Philips-FWM-417-Service-Manual电路原理图.pdf

Version 1.0FWM417X/783141 785 34070MP3 Mini Hi-Fi SystemFWM417/55Published by LX 0919 Service Audio Subject to modification© Copyright 2009 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrievalsystem or transmitted, in any form or by any means, electronic, mechanical, photocopying,or otherwise without the prior permission of Philips.CONTENTSTechnical specification .1-2 Service measurement setup.1-3 Service aids .1-4 Instructions on CD playability .2-1.2-2Block diagram .3-1Wiring diagram .4-1Disassembly diagram. .5-1.5-2Main boardCircuit diagram .6-1.6-2 Layout diagram .6-3.6-4Display boardCircuit diagram .7-1 Layout diagram .7-2.7-3CD boardCircuit diagram .8-1Layout diagram .8-2.8-3MCU boardCircuit diagram .9-1 Layout diagram .9-2Tuner Board Circuit diagram. .10-1Layout diagram .10-2Power BoardCircuit diagram. .11-1Layout diagram .11-2HF BoardCircuit diagram. .12-1Layout diagram .12-2Exploded view diagram .13-1Mechanical parts list .13-2.13-3Electrical parts list.14-1.14-2TunerTuning range FM: 87.5 - 108MHz;AM: 531 - 1602kHz(9KHz); 530 - 1700KHz(10KHz)Tuning grid 100KHz (FM);9KHz/10KHz (AM)Number of presets 40 (FM + AM)FM 75ohm wireAM loop antennaSpeakersSpeaker Impedance 6ohmWoofer 2 x 5.25”Tweeter 2 x 1.75”Dimensions(W x H x D)249 x 344 x 250mmWeight 3.58kg eachGeneral informationAC power 110 - 127/220 - 240V,50/60HzOperation powerconsumption180WStandby powerconsumption67dB A (IEC)Aux input 1500mV/2000mVDiscLaser type SemiconductorDisc diameter 12cm/8cmSupport disc CD-DA, CD-R,CD-RW, MP3-CD,WMA-CDAudio DAC 24Bits / 44.1kHzTotal harmonicdistortion75dBATECHNICAL SPECIFICATION1 - 21-3LF Generator e.g. PM5110RecorderUse Universal Test Cassette CrO2 SBC419 4822 397 30069LEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metee.g. Sound Technology ST170LRDUTor Universal Test Cassette Fe SBC420 4822 397 30071LEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BLRDUTCDUse Audio Signal Disc(replaces test disc 3)SBC429 4822 397 30184Bandpass250Hz-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 Faraday´s cage.Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz).RF Generator e.g. PM5326Ri=50:Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTRF Generator e.g. PM5326S/N and distortion metere.g. Sound Technology ST1700BUse a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).Ri=50:Tuner FMMEASUREMENT SETUP1-4SERVICE AIDSGB WARNINGAll ICs and many other semi-conductors aresusceptible to electrostatic discharges (ESD).Careless handling during repair can reduce lifedrastically.When repairing, make sure that you areconnected with the same potential as the massof the set via a wrist wrap with resistance.Keep components and tools also at thispotential.ESDCLASS 1LASER PRODUCTGBSafety regulations require that the set be restored to its originalcondition and that parts which are identical with those specified,be usedSafety components are marked by the symbol!.Lead freeSet remains closed!NYPlay a CD for at least 10 minutesYplayabilityok ?Nplayabilityok ?add Info for customer“SET OK“check playabilityNYplayabilityok ?check playabilitycheck playabilityreturn setCustomer complaint“CD related problem“fast“ lens cleaning123For flap loaders (= access to CD drive possible)cleaning method 4 is recommendedINSTRUCTIONS ON CD PLAYABILITY2 - 1Exchange CDM1 - 4 For description - see following pages1PLAYABILITY CHECKFor sets which are compatible with CD-RW discsuse CD-RW Printed Audio Disc.7104 099 96611TR 3 (Fingerprint)TR 8 (600µ Black dot) maximum at 01:00 playback of these two tracks without audible disturbanceplaying time for: Fingerprint 10secondsBlack dot from 00:50 to 01:10 jump forward/backward (search) within a reasonable timeFor all other sets use CD-DA SBC 444A.4822 397 30245TR 14 (600µ Black dot) maximum at 01:15TR 19 (Fingerprint)TR 10 (1000µ wedge) playback of all these tracks without audible disturbanceplaying time for: 1000µ wedge 10secondsFingerprint 10secondsBlack dot from 01:05 to 01:25 jump forward/backward (search) within a reasonable time2CUSTOMER INFORMATIONIt is proposed to add an addendum sheet to the set whichinforms the customer that the set has been checkedcarefully - but no fault was found.The problem was obviously caused by a scratched, dirty orcopy-protected CD. In case problems remain, the customeris requested to contact the workshop directly. The lens cleaning (method 3) should be mentioned in theaddendum sheet.The final wording in national language as well as the printingis under responsibility of the Regional Service Organizations.4LIQUID LENS CLEANINGBecause the material of the lens is synthetic and coatedwith a special anti-reflectivity layer, cleaning must be donewith a non-aggressive cleaning fluid. It is advised to use“Cleaning Solvent The actuator is a very precise mechanical component andmay not be damaged in order to guarantee its full function.Clean the lens gently (dont press too hard) with a soft andclean cotton bud moistened with the special lens cleaner.The direction of cleaning must be in the way as indicated inthe picture below.Before touching the lens it is advised to clean thesurface of the lens by blowing clean air over it.This to avoid that little particles make scratches onthe lens.INSTRUCTIONS ON CD PLAYABILITY2 - 23-1 3-1SET BLOCK DIAGRAMFUNCTION IC TDA7468DCD SERVOBU9543FLFRBX8800CD L/RRC5/RC6 CODEKEY PARTAMPFILERSTK-433-090E(SANYO)MAIN L/RRCSENSOR16MSDRAM8M NORFALSHPICK UPDA11PICK UPDA11MOTORMOTORADCWM8782MUX74LVC157AUXTUNERSI4730/31MICRO PHONEUSBRTCHT1381MOTOR DRIVERBA5826IICAUDIO L&RIICPCM BCK ,LRCK,DATE PCMCD PCM INPUTINPUTTUNER L/RIICCONTROL DATACD PCM BCK, LRCK,DATEI/OExpand IC74HC4094*3LCDDRIVERE T 8862LCDAMPFILERSTK-433-090E(SANYO)SLSR3CDC MOTORDRIVERTDA7073A-4-1 4-1SET WIRING DIAGRAMDISMANTLING INSTRUCTIONS1) Loosen 4 screws to remove the Cover Top of the set.2) Loosen 2 screws to remove the Panel Left and 2 screws toremove the Panel Right of the set.3) Slide out the CDC Tray as shown in the diagram below withthe help of a flat head screw driver.Dismantling of the CDC Module and Front PanelRemove CDC Module4) Remove the Cover Tray CDC as indicated.Sliding Out The CDC TrayFront View CDCRemove Cover Tray CDC5) Loosen 2 screws A and 2 screws B to remove the CDCModule as indicated.6) Remove 2 screws at the bottom to separate theFront Panel Assembly from the Plate Bottom.5-1 5-15-2 5-2DEFG1)Remove 2 screws C as indicated to loosen the Front Cabinet.2)Remove 2 screws D as indicated to loosen the Tuner Module.3)Remove 9 screws E&I as indicated to loosen the Main Board.4)Remove 8 screws G&H as indicated to loosen the POWER Board.5)Remove 3 screws F as indicated to loosen the Bottom Cabinet.C1)Remove 14 screws J as indicated to loosen the DISPLAY1 Board.2)Remove 11 screws K as indicated to loosen the KEY Board.3)Remove 2 screws L as indicated to loosen the USB Jack Board.Dismantling of Rear portionDismantling of the PCB BoardIHK LJ