Philips-MCM-355-Service-Manual(1) 电路图 维修手册.pdf
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1、 MCM355/12 Copyright 2009 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 prior pe
2、rmission of Philips. Published by SL 0915 Service Audio Printed in The Netherlands Subject to modification Micro System Version 1.0 CLASS 1 LASER PRODUCT 3141 785 33930 TABLE OF CONTENTS Page Location of PCBs .1-2 Specifi cations .1-3 Measurement Setup .1-4 Service Aids, Safety Instruction, etc .1-5
3、 CD Playability Check .1-6 to 1-7 Software Version Checking .2 Set Wiring & Block Diagram .3 Audio AMP Board .4 MCU & USB & Headphone Boards .5 Touch Panel & VFD & Power Key Boards .6 Set Mechanical Exploded View & Parts List .7 Revision List .8 RadioFans.CN 收音机爱 好者资料库 1-2 VERSION VARIATIONS Type /V
4、ersions: Board in used: MCM205 Service policy MAIN BOARD MCU BOARD USB JACK BOARD * TIPS : C - Component Lever Repair. M - Module Lever Repair - Used C /12 /05/55 89/ 16/85/ DISPLAY & KEY BOARD C C TUNER BOARDM x HEADPHONE BOARDC /37 C/M DISPLAY & KEY BOARD HEADPHONE BOARD MCU BOARD TUNER BOARD USB
5、BOARD MAIN BOARD PCBS LOCATION RadioFans.CN 收音机爱 好者资料库 Specifications Amplifier Rated Output Power 4X50W RMS Frequency Response 63 - 14000 Hz, 3dB Signal to Noise Ratio 62dB Disc Laser Type Semiconductor Disc Diameter 12cm/8cm Support Disc CD-DA, CD-R, CD-RW, MP3-CD, WMA-CD Audio DAC 24Bits / 44.1kH
6、z Total Harmonic Distortion65dBA Tuner (FM) Tuning Range 87.5 - 108 MHz Tuning grid 50 KHz Sensitivity - Mono, 26dB S/N Ratio 22 dBu Search Selectivity 28 dBu Total Harmonic Distortion 45 dB Speakers Speaker Impedance 6ohm General information AC power 220 - 230V, 50Hz Operation Power Consumption42W
7、Standby Power Consumption20W Eco Standby Power Consumption0.8W Dimensions - Main Unit (W x H x D) - Speaker Box (W x H x D) 173 x 257 x 240mm 173 x 257 x 240mm Weight - With Packing - Main Unit - Speaker Box 10.8 kg 2.3 kg 2 x 2.8 kg USB playability information Compatible USB devices: USB fl ash mem
8、ory (USB 2.0 or USB1.1) USB flash players (USB 2.0 or USB1.1) memory cards (requires an additional card reader to work with this MCM355) Supported formats: USB or memory fi le format FAT12, FAT16, FAT32 (sector size: 512 bytes) MP3 bit rate (data rate): 32-320 Kbps and variable bit rate WMA v9 or ea
9、rlier Directory nesting up to a maximum of 8 levels Number of albums/ folders: maximum 99 Number of tracks/titles: maximum 999 ID3 tag v2.0 or later File name in Unicode UTF8 (maximum length: 128 bytes) Unsupported formats: Empty albums: an empty album is an album that does not contain MP3/ WMA fi l
10、es, and is not be shown in the display. Unsupported file formats are skipped. For example, Word documents (.doc) or MP3 ?files with extension .dlf are ignored and not played. AAC, WAV, PCM audio ? files DRM protected WMA ? files (.wav, .m4a, .m4p, .mp4, .aac) WMA fi les in Lossless format Supported
11、MP3 disc formats ISO9660, Joliet Maximum title number: 512 (depending on file name length) Maximum album number: 255 Supported sampling frequencies: 32 kHz, 44.1kHz, 48 kHz Supported Bit-rates: 32256 (kbps), variable bit rates 1-3 RadioFans.CN 收音机爱 好者资料库 1-4 LEVEL METER e.g. Sennheiser UPM550 with F
12、F-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 distortion meter e.g. Sound Technology ST1700B Frame aerial e.g. 7122 707 89001 Tu
13、ner 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. PM5326 Ri=50 Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter e.g.
14、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 SETUP 1-5 SERVICE AIDS GBWARNING All ICs and many other semi-conductors are su
15、sceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connected 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 LA
16、SER PRODUCT GB Safety regulations require that the set be restored to its original condition and that parts which are identical with those specified, be used Safety components are marked by the symbol !. Lead free Set remains closed! N Y Play a CD for at least 10 minutes Y playability ok ? N playabi
17、lity ok ? add Info for customer SET OK check playability N Y playability ok ? check playability check playability return set Customer complaint CD related problem fast lens cleaning For flap loaders (= access to CD drive possible) cleaning method is recommended INSTRUCTIONS ON CD PLAYABILITY 1 - 6 E
18、xchange CDM -For description - see following pages PLAYABILITY CHECK For sets which are compatible with 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: Fingerpr
19、int10seconds Black dot from 00:50 to 01:10 jump forward/backward (search) within a reasonable time For 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
20、for: 1000 wedge10seconds Fingerprint10seconds Black dot from 01:05 to 01:25 jump forward/backward (search) within a reasonable time 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
21、 problem was obviously caused by a scratched, dirty or copy-protected CD. In case problems remain, the customer is requested to contact the workshop directly. The lens cleaning (method ) should be mentioned in the addendum sheet. The final wording in national language as well as the printing is unde
22、r responsibility of the Regional Service Organizations. LIQUID LENS CLEANING Because the material of the lens is synthetic and coated with a special anti-reflectivity layer, cleaning must be done with a non-aggressive cleaning fluid. It is advised to use “Cleaning Solvent The actuator is a very prec
23、ise mechanical component and may not be damaged in order to guarantee its full function. Clean the lens gently (dont press too hard) with a soft and clean cotton bud moistened with the special lens cleaner. The direction of cleaning must be in the way as indicated in the picture below. Before touchi
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