Bang & Olufsen Beovision MX1500, Service Manual

Page 1: ...Bang Olufsen Beovision MX1500 Type 7800 7801 7802 7803 7804 7805 Beolink 1000 Type 3013 3014 3015 SERVICEANVISNING SERVICE MANUAL...

Page 2: ...eeeeeeeees 4 Mechanical parts list seeseeeseen e ees 4 Justering ccccee seeseeee nents teenenaeeeeeres 5 Adjustment 6065 divialatnsta dagGeant 5 Adskillelse ccccceeee ceeeeeeneee eeeeeeeees 6 Dismantl...

Page 3: ...andre halvle dere er felsomme overfor elektrostatiske udlad ninger Uforsigtig behandling under reparation medferer en drastisk forkortelse af levetiden Nar man udforer reparationer skal man sorge for...

Page 4: ...tegnelsen pa det diagram forbindelsen gar til fig 2 Stedsymboler Der anvendes to forskellige stelsymboleridiagram merne som vist Stel der ikke er galvanisk adskilt fra 4 lysnettet Stel Signalveje og m...

Page 5: ...Bang Olufsen 21 2 1 2 1 Plug Survey PCB 03 VIDEO OUTPUT PCB 04 BASIC BOARD F 163 F PCB 0 PCB 11 TXT OECODER SECAM PAL 5990 DEFLECTION...

Page 6: ...ISTEMA VST2 i i 2 2 4 3 3 3 3 3 3 Hy 3 a 12 H 7 iH co a 4 4 eS Mes Hy ae ee a fr ae Dab ORS Ban soeseunee i TENDON TOT MOSH OP ZEORO MMOOD Coss Ph 7 aaa i ee a a Els z 1 NOT PRESENT FOR Unk ONLY SEIS...

Page 7: ...ZIONE 205 3005 20563056 54 3055 o 2h H410 22 473067 2064 4 oda 304 4 HC 1 00m 2n7 7938 TOA2S79 BASIC BOAR PCB1 piastRA BA 10 65 852 853 F sii DEGAUSSING SUPPLY SPEISUNG SMAGNETTIZZAZIONE ALIMENTAZIONE...

Page 8: ...556 3 3729 4709 85v OH Sav wv see 3726 6727 7 11 V v Z a5v 6 i 8 ov 6 ee I wat ut SF 2041 410 10 ASV MSV 6733 8S 2703 BAVIo Tae seh 697 oy a 6896 14V Br5 300K av 700 Bzx79 BZx 2 AZX79 fiz 36 00 F3 33...

Page 9: ...rIgeTsCcac FODMMVOEWVEANWVY NNUNDMON BROWN B H HR ARNE ERO ADYBUNNGBOOORDO SWORE AMANUWN DOBDBO SS HDMOOY HE MOMOOMOFL IE IA STOW SORE KKH HK EMeEARATAIAIAOIO o a Kid TeITIBTOOOOIOL RYNOSAUS BONN 3 a...

Page 10: ...O09 2290 15 2502 K 5 2523 KIS 3104 443 3122 KIT 3270 ANZ 3284 FI3 3461 1 3420 1 2 3 4 5 6 7 8 9 10 PCB1 BASIC BOARD CHROMINANCE CHANNEL SELECTOR IF AMPL DET AGC AFC PIASTRA BASE FARBART LE KANALWAEHL...

Page 11: ...6 ig he BASIC BOARD CHROMINANCE LUMINANCE _ DET AGC AFC PCB1 piastRA BASE FARBART LEUCHTDICHTE ST DEM AVR AFA CROMINANZA LUMINANZA 3 SRIVEL CAG CAF Q 22 aa 3 pee 32723273 C13 fa 2 49 4 2 300 2274 7 S2...

Page 12: ...86 oo E17 3412 GI9 3432 E19 3452 CI9 3set 5 3510 Let 3518 8 270 Bt3 6106 KIi3 7070 B66 7508 L19 9260 87 G1 O17 3428 O17 3440 CIT 3470 FI 3502 K 5 3511 J 6 3520 116 S27 BI4 6410 FID 7101 114 7510 Lat B...

Page 13: ...y i Sct oe 4 1 i 1 1 1 2772 3772 560p a 46 vcs 7785 Osv SAAS231 V3_ 25 gta cves a i en ee TE XXONLY IN SCAN VERSION ee ee ee 800mv 6 9MH cock a A ioe 480mV 13 87SMHZ CLOCK an 6v 2 3V 6 OMHZ Fe lam Ke...

Page 14: ...TROL 37G3 a MANDO 100 6 ce 180 ae osv vcs TING CHAIN CHAR av asv SAND ie GENES G CATENA DE TEMP GENER CARA CLOCK 2772 are FILTER S60p le Laie pe Y 120 Oo ACQUISITION a 2793 HOK ACQUISIZIONE DATA 2 ves...

Page 15: ...1796 A 100p 13 875 i 1c LM 4 av 1s 277 nar TTO av 100 THE OC VOLTAGES ARE MEASURED WITH THE Tv SET IN TELETEXT MODE ra 113 6r13 8 ms 7 atc a aaa ama 2784 Bear3 1 R GV AUTO Q 1796 1802 2762 2763 2766...

Page 16: ...9 5 2 5 Teletext PCB 19 Komponentside 39 937 B12 1750 TXT DECODER Solderside a Ase 39938 Bi2...

Page 17: ...2 6 2 6 Video output PCB3 1982 PICTURE TUBE PANEL Komponentside SRE A 39 895 B12 Solderside 39 896 B12...

Page 18: ...3862 2 BR reo2 7 O8 26032004 a 1040 IF SYNC 234 6 7 8 9 10 11 12 131 15 16 17 18 19 20 20265 Hoa ies pe ei 9003 oy ik2668 7730 7 a cy GK ei ee ren bare 70 i 1690 sao Flex 9636 96333611 Up to0mA 6650...

Page 19: ...eS Fe 79903 Ww tycoue toy r Ts ee 535 E OF V1 olte B SK20 9904 cs ov 2 ae Ler hal oeren ie it oe es Os ier 1h Rosenct Si osat Io see n ay By 3 it ein 29905 _ T 23 OM SB W Soi o aes e Bey ye easy SBSH...

Page 20: ...Ree et ee A peti 5 RS rr lpyer PP Te pate Bog SN eS cee rra0fel27 gy 1 85 ee Eo opto 3 3 2694 Be pe epee 1 840 MS ar 26383 9636 f g Bw 35689 tt 555p4 ahaa 1 19652738 og q s4 1 aanace 2 Be eae 35 1 sr...

Page 21: ...ne 2678 5 By 1g fr 1D Nual v a at ee Vole db 2 F673 wy ye ea ay ata et 1 6 ole xt eee RB raed n Ton Ky Sain 5 rast B1FB 07826 2556 ba es ot ey wa ibe 1652 72901 See eeHt wth 8013 L ae py Beas ah Sear...

Page 22: ...m CONTROL SYSTEM or SCART STATUS 1320 AS 2917 C2 2325 AG 2331 BS 2338 9 2344 F 3311 F 6 3316 B2 3336 DIO 3345 D2 337 E10 6313 F 2 1332 B87 2318 C2 2326 D3 2332 AB 2341 85 2345 E 2 3312 F 3 3320 A5 333...

Page 23: ...ee 4 PolyESTERFLATFOIL SEE NOTE ais e It Bea aby HEUTE SRS sleet os eo SS ae alii ELCO SINGLE ENDED NOTE f 25V q 200V x 1000V E 20V g 40V r 250V z 1600V F 35V a 25V h 63Y s 300V A 16V G 50V b 4V j 100...

Page 24: ...AM PAL 7 10 Aas a a TRANSCODER pus Chien een aty 102 i to 1 4 a9 t H f AMPLIFIER a CHROMHANCE TEN Oo TUNER T R G 3 AMPLIFIER 1980 e INANCI DETECTION Lue 7 i H he esieahde des 1 t Sad OO few io i SYNCH...

Page 25: ...Bang Olufsen 29 29 Beolink 1000 diagram F 50 GB 89 30130 1893618 ize 1000 terminal Key out MC 68HCOL PS BO 5340776 Transmit 1 cr SON O3 Hq jen Dite a0 C6...

Page 26: ...0350 209 36V 2 0 4W D6572 8300409 214 BAV 20 D6698 8300321 209 33V 5 0 4W 6574 6699 D6609 8300507 221 BYV 27 156 D6700 8300053 209 15V 5 0 4W 6610 D6701 8300058 209 1N 4148 D6623 8300507 221 BYV 27 15...

Page 27: ...3V C2115 4130215 220nF 20 63V C2638 4200395 470uF 10 50 16V C2118 4200308 1pF 10 100 63V C2652 4130127 470nF 10 630V C2124 4130220 10nF 5 63V C2655 4000025 15pF 5 63V C2259 4000069 100pF 5 63V C2656 4...

Page 28: ...03 8030033 6 0 MHz only GB BP1103 8030045 5 5 MHz DL1270 6240020 Delay Line DL1262 6240027 Delay Line DP7880 8330225 LN 524RAP PH display X1934 8090003 Crystal 4 MHz X1267 8090005 Crystal 8 86 MHz F15...

Page 29: ...kQ 20 0 1W C2410 4010081 270pF 10 63V C2430 4010081 270pF 10 63V 15473 8020673 Coil 15uH TR7508 8320108 20 BC 548B D6508 8300058 209 1N 4148 6510 C2506 4130193 22nF 20 63V C2508 4010027 InF 10 63V TR...

Page 30: ...1 4010081 270pF 10 63V S GB D character C2792 4003128 100pF 5 63V C2824 4200487 10pF 20 50V C2793 4010021 220pF 10 63V S GB D character C2794 4130225 150nF 10 63V C2825 4130261 100nF 5 63V C2795 41303...

Page 31: ...1 BC 858B TR4 8320616 51 BC 858B TR7 8320684 52 BC 869 TRS 8320684 52 BC 869 ICi A 8340776 144 68 HC04 P3 IC2A 8340830 145 74 HC 393 D1 6 8300482 217 LL4148 BAS32 D7 8 8330140 203 TSHA 5502 R13 501128...

Page 32: ...5010063 5010093 18 5010822 5010362 5010066 5010135 5010072 5010791 2 2 5010682 5010448 5010092 5010064 5010079 5010120 5010245 2 7 5010925 5010403 5010000 5010298 5010141 5010083 5010431 3 3 5010253...

Page 33: ...8 Damping block 2776120 Button 2819240 Spring 3164722 Cover Head Phone 3152621 Bracket 3103283 Foot 3470225 Side plate right 9012 9013 9014 9015 9016 9017 2530533 Top bracket 8022283 Degaussing Coil 8...

Page 34: ...4 2 4 2 Bang Olufsen...

Page 35: ...ld box for 9027 2816236 Clips IR receiver 9028 3152629 Holder for teletext 9023 3152630 Holder 9029 3300114 Cover 01 modul8003967 Main Board 02 modul8003964 Sync IF Pal B G 04 modul8003965 Mute panel...

Page 36: ...m2 12 6275852 Cable form 14 s16 earth 6275853 Cable form s21 1 s 6275854 Cable form m6 defl 6273855 Cable form m7 defl 3397633 Top cushion 3397634 Bottom cushion 3392045 Outer carton 3503469 Owner s...

Page 37: ...t spring 4 4 9201 3164688 Battery lid 9205 9202 2776086 Set of buttons 9206 type 3013 3014 2776087 Set of buttons type 3015 9207 9203 3131300 Bottom 9208 9204 3103274 Plastic foot 3164552 Battery cove...

Page 38: ...ug 6 pol 7220749 Plug 8 pol 7220750 Plug 2 pol 7220751 Plug 5 pol _ __ 03Modul 8003969 Video output 7200084 Socket picture tube 7220745 Plug 4 pol 7220748 Plug 6 pol a re ne sy ee 10Modul 8003918 Tele...

Page 39: ...1 ELECTRICAL ADJUSTMENTS A Adjustments to the main panel fig 4 1 95 V power supply voltage Connect a voltmeter DC between pin 5 of connector M6 and ground Adjust 3700 for a voltage of 95V 2 Horizontal...

Page 40: ...rten Loosen the four screws in the rear part and remove fjerns the rear part Hojttalerpanel Loudspeaker panel 1 Hgjttalerpanelet losnes i hajre side 1 Loosen the loudspeaker panel in the right side 2...

Page 41: ...kst mode Med 2802 justeres til mest stillestaende billede Kortslutning fjernes TELETEXT DECODER B Adjustments to the CRT board I Cut off point of CRT Apply white pattern signal Connect pin 7 of IC7260...

Page 42: ...hen refitting the cable first press the clamping trykkes fast pA trafoen indtil der lyder et klik og ring in to the transformer until a click is heard derefter kan kablet skubbes pa plads after this t...

Page 43: ...RS C Sy Chassiset szttes i serviceposition ved at lesne Place the chassis in serviceposition by loosening the holderne A og trekke chassiset ud B holders A and pulling the chassis out B Ledningerne la...

Page 44: ...lobet pa TS7677 en af dioderne pa sekunder siden af trans formatoren 5655 er defekt REPAIR METHOD POWER SUPPLY Warning If during the raising of the input voltage the voltage at pin D becomes greater t...

Page 45: ...evented that the component eplaced becomes defective again arge electrolytic capacitor C2663 95 is not present and fuse 1652 is defec Possible cause TS7677 defective 95 is OV because the power supply...

Page 46: ...0 2733 G13 3657 A 4 3665 C2 3672 O04 3604 E 8 3726 6 8 3733 GI2 674 OS 6660 86 6875 E 6 6896 O09 6726 B9 7669 E10 7730 E12 2735 GI2 3659 8 3666 3 3673 0 3696 F 3727 B10 3734 Fil 697 Cr2 6664 E 2 6678...

Page 47: ...or by an open transistor part of the opto coupler If the voltage is present b Measure the voltage across C2677 If this voltage is approx 3 7 V the opto coupler circuit has been interrupted If there is...

Page 48: ...langsomt ned for speendingen igen Der ma ikke pa noget tidspunkt under testen forekomme overslag 8 1 INSULATION TEST Each set must be insulation tested after it has been dismantled The test is to be c...

Page 49: ...UIT DESCRIPTION This circuit description gives a brief technical desc ription of the latest colour TV from Bang Olufsen the MX 1500 References in the text refer to the diagrams at the front of the ser...

Page 50: ...tart conducting and the whole sequence will start from the beginning The pulse width modulator receives 3 signals a Voltage from winding 1 2 8 9 when TS7677 is conducting b Voltage from winding 1 2 wh...

Page 51: ...rnal R G and B signals from the 21 pin A V plug can be fed to pins 13 15 and 17 Switching between internal and external R G and B signals takes place at pin 9 If the voltage here exceeds 0 7V the inte...

Page 52: ...steres med R3580 Vy VERT DEFL Dat ad tise Ei abbenetacadict bis 9 4 FRAME OUTPUT STAGE The frame output stage supplies the current for the vertical deflection coil The signal from the sync separator i...

Page 53: ...en justeres Bang Olufsen HORIZONTAL OUTPUT STAGE Fig 12 2 is a simplified diagram of the horizontal output stage In reality L is a series connection of 5611 and the horizontal deflection coil C2 is a...

Page 54: ...9 6 Bang Olufsen 3 Fig 12 2 ICt p Ve Vo vC1...

Page 55: ...af en rekke processorer i apparatet ligesom behand ling af IR signal og styring af display sker her Bang Olufsen LINE OUTPUT TRANSFORMER The line output transformer produces a number of voltages which...