Philips-FWC-185-Service-Manual电路原理图.pdf
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1、Version 1.0FWC185For /77/79/98 version 3141 785 31230Mini SystemPublished by YB 0628 Service Audio Printed in The Netherlands Subject to modification Copyright 2006 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored
2、in a retrievalsystem or transmitted, in any form or by any means, electronic, mechanical, photocopying,or otherwise without the prior permission of Philips.Handling chip components . 1-1Leadfree and safety information . 1-2Technical specification . 2-1Service tools . 1-1Service measurement setup . 2
3、-2Connections and controls . 3-1.3-3Disassembly diagram . 4-1.4-3Wiring diagram . 5-1Display boardcircuit diagram . 6-1layout diagram . 6-2CD boardcircuit diagram. . 7-1layout diagram . 7-2Main boardcircuit diagram . 8-1layout diagram . 8-2Exploded view diagram . 10-1Mechanical partslist . 10-2Elect
4、rical partslist . 11-1.11-2TABLE OF CONTENTSPower boardcircuit diagram . 9-1layout diagram . 9-11 - 1HANDLING CHIP COMPONENTS1 - 22 - 1SPECIFICATIONSGENERAL:Mains voltage : 240V Mains frequency : 50 HzPower consumption : 45 dBIF rejection : 50 dBImage rejection : 20 dBDistortion : 22 dBMWTuning rang
5、e : 531 1602kHzGrid : 9 kHzIF Frequency : 465 kHz 5 kHzAerial input : Bar antennaSensitivity at 26sb S/N : 22 dBIF rejection : 45 dBImage rejection : 28 dBDistortion : 42 dB with type 1 tapeCOMPACT DISC:Number of programming track : 30Frequency responseWithin 3 dB : 30 Hz 16 kHzSignal/Noise ratio :
6、76 dB/A-weightedDistortion at 1 kHz : 25 dB2 - 2SERVICE MEASUREMENTBandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTRF Generator e.g. PM5326S/N and distortion metere.g. Sound Technology ST1700BTuner FWUse a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilott
7、one (19kHz, 38kHz).Ri=50Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTS/N and distortion metere.g. Sound Technology ST1700BFrame aeriale.g. 7122 707 89001Tuner AM (MW,LW)To avoid atmospheric interference all AM-measurements have to be carried out in a Faradays cage.Use a bandpass f
8、ilter (or at least a high pass filter with 250kHz) to eliminate hum (50Hz, 100Hz).RF Generator e.g. PM5326Ri=50LRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BDUTCD RECORDERUse Audio Signal Disc SBC429 4822 397 30184(replaces test disc 3)Use Univ
9、ersal Test Cassette Fe SBC420 4822 397 30071LRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BDUTLF Generator e.g. PM5110Ri=503 - 1CONNECTION AND CONTROLS1 52 3 4 6 9 087*( ) $rases a CD programTape deck keysRECORD.starts recording.starts playback/
10、.fast rewinds/winds a tape70.stops playback;.opens the tape holder.interrupts playback orrecordingTape deck#FUNCTION:TUNER,TAPE,CDselects CD,tape or radio source of sound$PROGRAMprograms tracks and reviews the program%n3.5 mm headphone socketHelpful hints: Adjust the volume to a moderate levelbefore
11、 you plug in the headphones.Connecting headphones will switch off thespeakers.starts or pauses CD playback&DISC: 1/ 2/ 3selects a disc tray for playback*VOLUME 3,4adjusts the volume level(POWERswitches the system on or to standbymode.)REMOTE SENSORsensor for the infrared remote controlHelpful hints:
12、Always point the remotecontrol towards this sensor.FM ST.indicatorPower indicator3 - 2CONNECTION AND CONTROLSRemote control1POWER ONswitches the system on or to standbymode2DIGITS 0 - +10CD:selects a track number3REPEAT selects repeat modes 4starts or pauses CD playback5DISC DISC 1/DISC 2/DISC 3sele
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