Philips-AZ1048-gb-sm 维修电路原理图.pdf

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1、Version 1.0AZ1048 3141 785 35540USB CD Soundmachine-/55Published by SW 1034 Service Audio Subject to modification Copyright 2010 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrievalsystem or transmitted,

2、 in any form or by any means, electronic, mechanical, photocopying,or otherwise without the prior permission of Philips.CONTENTSTechnical specification .1-2Service measurement setup.1-3Service aids .1-4Instructions on CD playability .2-1. 2-2Block diagram .3-1Wiring diagram .4-1 Main board Circuit d

3、iagram .5-1 Layout diagram .5-2.5-3Tuner board Circuit diagram .6-1 Control board Circuit diagram .7-1 Layout diagram .7-2Rectifier board Circuit diagram .8-1 Layout diagram .8-2Exploded view diagram .9-1Revision list .10-1RadioFans.CN 收音机爱 好者资料库TECHNICAL SPECIFICATION1 - 2Tape deckFrequency respons

4、e - Normal tape (type I)125 - 8000 Hz (8 dB)Signal-to-noise ratio - Normal tape (type I)40 dBAWow and flutter 0.4% JISGeneralDimensions (main unit)(W x H x D)320 x 275 x 175 mmWeight (main unit) 1.7 kgy l ppusrewoPDC: 9V 1.5AAC: 230VPower consumption- Active- Standby12 W 0.7WtuptuorewoP1W x 2 RMSOpe

5、rating temperature range - 10 C - +50 C14 F - 122 FDiscepyTresaLSemiconductorre tema iDcs iD12cm/8cmcs iDt roppuSCD-DA, CD-R, CD-RW, MP3-CD, WMA-CDCADo iduA24Bits / 44.1kHzTotal Harmonic Distortion 62dBATuneregnaRgn i nuTFM: 87.5 - 108MHz; MW: 530 - 1600kHzTotal Harmonic Distortion 50 dBRadioFans.CN

6、 收音机爱 好者资料库1-3LF Generator e.g. PM5110RecorderUse Universal Test Cassette CrO2SBC419 4822 397 30069LEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metee.g. Sound Technology ST170LRDUTor Universal Test Cassette FeSBC420 4822 397 30071LEVEL METERe.g. Sennheiser UPM550with FF-filterS/

7、N and distortion metere.g. Sound Technology ST1700BLRDUTCDUse Audio Signal Disc(replaces test disc 3)SBC429 4822 397 30184Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmeter e.g. PM2534DUTS/N and distortion meter e.g. Sound Technology ST1700BFrame aeriale.g. 7122 707 89001Tuner AM (MW,LW)To avoid atm

8、ospheric 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 Voltmeter e.g. PM2534DUTRF Generator e.g. PM5326

9、S/N and distortion meter e.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 AIDSGBWARNINGAll ICs and many other semi-conductors aresusceptible to electrostatic discharges (ESD).

10、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 b

11、e 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 customerSET OKcheck playabilityNYplayabilityok ?c

12、heck playabilitycheck playabilityreturn setCustomer complaintCD related problemfast 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 whic

13、h 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: Fingerprint10secondsBlack dot from 00:50 to 01:10 jump forward/backward (search) within a reas

14、onable 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 wedge10secondsFingerprint10secondsBlack dot from 01:05 to 01:25 jump forward/backw

15、ard (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,

16、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 th

17、e 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 gent

18、ly (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

19、 particles make scratches onthe lens.INSTRUCTIONS ON CD PLAYABILITY2 - 2SET BLOCK DIAGRAM3 - 13 - 1SET WIRING DIAGRAM4 - 14- 15 - 15 - 1CIRCUIT DIAGRAM - MAIN BOARD 5 - 2LAYOUT DIAGARM - MAIN BOARDTOP SIDE VIEW5 - 2LAYOUT DIAGARM - MAIN BOARDBOTTOM SIDE VIEW5 - 35 - 3CIRCUIT DIAGARM - TUNER BOARD6 - 16 - 1CIRCUIT DIAGRAM - CONTROL BOARD7 - 17 - 1LAYOUT DIAGRAM - CONTROL BOARD7 - 27 - 2CIRCUIT DIAGRAM - RECTIFER BOARD8 - 18 - 1LAYOUT DIAGRAM - RECTIFER BOARD8 - 28 - 2EXPLODED VIEW DIAGRAM9 - 19 - 1 10 - 1Revision listVersion1.0 (3141 785 35540)*Initial Release