Yamaha DX7 User's Manual
Contents
1. ART Pu mm NN g pr gt 1 ATT Tilia ku kk LK KA KK A RIM dbl ST LON RU tri aon eee J JM MM le FF Fe iat K Se oe E IE FT ey S191 TT L IIH H R h R r Bee amp L E p LE l E S 001069 NYAUT d0 6685H Y B BO ss eS T 8 68888 eS 3 ri ve program one new EPROM 27C512 wit rsonal d m ve remove the soldered ROM in my Yamaha DX7 II D and remove solder in holes for ICS IC6 IC22 IC24 and CN1 we can also see a soldered Battery F ian gSegmjgmm TTT TE rN x a IJ im a LT na na a GR a i TE i TTT W ri 1 EY ou se Ue a ge pl ll wawawa E orzax VI aa I ve remove the Battery socket and the plastic only the plastic from the FDD Controller on an old PC Mother Board I ve remove the Western Digital FDD Controller from one old ATARI 520STFM s ees TUTTE ery a a UR R rrna ld g se got Ew F a il U c We must take care to not destruct IC and the Atari Mother Board Ilds B p up Fi eed 4 UL ick d Nx 5 IRL ET TETE F After soldering the dual in line FDD connector I ve insert the plastic for the FDD Connector tea m 8 ss me wd E x LE BJ EIN P ETTET m T m aT TT EPL GRB 1 ee sm y lime 1 AE ee R V AP SP S kka Li 9 9 TRR RRR RR R RR vii L aaa enn 61 Toe ee m E te RUAL BHD I ve insert a2. EL BAL IPO Ta ee ku LEFT cunve ROHT CUVE 1 rss Kft OH
3. Upgrade your Yamaha DX7 II D to Yamaha DX7 II FD February 2009 By CloudsWalker www cloudswalker com Missing Parts on the Yamaha DX7 II D IC5 Integrated Circuit 16 pin DIL TC40H174P 6 x D Flip flop can be replaced by 74HC174 IC6 Integrated Circuit 14 pin DIL 7405 TTL IC22 Integrated Circuit 28 Pin DIL HM65256BLP12 SRAM can be replaced by HM62256LP12 or equivalent IC23 EPROM 27512 or 27C512 for the new Operating System IC24 Integrated Circuit 28 Pin DIL WD1772 PH 1986 Western Digital Floppy Disk Controller 1 3 5 inch Floppy Disk with Drive Select 0 CN1 34 pin Floppy Disk Male Connector 34 pin flat cable between Main Board and Floppy Disk Power cable between Power Supply Board and Floppy Disk Parts collecting 74HC174 is easy to found and found also one IC socket 16 pin DIL 7405 is easy to found and found also one IC socket 14 pin DIL HM62256LP12 or equivalent is relatively easy to found and found also one IC socket 28 pin EPROM 27C512 is relatively easy to found and found also one IC socket 28 pin DIL WD1772 can by found on the Web or removed from one Atari ST IC socket 28 pin The floppy Disk can be 1 44Mb 720kb new BUT with Drive Select 0 Battery replacement It will be judicious at this Time to change your Backup Battery 3V CR2032 It s better to solder a socket This socket can be removed from an old PC Mother Board Procedure I ve remove the EPROM with Operating System DNJ lt L
4. nd solder 5 IC sockets remove the Battery and insert the Battery socket removed from the PC Main Board Then I ve insert the 4 IC and the RIO with the new Secs System Tre k m ce es QALAN Fa Fa F TE setea AN N a ee i K 4 PP 17 ee ee C LI i 879494899 P CR RT i anns eee eee ee ee 4 a a LEETE E nee R s ss nasnasass L rae R CE1 6 56699 X T ve solder a Power cable for make the first tests VAN V dalil AAP LTE I ve connect the Floppy Disk to the Main Board of m Yamaha DX7 II D 5 cket an I ve insert the removed EPROM in my Yamaha DX7 II FD and my Battery is into a so i wi i MT 8 a ee E arest H v a ape Thi koris id EEF l i L TP eS MEL LJ 0 RX a 5 dns VN T e N s ppi DI K gt E Ej 4 i TTT LE z ga fru g ms gi di d d oS J ab Ses T u ee CETS 5 m TET rt le m m S mu gg t m ma m Du a as oe Ree a L C MA H piers ua ot C LT ji bE Spa a sr ch aa x aa are eS g FF foes p CET a ower Cable for FDD I must make a hole for the Floppy and a little mechanic and a good P New Floppy Disk mounts I must still make a short flat cable and a good FDD Power Cable FD Label TAEST Ai E CARTRIDGE e F F VOICE MODE SELECT E EG COPY PLA k DISK Label lt F POWER O OPP BPPT HETBOARD LEV
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