Philips-MCD-170-Service-Manual(1) 电路图 维修手册.pdf
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1、Version 1.2 MCD170 3141 785 33302 DVD Micro Theater -/98/12/58 Published by LX 0923 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 tr
2、ansmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips. CONTENTS Technical specification .1-2 Service measurement setup.1-3 Service aids .1-4 Instructions on CD playability .2-1.2-2 Disassembly diagram. .,.3-1 Block diagram.
3、4-1 Wiring diagram .4-2 Main board Circuit diagram .5-1.5-2 Layout diagram.5-3.5-4 Front board Circuit diagram .6-1 Layout diagram.6-2.6-3 Tape board Circuit diagram .7-1 Layout diagram.7-2.7-3 DVD board Circuit diagram .8-1.8-5 Layout diagram.8-6 Exploded view diagram .9-1 Mechanical parts list.9-2
4、.9-3 Electrical parts list.10-1 RadioFans.CN 收音机爱 好者资料库 Tuner Tuning RangeFM: 87.5 - 108 MHz; MW: 531 - 1602 kHz Tuning grid50 kHz (FM); 9 kHz (MW) FM Sensitivity - Mono, 26dB S/N Ratio - Stereo, 46dB S/N Ratio 43 dBf Search Selectivity28 dBf Total Harmonic Distortion 55dB Tape deck Frequency respon
5、se - Normal tape (type I) 125 - 8000 Hz (8 dB) Signal-to-noise ratio - Normal tape (type I) 40 dBA Wow and ? utter82dB/m/W Amplifier Rated Output Power 2X5W RMS Frequency Response 60 - 16kHz, 3dB Signal to Noise Ratio 65dB Aux Input0.5 V RMS 20kohm Disc Laser TypeSemiconductor Disc Diameter12cm/8cm
6、Video DecodingMPEG-2/MPEG-1 Video DAC10 Bits Signal SystemPAL/NTSC Video Format4:3/16:9 Video S/N56 dB (minimum) Composite Video Output 1.0 Vp-p, 75 ohm S-Video outputY- 1.0 Vp-p, 75 ohm C- 0.286 Vp-p, 75 ohm Audio DAC24Bits / 96 kHz Total Harmonic Distortion 1% Frequency Response 4 Hz - 20 kHz (44.
7、1kHz) 4 Hz - 22 kHz (48 kHz) 4 Hz - 44 kHz (96 kHz) Digital OutputSPDIF (Sony Philips digital interface) coaxial Total harmonic distortion 65dBA 1 - 2 TECHNICAL SPECIFICATIONS Type /Versions: Features Board in used: MCD170 Service policy FRONT BOARD MAIN BOARD DVD BOARD TAPE BOARD * TIPS : C - Compo
8、nent Lever Repair. M - Module Lever Repair - Used /05/12/55 89/16/85/ Feature diffrence RDS VOLTAGE SELECTOR ECO STANDBY - DARK C C Type /Versions: MCD170 /05/12/55 89/16/85/ M VERSION VARIATION C C 39/ 39/ M M M C C M M RadioFans.CN 收音机爱 好者资料库 1-3 LF Generator e.g. PM5110 Recorder Use Universal Tes
9、t Cassette 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 ST170
10、0B 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 Tuner AM (MW,LW) To avoid atmospheric interference all AM-mea
11、surements 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 met
12、er 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 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 discha
13、rges (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
14、 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 playability ok ? add Info for customer S
15、ET OK 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 desc
16、ription - 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
17、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 for: 1000 wedge10se
18、conds 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 obvi
19、ously 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
20、 of 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
21、 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 touching the lens it
22、 is advised to clean the surface of the lens by blowing clean air over it. This to avoid that little particles make scratches on the lens. INSTRUCTIONS ON CD PLAYABILITY 2 - 2 DISASSEMBLY DIAGRAM VIEW 3 - 13 - 1 SET BLOCK DIAGRAM 4 - 14 - 1 SET WIRING DIAGRAM 4 - 24- 2 5 - 15 - 1 CIRCUIT DIAGRAM - M
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