Philips-MCM-148-Service-Manual电路原理图.pdf
MCM148/55/77©Copyright 2008 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 permission of Philips.Published by SL 0837 Service Audio Printed in The Netherlands Subject to modificationMicro SystemVersion 1.2CLASS 1LASER PRODUCT© 3141 785 32032TABLE OF CONTENTSPageLocation of PCBs .1-2Specifi cations .1-3Measurement Setup .1-4Service Aids, Safety Instruction, etc .1-5CD Playability Check .1-6 to 1-8Software Version Checking . 2Set Block Diagram . 3Set Wiring Diagram . 4Main Board . 5Front/MCU Board . 6Set Mechanical Exploded View & Parts List . 7Revision List . 9Electrical Parts List . 8PCBS LOCATIONFRONT BOARDMAIN BOARD1-21-3AMPLIFIEROutput power . 2 x 2W RMSSignal-to-noise ratio. 1 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 . 530 1700 kHzSensitivity FM 26 dB sensitivity . 20 µV MW 26 dB sensitivity . 5 mV/mTotal harmonic distortion. 0 5%SPEAKERSBass reflex systemDimensions (w x h x d) . 134 x 230 x 152 (mm)GENERAL INFORMATIONAC Power . 110 127 / 220 240 V. 50/60 Hz, switchableDimensions (w x h x d) . 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 10K3923BC847B7878BC847B78764n728133896100R220u28852881560p47n2887560R39012883470n28174u73n328143898220R389527K470n2884+3.3V3909820R3907100R392033K3897288282p3K339042K738993906470R+5V_HFHFINVrefCD10100p2815281622nLDONto 3826,3827VREF GEVDDA1VRINVSSA1ISLICELDOND1D2D3D4HFINHFREFIREFCD_DA: 0V / CD_RW: 3V (A-D)800mVppTB = 0.5µs/divEYE-PATTERN1,8V1,2V2,4V2,6V0,65VINSTRUCTIONS ON CD PLAYABILITY1-82-1 2-1To hold DBB & SKIPNEXT depressed SOFTWARE VERSION CHECKINGSet on Standby.YNYNButton pressed?9Button pressed?DISPLAYTESTDisplay shows all patterns SKIP NEXTDisplay shows “NEW“SOFTWARERESETVER refers to Versiony.yy refers to Software version number of the uProcessor(counting up from 01 to 99)xx refers to date number of the production.Display shows theMCU software version “VER y.yy MTP xx-xx-2007“3-1 3-1SET BLOCK DIAGRAM
