Philips-SW-3660-Service-Manual电路原理图.pdf

Service ManualServiceServiceServiceSW3660/00©Copyright 2003 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrieval system ortransmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwisewithout the prior permission of Philips.Published by BB-ET0326 Service Audio Printed in The Netherlands Subject to modificationActive SubwooferVersion 1.0TABLE OF CONTENTSPageLocation of PC Boards .1-2Specifications.1-2Measurement Setup .1-3ESD für Reparaturen sind Original-Ersatzteile zu verwenden.ILe norme di sicurezza esigono che lapparecchio venga rimessonelle condizioni originali e che siano utilizzati i pezzi di ricambioidentici a quelli specificati.“After servicing and before returning set to customer perform aleakage current measurement test from all exposed metal parts toearth ground to assure no shock hazard exist. The leakage currentmust not exceed 0.5mA.“ESD & SAFETY INSTRUCTIONDISASSEMBLY INSTRUCTIONS2-1Dismantling the Speaker Grille & Speaker Driver1. Place the Subwoofer Box as shown in the Picture 1 anduse a screw driver to force open the Speaker Grille.Caution: Take care the surface when take out theSpeaker Grille of Subwoofer2. Place the Subwoofer Box as shown in the Picture 2and loosen 4 screws A to remove the Speaker Driver.Dismantling the Front Assembly1. Place the Subwoofer Box as shown in the Picture 3and use a screw driver to force open the front assembly.Dismantling the Rear assembly1. Loosen 10 screws B as shown in the Picture 4 (RearView) to pull out the Printed Circuit Board assembly.Caution: Do not break the bundle of wires to the front.Take care the surface when take out the frontpanel of subwooferCaution: Do not break the bundle of wires to the front.Picture 4Picture 3WARNING: THERE IS ONLY A LED BETWEENTHE FRONT PANEL AND WOOD BOX. IF NOTNECCESSARY, PLEASE DONT TRY TO OPENTHE FRONT PANEL!A Picture 2Picture 1B 2-2SERVICE POSITION3-1 3-1BLOCK DIAGRAMPHASE CHANGE SWITCHVOL CONTROL STAND-BY SW PROTECTION CIRCUIT POWER ON/OFF DELAT CIRCUIT POWER SUPPLY DC:+/-25V SUBWOOFER SPK DRIVER RELAY & DRIVER POWER AMP PRE AMP INPUT HPF LPFLED3-2 3-2WIRING DIRGRAMAMPLIFIER, JACK & LED / VRBOARDTABLE OF CONTENTSInternal IC Diagram. 4-1Circuit Diagram .4-2PCB Layout View .4-3Electrical Parts list .4-44-1 4-1TDA7296 INTERNAL IC DIAGRAMIN +IN -BOOTRAP+ VSBOOTRAPOUTPUT- VSBipolarTransconductanceInput StageMOS Gain &Level ShiftingStageMOS OutputStageShot circuit Protection+-4-2 4-2CIRCUIT DIAGRAM12 3412 34ABABC301 B1C303 B1C304 B1C305 A1C306 B1C307 B1C401 B1C402 A1C403 B1C404 A1C405 A2C406 A2C407 A2C410 A1C411 A1C412 A1C413 A1C414 A1C415 A1C501 A2C509 A2C510 A3C511 B3C512 A3C513 A3C514 B3C515 A3C516 A3C517 A2C518 A4C519 A4C520 B4C521 B4C522 B4C900 B4C901 B3C902 B3C903 B3C904 B3C905 B3C906 B3C907 B3C908 B3C909 B3C910 B3C911 B3C912 B3C913 B3C914 B4C915 B4CN301 A1CN401 A2CN501 A4CN901 B4D501 A4D503 A3D901 B3D902 B3D903 B3D904 B3F901 B4F902 B4IC401/A A2IC401/B A1IC401/C A1IC502 A3JK301 B1LD401 B3Q352 B2Q501 A4Q502 A4Q503 A3Q504 A4Q505 A4R301 B1R302 B1R303 B1R304 B1R366 B1R367 B1R368 B2R369 B2R370 B2R371 B2R372 B2R373 B2R401 A1R402 B1R403 A1R404 A1R405 A1R406 A2R407 A2R410 A1R411 A1R514 B3R515 B3R516 A3R518 A3R519 A3R520 A3R521 A3R522 A3R523 A3R524 A3R525 A4R526 A4R527 A4R528 A4R529 A4R530 B4R531 B4R532 B4R533 A3R901 B4R902 B3RB301 B1RB401 B2RB402 B2RB901 B4RL501 A4SW301 B1SW901 B4T901 B4VR401 B2ZD901 B3ZD902 B3PIN NO.VOLTAGE 0V 0V 0V 0V 0V 15.4V 26.2V0V 0V 0V 13.4V 0V 0V0V0V 0V 0V -13.3V 0V 0V -12V9.3V 8.9V 0V0V 26.3V 0V -26.3V-26.3V1234567891011213 1514IC502 (TDA7296)PIN NO.VOLTAGE123456789101121314IC401 (TL074CN)TransistorBCEQ352 0V 2.1V 0V1.32V 0.8V 0.74V0.7V 0.8V 0V0V 11V 0V0V 1.3V 0V0V 1.3V 0VQ501Q502Q503Q504Q505LocationPin