Philips-MC-157-Service-Manual电路原理图.pdf

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1、 MC157/61Copyright 2010 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permi

2、ssion of Philips.Published by SL 1011 Service Audio Printed in The Netherlands Subject to modificationMicro SystemVersion 1.1CLASS 1LASER PRODUCT 3141 785 32981TABLE OF CONTENTSPageLocation of PCBs .1-2Speci cations .1-3Measurement Setup .1-4Service Aids, Safety Instruction, etc .1-5CD Playability C

3、heck .1-6 to 1-8Software Version Checking . 2Set Block Diagram . 3Set Wiring Diagram . 4Main Board . 5Front Board. 6Cass Board . 7Set Mechanical Exploded View & Parts List . 8Electrical Parts List . 9Revision List . 10PCBS LOCATIONFRONT BOARDMAIN BOARD1-21-3AMPLIFIEROutput power . 2 x 2W RMSSignal-t

4、o-noise ratio. t 60 dBA (IEC)Frequency response . 125 16000 HzImpedance loudspeakers . 8:CD PLAYERFrequency range . 125 16000 HzSignal-to-noise ratio. 65 dBATUNERFM wave range . 87.5 108 MHzMW wave range . 531 1602 kHzSensitivity FM 26 dB sensitivity . 20 V MW 26 dB sensitivity . 5 mV/mTotal harmoni

5、c distortion. d 5%TAPE DECKFrequency responseNormal tape (type I).125 8000 Hz (8 dB)Signal-to-noise ratioNormal tape (type I). 40 dBAWow and flutter . d 0.4% JISSPEAKERSBass reflex systemDimensions (w x h x d) . 134 x 230 x 152 (mm)GENERAL INFORMATIONAC Power . 220 230 V / 50 HzDimensions (w x h x d

6、) . 148 x 233 x 216 (mm)Weight (with/without speakers) . approx. 3.65 / 1.53 kgPower consumptionActive . 15 WStandby . 250mV-Laser damaged !4,6V3V3,3V3,9V2V0,17V0,17VSanyoDA12T3HF-AmplifierD3D2D1Drive detection680R390539033K3BC847B787747n28181K53902574216364891011470R3893+3.3V2K23908 10K3923BC847B78

7、78BC847B78764n728133896100R220u28852881560p47n2887560R39012883470n28174u73n328143898220R389527K470n2884+3.3V3909820R3907100R392033K3897288282p3K339042K738993906470R+5V_HFHFINVrefCD10100p2815281622nLDONto 3826,3827VREF GEVDDA1VRINVSSA1ISLICELDOND1D2D3D4HFINHFREFIREFCD_DA: 0V / CD_RW: 3V (A-D)800mVppT

8、B = 0.5s/divEYE-PATTERN1,8V1,2V2,4V2,6V0,65VINSTRUCTIONS ON CD PLAYABILITY1-82-1 2-1To hold REPEAT &PRESET+ depressed Display shows theROM version “U - XX“U refers to VersionXX refers to Software version number of the uProcessor(counting up from 01 to 99)SOFTWARE VERSION CHECKINGSet on Standby.YNYNButton pressed?9Button pressed?DISPLAYTESTDisplay shows all patterns PRESET-3-1 3-1SET BLOCK DIAGRAM