Philips-MCM-204-Service-Manual(1) 电路图 维修手册.pdf
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1、 MCM204/all version Copyright 2007 Philips Consumer Electronics B.V. Eindhoven, The Netherlands All 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
2、 prior permission of Philips. Published by SL 0830 Service Audio Printed in The Netherlands Subject to modification Micro System Version 1.6 CLASS 1 LASER PRODUCT 3141 785 31326 TABLE OF CONTENTS Page Location of PCBs .1-2 Specifi cations .1-3 Measurement Setup .1-4 Service Aids, Safety Instruction,
3、 etc .1-5 CD Playability Check .1-6 to 1-7 Software Version Checking .2 Set Block Diagram .3 Set Wiring Diagram .4 Main & Power Board.5 Front/MCU Board .6 CD MP3 Board .7 Set Mechanical Exploded View & Parts List .8 Revision List .9 MCM204B/61 RadioFans.CN 收音机爱 好者资料库 CD MP3 Board CD Drive Main Board
4、 Front / MCU Board Power Board LOCATION OF PCBs 1-2 VERSION VARIATIONS Type /Versions: Board in used: MCM204 & MCM204B Service policy MAIN BOARD CD MP3 BOARD POWER BOARD * TIPS : C - Component Lever Repair. M - Module Lever Repair - Used C/M /05 /1296/61 FRONT/MCU BOARD C C x M /77 C/M C C M C/M C C
5、 M C/M C C M C/M C C M RadioFans.CN 收音机爱 好者资料库 1-3 AMPLIFIER Output power .2 x 4W RMS Signal-to-noise ratio. ? 60 dBA (IEC) Frequency response . 125 16000 Hz Impedance loudspeakers .4? CD PLAYER Frequency range . 125 16000 Hz Signal-to-noise ratio. 65 dBA TUNER FM wave range .87.5 108 MHz MW wave ra
6、nge.531 1602 kHz Sensitivity at 75 ? FM 26 dB sensitivity . 20 V MW 26 dB sensitivity .5 mV/m Total harmonic distortion. ? 5% TAPE DECK Frequency response Normal tape (type I).125 8000 Hz (8 dB) Signal-to-noise ratio Normal tape (type I). 40 dBA Wow and flutter. ? 0.4% JIS SPEAKERS Bass reflex syste
7、m Dimensions (w x h x d) .146 x 228 x 160 (mm) GENERAL INFORMATION AC Power.220 230 V / 50 Hz Dimensions (w x h x d) . 146 x 228 x 216(mm) Weight (with/without speakers) . .approx. 4.4 / 2.0 kg Power consumption Active . 30 W Standby . 5 W Eco Power Standby. 1 W Specifications and external appearanc
8、e are subject to change without notice. SPECIFICATIONS RadioFans.CN 收音机爱 好者资料库 LF Generator e.g. PM5110 Recorder Use Universal Test Cassette CrO2SBC419 4822 397 30069 LEVEL METER e.g. Sennheiser UPM550 with FF-filter S/N and distortion meter e.g. Sound Technology ST1700B L R DUT or Universal Test Ca
9、ssette FeSBC420 4822 397 30071 LEVEL METER e.g. Sennheiser UPM550 with FF-filter S/N and distortion meter e.g. Sound Technology ST1700B L R DUT CD Use Audio Signal Disc (replaces test disc 3) SBC429 4822 397 30184 Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter e.g. PM2534 DUT S/N and distorti
10、on meter e.g. Sound Technology ST1700B Frame aerial e.g. 7122 707 89001 Tuner 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). RF Generator e.g
11、. PM5326 Ri=50 Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter e.g. PM2534 DUT RF Generator e.g. PM5326 S/N and distortion meter e.g. Sound Technology ST1700B Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz). Ri=50 Tuner FM MEASUREMENT SETU
12、P 1-4 1-5 Service Tools: Universal Torx driver holder .4822 395 91019 Torx bit T10 150mm .4822 395 50456 Torx driver set T6-T20 .4822 395 50145 Torx driver T10 extended .4822 395 50423 Compact Disc: SBC426/426A Test disc 5 + 5A .4822 397 30096 SBC442 Audio Burn-in test disc 1kHz .4822 397 30155 SBC4
13、29 Audio Signals disc .4822 397 30184 Dolby Pro-logic Test Disc .4822 395 10216 SERVICE AIDS GBWARNING All ICs and many other semi-conductors are susceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connect
14、ed with the same potential as the mass of the set via a wrist wrap with resistance. Keep components and tools also at this potential. ESD CLASS 1 LASER PRODUCT GB Safety regulations require that the set be restored to its original condition and that parts which are identical with those specified, be
15、 used Safety components are marked by the symbol !. Lead free Set remains closed! Standard repair procedure N Y Play a CD for at least 10 minutes Y playability ok ? N playability ok ? add Info for customer SET OK playability ok ? Y N check playability N Y playability ok ? check playability check pla
16、yability EYE-Pattern ok ? N Y check EYE-Pattern replace CD Drive Laser current ok ? N Y check Laser current CD Drive offsets ok ? NY check CD Drive offsets clean the lens check playability return set Customer complaint CD related problem return set return set replace CD Drive return set replace CD D
17、rive return set replace Signal Processor return set fast lens cleaning 1 2 3 4 5 6 7 For flap loaders (= access to CD drive possible) cleaning method 4 is recommended 1 - 7 For description - see following pages INSTRUCTIONS ON CD PLAYABILITY 1-6 1 PLAYABILITY CHECK For sets which are compatible with
18、 CD-RW discs use CD-RW Printed Audio Disc.7104 099 96611 TR 3 (Fingerprint) TR 8 (600 Black dot) maximum at 01:00 playback of these two tracks without audible disturbance playing time for: Fingerprint 10seconds Black dot from 00:50 to 01:10 jump forward/backward (search) within a reasonable time For
19、 all other sets use CD-DA SBC 444A.4822 397 30245 TR 14 (600 Black dot) maximum at 01:15 TR 19 (Fingerprint) TR 10 (1000 wedge) playback of all these tracks without audible disturbance playing time for: 1000 wedge 10seconds Fingerprint 10seconds Black dot from 01:05 to 01:25 jump forward/backward (s
20、earch) within a reasonable time 2 CUSTOMER INFORMATION It is proposed to add an addendum sheet to the set which informs the customer that the set has been checked carefully - but no fault was found. The problem was obviously caused by a scratched, dirty or copy-protected CD. In case problems remain,
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