 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| __ if panasonic service manual JD-700M/jd-800m series no.1 i 2120497-01971 i free datasheet http://www.0pdf.com
free datasheet http://www.0pdf.com table of contents 1. introduction .............................................................................................................. 1 . 1 2. outline ......................................................................................................................... 2 1 2.1 appearance ....................................................................................................... 2 . 1 2.2 system configuration .................................................................................. 27 2.3 speci fications .................................................................................................. 2 . 12 3. power supply ........................................................................................................... 3 . 1 3.1 JD-700M/740m power supply........................................................................... 3 1 3.2 jd-800m/840m/850m power supply............................................................... 3 . 9 4. keyboard 4.1 outline 4.2 keyboard layout 4.3 keyboard code table ................................................................................ .. 4.4 description of operation ....................................................................... .. 4.5 keyboard (sbckb asc) ................................................................................. .. 5. monitor tv ................................................................................................................ . 5.1 outline ............................................................................................................ . 5.2 monitor tv layout ........................................................................................ . 5.3 points and method of control with variable resistors ............ .. 5.4 schematic configuration .......................................................................... .. 5.5 descr iption of mon itor tv ........................................................................ . 5.6 schematics (monitor) ..................................................................................... .. 5.7 layout drawing (monitor tv circuit board) ........................................ . 5.8 parts list ......................................................................................................... .. 6. floppy disk drive .................................................................................................. .. 6.1 mini floppydiskdrive ................................................................................. . 6.2 standard floppy disk drive .................................................................... .. 7. control pcb ........................................................................................................... .. 7.1 outline .......................................................................................................... . 7.2 circuit diagram ............................................................................................ . 7.3 memory map 7.4 description of lsi operation ................................................................. .. 7.5 description of circuit operation ........................................................ .. 7.6 control pcb ..................................................................................................... . sbcv3 schematics (for ~~-?29m, 740m, 800m, 840m) ..................................... .. sbcv4 schematics (for 850m) ............................................................................ . 7.7 jd740m, jd840m/850m ddpll pcb ................. : ................................................ . 8. assembly 8.1 JD-700M/740m assembl t drawing ............................................................... .. 8.2 JD-700M/740 main parts list ....................................................................... .. 8.3 jd-800m/840m assembly drawing ............................................................ .. 8.4 jd-800m/840m main parts list .................................................................... . 8.5 jd-850m assembly drawing ...................................................................... . 8.6 jd-850m main parts list 4 1 4 1 4 1 42 46 47 5 . 1 5 1 5 1 52 53 55 59 510 5 . 11 6 . 1 6 . 1 6 . 1 7 . 1 7 . 1 7 . 1 7 . 1 72 73 7 13 7 13 7 31 750 8 . 1 82 83 8-5 87 810 8 12 9. trouble-shooting .................................................................................................. 9 1 9.1 procedures of troubleshooting ........................................................ 9 1 9.2 troubleshooting guide ............................................................................ 9 . 1 9.3 service tools 10. ic lst catalog 923 10 1 1" 12. 13. precautions on handling mos ic ....................................................................... 11 1 mosiclist ................................................................................................................... 121 reference ................................................................................................................... 121 free datasheet http://www.0pdf.com free datasheet http://www.0pdf.com 1. introduction this manual describes necessary'means and method for trouble-shooting of JD-700M/800m series. 1 - 1 free datasheet http://www.0pdf.com 2. outline 2. 1 appearance JD-700M/800m series 'consists, as shown in fig. 2 - 1 dc power supply, keyboard, monitor tv, floppy disk drive and control pcb which contains 8085a-2 microprocessor to control them. " .??.... ,.... ..... : ..... ~: .. : ..... " ....?... ~;:;.:"":;: .?. ::-: ?.. ;;.. .. :.~.-::~:.:::::-.;::;:::~:~:;.~;.; ?.. :.:.:: .... :.-:;y.::::..:...:. ~~.-' --------~~--------~ fig. 2 - 1 JD-700M/800m series external view 2 - 1 free datasheet http://www.0pdf.com nonglare monltortv floppy d'sk floppy dlsk cqntras1' vr maln power swltch fig. 2.2 jo.70om series external layout monltortv dc power suppl'( "transformer accord fig. 2.3 jo.700m series internal layout 2-2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 free datasheet http://www.0pdf.com nonglare monitor tv keyboard ac cord floppy disk contrastvr main power switch fig. 24 jd800m series external layout floppy disk fan transformer dc power supply ddpllpcb (only for jd840m) floppy iif cab le fig. 25 jd800m series internal layout 23 free datasheet http://www.0pdf.com fuse accor~ ~" .?. ".,.;.,.""~ ac line filter control pcb fig. 26 jd700m/740m/800m/840m internal layout (from bottom) 24 keyboard pcb free datasheet http://www.0pdf.com fuse floppy disk keyboard 1/0 extend nonglare monitor tv communication port connector (to jm-s70 or jk-7600) fig. 2 - 7 jo-850m internal layout 2-5 fan transformer dc power supply free datasheet http://www.0pdf.com i i ? co ...... .1 ac line fi l ter rl.----- ac cord \\: keyboard fuse connector i/o extend control pcb connector keyboard i nter face cab le fig. 2 - 8 jo-850m internal layout (f rom bottom) 2-6 free datasheet http://www.0pdf.com 2.2 system configuration 2.2.1 jo-700m system configuration +12v:-:-: 1.1a typ. monitor tv tr12dg9f refer to page 5-1 . +5v:-:-: ~ r-----~~===-1~2v=--=-==~==~~~ key board sbckbasc control pcb sbcv3 (sbcv2) refer to page 7-1. character generator *1 eprom m5l2716k2 /'~ 12v :-:-: +5v:-:-: fan k... sov tv dc power supply and trans former 9 t-- r i +12v :-:-: 0.9a typ. +5v :-:-: o.5a typ. refer to page 4-1 . floppy disk jk874 (sa400) refer to jk874 (sa400) service manual 21204970110* dc power supply ech33b01tb transformer sbct11 sbct21 refer to page 3-1. ~ acinput 120v tv 220/240vtv -<;::=------ ac/dc power --------- signal key board key top *1 ascii sbckbasc - ascii mcm66740 british sbckbasc sbcktpbri british mcm66760 french sbckbasc sbcktpfre french mcm66780 german sbckbger - german mcm66770 swedesh sbckbswe - fig. 2 - 9 block diagram JD-700M 2-7 free datasheet http://www.0pdf.com 2.2.2 jd740m system configuration +12v :-:-: 1.1 v typ. +5v :-:-: --------- r-------~=====-1~2v=.= .. ==~==~~~ control pcb sbcv3 refer to page 71. character generator *1 eprom m5l2716k102 12v:-:-: +5v:-:-: +5vdc l j +12v :-:-: o.9a typ. +5v :-:: 1.0a typ. monitor tv tr12dg9f refer to page 5-1. key board sbckbasc refer to page 4-1 . ddpll refer to page 7-50. floppy disk jk875 refer to jk875 service manual. (262d497-0157*) dc power supply and trans former dc power supply ech33b01tb transformer sbct11 sbct21 fan 80vtv refer to page 3-1. acinput . 2.2.4 jd840m system configuration +12v::-: lola type. +5v::-: ~ monitor tv tr120g9f refer to page 5-1 . r- ____ ~~==-=12=v.=--==~=~ key board sbckbasc refer to page 4-1 . control pcb sbcv3 (sbcv2) refer to page 7 ? 1. +5v::-: character gene'rator jo, ,-------, ~=========*====~v1 i ddpll refer to page 7-50. *' eprom m5l2716k 142 12v::-: +5v::-: fan sov- 1 i +24v :-:-: 0.6a typ. +5v :-:-: 0.9a typ. -12v :-:-: 0.07 a typ. 103v'\" 0.35a typ. floppy disk jk885 refer to j k885 service manual 2560497 0125* dc power supply and dc power supply ech34b01tb transformer sbct31 trans former sbct41 refer to page 3 ? 1. ~ acinput 120v'\" 220/240v'\" 2.3.2 jd800m/840m ,,) power supply power supply: frequency: power consumption: 2) processor micro processor: clock frequency: work size: no. of instructions: interruption: 3) memory dynamic ram: p-ram: static ram: 4) keyboard key codes: key modes: character unit: key kinds: interlock: repeat: 5) crt display 120v 'v 10% 220/240v'v 10% so/60hz (single phase) 1% 3 .. sa max. (i20v) i.8a max. (220v /240v) intel 808sa . 2 4mhz 8 bits 246 4 56kbytes 2kbytes (2kbytes option) 2kbytes (for indication of crt) ascii unshift, shift, control, shift control4-step shift change 8 bits numeric and alphabetic key tenkey cursor control key function key (pfi-pfi5,pel- pe6),ctrl,shiftlock, shift, rep, caps lock 2 key roll over continuous code output by rep key and other key speeds approx. looms display format: 24 lines x 80 characters (1920 characters) viewing area: 220mrn x 16smm screen type: 12 inch p .3 9 green phosphor character generation: 7 x 12 dot matrix character field: lox 14 dot matrix video control: highlight, reverse, underline, blink 6) floppy 800m 840m number of dist drives: 2 2 capacity (formatted) 800m 840m per sector: 128 bytes 256 bytes sectors per track: 26 26 tracks: 77 77 x 2 transfer rate: 250kbits/sec sookbits/sec latency( average): 83ms 83ms access time track to track: 1 oms 3ms average time: 260ms 9lms setting time: 8ros l5ms head. load time: 40ms 50ms media: saioo dysan 37402ds256 7) communications interface interface: rs-232c/ccitt number of ports: 3 modes: asynchronous or synchronous speeds: asynchronous -110, 150,300, 8) phisical specification environment: operating: storage: weight: (portl -- 3) 600,1200, 2400,4800 9600bps synchronous - 1200, 2400, (port 2) 4800, 9600bps 5c -- 35c 35 -- 80% -20c--60c 10--90% sokg per disk: 250.2skbytes 1001 kbytes per track: 3328bytes 6656 bytes 2 - 13 free datasheet http://www.0pdf.com 2.3.3 jd-850m 1) power supply power supply: frequency: power consump~ion: 2) processor micro processor: clock frequency: work size: no. of instructions: interruption: 3) memory dynamic ram: p-ram: static ram: 4) keyboard key codes: key modes: character unit: key kinds: interlock: repeat: 5) crt display 120v "v 10% 220-240v"v 1q% so/60hz (single phase) 1% 3.sa max. (120v) 1.8a max. (220v /240v) intel 808sa - 2 4mhz 8 bits 246 4 s6kbytes 2kbytes (2kbytes option) 2kbytes (for indication of crt) ascii unshift, shift, control, shift controi4-~tep shift change 8 bits numeric and alphabetic key tenkey cursor control key function key (pf i-pf 15 ,pel- pe6),ctrl,shiftlock, shift, rep, caps lock 2 key roll over continuous code output by rep key and other key speeds approx. looms display format: 24 lines x 80 characters (1920 characters) viewing area: 220mm x 16smm screen type: 12 inch p.39 green phosphor character generation: 7 x 12 dot matrix character field: lox 14 dot matrix video coritro1: 6) floppy number of dist drives: capacity (formatted) per disk: . per track: highlight, reverse, underline, blink 850m 2 1001 kbytes 6656 bytes per sector: sectors per track: tracks: transfer rate: latency( average): access time track to track: average time: setting time head load time: media: 850m 256 bytes 26 77 x 2 sookbits/sec 83ms 3ms 91ms isms soms dysan 3740-2ds256 7) communications interface interface: rs-232c/ccitt number of ports: 3 modes: asynchronous or synchronous speeds: asynchronous -110,150,300, 8) phisical specification environmen t: operating: storage: weight: 2 -14 (porti -- 3) 600, 1200, 2400,4800 9600bps synchronous - 1200, 2400, (port 2) 4800, 9600bps 5c -- 35c 35 -- 80% -20c -- 60c 10 -- 90% 50kg free datasheet http://www.0pdf.com 2.3.4 function block microprocessor is centered, around which provided are memories of 2kbytes p-rom and 56kbytes ram. additionally provided are 12 inch display, floppy 2 sets as for data ftle, keyboard as for i/o device and 3 channel communication interfaces as for external con- nection. block diagram is shown in fig. 2 - 11. 12k...,.. interrupt fig. 2 - 14 function block diagram 2.3.5 memory structure there are provided 32kbytes/56kbytes ram as for main memory and 2 kbytes ram as for display memory .. also p-rom has 2 kbytes. memory map is shown in fig. 2 - 12. dynamic ram l2k_ , 7fff "51----------1 hex eooo dynamic ram 24k_ 1----ram-2k-by- .. ---~} u ?? hex e7ff i-----------i crt buffer memory i for ind_ion ofcrti hex fooo i-----------i prom2kby" --------- ----- ------- prom 2k by... } option hex ffff ~------~ fig. 2 - 15 memory map 2 - 15 free datasheet http://www.0pdf.com 3. power supply 3.1 JD-700M/jd-740m power supply 3.1.1 block diagram JD-700M/740m power supply generates 3 kinds of stabi- lized dc power supply of 5v, + 12v and -12v which are required for control pcb, mini-floppy disk and monitor tv. constructionally, all circuits are assembled on one pcb for easy maintenance and inspection. block diagram of power supply is shown below. r----------------l i i i i i i i-- i i - 27v"v' noise switching i 20v"v filter regulator i , - f-- - ~ - i ~ i 220v"v i 240v"v i i i '-- i i switching i a: regulator f w i ~ '---- i a: i 0 u. i en i 2 ? i a: . i l- i i 12v i , series i 18v"v regulator i , i i i i i i ehbsc33b01tb l ___________________ i - fig. 3 - 1 power supply block diagram 3.1.2 specification (JD-700M/jd-740m) ? input voltage: 120v 'v 10% 220/240v'v 10% ? input frequency: 50-60hz ? output voltage/current: +12v/3.3a max. +sv/sa max. -12v/o.ia max. ? overall stability: s% or less 3 - 1 +12v :-:-: -control pcb output -mini fdd +12v:-:-: -monitor tv return +5v:-:-: output -control pcb -mini fdd +5v:-:-: - return - 12v :-:-: return -control pcb -12v:-:-: output 80v"v _ fan free datasheet http://www.0pdf.com jd700 n40 lac 100vl120v - ) ac/dc distribution a trans former sbctii to floppy uni t 1 connector e (/-480424-0) to floppy uni t 2 connector q (1- 480424 -0) to fan connector 5 (/- 480304-0) w n pin co (1- [0 (j- ma in po (sde358 .( ac lin (me-20 white (4:3'2 ij pin j4:3:2;tj blue j~ (/10121-1j t gray blue 2 yellow orange ~ ~ ~ i~ pin ltoc:~ " u u 3 green black orange u~ <:: ~ '"'t '"'t i~ (60620-11 i: 2 q '"'t 3~ -.j q: fin 12 red la.j i~ ~ 0..-- q:: ~o q:: " 10l21-/j i 70121-/l-=- c~ lu l:) ~ 0 ~ i~ ~ .ci: ector 4 0 10426-0) i 1:2:3 '4jpin(()0620-1) 'ector 3 i i: 2:3 :.1j pin (11oi21-/) 0424-0) ~ ~ i ullol5 pin(/70/21-j) ~ ~ l awg#lb connector 6 " qj)r:r~,jout ~/-480424-0) i 2 3 4 j r switch "2 . connector 7 i 2 3 4 j , ii ")2 1n (/-480426-0) ~ ~ pin' do()20-/) ynector ti.~ ) '7 la.jluit.... lu )q24-/ / . 2 piiviis0620-ii ~ lu "" "" "" "" """i~ <.::> "" "" t; t; 'nector i~ pin(l70121-1) ~ ~ ~ lu q q q ~i~ ~ ~ ~ ~ ~:q ~ ~ ~ '"'t '"'t jq23-ij ts ts ~ ~i~ :3 ~ ~ ~ ~1ci: iil ii5 ~ ~lgl~ ~ co ~ ~ ~ <:('"'t 00 q:l . -.j-.j ~~ . "ilter .~ . dc i ? i ? ac ac dc+5v dc +5v dc --i2v dc +12v dc+12v sg 27v ibv . sg -12v sg ~i~i -=- chassis dc powfr supply (fhb sc33801 r) model ~ .... connector ii 070q24-f) connec tor 10 ( 170q23-1) r-- red 6 black '5"" black --;,- black ooj blue -?" orange -. ;- '--:- f to -nonitor tv ~ - w ?c... no co:.. n8 03: -:::r (i)~ -to ~3: cd- c? -tn 0- 28 ?< - - ~ f to control pc81xp.s connector 12 (/-480270-0) 'n (170/21-11 connect/on pin 160620-/1 nalty japan JD-700M a c sill tch out -pin2-connector3-pin2 usa ac switch out-pin2-connector3:'pin3 JD-700M ac cord ( vm 0033) free datasheet http://www.0pdf.com 3.1.4 jd700mn40m 100v/120v. ac/dc distribution parts list l oc. part no. part name & description remarks vmoo33 ac cord 120v for u.s.a kr -51 cord bush 932006022 fuse holder 100v/120v fh-032 st6-125v5a time lag fuse 100v/120v 9 199 5 1 060 connector 170923-1 9 199 5 1 157 pin/r 170121-1 9 199 5 108 6 connector 170924-1 9 199 5 6 1 7 0 pin/p 60620-1 me-202v1 ac line f i l t e r sde3sb-l main switch 100v/120v 1-480424-0 connector 919951066 /i 1-480426-0 212d34300451 transformer sbctil 10ov/120v sbctii ehbsc33b01tb dc power supply ehbsc33b01t dc power supply vml182 ac cord 100v for japan 3-3 free datasheet http://www.0pdf.com w ~ transformer s8c t 21 w h i te r:=;j"j" blue (/-480304-0) -':;",~~-i connector 5 l black ( to fan i ~ ( ~~adn~e [.....-.----.......-.=.. pin 1170121-1 j connector 6 (/-480424-0) ....-:-~~:-t to floppy unit i to floppy unit 2 connector 8 connector q (1-~80424-0) pin (f-4b~4?4-0) 11' r? :! i "70121-/1 11 ; r? : ( i ...---"-----@:nitontv ~i:.cl~ uu~ ~1:3:s ~ q:qlcno =-=1~4j ljlj~ cli"q: ~ ~ l.u -.j -.j ~. q:cnqlo pin connector ii '606~-j) (l70q24-/j pin 112 connec tor 10 (/70121-1 j~ (j70q23-/) l:j~ ~u ~~ ~~ ~ ~ bt ?'- no a':" n8 03: -::::j cn~ -to ~3: cd_ c? -tn on 2~ n< ~ 8 < l connector 7 ~....,.....~_ (/-480426-0) pin ~~--------4-~~~~~-+----~~--~ 6 ------+-4--if---+---+-+-----f--~~~---i .. _f- to control pcb.dcps ,-+---~.j...li:..u---t ]-- connector 12 ...---f--+-f---f.--+-t-f--f----=.:~~:___i- ~ - (/- 480270 -0) "'-+--+-j-.f-+--~:..:.a.:..:..:~--t - or connector (170q2j-i) ac line filter (ne-202vj ~ -=chass/s connector 2 ::i ~ (170q24-/) 1 ; 2 pinl60620-i) connector i 1 : 2 pin(/ 10121-1 j (j70q23-1) *' ac cord ( 6'06'20 -i j ~l.t.j ~~i~~ ~~~ ~~~ u i..j ~~"q: -.j -..j en cq '---- pin ( i 1012/-1 j ~ ~~4., l4j t3 ~ ~~ ~ ""t "{ ~~ ~i ~i [5 '" ~ ~ :ac:1~1~1~ ljuulj "q:~"q:oo::( ~c6a5~ ac i ac idc+5v idc +5vidc 1~2~1 dc +12v idc+12v sg 27 v 18 v . . s g -12v s g dc power supply (ehb s~j380irb) model ~ ac cord connection australia vmoiib ac switch out-pin2-connectdr3-pin4 i JD-700M-a 240v ac british i 1-534-82012 240v ac JD-700M-e europe JD-700M-(j ~sl)(i),.,.s" ... ""l vmooqq 220 v a free datasheet http://www.0pdf.com 3.1.6 JD-700Mn40m 220v/240v ac/dc distribution parts list l oc. part no. part name & description remarks vm 0418 ac cord 240v for austral ia vm0099 " 220v for c ontirent(eui-dpe) 1-534-132012 " 240v for british kr - 51 cord bush fh-033 fuse holder 220v/240v s t - 2.5 a time lag fuse 220v/240v 919951060 connector 170923-1 9 1 995 1 157 pin/r 170121-1 9 1 995 1 086 connector 170924-1 9 1 9 9 561 7 0 pin/p 60620-1 me-202v1 ac line filter sde3sb-e-1 main switch 220v/240v 1-480424-0 connector 9 1 995 1 066 " 1-480426-0 212d34300461 transformer sbct21 220v/240v ehbsc33b01tb dc power supply 35 free datasheet http://www.0pdf.com z?vrv w 0) fs2 ibv ~ ci 4r;oa.f sov + + t (. ci5 w sjv el/ i~~1 . k 1 i 1 '~4.8kjll +c25 4'l/tf: 50v e21 471'f 2sv ie .3 d3/ ioei r22 3.3.(2 .i l ii ba 2so.-uh 04-/ iooo~~ 35v r/6-2 (vbst 3w l21 . 6~~50""h f i c24-1 zzoo,mf 16v r26-2 a.56~ 3w' t + + ci4-z iooo,llf 35v + c24-2 z200~f 16v +c32 zzo,lflf 16v +5v == 5 a",~ q t/2v == 3.3a""t..x g gr 0.1 a _'-" -12 v --- ~ ~ " en'- 00 x.:... mo 3: 0 ?3: .... ::;, -~ 00 ens: c o .~ :e m :xj en c "u ." r- -< iii :j: g: o ~ ~ ~ -i !!! free datasheet http://www.0pdf.com 3.1.8 parts layout (ehbsc33b01tb) ? ? fig. 3 - 2 parts layout dwg. 3-7 free datasheet http://www.0pdf.com 3.1 .. 9 JD-700Mn40m dc power supply (ehbsc33b01tb) parts list l oc. part no. part name & description remarks dbi kbpc802 diode bridge loa 200v db2 s2vb diode bridge 2a 200v ici ehd-sc305ri regulation ic ic2 ehd-sc312rl regulation ic ic3 i117912ct regulation ic qll, 21 2sc2334 transister q12, 22 2sa777 transister dll, 21 s6k diode d31 loel diode lll, 21 sn14-561 choke coil 6a 250~h rll, 21 erg2anj681 metal 680q 2w r12, 22 erd25tj332 carbon 3.3kq 1/4w rij, 23 erd25fj330 carbon 33q 1/4w r14, 24 erd25fj561 carbon 560q 1/4w r15, 25 ergianj182 metal 1.8kq iw rl6-1, 26-1 erf2akrio non flame o.iq 2w r16-2, 26-2 erf2akrio non flame o.lq 2w r17, 28 er025ckf4711 metal 4.77kq 1/4w r18, 27 er025ckf6201 i metal 6.2kq 1/4w cl ecet50r472sl electrolytic 4700~f 50y cii, 21 eceaies470 electrolytic 47~f 25v c12, 22 eceaiesioo electrolytic io~f 25v ~ eceaivsi02 electrolytic looo~f 35v c14-1,14-2 c24-1, 24-2 eceaics222 electrolytic 2200~ 16v c15, 25 eceaihs470 electrolytic 47~f 50v c16, 26 eceaicsioo. electrolytic - io~f 16v c31 eceaihs471 electrolytic 470~f 50v c32 eceaics221 electrolytic 220~f 16v cl7 ecqmihi03mz plastic film io,ooopf 50v c27 ecqmihl54mz plastic film 150,ooopf 50vi c13, 23 eckdih332kb2 ceramic 3300pf 50v fsi fuse f5a fs2 fuse f2a f2041a20l-iop i terminal 38 free datasheet http://www.0pdf.com 3.2 jd-800m/jd-840/jd-850m power supply 3.2.1 block diagram jd-800m/840m power supply generates 4 kinds of stabi- lizeddc power supply of +24v, +12v, +5v and -12v which are required for control pcb, floppy disk and monitor tv. constructionally, all circuits are assembled on one pcb for easy maintenance and inspection. block diagram of power supply is shown below. r- - - - - - - - - - - - - - - - - - -i 1 i i i - 2ov"v - 220 240 v"v v"v i-- noise filter i-- a: w :e a: 0 u. en z en ~ o blue ac line r ljj -. filter i (gt:-205vi ) l t __ ac cord iv/lt70033) ~t i-~-i fuse holder i i i fh-032 i i i fuse i_:j ist6-l?5vsa) in traivsfcrmer islj..i.j.j i i i i i black. i i i i i i t':_j dc power supply , eh8s,34eiq1i.j i d.n 3.2.4 jd-800m/840m 1 oov /120v ac/dc distribution parts list loc. part no. part name & description remarks vm0033 ac cord 120v for u.s.a kr - 51 cord bush 932006022 fuse holder 100v/120v fh-o 3 2 st6-125v5a time lag fuse 100v/120v 919951060 connector 170923-1 9 1 995 1 157 pin/r 170121-1 9 199 5 108 6 connector 170924-1 9 199 5 6 1 7 0 pin/p 60620-1 gt-205vl ac line filter sde3sb-l main swi tch 100v/120v 1-480424-0 connector 919951056 " 1-4804:26-0 256034300471 transformer sbct31 100v/120v 350550-1 pi n/r only for id 840m ehbsc34boitb dc power supply f126-5p termi nal vm1182 ac cord 100v for japan 3 - 11 free datasheet http://www.0pdf.com w ~ i'j ac line -lj 0- filter i (gt-205 ccyvnect2 1j70.9~-1j1 i i ~ ~ni60620-/1 connect i 1 1 'n 111012./-1 j (/70923-/) . brown chassls~ c in ::::> a(220 ac200y \~ .jl.240y t ccyvnect 71/70.923-11 pintl70121-1 j fonnect81170sj2t1-/) pin(60620-ij i lli1 t 12 1 @==:> to mdlvi tor tv ~ i .sg(ti2r) fan tlzcf an 6e. i -12 v z sa (tfll) --- os it -iu) - .3_. ==:::::>to con trol pcb s r.. (~j't) - -'-- dcps u 1'- connects) (/- 480270-0 i ts'"v rej) -{- pin (170121-11 z ~ a)ci(-'lv) i=}~~==:::>to flopp, uniti t -, - ow r{-- connect 10 1i-48j2io-oj ~a (t-rr) --[. pin 1110121-1 ) w n en ?'- 0 0 -do cc) oc) c 3c -- en oo -4~ ::cc) -3c al_ e? -4n on z~ "11< ~ ~ < 1 ko---- - .. - "" i ~:i}i -- - - j 3 "....,..... ". . l (wejs584j aci03v trray ( ~ [i ac 10j v black ==>to floppy uniti connecti2 i i ci) l_.-j mapk* model lfiiiaustral,"r) for (nnt;f1f'f?neijroilel ifnr british l l connect6 (1-48030s -0) pin (60620-/) connects (, 1-4m304 -0) pin( i ac cord c(jvnect 3 cofl."iection vmo//8 /wain powerswit(j-/out-~/n-covf\f(!3-3 v/~"oo9.9 vl1;j../n potvf,~si,1'ltchoui -2pin-,>((l{iinea'j-s as hain pcjvi/ersjfitqjoui -2pin-c(\fbvect3-3 (/-400304 -0 j for jd800 u l/-4b01cxj-o }for' jd840u to froppy unit 2 connect 13 . (/-4803j4-01 for jdocjou i/-480700- 0jf or jd8l10u pin (/7[)i21-1 j for jdfioo (350s50-lifcr jd8ljo free datasheet http://www.0pdf.com 3.2.6 jd-800m/840m 220v /240v ac/dc distribution parts list l oc. part no. part name & description remarks .. -.- vm 0418 ac cord 240v for austraria v mo 0 9 9 " 220v for con tinen t(europe) 1-534-82012 " 240v for b r i tis h kr- 51 cord bush f h- 0 3 3 fuse holder 220v/240v st-2.5a time. lag fuse 220v/240v 9 1 9 951 060 connector 170923-1 9 1 995 1 157 pi n/r 170121-1 9 1 995 108 6 connector 170924~1 9 199 5 6 1 7 0 pin/p 60620-1 gt-20sv1 ac line f i l rer sde3sb-e-l main swi tch 220v/240v 1-480424-0 connector 9 1 995 1 066 " 1-480426-0 256034300481 transformer sbct41 220v/240v 350550-1 pin/r only for jd840m ehbsc34bq1tb dc power supply f126-5p terminal \ 313 free datasheet http://www.0pdf.com w ..... ,1:1. a.cin 100" 11 sv 200 " ~ t n:. cord 230" mown t it fuse acoov k11sv cont-.a::ct 1 connect 1 to switch 8.2.8 jd-850m 220v /240v, 120v ac/dc distribution parts list l oc. part no. part name & description remarks vm 0418 ac cord 240v for austraria v mo 0 9 9 " 220v for continentceurope) 1-534-82012 " 240v for british kr - 51 cord bush f h- 0 3 3 fuse holder 220v~/240v st-2.5a time lag fuse 220v/240v 9 1 995 1 060 connector 170923-1 9 1 995 1 157 pi n/r 350650-1 9 1 995 1 086 connector 170924-1 9 199 5 6 1 7 0 pin/p 350690-1 gt-205v1 ac line filter sde3sb-e-l main swi tch 220v/240v sde3sb-1 main switch 100v/120v 1-480706-0 connector - 919951066 connector 1-480707-0 - -- 256034300481 transformer sbct42 220v /240v 350550-1 pin /r ehbsc34b01tb dc power supply f126-5p terminal vm0033 ac cord 120v for u.s.a vm1182 ac cord 100v for japan 932006022 fuse holder 1 oov /120v fh-032 st6-125vsa time lag fuse 1 oov /120v 3 - 15 free datasheet http://www.0pdf.com w en 32 v "v 2.4a z?v rv 2.0a ibv '""'--' o.3sa fsj ~ ezi ioo~f 63\1' ; + e22 4')t1f 2sv .c3/ ioojjr: 63v ri2 3.3)(2 [32 u-_, ? 1 4]":1 ,.-- 1 i r'""""! 50v i c41 t 470~f 50v 041 joel lii 6a z50,.,h dii s6k rib o.185l 3'(j r2b 0.1 !i 2w ci? 1000~f 35v c2? iooo,.f .35 v ~ -t t on: -t 12100 (42 220* ibv ... ,-!if 16v +24v i. ?ama.-j. (;;,(+24v) + 12 v === 1.5 a wi...x (;, (t/2v) + 5 v ::-::-:: 6.2 a w\~" 6 (+ 5v) g (-/2v) 0.35 al'\o.x -/2 v w ~ cd (1)'- no ::i: do mo 3: 0 ?3: ~i no (l)s: ~ o 3: o n "'d i m ::c (i) c "'d "'d r- -< m :i: to (i) n ~ to o - -4 ~ free datasheet http://www.0pdf.com 3.2.10 parts layout (ehbsc34b01tb) o ... 011 """ ai' , black 1.j4p .. 'c ? all __ .j!_ ~e o i~d:i --, .'-----' i , ? r3i-t l __ ..j obl --jj-- + 1 i.... ~ 031 q3. e c i ! i n -<>- "j' f'! d f"" j':o-~.. tal' j'~' al.t ~ qj2 +0'" '" - 011 r-- i i i l- __ ..j ic4 23. fs i f5a 04. f c4. -8+ [jj l-- ::~- :::=j~~: '6' + r 1~g5-- ibtscdc31 -it- rt\ c37-t + i + c34~ + e3l fsl f5a dad + cdc42 --"'- i .. jl2 fs3 f2a m~t~l~i'~'i 0 0.j3 rl'\.j15rl'\ - - ~~~,_ r--j~----o - 0:-' - _-_:3.- .j16 -- o swm-iiia fig. 3 4 parts layout dwg. 3 -17 ? ? ? ? free datasheet http://www.0pdf.com 3.2.11 jd-800m/840m/850m dc power supply (ehbsc34b01tb) parts list l 0 c. part no. par.t name & dbl, 2 kbpc802 diode bridge db3 s2vb diode bridge ici ehdsc312rl reguration ic ic2 ehdsc324rl reguration ic ic3 ehdsc305rl reguration ic ic4 im7912ct reguration ic qii,21,31 2sc2334 transister q12,22,32 2sa777 transister dil,21,31 s6k20 diode d41 loel diode lll,21,31 sn14-561 choke coil rll, 21 erg2anj821 metal r3! erg2anj.681 metal ri2,22,32 erd25tj332 carbon ri3,23,33 erd25fj330 carbon r14,24,34 erd25fj561 carbon r15,25,35 ergianjl82 metal r16, 37- er025ckf6201 metal r17, 36 er025ckf477l metal rl8 j 28, erf2akrio non flame 3 8 -1,38-2 r27 er025ck332l metal r39 er02 sckf62ro metal r40 er025ckf2s00 metal r26 er025ckf620l metal cl ecet63r332sl electrolytic c2 ecet50r472sl electrolytic cli,2l,3l eceaijslol electrolytic cl2,22,32 eceaies470 electrolytic c13,23,33 ecealesioo electrolytic c14, 34 ecealcsloo electrolytic c24 ecealhsorl elec.trolytic c17, 27 ecealvslo2 electrolytic c37-1,37-2 ecealcs222 electrolytic c4l ecealhs47l electrolytic c42 ecealcs22l electrolytic c16,26,36 eckdlh332kbz ceramic cl5,25,35 ecqmlhlo3mz plastic film fsl, 2 fuse fs3 fuse 318 description remarks 2a loov - 820q 3w 680q 2w 3.3kq 1/4w 33q 1/4w s60q 1/4w l.8kq lw 6.2kq l/4w 4 .. 77kq l/4w o.lq 2w 3.32kq 1/4w 62q 1/4w 250q l/4w 6.2kq 1/4w 3300llf 63v 4700llf sov looilf 63v 471lf 25v loilf 2sv loilf l6v o.lilf soy 1,oooilf 35v i 2,2001lf l6v 47 0 llf soy 220llf 16y 3300llf 50v lo,ooopf sov 5a 2a free datasheet http://www.0pdf.com 4. keyboard 4.1 outline this keyboard consists basically of microprocessor, p-rom and keyswitch. as primary functions, it provides 4 kinds of shift func- tions, i.e. unshift, shift, control and control shift, caps lock and capslock shift and data code output is generated by ascii code. 4.2 keyboard layout i pe1 i pe21 pe31 pei pes i pes i *' *' 1 i 2 3 e n t 0 r y *2 lamp key ., ascii i british i french \german [jjiujiitjioj 3 i: 3 i 3 i 3 r:l1q]![jlrtl lji t i 1\ !~ cd'cd:[jj;~ cd itjiitj!c] ) i i ; m m dl0 d'd,itjigj \ i \ (: i , ~i ~ ~ ~ y i i 0 0 0 c:j c] c] it] g fig. 4 - 1 keyboard layout (ascii i - 4 - 1 free datasheet http://www.0pdf.com 4.3 keyboard code table ~e unshift ctrl (unshift) ~ shift ctrl (shift) coce coce 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 symbol 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 ~"ivbjl "" pf1 0 0 c 0 pfl 0 0 c 0 pf2 0 1 c 1 pf2 0 1 c 1 pf3 0 2 c 2 pf3 0 2 c 2 pf4 0 3 c 3 pf4 0 3 c 3 pf5 0 4 c 4 pf5 0 4 c 4 pf6 0 5 c 5 pf6 0 5 c 5 pf7 0 6 c 6 pf7 0 6 c 6 pf8 0 7 c 7 pf8 0 7 c 7 pf9 1 0 0 0 pf9 1 0 0 0 pf10 1 1 0 1 pf10 1 1 0 1 pf11 1 2 0 2 pfll 1 2 0 2 pf12 1 3 0 3 pf12 1 3 0 3 pf13 1 4 0 4 pf13 1 4 0 4 pf14 1 5 d 5 pf14 1 5 d 5 pf15 1 6 d 6 pf15 1 6 0 6 pel 1 7 0 7 pel 1 7 0 7 pe2 1 8 0 8 pe2 1 8 0 8 pe3 1 9 0 9 pe3 1 9 0 9 pe4 1 a 0 a pe4 1 a 0 a pe5 1 8 d 8 pe5 1 8 d b pe6 1 c 0 c pe6 1 c 0 c 1 3 1 f 1 1 2 1 e 1 2 3 2 f 2 " 2 2 e 2 3 3 3 f 3 # 2 3 e 3 4 3 4 f 4 $ 2 4 e 4 5 3 5 f 5 % 2 5 e 5 6 3 6 f 6 & 2 6 e 6 7 3 7 f 7 2 7 e 7 8 3 8 f 8 ( 2 8 e 8 9 3 9 f 9 ) 2 9 e 9 0 3 0 f 0 - 5 f 9 f 3 a f a ? 2 a e a - 2 0 e 0 = 3 0 f d 1\' 5 e 9 e ,..., 7 e 8 e del 7 f b f del 7 f b f q 7 1 8 1 q 5 1 9 1 w 7 7 b 7 w 5 7 9 7 e 6 5 a 5 e 4 5 8 5 r 7 2 8 2 r 5 2 9 2 t 7 4 8 4 t 5 4 9 4 y 7 9 b 9 y 5 9 9 9 u 7 5 b 5 u 5 5 9 5 i 6 9 a 9 i 4 9 8 9 0 6 f a f 0 4 f 8 f p 7 0 8 0 p 5 0 9 0 . [ 5 .8 9 8 { 7 b b b 4-2 free datasheet http://www.0pdf.com keyboard code table (cont'd) ~ unshift ctrl (unshift) ~ shift ctrl (shift) code code symbol 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 symbol 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 *] 5 0 9 0 } 7 0 b 0 return 0 0 c 0 return 0 0 c 0 a 6 1 a 1 a 4 1 8 1 s 7 3 b 3 s 5 3 9 3 d 6 4 a 4 0 4 4 8 4 f 6 6 a 6 f 4 6 8 6 9 6 7 a 7 g 4 7 8 7 h 6 8 a 8 h 4 8 8 8 j 6 a a a j 4 a 8 a k 6 b a b k 4 b 8 b i 6 c a c l 4 c 8 c 3 b f b + 2 b e b *@ 4 0 8 0 , 6 0 a 0 *\ i 5 c 9 c 7 c b c line \ 0 a c a line 0 a c a feed feed z 7 a b a z 5 a 9 a x 7 8 b 8 x 5 8 9 8 c 6 3 a 3 c 4 3 8 3 v 7 6 b 6 v 5 6 9 6 b 6 2 a 2 b 4 2 8 2 n 6 e a e n 4 e 8 e m 6 0 a 0" m 4 0 8 0 2 c e c < 3 c f c 2 e e e > 3 e f e / 2 f e f ? 3 f f f tab 0 9 c 9 tab 0 9 c 9 (sp) 2 0 e 0 (sp) 2 0 e 0 7 3 7 f 7 7 3 7 i f 7 8 3 8 f 8 8 3 8 f 8 9 3 9 f 9 9 3 9 f 9 - 2 0 e 0 - 2 0 e 0 4 3 4 f 4 4 3 4 f 4 5 3 5 f 5 5 3 5 f 5 6 3 6 f 6 6 3 6 f 6 + 2 b e b + 2 b e b 1 3 1 f 1 1 3 1 f 1 2 3 2 f 2 2 3 2 f 2 3 3 3 f 3 3 3 3 f 3 entry 0 0 c 0 entry 0 0 c 0 0 3 0 f 0 0 3 0 f 0 ? 2 e e e ? 2 e e e home 0 f c f home 0 f c f t 0 e c e t 0 e c e +- 0 8 c 8 +- 0 8 c 8 - 0 c c c - 0 c c c .j. 0 b c b .j. 0 b c b 43 free datasheet http://www.0pdf.com keyboard code table (contrd) ~ capslock and ctrl ~ capslock and ctrl unshift (capslock & unshi ft) shift (capslock & shift) code code - symbol 7 6 5 4 3 2 1 0 76543210 svmb>l 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 pfl 0 0 c 0 pfl 0 0 c 0 pf2 0 1 c 1. pf2 0 1 c 1 pf3 0 2 c 2 pf3 0 2 c 2 pf4 0 3 c 3 pf4 0 3 c 3 pf5 0 4 c 4 pf5 0 4 c 4 pf6 0 5 c 5 pf6 0 5 c 5 pf7 0 6 c 6 pf7 0 6 c 6 pf8 0 7 c 7 pf8 0 7 c 7 pf9 1 0 d 0 pf9 1 0 d 0 pf10 1 1 0 1 pf10 1 1 0 1 pf11 1 2 0 2 pf11 1 2 d 2 pf12 1 3 0 3 pf12 1 3 0 3 pf13 1 4 d 4 pf13 1 4 d 4 pf14 1 5 0 5 pf14 1 5 0 5 pf15 1 6 d 6 pf15 1 6 0 6 pel 1 7 0 7 pel 1 7 0 7 pe2 1 8 0 8 pe2 1 8 0 8 pe3 1 9 0 9 pe3 1 9 0 9 pe4 1 a 0 a pe4 1 a 0 a pe5 1 b 0 b pe5 1 b d b pe6 1 c d c pe6 1 c 0 c 1 3 1 f 1 i 2 1 e 1 2 3 2 f 2 .. 2 2 e 2 3 3 3 f 3 # 2 3 e 3 4 3 4 f 4 $ 2 4 e 4 5 3 5 f 5 % 2 5 e 5 6 3 6 f 6 & 2 6 e 6 7 3 7 f 7 ., 2 7 e 7 8 3 8 f 8 ( 2 8 e 8 9 3 9 f 9 ) 2 9 e 9 0 3 0 f 0 - 5 f 9 f 3 a f a ? 2 a e a - 2 0 e d = 3 0 f 0 /\ 5 e 9 e - 7 e b e del 7 f b f del 7 f b f q 5 1 9 1 q 5 1 9 1 w 5 7 9 7 w 5 7 9 7 e 4 5 8 5 e 4 5 8 5 , r 5 2 9 2 r 5 2 9 2 t 5 4 9 4 t 5 4 9 4 y 5 9 9 9 y 5 9 9 9 u 5 5 9 5 u 5 5 9 5 i 4 9 8 9 i 4 9 8 9 0 4 f 8 f 0 4 f 8 f p 5 0 9 0 p 5 0 9 0 [ 5 b 9 b { 7 b b b 4-4 free datasheet http://www.0pdf.com keyboard code table (cont'd) ~ capslock and ctrl ~ capslock and ctrl unshift (capslock & unshifti shift (capslock & shift) code code syiv8)l. 7 6 5 4 3 2 1 0 76543210 syi\tb)l 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 ] 5 0 9 0 } 7 0 b 0 return 0 0 c 0 return 0 0 c 0 a 4 1 8 1 a 4 1 8 - 1 s 5 3 9 3 s 5 3 9 3 0 4 4 8 4 0 4 4 8 4 f 4 6 8 6 f 4 6 8 6 g 4 7 8 7 g 4 7 8 7 h 4 8 8 8 h 4 8 8 8 j 4 a 8 a j 4 a 8 a k 4 b 8 b k 4 b 8 b l 4 c 8 c l 4 c 8 c 3 b f b + 2 b e b @ 4 0 8 0 , 6 0 a 0 \ 5 c 9 c 7 c b c line 0 a c a line 0 a c a feed feed z 5 a 9 a z 5 a 9 a x 5 8 9 8 x 5 8 9 8 c 4 3 8 3 c 4 3 8 3 v 5 6 9 6 v 5 6 9 6 b 4 2 8 2 b 4 2 8 2 n 4 e 8 e n 4 e 8 e m 4 0 8 0 m 4 0 8 0 2 c e c < 3 c f c 2 e e e > 3 e f e / 2 f e f ? 3 f f f tab 0 9 c 9 tab 0 9 c 9 (sp) 2 0 e 0 (sp) 2 0 e 0 7 3 7 f 7 7 3 7 f 7 8 3 8 f 8 8 3 8 f 8 9 3 9 f 9 9 3 9 f 9 - 2 0 e 0 - 2 0 e 0 4 3 4 f 4 4 3 4 f 4 5 3 5 f 5 5 3 5 f 5 6 3 6 f 6 6 3 6 f 6 + 2 b e b + 2 b e b 1 3 1 f 1 1 3 1 f 1 2 3 2 f 2 2 3 2 f 2 3 3 3 f 3 3 3 3 f 3 entry 0 0 c 0 entry 0 0 c 0 0 3 0 f 0 0 3 0 f 0 2 e e e 2 e e e home 0 f c f home 0 f c f t 0 e c e t 0 e c e - 0 8 c 8 - 0 8 c 8 - 0 c c c - 0 c c c .j. 0 b c b .j. 0 b c b 45 free datasheet http://www.0pdf.com .4.4 description of operation 4.4.1 push key switch, then p-rom address output is generated by microprocessor and code data output is generated from p-rqm. additionally, key strobe output is generated. when rep key and a data key are pressed in this order, key strobe signals are repeatedly produced at the period of about 1 ooms ~hi1e the rep key is kept pressed. output timing -----i l key in out data stro be repeat timing repeat i strobe ,~ j~ .. t1 t2 t4 t3 h ~i i-i--- t1 = 20ms max. t2 = 500~s max. t3 = 5 - 10~s t4 = 20ms min. t4 represents the required minimum key on time. there are cases where no signal is produced if the key on time is less than this level. il1+t~l =: 100ms :: ~i fig. 4 - 2 timing chart 4.4.2 indicated in no.2 of this manual. mpd8035lc microprocessor 4.4.3 shift mode shift condition consists of 5 kinds of unshift, shift, ctrl unshift, ctrl shift, capslock. on power- switching in, shift condition is unshift. each shift condition is held while corresponding shift key is made on. however, shift lock key locks shifted condition electrically when once made on. then shift lock key lamp lights. on shift lock condition, shift condition does not change even if shift lock key is turned on again. release of shift lock is mode by turning shift key on. 4-6 in addition, if ctrl key is turned on during unshift, ctrl unshift condition is established. when ctrl key is made on during shift, ctrl shift condition appears. by turning capslock key on, unshift or shift condition can be fixed to capslock condition. then capslock key lamp lights. also, in case that capslock condition is fixed by capslock key, it can be returned to unshift or shift condition by turning capslock key on again. free datasheet http://www.0pdf.com ~ ...... 8035 ... 5v p i~xtal' ilpcl j ~txtalz 611hj / juuul.. gi1hi +sv ij +it' zuvs$ ji p21 p261j'i pzs h __ _ p24 h zj --- 7l rl tsv to /.f~s --=tj- +5v hv '1415' ih j ,----- m - t tsv ?f~~ fit cps \::..:)lck l-g"s;ls tn f 1.i+.rv u.i. find cg- ell cf c. h~f l1.tiif 47~1' ,u)(6 ltv "v ? yb panel ? z't fii ~ !n - ci) n l: m. 3: l> -4 g ~ in ~ m -< ~ l> ::u c iii cd o ~ cd l> ci) n free datasheet http://www.0pdf.com .a::. . 00 () n ri2. zb (") i j c' x tal () () t"") f ...,j i d sbckbasc parts list (cont'o) l 0 c. part no. part name & description remarks ci ddi04b220k ceramic, 22pf 50v c2 ddi04b220k ceramic 22pf 50v~ c3 cs02hidiook tantal 10ij.f 20v c4 ce02w470 electrolytic 47ij. f 16v c5 825001410 ceramic o .11j.f 12v dd600-bci04m12v c6 825001410 ceramic o.iij.f 12v " c7 825001410 ceramic o. iij.f 12v " c8 825001410 ceramic o.iij.f 12v " c9 825001410 ceramic o.iij.f 12v ii cio 825001410 ceramic o.iij.f 12v ii cii 825001410 ceramic o.lij.f 12v ii ck4c208b key switch ck4c214b' key switch led key ch3280la guide pin ck42602a cushion rubber dica-24c-tl socket hc-ib/u i crystal 6mhz . i 4 10 free datasheet http://www.0pdf.com 5. monitor tv 5.1 outline a 12 inch frame type crt display which can display 1920 characters. 5.2 monitor tv layout (deflection (crt) yoke) '--. ~' .. - f-i"""'fre~' 'rt ~ ... - ~-(bracket for side plate) (grounded -----.!l~ spring) i. .... -z.-.:-(bracket for side plate) (side plate) ----+-~ (side plate) (pcb holder) --+-+-~- :--:!~--'f-+---- (pcb holder) (bottom plate) (pcb) (pcb holder) fig.s-' layout (1/2) (horiz. drive trans.) (fuse holder) (lc31) (lc41) (horiz. lin. coil) i r..lf-lm---.f-(dynamic focus coil) (fuse) l (v-l2n) -+-----+--' (v-hold) -~~-~ (fl yback trans,) (h-hold) (brt) (crt socket) v.r. fig. 5 - 2 layout (2/2) 5-1 free datasheet http://www.0pdf.com 5.3 points and method of control with variable resistors no. point of control method of control remarks 1 v. hold control the vertical hold when characters ? carry out these controls after the crt (vr31) flow upward or downward. display has been warmed up for 30 v. height control the vertical amplitude of the picture. minutes. 2 (vr32) (158 7mm) ? make brightness control to the point 3 v. lin control the character heights so that they are at which the raster disappears with the (vr33) equal between upper and lower positions. contrast knob turned between h.hold control the horizontal hold so that characters minimum and maximum positions. 4 (vr41) are located at the center of the raster. ? make contrast control to the best point. 5 h. width control the horizontal amplitude of the (l403) picture. (213 1 omm) 6 focus control the all-round focus of the picture. (vr64) (after control with l406) dynamic 7 focus control the peripheral focus of the picture. (l406) 8 bright control the brightness of the picture. (vr67) - contrast control the contrast of the picture. centering control centering so that characters are 9 magnet of deflection yoke located at the center of the screen. 9---~--_ 3 -----+-#-- ....... 7 2----==----' 4--------------------' fig. 5 - 3 5-2 free datasheet http://www.0pdf.com 5.4 schematics configuration 5.4.1 block diagram v. sync video in +vs 12v h.sync sync sepa sync,lnv. q17 horiz., osc drive ic41 fig. 54 5-3 video out q14 vertical deflection free datasheet http://www.0pdf.com 5.4.2 connector connect~on diagram vertical input signal +1.2v r data input horizon ~ tal input signal ~contr ast q ground 1 ground connect or kd 0 ? cd ? @ cd ? ? @ '. . fig. 5 - 5 5.4.3 timing chart horizontal input signal u i +4 1 .5v (h.s] ~ o~oo.4v i i i i i i 10",5 i i _ : .. 65",s -: 1.8 "'s ii i --, '-- d~~~;:~; i~iiiiii~~iiii~iiiii~iii~ : inmmnmm:~iiiiiii~iii~mnmrrmmllllllllll~lirmmnmmtlllll~~ij i i i ---' 15",s r--- 50"'5 -----1 .: i i i +31.5v o +oa v -0 n n +4,1.5v vertical input signal ------4. . l l o+oav i i 1-0 --: 1.63~ : i ms i i i i i.. 23.7ms ,.1 i i 500~s :: ~1-4- ii d~~~ ;:~~ ~iiiiiiiiiiiiiiiiiiiii~iiiii'~ mmmmmmlllllllllllllllllnmmmmtltl'lilillilililili~rmmmmmtllilillililillilil iic:~~v i i i -0 i i i ~ 2.2ms ;'iii 21.9ms -\ i i fig. 5 - 6 5-4 free datasheet http://www.0pdf.com 5.5 description of monitor tv 5.5.1 video circuits o video output circuit roo1 r144 fig. 5 - 7 video output circuit (a) video signals of positive polarity obtained from the control pcb are amplified with q 14 by one step and become video signals of negative polarity, and are then impressed to the cathode of the crt. ~ crt circuit. (a) the crt reproduces light and darkness of a picture by such properties that light emission is made when electrons collide against fluorescent substances on the inside surface of the crt. (b) electrons discharged out of cathode (k) are at first controlled by the potential difference between k and gland are further accelerated by g 2 before they make collision against the fluorescent surface. (c) the potential difference between k and g i varies by video signals of negative polarity impressed to the cathode, and produces light and darkness of the image. (d) the electron flow accelerated with g2 tends to make dispersion due to repulsive 'force among ele- ctrons. therefore, the electron flow is concentrated by impressing a voltage of 0 to 400v to the forcus (g4) electrode. 5-5 fig. 5 - 8 i mage period ,- -1 jljljl fig. 5 - 9 free datasheet http://www.0pdf.com @] brightness control (a) brightness control is made through control of elec- tron beams by changing the voltage impressed to g 1 of the crt with vr67. when gl voltage decreases, the potential difference between k and g 1 increases, resulting in reduction of electron beams and darken- ing of the picture. when g 1 voltage increases, on the other hand, the picture becomes lighter as a result of the operation opposite to what was described above. (b) the flyback pulses of negative polarity are rectified with d51, and are produced at point a as a negative voltage. a positive voltage obtained by rectifying positive pulses of flyback transformer's terminal 1 with 046 is impressed to point b. [e.j spot killer circuit (a) when the power is off, the deflection circuit stops within a short period of time. in the crt, however, electrons in the crt are focused to the vicinity of the center of the picture and this area becoems very bright because high voltage is accumulated and re- mains between the internal conductive fllm and the external conductive fllm of the anode. accordingly, there is a fear that the fluorescent surface of the crt is burnt. the spot killer circuit is provided for pre~ venting occurrence of the phenomenon stated above. (b) when the power is on, charging current flows to c463, and it is charged in the polarity shown in fig. 5 - 11. (c) when the power is off, the voltage at points a and b drops to ov, but g 1 is of ~ potential because of the electric charge charged in c463. consequent- ly, such a state that facilitates flow of beams in the crt is produced and thus spot phenomenon is prevented. 5-6 047 fbtcd--~..., sl ? d48 + c463 fig. 5 - 10 r601 g1 - + fig. 5 - 11 free datasheet http://www.0pdf.com 5.5.2 vertical deflection circuit <1c.31) pulae saw-tooth output vertieal f1ybaek wave ..... - ___ f--~~ circui t ...-~ ... generation oscillation' ~r1.ve. c1reui t c:1reu1 t "e1reu1t 4-.6v,.-p ~ v. d. ; r301 c303 ..jl c304- 3.3v d31 +b . (z3.7ms) + yoke c310 fig. ~ -12 vertical deflection circuit (a) on-off of the vertical oscillation circuit is made by charge and discharge of c304, and pulsewise oscilla- tion waves of 42.2hz can be taken out as the oscilla- tion frequency. ethe vertical oscillation frequency is controlled to 42.2hz by changing the on-off time constant of the vertical oscillation circuit by varying the charge- discharge time constant of c304 with vr31. (b) the saw-tooth wave generation circuit generates a saw-tooth wave voltage by charge and discharge of c305 and c306 through on-off operation by vertical oscillation pulses. compensation of vertical linearity is made by super- posing the saw-tooth wave voltage between c305 and c306 with the parabolic voltage obtained by differen- tiating the saw-tooth wave current on e side of c31 0 with c306 and vr33. evr32 ..... vr for controlling the amplitude by vary- ing the extent of charge of c305 and c306. e vr33 ...... vr for compensating linearity by varying the feedback saw-tooth wave voltage. 5-7 (c) the saw-tooth wave voltage is amplified by one step and polarity conversion is made with the drive circuit. (d) saw-tooth wave current for vertical scanning is pro- duced by the vertical output circuit, and this current flows to the deflection yoke. (e) d31 and c309 constitute the boost up circuit. high efficiency vertical output circuit that makes use of flyback pulses is provided. free datasheet http://www.0pdf.com 5.5.3 horizontal deflection circuit 2.5vp-p (65,ms) jt. ~ horizontal oa:::1llat1on (le4/) l403 denection coil +8 \ r404l)- r4?4- 30v,.-p (65/,,5) vr4/ r4.01 if 160v p _p (~5~s) t n\ 170 vp-p (65/'5) fig. 513 horizontal deflection circuit (a) q18 makes polarity conversion of horizontal synchro- nizing signals. (b) afc circuit makes phase detection of horizontal synchronizing signals, makes phase comparison with the flyback pulses input to ic terminal 3 , impresses its output 4 to ic terminal 9 and thus automatical- ly controls the horizontal oscillation frequency. (c) the horizontal oscillation circuit causes oscillation in the ic by making use of charge and discharge of c40s and c406 of tenninal 8 . vr41 is used for varying the oscillation frequency by changing the discharge time constant of c40s and c406. (d) the output of the horizontal oscillation circuit is taken out as pulse waves of 15370hz out of tenninal 7 , and is impressed to horizontal output tr of q44. (e) horizontal output transistor q44 performs switching operation with pulse waves described in paragraph (d) above, supplied saw-tooth wave current to the deflec- tion coil and thus makes horizontal deflection. l403 is the coil for controlling the horizontal ampli- tude. horizontal amplitude is controlled by regulat- ing the current supplied to the deflection coil by changing the inductance. (0 r442, d49 and c445 constitute the boost up circuit. the flyback pulses of negative polarity generated at fbt tenninal 5 are smoothened with d49 and c44s, and +b line of the horizontal output circuit is lifted by 8 potential generated at tenninal 6 . (g) the flyback pulses generated in the horizontal fly- back period with the flyback transformer are boosted and rectified, a high voltage of 14kv is generated and is impressed to the anode. (h) the output of terminal 2 of the flyback transformer is rectified with 044, a voltage of dc 600v is gener- ated and is impressed to g2 of the crt. 58 (i) the output of terminal 1 of the flyback transformer is rectified with d4 7, and a voltage of dc 40v is taken out. g) the dynamic focus voltage is generated by the reso- nance circuit of c466, c468 and l406. it is impres- sed to g4 of the crt for controlling the peripheral focus. free datasheet http://www.0pdf.com l ~ .r'yjmf u i 4 y 'r \ c/~b;---t4~'(fbt)lt. sqv rtf 80838 i l l_ - i focus i j u1 en --,~ :j: m 3: ~ ~ 11 free datasheet http://www.0pdf.com q44 b -6.5v c 12v e -6.3v u1 o fd t a: > sua aright ,j 463 e c b ic41 1 -1.25v 4 3.2v 7 10.3v 1 2 8.7v 5 0 8 6.5v 2 3 5.0v 6 10.8v 9 2v 3 - -~- 4 ,hli~'~~.~ ~ i' 3 tr: ~ 018 017 014 ov e 0 j b 0.3v 0.43v c ld.dv i c 4.0v 0.55v i b d.1v e 0.2v fig. 5 - 14 layout (solder side) icll 6.3v 5 o.45v 9 11.0v u1 3.8v 6 0.42v 10 6.0v ~ 0 7 0 11 1.0v 0.3v 8 6.0v 12 11.5v r- ? -< 0 3: c -i ~ y"m'740.' ~04 j c~7 !?!!. ~b ~ dlt vr7' 1j.~ .. ~' r d2 81 b ~ ~:ii~ 72 (i) c706 b~1r i i '1~ rioi y ~ _ it gt ,\..\~\ ./ .. ~ 0 rj, v., f - ;'17 irr.' ) '+.7.0...... ~ , vi !) 4' parts list (cont'd) . tr-12dg9f l oc. part no. part name & description remarks ic31 an5763 ic vert-osc drive out ic41 an5752 ic - sync-sepamp horiz-atc, osc drive q14 2sc1360anc transistor video out q17 2sc828ar transistor vert. sync. amp q18 2sc828ar transistor horiz. sync. amp q44 2sc940-1 transistor horiz. out d31 tvsioei diode boost. up d43a tvsbb4a diode damper d43b tvsbb4a, diode damper d44 i tvsbb10 diode rectifier d47 tvssir20 diode rectifier d48 i tvsiod4 diode rectifier , d49a tvsbb2a .diode boost. up d49b tvsbb2a diode boost. up d51 tvsbb4a i diode rectifier l141 tlt047-999 coil peaking coil l403 tlh80716 coil horiz. width coil l404 tlh80608 coil horiz.lin. coil 1405 tlp408 coil choke coil ia06 tlli80904 coil dramic focus coil l430 tlh80410 trans horiz. drive trans r445 tlp408 coil choke coil t40l tlf80838 trans fly back trans c143 eckdihlo2kb2 ceramic 1,00opf 50v i c145 ecealjslod electorolytic 10ilf 63v c16l ecealcslo0 electorolytic 10ilf l6v c302 ecqm05l03jz polyester o.olilf 50v i c303 ecqm05472jz polyester 4,700pf 50v c304 ecsz35efr33v tantal o.331l f 35v c305 ecsz16ef4r7n tantal 4.71lf l6v c3o.6 ecsz16ef4r7n tantal 4.71lf l6v 5 - 12 free datasheet http://www.0pdf.com parts list (cont'o) tr-12dg9f .l 0 c. part no . part name & description remarks c307 ecealcsioo electrolytic io~f ibv c308 eceaojs330 electrolytic 33~f 6.3v- cj09 ecealcs221 electrolytic 220~f 16v c310 ecealaslo2 electrolytic i, ooo~f loy c3ll ecqm05333jz polyester o.033~f 50v c3l2 ecealcs471 polyester 470~f ibv c407 ecqm05183jz polyester o.oi8~f 50v c402 ecqm05l53jz polyester o.oi5~f 50v c403 ecqm05333jz polyester o.033~f 50v c404 eceales4r7 electrolytic 4.7~f 25v c405 ecqsl392jwt styrol 3900~f loov c406 ecqm05l52jz polyester 1500~f 50v . c423 ecea1cs331 electrolytic 330~f 16v c430 ecqm05l53jz polyester 0.015~f 50v c44l eckd2h222kb2 ceramic 2200~f 500v c442 ecqm6682kz. polyester . 6800~f 600v c443 ecqm6682kz polyester 6800~f 600v c444 ecea25w8r5z electrolytic 8.5~ 25v c445 ecea50viooy electrolytic ioo~f 50v c460 ecqe12223kz polyester 0.022~ 1.2k\ c46l ecealjslol electrolytic loo~f 63v c463 ecea350vl electrolytic l~f 350v c465 ecea350vr47 electrolytic 0.471lf 350v c466 bcqe6104kz polyester o .iilf 600v c468 eckd3a152kb9. . ceramic 1,500pf lkv c491 ecealcsi02 electrolytic 1,0oo~f l6v c602 eckd2hi02kb2 ceramic i,ooopf 500' c705 ecealcs222 electrolytic 2,200~f l6v i i r143 erd25tj470 carbon 47q 1/4w r144 erd25tj390 carbon 39q 1/4w rl51 erg2anj821 metal oxide 820q 2w rl6lb erd25tj390 carbon 39q 1/4w r170 erd25tji03 carbon loq 1/4w r171 erd25tj103 carbon 10q 1/4w r172 erd25tj562 carbon 5.6kq 1/4w 5 -13 free datasheet http://www.0pdf.com parts list (cont'd) tr-12dg9f .l 0 c. part no. part name & description remarks r175 erd25tj682 carbon, 6.8kq 1/4w r176 erd25tj182 carbon 1.8kq 1/4w- r177 erd25tjioj carbon lokq 1/4w r30l erd25tj392 carbon 3.9kq 1/4w r302 erd2stj683 carbon 68kq 1/4w r303 erd2sfj6r8 carbon 6.8q 1/4w r304 erd2sfjiri carbon 1.lq 1/4w r305 erd25tj125 carbon 120kq 1/4w r306 erd25fj2r2 carbon 2.2q 1/4w r307 erd25tj4r7 carbon 4.7q 1/4w r401 erd25tj3.33 carbon 3.3kq 1/4w r402 erd25tj56~ carbon 5.6kq 1/4w r403 erd25tj273 carbon 27kq 1/4w r404 i erd25tg2201 carbon 2.2kq 1/4w - ,.. r423 erd25fj680 carbon 68q 1/4w . r432 trf2sjioo non flame loq 2w r44l erd25fj6r8 carbon 6.8q 1/4w r442 trf2skr47 non flame o.47q 2w r443 erd25fj122 carbon 1.2kq 1/2w r444 erd25tj122 carbon 1.2kq 1/2w r460 erd25fji02 carbon lkq 1/4w r46l erd25fj6r8 carbon 6.8q 1/4w r465 erd25tj334 carbon 330kq 1/4w r466 erd25tj683 carbon 68kq 1/4w r468 erd25tjlo5 carbon imq 1/4w r472 erc12gji04 solid lookq 1/2w r474 erd25tj224 carbon 220kq 1/4w r475 erd25tjios carbon imq 1/4wi r601 erd12fj681 carbon 680q 1/2w r602 erd25fjlo3 carbon lokq 1/4w r605 erd25fji03 carbon lokq 1/4w r606 erd25fji03 carbon lokq 1/4w r701 erd25fj5r6 carbon s.6q 1/4w 5 - 14 free datasheet http://www.0pdf.com parts list (cont'o) "tr-12dg9f "l ~c. part no. part name & description remarks controls - vr31 evtvouaoob 15 vert. hold lookq b vr32 evtvouaoob54 vert. height 50kq b vr33 evtvouaoob14 vert. lin lokq b vr4l evtvouaoob13 horiz. hold lmq b vr64 evmj6uiokb26 focus 2mq b vr67 evtvouaoob25 bright 200kq b other parts 26 tjc305-l fuse holder 27 tjs25640y crt socket - tmk81516 ' crt cover tmm81434 push revet 28 xbaif20nu14 fuse 2a" i - i i 5 - 15 free datasheet http://www.0pdf.com 6. floppy disk drive 6.1 minifloppy disk drive ? refer to jk874 minifroppy diskette storage drive service manual (2120497 0110*). ? refer to jk.875 service manual (262d497 0157*). 6.2 standard floppy disk drive ? refer to jk880 diskette storage drive maintenance manual (2560497 0106*). ? refer to jk.885 double sided diskette storage drive service manual (2560497 0125*). 6-1 free datasheet http://www.0pdf.com 7. contro,- pcb 7.1 outllne this board is composed of lsis and ics for controlling the keyboard, floppy disk drives, crt display and com- munication interface. they are also controlled by micro- processor 808sa-2. the memory is composed of a programmable rom and a dynamic ram. 7.2 circuit diagram r----------------, i :i: i i ~ i i i r-------------1 i i ~ i ~ i i lo;llo. i .; 1 i ~~ i e i omi i ~ i i ~a:_ i ~ i i l__ -------------i i w i i t~~ i i :; 9~ffi i i . ...o~ i ~ i 'u ~ i i i i i ~-------------.., i i .... m .... - n ~ 1 i i i i ~ i i i l _____________ -l_ i i i i 1 ~ i i g n / ..... -+1 ---''\.1 i t:: u ~ a: i: :i: ~ u i i ~ 1- i ul i l ____________ l_ fig. 7 - 1 .:: i ~ i o ----- 0 a: o 1 i i i i i i i i i i i i ~ ___ .j ~ : ...-.--=-..., i i/l--.i\ '" i 1;l i i ___ j ...j o a: f- z 8 ~ o :; 7 - 1 7.3 memory map address hex 0000 hex 7fff hex eooo hex e7ff hex fooo. dynamic ram 32k bytes dynamic ram 24k bytes ram 2k bytes usable prom 2k bytes r------------- ------ hex ffff prom 2k bytes fig. 7 - 2 i } use as crt buffer memory } option free datasheet http://www.0pdf.com 7.4 description of lsi operation as to the following lsi, please refer to the service manual no.2. (ic. lsi catalog) 8085a-2 8257 8275 cpu programmable dma controller programmable crt controller 8251 programmable communication interface mb8866 (fd 1791 ) floppy disk formatter/c'ontroller 4116 family 16.384 x 1 bit dynamic ram jd700m/800m series adopts the column 4116-3 2716 16k (2kx8) uv erasable prom 7-2 free datasheet http://www.0pdf.com 7.5 description of operation 7.5.1 circuit diagram 1n (cpu circuit) (1) switching of clock rate 8hh~ -----r- ........ r\._.,....---........ 80ssa-2 >--_----4 x t x2 74.00 fig. 73 the clock input frequency of 8085a-2 can be switch- ed between 8mhz and 4mhz with the short pin of j31. when j31 is shorted: 8mhz clock input when j31 is open: 4mhz clock input the nand gate (7400) connected to terminal x2 of 8085a-2 is for compensation of clock duty cycle in the interior of 8085a-2. (2) clock to peripheral lsls 8'085 a clod< out fig. 7 4 a cpu synchronizing clock of 2mhz is output to the cpu's peripheral lsls (dma controller 8257, programmable communication interface 8251, fdd controller 8866) regardless of the cpu clock rate. 7-3 (3) generation of *iom, *memr, *memw, *ior" *iow ls257 8085a-2 f-----*i1ehr 1----- * hehw 1-----*low i0!h 1--+-+-+--+------ 10m 1-1--+-+------- ale fig. 75 ? control of 10m the impedance level of the 10m becomes high by signal aem output from dma controller 8257 at the occasion of dma, and control of the memory and i/o is transferred to the dma controller. ? generation of *memr, *memw, *ior, *iow *memr, *memw, *ior, *iow are generated with ls257 by wr, rd 101m of 8085a. at the occasion of dma, the impedance level of these signals becomes high by signal aen output from the dma controller, and switching is made to *memr, *memw, *ior, *iow output by the dma control- ler. aen 10m wr 0 0 0 0 0 1 0 1 0 0 1 1 1 x x 0: logic 0 1: logic 1 rd 1 0 1 0 x "mema *memw1'ioa .iow 1 0 1 1 .memw 0 1 1 1 .mema 1 1 1 0 .iow 1 1 0 1 .ioa z z z z x: no definition z: high impedance tab. 7 1 in practice, these signals are of high impedance level with 8085a-2 at the time when signal aem is output. free datasheet http://www.0pdf.com (4) address line control under cpu control 4en a8 a? aid all aiz al3 ai4 ais ale. af>o af>1 a9z a >3 al4. a)5 af>6 af)'t ls244 ~" i i a 1'( 2a zr 'a ~ ==r~a81-1 4'1' sa sf i ca 6'1' 7a 7y 8a ?y rc gz ls373 g '-.: oc if) iq 20 2q 1 3d 4m 3q 4el 4q sf:) 5q 6& 6q 79 'tq gd 8g fig. 7 - 6 ab8 asq abio m!ii a812 abf3 a814 a815 abo asi ab2 ab3 a84 ass ab6 ab'7 the information of a8 - a15 is output to ab8 - ab15 as it is. as address and information is output out of ado - ad7, they are latched with signal ale and information is output out of ab8 - ab15 as address information. the impedance level of abo - ab15 becomes high by signal aen output at the occasion of dma. (5) address control at the occasion of direct memory access atlo mji ai)2 mb a\4. a9s ~ f>f)'1 +hehr *ior ;+mehw -4 !o~, hotd !-io!f)a ~hclk ~eset aen i i i 01 ! i i i i i : i i 8257 do ao i ::-1 ai i ! 112 a2 ! ~ a3' tl4 a4: ds a5: f)6 a6' 97 a"\ ~ehr lor mei1w i, i row hrq i hq9a , leu< , i ii'esot" .~tn a~ i i ls3'73 ~ , i cc " i i- i) iq ~2d .2q '--- 39 3q 49 4q 5" .sll 6ei 6g '!tl '!q sf> s9 fig. 7 - 7 abo asi a82 ab3 a84 ab5 ab6 a8'7 ass ab'! abio abh abi2 a813 abi4 abis when the mode changes to dma mode, signal aen is output, more significant address a8 - a15 are out- put to do - d7 of dma controller 8257, more significant addresses are latched to 15373 by the sub- sequently output adstb, and ab8 - ab15 are output. furthermore, less significant addresses are output to ao - a 7 of 8257, and addresses abo -- ab15 become complete. the address data of the cpu is kept at high impedance level by signal aen at this occasion as described earlier. (6) power clear c71 o.01jl fig. 7 - 8 a circuit protecting abnormal write to floppy disk drive in case of power on, off or interruption. 7-4 when tr2 base voltage drops from (a) point to o.6v (vbe) approximately, tr2 turns to active working to further lower base voltage of tr2. consequently, c3 is promtly discharged and (a) point recomes low level, then comparator output (*pcln) turns to low level. 5vpow~0 supply 4.4v ? power supply ~2v v~ltage.tr2vbe ! ~,.... ~"-o.8v __ _ _----...." i i (ai point 3.5v , i: : ----./: i i .pcln it i i i i ~ controller write gate : active -------------~i~------ i magnetic disk ~ write gate fig. 7 - 9 i ~ free datasheet http://www.0pdf.com 7,5.2 ci rcuit diagram 2n (dynamic ram control) (1) generation of signals to refre~ controller 3242 51 _~r--.. so ----,--~l---' )-or----- j?efrq (dun,. clk -..:::==t::::t::t;:~-t-------k -+clk )---+---k'oweh ale aflstb -+- __ -+ __ ---+_+---.l holda -+-~=---..., .><>---+--+----------' c*~~~ --=----q-'- "'l-inta fig. 7 - 10 refresh of the dynamic ram is made by t4 of operation code fetch cycle m 1 and also by halt at occasions other than dma. ? is detection of operation code' fetch cycle m 1, ? is detection of operation code fetch cycle m 1 ,and @ is detection of halt at occasions other than dma. at the occasion of dma, refresh of the dynamic ram is inhibited by output signals holda and adstb. clk count (2) generation of *ram, *cas, *we to dynamic ram ,h~~r *hehiij hlllelc!) ifeao:l il'8aciq ;if-mcic3 holga -+---l-...i asls 1\814. --+-----------.......; fig. 7 - 11 *weo -l4we / "'-iiie2 *we3 under cpu control, a *ras signal is output about 60msec after a *memr or *memw signal is output, by the function of the delay circuit constituted by r14 and c4. a *cas signal is output about 160msec later by the function of the delay circuit constituted by r16 and c5. the *cas signal is decoded with ls139 by address data signals abl4 and abt5, and the ""cas is output only to the applicable address of the memory. dynamic ram write enable signals *weo -- 3 are output at the timing same as that of *memw only at the occasion of memory write. . at the occasion of dma, *ras signal is produced by response output signals *dacko -- 3 from dma controller 8257, and a *cas signal is output about 160nsec after output of *memr or *memw. the dynamic ram control signals for the above are shown in the following pages. _---,,. sons delay : 'ras ___ n.- 160ns del~~----" :y r-- \ ~------.,.....-- 'cas f-- fetch ----+- i-refresh-j mem read (writei /0 read ----i (writei fig. 7 - 12 at the occation of cpu, dinamic ram refresh timing 7-5 free datasheet http://www.0pdf.com clk ale ------------ ______________ ~tl_ holdr~ 'dack 0 - 3 aen fig. 7 13 at the occation of dma, dinamic ram refresh timing (3) send interrupt control of serial communication interface 8251 -+ i (3) motor control signal of floppy disk controller * iorw ? unit fo ~at j0800m) control pcl jg~4qm lsi j0850m mb8866 j26 (mb8876) roy 3 0 rot t--------'~i (at j0700m ) ~_~:....j 2 jo740m +6v -+5v cl 13 ~-----------~------ mtr fig. 7 - 19 unit ~ ______________________ ~n~ ____ ~~ ______________ __ (14e-11) (15a-8) mtr roy ( at jd700u) j0740u approx. 1.1 sec approx. 2.2 sec fig.7 20 ? mtr signal (motor starting signal) is held for approx. 2.2 seconds after fmal input/output instruction to control lsi (mb8866). (4) rd/wt timing of floppy disk controller 1) rd/wt timing by cpu cs------. ao,a1 : 450nl :. 670ns ::ncn: re ___ -.ioi-j,.l,limil\.l.n-til..._m_in_~\min i i we-------, fig. 721 7-8 ? roy signal (disk ready signal) is generated as output approx. 1.1 seconds after the first input/output in- struction to control lsi (mb8866). (motor revolu- tion of .floppy disk becomes normal after approx . . 1 second.) 2) rd/wt timing on dma transfer aenn dackon -----., ao,a1 1.51ls i i ? i ~50nll 1/ls re----"""'"---; we--------1 fig. 722 i ., free datasheet http://www.0pdf.com 7.s.4 schematics sn (crt control) (1) 748163 (16c) operation +5v da db dc do clr et ep ----ick sl63 ac (2) synchronous signal generation +5v h sync i---..... s163-00 (3) attribute data latch 8275 i ck flgt 10 1q lten 20 20 vsp 30 30 rvv 40 40 40 cl ~ ';. +5v fig. 7 - 28 ? attribute code is latched by 1 character clock delay. (4) displayed data latch ? timing chart is shown below. (fig. 7 - 30, 7 - 31) 8257 15.9744 s163-00 mhz 1 1 cco ao do a ck s/l cc1 cc2 a1 h ~.- 01 b a2 cc3 a3 02 c cc4 a4 cc5 a5 mcm 03 0 74165 cc6 a6 66740 04 e lco 66760 rso 66770 05 f lc1 lc2 lc3 rs1 66780 06 g rs2 clk rs3 isl2716k) ~h inh nr sin b fig. 7 - 29 ? displayed data is latched at 74165 by 1 character clock delay. ? timing chart is shown below. (fig. 7 - 30, 7 - 31) timing chart of attribute data s163-qc (16c-12) 8275 character clock 5163-00 (16c11) ls175-clock attribute data (140 output) attribute output x x data 1 data 2 data 3 1140 output) ____ .jx~ ____________ __'x~ ___ _ timing chart of display data latch dot clock 15.9744 mhz s163- q o 116c-11) 8275-cco-cc6 mcm66740 output data 1 data 2 fig. 7 - 30 timing chart of attribute data 74165 latch tiiming timing chart of display data latch fig.7-31 7 - 10 free datasheet http://www.0pdf.com (5) generation of video signal 15.9744 mhz----~--------~~--~ ~~----~ ~d---------------~ s163- ..... w a b d .....a ..... i i 10 en en , t<...,' , ~ tsv t.,5v micro h()(-,,_,,:~()t a b -..j ..... d ~ e f g (1-i/fjaost8 i i i l---l----i~---i-- i 1 i i (\-iii) w,'lltf>is (1-5'%) hlda --~ k!jweiv (j-if) >- wacrt:ta (/-18) t5v i 1 1 1 i (/-u)* inta (df)1tm~i1jej. i ~ )t k~so (3-411) (i sf) "* mft1w ~ (i-iie)~dacj(o u-iie)~)act<1 ci-ttfhu)aci(2 (h ie) itpaci(~ -_it we\ (3-""') - __ ;(-we2. ("-8a) --- __ , -'it- we~ (3-1c1i\) i + ---~ ~ qas 0 i j -fa! ~ 'it 015 i (j vi) f=-i~: i> * ells 2 (3 8.'\) [-~----i_-ot c)ls.:1 (3101\) i l _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ s -;- - - (1-ioihi\/)i5 >--------------- --- ------------------+-+-~-~-ip'-szo : rom acid (1-id8)a81. >----------------------- - 6 (1-ioejjl81 3 >- _____________ 6l- ll-lo6)11812 :> i ..r (/-tf) -'*~eset>--- ls7f ~ \jqn~ ~ i i i i i i --+-- ------1----- - - i i '------j (i-iid)-ttj\b/l >---------- (1-lob),'illll )>---------- i i i lsoo ~~i -~o/!. i dec.oj~r i i i i i i ,1 l~{)or(2 i ~_6_ -1! f~~~ -li-- i_~ nel 1 ii 10 ii r-------- i ep rom i~v i i b i lli"& 27/6 i i 8 vlrrvic-~_ iiluc),,180 :> i -- - 0 t)o - ~--.-- .-~-- 1- (,-,oc)aoi :> i .. _- ~ --~~/ 0/ '/0 -.- -..2..)\2 [)2/ 1 (l-/oc)ab2 :> i s i/~ i (i-,oc)a6~ ;:: _ ~1.. ~17g ~,/". r- ('-loc)il84- ;- j a~ u$ ,-~ "i (,-,oclll~ ('-locmtl6 '" i 21~6 d61/6 i /1"7 d7 1 / 7 (1-/ocii\b? "/ 1 23 jl8 t (/-i~)ii88 ;::- i 22m cf~ i (j-/~mb9 '" i (,-/gi'l)ablo /9 10 ~~ i i ~ i i ,jr , i t-sv <;) i "l dbo (1-100) d81 (1-100) dbz 11-100) da,3 (1-100) d64 (1-100) das (i- 100) db6 (1-100) c d87 (1-100) i ~ i i ,- - -----* i 21 i i 4- "~,,. rc~ _l.l --- i i _~~/ ()/ /01 i i --~a2 ()z iii i ---.t1'l3 i)~:l1 i 1..1\4- 1-#-1 i i --==-=-'-3 ,i!11h: ,!i - i .---,-z 6 d6 'b 1 i 1 / 7 1j7 j? i i it a8 i i i a9 ce ~-- i 1;9 10 o! ~ i i i d i i i 1 i i __ /?. ___ d e l - - - - - - - - - - -1- ~ - --- - - - _-j ~ 1: ress f --------- ----- . ------- - - ---- - --------- -- - ------ ----------------------- ------- 2/7 free datasheet http://www.0pdf.com a 6 l -..j d u1 e f g tl2v ~5v ~------~~~~~--~~~ -5v -sv c.h~c68 c/l~c20 g-nd -sv -12 v t---- --;.,-;; 4-'l0a ~60 ~30n c/7 .3~v (hii)refrq ala) cllunt (2-$c) ro'w'fn )>-------------- r- i ~.:;v i t:~~~ ;==-== f,~~~1~~~ ~:::f~~bt c/-loc)ab6 (hoc)ab~ __ --.----.jfi.i ~:~~g:t >r-=--=====t=~.''j l:i~~g: i >>- ___ --1...---#1 11-..,.1"".,2 >----t- li-iilfja813 i i i i /4- i l _ _ _.~ refresh ~ countet ... l() pc \low) *ra$o >------- ['z--uj "c,o\so ~ -------- (nl) if cas (z-"4-~jlt weo , __ !!~~ we" . -- - - k4//6-' - . .ao ~ ~6l{1 as pi h+f-h ,. dtl ~i6lt~ - - 31 11\0 mf 1~ g~/~ t at rs~~:-lr-==--- ~i 8cf!ji ~-- --- a.s 'i. .+h++t~a6 ~ - - oooo~3fff --- i\r~~ r-+- "", 8 d f (iidl!j dbo (i 100) [) 1:1 1 (1-ioo)dl:il 11-11)0)d8 ~ (i-.oo)db4 (1-iod)()b5 (i ioo)d6 b (i iod}o b '7 ___ .4-+.-.!.l.i (/-8 f):#- aen >-+----'~---., ci-ii,}#l>iictc..o j>'!------!~--..,:.'"""1"--:-::_:::_--jf---.i---+-:~ (~-7f1#ijnit 1 ("jlf)~ un i t z (df)" 1 n~ *~e.sfl>--+-.-i-<~- -----h (4-2c) (a-la) i.irintt-ddo >--l....ld .... ~~---'-..aj [ci-aojaa8 - ! (4-i~a9>----'-i----~ i (i.-~,rt>---+-- i (4-/o)ih~w i~ ibm i i lsjl. g i i>6u8i.e" - - filtet- off/on ff l side b/ \ f-f __________ sinsle -4 f.t- i \ imi-h ~-+-+--='" h .(s-ic) jo ii ~~-~i--1=~_j~~~~~~~~~~~~~~~~~~~-~_'j~ _r-----'-(,-i-l)-=- ... tkiici< 00 (l~41/ indf.>< / sectijr 0(/ 9 <11 ... wk,a pkorrct <43> hard window (~'~nef'~tor ~~==~~~~~~~~~~~~~~~~~~~-----'-'~*~~~~~~~~~?)j-~~--"~-i----- __ ljl-1 , , , \.. (lz> 1<' keavy a - b u ...... 01 ...... 1 ei i f g i i ..1 1 ____ ~ __ --.1_ .. if 10 1 ii i i horilontcai j7;~1 : ~'jn('_ c.r-cu,~-_ hv qr-lo-c-.!/(\.'"-~~~"'--"" i u s~ 1 ~--~~----~ 1 _________ _ ~----~i- ------ usc -t~-v t~y i ------------- 1- -- - - - - - --- - - - - --.- -- .- ~ i ill) q i p+ l_ - (6 -lof)i ..... 00 \.' i i {'oi "1::,. r:l"'\y ~ fllfl.>t : lnterruf'~~~ 1)0 f\v jtke-sft>--- -- (f-/c)cz /f){j-bf i i ) i l7-lc)t)(rdt i a i ,----, (7-ic) t)(r{)'(2 8 ('1-ic-) txro'(.3 () (6-u,) -,t unitoz e (7-?h) nme!? p f (/-,!jl{) rese t l=-~ __ _ (4-38)* do? ) g h i- i timer i i l i i , i (i 1011);188 :: (/ioaj/1a9 ~~ ______ _ u-lod)/\810 r l i r-j i (i-ioij)ab1's 1 i i ~i ~i , i bu2~er i circuit l ___ _ 060 1 ('-iof? obi - --082 _--1'----1- _____ db '7 r, i 1 --------==- rr i.-i j -[ ~i~t - ~c.;1et 1 70 hi t-5v - ls/38 .- i i , i i (lnjt8 (l-ifl) , *ulvltq (4-1{f-) , i i i --1 1 i i i i .i --, i i i )cps aj)st; u? ft;- (/o>k.8i)to ji>1<8dtl lt~---------c:j; ..., ...... (1) ., .. 6 ii 9 10 , t/z" cd3 ~ 'ph ? <1.5 > ? 17 > ,- - - - - - - - - - - 1 a intet'hjpt resuest i ,i; ~~m (8) cd (ef) xrsr6~ (b-4a) 't,sv lsos i q....<",1s i -'~--l' lsd5 12 <;;113 ~ lso:s ~. i i i 1 _. j ,,---------- 1/ i"? i'l> l ? 20) i i 1 ~ i ? .3) :, ? 6) i 1--. 7) l3_l~j :r10;;- ii i i> iiiiii11 ~~i t :r9 5 --~ ~~k 2 ) ~- ~~. ? ~20> -iii,' 1;;:'1 -' : ~ 1 ~ t - - - - - - - - ~ '8' . ? ~.3 > !il)jt h> ~~~*- ----1,-.1<6> l 1 tlzr :.3 i 2 i .3 :ii < 7 > (1.-28) txrvy2 ...... i i i' ~1~ '-; :1-i l i 2,j,. ~-. ~ i > (b-2a>tx'ro'1'1 ~ i i -" j/z ,~ ~:~ ?s/~o col i< ~ lb-2c) t)(r()y3 r5v i 't - - - f- - - - - - - --... a< 1'/.$) ( i _1.s.!.:~o i _~_ts 1 i,a f~j..i s()z'..e io ~>-- 15 i , i~ ltf i i is v' 1 t r- f-- 1 '~'i txkvr a 20 15 10 1(' 5 b 1 c 4 ? 74u361 i if ~ 5t ii 74uoo i - ... ai qs t!74ls02 i at 74uo. i 5 6 7 o -~qq:~!t~ 01' -ny'- u ~ "q3 a63 ~ 162 u~ 1.1 'rrl 20m 10m r --. ~if t!74ls1071 st ii 74,53,31 o e ? cl9 ? ... r64i1 f ... ---.-- e22 g h ... j --tl.--,. (20 --1.1---"'1:.1 .r---l c23ut~ k l i ywp-b ~ ....-:::-;:-:-) "'u~tl. ~ ~ ~ 1~ __________ '_2_s_7 ____ ~ c: 2lj . i at 74uu'istlt' un. i,ott' un. 18tt' 1(4116 lott 5tlt' un6 iis*t,r--1(-4-1i-.--'i~*t.r- -1(-4-,,-.--'15*.'''--.-''-''-.--' 0* ~. " 1(4". ti .... "a 15*~' ..... l13*t' ..... l5*t' ..... ii!*t' ..... !* ' .. ,,0.1 ttl ""'0 1 ~. ~ ,.no1 5* ti '"'''' s*lt ui1. 111 5 *t'''--1(-4-11-.--'19*t u"6 ig*t"'-, -i(-"-"-.~~ * === ::: ~ i~ ii' --- 121 tlr--74-l-s1-3-'1 ~* ?? u n6 iis* t u". 13* t"- -1(-4-1-16--'1 s* t"'- -1(-4-11-.-" s * ? 74l10. i 8* ? 74uo41 -f ii 741120 i !* .,-_7_4l_i_3_73_~ i i :... i 13 __h'_ s*;.' u116 13*t ui1. i!*t 1(4116 i~*t 1(411. u ... ~.:;: ~ 112 .mt=j r u -.i'n-- 3~' ..... 11!*t''--1(-4-11-6--'i~tt' 1(4116 13*t 1(4116 ~ 74u05 i e*~' ui16 ~~:;:t ui16 ig*t u116 i~*t et ? 74uooi ~ e*- 74ln .... 1(4116 i~ * ? 74uu' i 9 wn;) 10~ 11~~ ... la!=~s ~r--7-s-1-s4--'1 e* ~~ __ '_2_s_1 __ --'i i l hhh (51 u 13~ it (52 u ... (2' ... ~'--7-s-u-4--'1 e* ~~ __ '_2_5_i __ --, tlr-- 7 - s - u - 4 --'1 ~ * ~l.. __ '_2_5 _i __ --' -u- el6 (17 --t.t--- ... -sv [j-.mi-- is' --- 160 '" i e ~ ? l..i __ '_2_7_5 ____ --' : : ;diio : :;dii r _ .d12 ,_4 :::du n 0- o ut14 ? 74lsi61 t! 741.5 ;f:f~.1 r 7 ?? u t _.1 =t u ..... .... u 15 i! 74u041 ~cdi aso 16 ... ii 74u161 b c .-- __ -,0 _ dvli i ~*. 7411u (d2 ~l. t u t ? 0'2 x m 17w ii 75154 i . ii 74lsi61 o 0 1 8 1di p9 ~ ~?:i_;j7 1 h2o 0 jlo j16 j17 1,..- ____ ~!.i_i- - - - - ..,13 i i m~-------------""'25 id2 o "0 dtl2 lr - - - - - - - - - - - - - -,13 i 14l. - - - - - - - - - - - - - ~s ... u ... sd3 i i o ,~ __________ ..... j '7 5 1 vidio lr - - - -~'!~ -- - - - - ,13 i i 14l. - - - - - - - - - - - - - ..... 25 ... _ 9.02 it c. 137 ___ 131 --- sbcyl 2742-2 mos ic ~ uj. 2 t 3 8 i "' .. ~.1 tit 18 ...... ~ n (i) ~ < w i ." (") ol (") o 3: ""0 o z m z .... .- o (") > ::! o z free datasheet http://www.0pdf.com 7.6.3 sbcv3parts list sbcv3 (1/10) l oc. part no. part name & description re-marks 2a m54552p lsi 4a m74ls368p ic 8a m7.4ls74p " 9a sn7sis0p " loa sn7s1s0p " lla sn7s1s0p " 12a sn7s1s0p " 13a sn7sis0p " 14a m7~ls161p " lsa m74ls04p " - 4b sn7407n " sb m14ls02p " 8b m74lsoop " 9b m74lsi07p " lib sn7sis4n " 12b sn7s154n " 13b sn7s1s4n -" 15b m74ls393p " 16b dv18 " 2c m74ls04p " 4c m74lsoop " 5c m74ls08p " 6c m74ls74p " 7c m74ls74p " 9c m74ls393p " llc mpd8251c lsi i2c- mpd825ic " 13c mpd8251c " lsc m74ls161p ic 16c sn74s163n " i7c sn751s4n " 2d sn74lsi38n " i 4d- sn74lsi38n " 6d m74lsi39p " i 9d m74lsosp " 14d m74ls17sp " lsd m74ls74p " i 16d m74ls74p " i 17d m74ls161p " 2e m5k4116p-3 lsi option for 64kb 721 free datasheet http://www.0pdf.com sbcv3 (2/10) .l 0 c. part no. part name & description remarks 3e m5k4116p-3 lsi option for 64kb 4e m5k4116p-3 " " 5e m5k4116p-3 " " 6e m5k4116p-3 ii " 7e m5k4116p-3 " " 8e m5.k4116p-3 " " 9e m5k4116p-3 " " 12e d3242 ic 14e sn74165n " 15e sn74125n " 16e m74ls08p " 17e sn7407n " 2f m5k4116p-3 lsi 3f :m5k4116p-'3 " 4f m5k4116p-3 " 5f m5k4116p-3 " 6f i m5k4116p-3 if 7f m5k4116p-3 " 8f m5k4116p-3 " 9f m5k4116p-3 " 15f sn74s74n ic 16f m74ls04p " 2g m5k4116p-3 lsi 3g m5k4116p-3 " 4g m5k4116p-3 " 5g m5k4116p-3 " 6g m5k4116p-3 " 7g . m5k4116p-3 " 8g m5k4116p-3 " 9g m5k4116p-3 " 12g m5l2716k2 lsi for jd700m 12g m5l2716k102 " i for jd740m .. 12g m5l2716k42 " for jd800m 12g m5l2716k142 " for jd840m 13g p8275 " 14g mcm66740l " ascii 14g mcm66760p " british 14g mcm66770p " german 14g mcm66780p " i french 15g m74ls32p ic 7 - 22 ......... free datasheet http://www.0pdf.com sbcv3 (3/10) l oe. part no. part name & description remarks 2h m5k4116p-3 lsi - 3h m5k4116p-3 " 4h m5k4116p-3 " i 5h m5k4116p-3 " 6h m5k4116p-3 " 7h m5k4116p-3 " 8h m5k4116p-3 " 9h m5k4116p-3 " 1j m74ls74p ie 2j m74ls02p " - 3j m74ls05p " 4j m74ls04p " 6j m74ls08p " 7j i m74lsoop' " 8j m74lsoop " 9j i m74ls139p " 12j m5l8226p lsi 13j mb8866c " 14j m74ls32p ie 15j m74ls74p " for jd740m/jd840m 16j sn7438n " 18j m74lsoop " for jd740m/jd840m lk m74ls107p " 2k m74ls32p " 4k m74ls1op " 6k m74ls04p " 8k m74ls74p " 9k m74ls02p " 12k m5l8226p lsi 14k m74lsobp ie 15k m74lsobp " 16k sn7438n " i 18k sn7438n " for jd740m/jdb40m 2l m5l8257p lsi 4l m74ls04p ie 6l m74ls20p " bl sn7400n " 10l p80b5a-2 lsi 12l sn74367an ie 13l m74ls04p " 723 free datasheet http://www.0pdf.com sbcv3 (4/10). l oc. part no. part name & description remarks 14l m74ls32p ic 15l m74ls259p " for jd740m/jd840m lol m74ls74p " for jd740m/jd840m 18l m74ls157p " 4m m74ls373p " bm m74ls373p " 8m m74ls244p " 12m sn74367an " 13m m74ls51p " for jd740m/jd840m 14m m74ls74p " 15m- m74ls04p " for jd740m/jd840m 16m m74ls32p " for jd740m/jd840m ~7m m74ls193p " 8n m51202l " 12n m74i...s257p " 13n m74ls04p " for jd740m/jd840m- 14n m74ls74p ." for jd7 40m/ jd840m . 15n m74ls74p " 16n fc-9602pc " 17n m74ls74p " 18n fc-9602pc " rl erd25tj472 carbon 4.7kq 1/4w r2 _ erd25tj221 " 220q 1/4w r3 erd25tj563 " 56kq 1/4w r4 erd25tj561 " 560q 1/4w r5 erd25tj563 " 56kq 1/4w r6 erd25tj223 " 22kq 1/4w r7 erd25tjl22 " 1.2kq 1/4w r8 erd25tj561 i " 560q 1/4w r9 erd25tj474 " 470kq 1/4w i rio erd25tj471 " 47q 1/4w rii erd25tj471 " 47q 1/4w r12 erd25tjl22 " 1.2kq 1/4w r13 erd25tj222 " 2.2kq 1/4w rl4 erd25tj151 " 150q 1/4w i r15 erd25tj221 " 220q 1/4w rl6 erd25tj222 " 2.2kq 1/4w r17 erd25tjl22 " 1.2kq 1/4w 7 - 24 free datasheet http://www.0pdf.com sbcv3 (5/10) l oc. part no. part name & description remarks rl8 erd25tjl22 carbon 1.2kq 1/4w r19 erd2stj122 " 1.2kq 1/4w - r20 erd2stj122 " 1.2kq 1/4w r21 erd2stjl22 " 1.2kq 1/4w r22 erd2stj122 " 1.2kq 1/4w r23 erd2stj122 " 1.2kq 1/4w r24 erd2stj122 " 1.2kq 1/4w r2s erd2stj122 " 1.2kq 1/4w r26 erd2stj122 " 1.2kq 1/4w r27 erd2stji03 " lokq 1/4w - r28 erd2stj103 " lokq 1/4w r29 erd2stj472 " 4.7kq 1/4w r30 erd2stji03 " lokq 1/4w r31 erd2stjls1. " lsoq 1/4w r32 erd2stj1s1 " lsoq 1/4w r33 i erd2stj1s1 " is0q 1/4w r34 erd2stj183 " 18kq 1/4w r3s erd2stj393 " 39kq 1/4w i r36 erd25tj333 ti 33kq 1/4w r37 erd2stj273 " 27kq 1/4w r38 erd2stj273 ii 27kq 1/4w r39 erd2stjls1 ii lsoq 1/4w r40 erd2stj122 " 1.2kq 1/4w r41 erd2stji03 " lokq 1/4w . r42 erd2stj472 " 4.7kq 1/4w r43 erd2stj821 " 820q 1/4w r44 erd2stj271 " 270q 1/4w r4s erd2stjioo " looq 1/4w r46 erd2stj181 " 180q 1/4w r47 erd2stj391 " 390q 1/4w r48 erd2stj122 " 1.2kq 1/4w r49 erd2stj682 " 6.8kq 1/4w i rso erd2stj682 " 6.8kq 1/4w rsi erd2stj682 " 6.8kq 1/4w rs2 erd2stj220 " 22q 1/4w r53 erd2stj220 " 22q 1/4w - r54 erd25tj220 " 22q 1/4w rs5 erd2stj220 " 22q 1/4w rs6 erd25tj220 " 22q 1/4w r57 erd2stj220 " 22q 1/4w 725 free datasheet http://www.0pdf.com sbcv3 (6/10) .l 0 c. part no. part name & description remarks r58 erd25tj220 carbon 22q 1/4w r59 erd25tj471 " 470q 1/4w - r60 erd25tj331 " 330q 1/4w r61 erd25tj222 " 2.2kq 1/4w r62 erd25tj472 " 4.7kq 1/4w r63 erd25tj393 " 39kq 1/4w r64 erd25tj561 " 560q 1/4w r65 erd25tj472 " 4.7kq 1/4w r66 erd25tj221 " 220q 1/4w - cl eckdihi03 zfz ceramic o.ol~f 25v c2 ecebics220 electrolytic 22~f 16v c3 825001410' ceramic o.l~f 12v dd600-bci04m12v c4 eckdih471mb " 470pf c5 eckd2hi02kb " l',ooopf c6 egebicsioo electrolytic 10~f 16v c7 ecsziovh220 tantalum 220~f loy i c8 ecsziovhioo " 100~f loy c9 eccdih220kc ceramic 22pf cio 825001410 ceramic o.l~f 12v dd600-bci04m12v cll 825001410 " o.l~f 12v " c12 ecebicsioo electrolytic 10~f 16v c14 eckd2hi02kb ceramic 1,000pf c15 eckd2hi02kb " 1,ooopf c16 825001410 " o.l~f 12v dd600-bci04m12v c17 ecebics330 electrolytic 33~f 16v ." c18 ecqmih153kz ceramic 0.015~f c19 ecebicsioo electrolytic 10~f 16v c20 ecebicsioo " 10~f 16v c21 ecebihs4r7 " 4.7~f 50v c22 ecebihs4r7 " 4.7~f 50v i c23 ecebihs4r7 " 4.7~f 50v c24 ecebihs4r7 " 4.7~ 50v c25 ecebihs4r7 " 4.7~f 50v c26 ecebihs4r7 " 4.7~f 50v c27 ecebicsioo " 10~f 16v c28 ecebicsioo " 10~f 16v c29 ecebicsioo " 10~f 16v c30 ecebicsioo " lo~f 16v 7 - 26 free datasheet http://www.0pdf.com sbcv3 (7/10) l oc. part no. part name & description remarks c31 eceb1cs100 electro 1ytic 10~f 16v c32 eceb1cs100 " 10~f 16v - c33 eceb1cs100 " 10~f 16v c34 eceb1cs100 " 10~f 16v c35 829918063 ceramic o.l~f 50v rpel12fl04z50v c36 829918063 " o.lf.l.f 50v " c37 829918063 " o.lf.l.f 50v " c38 829918063 " o.l~f 50v " c39 829918063 " o.l~f 50v " c40 829918063 " o.l~f 50v " c41 -829918063 " o.l~f 50v " c42 829918063 " o.l~f 50v " 9 43 829918063 " o.lf.l.f 50v " c44 829918063' " o.lf.l.f 50v " c45 829918063 " o.l~f 50v " c46 i 829918063 " n.1~f 50v " c47 829918063 " o.l~f 50v " c48 829918063 " o.lf.l.f 50v i " c49 829918063 " o.lf.l.f 50v " c50 829918063 " o.l~f 50v " c51 829918063 " o.l~f 50v i " c52 829918063 " o.l~f 50v " c53 825001410 " o.l~f 12v dd600-bc104m12v c54 825001410 " o.lf.l.f 12v " c55 825001410 " o.lf.l.f 12v " c56 825001410 " o.lf.l.f 12v " c57 825001410 " o.lf.l.f 12v " c58 825001410 " o.lf.l.f 12v " c59 825001410 " o.lf.l.f 12v " c60 825001410 " o.lf.l.f 12v " c61 825001410 i " 0 .. 1 f.l.f 12v " c62 825001410 " 0.1f.l.f 12v i " c63 825001410 " o.lf.l.f 12v " c64 825001410 . " o.lf.l.f 12v " c65 825001410 " o.lf.l.f 12v " c66 825001410 i " 0.1f.l.f 12v i " c67 825001410 " 0.1f.l.f 12v i " c68 .825001410 " 0.1f.l.f 12v " c69 829918063 " o.l~f 50v i rpel12fl04z50v c70 829918063 'i o.l~f 50v " 7 - 27 free datasheet http://www.0pdf.com sbcv3 (8/10) -l 0 c. part no. part name & description remarks c71 829918063 ceramic' o.l~f 50v rpel12fi04z50v c72 825001410 " o.l~f 12v- dd600-bci04m12v c73 825001410 " o.l~f 12v i " c74 825001410 " o.l~f 12v " c75 825001410 " o.l~f 12v " c76 825001410 " o.l~f 12v " c77 825001410 " o.l~f 12v " c79 825001410 " o.l~f 12v " c80 825001410 " o.l~f 12v " c81 825001410 " o.l~f 12v " - c8} 825001410 " o.l~f 12v " c84 825001410 " o.l~f 12v " c85 825001410 " o.l~f 12v i " , c86 825001410 " o.l~f 12v " c88 825001410 " o.l~f 12v " c89 i 825001410 " o.l~f 12v " c90 825001410 " o.l~f 12v " c91 825001410 " o.l~f 12v ,. c93 825001410 i " o.l~f 12v " c94 825001410 " o.l~f 12v " c95 825001410 " o.l~f 12v " c97 825001410 " o.l~f 12v " c98 825001410 " o.l~f 12v " c99 825001410 " o.l~f 12v " ci01 825001410 " o.l~f 12v " ci04 825001410 " 0.1~ 12v " ci05 825001410 " o.l~f 12v " c106 825001410 " o.l~f 12v " c107 eckd1h681kb2 " 680pf c108 eckd1h471mb " 470pf ci09 825001410 " o.l~f 12v dd600-bc104m12v clio 825001410 " o.l~f 12v i " cl11 825001410 " o.l~f 12v " cl14 825001410 - " o.l~f 12v " c116 825001410 " o.l~f 12v " cl17 825001410 " o.lij.f 12v " cl18 825001410 " o.l~f 12v i " c121 825001410 " o.l~f 12v " c122 825001410 " o.l~f 12v " c123 825001410 " o.lij.f 12v " 7 - 28 free datasheet http://www.0pdf.com sbcv3 (9/10) l 0 c. part no. part name & description remarks c124 825001410 - ceramic, o.l~f 12v dd600-bci04mi2v c126 825001410 " o.i~f l2v " c127 825001410 " o.i~f 12v i " jl 969926050 short pin z-152-l6p j2 969926050 " " j3 969926050 " " j5 969926053 " z-149-3p j6 969926053 " " - ji0 969926053 " " j12 969926053 " " j13 969926057 " z-152-6p j14 1969926057" " " jls 969926057 " " j16 969926048 " z-152-2p j17 969926048 " ' " j20 969926053 " i z-149-3p - j26 969926053 " " j31 969926048 " z-ls2-2p j40 969926053 " z-149-3p j4l 969926053 " " j44 969926048 " z-152-2p j46 969926053 " z-149-3p j47 969926053 " " j48 969926048 " z-ls2-2p 919926190 short plug z-128 ql 2sc828a-r transister 1 q2 2sas64a-r " q3 2sa720-s " q4 2sc828a-r " q5 2sa720-s " dl ma162 diode 729 free datasheet http://www.0pdf.com sbcv3 (10/10) .l 0 c. part no. part name & description remarks bz eaf14r06c buzzer' vrl 849916017 variable resistor 10kq pn822hi03h 212d40301250 crystal 15. 9744mhz p3 '" p21 tm-027 check pin except, ps, 6, 8, 14 16, 18 19 20 12g dl2-24a. socket 14g dl2-24a " ufp-03a-02#2 conne<;tor dtel '" 3 919023625 hous.ing dbc-25s-fo 919904002 i guide d20418-j2 030-50659 pin 030-50660 pin 015-0350-000 bracket kb ff-20-002 connector dcps 919951189 connector 1-380999-0 video pcn6b5p25dsg connector i 730 r ~ - free datasheet http://www.0pdf.com a 8 c -..j w ~ d e g c 50 \ .... w (\) ai bi <:1 ll e f g h 6 ii 10 dram controller (ras cas generator) ---------------------------------------- nrw d-ie) i 1 i i i 11-54'>50 ... (1-56)5 i 't ---lq count (3 - ie) 1 i i - - ---- - - --- -------- --- --i 1- ep -rom +~ i 1 i 1 i ~ 2716 1 i q vfp ~ li. .1 abo ~ ad "00 1/0 .1 i ab' i -7, ai 01 ill .1 "bl ...5 az f)l ,~ i a 1)3 i a3 ()3 /' i (i roc ) ab4 ' -1 at loa ~ i j 1 ab5 t .z a5 05 1 r r , abb ., a(' fl(. i i 1 i wait{?ij(i-ib) i ab' 1 .1 a1 -d'i i i i i i ~ - ;- 1 1 i ~(, rowen h-it.') i {.~ 1 ~as . l/g , _1. ~~. i (i-ida) ab'! . a~ ce r:::ii i ~ j ~., ,sjz : ailio -: "i~ "'~ "'~ , .~ '" i --. ~soo ,~! l'ji/ i 't5v ' z j4f) ii 13fj~ ~.f~c13' nd i i s l5;{x) lsio j; kc/ i ? i l'.i04"l i (>/eh inta l -'- d "e' '"'" ". .ka'o " aa) i ,"" ~ j (hjf)~i'f~i .~ l'ion 4j~ ~ i .~- ~jlj i . '---"-fcj ~iia 0-58.# f1ehw 1 ~ ~v fi'j4 ts~t:f)ftcj f ~h r /1._ : -ka~/(~-)5i\j ~:~ ~l/l i ~ r/3 i ..s. a3 {)~ ita 1 ~~; j ls3l ~ -+w i 1- a4 ita {)4./: i j (\-ie)>fu\ci a b c i) e f 3 i 4 i. 6 8 \i 10 inverted fuller ~1idij:iii~ __ ----*lofil (4-if)(6---ia)(s-14)(h') .... 00 1/'-~)(2-u) fd cont roller i ----8816-: ,~~l4-- __ -ti~~ i ~ \)bo dbi (/100) {)b~ ~~ __________________________________ -l ____________________________________ ~~ __ ~~d -{)b3 --- . ifj' ) .t '-i w (j'i a 8 l il f i fl g 3 6 8 '. 10 11 osc video clock divider horizontcll sync ci rcwt t~ 15. '1~h4 r5v 5v rioh l.s1b/l i ~ 1 .=it:;t";i li '" tsv eti' ~ :4 ~ la t.so+ i 0 kv.t" fl s y"il pr 9 !l~'u, i:tv , t"5v j 19~~a:~(~ $1 1 i i .~ 4f v idw (to ckt) .--- lj i ~------!.!." .;ill .z i lsd4 _ _____ ...j l _______ _ , t=--------- - : ,,~ 1 ------- .. -----1 ,~ i i"bq 1,1 vert iccl i sy nc c . ' =,,~ ""'" i i i (e'-/of) i w en i i i i interrupt control tor txrdy i timer a (i-bf ).*' kl ~t i hi 1-------- (7- i( )1\~1 'l 1~,i------------r+_9, b ('1-1() 1/i '-i w ~ ? 6 8 9 10 11 , pi! cd3 ~ tl:l.1j ai ilit('~r~p~ ~o!. _ r!fq!_ o---+~: i: ~; ~ 0---+----4. < 1'7 > '--- ....... -------1----.(. < 8 > cp(cf) h:st65k~ lso!i (6-ha) >-~ dte 3 se>( ba) (no_3 port) er(col rs ?a) ~---++++-iiii ~iiiiii--.-----f i - ] ii cs (( b) rd(bb) pr(cc) s~ (ab) fe! (aa) 1 fbv i > l505 lit.:. ~ 1 bik'':lfs-.~t1.'j ~ 'i if) '- ls04 ~~ c [) e f g h ~ i _.1 dte ( 1iiiilti ,:;: ! fz (~~:#., "'''' l- ,f-, 15) 1 x ruy l -------t -t=_= (t, iali xrvr 1 .----t---- rs (<.a) es(e8) ------------ ------------- rv(bb) /' " dr ( (c ) /' port.3 controller port i controller '3ci( ab) 1111004 f/f(aa) (f)(cf) (bll) lxklj)" j 7s150 /' i : sd;m) dte2 { dbo ----t- - 0:1< (ev) (nu_./: fvkr dbl (i-ioij) g~~----r--++-'~~~-----!..1 ks (ca) dt4 i nb5 db6 cs (cb) (6 '/l) -;tljnfpi,--+--------!.!q (i-ioc) abo "3> rd ,00) d-5f-);1: i or>---+---+---~ '- 1-5f)'* low ,,<- > elr (cc) (1 ')6>re~ <: 8> lp ?f) (i ')uj hclk <17> kt (00) (i-1(;4)aeq>--- (6 '7fhunlfb :.) id$"> st (p8) (6 '/1 > 't utjit 7' ______ _ < 7 > ':'a (ab) < i > ~ (aa) ----- ----- (zz>ci 0"3 .1 4 p/3 sds i """ i i 11 'kclk(6-iof) ~ r-=------------- - ----------- -~-~ls04-l i i i i i i i i +5v i i i i i .... i 4mhz.,.c- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ________________ ii (4-56-) timerp(6-1f) boud rote clock generator <23> 50s(ch) ii ~ ,,- ~f_, " i i , r--n. iw i :h{)flq i (65b) i i i (, t--rl~~;f( i f_ l4 i i v" i (6-r,/j) i i l ______ _ 7/8 free datasheet http://www.0pdf.com (,j 00 b c ii e f g 6 :>oi:s!sl db i o d82 o db3 db4 db 5 db6 db '7 -dte-t <14> ~ w co ~ .. ---------~ ;;.1 f g h "wdd c2' k cn l cn m c24 n i _ ~ 't~e ch +v.!.!!- -+ --+ -+ -+ " j u c1i i~ __ .. 7 ~ '!"!!!.j ~ ~ ...,..,,--,,.,,,..::::::;:::::; a ~~g c de!: 6 at~~t~ .. ::!; i ywp-i i ~t~mt' uh6- a i9tt' 1t4116-ii!tt' 1[411.-1 1 ? i 2 di 161 i." i. ~ ~u7 1 !*~ 0 ct ~ i ~e~t'ul1.-ii!~t'411.-ii~~t' i[4116-iio~2 ~ __ -- .. i oil?- 8271 u _ +. 1.2 " 0 "1 3 izq u::: === .. , ii ui1.-113tt' uh6- a i5tt' .4116-alat.' 1[411.-11 ~ + 3 .. +jv ? . t .. 4 5t "74li041 ii 74luu is+~ ~ 5 t ~ j et.ui1.-115~t'ul1.-al!~t'ul1.-ai3~t'.4116-al s~ 4 , i 27'. u7 5 ~tu vi' i~ (i'~4 i.. --- .t' ul1.-altt' i[411.-ai3tt' .4116-a. at.' i[411.-al 5 .~~:j4 ~... : ct 6 , ii' ~ ii 74luu i!t ii 74luu "muo l ~::t a,; 74[u'31 ~- ttl ul1.-al~~t' i[411.-al!~t' .411.-a,i:::t' i[4116-al u::: 2 +. 7~ . ~ i i=5:;:.~;;;;~j!*.' .... -,18*.' .... -,,31.' " .. -'i "t 7 et,1 un ~ a,; 741.7 11 ii 74lu44 "74liiu i ii 74l104 1 et 2242 i hhhllul1.-a,~~t'ui1.-a,a~t'.411.-a'!~.'uii6-al :::c ' 112 ? r. " i 74l1741! --- ? ta" 74lmll "74l1'~. i st :.- ;~:i:~ -i: "74l100 i :t ii 74li04 1 is t::h~ ::11= :.- ;4:~s-i-i- -- - j- ~4~~;4-1-: ':":.ii..:~ if .. -- --.' , ... h.h "'2~ __ ? i_ : 51. 9 .. ::1. t9 _-----, ~ j56 t1. ~ 271. t10l _____ _ i 74lii07 1 tt 1 ill 74l1011: ~~ :1'74l1021: "74l104 i s f ~nnhnst r 1226 ir;~. 74l1041:~~ 10 j 101,.-2 f'!:~f'" :.. . , 1 huh!! -~--=::~-:-------':rtt!sv . . -- 0 ,.----. t::r 0 ... --..... 141". .- .. r.] ~rl 271. i ju o : "t~.74li071 . o yt~ aa '" 74l10. 1 ~ ~ ii 74l1393 ? ...j ag ? (ilo 1 'm .,. - .. "" ... ~ - - .. .. c:::!j 17 "eln' ~._c_~."'i.:' ___ , ''"t::::3'" 12m -- ~- ~r--." j54 1-:-- ~ : .--. n'lsl : ___ . m 0 ~ j40' jd -w .-:'~: ~: --;:;:-;--, --.".,.,- ... . . ... ..7. ~. i ~ "t i~ m::~j' __ it ~~ ___ "_* __ ~_7_4~1_0_0_1! i 74l174 i ~* ~ lit ~ 74l174 i: ; c2 + r~2q .~ .. nt!"----' i"ig - t:t qi ih .--. ? ~ 'pl7' n g ~ ~ 0; -- .--. :---------k-...:a"'"""' ? 74u02 1 :~ a,; 74[s107' u n (i 1m 74u04 1 yt. 74l10. i " 74uoi i ~!t. 74lu2 i ? 74u74 i ~ y t 110 ~ it ~ ;; j47 ~j2. 141 --wv- 111;:;:;: ~ .. a . o .,------, u 1. ~t al) ? 74li04 i m ii 74l110 i ? 74lu21 ~ y*. 74l174 i a15 -- c5 i. ... ~ ~ 74u7 4 1 ~::; ? 74l1041 /r,x ci + 1:16 c6 124 +sv ~ c'29 it 11 12 13 ~1. ~ lui t14 al. ___ ---.-!'14 ii 74l1001 et ~ it! 74uo.1 et ~ i 74u041 f.-7~:,-o-0-'-g-*-.-~~;;-11 ~s~!!t~ s 14 46 u"21 i ---.,- - + 1 n .... xxaak_j c4 it 14s . double .... - - - - tr - ? + us" cllj .!.!!- ~ ~ - -- - ----- ~ ? ~:u ,.j;!~ ~ ~ "., 1 5 t .m"'l .'~' ?? ' eu m"'1 ~ .. " :ri-~:';-il ~ ',' n. ~t 15 u viyddhit ! _~ : : u9 ~1. ~ lui t15 j2 'xxxaaa_ i ii 74liosi st ii 74u021 ii . r- itsiie a 0 p4 pj s + ~+ = :j+ +iv ~ 10m ~ - - - - - - - - - --7 - 8211 ... t ~ 1 - .... i - .ut 16 ii 74lu21 ~ ut a.m ~ ~ at ~ ~ st .. 74li041 ~~ _7~~~a~ -' ___ ?? 74l1041 : u* +!: :r-" sv abc .ill.. d e 147l..-- .1. g ::::::::hd+sv j ~::;k l t tt m : n :jr c::::j i .. vlttcp tit -;:v' ~ do- in s ? :douiu :" ~ 0... ..;:.... .._. ~ r- -----. .. ih = i i ~ ~ ,,1. rn ct.. ~ ~1.1.]l;i ut ~o : 2 4 ? : 1241 ~'u 'dd ut" 74[1244 i,. 74lu59 i, 17 17 t::;: "t;:;: . ____________ ? i ? ~-----j.9-l------------~l-----~-----~ ~ ________ ; no ji2 ft. rl.llz. "10 j. l~~ id:'~ j1i "7 ~ ! ' . - - - - ?? - - - - - - - - - - - - - - - -,,-) - - - - - - -,- - - - - - , .12 .1li. .1.ll..l.lljlll lj 0 )-u'o 0)...'-'., 0 '--- --- ---~ ~ '''1. 18 cj c::::j ~~ m id:l .--. ___ '--'.!:- 'd~ )...l~ " .. video ._~_ ~ _ ~_~ a 51cv4 2746-1 mos ie ? iu ~ 74u245 i~h 18 j7 '2-1- ~ d lsi' i.- d eda dcpi dtl4 c====:1 i' ------ ~!.i.! - ~_ - -.)2 , __ - - ___ !?!! ~ ____ .,~ i. _____ .... !~ ~ _____ ,i~ 1i~ -1- - - - - - - - - - - - - - -" _\l~~ ? i. i i i i ? k.. ______________ !2s t( ______________ ~25 14~ ______________ ~2s m~ ___________________ ~so l iki ,~ - - -- - - -- -~. , . 9 .. __ .. ______ ~,s ~ '-i m in en oj o < ~ i -g o oj o o 3: "'0 o z m z -i .- o o ? ::! o z free datasheet http://www.0pdf.com 7.6.6 sbcv4 parts list sbcv4 (1/10) loc. part no. part name & description remarks 10a m5l2716k142 lsi ipl 12a m74ls368p ic 13a m74lsoop ic 14a mpd8251c lsi 15 a mpd8251c lsi 16a mpd8251c lsi 17 a i sn75154n ic 12b sn7407n ic 13b m74ls08p ie 17b sn75150p ic 6c m74ls161p ic 8c m74ls161p ic 9c m74ls74p ic 10c m74lsi07p ic 11 c m74ls74p ic ! 12c m74ls74p ic 13c m74ls393p ic 16c m74ls32p ic 17c sn75150p ic 18c sn75150p ic 2d m5l8257p-5 ic dmac 4d m74ls04p ic i 6d m74ls257p ic 80 sn74367an ic 100 p8085a-2 ic cpu 11 d m74lsoop ic 12d m74ls02p ic 13d m74ls04p ic 14d m74lsoop i-c 15 d m74ls05p ic 160 sn75154n ic 170 sn75154n ic 4e m74ls373p ic 6e m74ls373p ic 8e m 74ls244p ic 11 e sn74367an ic 12e m74lsi07p i ic 13 e m74ls10p ic 14e m74ls32p ic 15 e m74ls02p ic 16e sn75150p ic 17e sn75150p ic if sn74s163n ic 2f m74ls74p ic 4f m74ls74p ic i 6f m74ls20p ic 8f m74ls138p ic 7 -40 free datasheet http://www.0pdf.com sbcv4 (2/10) lac. part no. part name & description remarks 9f m74ls138p ie 11f m51202l ie 13 f m74ls32p ie 15f m74ls74p ie 16f sn75154n ie 1g dv 18 ie ose 4g sn74165n ie 6g m74ls161p ie 8g m74ls04p ic 9g m74ls139p ic log m74ls08p ie 11 g m74ls32p ie 12g m74ls04p ie 13g sn74s74n ic 14g m74ls08p ie 15g sn7407n ie 2h p8275 lsi crtc - 4h m5l2716ka lsi c'g ascii m5l2716ke lsi c'g british m5l2716kd lsi e'g germ an m5l2716kf lsi e'g french 6h m74ls393p ic 8h mc3242ap lsi 9h m74ls175p ie 10h m74ls02p ie 11 h m74lsoop ie 12h m74ls08p ie 13h m74ls74p ic 14h sn74125n ic 15h m74ls32p ic 16h m74ls14p ic 61 m74ls175p ie 91 m74lsoop ie i 101 m74ls04p ie 111 m74ls74p ic 12j m74ls08p ic 13j m74ls157p ic 14j m74ls04p ie 151 m74lsoop ie i 161 m53238p ie 1k m5k4116p-3 lsi dram 2k m5k4116p-3 lsi dram 3k m5k4116p-3 lsi dram 4k m5k4116p-3 lsi i dram 5k m5k4116p-3 lsi dram 6k msk4116p-3 lsi dram 7k m5k4116p-3 lsi dram 7 - 41 free datasheet http://www.0pdf.com sbcv4 (3/10) l 0 c. part no. part name & description remarks 8k m5k4116p-3 lsi 9k m74ls04p ic 11 k mb8876c ls i fdc 12k m74ls32p ic 13 k m74ls74p ic 14k m74lsoop ic 15k m74ls08p ic 16 k m53238p ic 1l m5k4116p-3 lsi dram 2l msk4116p-3 lsi dram 3l msk4116p-3 lsi dram 4l msk4116p-3 lsi dram 5l m5k4116p-3 lsi dram 6l msk4116p-3 lsi dram 7l m5k4116p-3 lsi dram 8l m5k4116p-3 lsi dram 12l m74ls32p ic 14l ms3238p ic 15 l m5l8212p lsi 16 l m74ls04p ic 1m m5k4116p-3 lsi dram 2m m 5 k 4116p-3 lsi dram 3m m5k4116p-3 lsi dram 4m m5k4116p-3 lsi dram 5m m5k4116p-3 lsi dram 6m m5k4116p-3 ls i dram 7m m5k4116p-3 lsi dram 8m m 5 k 4116p-3 ls i dram 9m m74ls51p ic 10m m5l8226p lsi 11 m m5l8226p lsi 12m m74ls74p ic 13m m74ls04p ic 14m fc-9602pc ic 15m m74ls74p ic 16m m74ls32p ic 17m m74ls244p ic dram ~ in msk4116p-3 lsi dram 2n m5k4116p-3 lsi dram 3n m5k4116p-3 lsi dram 4n m5k4116p-3 lsi dram 5n m5k4116p-3 lsi dram 6n m 5k 4116 p-3 lsi dram 7n m 5 k 4116p-3 lsi dram 8n m5k4116p-3 lsi dram 9n m74ls74p ic ion m74ls04p ic 11 n m74ls74p ic 12n m74ls74p ie 7 - 42 free datasheet http://www.0pdf.com sbcv4 (4/10) loc. part no. part name & description remarks 13n m74ls193p ic 14n fc-9602pc ic 16n m74ls04p ic 17n m74ls259p ic 18n sn74ls245n ic r2 erd25tj221 carbon 200n 1/4w r3 erd25tj563 carbon 56kn 1/4w r4 erd25tj561 carbon 560n 1/4w r5 erd25tj563 carbon 56kn 1/4w r6 erd25tj223 carbon 22kn 1/4w r7 erd25tj122 carbon 1.2kn 1/4w r8 erd25tj561 carbon 560n 1/4 w i r9 erd25tj474 carbon 470kn 1/4 w i rio erd25tj471 carbon 470n 1/4w r 11 erd25tj471 carbon 470n 1/4w r 12 erd25tj122 carb on 1.2kn 1/4 w r 13 erd25tj222 carbon 2.2kn 1/4w r14 erd25tj151 carbon 150n 1/4 w r 15 erd25tj221 carbon 220n 1/4w r 16 erd25tj222 carbon 2.2kn 1/4w r 1 7 erd25tj122 carbon 1.2kn 1/4 w r18 erd25tj122 carbon 1.2kn 1/4w r 19 erd25tj122 carbon 1.2kn 1/4w r20 erd25tj122 carbon 1.2kn 1/,4w r 21 erd25tj122 carbon 1.2kn 1/4w r 22 erd25tj122 carbon 1.2kn 1/4w r23 erd25tj122 carbon 1.2kn 1/4 w r24 erd25tj122 carbon 1.2kn 1/4 w r25 erd25tj122 carbon 1.2kn 1/4w r 26 erd25tj122 carbon 1.2kn 1/4w r 27 erd25tj103 carbon 10kn 1/4w r 28 erd25tj103 c arb a n 10kn 1/4w r29 erd25tj472 carb on 47kn 1/4w r30 erd25tj103 carbon 10kn 1/4 w r 31 erd25tj152 ' carbon 15 on 1/4w r32 erd25tj152 carbon 150n 1/4w r 33 erd25tj151 carbon 15 on 1/4w r34 erd25tj183 carbon 18kn 1/4 w r35 erd25tj393 carbon 39kn 1/4w r36 erd25tj333 carbon 33kn 1/4 w r 37 erd25tj273 carbon 27kn 1/4w r38 erd25tj273 carbon 27kn 1/4w r39 erd25tj151 carbon 150n 1/4w r40 erd25tj122 carbon 1.2kn 1/4 w r41 erd25tji03 carbon 10kn 1/4w r42 erd25tj472 carbon 4.7kn 1/4w 7 -43 free datasheet http://www.0pdf.com sbcv4 (5/10) loc. part no. part name & description remarks r45 erd25tji00 c arb on ion 1/4w r46 erd25tj181 carbon 180n 1/4 w r47 erd25tj391 carbon 390n 1/4 w r48 erd25tj122 carbon 12kn 1/4w r49 erd25tj682 carbon 6.8kn 1/4w r50 erd25tj682 carbon 6.8k11 1/4 w r51 erd25tj682 carbon 6.8kn 1/4w r52 erd25tj220 carbon 2211 1/4 w r53 erd25tj220 carbon 22n 1/4w r54 erd25tj220 carbon 22n 1/4 w r55 erd25tj220 carbon 22n 1/4w r56 erd25tj220 carbon 22n 1/4 w r 5 7 erd25tj220 carbon 22n 1/4w r58 erd25tj220 carbon 2211 1/4w r59 erd25tj471 carbon 470n 1/4 w r60 erd25tj331 carbon 330n 1/4w r61 i erd25tj222 carbon 2.2k11 1/4w r62 erd25tj472 carbon 4.7kn 1/4 w r63 erd25tj393 carbon 39kn 1/4 w r64 erd25tj561 carbon 560n 1/4 w r65 erd25tj472 carbon 4.7kn 1/4w .. r69 erd25tj221 carbon 220n 1/4w r70 erd25tj472 carbon 4.7kn 1/4 w r71 erd25tj332 carbon 3.3k 1/4 w r 72 erd25tj332 carbon 3.3k 1/4 w r 73 erd25tj332 carbon 3.3k 1/4w r74 erd25tj221 carbon 220n 1/4 w c1 eck d1h103zfz ceram ic o.ol,uf 25v c2 eceb1cs220 electrolytic 22,uf 16v c3 825001410 ceram ic o.l/olf 12v dd600-bci04mi2v c4 eck d1h471mb ceram ic 470pf c5 eck d 2h 102kb ceram ic 1000pf c6 eceb1cs100 electrolytic 10/olf 16v c7 ecsz10vh220 tantalum 220#-'f 10v c8 ecsz10vh100 tan talum 100/olf 10v ci0 825001410 ceram ic o.i,uf 12v dd600-bci04mi2v c14 eck d2hi0~kb ceramic 1000pf c1s eck d2h102kb caramic 1000pf 7 -44 free datasheet http://www.0pdf.com sbcv4 (6/10) loc. part no. part name & description remarks c16 825001410 ceramic o.l",f 12v dd600-bc104m12v c17 bceb1cs330 electrolytic 33",f 16v c18 ecqm1h153kz myler 0.015",f c19 eceb1cs100 e ie c tr 0 ly tic 10",f 16v c20 eceb1cs100 electrolytic 10",f 16v c21 eceb1hs4r7 electrolytic 4.7 ",f sov c22 eceb1hs4r7 electrolytic 4.7 ",f sov c23 eceb1hs4r7 electrolytic 4.7 ",f sov c24 eceb1hs4r7 electrolytic 4.7 ",f sov c25 ecebihs4r7 electrolytic 4.7 ",f 50v c26 ecebihs4r7 e ie c tro ly tic 4.7 ",f sov c27 eceb1cs100 electrolytic 10",f 16v c28 eceb1cs100 electrolytic 10",f 16v c29 eceb1cs100 electrolytic 10j,&f 16v c30 eceb1cs100 electrolytic 10",f 16v c 31 eceb1cs100 electrolytic 10",f 16v c32 eceb1cs100 electrolytic 10",f 16v c33 eceb1cs100 electrolytic 10",f 16v c34 eceb1cs100 electrolytic 10",f 16v c3s 829918063 ceram ic o.l,uf sov pre112f104zs0v c36 829918063 c eram ic 0.1 ",f sov .. c37 829918063 ceram ic 0.1 ",f sov " c38 829918063 ceramic 0.1 ",f sov .. c39 829918063 ceram ic o.l",f sov .. c40 829918063 ceram ic 0.1 ",f sov .. c41 329918063 ceramic o.l",f sov .. c42 829918063 i ceram ic 0.1 ",f sov .. c43 829918063 ceramic 0.1 ",f sov " c44 829918063 ceram ic 0.1 ",f sov .. c4s 829918063 ceram ic o.l",f sov " c46 829918063 ceramic o.l",f sov .. c47 829918063 ceramic o.l",f sov .. c48 829918063 ceram ic o.l",f 50v .. c49 829918063 ceram ic 0.1 ",f sov .. cso 829918063 ceram ic 0.1 ",f sov .. cs2 829918063 ceram ic 0.1 ",f sov pre112f 1 04zs0v cs 3 825001410 ceram ic 0.1 ",f 12v dd600-dc1 04m 12v cs4 825001410 ceram ic o.l",f 12v " css 825001410 ceram ic o.l",f 12v " cs6 825001410 c eram ic o.l",f 12v .. cs7 825001410 ceram ic 0.1 ",f 12v .. cs8 825001410 ceram ic 0.1 ",f 12v .. cs9 825001410 ceram ic 0.1 ",f 12v .. c60 825001410 ceramic 0.1 ",f 12v .. c61 825001410 ceram ic 0.1 ",f 12v " c62 825001410 ceramic 0.1 ",f 12v " c63 825001410 ceramic 0.1 ",f 12v .. c64 825001410 ceramic 0.1 ",f 12v " 7-45 free datasheet http://www.0pdf.com sbcv4 (7/10) loc. part no. part name & description remarks c' 825001410 ceram ic o.l~f 12v dd600-bc104m12v c66 825001410 ceram ic o.l~f 12v " c67 825001410 c eram ic o.l~f 12v " c68 8250014140 ceram ic 0.1~f 12v " c69 829918063 ceram ic 0.1 ~f 50v rpel12f104z50v c70 829918063 ceram ic o.l~f 50v " c71 829918063 ceram ic 0.1~f 50v " c72 825001410 ceram ic o.l~f 12v dd600-bc 104m 12v c73 825001410 c eram ic o.l~f 12v " c74 825001410 c eram ic 0.1 ~f 12v " c75 825001410 ceramic o.l~f 12v " c76 825001410 ceram ic o.l~f 12v " c77 825001410 ceram ic o.l~f 12v " c78 825001410 ceram ic o.l~f 12v " c79 825001410 ceram ic 0.1~f 12v " c80 825001410 ceram ic 0.1~f 12v " c81 825001410 ceram ic o.l~f 12v " c82 825001410 ceram ic 0.1 ~f 12v " c83 825001410 c eram ic 0.1 ~f 12v " c84 825001410 ceram ic o.l~f 12v " c85 825001410 g eram ic o.l~f 12v " c86 825001410 ceramic 0.1 ~f 12v " c87. 825001410 ceram ic 0.1~f 12v " c88 825001410 ceram ic 0.1 ~f 12v .. c89 825001410 ceram ic o.l~f 12v " c90 825001410 c eram ic 0.1 ~f 12v " c91 825001410 ceramic o.l~f 12v " c92 825001410 ceram ic 0.1 ~f 12v " c93 825001410 ceram ic o.l~f 12v " c94 825001410 ceram ic o.l~f 12v " c95 825001410 ceram ic o .1~f 12v " c96 825001410 ceram ic o.l~f 12v " c97 825001410 ceram ic o.l~f 12v " c98 825001410 ceram ic o.l~f 12v " c99 825001410 ceramic o.l~f 12v " c100 825001410 ceramic o.l~f 12v " c101 825001410 ceramic o.l~f 12v " c102 825001410 ceram ic o.l~f 12v " c103 825001410 ceram ic o.l~f 12v " c 104 825001410 ceram ic o.l~f 12v " c105 825001410 ceram ic o.l~f 12v " c 1 06 825001410 ceram ic 0.1 ~f 12v " cl07 825001410 ceram ic o.i~f 12v " c108 825001410 ceram ic o.l~f 12v " c109 825001410 ceram ic o.l~f 12v " clio 825001410 ceram ic o.l~f 12v " c111 825001410 ceram ic o.l~f 12v " c112 825001410 ceram ic o.l~f 12v .. c 113 825001410 ceram ic 0.1 ~f 12v " 7 -46 free datasheet http://www.0pdf.com sbcv (8/10) loc. part no. part name & description remarks c 114 825001410 ceramic o.l~f 12v dd600-bc 104m 12v c 115 825001410 ceramic o.i~f 12v .. c 116 825001410 ceram ic o.i~f 12v " c 11 7 82500141.0 c eram ic o.l~f 12v .. c118 825001410 c eram ic o.i~f 12v .. c 119 825001410 ceram ic 0.1 ~f 12v " c120 825001410 ceram ic o.i~f 12v " c121 825001410 ceram ic o.i~f 12v .. c122 825001410 ceram ic o.l~f 12v .. c123 825001410 ceram ic o.l~f 12v " c 124 825001410 ceramic o.l~f 12v .. c 125 825001410 c eram ic o.i~f 12v .. c126 825001410 ceram ic 0.1 ~f 12v .. c 127 825001410 ceramic o.l~f 12v .. c128 eck d2h102kb c eram ic 1000pf c129 eck d2hi02kb c eram ic 1000pf c130 eck d1h471mb ceram ic 470pf c131 eck d1h471mb ceramic 470pf c 13 2 ecc d1h220kc ceramic 22pf q1 2sc828a-r t ran sister q2 2sa564a-r t ran sister q3 2sa 7 20-s transister q4 2sc828a-r t ran sister q5 2sa720-s transister vr1 849916017 variable resister 10kn pn822h103h ir 2 1kn ir 3 1 kn j1 969926050 short pin z-152-16p j2 969926050 short pin z-152-16p j3 969926050 sh ort pin z-152-16p j5 969926053 short pin z-149-3p j6 969926053 sh ort pin z-149-3p ji0 969926053 short pin z-149-3p j12 969926053 short pin z-149-3p j13 969926048 short pin z-149-3p 7 - 47 free datasheet http://www.0pdf.com sbcv4 (9/10) loc. part no. part name & description remarks j14 969926048 sh ort pin z-152-2p j15 969926048 short pin z-152-2p j16 969926048 short pin z-152-2p j17 969926048 short pin z-152-2p j20 969926053 short pin z-149-3p j26 969926053 short pin z-149-3p j40 969926053 short pin z-149-3p j41 969926053 short pin z-149-3p j44 969926048 short pin z-152-2p j46 969926053 short pin z-149-3p j47 969926053 short pin z-149-3p j48 969926048 sh ort pin z-152-2p j54 969926053 short pin z-149-3p j 55 969926053 short pin z-149-3p j 56 969926053 short pin z-149-3p 919926190 short plug z -12 8 d1 ma 162 diode bz eaf14r06c buzzer 212d40301250 cry stal 15.9744mhz d3,4,7,10,11 tm -02 7 check pin 13,17,21 4h dl2-24a socket loa dl2-24a socket pwd u f p -0 3 a 0 2 # 2 connector dtei-3 919023625 housing dbc-25s-fo 919904002 guide d 20418 -j 2 03 -50659 pin 030-50660 pin o 1 5 -0 3 5 0 -0 0 0 bracket kb f f-20-00 2 connector 7 -48 free datasheet http://www.0pdf.com sbcv4 (10/10) loc. part no. part name & description remarks dcps 919951189 connector 1-380999-0 video pcn6b5p25dsg connector i . 7 49 free datasheet http://www.0pdf.com 7.7 dopll pcb (for jo-740m, 840m, 850m~ 7.7.1 o.utline the ddpll pcb is a phase lock loop eonsisting of a: ? phase comparator ? low pass filter ? voltage controlled oscillator (yco). ? v co divider ? window generator the vco phase makes it capable of synchronizing with the incoming read data from the drive. if the phase changes, indicating the read data frequency is changing, the phase comparator and the low pass filter output voltage increases or decreases just enough to ke.ep the oscillator frequency the same as the frequency of the read data, preserving the, synchronized condition. (1) phase comparator the function of the phase comparator is to synchro- nize the vco frequency to the frequency of the read data. (2) low pass filter the low pass filter translate pulsative signal of the phase comparator into dc voltage. (3) voltage controlled oscillator (vco) the vco consists of ic (sn74ls124), etc. the frequency of vco is controlled by dc voltage from low pass filter. (4) vco divider the function of vco divider is to divide a frequency of vco by counter. (5) window generator one oock and one data window is generated for every bit cell. ? timing chart is shown on the next page. 7 - 50 free datasheet http://www.0pdf.com 1-- 4bytes il2 bilsl ------------~ ..... t_c ----. 15 bils ...., ~ n -\ coo c d-t rawoatai5bi21 _l-jl.~r1l--j jl,~ ~ sons 0 (5cioi 500 n. a iph ao en isu21 wr clock ii mhlll5011l lbo i\iiit clk. gtlllo!!1 4cio ("e21 ""c20 (rawotgtli4c71 set phase (5021 ...... ~ a 12081 v (2061 osc 00110111 o wino (6091 rot (6061 pump up (3051 pump oown (3091 cnt\6 (48151 "reao data (6c61 "data wino 16cbi jca (jeg) h gain (poll ii i i i~~'i 12 ? ii -t o " o ~ ~ .1 i i i n ri- ii i "----j n .- .- 1/2 free datasheet http://www.0pdf.com ....,j u1 n h gain 14c 101 se t phase 15021 vin ip61 wi e:uu!:: wi" fulie: wt edge wt eoge ---[f- -~~ gap sync 1,0 i gap i sync i data )1 data ( gap sync 1'0 i gap i sync data _____ fl- n n n~ __ , ---~----~r f"~ 2/2 free datasheet http://www.0pdf.com < i >(50) '-i ~ (4 ) f: rijen(-vfo sync) <8)~ f.tlf/1 t!)v +!)va(i-6b) .. sv pup2(/-2e) 1 __ _ r--- c circuit >----i syn o~2c) rain p i '''i'' p >----j ) i i - ?r) rd o-l (no use" j (i ? , __ . u!ic) (/0 ') --~~=:. ~~(/~2e) ."rq (,,>0, n~ +5v ..... ~ w c... ----() (/6) c '* read data ~ voltage control osc w/f>{o < 12 '; *,couht 16 o 3: c... c .~ ~ 3: c c ~ r- r- ~ :i: m 3: ? -4 g free datasheet http://www.0pdf.com 7.7.4 jo-740m, j0-840m oopll component location i r --..;--~~[ ][ ][ ~[ ]c'::'::j e o i p9 p8 pi p2 wone.-- ____ ---. -di - -i? 74 l 5 0 0 i: sg 0eto ~1~ 1m 2m tp ... __ 7_"_l_s_i_5_7---1 j13\ 1 l_ -, .> 74 ls 93 j --"ivv- r 5 l ~ -h- [jp3~5:: \ c4 ~i 21~ )? 9602 i ~ ~: r~ r- 41-' ci l .jvri i n [ -,1 .1 ~ j3rj -1: i '-it-'cjr4~-"'nw- i .... ..j 1 ". > 74 ,- .. 6 i 1 '>~-7-"-l-s-7-,,--'1 f .2 .... __ 9_6_0_2 __ -' i ::! --"ivv- inri ~ i u rio j4 ~ ~ u c7 i 4lj c6 01 r27 r 5 ~ r9 [ ] p4 sam 4: 1 :; ?r--- 9 - 6 - 0 - z --', i ?r'>-7-"-l-s-i-6-1--', l t? - , ~ '---------1 74ls 175 ii -> : 3 c~ -w"b.s ~ l.::.jc:-=- ____ ~!..~?j c: :jcnti6 go n a: ..- ____ -.u~ ~> 74lso" it,.> ci9 ---"ny- ri 9602 [ ] rolso p5 1'1 0 1'1 u -i ~ rs 74lsoo ~ r29 7"ls04 6 .r-~ -7-4 -3 8----,1 u i j ..... p_7_4_l_s_7_4 __ veo + ~t-- n el4 '"' ~ r24 u i ?2 745124 1 ,..,.cl5 c'16 '-i i-' j81'"lm rf" r 1 el3 .j9~ ,.1-- 07 : i t:jc::: i i [j r~ l_...jvinp6 ~ r20 cio r-i~ n u c9 ell p7 r22 sg[ ] 03 ...... '=:;:= :::[ )~() / "'\ r 21 --"i'iv- ~ "",ri3 =:;:= t!: tr3 ri2 *iii or:: / '" ri5 --"i'iv- --jwv- r31 r25 r26 "-"'ri" ~ tr402 -* .a. ddpl l 2736- c:=':--=-':-=j j ~ c20 2 l 50 l j 7 - 54 free datasheet http://www.0pdf.com 7.7.5 jd-74om. jd-840m. 850m ddpll parts list oopll (1/4) l oc. part no. part name & description remarks 3 b sn74ls74n i c 4 b sn74ls161n 1/ 5 b sn74ls04n 1/ 1 c sn74ls157n " 2 c fc-9602pc " 3 c fc-9602pc " 4 c sn74ls175n " 5 c fc-9602pc " 6 c sn7438n " 1 0 sn74ls93n " 2 0 sn74ls51n " 3 0 sn74ls74n /i 4 0 sn74lsoon " 5 0 sn74ls04n /i 6 0 sn74ls74n " 2 e sn74ls124n /i tri 2sc828a-r transistor tr2 2sc828a-r " tr3 3 sk-49r " tr4 3 sk-49r " d 1 ma-162 diode d 2 ma-162 1/ 0 3 ma-162 /i r 1 erd25t]682 carbon 6.8kn 1/4w r 2 erd25t1333 /i 33kn 1/4w r 3 erd25tj333 1/ 33kn 1/4w 7 - 55 free datasheet http://www.0pdf.com oopll (2/4) l ~c. part no. part name & description remarks r 6 erd25tj471 carbon 470 n 1/4w r 9 er02 5 ckf402 2 meta 1 402kn 1/4w rl1 erd25tj822 carbon 8.2kn 1/4w r12 erd25tj392 " 3.9kn 1/4w r13 erd25tj152 " 1.5i ddpll (4/4) l oc. part no. part name & description remarks p 1.2.4 - 9 tm-027 check pin 7 - 58 free datasheet http://www.0pdf.com 8. assembly general the illustrated part catalog is arranged so that the figures precede the parts lists and will be on the opposit page. the JD-700M/800m series assembly is contained on 13 pages. 8 - 1 free datasheet http://www.0pdf.com /~ 2 " t . d5 \\~o \44 53 46 50 00 :..a c- o ~ 8 3: ~ ~ 3: ~ (i) m s:: cd r -< o ::n ? ~ 2 c) free datasheet http://www.0pdf.com (1/2) 8.2 . JD-700Mn40m main parts list . l oc. part no . part name & description remarks 1 212d161-10274 upper cover 2 212d468-07183 fan net 3 wej55b4 fan 4 256d161-13800 base chassis 5 212d435-01080 main name plate 6 212d435-01570 seal 120v ac " 212d435-01620 seal 220v ac " 212d435-01630 seal 240v ac 7 932006022 fuse holder 100/120v fh-032 " fh-033 fuse holder 220/240v 8 kr-51 code bushing 9 212d343-00451 transformer sbctll 100/120v " 212d343-d0461 transformer sbct21 220/240v 10 1 256d461-11640 blank panel 11 256d46l-l4030 code panel bks07 12 i g26 g:r ommet 13 me-202v ac line filter 14 sbcv3 main circuit board assy 15 256d261-l3790 bottom cover 16 k-8 rubber foot 7028 i 4 pcs/set 17 256d36l-l4040 key board panel 18 sbckbasc key board assy for alphabet type " sbckbgerm key board assy for german type 18 sbckbjis key board assy for jis type 19 key top ooder key top with key no. 20 ck4c208b key switch 21 212d459-00431 b/w monitor tv trl2dg9f 22 212d463-23150 tv blacket 23 212d463-23 160 bracket/2 24 212d463-23 180 psu plate/r 1 25 2l2d463-23190 psu plate/l 26 212d363-23910 mount angle assy 27 jk-874 mini floppy disk drive 2 pcs/set for jd700m " jk-875 mini floppy disk drive 2 pcs/set for jd740m 28 212d268-11470 escutcheon 29 n/a panasonic badge 30 evvbiaf20e52 variable resister 8-3 free datasheet http://www.0pdf.com (2/2) JD-700M/740m main parts list (cont'o) ol oc. part no. part name & description remarks 31 212d435-01610 front name plate JD-700M - " 212d435-01510 front name plate jd-740m i 32 212d463-2390 switch holder 33 212d451-o0111 power supply ehbsc33boitb 34 sde3sb-l main switch loo/120v " sde3sb-e-i main switch 220/240v 35 ddpll i floppy interface board assy for jd740m 36 k8075 knob 37 lcbs-14n plastic holder for jd740m 38 db2r(b) led wi th nut 39 212d468-12040 color , i i 40 i n/a m3x6 screw xsb3+6fc 41 " m3 nylon washer pw3nylon i 42 " m3 nut xng3fx 43 " i m3 spring washer xwa3fx 44 " m3 plane washer xwg3fx 45 " m4x8 screw xyn4+f8fx 46 " m4xlo screw xyn4+fiofx 48 n/a m3x6 screw xyn3+f6fx 49 " m4xl4 screw xyn4+ci4fx 50 " i m4 star washer ywc4c 51 " m3x6 tapping xtn3+6dfx 52 " m3x8 screw xyn3+f8fx 53 " m3 star washer ywc3c 54 kg016 frexible bush 55 kg012 frexible bush 56 dks07 cable clamper i 8-4 free datasheet http://www.0pdf.com 8.3 jd-800m/840m assembly drawing (1/2) \ 85 free datasheet http://www.0pdf.com 00 0) 61 27i~ 26 61 61 42 ...__--56 44 ~ m ~ oj r -< o ::xj ~ z g) n ~ free datasheet http://www.0pdf.com 8.4 jd-800m(840m main parts list .l oe. part no. part name & description remarks 1 256d161-10992 upper cover 2 256dj.61-13800 base chassis - 3 sbcv3 main circui t board assy 4 256d261-13790 bottom cover 5 k-8 rubber foot 7028 4 pcs/set 6 256d461-11640 blank panel 7 212d435-01080 main name plate 8 212d435-01570 seal 120v ac " 212d435-01620 seal 220v ac " 212d435-01630 seal 240v ac 9 932006022 fuse holder 100/120v fh-032 " fh-033 fuse holder 220/240v 10 kr-51 code bushing 11 256d361-14040 key board panel 12 sbckbasc key board assy for alphabet type " sbckgerm key board assy for german type 12 sbckbjis key board assy i for jis type i 13 key top order key top with key no. 14 ck4c208b key switch 15 256d268-11480 escutcheon 16 evvbiaf20e52 variable resister 17 256d435-01590 front name plate jd800m " 256d435-01580 front name plate jd840m 18 n/a panasonic badge 19 212d463-23900 switch holder 20 sde3sb-l main switch 10o/120v " sde3sb-e-l main switch 220/240v 22 gt-205v ac line filter 23 g26 grommet 7126 i 24 dks07 cable clamper 25 256d463-2}290 stay 26 212d459-00431 b/w monitor tv tr12dg9f 27 256d463-23260 blacket/r 28 256d363-23320 foot/r 29 256d363-23310 foot/l 30 256d263-23350 power supply panel 8-7 free datasheet http://www.0pdf.com jd800m/840m main parts list (cont'o) l 0 c. part no. part name & description remarks 31 256d463-23590 angle/3 32 kg016 frexible bush i 33 wej55b4 fan 34 256d363-23330 fan panel 35 256d363-16994 fd angle 36 256d363-16984 fd chassis 37 256d463-23270 fd bracket/l 38 jk880350el floppy disk drive 50hz 2 pes/set for jd800m " jk880360el floppy disk drive 60hz 2 pes/set for jd800m " jk885sd50b floppy disk drive 50hz 2 pes/set for jd840m " jk885sd60b floppy disk drive 60hz 2 pes/set for jd840m 39 256d463-20800 fd mat 40 256d463-2)240 fd upper panel 41 256d463-23300 tv angle 42 i 256d363-21820 fd back panel 43 256d463-23280 angle 44 ehbsc34boltb power supply 45 256d343-00471 i transformer sbct31 100/120v " 256d343-00481 trans former sbct41 220/240v 47 f126-5p terminal 48 ddpll floppy interface board a~sy for jd840m 49 lcbs-04n plastic holder for jd840m 50 k8075 knob 51 db2r(b) led with nut 52 212d468-12040 color 53 n/a m3x6 screw xsb3+6fc 54 " m3 nylon washer pw3nylon i 55 " m3 plane washer xwe3fx 56 " m3x6 screw xyn3+f6fx 58 n/a m4xl4 screw xyn4+f14fx 59 " m3 star washer ywc3c 61 n/a m4x8 screw xyn4f8fx 8-8 free datasheet http://www.0pdf.com jd800m/840 main parts list (cont'o) .l 0 c. part no. part name & description remarks 62 n/a m4 star 'washer ywc4c 63 " m3 nut xng3fc 64 " m3 spring washer xwa3fc 65 " m3x8 screw xyn3+f8fx 67 n/a m3x6 tapping xtn3+6dfx 68 " m3x30 screw xsn3+30fc 70 n/a m3x14 screw xyn3+f14fx 71 256d461-14030 code panel -'- i 8-9 free datasheet http://www.0pdf.com 00 o 15 50 ~ 12"'-~ ------73 5 58 ~ i~-""~ ! 1\ \\ ~3 59 co in '- c co (ji 0 3c ? en en m 3: to r- oo( c ::d ~ z c) - ~ 7 free datasheet http://www.0pdf.com 00 .... .... ,j,j 61 27i'~ ~ i .' 26 61 i i f. 43 . j ao .. -~~( 1/ i _ 'f---- 61 1-- 62 61 61 (30 42 56 44 c.. c ~ cj'i o 3: ? ~ m 3: to ,... -< c :jj ~ z c) n ~ free datasheet http://www.0pdf.com 8.6 jd-850m main parts list (1/2) l 0 c. par t no. part name & description remarks 1 256d161-10992 upper cover 2 256d161-15130 base chassis 3 sbcv4 main circuit board assy 4 256d261-15150 bottom cover/1 5 k-8 rubber foot 7028 4 pcs/set 6 256d461-11640 blank panel 7 212d435-01080 main name plate 8 212d435-01570 seal 120v ac 212d435-01620 seal 220v ac 212d435-01630 seal 240v ac 9 932006022 fuse ha.lder 100/120v fh-032 fh-033 f use .h 0 l d e r 220/240v 10 kr-51 code bushing 11 12 sbckbasc key board assy for alp h abe tty p e sbckgerm key board assy for german type 12 sbckbjis key board assy for jis type 13 key top order key top with key no. 14 ck4c208b key switch 15 256d268-11480 escutcheon 16 evvbiaf20e52 variable resister 1 7 n/a front name plate jd850m 18 n/a pan asonic badge 19 212d463-23900 switch holder 20 sde3sb-l main switch 100/120v . sde3sb-e-1 main switch 220/240v 22 gt-205v1 ac line filter 23 g26 grommet 7126 24 dks07 cable clam per . 25 256d463-23290 stay 26 212d459-00431 b/w monitor tv tr12dg9f 27 256d463-23260 blacket/r 28 256d363-23320 foot/r 29 256d363-23310 foot /l 30 256d263-26831 power supply panel i i i 8 - 12 free datasheet http://www.0pdf.com (2/2) jo-850m main parts list (contro) l 0 c. part no. part name & description remarks 31 - - - angle/3 i .256d463-23590 ! 32 kg016 frexible bush 33 wej55b4 fan 34 256d363-23330 fan panel 35 256d363-16994 fd angle 36 256d363-16984 fd chassis 37 256d463-23270 fd bracket/l 38 jk885sdsob floppy disk drive 50hz 2 pcs/set for jd850m . jk885sd60b floppy disk drive 60hz 2 pcs/set for jd850m 39 256d463-20800 fd mat "40 256d463-23240 fd upper panel 41 256d463-23300 tv angle 42 256d363-21820 fd back panel 43 256d463-23280 angle 44 fhbsc34boi tb power supply 45 256d343-00483 transformer sbct42 1001120v 220/240v 47 f126-5p terminal 48 ddpll floppy interface board assy 49 lcbs-04n plastic holder 50 k 8075 knob 51 d b2r(b) led with nut 52 212d468-12040 color 53 n/a m3x6 screw xsb3+6fc 54 ,. m3 nylon washer pw3nylon 55 .. m3 plane washer xwe3fx 56 m3x6 screw xyn3+f6fx 58 n/a m4x14 screw xyn4+fl4fx 59 " m3 star washer ywc3c 61 n/a m4x8 screw xyn4f8fx 62 n/a m4 star washer ywc4c 63 " m3 nut xng3fc 64 " m 3 spring washer xwa3fc 65 . m3x8 screw xyn3+f8fx 8 - 13 free datasheet http://www.0pdf.com l 0 c. part no. part name & description remarks 67 n/a m3x6 tapping xtn3+6df~ 68 " m3x30 screw xsn3+30fc 70 n/a m3x14 screw xyn3+fi4fx 71 256d461-14030 code panel 72 256d161-15120 key board case 73 256d261-15160 bottom cover/2 8 14 free datasheet http://www.0pdf.com 9. trouble-shooting 9.1 procedures of trouble-shooting refer to next check list for hearing about troubles by user. check list 1) when did the trouble happen? 2) does the fan work? 3) does the light of fdd illuminate? 4) does system work when another system disk is set? 5) is floppy disk inserted properly? 6) is there any noise when head of fdd load? 7) can anything make key-in from keyboard? 8) is anything displayed properly? 9) does peripheral equipment work correctly? when trouble occurs, check its aspect and condition, investigate its cause referring to 9.2 trouble-shooting guidance, check troubled part referring to operational 9.2 trouble-shooting guidance description and timing chart of each part, then apply trouble-shooting work. item check point or refference section fan noise is not present. examine fuse, main cord, main switch or transfonner fdd led is not illuminated. 9.2.1 dc power supply inspection 9.2.6 control pcb inspection fdd error 9.2.2 fdd and fdc inspection k/b error 9.2.3 k/b inspection monitor tv trouble 9.2.4 monitor tv and tv controller inspection peripheral error 9.2.5 port inspection another error 9.2.6 control pcb inspection tab. 9.1 trouble-shooting guidance 9 - 1 free datasheet http://www.0pdf.com 9.2.1 dc power supply inspection dc power supply inspection no problem no power supply jd- fdd 700 740 control pcb monitor tv power supply jd- fdd soo 840 control (s50) pcb monitor tv permissible voltage check point (dc) +24vdc +12vdc +5vdc -12vdc \ orange wire red wire blue wire -gnd -gnd -gnd \ j2-pin 1 j2-pin 4 ~ \ c2s(16h) c27 (16h) c25(16h) -+(1)*' -+~., --+8*2 '\ power ~ ~ ' connector yellow wire orange wire red wire blue wire (a-pin 10) (a-pin 7) (b-pin 1) (b-pin 10) j5-pin ,1 ~ j5-pin 5 j5-pin 4 ~ c26(16h) c27(16h) c25(16h) --+(1) *' --+(1)*' _8*2 ' ~ power ~ ~ connector 22.8v 11.4v 4.75v -11.4v .... 25.2v .... 12.6v .... 5.25v ~ -12.6v *1 pluse pole *2 minus pole ac input voltage +15% s standard -1 5% check transformer or ac (lsv, 27v, 32v) connector contact. check or replace power supply p.c.b. yes check point 30vac 27vac jd-700 i~ orange 740 pair wire power supply jd-800 red pair wire orange pair 840 wire 850 power (a-pin 1 (b-pin 5 supply - a-pin 2) - b-pin 6) permissible 25.5v 23v voltage .... 33v .... 29.7v refer to power supply schematics. (3.1.7, 3.2.7) fig. 9 - 1 power supply 9-2 (ac input) 18vac blue pair wire blue pair should remove wire fan panel (a-pin 3 - a-pin 4) 15.3v .... 19.8v free datasheet http://www.0pdf.com 9.2.2 fdd and foe inspection foo and foc inspection install test program diskett in floppy #1 and turn main switch on. program loader is displayed as right hand side display on crt. make key-in of "1" and "lf" from key board. then display is made as right hand side on crt. make key-in of "lf" from key board. make key-in of test no. (write-read data compare test) error yes no ** jd700 program loader 1 jo-700 test program 2 3 9 which [ 1 program start address [_ ** jd-700 test** (or jd-800 test) jd-700 jo-740 jd-800 jo-840/850 1) bad diskette test no. 4 y l0;1. @ 28 .... 30;1. @ 4 y 10; 1. <0 28 .... 30;1. fdd check flow set fdd to exerciser. is head loaded? no (visually check) fig. 9 - 4 yes yes seek error? fig. 9 - 5 no trkoo ( ) ready ( write protect index sector check fdd tp17 paw-data i nterface signal. yes read error? fig. 9 - 6 no write error? fig.9 - 8 fig. 9 - 3 fdd check 9-5 free datasheet http://www.0pdf.com 2-l7 jo-800 j jd-840) j0-850 j 2-u jd-800) j j0-840 j0-850 jd-800 j j0-840)j j0-850 5-1 2-ls 2-h head load error is + v present at jx? *1 no is +v present at jz? ~ *2 yes is ooor cisd present at jy? *3 yes replace or check p .c. b. (head load circuit) *1 jx jd-700 ~ jo-740 yes jo-800 jo-840/850 check for hd ld solnd arm open hd ld solnd coil, or loose cnctrs. replace solnd ?. *2 jz ~ no jo-700/740 jo-800/840 replace or check p.c.b. (stepper control circuit) *1 jy jd-700' ~ jo-740' no jd-800 jo-840/850 check for proper door closer and door clsd sw oper. replace door clsd sw. fig. 9 - 4 fdd head load 9-s fdd voltage check point jk874 12v j3-l or cr1~0 *1 jk875 12v j3-l or cr 1s <::) jk880 24v j2-l7 or cr1 <::) jk885 24v j2-u orcr128 *1 cathode fdo check point jk874/875 j2-pin 1 jk880/885 j5-pin 1 check +24v supply in using exerciser. fod check point jk874 ~ jk875 ~ jk880 n-ls or ic 2g-pin 1 jk885 j2-h or ie 4b-pin s free datasheet http://www.0pdf.com j0-800 j2-l2, 5,8 no jd~/850 j6-1,3, 4, 5 seek error --- remove power from unit and manually turn step motor. yes determine which unit is bind- ing, the step motor or carr. asm. replace. *1 jx jd-700 jo-740 jo-800 0-840/85q jy jd~700 jd-740' fod jk874 jk875 jk880 jk885 fdd jk874 jk875 reapp'y power to unit. jd-800 jk880 perform a recat back to track 00. no seek t- are step pulses . present at jx *1 ? yes replace actuator asm. jk885 *3 for mini floppy from trko to trk1 *4 diskette jd-700/74q sa124 yes jd-8o~rs8 sa120 did carriage asm ~n_o __ ........, stop at track 00 ? seek r/w head from trk1 *j. to trk2. yes jo-800 j2-rs j0-840)j2-l 850 yes no adjust trk 0 flag or replace. did carriage asm bump against stopper? yes use an alignment*4 - - - - diskette. is good wave form at trk n? yes no check point j3-n, m, r, p j3-n, m, r, p j2-l2, ls, l8 j6-1, 3, 4,5 check point j3-f or tp8 tp8 j2-r6 or tp26 j2-l or tp26 check trk 16 38 replace or check p.c.b. ( stepper ) control circuit replace or adjust aling. trk. check p .c.b. replace actuator asm_ (stepper control circuit) fig. 9 - 5 fdd seek error 9-7 free datasheet http://www.0pdf.com read error --------------- i nstall a known good written diskette. solid is raw read data present at j 1 * 1 (46 pin) connector? no *1 jo-700/740 jd-800/h40 50 int. yes foo jk874/875 jk880/885 install alignment diskette check point tp6 tp16 -- do a recal back to trk 00. is rd sig. present at j3 pins land 5 *2 of 3 mv pop *3 (at jd-800) yes no side 0: j3-l,3 jd-840. side 1: j3-6,8 850 --cj yes no is good wave form at trk38? yes ~ no replace or check foo pcb replace r/w head. (refer to fig. 9 - 7) seek error. (refer to fig. 9 - 5) fig. 9 - 6 fdd read error 9-8 * 1 pad is same as load button. yes no replace and adjust pad adjust aling trk or replace actuator asm. *2 at track 0 fod check point jo-700 jk874 j4-1,5 jo-740 jk875 soo j4-2,4} s01 j4-7,9 jo-800 jk880 jj.;1, 5 jd-840 - jk885 soo j3 .. 1,3} 850 sd1 j3-6,8 *3 or, is signal present at tp1, tp2's output of 100 mv pop ? write error. (refer to fig. 9 - 8) " free datasheet http://www.0pdf.com tp 1,2 1f <3 2f ,. 1f trackoo 1v or more tp 3,4 check fdd p.c.b. is index period *1 normal? end no *1 fdd check point ~ jd-700 jk874 tp7 (200 ms) jd-740 jk875 tp7 (200 ms) jd-800 jk880 tp12 (167 ms) check jd-840/85 jk885 tp12 (167 ms) governor *2 or belt *2 only for jk874, 875. no yes check write circuit replace head. end fig. 9 - 7 check fdd pcb 9-9 free datasheet http://www.0pdf.com write error i nstall a known ----------------------- good diskette. ---------- sol. is the output of wrt. amp. present at jx pins] *2 int. jd-800 j3: 1, 5 jd-840/850 another typ~ error check p.c.b. (another control circuit) check p .c.b. (write protect circuit) *3 replace or check p.c.b. (write circuit) side a j3: 1,3 side 1 j3: 6,8 check dc power supply and -5v regulation ic. *1 check seek error. (refer to fig. 9 - 5) check read error. (refer to fig. 9 - 6) is the output of wrt. amp. present at jx pins? *2 *1 fs-7905m sometimes fdd makes seek error. write error sometimes happen when fdd cannot read 10 field. turn on write/read sw in exerciser. *2 jx fdd jd-700 jk874 jd-740 jk875 jd-800 jk880 jd-840 jk885 850 *3 write protect fdd jo-700 jk874 jd-740 jk875 jd-800 jk880 jd-840 850 jk885 check point j4-1 ,5 or i c 1 c- 1 ,14 ~4-2,4 (0)) ic 4- 7,9 (1) or 1 0-1 ,14 j3-1,5 or ic 5g-8,14 e 3 - 1 ,3 (o))or i c 28-8 7 3-6,8 (1) , check point tp9 tp9 tp25 or ic 1 g-13 tp25 or icsa-10 fig. 9 - 8 fdd write error 9 - 10 free datasheet http://www.0pdf.com fo controller check no no no yes yes yes "es yes 1. refer to read or compare error. * 2. refer to foo check (fig. 9 - 3). 3. trouble of foc-lsi 1. check trkoo signal. (foc-lsi (34 pin)) replace foc-lsi (at trkoo signal is present.) 1) check *step or *01 rection signal (foc lsi (15 pin and 16 pin)) 2) refer to read or compare error. 3) trouble of foc-lsi 1),3) replace foc-lsi. *1 involve formatting error. 1) refer to read or compare error. 2) trouble of foc--lsi. 3) check *write oata or * write gate (foc lsi (30 pin or 31 pin)). 2), 3) replace foe-lsi. 1) refer to fig. 9 - 8 foo write error. (write protect circuit) fig.9 - 9 fd controller (1/2) 9 - 11 * page 9-12 free datasheet http://www.0pdf.com read error or compare error check system bus interlace circuit of foc-lsi. ttl level? (h~28v l~o.4v) replace foc-lsi. replace logic inverted buffer fd controller decoder (refer to schematics 4/7) check or replace ddpll p.c.b. ref. 2.2v"" 3.5v ( sn74s124 2 pin ic sn74s124 7 pin 3o~v:.:::rl..r"l- no foc-lsi pin mb8866 27 (mb8876) 26 t1:; ~ (jd-840. 850) 4~ (jd-740.800) 8~ (jo-700. 800) check or replace control p.c.b. t2 ~ 1~.(j0-840. 850) 2~ (jo-740. 800) 4~ (jo-700) no ( multiplex circuit ref. cir. for rooata and data wind fig. 9 - 9 fd controller (2/2) 9 - 12 wave form refer to f do check. (fig. 9 - 3) check control p.c.b. l oata separate ref. cir. circuit (schematics 4/7) signal read data window (rclk) free datasheet http://www.0pdf.com 9.2.3 keyboard inspection k/b inspection start test program i test no. - - -l .... _2_2_u_23_;_1_. (jj)_f_~ yes no is an output signal observed at 74159 (1 h i when the subject key is pressed? yes no yes replace 74159 (1hi - --- push the repeat and data key-at-same time. is an waveform observed at pin 21 of 8243 (1 d) ? yes replace k/b unit. does error occur? yes control p. c. b. > no no k/b unit pin 2 3 16 17 74159 (1 hi 1,2------7,8 9,10 - - - -15,16 1 7 ,1 8 - - - -82,83 74159 pin 23 a 22 b 21 c 20 d 0)1 8243 pin 21 waveform u 'lr----u-- lj----\\~ -, fr------~{ (?-----, u jj u -l r-~ o.5ms j r ~ 8ms 1 waveform waveform ~=: 100ms -----1 l l 8212 (2a) 23 pin ref. signal (e rst 5.5 ) ref. circuit (e trouble of prom 2716 ) e clock circuit xtal 6mhz e input . 8212 (2a) 13pin ref. signal (e kbstb < 18 pin> ) kbo ,.... kb7 < 10 ...... 17 pin> fig. 9 - 10 k/b 9 - 13 free datasheet http://www.0pdf.com 9.2.4 monitor tv and tv controller inspection monitor tv & tv cont. inspection does crt screen appear? yes no is video <1> present at video connector? >---~ abnormal screen are h sync <3> and v sync <4> present at video connector? yes yes check or replace control p.c.b. ref. ic location ( 16c, 160) 16e,16f 16g, 1 hsy (p5) vsy (p4) check or replace control p.c.b. video signal generator * 1 ref. ic location ( 15e, 15f. 15g) 16e,16f 17e 13g *1 refer to schematics 5/7. refer to monitor tv check flow (1)&(2), wave form ~3v ie-- 24mst ~ ov~s !-l. -, {:1.6ms fig. 9 - 11 monitor tv & tv controller (1/2) 9 -14 free datasheet http://www.0pdf.com no adjust variohms on tv unit? yes refer to service manual 5.3. points and method of control with variable resistors. *1 at tv dc po wer connector 60 v ( main ripple ) m pop lower than 1 khz no ~ ripple of +12v * 1 yes check the connector contact of +12v. check or replace dc power supply unit. refer to monitor tv check flow. ( (3) (4) (5) (6) (7) (8) ) fig. 9 - 11 monitor tv & tv controller (2/2) 9 - 15 free datasheet http://www.0pdf.com monitor tv check flow (1) . no characters are displayed. ? - f2v normal crt circuit no characters are displayed. normal video circuit (q14) no raster is displayed. (is the raster displayed? ) see the section of "no raster is displayed". waveform at terminal ">----< 8 of the input connector for video input. check the . control pcb the same waveform at terminal v1. o [vl [40vl waveform is observed. wire disconnection in lead wires vc1 ,.,. v1 video +8 supply line fig. 9 - 12 9 - 16 free datasheet http://www.0pdf.com 1----- (2) no raster is displayed. fbt' q44 ic41 'c444 high no raster is displayed. raster is displayed. see the section of "no image is displayed", (is the raster displayed? ) normal ic 41 fig. 9 - 13 9 - 17 normal waveform is observed. normal q44, ic41 high voltage circuit. fbt 044047 - l430 -q44 12v supply line q18 ~-=:2.5v -u 10~s l- +o.4v ie )1 0-0 v r----..1.-----. 65~s check the control pcb free datasheet http://www.0pdf.com (3) the picture size is small. the picture size is small. normal replace 044, fbt fig. 9-14 (4) horizontal amplitude is insufficient. horizontal amplitude is insufficient. replace l403, 044, fbt fig. 9 - 15 9 - 18 normal check by controlling am- pi itudes of l403 and v r 32. low +b supply line i mproper control with l403 check the control pcb. free datasheet http://www.0pdf.com (5) vertical amplitude is insufficient. vertical amplitude is insufficient. normal >--------i i mproper control with v r 32. cannot be controlled replace ic31. fig. 9 - 16 (6) vertical hold cannot be made. vertical hold cannot be made. normal replace ic31. fig. 9 - 17 919 >-....;n:...:.o;:,;r:....:.m:..::a:.:,i ___ --l i mproper control with v r 31 . abnormal check the control pcb. free datasheet http://www.0pdf.com (7) single vertical line single vertical line deflection coil (between p1 and p2) replace l403 l404,c444 fig.918 (8) single horizontal line single horizontal line abnormal replace r306, 031 12 [11.5v] abnormal replace ic31 normal abnormal 'rv-l vp - p abnormal j-j!v p - p normal deflection coil (between p3 and p4) fig. 9 19 920 free datasheet http://www.0pdf.com 9.2.5 port inspection port inspection set communication port adapter. set and start test program. is good signal level present at connector? yes no is txrdy(15 pin) or rxroy (14 pin) present at 8251? yes check or replace control p.c.b. ref. i c (808sa - 2) port 1 port 2 port 3 no test no. 16 ; 1. lf 17 ; 1. lf 18 ; 1. lf periferal equipment trouble ( high level = +5v-+12v) low level = ~v--12v check or replace .control p.c.b. ref. ic (sn75150 or sn75154) check or replace control p.c.b. ref.ic (. mp08251c ) ref. cir .. baud rate clock generator fig. 9 . 20 port 921 caution ( 1 mis-setting of baud rate selector 2 mis-setting of mode or command for 8251 3 mis-setting of cable contact free datasheet http://www.0pdf.com 9.2.6 control pcb inspection control p.c.b. check. set and start test program. yes ram error no check or replace control p.c.b. ref. (cpu (sos5a-2) ic dv1s (osc) 74ls161 (17c) no yes check or replace control p.c.b. ref. ic or circuit 3 bank f/f (16k) ( 1 cpu (sos5a-2) (10l-29-34 pin) 2 dram (k41163) 4 oscillator (16b, 17c) 5 eprom (12g) 6 power clear (6m) check or replace control p .c.b. ref.ic ( dv(n2:;"~' :~mj ) 2h - 9h 2e ,.. 9e 2f ,.. 9f ( refresh controller 1 ( 1j ,.. 9j) 1k ,.. 8k fig. 9- 21 control pcb 9-22 free datasheet http://www.0pdf.com 9.3 service tools 9.3.1 block repair name *oscilloscope (20mhz) * plus long driver (50cm) with magnet *connector for port * execiser 9.3.2 parts repair name * oscilloscope (50mhz) * plus long driver (50cm) with magnet * connector for port * execiser * alignment diskette *cartridge guide adj. tool * load bail gauge * spanner wrench part number n/a n/a fdd/ext/tu part number n/a n/a dff/ext/tu sa120 069d47400091 069037400102 (refer to test program manual) (refer to test program manual) 9 - 23 free datasheet http://www.0pdf.com 10. ic lsi catalog refer to no.2 10-1 free datasheet http://www.0pdf.com 11. precautions on handling mos ic lsi as applied to control pcb is called mos ic which requires different handling method from other ic because of its mechanism. it suffers breakdown of internal electrode influenced from external electricity (static electricity, leakage current from soldering iron). although protective transistor is incorporated in internal electrode to increase reliability, protective transistor itself is broken if much larger voltage is applied causing trouble. there- fore, be careful to the following points during service time, storage and transporation. sponge securely take ground to solderi ng iron. fig. 11 - 1 (a) voltage is often applied during soldering work be- cause of soldering iron leak. therefore, use highly insulated type iron or, if normal iron is applied, take grounding to chassis as shown on the right drawing. (b) do not apply soldering or replacement during current conduction. (c) in case of storage or returning mail, securely bury it in conductive black sponge. (lsi is delivered as inserted in conductive black sponge for repair.) (d) do not mount lsi on plastic easily subjected to static electrification or foamed styrol after removing it from conductive sponge. 11 ? 1 replacing method of lsi, ie use soldering iron of approx. 30w having small tip for removal of lsi or ic. also apply solder pult (solder soaker). it not sucking type, soak solder by syring or braided wire as applied to crt coating earth, etc. free datasheet http://www.0pdf.com 12. mos ie list i8085a - 2 i8257 i8275 i8251 (j,lpd8251 c) i2716 k4116-3 fd1771a-ol mb8866 (fd1791a) mcm66740 (ascii) mcm66760 (british) mcm66770 (german) mcm66780 (french) .u,pd8253lc (k/~) __ 13. reference description is made by extracting partly from the following brochures. 12 - 1 ? mcs-85 users' manual intel corporation ? component data catalog intel corporation. ? the ttl data book texas instruments corporation ? data catalog motorola semiconductors corpora tion ? data catalog westan digital corporation ? data catalog national semiconductor corporation free datasheet http://www.0pdf.com |
Price & Availability of JD-700M
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |