Yamaha CS-30, Service Manual

Page 1: ...CC830 77 12 1 5K 5S5322 f v fV t A 14 ...

Page 2: ...1 VCA Circuit Board Wiring VCA 1 50 12 SEQ Ciruit Diagram SEQv 1 0 13 SEQ Circuit Board Wiring SEQ 1 50 14 LFO Circuit Diagram LFO 10 15 LFO Circuit Board Wiring CFO 1 50 16 PRA Circuit Diagram PRA 10 17 PRA Circuit Board Wiring PRA 1 50 18 ADC Circuit Diagram ADCx 10 19 ADC Circuit Board Wiring ADC 1 50 19 KEY SWITCH Circuit Diagram 10 20 PN3 Cricuit Diagram PN3 10 20 REAR PANEL Circuit Diagram 9...

Page 3: ...itter C Collector B Base S Source G Gate D Drain Capacitor lh Electrolytic capacitor Polarity Amark Tantalum capacitor NP mark Nompolar capacitor Myler Ceramic and Polystyrene Capacitor Diode Zener Diode ABBREVIATIONS OF WIRE COLOR IN ELECTONE Switch OB OT OM B Break T Transfer M Make BLACK BL BROWN BR RED RE ORANGE OR YELLOW YE GREEN GR BLUE BE VIOLET VI GRAY GY WHITE WH GRASS GREEN GG SKY BLUE S...

Page 4: ...ently W 9 ls TTSt o Removal of Keyboard After removing the panel pulling out the screws as shown above permits rotating the keyboard Removal of Circuit Boards h 7 WL Take the circuit boards away gently from the panel removing each volume knob and hexagonal nut without any damage or scratch on the panel A fri Mca J 0 A WO A UTTSt 2 ...

Page 5: ...RMAL SINGLE MULTI SEQUENCER CLOCK SPEED 0 1 30Hz STEP 1 to 8 NORMAL KBD CLOCK MANUAL MANUAL START or STOP HOLD PITCH 1 to 8 EG TRIGGER KBD SEQ EXT EG TIME NORM AL TIMEx5 EG 1 IL 0 5 AL 0 5 AT 1msec Isec DT 10msec 10sec RT 10msec lOsec EG2 3 AT 1msec 1sec DT 10msec 10sec SL 0 10 RT 10msec 10sec LFO EG FUNCTION DEPTH SPEED 0 1 100Hz EXTERNAL Sensitivity 0 20 dBm TRIGGER LEVEL Trigger ON at 60mVp p M...

Page 6: ... 8 UAl CLOCK SPEED SUM HOLD SlOf STEP PITCH EG 1 EG 2 EG 3 WO NO Ml QJS n 0 1 UT srr 1 1 LJ 4 n o ui m i i tun s ai INITIAL ATTACK ATTACK OECAY HillASE LEVEL LEVEL TIME TIME TIME ATIALX DECAY SUS1AIN RELEASl TIME TIME LEVEL TIME ATTACK DECAY SUSIAIN RELEASE TIME TIME LEVEL TIME ...

Page 7: ...ezooS z CS 30 S 1001 Circuit Diagram ICI YM240OO C2 TC4049P IC3 4 6 0 TA7504S IC5 TA7505M IC7 NJM4550DN Tf 1 4 2SA56I Tr2 3 2SC450 Diode DI D4 ISI555 ZDI 2 02Z75A 0mork 1 mark 5 0 1 5 KEC 90106 77A ...

Page 8: ...100 16 G OI 1C ICI IC2 103 4 6 IC5 IC7 Transisi Trl 4 Tr2 3 Resistoi Diode ZD1 2 D1 4 Semi va V8K4 1 ...

Page 9: ...0 PVR5 10 0Jo ivcF n i CD 3 O VCF M 0 1 P o VCF a2 i 2 0 VCF N2 D 12 JK J7 2 SEQ VOLT PK VCF EX3KD 14 JK SW1 T s EXTERNAL VCF S H D 10 LFO S H fi 10 LFO 011 0 10 VCF NM 4 LF0 N 8 0 15 15 EKO HOO C lO I IEG DEPTH 1 EG SELECTOR PVR3 LF0 A fl 5 BR LF0 C 3 ORr 2 VCF C B SSK EGKD 12 KFC 00107 78A ...

Page 10: ... Input for the comparator Input of the wave shape J J is provided from the pm no 14 TO 13 Iref Input of the standard electronic current 14 TO Output from time constant circuit The following wave shape is produced 15 VIB Input for vibrato control wave 16 Vcc 15V input power source WSC 1C IG00158 1 Vcc 2 SIO 3 TO 4 SL 15V input power source Output of the sine wave Output of triangular wave AA A p In...

Page 11: ...in for determination of the cut off frequency Hi pass output 6dB OCT The output of higher fre quencies are produced Input of feed back The input signal for determination of cut off frequency Explanation for 1C I CttW VCF Circuit Diagram VCO KF1 ua 2 GG_ vCQ kf ofQ 5 FII FIO input PSWI I 1 VR2 eiooK VCF I vco MKD 6 BR _ N I i vco aiK3 7 i 0 So LFO NiKD n VCF EXT fS 12 o VC0 EXT ft 7 i r s 22 OK TP4...

Page 12: ...and 10V is provided and the first decay time is controlled from 10mS until 10 S IDT 11 RT Input of buffer voltage for determi nation of the release time Input of the voltage between zero V to 10V is provided and the time from KEY ON until release is con trolled from 10m second until 10 second KEY OFF 12 TC Output of the time control Output of DC voltage is produced so that the each time of attack ...

Page 13: ...ut of level control voltage Input of the control voltage i pro vided for linear change of the level Input LI wave 0 dB out 3 IN Input Input of the level modulated signal is provided shape INPUT OUTPUT 4 IN Negative feed back Normally unused 5 Vee 15V input power source 6 Vcc 15V input power source 7 GND Earth 8 OUT Output Output Wave Shape Output of the following wave shape is produced ii KEC 9010...

Page 14: ...age between zero V and 10V is provided and the attack time is controlled from 1 mS until IS k ATM 10 IDT Input of buffer voltage for determi nation of decay time Input of the voltage between zero V and 10V is provided and the decay time is controlled from 10 m second until 10 second 11 2DT Input of buffer voltage for determi nation of release time Input of the voltage between zero V and 10V is pro...

Page 15: ...tt Trigger 4f vi rI iMl iiVINI ti TLJI ITil iTJ eircHel l PVR2 PVR3 PVR4 IPVR3 PVR6 PVR7 PVR8 PVR9 IC3 I5 pinl4 GNO pin 7 PSWII KV 2V JK J5 2 KEY VOLT IN LF0 LTR 3 7 JK J3 2 Trigger IN PSW2 U2 RE LFT Invertor A _ J jk o QLleo O T n LEO r PVRI2 PVRI3 Envelope Genelotor 2 mm PVHI4 Tf 2 Driver 0 r it 1 MM u Hifcl PVRI7 Invertor TP4 5 mm Tf 29 lLEDIO PVRI3 Envelope Genelotor 3 ill il PVR2I it CH 4 7 i...

Page 16: ...he printed pattern side of the circuit board m b H K T t o Note 1 1C 2 Transistor IC1 IG00150 Tr6 17 2SA561 IC2 TC4069P other 2SC458 IC3 TC4011P 3 FET 2SK30A IC4 TC4022P 4 Diode K IC5 6 TC4016P D 1S1555 IC8 TA7504M 5 LED K IC9 11 IG00151 SLP1328 IC12 IG00152 IC13 14 IG00159 IC15 16 NJM4558 IC7 TA7505M 14 KEP NA 80293 78 A ...

Page 17: ...CS 30 S 1001 LFO Circuit Diagram PITCH BEND PVR7 PVR6 PORTAMENfol PVR5 1 1 1 C i a C Cl I f 1 1 SSK P0 CD 2 AMP External Trigger SE ETR fD 13 15 KEC 90112 78 A ...

Page 18: ...age supplied VC1 Input of the voltage 0 10V is provided Earth Capacitor for determination of the frequency 15V input power source 15V input power source Output of sine wave zsz 3 20Vpp Output of sawtooth wave 3 5Vpp Setting for standard electric current Note 1 1C IC1 IG00150 IC5 BA634 IC9 HA1452 IC2 4 6 8 NJM4558 2 Transistor h 7 9 Trl 9 11 12 14 15 17 20 2SC458 Tr10 13 16 18 19 2SA561 3 Diode 5 K...

Page 19: ...CS 30 S 1001 PN3 VA2A 2 Volume PN3 VR2B 2 Volume PRA Circuit Diagram Pre Amp I 15 JK J8 4 Foot Controller 17 KEC 90110 78 A ...

Page 20: ...T W 0S3S83J AHAMAY Note 1 1C IC1 2 HA1452 2 Transistor Y 7 Trl 5 6 2SC458 Tr2 9 2SD235 Tr3 7 2SA561 Tr4 8 2SA490 3 Diode 4 X V D1 13 1S1555 4 Semi Variable Resistor VR1 2 V8K 4 1 5 Metal oxide film resistor marks mm KEP NA80292 78A ...

Page 21: ...P s CS 30 S 1001 ...

Page 22: ...MNK K ...

Page 23: ...I 7 SEQ KTR D 12 WHX2 SSK KTR 2 LF0 KTR D 3 BL12 LV12ilSEQ KV 0 8 VI VC0 KV 10 1 SSK KV 1 SSKEK 7 SEQ TR 5 SEQ Q0 4 VC0 SEQ CD 3 VCA EXP G 5 VII2 JK SW2 T1 High Low PRA X 14 VCA G 14 JK SW2 T2 High Low VCA G10 13 JK SW2 T3 High Low 21 KEP NA80295 78 A ...

Page 24: ...nor abnormal voltage Make sure that the regulator s response to load fluctuation is within 50m sec When connecting Mylar capacitors of 0 47 iF across each terminal and the E terminal make sure that neither oscillation nor abnormal voltage is generated and the response time is within 50m sec 4 First Stage Voltage and Output Voltage When load is fully applied the output voltage fluctuation should be...

Page 25: ... PB terminal 4 Key Voltage Modulator Circuit a Set the PITCH BEND knob to 0 position then adjust VR 5 so that 2 000V is obtained at CP7 b Adjust the TUNE knob until 0 000V is present at TU 10 terminal Set the EG DEPTH knob in PITCH Section to 0 position then adjust VR 3 so that 2 000V is obtained at CP8 5 Key Voltage Generator Circuit a Press F2 key and adjust VR 7 so that 250 0 2mV is obtained at...

Page 26: ...l output is as shown in the figure OFF C key _ ON 1 ON C 5key i1 1 ON 1 1 on 1 Trigger Mode j 1 1 1 SINGLE MULTI 1 1 1 1 KTR ON on 1 ON 1 During SINGLE Mode as long as a key remains depressed operating other keys has no effect on the KTR which is kept ON During MULTI Mode depressing keys V successively permits KTR to turn ON _ v one after another with priority given to higher tones 24 ...

Page 27: ...at the time there is 2 000V at KV terminal When CP2 is set at 2 000V by DE TUNE volume make sure that there is 2 000V at IC6 7 second pin and also is 166 8mV at IC6 7 second pin when F2 key is ON 4 Voltage Control Oscillator Circuit 1 VCOI Wave Shape Convertor Circuit 1 WSC1 a Set both VCOI and VC02 SEQ KBD switches to KBD side MOD DEPTH PVR9 10 are 10 FEET 1 PSW2 at 2 and turn the TUNE PVR1 volum...

Page 28: ...age Then when PWM 1 PVR7 is return ed to 0 then when PW1 PVR5 is 90 the PL 1 waveform duty voltage is 90 9 10 90 1 6V 90 1 6V o Note Inverted wave is fed out from the rear panel OUTPUT When 1 6V input When 1 6V input When PW1 is 90 6 Voltage Control Oscillator Circuit 2 VC02 Wave Convertor Circuit 2 WSC2 a As in 4 a set FEET 2 PSW3 to 4 With the C6 key ON KV terminal 2 000V adjust VR 8 for 4215Hz ...

Page 29: ...at 10 the n 2 terminal 4 receives 90 10 9 duty voltage Then when PWM2 is returned to 0 and PW2 PVR6 is at 90 the f L 2 waveform duty voltage is 90 9 Note Inverted wave is fed out from the rear panel OUTPUT When 1 5V input When 1 6V input When PW2 is 90 8 FM Modulation Circuit a Set the MOD VC02 PVR4 to 10 Then when the C6 key is switched ON KV terminal 2 0 001 V adjust VR 6 at TP1 for a value acco...

Page 30: ... 0 1V turn the B2 key ON When the KBD FOLLOW PVR3 is used to set for 500mV at the second pin of ICi the LP1 level should peak d Return the settings to the 2 a b condition When the MOD FUNCTION PSW4 is set to f J and MOD DEPTH PVR9 to 10 check the cutoff frequency by listening to the sound according to the input f J wave e Set EG1 3 to any position and EG DEPTH PVR11 to approximately center positio...

Page 31: ...und according to the input f J wave e Set EG1 3 to any position and EG DEPTH PVR12 to approximately center position Peak fre quency should vary according to the EG waveform when the EG SELECTOR PSW12 is switched from A to E 3 KBD FOLLOW Circuit a When the F2 key is ON with 166 8mV present at the KV T 7 terminal adjust VR 7 so that OmV is present at TP1 b With the KBD FOLLOW PVR3 set to 0 adjust vr...

Page 32: ... minimum when a 100Hz 3Vp p wave is added to the f J 2 2 terminal 2 Voltage Control Amplifier Circuit No 2 VCA2 a Set the MOD DEPTH PVR5 to 0 MOD FUNCTION PSW8 to f and the HOLD EG switch PSW6 to HOLD When VR 6 is set to approximately its middle position adjust VR 5 so that 3 0 1V is present at TP3 Then set each of the EG1 3 sliders to either 0 or S and adjust VR6 so that 200 lOmV is present at TP...

Page 33: ...ection SPEED to F Adjust VR9 so that the TP5 signal is minimum when a 100Hz 3Vp p waveform is added to the f J 2 terminal b After the above adjustments are made return the KBD SEQ switch of the VCO section to KBD and set the VC02 FEET to 4 With the G key ON i e with a IKHz 3V waveform added to the HP2 CD 11 terminal the waveform shown below should appear at TP5 If the waveform is unbalanced take i...

Page 34: ... START STOP button is depressed and will start from step 1 immediately after the switch is turned ON again When CLOCK MANUAL switch PSW10 is turned to MANUAL position the timing step will be halted and it should be shifted step by step turning the START STOP button ON and OFF alter nately C Pitch Circuit After turning the switches as mentioned in paragraph A a rotate each PITCH volume from 1 to 8 ...

Page 35: ...e TP3 voltage level to 8 0 1V and adjust VR 8 again to 4 O lmS Repeat this adjustment until T becomes 125 5mS when 3 0 1 V is applied to TP3 c The inverse waveform of terminal A output should be obtained at terminal B 3 3 Confirm that the above T is multiplied by 3 3 to 6 1 when NORMAL TIME x 5 switch PSW7 is in TIME x 5 position Also make sure that LED indicator LE9 glows when the key is ON B EG2...

Page 36: ... 2V appears in TP5 Adjust VRl2l so that the above rising curve is obtained from terminal E 3 5 with 4 0 1 mS of T when the key is ON 7V is applied to terminal TR y 5 Also adjust VRllj so that the voltage is levelled off at 0 0 01V 5 seconds or later after the key is turned ON b Turn ATTACK TIME lever until 3 0 1V appears in TP5 Adjust VR13 to lengthen T when it exceeds 125mS or to shorten it when ...

Page 37: ...ould be obtained at terminals 3 8 X 7 J 3 9 and L 4 1 respectively b When LFO NORMAL switch on TRIGGER is turned to LFO 0V at terminal N 4 2 and the key is turned ON 7V is applied to terminal KTR 4 3 the waveform shown in Fig 5 should be obtained at terminal O T 3 10 and its frequency should be one half cycle time is two times that of LFO oscillator T 14 1 V Fig 5 3 Trigger Circuit Terminal LTR C ...

Page 38: ...key C4 is turned ON 1053Hz output Now connect OUTPUT 1 to EXTERNAL IN by using a guitar lead 20mV 1053Hz is applied to terminal ESI 7 b After the completion of the setting mentioned in paragraph 5 a 120mV output should be obtained at terminal 0 5 when SIGNAL LEVEL PVR4 is turned to 10 Also 1 25V output should be presented at terminal 20 I D 3 6 EXT Trigger Circuit In addition to the same setting a...

Page 39: ...2H 2 2 and 50mV output from 1 2L CD IS terminals 2 Headphone Amplifier Circuit When a set of headphones 8 ohm is connected to the PHONES jack on PN3 250mV output should be obtained from terminals HR 2 13 and HL 12 3 Initial Clear Circuit Connect either a set of headpnones or a guitar amplifier turn the key ON and make sure that a sound is produced Turn the main switch OFF and then turn it ON after...

Page 40: ...YAMAHA combo synthesizer CS 30 PARTS LIST INDEX a Circuit Boards Components y h tfy bSPS 2 Keyboard Panel Components t 4 SPQDp 5 Cabinet SA 7 ...

Page 41: ......

Page 42: ...2610 PRA do 82620 SEQ do 82630 LFO do 82641 JK do 82650 ADC do 82640 do do do S S K Remarks pEE BIBS oiioioo iG 00 17120 oiioioo iG 02 55 00 ojiojoo iG 02i56i00 do 102 75 00 do YM24800 HA1452 TC4011 TC4049 NJM4558 IGOO150 IG00151 I GO0152 IG00153 IG00156 IG00158 IGOO159 BA634 pA796HC TC4016P TC4069P TA7504S TA7505 TC4022P OjlOjOOiiC 04 58 50 Transistor 2SA490 do 2SA561 do 2SC458 do 2SC509 do 2SD23...

Page 43: ... 00 Hu 19 81 40 10 00 Hu 57 72 20 Metal Film Resistor 0 1 100 Q do do 1 Kfi do do 2 Kn do do 5 Kn do do io Kn do do 20 Kn do do 40 Kn do do 80 Kn do do ioo Kn do do 160 Kn do do 29 94 Kn do do 1 684 Kn do 1 330n do do 9ion do do i Kn i do do 2 Kn do do 5 1 Kn do do 8 2 Kn do do io Kn do do 18 Kn do do 22 Kn do do ioo Kn 40i10 00 HL 32 34 70 Metal oxide Film Resistor 1W do do 0 47n 4 7fi ion Solid ...

Page 44: ...ontacts KSW 3 ft A 2 A 3 8 6 Push Switch 7 v s s W SEQ START Phone Jack MONO do STEREO X Fuse 125 V 1 5A do miniature type 250V 1 6 AT do Approved by UL 150V 1 5 A Connector LB 60 20 80 do 40 10iOOi LB 60ll9 60 do 60120 90 do 7 pin 10 pin 13 pin 15 pin European British North European others 10 p 13 p 15 p 40 10jOO LB 60 15 00 Connector 40j 10 00 LB 160 03100 do 1 1 v 40il0i00 LBi60i20 6 do 7 pin 1...

Page 45: ...riable Resistor 0j10 00 HQ 42 00 50 do A 50 Kn x 2 C 50 Kn W 50 Kfi A 2MO MN 10 Kn J S ft IK h 7 K V R VOLUME LIMITTER PITCH BEND PORTAMENTO BALANCE 28 40h0i00j KB 00j06 60 Fuse 0110 00 j KBiOOil 1 5 OilOjOOl KB 100 10 60 do OilOjOO KB 100 02110 do 250V 400 m AT do 0 5 AT do 1 A 125 V 1 AT Australian others Japan ohobo LB 20104 90 ohobo LB 20 05 90 ka X British North European 0 si0 00 LB 20 02 501...

Page 46: ...3 30ho oo 48 4 iHiiini il NB 80 75 90 Pitch Bend Assembly AAi80 56j20 Lever AA 80 56i50 Coil Spring CB 81 0l 40 Bush Ass y ji z 7 v 80 40 io 00 81 Uoiioiooi 82 40 10 00 83 l40 10 EB 03 00 50 EA 03 00 60 EQ 03 11 00 84 85 40 86 Uoiioiooi 87 Uoiioiooi 88 40 10 00 89 40h0i00 91 Flat Head Screw Pan Head Screw Round Head Wood Screw Pan Head Screw Oval Pan Head Screw EG 03i00 50 do E A 02 60 60 Pan Head...

Page 47: ...3i01 iOO EW 03 00 80 S3 J322E12EIE 22 40 10 OOj 23 40 1 OiOOj 24 40 10 00 26 40110 lOO j 58 30154 jOO 90 kojlOiOO 92 40jl0 00 EQ 33il IjOO EG 05 02j00 EV j41 00 50 Ei 03 00 8 4 I CB 80il2 70 EQ 33 51 30 EV 20 00 40 Truss Head Screw Flat Washer Hexagonal Nut Toothed Lock Washer Pan Head Screw Toothed Lock Washer Oval Pan Head Screw Gaff Nut with Frange Oval Bind Head Screw do Bind Head Tapping Scre...