Philips-MCD-120-Service-Manual(1) 电路图 维修手册.pdf
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1、Version 1.1 MCD120 3141 785 34411 DVD Micro System -/96/98/93 Published by LX 0936 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 tra
2、nsmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips. CONTENTS Recordable ReWritable Technical specification .1-2 Version variation.1-2 Service measurement setup.1-3 Service aids .1-4 Instructions on CD playability .2-1. 2-
3、2 Block diagram .3-1 Wiring diagram .4-1 Display&Key board Circuit diagram .5-1 Layout diagram .5-2 Rectifier board Circuit diagram .6-1 Layout diagram .6-2 DVD board Circuit diagram .7-1.7-5 Layout diagram .7-6 AMP board Circuit diagram .8-1 Layout diagram .8-2 Exploded view diagram .9-1 Mechanical
4、 parts list .9-2 Electrical parts list.10-1 RadioFans.CN 收音机爱 好者资料库 REMOTE Distance6m Angle 30 SYSTEM Power supply220-240V / 50Hz Power consumption (1/8 rated output power) Active: 15 W Standby: 500 (TV) Dimensions (d x w x h) 249 mm x 247 mm x 54 mm Weight1.32 kg Speakers System1-way system Impedan
5、ce8ohm Dimensions (d x w x h) 144 mm x 124 mm x 181 mm Weight1.13 kg (each) TECHNICAL SPECIFICATION 1 - 2 RadioFans.CN 收音机爱 好者资料库 1-3 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 mete e.g.
6、 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 R DUT CD Use Audio Signal Disc (replaces test disc 3) SBC429 4822 397 30184 Bandpass 250Hz-15kHz e.g. 7122 707
7、 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-measurements have to be carried out in a Faradays cage. Use a bandpass filter (or at least a high pass filter with 250
8、Hz) 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.g. Sound Technology ST1700B Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilo
9、ttone (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 (ESD). Careless handling during repair can reduce life drastically. When repairing, make sure that you are con
10、nected 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
11、, 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 OK check playability N Y playability ok ? check playability check playability return set Customer complaint CD r
12、elated 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 description - see following pages 1 PLAYABILITY CHECK For sets which are compatible with CD-RW discs use CD-RW Printed
13、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 from 00:50 to 01:10 jump forward/backward (search) within a reasonable time For all other sets use CD-DA SBC 44
14、4A.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 wedge10seconds Fingerprint10seconds Black dot from 01:05 to 01:25 jump forward/backward (search) within a reasonable time 2
15、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, the customer is requested to cont
16、act 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 the Regional Service Organizations. 4 LIQUID LENS CLEANING Because the material of the lens is synthetic and co
17、ated 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 component and may not be damaged in order to guarantee its full function. Clean the lens gently (dont press too ha
18、rd) 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 is advised to clean the surface of the lens by blowing clean air over it. This to avoid that little particles make
19、 scratches on the lens. INSTRUCTIONS ON CD PLAYABILITY 2 - 2 SET BLOCK DIAGRAM 4 - 14 - 1 SET WIRING DIAGRAM 4 - 24- 2 5 - 15 - 1 CIRCUIT DIAGRAM - DISPLAY & KEY BOARD 5 - 25 - 2 LAYOUT DIAGARM - DISPLAY & Key BOARD CIRCUIT DIAGRAM - RECTIFIER BOARD 6 - 16 - 1 LAYOUT DIAGARM - RECTIFIER BOARD 6 - 26
20、 - 2 AFL AFR DA_R DA_L AFL AFR DA_R DA_L AGND AGND AVCC12 AGND AGND AGND AGND AGND AGND AGND AVCC12 AGND AGND AGND P+5V P+5V DVCC3 AVCC12 AGND AGND VREF3 VREF3 AVCC12 VREF3 AGND GND P+12V AUDIO_MUTE2 DA_R2 DA_L2 AFL1 AFR1 Power Off Mute Power On Mute POPOMUTE C201 R1322K R12470R12470 BC1 0.1uF BC1 0
21、.1uF 5 6 7 84 + - U1B NJM4558 + - U1B NJM4558 BC50 0.1uF BC50 0.1uF R1257.5KR1257.5K EC310uF/16VEC310uF/16V R6180R6180 R410KR410K EC1220u/16VEC1220u/16V C182pFC182pF C8 47pF C8 47pF R11 10K R11 10K D13 Zener/5V1 D13 Zener/5V1 EC2 10uF/16V EC2 10uF/16VC2 200pF C2 200pF C6 200pF C6 200pF R124 10K R124
22、 10K R81.2KR81.2K 2 13 Q3 2N3906 Q3 2N3906 R201.2KR201.2K R23 10K R23 10K 3 2 1 84 + - U1A NJM4558 + - U1A NJM4558Q4 2N3904 Q4 2N3904 C582pFC582pF EC4 10uF/16V EC4 10uF/16VC7 1200pF C7 1200pF R5NC/0R5NC/0 R10 3.3K R10 3.3K R1310KR1310K Q5 2N3904 Q5 2N3904 EC510uF/16VEC510uF/16V R327KR327K R17NC/0R17
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