Philips-FWM-375-Service-Manual电路原理图.pdf

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1、CLASS 1LASER PRODUCTCopyright 2007 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the

2、prior permission of Philips.Published by SL0749 Service Audio Printed in The Netherlands Subject to modifi cation.GB3141 785 31931 Mini SystemTABLE OF CONTENTSPageSpecifi cations .1-1Measurement Setup .1-2Service Aids, Safety Instruction, etc .1-3 to 1-5Block Diagram . 2Wiring Diagram . 3Front Board

3、 . 4Hi AMP Board . 5Main Board . 6Power /Low AMP Board . 7Mechanical Exploded View & Parts List . 8Version 1.1FWM375/05/77/BKRevision List . 91-2AMPLIFIER1 kHz(low channel - both channels driven). 30 W per channel (8 : 10 kHz(high channel - both channels driven). 30 W per channel (8 : Total output p

4、ower . 120 WSignal-to-noise ratio . t 60 dBA (IEC)Frequency response . 125 16000 HzInput sensitivityAUX/CDR In . 2 VMicrophone . 1.5 mVOutputSpeakers .t 6 :Headphones. 32 :(1) (6 :, 1 kHz, 10% THD)CD/MP3-CD PLAYERNumber of programmable tracks . 40Frequency response . 125 16000 Hz -3dBSignal-to-noise

5、 ratio . t 75 dBAChannel separation .t 50 dB (1 kHz)Total harmonic distortion. 250mV-Laser damaged !4,6V3V3,3V3,9V2V0,17V0,17VSanyoDA12T3HF-AmplifierD3D2D1Drive detection680R390539033K3BC847B787747n28181K53902574216364891011470R3893+3.3V2K23908 10K3923BC847B7878BC847B78764n728133896100R220u288528815

6、60p47n2887560R39012883470n28174u73n328143898220R389527K470n2884+3.3V3909820R3907100R392033K3897288282p3K339042K738993906470R+5V_HFHFINVrefCD10100p2815281622nLDONto 3826,3827VREF GEVDDA1VRINVSSA1ISLICELDOND1D2D3D4HFINHFREFIREFCD_DA: 0V / CD_RW: 3V (A-D)800mVppTB = 0.5s/divEYE-PATTERN1,8V1,2V2,4V2,6V0,65VINSTRUCTIONS ON CD PLAYABILITY1-72-1 2-1SET BLOCK DIAGRAMSET WIRING DIAGRAM3-1 3-14-1 4-1PCB LAYOUT - FRONT BOARD (TOP VIEW)