Philips-MCM-330-Service-Manual(1) 电路图 维修手册.pdf
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1、Version 1.1 MCM330 3141 785 33951 Micro Hi-Fi System -/12 Published by LX 0915 Service Audio Subject to modification 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 transmi
2、tted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips. CONTENTS Technical specification .1-2 Version variation.1-2 Service measurement setup.1-3 Service aids .1-4 Instructions on CD playability .2-1. 2-2 Block diagram .3-1 Wirin
3、g diagram .4-1 Disassembly diagram. .5-1 Power board Circuit diagram .6-1.6-3 Layout diagram .6-4.6-5 CD board Circuit diagram .7-1 Layout diagram .7-2.7-3 Display board Circuit diagram .8-1 Layout diagram .8-2.8-3 MCU board Circuit diagram .9-1 Layout diagram .9-2.9-3 Key board Circuit diagram .10-
4、1 Layout diagram .10-2 Exploded view diagram .11-1 Mechanical parts list .11-2 Electrical parts list.12-1.12-2 RadioFans.CN 收音机爱 好者资料库 Disc Laser typeSemiconductor Disc diameter12cm/8cm Support discCD-DA, CD-R, CD-RW, MP3-CD, WMA-CD Audio DAC24Bits / 44.1kHz Total harmonic distortion 75dBA Tuner Tun
5、ing rangeFM: 87.5 - 108MHz Tuning grid50KHz Number of presets20 FM Speakers Speaker Driver3.5”woofer+0.8” tweeter Sensitivity82dB/m/W General information AC power (power adaptor) Input: 100-240V, 50/60Hz, 1.5A Max.; Output: 18V 2.5A; Brand name: Philips; Model: OH- 1048B1802500U-VDE Operation Power
6、Consumption 20W Standby Power Consumption 2W Eco Power Standby Power Consumption 65dB MP3 link input0.5 V RMS 20kohm TECHNICAL SPECIFICATION 1 - 2 Type /Versions: Features Board in used: MCM330 Service policy DISPLAY BOARD * TIPS : C - Component Lever Repair. M - Module Lever Repair - Used /05/12/55
7、 89/16/85/ Feature diffrence RDS & DAB VOLTAGE SELECTOR ECO STANDBY - DARK Type /Versions: /05/12/55 89/16/85/ VERSION VARIATION 39/ 39/ C CD BOARD KEY BOARD POWER BOARD USB & SD CARD BOARD MCU BOARD C C C C C MCM330 RadioFans.CN 收音机爱 好者资料库 1-3 LF Generator e.g. PM5110 Recorder Use Universal Test Ca
8、ssette CrO2SBC419 4822 397 30069 LEVEL METER e.g. Sennheiser UPM550 with FF-filter S/N and distortion mete e.g. Sound Technology ST170 L R DUT or Universal Test Cassette FeSBC420 4822 397 30071 LEVEL METER e.g. Sennheiser UPM550 with FF-filter S/N and distortion meter e.g. Sound Technology ST1700B L
9、 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 Tuner AM (MW,LW) To avoid atmospheric interference all AM-measure
10、ments 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. PM2534 DUT RF Generator e.g. PM5326 S/N and distortion meter e
11、.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 RadioFans.CN 收音机爱 好者资料库 1-4 SERVICE AIDS GBWARNING All ICs and many other semi-conductors are susceptible to electrostatic discharges
12、 (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 LASER PRODUCT GB Safety regulations req
13、uire 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 playability ok ? add Info for customer SET O
14、K check playability N Y playability ok ? check playability check playability return set Customer complaint CD related problem fast lens cleaning 1 2 3 For flap loaders (= access to CD drive possible) cleaning method 4 is recommended INSTRUCTIONS ON CD PLAYABILITY 2 - 1 Exchange CDM 1- 4 For descript
15、ion - see following pages 1 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: Fingerprint10seconds Black dot
16、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 for: 1000 wedge10second
17、s Fingerprint10seconds Black dot from 01:05 to 01:25 jump forward/backward (search) 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 obviousl
18、y 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 3) should be mentioned in the addendum sheet. The final wording in national language as well as the printing is under responsibility of
19、the Regional Service Organizations. 4 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 precise mechanical com
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