Roland SH-3A Page 4 Service Notes Download | Manualshive

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Summary of Contents for SH-3A

Page 1: ...ELECTRONIC MUSICAL INSTRUMENT ROLAND SYNTHESIZER SH 3A A THE 5th EDITION Printed in Japan 76 Apr APPLIED FROM SERIAL No 270800...

Page 2: ...PACK No 8 ASSEMBLY 12 4 3 PACK No 4 ASSEMBLY 12 5 VCF VCA CIRCUIT 13 5 1 VCF VCA BOARD ASSEMBLY OP 1OB 13 6 POWER SUPPLY CIRCUIT 17 6 1 POWER SUPPLY BOARD ASSEMBLY PS 12C 17 7 ADJUSTMENT 18 7 1 PREPAR...

Page 3: ...ntrolled Filter Filter Resonance Control CUTOFF FREQ 1 RESONANCE 1 Modulation Waveform Selector Ns fLJ If j 1 Modulation Depth Control GROWL 1 Envelope Selector ADSR 1 a_ 1 Envelope Sensitibity Contro...

Page 4: ...1005mm 40 2 D 5 320mm 12 8 H 150mm 6 0 14 5 Kg 32 Lbs Music Rack Conection Cord 2 5m with Pin Plug Adaptor Volume Control Pedal FV 1 for controlling Sound Volume VCO GLIDE effect or VCF CUTOFP PREQUEN...

Page 5: ...2 GENERAL CIRCUIT BLOCK DIAGRAM...

Page 6: ...3 CONTROL CIRCUIT 3 1 Control Circuit Block Diagram VCO FULSE BOARD Of tO VCP VCA BOAPJ 5...

Page 7: ...3 2 FILTER BOARD ASSEMBLY FL 5 Serial mimber XX254 9 and below A Parts Layout EVA QOAAOOA14 MR OKA ZKW 0kA m 6...

Page 8: ...3 2 FILTER HOARD ASSEMBLY FL 5 Serial number XX2550 and above A Parts Layout Tr US 2473 SV t toK A EVA QOAAO0A 4 6 1...

Page 9: ...3 2 KILTER BOARD ASSEMBLY FL5 Serial number XX2550 and above A Parts Layout 6 2...

Page 10: ...3 3 PACK Na7fi ASSEMBLY Serial Nwniter XX2549 ami below A I ar I s Layout 5s 1HI DID B Circuit Diagram Pack No 7B r 9 LFO 2 W j C4fZ 4 7M iook im ok yor rm W7 OK LFO i7WP I lffil 7 ru J LFO Z...

Page 11: ...LY OP 9A Serial Number XX2399 ami below A Part 8 Lavout o o o o o oooool 01 0 o o o o o o o o o o o o o o o o o o oo If 14 H W 1 6 I Tantafuwe Capacitor P l Capacitor o o p o o o o p p o o o P o o P p...

Page 12: ...4 VCO CIIU TIT 4 1 VCO ITL2SK BOARD ASSEMBLY Serial Numbers XX2400 XX2549 inrhmiw A I air I s I avuii t IS H o T rfca um Film CupicH o laooooolooo 0 o o o o o o o o o I A IS A a I f t I o P S247J 8 1...

Page 13: ...BOABD S BLY OMU A Parts Layout loooooooooo O Sb S3 it fT o o o o o o o o o o MS o o o o o o o o jo o o o o o o oj o oloooo o o o o oo o oo o o o olo o o o b o o o o o o o o o Q CiptC tor NI3T2 0 ISJ47...

Page 14: ...o o o p o retytic B Circuit Diagram 0P 9A Serial Number XX2399 and below _ _ _ n _ _ ______ __ _P_J _ ___ NOTE i UNLESS OTHERWISE SPECIFIED ALL NFN TRANSISTORS 2SC945 ALL PHP TRANSISTORS 2SA733 ALL DI...

Page 15: ...I 0 T 6 09901 eaaoza ti SHOLSISKVttL dfid TIT SHOiSISSVHi RdB TIT asiMHaHio seauui i JLrgWD ii nyi i l tW X DTJ 2N J Vim W3 M en 6 r S C r 8U 71 01 i pun OOPZXX V6 JO OhiO...

Page 16: ...C Hear tiiiJr purls layuiil l l 9A Serial Number XX25 I9 iirul hrl 120X240 O52 99OA...

Page 17: ...4 2 PACK No 8 ASSEMBLY A Parts Layout C Circuit Diagram PACK No 8 1 2 3 B Rear oido PACK No 8 D i 1S2473 4 3 PACK No 4 ASSEMBLY A Parts Layout B Cirouit Diagram PACK No 4 2 t 7 S i 132473 12...

Page 18: ......

Page 19: ...purls liiyi P On Seri Serial Number XX2549 im Ibrl iw I i w i v N i 1 r I jf v j j 5 V o L _J 14...

Page 20: ...5 VCFVCA CimTIT 5 1 VCF IJUAIII ASSEMBLY OP 10H Serial NhiiiIht XX2 55 0 VX3049 in lnsivp A Parts Layout it uu 47 22O fg Q5H 14 1...

Page 21: ...A Purls Layout XX30S0 czsz Z C oooQfr fPT OfJ 14 2...

Page 22: ...C Circuit diagram 0P 1QB Serial NiiMber XX254 9 and below OOTWIBA wnvn T EMdLO M0FF FttQ 15 16...

Page 23: ...C Circuit diagram OP 10B Serial Numbers XX2550 XX3049 inclusive ourm IWFUWWl IMil ill ki S t4J m k mT t j 1 V 15 16 1...

Page 24: ...C Circuit diagram OP 10B Serial Number X X3050 and above FL ourm ffts 15 16 2...

Page 25: ...6 POWER SUPPLY CIHCUIT 6 1 POWER SUPPLY BOARD ASSEMBLY PS 12C A Parts Layout A Z40Z 8 JH zm Trtol Z904M O B Power Supply Circuit Diagram PC 2B C auu PiMM H Cowi Wm 17...

Page 26: ...and tune its frequency to 1396 9Hz by VR1O1 5 Repeat steps 3 and 4 6 Check the frequency of the F2 349 23H and the F3 69ti 46Hz 7 Check the following effects a PORTAMENTO ON OFF b GLIDE Button and GLI...

Page 27: ...tave difference between F2 and F3 3 Setting CUTOFF FREQ 0 Depressing the C4 key adjust VR254 PREQ ADJ to set its frequency at 348Hz 4 Stepping 2 affects one octave difference between F2 and F3 so repe...

Page 28: ...7 9 NOISE Adjustment Connect the scope to the 91st on OF 1OB Adjust VE259 NOISE so as to get the NOISE output may reach 4Vp p 4Vp p 20...

Page 29: ...021 016 003 063 001 001 018 OOI O64 OOI O65 001 049 009 001 009 002 121 005 O68 OO5 042 009 120 007 CHASSIS ASSEMBLY Filter Board Assembly VCO Pulse Board Assembly VCF VCA Board Assembly VIB Pack N0 7...

Page 30: ...Connector Wafer Pin It SPC 1 No 75C 100 120V No 75D 220 250V C3M No 11 R 5 No 31 2L 4P 1A 2145 4C LCBS 4N No 18 No 8 No 4 A2461 4C 6C 8C OTHERS 001 057 001 054 001 055 OOI O56 008 024 012 003 020 015...

Page 31: ...3300ohm 4700ohra 5600ohm 6800ohm 8200ohra 10 Kohm 12 Kohm 15 Kohra 18 Kohm 22 Kohm 33 Kohm 47 Kohm 56 Kohm 68 Kohm lOOKohm 150Kohm 220Kohm 330Kohm 470Kohra 680Kohm Mohm 5Mohm 044 098 Carbon Solid Res...

Page 32: ...CE A50V1 ECE A25V4 7 ECE A16V10 ECE A6 3V33 ECE A16V47 ECE A16V100 ECE A16Y1000 iMUW ECE A25V1OOO 470 pfd 50V V Type 10 or ZVfc lOOOpfd 2200pfd 47OOpfd 8200pfd 01 mfd 015mfd 022mfd O47mfd Ceramic Capa...

Page 33: ...em shown below before qjkremeritfi itih Po teiitibmeter i mtteMcntim TK 1114 f TK 1114A for Rota vry SW K Serial Number XXX8OO XX949 XX16OO XX1829 XX16OO XX1829 XX1 30 OP 1OB SH 3A is not interohanffa...

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