Philips-FWD-154-Service-Manual电路原理图.pdf

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1、Version 1.0FWD1543141 785 33780DVD Mini Hi-Fi System/98Published by LX 0913 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,

2、 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. .3-1Block diagram .4-1Wiring diagra

3、m .4-2 Display boardCircuit diagram .5-1.5-3 Layout diagram .5-4.5-5AMP boardCircuit diagram .6-1 Layout diagram .6-2.6-3Cassette boardCircuit diagram .7-1 Layout diagram .7-2.7-3USB/Line in/Video out boardCircuit diagram .8-1 Layout diagram .8-2DVD boardCircuit diagram .9-1.9-4 Layout diagram .9-5E

4、xploded view diagram .10-1Mechanical parts list .10-2Electrical parts list.11-1 TunerFMTuning Range 87.5 - 108 MHzTuning grid 50 KHzSensitivity- Mono, 26dB S/N Ratio- Stereo, 46dB S/N Ratio45 dBMWTuning Range 531 - 1602 kHzTape deckFrequency Response- Normal tape (type I)63-8000Hz(8dB)S/N Ratio- Nor

5、mal tape (type I)35dBAWow and flutter 82 dB/m/WAmplifierRated Output Power 2X20W RMSFrequency Response 63 - 16000 Hz, 3dBSignal to Noise Ratio 62dBDiscLaser Type SemiconductorDisc Diameter 12cm/8cmVideo Decoding MPEG-2/MPEG-1Video DAC 10 BitsSignal System PAL/NTSCVideo Format 4:3/16:9Video S/N 56 dB

6、 (minimum)Composite VideoOutput 1.0 Vp-p, 75 ohmAudio DAC 24Bits / 96 kHzTotal HarmonicDistortion 65 dBAGeneral informationAC power 110-127V/220 - 240V, 50/60 HzOperation powerconsumption50WStandby powerconsumption10WUSB direct Version 2.0/1.1Dimensions- Main Unit (W x H x D)- Speaker Box (W x H x D

7、)220 x 290 x 271mm189 x 290 x 175mmWeight- With Packing- Main Unit- Speaker Box8.5 kg3.8 kg2 x 1.7 kgTECHNICAL 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 T

8、echnology 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. PM2

9、534DUTS/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 filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz).R

10、F 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 S

11、ETUP1-4SERVICE 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 resistan

12、ce.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

13、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 recommend

14、edINSTRUCTIONS 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 (600 Black dot) maximum at 01:00 playback of these two tracks without audible

15、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 (600 Black dot) maximum at 01:15TR 19 (Fingerprint)TR 10 (1000 wedge) playback of all these tracks without

16、audible disturbanceplaying time for: 1000 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

17、- 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 wel

18、l 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 act

19、uator 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

20、.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 VIEW3 - 1 3 - 1Loosen 8 screws PT312 in both sides. a.Plug in the 220V AC power co

21、rd , set the menu to “CD“ function,and press “STANDBY-ON“ button , Press “OPEN/CLOSE“to open CD door.b.Pull out CD doorc.Press “OPEN/CLOSE“ button to close the CD tray, power off the mainset and unplug the AC power cord.4) Remove top cabinet. 5) Loosen 2 screws PA3x18 to remove CD tray.6) Loosen 6 s

22、crews T310 and 14 screws PT3x10 to remove Main board.123456873) Loosen 6 screws BT312 in rear cabinet .CD DOOR12123456123PT 3x6螺TUNERFM/MWTAPEL/RREC L/RL/REQ/VOLPT2314I2CLCD DISPLAYPT1621IR SENSORKHS-313AAD MECHANISMSLOADER5-CHANNELS DRIVERMCU CONTROLLERDVD/USBDECODER /SERVOAMPLIFIER4558+TDA8948INPU

23、T/OUTPUT TERMINALSAUX ,LINE-IN ,USB-PORTYUV , S-VHS ,CVB,COAXIAL ,HEADPHONETU_VCC(+9V)PWR_VCCVCC_+5VMCU_VCC(3.3V)MCU_VCC(3.3V)M+5VAU_VCC+30VAU_VCCPOWER MANAGEMENT+12V/+30VMCU_VCC(3.3V)VCC_+5VUSB_+5VPWR_VCC(+9V)TU_VCC(+9V) AU_VCC(+9V)USB_+5VSPHE8202LQPIC18F44J10D5888S(TDA8947 x 2)PT7312LV23010120V/240VSET BLOCK DIAGRAM4 - 1 4 - 1SET WIRING DIAGRAM4 - 2 4- 25 - 15 - 1CIRCUIT DIAGRAM - DISPLAY BOARDEQ/VOL PART