Philips-MAS-65-Service-Manual电路原理图.pdf

Version 1.0MAS65© 3141 785 30490Mini Systemall versions Published by YT 0525 Service Audio Printed in The Netherlands Subject to modification© Copyright 2005 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrievalsystem or transmitted, in any form or by any means, electronic, mechanical, photocopying,or otherwise without the prior permission of Philips.Handling chip components . 1-1Service tools . 1-1Leadfree and safety information . 1-2Technical specification . 2-1Service measurement setup . 2-2Connections and controls . 3-1.3-3Disassembly diagram . 4-1.4-2Block diagram . 5-1Wiring diagram . 5-2Radio boardcircuit diagram . 6-1layout diagram . 6-2Cassette boardcircuit diagram . 7-1layout diagram . 7-2CD boardcircuit diagram. . 8-1layout diagram . 8-2Control and Main boardcircuit diagram (control board) . 9-1circuit diagram (main board) . 9-2layout diagram . 9-3Power boardcircuit diagram . 10-1layout diagram . 10-2Exploded view diagram .11-1 .11-2Mechanical partslist .11-2Electrical partslist . 12-1TABLE OF CONTENTS1 - 1HANDLING CHIP COMPONENTS1 - 22 - 1SPECIFICATIONS GENERAL: Mains voltage : 110-127/220-240V Switchable Mains frequency : 50/60 Hz Power consumption : 46 dB IF rejection : > 50 dB Image rejection : > 25 dB Distortion : 18 dB MWTuning range : 520 1710 kHz Grid : 10 kHz IF Frequency : 450 kHz g114 1kHz Aerial input : Loop antenna Sensitivity at 26sb S/N : 18 dB IF rejection : > 28 dB Image rejection : > 32 dB Distortion : 35 dB with type 1 tape COMPACT DISC: Number of programming track : 32 Frequency response Within g114 1.5 dB : 20 Hz 20 kHz Signal/Noise ratio : 50 dB/A-weighted Distortion at 1 kHz : 25 dB Support disc format : Disc format ISO9660, single session CD Max albums: 25, max. titles: 255 Bit rate : 128 bits (recommended) 2 - 2SERVICE MEASUREMENTBandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTRF Generator e.g. PM5326S/N and distortion metere.g. Sound Technology ST1700BTuner FWUse a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).Ri=50½Bandpass250Hz-15kHze.g. 7122 707 48001LF Voltmetere.g. PM2534DUTS/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 Faraday«s cage.Use a bandpass filter (or at least a high pass filter with 250kHz) to eliminate hum (50Hz, 100Hz).RF Generator e.g. PM5326Ri=50½LRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BDUTCD RECORDERUse Audio Signal Disc SBC429 4822 397 30184(replaces test disc 3)Use Universal Test Cassette Fe SBC420 4822 397 30071LRLEVEL METERe.g. Sennheiser UPM550with FF-filterS/N and distortion metere.g. Sound Technology ST1700BDUTLF Generator e.g. PM5110Ri=50½3 - 1CONNECTION AND CONTROLS3 - 2CONNECTION AND CONTROLS3 - 3CONNECTION AND CONTROLSFor more information onoperation instruction please visit Philips Audio internet site : http:/www.audio.philips.com4 - 1DISASSEMBLY DIADRAMSA1A3A2A2B1A. Remove of Back cabinetA1 : Remove screw SP3x10 - 2 pcs.A2 : Remove screw SP3x25 - 5 pcs.A3 : Remove screw SP3x8 - 5 pcs. B. Remove of CD TrayB1 : Remove screw SP3x10 (Washer) - 2 pcs.4 - 2DISASSEMBLY DIADRAMSC1C. Remove of Main PCB AssemblyC1 : Remove screw SP3x10 - 2 pcs.D1D2D. Remove Tuner PBAS and CD PBASD1 : Remove screw SP3x8 - 3 pcs.D2 : Remove screw SP3x8 - 4 pcs.