NGCONTROL P L L L O O P F I L T E R orac...

Page 18: ...RTAPEANALOG R t c MUTE t 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 P B A P l l A l B orncnnv x 1 l a 6 ...

Page 19: ...2 5 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 ...

Page 20: ... 4 3 6 4 5 CUE R E C M U 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 L I Z A T I O N MUT E l e 0 o L I l 5 o r O t D i C PORI G o d 6 f d O t N T F R t 0 P0Rt t ...

Page 21: ...uE 1 1 2 f 2 I H R E M U T E l rrtn 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 spr I D I oLA_t A o M U T E f L O U O D ...

Page 22: ...IAGRAM FORCD I r c7800 P 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 O T O R A M P ...

Page 23: ... 9 2 l2 f 38 8 r c 7 8 4 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 D E S I G N A L PRCCESSOR 6 2 2 2 5 2 2 A 5 R S 2 3 2 B U S ...

Page 24: ...DIAGRAM 2 BL BLOCK DIAGRAM 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 R ...

Page 25: ... 2 2v JAPAN lSllkHz 8 5Y 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 tfl lfl lfl _ _ 9_F10LEr9 ll 0 1 93 ES 3l0 l 217 03140 SERV ES tt T Wffiffifu AM OSCILLATOR t 3151 Horronus r 9 1 0 7U3 ...

Page 26: ...GRAM A 2 1 0 r 9 3 r1 3 3r 1 FM DETECTOR 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 ...

Page 27: ...5u1 16 5 28Bl0 5129Jt0 5l0l 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 n 3lol c3 r 3105E2 MU L i gtoo os 310 01 srEREo t 3108Es 3109c1 E 3ll0 0 3 l l l 0 5 3ll2 c5 corJt IER 3tt3 R5 3ll1 c7 D T I 3ll3 3 3u7 C ctocr 3lt8 8 3t20Rt3 l 3tzl Bil I gtz...

Page 28: ...1 2 1 1 DIAGRAM B rApE DrGrrAL 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 ...

Page 29: ...l1 2 1 1 2 1 1 DIAGRAM 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 ...

Page 30: ... 655 3529 B o t 3635 36 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 2 5 t621 7629 763I 633 5V RECNUTE N R 8 PflIJSE P80 8 PVCC 10 6V _ t s 8 l 1 v _ _ P0l N tu Jb49 _ 3 6 V v i l i l ut I b b u O J f 63 7639 641 7643 764 5 164 7 6 5 3 H lloa 0...

Page 31: ... T I l v R 3171 VR TAPE D CI TODUL 91 _ 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 r ill looN n s ovlra REC 13 8V 655 ToVnn BC848B i noJ P8 IN R R GHT PBIN 8 R OHT 1 P8 I FEC l t z o T I IF l p ...

Page 32: ...3r I uo I lu o lQl3srs l 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 ll BDECI R P 8 R 6 l s _ 4 1 3 IE 1720 ld HEFTO69UBT t cR EQUAUZATIOTI RIC AMPUIIIR LIIT NJf134 15I 70s 2103 2i09 100P 22N 3 1 5 70P SPE D EqUAUZAIIOII 3905 uu7 125 3 7705 NJM3...

Page 33: ... I 2 59 VRD 733 2l13 r ov 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_REC REC 101 PB_NUTE REC IlUII SIONRL PSTH PLRY ERC LEFT CHSNNIL SIONflL PRTH REC LEFT CHRNNET t CVOLTSOES NERSUREI IN PLRY ERCK t CVOLIAOES NEflSURTt IN REC NR FF l11 SPEED aio...

Page 34: ... I f 4 N C I 4 D l t___ _ 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 m o o c a o U n Y ta Z o cno O t n F r t a J J H z H H I _ I O an o c F T R I B C 8 47 B a sozuu l i q t f D T t s I lt J 22p C 2 C 3 r r r 1r I r v v n r p ...

Page 35: ...2 1 4 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 ...

Page 36: ...og l rsl T r 0 0 n l I l l i l I t 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 IC 2882s l 2 I oon 5 V lrnnrul f fifpl t ltul I l 1 r 1 1 3 T 2 I t t t _ _ t t t t t t I C 7 8 8 3 NlC79L05 O V t pleliil l T IC 2885 s T O o n 2 1 3 N4 4 zP 88 3 f r F r I t t I 3 r l Y tni x kP ri L tse 1 I l t r l ...

Page 37: ...7 sl C2826s T3u F 38 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 8 0 t 3 a n o l l R3835s lV5 o l A D r ml col t t a IC 78 02 38 T DA 88 097 RA D I AL S ER V O O S CI L L A T O R 6 5 0 H z 3 3 O n R 3 8 3 I s a 1 j l I l r r U i J F a R A DI A...

Page 38: ...S S O R 4 k x S R O M R 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 SLI C ER CLK DATA R J S T R V O pPROCESSOR I N T E R F A C E I C 7 8 4 s o S A A 7 3 4 I D E C O D E R F I LTER AND DAC X O X T Z T I D I G I T A L F I L I E R 4 x O V E R SAN4PL ...

Page 39: ...t40T0R Dtd Dl c 5 jfi r 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 TA L 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 rTt4 r 40T0R CONTROL D I F IB I T DAC uo lP l D grl P t 8 4 r L RI G HT lar l I B c2869 t 0 ru r r e z z v 9 l 2 8 5 5 s 4 n J ...

Page 40: ... l c s 1 o s jzo zo fro R I B C 84 78 I C I 3 l I l L a t y o L 2 R r 7 25 2 4 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 uPR0CESS0R KEYB DATA KEYB STROBE LED CLOCK LED DATA BRIGHTNESS CD N4AST CD SLA TAPE CLOCK TAPEDATA rnpE ilEEEJ x2 ieo a gso s 2 2 I Tzzoo l zoo 4 L L U r I a r E o c32 220 I t t 5 ...

Page 41: ...lPllPl z f l 5 r Fl r l s l g t l r 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 O O t 3 L a t Q _ I J 6 1 l 8 l P 2 l ii I K EYB ST R O BE H 26 ...

Page 42: ...iVM54SOPLCC 2 I D I S P 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 a 3 4 SH 8 I T I F T G I S T E R 3 4 LATCHES K L b I 5 I L K G53 RE 4 l L J R E S E TI I L p l s t _ oss t t rc cE H _ L L JN l l t 0 K i P _ 9 I K E Y B S T R R 1I col N JN X...

Page 43: ... 1 8 RAMH 2 1 8 D AGRAM 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 ...

Page 44: ...I t t F t p l l 6A I 5 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 r z t t r n z i s c H K R A I r r I r I lOOn n r c t o o f c i d rR24 B C 857B T I R i64i u 8 B I T SER PAR S H I F T REGI STER LEFT CD P2 5 t LO a Tl TO 4 L I N P 2 6 l R I N l...

Page 45: ...N I E N N A t 0 0 I I l 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 o R ii or 1P5315 lU u a 44 cr f 5 2 2 o 1 o 0 o f f f i F l l a l r v v r r t f N CI d C 8 1 p R l I C BUS DECODER INTERFACE I C I 5 8 TDA73 I 8 R I G HT BASSI c82 I i R I G H ...

Page 46: ...1 6 46 6 4 LEFT TREBLE 5 sI l t 2 rc5 4558 2 I C l LF353 3 9 V 3 T l l o o n I lc48 r Il rt EI f o a c 51 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 4B n l a oi 1 V 5 9 V 9 V DClTEI 4P I io N I O lr t2 o c C l o c320 T O o n AC STANDBY di caof Ydtsc847B e El 9v 9v onl 9v I Y Y I Y r r r o l l O O n l r c e d ...

Page 47: ...r 22p 3C t o o m lr a r E TR2 BC8 7 40 7 t I t 3B 30v c28 l 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 TREBLE I Or L tr ...

Page 48: ...59 c 3r 6 2 f A I I j lb 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 I C 5 1 664 t 2 I C 7 LF353 3 F N l t I d l L l C 4p 1 t 22v I I I I r l l O o n C22p u_s T I l O O p I 2 _ _ B C 8 4 7 8 f r l a 1 R 8 I R 8 J 2 n 2 o t ...

Page 49: ...I T D I I p l I FI l cr a A 3C 2 2 t 2 IC3 166 q c R54 0 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 BC 847 B 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 l22on I l C l 5 p 3 c fzon I939q 7 8990 l 19 o c i o r l 84 3c s 8C8578 l 2 I C l p 2 s T K 4 5 2 2 D I A J r r l r 3A 2 O n 3A 2 0 n ...

Page 50: ...TF l lilt Il ll l r ililE 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 CH8NNEL I uuuu Lb J_j 8 JruEcROssovER LEFFdHffitrlft P TJ H l s l r r t l B t l q l r r u i t ldu ffit rfi l l l B E d 3 3 E a B E b l f H i 4 1 dl h B q l i l l l l D llry l ...

Page 51: ... I fFt I F361t l R s l sr l j 93i I rcrI 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 IR5 8f1 qql llll Lll E TD sa1 Frel l r c r s 3 l P e r l 6 r rlp rEts lpllplIp r lTrl El f r A l r l Iil lBl 1 1 T E B 9L JI llll r f 1 8 o o lfi l l lil a e Il L...

Page 52: ... 3 2 n o r oa R 3 li I Pe P U J 1 r P 9 3 j i iji zr c 38 22o u t t T R 29 BC 8478 c 39 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 E O S C 8 5 8 4 1 IC 3E 4094 8 B I T SER PAR S H I F T R E G N4OTOR ON OFF DOOR CLOSE CLAMPER ON OFF opEN rclosE T A P E O N O F 47O0p l c BC847B 14 2 ll R39 iif i AB lY l i...

Page 53: ... l 5 9 co l lr J co 5 V l C5 l 1 T R 2 4 p I 4 V T U 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 m I ot r I F o r55 BC847BlX fR22p BC32 r q R 5 l l D _ l E ID 1jl J5J T tf r R25 31sf BC8a7B TR28 8C8478 zrx790 BC847B I Ac 47p T D A 1 B C 8 4 7 8 CLAI 4PER DOOR MOTOR CO...

Page 54: ... E l E B I i l E l A r n 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 t c l 3 t7 9 Td r r i l I t t T I c l c n3 I f R E l I l l I f s 0 7 I I 19 t l21 t l I l i o f ol l 1 t I R l r t t t t t l J I t 5 5 8 l1F l6 e lsl tEI E r ri r J l 9 l I E 8...

Page 55: ... 24 WINGS 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 ...

Page 56: ...ck 1 1V t 0 3V FM IF FM 98 MHz l mVrf 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 Switches just fromHighto Low A M I F MW 1494kHz Af 1OkHz low as posible l0nF ifrf Tr l 50E c 1 1494kHz 5104 symmetrical and max height A M R F MW mod l kHz 30 AM 558k...

Page 57: ...esttapesusedfor adjustment 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 PartNo 6780035 PartNo 6780135 Part No 6780067 ir LoadAzimuthtape part No 6780036 connectthe two inputsof an oscilloscope to 2p21 5 Lour and 2p21 6 R OUT respectively from TapepCB7 P...

Page 58: ...torque Playback level TESTMODE 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 Testmodeisabandoned by pressing or disconnecting the mainsvoltage Place PCB2 in service position seedismantling section6 Short circuit capacitor2657on PCBT AutomaticLevelControloff...

Page 59: ...pisextremelysensitive to staticelectricity Thework site musttherefore be protectedagainststaticelectricity Careless treatment of the opticalpick upmay reduceitslife dramatically TheCDdrivemechanism and PCB 8 mustbe connectedwhen the productis connected to a mainsoutlet lmportant Preset the lasercurrentpotentiometer 8R3813 when replacingthe CDdrive mechanism and checkthe connection to the monitordi...

Page 60: ...to the label LB left bass 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 HzJl mY Treble 7200 HzJl mV Carryout the procedurementionedunderTEST MODE13above Adjustto maximumoutput Display 9999 lf necessary selectspeakerby meansof STEb the activespeaker...

Page 61: ... This valueisusedfor adjusting the soundlevel 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 ratedvalueprintedon the backof the speakerunit may be either positiveor negative Pos lf the ratedvalueprintedon the backof the speakerunit is positive dampenthe unit ...

Page 62: ...outlet Loosenthe two transport 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 loaded fitting Makethe lateralcentringby adjustingthe two springslaterallyon the spring loaded f itting WOW FREQUENCIES Frequency Foultsource Pos no 1 7H z 1 7H z 4 1Hz 6 0Hz 7 6Hz ...

Page 63: ...tintoTEST MODE Press 09 Doorsensorisdisconnected Press 17 Door isclosed Remove glass door Press 16 Doorisopened Press 18 CDclamperisopened Press 19 CDclamperisclosed Bringthe productintoTEST MODE Press 05 Thedisplay showsthe row andcolumnnumberof the key r1cl MODE r1c2 REC r1c3 STORE r1c4 SOUND r1c5 n r1c6 LOAD r2c4 RADIO r2c5 CD r2c6 TAPE r3cl AUX r3c2 STEP r3c3 STOP r3c4 STEP r3c5 TUNE r3c6 v r3...

Page 64: ...17 Doesthe FEoutput regulate 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 error Doesthe PWMAoutput regulate PWMA 81C7841 28 Doesthe turntablemotor receive DCvoltage TTM 8P1842 1lTTM 8P1842 2 5 TL islow for morethan 50 msec Check TL81C7800 11 6 Jump S...

Page 65: ...agefor the monitor The33ohmresistor 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 Remove the flex PCB from Pl801on the pCB8 Connectthe above mentioned circuitto pl801 on the pCBg ConnectSl pin 6 of 81C7800 to ground when st stan Initialization low the lasersuppl...

Page 66: ...meiden Furdie Einstellungen zu benutzende 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 Bestell Nr 6780046 Bestell Nr 6780035 Bestell Nr 6780135 Bestell Nr 6780067 Azimut Cassette einlegen Bestell Nr 6780036 DiebeidenEingdnge einesOszilloskops an 2P21 5 ...

Page 67: ...stiir Glastur ausdem Schlitten herausziehen Frontstoffrahmen ln den EckendesRuckwandteils 2 Schrauben entfernen Frontstoffrahmen an der unteren duBeren Ecke einwenig herausziehen und zur Seitehin verschieben Handgriff PCB 21 Aktivantenne 2 Schrauben entfernen Handgriffgeradenachhinten ziehen wegenSteckverbindung DESASSEMBLAGE BS2OOO Aprdsavoird6pos6la facearridre il estpossible d acc6der auxcartes...

Page 68: ...ierung A entfernen DieSchraube A hinterdem Getriebekommt zum Vorschein wenn dasZahnraddesGetriebes gegenden Uhrzeigersinn gedreht wird Steckverbindung 2P30 Koordinate 1C abmontieren Ruckwandteil nachEntfernendes FuBes geradenachhintenziehen Chassis wiederauf FuB montieren Face arriire Enleverlesdeuxcouvercles ou la poignee de lafacearridre 2vis Enlever 16visreper6es par un A sur la facearrieredesp...

Page 69: ...ben desGetriebes Markierung 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 PCB 2ODoor sensor 6metteur r6cepteur de la porte Enlever lespanneaux frontaux d6coratifs en tissu Enlever les4 vismaintenantle panneaufrontal d6coratifde la platinelaser Desser...

Page 70: ...ren ZumZerlegen desGetriebes die4 Schrauben Markierung E entfernen Schlitten fiir Glastiir Schlitten der Glastur vom Getriebearm in Position Offen freiziehen Schlitten nachuntendrUcken und abnehmen Transformator Frontstoffrahmen entfernen Tape Keyboard Frontrahmen entfernen Steckverbindung 1OP12 abmontieren 5 Schrauben entfernen Transformator herausziehen und 5P13und 5P18abmontieren die beidenLeit...

Page 71: ...osition verdrehen BeimZusammenbau muBdie Masseleitung wiedermit der Antennensteckbuchse verbunden werden PCB2 Verstdrker Amplifier PcB 22 Aktiv Filter RechtenFrontstoffrahmen entfernen Die6 Schrauben Markierung B auf PCB 2 entfernen und PCB 2 in Service Position bringen Cartes PCB 1 Tuner s6lecteur de canaux PCB 17 Front end ll estpossible d amenerle cot6 primaireen positionde maintenance en pivot...

Page 72: ...Hilfeder beiden Federzapfen 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 Position fur die Primiirseite kanndadurcherzieltwerden daB PCB 2 in Service Position gedreht wird Ruckwandteilentfernen PCB7 mit HilfedesFederzapfens losen Carte PCB 3 Microprocesso...

Page 73: ...nachhinten ausdem Gerdtherausziehen PCB11 RE Deckelektronic Tape Keyboard Frontrahmen entfernen Die3 Schrauben die die Abdeckplattehalten entfernen und dasTape Laufwerk herausheben PCB11sitzt ganz oben auf dem Tape Laufwerk PCB12 Oszillator SiehehierzuPCB 7 Tape PCB17 Front End SiehehierzuPCB1Tuner PCB20 Tiirfiihler Door Sensor SiehehierzuCD Frontrahmen PCB21 Aktivantenne Active Antenna Siehehierz...

Page 74: ...l Bang Olufsen 6 8 DISASSEMBLY TAPEMECHANISM 4 O fc Mounting of rotation head ...

Page 75: ...3n Bang Olufsen 5 g DISASSEMBLY Demounting of carrier I Demounting of pinchroller 2 Demounting of CounterBearingplate ...

Page 76: ...BAIIIG OLUFSE I DK 7600 SIRUER DENMARK TELEPHOITE 97851122 CABLEADDRESSBAITIGOLUF IELEFAX97853911 3538827 07 93 ...

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