Philips-FWM-397-Service-Manual电路原理图.pdf

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1、Version 1.1FWM3973141 785 32661MP3 Mini Hi-Fi System-/55/78/77/BK/85Published by LX 1013 Service Audio Subject to modificationCopyright 2010 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrievalsystem or

2、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 .2-1.2-2Disassembly diagram. .3-1.3-2Block diagram .

3、4-1Wiring diagram .4-2 Main boardCircuit diagram .5-1 Layout diagram .5-2AMP boardCircuit diagram .6-1.6-2 Layout diagram .6-3.6-4Display/Key boardCircuit diagram .7-1 Layout diagram .7-2.7-3MCU boardCircuit diagram .8-1Layout diagram .8-2.8-3AC Boardcircuit diagram. .9-1layout diagram .9-2CD Boardc

4、ircuit diagram. .10-1layout diagram .10-2.10-3Exploded view diagram .11-1Mechanical parts list .11-2Electrical parts list.12-1.12-4Revision list.13-1AMPLIFIERRMS output power1KHz (Low channel-both channels driven) . 60 W per channel10KHz (High channel-both channels driven) . 60 W per channelTotal ou

5、tput power .240 WSignal-to-noise ratio . 67 dB A (IEC)Frequency response . 60 16000 HzInput sensitivityAUX . 1500mV/2000mVOutputSpeakers . 6 (1) (6 , 1 kHz, 10%THD)CD/MP3-CD PLAYERNumber of programmable tracks . 40Frequency response . 60 20000 Hz -3dBSignal-to-noise ratio . 75 dB AChannel separation

6、 . 50 dB (1 kHz)Total harmonic distortion. 1.5%MPEG 1 Layer 3 (MP3-CD) . MPEG AUDIOMP3-CD bit rate . 32-256 kbps(128 kbps advised)Sampling frequencies .32, 44.1, 48 kHzTUNERFM wave range . 87.5 108 MHzAM wave range (9 kHz) . 531 1602 kHzAM wave range (10 kHz) . 530 1700 kHzTuning grid .9/10 kHzNumbe

7、r of presets . 40AntennaFM . 75 wireAM . Loop antennaUSB PLAYERUSB . 12Mb/s,V1.1. support MP3 and WMA filesNumber of albums/folders . maximum 99Number of tracks/titles. maximum 999SPEAKERSSystem 2-way; double port bass reflexImpedance . 6 Woofer . 5.25”Tweeter. 1.75”Dimensions (w x h x d) . 249 x 34

8、4 x 250 (mm)Weight . 3.65 kg eachGENERALMaterial/finish . Polystyrene/MetalAC Power . 110 127 / 220 240 V;.50/60 Hz, SwitchablePower ConsumptionActive . 100 WStandby . 15 WDimensions (w x h x d) . 265 x 310 x 403 (mm)Weight (without speakers) . 9.1 kgSpecifications and external appearance aresubject

9、 to change without notice.TECHNICAL 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 30071LEVE

10、L 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.

11、 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 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 Voltm

12、etere.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 aresusc

13、eptible 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 PRODUCTG

14、BSafety 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 custome

15、r“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 - se

16、e following pages1PLAYABILITY CHECKFor sets which are compatible with CD-RW discsuse CD-RW Printed Audio Disc.7104 099 96611TR 3 (Fingerprint)TR 8 (600 Black dot) maximum at 01:00 playback of these two tracks without audible disturbanceplaying time for: Fingerprint 10secondsBlack dot from 00:50 to 0

17、1:10 jump forward/backward (search) within a reasonable timeFor all other sets use CD-DA SBC 444A.4822 397 30245TR 14 (600 Black dot) maximum at 01:15TR 19 (Fingerprint)TR 10 (1000 wedge) playback of all these tracks without audible disturbanceplaying time for: 1000 wedge 10secondsFingerprint 10seco

18、ndsBlack 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, d

19、irty 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 Organizati

20、ons.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

21、 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 - 2DISASSEMBLY DIAGRAM VIEWPART 13 - 1 3 - 13 - 23 - 2DISASSEMBLY DIAGRAM VIEWPART 2SET BLOCK DIAGRAM4 - 1 4 - 1SET WIRING DIAGRAM4 - 2 4- 2