Pioneer SG-300, Service Manual

Page 1: ...s equivalent to an inductance and a resistance connected in series Any required re sonant frequency can be obtained by changing the inductance and capacitance of the seriesresonance circuit by varying CL C2 Rg and R4 ith the SG 300 7 equalizer elements ith different resonance frequencies are included in one EQ AMP and each frequency segmentcan be adjusted independently The frequency response of ea...

Page 2: ...nited Kingdom model WP 2æV 24oV Australia model 1 2 3 4 5 6 SPECIFICATIONS BLOCKDIAGRAM FRONTPANELFACILITIES CIRCUITDESCRIPTIONS PARTS LOCATION EXPLODEDVIEWS T P A C K N G r 1 0 8 P C B O A R D S C O N N E C T I O N D I A G R A M 1 1 9 SCHEMATIC DIAGRAM 13 10 PARTSLIST 15 11 FOR R R G TYPES 16 2 2 3 4 6 I PICINEEFI ELECTFICINIC CCIFIPCIFIATICIN 4 1 Mesuno 1 chome Mesuno ku Tokyo 1s3 Japan U B FlCr...

Page 3: ... swrrcH Whenthis switchisdepressed the equalized signal goes to the tape deck connectedto the rear panel TAPE termi nals This permitsyou to recordthe equalized signalwhile monitoringit at the sametime In the OFF position the signalgoesto the tape deck in its original unequalized statesoyou can recordthe unalteredsignalwhile listening to the equalizedsignal if the EOUALIZER ON OFF switch isON NOTE ...

Page 4: ...e r R e q u i r e m e n t s ACl20 60H2 P o w e r C o n s u m p t i o n 1 0 W Dimensions 420 W x 92 H x 240 D mm 16 9 16 W x 3 5 8 H x 9 7116 D in Weight without package 3kS 6 lb 10oz Furnished Parts Connectioncord with Pin Plugs Operati ng Instructions NOTE Specificationsand the design subiect to possiblemodification without notice due to improvements I 2 1 L C H I I ou FORSLIDEVOLUME KNOBLED I 2 ...

Page 5: ... Mark Part No Symbol Description r RESISTORS Nofe When ordering resisfors conuert the resistance wlue into code form and then rewrite the part no as before Mark Part No Symbol Dercription GWK 178 AWX 211 OTHERS Part No AF assembly VR assembly Symbol Description RD PMtrtrtr J SEMICONDUCTORS Part No R1 R79 Symbol Description A ATT 806 AEL 365 a AKPo38 A ADG s2 Power transformer LED AC socket AC powe...

Page 6: ...01 AC150Vl 11 FOR R R G TYPES Model SG 3æ R R G typesarethe same asthe SG 300KU with the exceptionof followingsections CONTRASTOF MISCELLANEOUS PARTS POWER SUPPLY CIRCUITFOR R R G MODELS LINE VOLTAGE SELECÎOR llO l2OV 22O 24OY Mark Symbol Description Part No Remarks KU typo R R Gtyps A Â A Tl Powerlransformer AC powerc ord 53 Lin rroltage selector Packingcase Operatinginstructions ATT 06 ADG 52 AT...

Page 7: ...catesthe rm ponanceof the safetyfactorot the pa Therefore when replacing be re to usepartsof rdenticat desrgnôtion This is the basic hemalic diagram but lhe actualcircuit may vary due to improvementsin design A F A s s y G w K 1 7 I 4OO Hz i i i I V R I 7 I F R E q U E N C Y a c x o o 8 6 i H t r a y a M P E U F F E R A M f B U F F E R A M P rol50 Rt3 560 Q 4 r 7 z S C r 8 r 5 E Q U Â L I Z E R A ...

Page 8: ...i ll5ohÂl L c h l r R E c L TAPE L PLAY F TAPE I r _ R c h l r r E e L PLAY REC oul I N qra r9 2so313 Q20 2SA733A Q 2 l 2 4 2 S C l 8 l 5 QIg 22 REGULATOR D r 4 t o E 2 D5 6 KZL120 0 7 t z r s t 5 5 5 l I r l r l i r l l L L 20 jtv AEL 36 5 P O W E R I 3 sr Fz I f l sr r_s AUFFER ÂltlP Q23 24 L E D O R I V E L _ ...

Page 9: ...o O ription 1 ARB419 2 AHA 290 3 AHD 931 ADE q s Operating instructions Side pad Packing cæe Connection cord ExternalAppearance of Transistors and lCs M5218L æc945A 25A733A NJM4558DX 2541115 2SCt8t5 2SC1919 2SO313 2SD880 ...

Page 10: ...FMC 5 AEL 365 6 AWX 21 1 7 AKPO38 8 GWK I78 9 BBT3OPOSOFZK 10 MTZ3oP100FZK 11 AEC 327 12 ADG 52 Screrru Pounr transformer LED Scæw LED D13I VR as çembly AC socket AF æsembly Screw Screw Strain rclief A Cporar cord Sideframe L Switch mountingpl8te LED socket Front stay LED holder Centerframe SideframeR Rearpanel Switchassembly Powqrwvitchassembly A ...

Page 11: ...4 l5 QZO9 Qil Ql3 Or5 Ot7 UNSWI TCHED IOOW MAX voLUMEAssl AWX 2ll l oôæit ù i Ë I 4 a ri2 i g iæ t F l li l i POWER SWITCH Ass y L J ...

Page 12: ...I DIAGRAM BOARDS CONNECTION VOLUltf AssYAWX 2lt SWIÎCH Assï l v AF Ass Y GWK 178 ...

Page 13: ... 2 AHA 290 3 AHD 931 ADE x s Operating instructions Side pad Packing case Connection cord ExternalAppearance of Transistors and lcs Lot No hFE M5218L 2SC945A 2SA733A Suttit NJM4558DX 5 A nn44 ûeû f B 2SAr 115 2SC181 5 2SC1919 2SD31 3 25D880 ...

Page 14: ...4 PMZ30P060FMC 5 AEL 365 6 AWX 211 7 AKPO38 8 GWK I78 9 BBT3OPOSOFZK 10 MIZæP1æFZK 11 AÉC 327 12 ADGOs2 Screw Powertransformer LED Scrcw LED ID13 VR assembly AC socket AF æsembly Screw Screw Strainælief AC poruercord Sideframe L Switch mountingplæe LED socket Front itay LED holder Centerframe Sideframe R Rearpanel Switchassembly Powersl rritch assembly ...

Page 15: ...E switch ON EO RECswitch ON EOswitch ON TAPE switch OFF EQ RECswitch ON EQ srtritch ON TAPE switch EO RECswitch EO switch ON OFF ON EO r Itc I J TAPEswitch OFF EO RECswitch OFF EO switch ON TAPE sl rritch EO RECswitch EQ switch ON OF F OFF EOUALIZER lP t TAPEswitch OFF EO RECswitch OFF EOswitch OFF EO I N EOUALIZER EO OUT o _L _ PLAYBACKROUTE ...

Page 16: ...or vour Parts Stoch Control the fast mouing items are indicated with the marhs and GENERALLYMOVESFAS ER THAN This classification shalt be adiusted by each disttibutor becawe it depends on model number temperature humidity etc 1 FBT4OPOSOFZK 2 ANE 290 3 AAD 264 4 VBZ30P060FMC 5 ANMOa3 6 AAD S 8 7 AAD 396 8 AEC 609 9 ABA 252 Screw Bonnet case Push knob Screw Front panel assembly Slide knob æsembly P...

Page 17: ...he part Therefore when replacing be sure to use parts of identicat designation c For your Parts Stoch Control the fast mouing items are indicated with the marhs and GENERALLY MOVES FASTER THAN This classification shall be adjusted by each distributor becauseit depends on mod el number temperature humidity etc Pushknob AAD 396 Slide knob âssembly AAD 398 Push svvitch ASG 290 i 1 Push switch ASG 21s...

Page 18: ...r cord AOG O52 Pouærtransformer ATT 806 Pushswitch ASG 215 RearPanelViam Terminal L type tlP AKBO78 AF assembly GWK 178 Switch assembly VR assembly AWX 211 Slidevolume VRl VRT ACX O8 Bonngt case ANE 29O AC powercord ADGO52 IAC socket AKP 38 ...

Page 19: ...itch EO switch I8 J r Pr nY è TAPE Y TAPE switch EO RECswitch EO wvitch OFF ON ON EorN PLAY TAPE V TAPE switch EO RECswitch EO switch TAPE switch EO RECswitch EO switch EOUALIZER TAPE switch EO RECswitch EOswitch EorN T EOUALIZER TAPEswitch OFF EO RECswitch OFF EO switch OFF EOUALIZER r PLAYô TAPE _1 _TAPE PLAYBACKROUTE ...

Page 20: ...ts Stock Control the fast mouing items are indicated with the marhs and GENE RALLY MOVES FâS E R THAN This classification shall be adjusted by each distributor becawe it depende on model number temperaturc humidity etc D6craption Mark No Part No Descripltion l 1 2 3 4 5 6 7 L 9 FBT4OPOSOFZK ANE 29O AAD 264 VBZ3OPO6OFMC ANMO33 AAD 398 AAD 396 AEC 609 ABA 252 Screw Bonnetcæe Pushknob Screw Front pan...