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Summary of Contents for BX-100

Page 1: ...Nakamichi Service Manual Nakamichi BX 100 BX 100E 2 Head Cassette Deck...

Page 2: ...eae a cele ens Os fe eh 0g os eae ete wee ecehelse 6 4 Timer Switch P C B Assty ciess0c 6S Seayaheng oeaiS04 Soll aod ese SE ey towe giial MER en Slnalwa SO BS OF 6 5 Volume P C B Ass yi 2 5 38 6 Bee...

Page 3: ...ck Head sur face and the Erase Head surface and check whether the end of the small block is located within the specified tolerance as shown in the figure 2 3 Record Playback Azimuth Alignment and Heig...

Page 4: ...2 9 Lubrication The tape transport is of a lubrication free type mechanism When the following parts are replaced apply the specified lubricant 1 Molykote R Grease X5 6020 Cam Motor Pulley Thrust porti...

Page 5: ...04 TP101 Playbock Level VREOI Reel Motor Speed Play vR108 GL VRIO1 vR201 ia Level vR208 t Bios Trap 1P102 Rec Cal Record al 1P202 Bit a om rrmro orezo3 Peaking 1304 Bios Osc Frequency Bias Cut VRIOS V...

Page 6: ...uminat ing Adjust the Input Level control to obtain 90 mV on the VTVM then decrease the generator output level by 20 dB Check to insure that the segment for 20 dB illuminates Feed in 400 Hz and adjust...

Page 7: ...record rewind and play them back Check to insure that the playback levels are within 2 dB against the levels in Dolby NR OFF Check to insure whether the total harmonic distortion is less than 1 0 for...

Page 8: ...be used in the measurements Adjust the Input Level control to obtain 0 dB on the VTVM 2 Record rewind and play it back 3 Read the distortion meter and check to Record and Playback Tape SW ZX SX EX Eq...

Page 9: ...t a VTVM to TP101 TP201 on the Main P C B Ass y Feed in 1 4 kHz and adjust the Input level control so that the VTVM may read 90 mV 0 GB at each test point Level meter will indicate 0 dB Remove the VTV...

Page 10: ...MECHANISM ASS Y AND PARTS LIST 5 5 1 Synthesis Fig 5 1...

Page 11: ...3x8 Countersunk BT 4x8 Pan Washer Faced BT 3x8 Binding BT 3x10 Binding Ce Se See oe oes 10 Schematic Ref No Part No HA04495A 0H04264A 0H04359A 0J04628A 0H04306A 0H04240A 0HO4156B OM04377A 0J04630A 0J...

Page 12: ...5 2 Syntheds Mechanism Ass y A01 11...

Page 13: ...ek a beak ed Beh ba Be ett Ba fed Bed Ba bet td fa Dad ad eed O00 De et ND Pd Det pe Ped ry MEH ONE ROR OME HH NMR ENON Be 12 rritrdtra rig OHO4269A 0J04766A OJ04765A OHO4277A OH04271A OH04275A HA0452...

Page 14: ...5 3 Mechanism Ass y B01 38 50 oA Fig 5 3 5 4 Rear Panel Ass y B02...

Page 15: ...2 4mm E Ring 3mm FT M2 6x6 Pan M2x4 Pan 2A FT M2 5x20 Pan M2x3 Pan M2 6x3 Binding Capstan Washer M2x5 Pan 2A M2 6x9 Pan FT M2 5x4 Pan FT M2 5x3 5 Pan M2x3 2 Truss HED Bek bed ad bk LCA CD Pt Ba ed Ba...

Page 16: ...eex 100 Caiseeailn Others BX 100E OE00752A Eyelet 2x3 2 OB08359A Spark Killer Cover BX 100 Australia ney res put BX 100E i Eppa 0J04763A Power Switch S o sno Holder 1 OE00612A M3x6 Pan ys ye ae BCL 1...

Page 17: ...Dip Mate 2P R311 0B01857A 1 4w J J 0B81011A Dip Mate 4P R312 0B01888A 1 4w J 0B81012A Dip Mate 5P R313 OBO09797A 1 4wJ R314 0B01887A 1 4wW J 6 6 Dolby NR P C B Ass y 6 7 Tape Switch P C B Ass y BA050...

Page 18: ...V LN 0 0334 100V G 22u 16V 4 7 16V 0 0334 50V J 0 1 50V J 0 3 50V LN 10u 16V 100n 16V 470u 10V 2700P 50V J 1200P 50V J 4700P 50V J 22P 50V K Headphone Line Amp 0B06370A 0B06299A 0B09725A OB09697A OBO0...

Page 19: ...6 9 Main P C B Ass y 2scz 31 BECOs S Liaz 0 5m Ss 18 Fig 6 9 1 2nd Version...

Page 20: ...i a 1 i H i i a i i 1 i i f i i 1 Au Ic 30 TC9I45P _ty SOVILNIa Fig 6 9 2 1st Version 19 2a 250V Faor 280945...

Page 21: ...Fig 7 2 1 Dolby NR IC A7300PC vee Ac 04 Ys ty ay OD Ay ov ve Aa Oe oxo TOP views Fig 7 2 2 OR Gate C MOS IC uPD4071BC Voo As Ba Ya Ys AaB at By Y Ye Az 82 GNO TOP VIEW Fig 7 2 3 NAND Gate C MOS IC nPD...

Page 22: ...INO INT O 3 Input Port INT IN2 0 3 tnpur Port INZ OTO 0 3 Output Port OTO OT1 0 3 Output Port OT1 OT2 0 3 Output Port OT2 O73 0 2 Output Poet OT3 1000 3 Bidirectiona Port 100 1010 3 Bidirectronsi Por...

Page 23: ...303 rm 29733 ans 1st au cus YS roriner setter Ve tadeeror RE 8 se meimrce BC 8 27K wSOviBR 9 47 50V 10p tev mies e aK nies a7oK O 012y cH0 J el eee I kb cizz ez0e 22m R29 8 2K e104 2sczeve N30 vRiOz 6...

Page 24: ...istics fie OF a Use ONLY replacement parts recommended by the Loos manufacturer It is recommended that the unit be operated from a suitable DC supply or batteries during initial check out procedures K...

Page 25: ...nent side view of the P C B is illustrated unless otherwise specified I I I I I I I I I I I i I I I I I I oT six reoy 1 aa 3 Ba I 7U S A CANADA 120V Mv 25 teo2 Ya ee ee me ee re me es ee ee eee ee ee...

Page 26: ...2 18 WHT Mv 25 992 h MV 26 oe 7 7 cD WHT fe 8 O O O REO eee baal Q REO _ g 000000000 Fc 13J CN 3 5 BLK 6 YEL YEL ORN reo Cex ACwHr ern vet Csry 1 FC t2 oa PC B Assy an aq a 1S a s 3 Ss oO 6 000 4 it...

Page 27: ...D WHIUOIDEW 000 Woy apo Mw2 4 s y20Pr suoydpDaH KC apo Awoos aes Oy Te aunm 2ey kad 4 e1hH 180 Gd Cy 3010 1825 p a a 334 2 2HOOv APO AWOE tO d1 bObdL posn d u j b y 20201 20bd2 ado dwy D3 3ay 109 308...

Page 28: ...eel Motor ae ne a ge Tape Output GAIN dB i SS a ee E IL FREQUENCY Hz Fig 10 2 1 Head Relay 2 Record Current Frequency Response Fig 10 1 1 2 Mechanism Control Timing Chart Control Button Play Pause Rec...

Page 29: ...an 1 0 400 Hz 0 dB ZX EXII tape Less than 1 2 400 Hz 0 dB SX tape Erasure eee eee ee eee Better than 60 dB 100 Hz 0 dB Separation 60 Better than 36 dB 1 kHz 0 dB Crosstalk 1 ee ee ee ee Better than 60...

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