Philips-FWM-997-X-Service-Manual电路原理图.pdf

《Philips-FWM-997-X-Service-Manual电路原理图.pdf》由会员分享，可在线阅读，更多相关《Philips-FWM-997-X-Service-Manual电路原理图.pdf（34页珍藏版）》请在收音机爱好者资料库上搜索。

1、Version 1.0FWM997X3141 785 33280MP3 Mini Hi-Fi System/55Published by LX 0903 Service Audio Subject to modificationCopyright 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. .3-1.3-2Block diagram .4-1Wiring di

3、agram .4-2 Main boardCircuit diagram .5-1.5-2 Layout diagram .5-3.5-4AMP boardCircuit diagram .6-1 Layout diagram .6-2.6-3Front boardCircuit diagram .7-1 Layout diagram .7-2.7-3MCU boardCircuit diagram .8-1Layout diagram .8-2.8-3CD BoardCircuit diagram. .9-1Layout diagram .9-2.9-3Sub Power Board (it

4、 is not repaired,diagram for referrence only)Circuit diagram. .10-1Layout diagram .10-1Sub AMP Board (it is not repaired,diagram for referrence only)Layout diagram .11-1Sub SW Board (it is not repaired,diagram for referrence only)Layout diagram .12-1Exploded view diagram .13-1Mechanical parts list .

5、13-2.13-3Electrical parts list.14-1.14-2 /78FWM997AMPLIFIERRMS output powerTotal output power . 800 W RMSSignal-to-noise ratio . 67 dB A (IEC)Frequency response . 60 16000 HzInput sensitivityAUX . 1500mV/2000mVOutputSpeakers . 3 (1) (3 , 1 kHz, 10%THD)CD/MP3-CD PLAYERNumber of programmable tracks .

6、40Frequency response . 60 16000 Hz -3dBSignal-to-noise ratio . 75 dB AChannel separation . 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 ran

7、ge (9 kHz) . 531 1602 kHzAM wave range (10 kHz) . 530 1700 kHzTuning grid .9/10 kHzNumber 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 999FRONT SPEAKERSSystem 4-way; doub

8、le port bass reflexImpedance . 2 x 6 Woofer . 2 x 5.25”Tweeter. 2 x 1.75”Output power .2 x (100 W+ 100 W)Dimensions (w x h x d) . 225 x 430 x 275 (mm)Weight . 4.928 kg eachREAR SPEAKERSSystem full range satelliteImpedance . 3 Speaker driver . 4” + 4” (fake)Frequency response . 150Hz-16KHzOutput powe

9、r . 2 x 100 WDimensions (w x h x d) . 142.5 x 345 x 171.3Weight . 2.1 kg eachSUBWOOFERAC Power . 110 127 / 220 240 V;.50/60 Hz, SwitchablePower ConsumptionActive . 100 WImpedance . 6 Subwoofer driver . 8”Output power . 200 WDimensions (w x h x d). 274 x 430 x 342.3 (mm)Weight . 11.2 kgGENERALMateria

10、l/finish . Polystyrene/MetalAC Power (for the main unit) .110 127 / 220 240 V;.50/60 Hz, SwitchablePower ConsumptionActive . 90 WStandby . 20 WDimensions (w x h x d) . 265 x 345 x 382 (mm)Weight (without speakers) . 8.671 kgSpecifications and external appearance aresubject to change without notice.T

11、ECHNICAL 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 UPM5

12、50with 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

13、,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 Voltmetere.g. PM2534DUTRF Genera

14、tor 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 di

15、scharges (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

16、 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 playabilityN

17、Yplayabilityok ?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 pages1PLAYABILI

18、TY 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 01:10 jump forward/backward

19、(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 10secondsBlack dot from 01:05 to

20、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. I

21、n 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 CLEANINGBe

22、cause 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 func

23、tion.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.T

24、his to avoid that little particles make scratches onthe lens.INSTRUCTIONS ON CD PLAYABILITY2 - 2DISASSEMBLY DIAGRAM VIEWPART 13 - 1 3 - 13 - 23 - 2DISASSEMBLY DIAGRAM VIEWPART 23CDC CD LoaderPICK-UP MECHASANYO : DA-11VF4 CHMOTOR DRIVER(BA5826)ROHMRF AMP+SSP+DSP(BU9543)PLL Tuner(SANYOLC72131+TA1823or

25、 Panasonic TM10)MCS LOGIC BX8800MP3/WMA En/De + MCU +USB/CARDSOUND CONTROLSW+VOL+EQ(TDA7468 or/PT2314)POWER AMPTDA8920AUXDISPLAYVFDUSB/SDMMCNOR FLASHSST39VF400ASDRAM16MbitPort Expander74HC4094VFD DRIVERPT6315SpectrumanalyzersLED controllerfor Light Box(May use)MUX74VC157ADCCE2632Karaoke( use standardFWM582 Karaokeboard)SET BLOCK DIAGRAM4 - 1 4 - 1SET WIRING DIAGRAM4 - 2 4- 2