€S-30(8/# 1001~) INDEX (B28) CORDING GUIDEGERO FSI) ---- DISASSEMBLY PROCEDURE(## #4) - SPECIFICATIONS (8448) PANEL LAYOUT(A4% 6-479) ‘SSK Cireuit Diagram (SSK2— # )-- ‘SSK Circuit Board & Wiring (SSK2— Fa) -- VCO Circuit Diagram (VCO2— FE@):+++ VCO Circuit Board & Wiring (VCOs — betta) VCF Circuit Diagram (VCF2— Fi): VCF Circuit Board & Wiring (VCF2— + #802) 10 VCA Circuit Diagram (VOA2— BR) +2000 es n VCA Circuit Board & Wiring (VCA2— b&4RIB) ------ “22 ‘SEQ Ciruit Diagram (SEQ2— FH) esses eeeeees : sods SEQ Circuit Board & Wiring (SEQ2— bm) -- v4 LFO Circuit Diagram (LFO2— BEB) sess 0scseeeeseee stee 15 LFO Circuit Board & Wiring (CFO2— Fabafta) «-+----- PRA Circuit Diagram (PRA2— FR) - PRA Circuit Board & Wiring (PRA2— Fa8#90@) «---- ADC Circuit Diagram (ADC FB ADC Circuit Board & Wiring (ADC? — F abARE@) --- KEY SWITCH Cireuit Diagram (S882 — FE) ---- PN Cricui jagram (PN32— F)-~ REAR PANEL Circuit gram (PSR REAR PANEL Circuit Board & Wiring () 7—-S40-2-— bata Standerd for circuit inspe PARTS LIST (yy 24) and adjustment (2 + Sage)€8-30(8/# 1001~) CORDING GUIDE (4HO#31) Micincurt soarp AND wiring ‘Two (2) black wires are connected to "E" on citeit board. One goes to each “E terminal of A and FG citeait boards. In this case, the cong system is flows: [—ietirenen., suze? Rance Pareto [be pat how the vinw | (Soldat pee mer! ‘tem thesia pars mounee)\— Termin! Eshonn on th ot isymsot vescrietion ¢ itor © citroen th, Ecotec oct 5: source wa ea a 2 Soar vr beat Pipinare Conetor diode wich yo SET Sante (2a mene Ble cit By ABBREVIATIONS OF WIRE COLOR IN ELECTONE BACK nnn Bl BROWN corres REDinnene onan OR YetlowiTYE Greet Tea sue See Moun nave cer wre we Gass chédiecnnvea sev alu fe WIRE COLOR — Musical Note Indication © cf 0 of © F Fe G Gt A At @ ber rd ft frie oh AE on Ye GR of vi Gy wm oo 8 mK Bi tosic symaot nor Exhin O* (iri) a sb De wa aD abe ieee tata von Py | SY 7s 7 nano] 3 v | Bly oat | file ito on aw Eos Eo peti a Tune, siamo ooo 3 ot Ios toy rah : ° 1 o|s Sool oti efile 2 38 ot ]t poly : ‘ sas solo€S-30(8/ 1001~) DISASSEMBLY PROCEDURE (4 #=)8) Removal of Panel KAMORWY IHL Remove all serews illustrated above and take away the panel, lifting it up gently. BOB EAL, NAVELAMBEV EBS RUALTREU. Removal of Keyboard BROWSE ‘After removing the panel, pulling out the screws as shown above permits rotating the keyboard. ISRIVEBRN ILA, HOBRIEALET EM MEDAL SKATES, Removal of Circuit Boards Yo hORAL Take the circuit boards away gently from the panel, removing each volume knob and hexagonal ‘nut without any damage or scratch on the panel. RI EAT COREE EY OLDDEAEA Ady PERULT. Y— RENAUD SBP UTFau,cS-30(8/# 1001~ Keyboard CONTROLS PITCH veo ver Voa TRIGGER SEQUENCER SPECIFICATIONS (244%) 44 keys, 37s octaves, TUNE: +65 cents to —65 cents DE TUNE; VCO 1: #700 cents 10 ~600 cents £G: SELECTOR, DEPTH KEY VOLT: SEQ/KBD FEET; VCO 1: 2" 4' 8" 16° 32° 6a" VCO 2: 4" 8 18" 32° 64’ 128 Pw: 50~80% PWM: 10 ~ 90% (LFO sine) MOD VCO 2 (VCO 1) MODULATION: FUNCTION, DEPTH = CFI INPUT:K VCO veo LEVEL vco2/NOIse/ EXT LEVEL VCR? INPUT: VEFIH/ IN /PL voo2 k80 FOLLOW MODULATION: FUNCTION, DEPTH CUT OFF FRA. RESONANCE EG: SELECTOR, DEPTH FILTER: HP /@P/LP VA 1: Input selectors: VOF 1, VCF 2 anauVCO 1 RMOIVCA2): NORMAL/RMO voor/LFo HOLD: HOLO/EG. EG selector: A, Cand € MODULATION: FUNCTION, DEPTH LFO/NORMAL, SINGLE/MULTI CLOCK SPEED: 0.1~30H2 STEP: 1108 NORMAL/KBD CLOCK/MANUAL MANUAL/START or STOP HOLD PITCH: 1 t08 EG. TRIGGER: KBD/SEQ/EXT EG TIME: NORMAL/TIMEXS. EGIL ...0~ -5 ALL. 0-45 AT... Imsec.~ 1500, DT... 10msee.~10see. RT... msec 10sec. 62,3; AT Amsec.~1see, OT... 10msee.~t0see. SL...0~ 10 AT... 10msec~ 10see. LFO. » EG: FUNCTION, DEPTH SPEED: 0.1 ~ 100H7 EXTERNAL. Sensitivity: 0/20 (dBm) TRIGGER LEVEL: Trigger ON at 60mVp.p (Min) SIGNAL LEVEL PORTAMENTO ... . 4sec. at LONG PITCH BEND 1 octave at LIMITTER max. ourrur BALANCE, VOLUME TERMINALS ourPur . 4, 192,2: HIGH: 0d8m/6002 LOW: —20d8m/600 2 for volume control CONTROL VOLT, TRIGGER FOOT CONTROLLER SEQUENCER OUT Key VOLT in/out TRIGGER, IN/ouT EXTERNAL... IN PHONES: for heedphones POWER SOURCE: AC 50/60 Hz POWER CONSUMPTION: 40W DIMENSIONS +=. 978(W) x330(0) x 173(H) mm 38%4(Wx13(D)x6-13/1 6(H) in 18kg, 33.0 Ibs WEIGHT.8-30(8/# 1001~) PANEL LAYOUT (*8A0U4 79 b)€8-308/# 1001~) SSK circuit Diagram neveanr Moet ares er Ssx_(¥#26800 70.020.5) 8! tro riga BPP wrote t Standard Voltage ‘Genraton morte 0. veo. cr -yMeaa00 (e5.4,6,0.747S008 ter “Nowanseon 58. eoron0@-0 ott nore 2" cck Poet Sse bon | rng s.2 ‘aise oun eMur-oun, KEC-90106.7Off KEP.NA.80288.78 4 (Nowe) Lic tet ‘yor24a00 ez Tosoaa e468: TA7504 15 C705 ler Navassa 2. Transistor (497225) * 28A861 2scase 23, Resistor (HHA) 1% . Diode ¥44~ F) 2012: 0227.58 Diwa 2 151885 ‘Semi varie resistor F038 #92) VaK4-1 Typeeer verse €8-30(8/# 1001~) Sverrog-10 voreni 6 be Tune Cleat VCO circuit Diagram ae rat FS DsiaisIaEs A [yp ene i OFS A ro.c1p- OR t vows "FPP re tS | NFO apn fo | WB, p86 vernon Be Veena « > -| beac fe pact P& yer 20008) eur Be ow 1 SON [38 veraun- ay wn Teen ee Tear p yBtotE sox coe. Fro eo LOND S HRA fool Mon PAT Hg —-oM%St coer 10) trosipa YOM ance oe a - KFC-90107-78VCO Circuit Board & Wiring View from the printed psttem side of the circut board, KGW MNS REARRETT KEP.NA80289.78 & (ore) nic ea 1623 08,7 rea, 9 163, 2. FET FeTI,2 3. Diode 1,2 3,4 4, Risstor marke marks + NUMAS5GON 2 1A7506S #1600183, 1c00158 21600181 28K300 naga 2181555, 200% 1% VCO 111 (1600153) This IC is used for voltage controled osciatee Many delferent frequencies are produced by the vole 12g supplies, 1. FT ccs letter for determination of th The elgewie euttont is provided 10 the pin from transposition enanging etermine. 2KV co Input of the key voitage The input of the voltage is provided to the pin ia corporation with the ays hel down, High voltage High frequency Low voltage Low trequeney Cox.) [ingot Vora [Output Freaueney ‘0750 190:8H (C2) ‘o500v 261 6H (C3) a.o00v | 2055-088 (68) Transpotition “normal a ‘Jorrser Zero adjustment of input 4 butter circuit, 5. Vee sou. 15V input power source 5. Com ... Phase compensation fer input butter iy. the output KY + 1VI is supplied to the pin 7. OUT... Output — SEVpp As tothe fraquency, eT etar to the Pin N02 WK). 8, GND... Extn 9. Veet cos Input of the standard voltage 10, CT soins Cieuit for time constant. “The following wave shape is roduce. 11. BT vena Cireuit Forte constant ° Dostermines the discharging voltoge 12TH Input forthe comparator. Ingut of the wave shape (NN is provided, from the pia no, 14 (TO) 19, fret = Input of the standard electronic current 14. TO sane Output from time constant circuit: TNA The atoning wove shape i produced 15. VIB. taput for vibrato conto! wave 16. Vee nus #15V input power soures. 8-30(8/# 1001~) WSC IC (IG001 DAL 6.270 vv Oupu of coud wing wee owe we Posie 2 oo at mm $2,271 strut of tangy we for pote ‘np detie wang naw aoe 12. Int of Be ae for soda i 18 Sth 5 wa for easy2 13 18, VCF IC (1600156) Al Kv wt Vee vo ano Fo v a vee * e He - Signal Inout Input signls trom VCO are orovided to thi pi, Key voltage input In order to change the tone color according f0 the tone range of ey” board, the degignated voltage of the key will supplied to the pin. (025° ov) Adjustment of the cut off frequency Set the control currency of the cut off frequency. Input of the cut off voltage Inout voltage of cut aff Irequency is tupplid 0 ths pin 50 thatthe tone Color ean be changed, The center point ofthe cut off Waqueney can be When the VK. is 0.25V and. Vt is 5, the eut off fequency i set 10 just 1KH2, +15V input power source sdjustrent. Tye O control current se15 the O qual 1010, when VO is Ove. Inout of the voltage for @ conte, Gis variable azzocding tothe contro! voltage spplied OV (Max, 0-10 men the contrat voltage is OV thin, 0-05, 1 fend back “This is the feed back output pin for the © control By which the Q ie etermines low-pass output ~BdB/0CT ‘The outout of lower tre D). uvencies ae produced vu € pin for determination of the ext otf frequency. 1. ~18V power source, Banc-pats output #1208/0CT, "tne output of intermediate requences are produced, pin for determination of the cut ‘ott frequency +64B/0CT ‘The ourput of higher fer Wh quencies are producs Input of feed back The input signal for determination of cutoff fraquency. Seoenon veoxruc.at €3-30(8/# 1001~} Explanation for 1 (roma) (£2 veo xr198 VCF circuit Diagram yea PHD“ PB yea vragb2) ‘vRe) [eRe TH) [SLector| bePTH (PYRE) 4 Isevecton|(PVRIO)) “(PSW7)(PVRIZ) ‘ray veo-n@2) Evecare VORP oy ve woo aee Lucan wert eh veo, ** sea.0it 3 ee tes wis vous * Comba ey Iel,2° Icoolsstaency 1C3\4: NuM45580N marks «6. i,2.3.4 + Rank RIA RS Ra ‘&_[30K | a7 [Bak [430] ¢}20K | sat KEC-90108-78 4VCF circuit Board & Wiring VCF-EG (1600152) This IC generates envelo sipolied to. VCF and conte ANC vane Not connected 2 BI Input of butter amp 3 OUT... Output of butter ampritier ‘The buffer amplifier is but ia for the purpose of matching impedence be at —hon are KEY.OFF 4. GND... Ese 5. Vee ws H18V input power source, 8. Gt nn Gate 1 7 G2. Gate 2 8. Vee... ~18V input power souree 9. AT co Input of butfer voltage for determs: ation of the attack tine Input of the votage between zero V and 10V (s provided andthe attack time is conteolled from 4 mS until 18. View from the printed pattorn side of the circuit board RO— LM REBERR CT. 40. OT wm out of bull vue for dem Ingut of tne voltage between 200 Vand TOV is provided and the fist deesy tine 6 conttaties tear toms soos 2. eas ® marks 221% ° cho rm i Toe eee oe an me 3 Ban 30 from KEY-ON until release is con second, KEY.OFF KEP.NA 0290-78. €8-30(8/# 1001~) 12, TC... Output of the time conti} Cutout of OC voltege is produced to that the ench time of attack, OT te lower the volta 1. LC. Output of level contr soy. Output of DC wottsge in produced so thet, °. the IL and ALis 7 i af \ -sv ohage ‘The higher the voltage, the hier the level or ‘the lower the voltage the lower the level. 14. AL sous Input of butter voltage for determi nation of attack lve. Input of the votege between [0V~ TOV i provided sn te stack invel iscontrollag from OV unt 5V. ae 7 15. SLs Input of tlfer voltage for determi Normally Hixed to zero vol 48 ov st — sv 16. IL Input of buffer voltage for determi: ration of the initia evel Input ofthe voltage between ze10 OV tnd ten 1OV vt provided and the vita evel eoateoed rom 2070 t0 minus . of \ =10-€S-30(8/# 1001-) = = ~Exsanation fr 16 . tiem VCA Circuit Diageam VCA IC (1G00151) id or chnging ttre epotenen " 068 | ---- 7 L 58 ake Frei [oo Bata 2. Liao, Input at owe! conteo! voltage ‘ete for near change oF IME teva veom@s ot > =| sermntse fel = mona Jo L- = Fai oat wt TeSwit 3. AN cu pt {epot of the lve! modes sna sprowded (ra) wee wn ourPuT ‘he, Fa ‘iil > From ty (PSw9) t Aone 40 HIN. Negative feed wack Normally unesed vorsea@. olf [tool t butter 6. vec +18V input power source, vor-teaidsRolE2 tt, + Gno Eun 4 2 OUT. ou: yd Sto nam vr Data of he twin wave Boe ‘sway i on QEe, 8 woced t " 1 a wot veo-n18 1 KEC-99109.78&VCA Circuit Board & Wir View from the printed pattern side of the elveult boar. (Wotel RIALS RIBEIR CT. aie Ie1~4 1600181 ies, Nanwasse. ics waras2 4, Semi Variable Revetor CHE) URI~9 : VEK-41 Type KEP-NA 80291-7844 VCA-EG IC (1G00159) This 1G qonsiaies envelope wwe shane ws suis! to VEA and control the tone volume Tet Hap oF sma level Foxe 10 OV 281 3 our 4. GND... Ean 5. Vee... #15V input pose source 6G). Gow 1. G2 sons Gate 2 reve _ sr ov! : a ‘ b Fat staring data oy — Key ON-OFF data 8, Vee vn. HIV input power source 8. AT... Input of bulfer voltage for deter Input of the voltage between ze V an 10V i provided and tho attack Lime contalled trom 1 m$ unt 10, TOT... Input of butter voltage for deer ration of decay time Input of the voltae between ze00 V and 1OV 18 provided and the decay time 1s costraied tram 10 m second until 10 second or 11. 207. Inout of butter sotiage for deter Input of the voltage betweon 2010 ¥ and. 10V 8 provuded and the time key-olf until release i= contvlled ‘om 10 mS uni! 10 5. ot cs-30(8/ 12, TC... Output of time contol Oviput of the OC voltage 16 pro: ‘tack, 1st Dueay and 2nd Decay are KEY.ON ore ‘The night the voltage, the shorter the time andthe lonor she voltage, the lon 13, Le oe Output of Hove! contr! as Level + tx i nov 1fu—e Ouiput of the OE voltage for AL and SL conteol ss The haer the voltge the Ingher the Towel andthe low the voltage, the lower 14 NC... Not connected 1B. So. Input of butler voltage for determ: Input of she vattage between 2810 V and 10V 1% provided to. thot” the sustam level can be controlled ~ 10 / s0\ ——o 16. NC... Not connected 1001~) -n-SEQ circuit Diagram€S-30(8/# 1001~) SEQ Circuit Board & Wiring os] : SY] POY View trom AKI~ M5 BEBARETY —1a- KEP.NA 80293-7825€8-30(8/# 1001~) LFO circuit Diagram 8 ssxpmyo : : (PORTAMENTO) Poe ae! (PVRS) pa AE ese ons) 6+ 1yp sap Otgt@_ vas External Pro-Am ig Reset Control ee ~ ‘rm AE: veoneb10 * ae two ane External Trigger samc seerm) Some Hold Creu EM | 7 co.siib KEC-90112-78 & =16-LFO Circuit Board & Wiring €8-30(8/2 1001-) View {rom the printed pattern side of the circuit bosré, ao PO OE BRETT. VCO II (1G00150) 1. Vi ccoooe Input of the contro! voltage, The trequency is variable in accord: ance with the voltage supplie. ver Input of the vi voltage oxtoy f 's provi, veon 2. GND .... Eartn ae Capacitor for determination of the frequency 4. Vee... =15V input power source, 5. Vee... #18V input power souree 6. SIO... Output of sine wave 20vep 7. $0 ess. Ourpur of sawteoth wave —— 38Vee Se Bad caus Setting for standard electri current KEP.NA80294-78 4. @ (Wore) ie ter tcoo1so 1s passe ico: HANaB2 lo2~4,6~8 = NuMasse 2. Transistor (F974 9) ta 198,17,20 + 25459 Tr10,13,16,18,19 250861 8. Diode (¥47— F) > 181555 20 151715 4. Fer FETI2 : 25K308 ~16-€8-30(8/¢ 1001~) PRA circuit Diagram Pre~Amp( 1) me 1s, ue ARI tect | Iel,2_sHalssew Tr5,6 | 286458 pi + 280235 13,7 + 250561 eT Tra\8 + 250490 oot Conroten Diodes + 151555 9 a KEC-90110.78PRA circuit Board & Wiring ® Havas2 2, Transistor (#32222) THs: 250488 Tas: 780235 Ta): 25a861 Tas: 25aa00 3. Diode (94 #—F) Dim ig: 181885 4. Semi Variable Reset or (ERAESEIE) Riz: VBK-tt 5, Metal oxie fil resistor (RE@IE) KEP.NA80292.784,North Eoropean and Britsh Spec (Wapan Spec. [USamerican “and Canadian Spec. HER SH, [ACTUAL CONNECTIONS ON VOLTAGE SELECTOR) 2a0Verea 220Verea 130v SPO 6 ovaree [Australian Spec] S-30(8/# 1001~) ADC Circuit Di Distope=t Diodes D6: G2z5aA 22 10Dc—IR 03,4,5:151555 Be Dra:w2iso foe") ++10V Regulator TISY Regular . veo-+1 5.5 BBE “ roe ith SET antes ol ge B Lo veo-oen 0) 1222, ono, woe Icl,2-NuMass60N + Tel 230235 s ‘gx 12,3: 250438 2 Tray5 258561 5 Te :28a490 We: 90.15008222 '28¢508 veo= 189.1 o ae KEC10114.97.4. Wore) 1, FUSE 2-3 pan sees opens. 6S 1sar or THAT (min) 02 JivsaTiuu 034s so0c.1 so0c1n 181555 022564 wz150 1061 Numassa 5, Resistor (#14) mark 1% 047D.1W + Metal oxice film (Rese tget) own ae 6. Semi variable resistor (PREHEIN) AVI2.: VIGK Type B2KO KEP-NA 80296-78.4.KEY SWITCH circuit diagram re | o2 | a2 | 2 ae a [a o3_| os | es | es | 63 cs | os | es ae19) 363003) see 220040 se ¥e15 wo 28 seeanb10 poe senso ! : aa | yyy YYVYYY ssKcib 8 salen! ca sscoeman eles co sscaniDay alec od seeao——. be valve velve velve velve velve ve] secure 2° low orlor oalon onlor onlon olor oo sseerpno—_#E. re ele selec nelne rele tlre fA KEC90113.784 PNG circuit Diagram PILOT [BALANCE] VOLUME] [PHONE| LAMP vRia RIB Rea vees vex s@19 PEE vera Senay Sk rmo@e co 4 ! 1 x 1 ! ine t ious jg peor Bence) L le! on nai 2 RE vexpupam * 2 smn) scribe vento) pra sn. ena 2u-) KEC-90113-78 a €8-308/ 1001~) ~20-€S-30(8/# 1001~) REAR PANEL circuit Diagram (JK) FOOT EXTERNAL} TRIGGER) [KEY VoLT| SEQUENCER) |CONTROLLER} OUT _PUT] TIGGER VOLT o/-20 IN OUT IN OUT IN oor We 2 142 1 HIGH/LOW Swi ut ves ‘a8 we ve vio tt swe oe c c c = i. A A A i & g go a | go | q gg sh a af EL al a ox a el 5] al a ei og ie aa eafzt o3¢—c8, 42 2 z ef @2 ged ¢ ee $2492 #2 2 é ge ge ee k ate $3 3 302 2 Ey 8 $ gs kg Bge2 gg ae ge gee 3 KEC-90113-78.. REAR PANEL circuit Board & Wiring EXTERNAL TRIGGER KEY VOLT [SEQUENCER FOOT - OUT PUT — [~ | C a (TRIGGER) (VOLT) UT IN ‘OUT OUT CONTROLLER 2 142 1 Ss §& = 5 = Se BY alt et it |——— [eB VAMAHA\ EE bis} Af Jeet | als | ase Lc 62650" | ao me a ’ S 6 o~ oo o © 8 oe KZ Sirocco) Pecan S832 yeo-cuny la Imi2sccpa| Wi2s.00] bas2venas a Levexc-8 Bros Lu samc [wd sronvad Yscomos WE sooxoe Is yexcwms sea WH? ssearnioon sexo. yeosea9) |W om an.10 Lovercipsa roam) ae a ssxex Le swans 18 veneers) LOR x. swears sit -21- KEP.NA80295-78 A.€8-30(8/# 1001-} Standerd for circuit inspecpion and adjustment ADC Circuit Board 1 18V Adjustment (#15V Adjustment) until a voltage of ~15.00V is present across —15V and E terminals. Then, make sure that 3 voltage of +16 # 0.16V is present across #15V and E terminels. HOV Adjustment itil a voltage of +10.00V is present across +10V and £ terrsinals. Losd Characteristics When n6 load is applied, the fluctuation should be smaller than 20.8% and should shaw neither oscil lation nor abnormal voltage. Make sure that the regulator's response to load fluctuation is within 80m see. When connecting Myler capacitors of O.47uF across each terminal and the & terminal, make sure thet neither oscillation nor ‘2bnormal voltage is generated and the response time is within 60m sec. First Stage Voltage and Ourput Voltage When load is fully applied, the output voltage fluctuation should be smaller than 40.1% for the first stage voltage fluctuation of £15%, and the regulator should respond within 80m sec to a drastic change in the first stage voltage Ripple Noise \Whhen load is fully applied, make sure that tipple noise smaller than 10mVp-9 is present at each output termina —22-€S-30(8/# 1001 SSK Circuit Board ~23- |. Power Supply for Key Assignor +7V Adjustment ....... Make sure that voltage of 46.9 £ O.6V is present at Tst Pin of IC1 =7V Adjustment ...... . Make sure that voltage of —6.9 + O.6V is present at 40th Pin of IC1 . Key Assignor Clock Make sure that @ waveform as in the figure below is obtainable at 2nd Pin of IC2. clo 6.921 ov -6941V 0 f=941KHe Pitch Bend Voltage Generator Circuit 8, Set the PITCH BEND knob to 0 position, then adjust (@-6.7) terminal, b. Set the LIMITTER lever to MAX position and PITCH BEND knob to "4" position, then adjust s0 that 4.000V is obtained at PB (213) terminal Note: When PITCH BEND knob is in“ position 1.00V is obtained at PB terminal Until 2.000V is obtained at CP6 or 2 Key Voltage Modulator Circuit 4 Set the PITCH BEND knob to 0 postion, then adjust (VIRG) so that -2.000V is obtained at CPT. ». Adjust the TUNE knob until 0.000V is present at TU (3)=10) terminal. Set the EG—DEPTH knob in PITCH Section o 0 position, then eejust (VIC 3) to that 2.000V is obtained et GPa. . Key Voltage Generator Circuit 8, Press Fs key and adjust (WRT) s0 that 250 * 0.2m is obtained at CPO, b, After the item 40) adjustment, adjust (VRC) s0 that 166.8 + 0.1m is obtained at CPIO oF PI (D3) terminal. «After the item 4) adjustment, adjust, terminal intl 186.8 + O.1mV is present at CP11 or KV . Portamento Circuit a. Set the PORTAMENTO lever to S position, press F2 key, and then turn Cs key on, make sure that 2 waveform as in the figure A is obtainable at KV (D—1) terminal. b. Set the PORTAMENTO lever to L position, then make sure that a waveform as in the figure B is obtainable at the same,Fy TS ans Fig, A 7. Trigger Mode Convertor Circuit 188mV) Fy 3.5215] €S-30(8/+ 1001~ €.(2.00V) Fig Turn on and off the C1 and Cs keys as im the figure below, change the key mode from SINGLE to MULTI, and make sure that the KTR terminal output is as shown in the figure. Chey Chey ore. ow on During SINGLE Mode, as long as a key remains depressed, operating other keys hes no effect on the KTR, which is kept ON. During MULTI Made, depressing keys successively permits KTR to turn ON fone after another with prarity given to higher tones ~24—8-208 = 1001~) VCO Circuit Board —25- Tune Circuit Set the TUNE knob to fully [-] position and (4) pasition, make sure that +75 # SmV and —75 + SmV are respectively obtainable at TU ( 1) terminal, EG Modulator Set the SEQ/KBD/EXT switch in Envelope Generator 2 t0 KBD position, AT, DT, RT to S,$L to 10, EG-SELECTOR (PSW1) to C position, EG-DEPTH (PVR3) to 10 and turn a key ON, make sure that OV is obtainable at EG ()—13) terminal. (+8V Envelope voltage wavetorm is fed into C (8)-78) terminal) Turn the DEPTH (PVRS) knob to the left gradually and make sure the voltage at EG terminalis gradual ly diminished, resulting in 0+ 0.1V when the knob is fully turned to 0 pesition. DE-TUNE Circuit ‘a. Put the isoration plug into KEYVOLT-IN (J5} on rear panel, connect the KV (@)-8, 10} terminal to Ek (D1 ~ 4} terminal with jomper wire and set the MOD VCO2 [PVRA) to 0, thea adjust (VR) so that 0£ 50HV or les is obtained at CPI b. Under the condition of item 3a, acjust (WR) so thet 0 SOHV or ess is obtainable at CP2 ‘, Remove jampor wire and isoration plug next. Let SEQ/KBD switch (PSW4, 5) at KBD, set EG— DEPTH (PVR3} t0 0 and turn Cs key ON after TU (.1)=1) terminal is set to 0.000V by TURN Volume. (at the time there is 2.000V at KV termina.) When CP2is set at 2000V by DE-TUNE volume make sure that there is 2.000 at IC6, 7 second pin and aso is 168.8mV at IGB, 7 szcond pin when F2 key is ON. |. Voltage Control Oscillator Circuit 1 (VCO) & Wave Shape Convertor Circuit 1 (WSC1) a, Set both VCOI and VCO? SEOIKBD switches to KBD side, MOD DEPTH (PVR9, 10) ae 10, FEET 1 (PSW2) at 2° and turn the TUNE (PVR1} volume untill 0.000V is present at TU ( 1 —1) terminal. Then adjust DE=TUNE (PVR2), wien Fs key is pressed, so thatthe voltage at CPi same as that of CPA (168.6mV), Next, make sure that voltage of 2.000 # 0.001V is present at CPG during Ce key is on. », After the above setting is completed, asjust (VC@) to achieve KX. 1 (=) ermine! output fre- ‘quency of 84292 when the Co key is ON (KY terminalis 2+0,001V). «. Adjust [VR3) to achieve 1058,6H2 when the Co key is ON (KV terminal s 260+ 0.1m}. Note: Repost (b) ang (e) above so that each frequency variation is within 0.1% even when switchins 4. Check thatthe frequency i in accordance withthe chart below wnen FEET 1 (PSW2} is switched, 23 in 4=(6) (4, MOD-DEPTH, PUNT, PW are O and SOR! 2428 FL 1 4@=7) and PU 1 (5) terminals when | rose 7\ a | sae ov within 40.1%cS.20(8/# 1001~) 5. PW, PWM Circuit a. Swit the Ce key ON with FEET 1 (PSW2} at 16", MOD FUNCTION (PSWE) at /\/ end MOD- DEPTH (PVAG) at 10; the frequency should change between 965 and 1150Hz when 3.2Vp-9 AV wave is added to the ( (@)—1.2) terminal (when the voltage at the [\/_ terminal is shifted bet ween #1.8V and —1.8V, the frequency wil vary between 965 and 1180H2). At this time, if the MOD “DEPTH {PVRG) is tured to the left lite by littl, the frequency variations become less and less; if itis turned all the way to the let, the original frequency (1083.6 & tHe! should appear. b. Be sure the3.2Vp-p /\/ waveisadded to the /\/ (@—1.2) terminal. When PWM1 (PVR?) is at 10, the PL 1 (7) terminal receives 90 ~ 10 8% duty voltage. Then, when PWN (PVR) i teturn ed t00, ten wnen PHI (PVRS) is 90% the [L1 waveform duty voltage is 90+ 9 10% 90% 1.6 Note: verted wave is fd out rom th ar anal OUTPUT. — 1.6 90% Wen +4,6V input When =1,8¥ ioput ‘nen Pvt is 905 6. Voltage Control Oscillator Circuit 2 (VCO2) & Wave Convertor Circuit 2 (WSC2) 8, As in 4—(a), set FEET 2 (PSW) to 4°. With the Cs key ON (KV terminal; 2.000V) adjust 421GH2 at 219-2) terminal for 'b. Then, with the C2 key ON (KV terminal; 250,0mV) adjust (VR) for §26.8H2. Note: Repeat (a) and (b) ebove so that each frequency variation is within 0.1% even when switching ©. As in 6=lal, check that the frequency is as indicated in the chart below when FEET 2 (PSW3) is, switched, FEET | Frequency Wa) Note: The waveform shown below should be obtained at a 4215, the [2 {@-4) terminal at the same frequencies Pa 2107 as KX 2 terminal. 16° 1053.6, 32" 526.8 41.640.3V_ 6a" 263.4 —| ov ue 1317) 1,640.3 within 40.1% =26-¢S-30(8/# 1001~) 7. PW, PWM Circuit Switch the Cs key ON, the FEET 2 (PSW3) to 16", MOD FUNCTION (PSW7) to (Vand MOD— DEPTH (PVR10) to 10. When a 3.2Vp-p (wave is fed to the (AJ (@)~1.2) terminal the fre quency should shift more than 970 ~ 1160Hz (when the voltage at the A terminal is shifted between #1.6V and —1.6V the frequency will vary between 970 and 1160H2). At this time, if the MOD—DEPTH (PVR10) is turned to the left litle by little, the frequency variations become less and less; if it is turned all the way to the left, the original frequency (1053.6H2) should appear. b. Check that a 3.2Vp1p AY wave is added to the J (@=1.2) terminal. When PwHM2 (PVR) is at 10, the FL 2 terminal (@-4} receives 90 ~ 10 + 9% duty voltage. Than, when PWMI2 is returned to and PW2 (PYRE) is at 90%, the [L 2 waveform duty voltage is 90 + 9%, Note: Inverted wave is fed out from 90%6| the rear panel OUTPUT. When 41.5 input When —1.6¥ input ‘men Pvi2 ie 90% 8, FM Modulation Circuit a. Set the M /CO2 (PVRA) to 10. Then, when the Ce key Is switched ON (KV terminal; 2+ 0.001 V) adjust at TPH for a value according to Fig, 1. Now, when the Cs key is switched ON (KV terminal; +250 + 0.1mV), adjust (V3) according to Fig, 2 Repeat these adjustments, making sure there is no deviation in the adjusted value, even during switching +4s04V 2v 250m +1401 1252300 Fig t Fin. b. Switch the Cs key ON (KV terminal, +2 * 0,001), When MOD—VCO2 (PVR) is set to 0, 42 + 0.002V should appear at TP1. In this condition, when DE-TUNE (PVR) is at the (+1 side, +3 + (0.1 should appear at TP2; when itis at the [-] side, +1.5 + 0.1V should appear -27-cs.30(8/# 1001~ VCF Circuit Board 1, Voltage Control Filter Circuit (VCF1) 2. Voltage Control Filter Set INPUT {PSW1} to [\, 1 and LEVEL 1 (PVA1) to 10,LEVEL 2 (PVA2}, MOD DEPTH (PVRO} and EG—DEPTH (PVR11] to O respectively. Then set the VCO1 FEET to 4’ and turn the Cs key ON. Add a 3.2Vpp IX. wave to the [\ 1 (D-1) terminal and then adjust CUT OFF FREQ (PVR7) and RESONANCE (PVRS) for #5V at TP2 and TP4, Under the seme conditions as in 1=(a), adjust for peak level anc (VRQ) for peak point so that an 0.8Vp-p waveform is present at the LP1 (@)=7) terminal Next, the BP1 (@)-6} terminal should have @ 1,0V outout waveform, end HPY (@)~8) terminal should have 1.4V (check that the KV voltage (#500 5mV/} is added to the second pin of ICs} LP1=o.8¥ BPi=1.0V 053% HPI=14¥ Leave adjustments 2s in 1b) and use the CUT OFF FREQ (PVR?) to adjust for a TP2 voltage of +7 + 0.1V. Then tum the 8: key ON; when the KBD FOLLOW (PVR3) is set for SOUMY at the second pin of IC1 the LPI level should just peak, Next, when TP2 voltage is +3 # 0.1V turn the Ba key ON. When the KBD FOLLOW {PVR3) is used 10 set for 500mY at the second pin of IC) the LPA level should peak. Return the settings to the 2-fa, 6} condition, When the MOD FUNCTION (PSW4) is set to (Vand MOD DEPTH (PVRS) to 10 check the cutoff frequency by listening to the sound according to the input AY wave Set EG1 ~ 3 to any position and EG DEPTH (PVA11} to approximately center position. Peak fre ‘quency should vary according to the EG waveform when the EG SELECTOR (PSW6) is switched from Ato E ireuit (VOF2) Set INPUT (PSW3) to [\ 2 and both MOD DEPTH (PVR10} and EG DEPTH (PVR12) to 0. Then set the VCO2 FEET to 4 and turn the Cs key ON, Add a3.2Vp-p IX. wave to the [X 2 (F cia es fo1z47 na sozdo| veo = do. = #82500 weoy= ty ss ac'247 NA soz000| ver — do = _r82600 wer y=] i 6 [a 1307 wa 8078 10] vox 782510 veny-t t 63 [2g 1347 NA B00 70/PRA 782620 pRayo + | a a7 dl aa7 napO} 0150 28250 seay-h 8 [5d 1347 NABO 2040] LFO sem Lroy-t 1 70 30-120 NABO?A50 Fae0 v Kya 39 90-720 WAU) AD 20640 noe v-H sx bozo" Aso 70|— co. — =.= Evone 6am = [30'12!00: NA80!36;40)— do. — = 90. = = "apen n= il rT | / fn co vzeaeoalne "yeo0 7 ose _t fo 100 00020] a= HATas2 = Toman [01000 1600 240] ao, — sort zs AND fo 100 6-00 1e0|=de.— “Tesoes = Timer fo 00 00 1300] 0. — uM = [OF Amp fo p06 00"75}00)= do.— ooo = veo i fo 0160 16-605 10] do. coors 5 Vea 1105161001820 co. = ‘0078 E6vGF 0 TODO [0's 9] co. T6016 : Veo {i000 00"'6e0)= do. = icootss = wer i {a0 10100] 1G :00115:80|— do. — 1600758 ” WSC laor10 00) 00'78;00)— <0. — 1600168 = TeGvea fob 6 oie Go| do. ane vier | lojic00 iG 0016201 d= PATSENE = fing HOD t 01000 6 01690 do. = ‘Toeoter = ‘one i 1031000 6-0 7 70|= do — “eos = Tinwense i 0 100016 12500] do — TATEOAS = Top ame i 10110;00/ iG {02'56;00|— do, — TATSOS 2 LOP:Amp. | 10.10.00 iG {02375100|— do. — Te4022P_ - [a step counter i Lit | ! 100 Apo; Tensor naa EoD AF i 10/1000 iA 5161170] — do. — 2SA561 2 | i 10/1000 1¢_02'5850] — do. — 280458 = I 91000: ps0 70) = do, — 750800 z 1000 0 62536 10) — a. 250295 ‘i i i i 1 I re 25K te 7 [Diode N34, #4 t= * 1 =.= 1165 = | = a0. — 1171 = r i foi000 iH (0901 20|— do, — sone = [posses en i [01010016 = 0. 1000.4 = = etme [ “HO!10;00!iH |00!05!90] — do. — 108-1 2 le 060) Gao1 70 Zeer Oia w2268A Pear cena [ = o.= WZiE0 z i =o 022758 a TOGO) (6005 Goligh Enined Onde SLED RETF !¢8-30/8/ 1001~ fe] rene Description @ & &) emis | SP |a0'10190, 1% [o0}01; 10] Phovo Coupler Pses-cso2os | 7 4 97> — 1 | Histoire pommatenmer mer | apacrasoe t i H I io{T0}00| FC 084 70| Myler Capecicor ioov Oar | ee 9-aDFDe | (0.1000, F/08,71,00|Nonsolar Capacitor __16Y_10a 1 [11000 FP 1461100 Tonulum Gepschor —~25V4yF | DD DED FDD lwli0.00 FP 18169190) — go. — sev 0a | 2 'o[10.00 Fe 15'58}90) —— ao. — d0.~ 068F | = 14,1000, Hu 1951100] tel Film Rerinor O.% 1008 ~ fio 1010) Hu! 1918100, — do. — ae. 100KA : =0.— = 60. 160Ke = [o:toi0! H200,08 60) —— do. — de. — 28.94 Ka = 0, 10300 200108180] — ao. — = 60. — 158 Ke = t 101000! Hu 57'53,30] ——do.— so = 10.1000" Hu}S71591 10] __— do. — ec 5 k0{10(00 fu's7 61/00) — do. — Tao Ka = i lo 10,00! Hu 5762400] ——o.— a= 2Ke 1 =a. =e = SKA a | fco'10,00 5768120) — ao. =e =82KR i 10000 He 6717100] — eo. — To, 10Ke = 1 100,00, Hu 5771/20) — ao. — = ao eK) = t = 0. = Hao 2K = = do. — Tao Too Re (01100011 3128:70]Mewl oxde Fim Reinor IW Oca (|REaRR ER 1000) 41L3238.70) —— do, = aw 470 = ! (0 1000}H1 32.1100) — co. — ‘aw__100 a | lo 10)00ni (2090.00 Soh Restor “oa yoy FER { Ti { 510100; H7/37/01/50|Semni Variable Resistor 6-100 ¥ G2 HK [vexstnce | (010001HT's7}0r;20) __— do 2-200 = = do.— ln.10 00,47 37100110) co. — Bake : do.= 101000 'HT'37'09/20| do. — BAKA = =o. — (0 100.HT/37,01100] eo. — e50Ke z do. = 20. B:100K : = do. iofi0.00)4r a7 9v0| —— 0. — 200K I = = do= ko tonojnTis701f30| __— vo. — e-00K0 = = d0.= fi010'90,47 570140) — do, — e1ma = =do.= 1.100047 [140170 do. — 2Ko : ViBK ype laine ssiocso| — — vo. — B5Ka = 20066 es _|€5-30(8/2 1001~) fet] reno. Dereription @ & @) Remarks 71 MOOS NSS IT 7O| Varabe Reimar 610K 7k eee 5 41000 HS 1 0200) —— do. — ASO Ke . i 9 [a 10002210] — ao. ~ Soka ce z TO Foton 5 favo ws 2 BO] ao. 00 Ka a EXTLEVEL 140 101000 42{00'30| Side Variable Restor B10 KE 294 FARRAR Rotary Switch Scone 5-3 )-Swoem lad 1.00 KAS010,60] do. — contacts ome T 73 [ad 1600, A a0 03 6a Sige Switch Sonia 234 Few 3A t 7440 1000, KAA05, 70] — ao. — Deon ama 1 75 [ad 1000 A.4005,90) — do. — Seontacts TT T 76 eo! 10.001 «A70'09'50| Puan Switch Zoya 5 W |scostant t l210,00! Le 20108 60) Phone Jo MONO. Feyaes aw I [40,1010 L8'20:12'90] ao, — STEREO = aFba | t Ty T ‘83 [40!10(00| «8 00.02/20] Fuse 115A ea A [saan I 10, 10100} K8.00,07/40|— do. — miniature type 250V_1.6AT. = fomiaa 140,10.00; K8,00,15,90] —do.— Approved by UL 150V_1.5A - ‘others {5,40} 10(00, LB 60170 70) Connactor Tin 3323-7? |BowomEny '4010,00; LB €0'20.60) — do. — Opin = 0 P| 60. — t lsoi0,00: LB €0,10.60) — do, — api 7 Pee t lao!10,005 cs 60.20.90) — do, — 15 pin vs Pee i i t (a0;0,00' LB 60/15'00| Connector Zain SRO a— 7 P| Tooenn i '40'1000' LB #0. c3'00] — ao. — 13 pin - ae Fee I [40 100). 60:20.50| — go, — 15 pin = se [=e I a L ‘59 |40,10]00) 8 [10101 90| Connector Fin Baoe es {60 [40 10,0011.8160:14,10|Connector Housing 7 Pia 7P |40,10:00/u.8 6020.20] — do. — 10 Pin 0 ‘0}00| LB 6003/20) — do, — 19 Pin = BP T 110.0018 j60!20'20) _— do, — 15 Pin = 8 i imi T T 78 40 10160; 8 60{14100| Connector Housing __@Pin BP aR79-NI% | ADOCKT 79 0 1010/8 60/13/60] Connector Fin SP aa7F— | —co— 101000 |B [673,00] Connsetor Fin e > | =s0.—€8-30($/# 1001~) 2. Keyboard, Panel & Components (it@&RU'/\ 3/882) fet] partno. Description @® @ # Remarks |xas| 50 B77 (NGBOTERO |Kevourd Aaembiy [a Baer 1 7 [ [TT 37 90,1747 NOB 790] Sah As w Rie Fay ot 301146 N8}0:7790| — — do, — 2.380 = ! 32 0 100 CHT Tol whe Key GE a = | 090 c8)0117. 80] — a. — > t 1 [1 1000/8 01/1190| = do, — BE T * | it 0}00; 8.91700] — do. = $ = | T9000 Cera 0 do — a z t 01000 CB orf 70, —ao. = c : I 310000 co.o1'2 20] ck Key = = oI oo it 350000, ARE 3870 ey Sng or WH Key EDaFoeF 7 54 [801000] AADT/S880) —do.— for Black Key = tT , t | i | to "35 20/1000, C8 81/1290| Knob forSideVA | > OA I Lt 36 f0 1000. cB 5191 30|— eo. = tor Rotary VE - TI 37 fo 10b0 881190) eo, toro si z 7 3 fobs po. cs 0520) eo. tor Sie SW = 1 39 0/1000" C881 1290] do. — forsige VA a i thet | 77 0.1000; KA‘40 52150 Side Switch SE SW fetturrepioe | | cer 1600 HS 916740 | Varo Resor Aeokex? 8 ER W [vou | Wof10.00)HS a1 a9'00)_— ea — 50 Ka * wsiren I 240100 nS 20470) = oa. — wok | = ror e019 { 35 HO OO] HO:E2b0/0| Side Varsbia Rar Aan [ESTE Vf [romero Fol bd Hoe 050) oo. waka ease a treirs I | Tt 2E Hol v6.60 Fe wv wnat [ea = ee iohopo!x@'001'50|- ao. =e,— 05 AT 5 reed | Hato Ke 06 1080|— co. =o. = A oes i 1 (foio0! KB [00'02;10|— do. — 125V_ TAT - Japan iat Fuse Holder ea xan a T ho'1ob0'. 200590) = do. = in Rome Lt | 0100/18 2002/50] Voltage Selector ae ee [a5 |40!10100:GA'80 66 00|Power Transformer RRP > 2 [ea eerme 0200880200 Power Tesfomer Ui wl Conner 2 citer ree [Ro iojo0: Al i0105£0|Poner Switch Ro-a4o? eee Wolio‘0: KA! 0/05;60[" — do. — - others Pept I i #0 00; 001080] Sparc Suppressor Capachor eDV 000E rao] ATE= 7 FS = [Genel [a0 10,001FZ [00,07; = 40. — 425V_0.033 + 120) ~ [2romn. US Amecian [g0:10:00) FOjo2i44i70) _—do.— aileapacltor 830V 0.0872 = GENERAL, Aion Tit t [ ! 37 fo 190168 97 calm tor cova [SDE ooo = [ene [so 10 00'ca p1ir230] — do, — I 2 ‘amin Gn leo 10.00 ca 70620] do. — i 7 thers¢S-30(8/# 1001~} ret] Ro. Description 0 56,08 01,09 20| Spacer for ADC Cireit Board a7 30 101008 026710 55 11000 C8 09,65 40| Keyboare Stoppar [56 [30 10100 cB 0116460) 0: (30,1000, Aa 80,64 40| etal Fuse Holder Perret 3 Fuse Holder Was Percererread '49 10.00 AA 03.15.80) (9010.00, Aa 8072.60) (30:10 00.c8 81.09:70 (a0 10.00: aa 0-69.90 (6010001 tao 0100 (s0'10100| a 0'58 30 Same 30,1200, NB 2017500) "0100, AA 8020) ‘010/00, AA 20/5650) fa,10'00|ce es/or 0) Pitch Bend Assembly EyeADE Assy STRATE [0 10;00|aa'80'56 0) oo 9, 10'00.€5 300. 3 10400; €4 03 00.60 ale 2 00, €0'03 100) Round Head Wood Screw * {83 Ha10.00_ £4 03,000) as eh }4o!: 0300. £6 93'01}00| Oval Pan Head Screw 1401000166 03.000) es + a 10,001 Ea 02 600 7 [eo10,00' eA u2 00140 010100! £0 0911180) Round Head Wood Serew_ or 2ls| (0001 EA 03 0100] 10100) 432.6060)€8.30(8/¢ 1001 3. Cabinet (538888) fret] ewe, Description i & #) Remarks 1 poliono” ANOS a0| Rear Panel [oe = ew [om 000, AA8O's'90| — oo. — > ores 1000 AABOS9'00| — co. 2 ean 7 f0 1000] AASOSD Y0|conwel Panel Sp Re anam ana 3 1060, AA S600 Eo Bock Tig ae @ +10 1000, Aa 606060) — ao. — ro te) 3 Sie bond ai = | 6 == ihe a I 7 Botton Board = a t 3 1000 AA 608 70 Board Spacer [a 2 aa | i 7 81000, A666, 30| Fron Pana a = | oan - f i | 1 01100 Ec 33,0060) Tr ead Sew “wax [Poa sao I 1 0,100 EV 20,050 Fis Waser 35 [y= | 17 010,00, £10,040) Hexagonal Na ma ees I 73 }40;10100, EV41'00;40| Toothed Lock Wesher AAS [se # & & Te HOHODO EN S01 D0 Pen Head Sco ae ae t 15 f0|1000| EV 4.0030 Toothed Leck Wath RS ao @ @| i 16 0, 1000| £6 53.01 00| Oat Pon end Screw WET BRT ANEY T a [Gaff Nut with Frange Wx VRAREF 7 F [ 8 [Oval Sind Head Screw MAK 16 BER YZ RGRY I =d0.— wa t0 1 * Bind Hood Tapping Scien Wa x25 =do.= Max Foun Head Wood Sew W110 (Oval Pan Hebd Sew W'x20 "Toothed Lock Washer ABS Bird Head Tapping Screw M3 x6 =e. — Maxe 5400, 801270 Valing Rubber lao 10:00} £0/33'51/30| Round Hexa Wood Serew 5x 18 88 ]8]2)8]2 3]8)513| Flat Washer 5