Philips-AZ-1048-Service-Manual(1) 电路图 维修手册.pdf

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1、Version 1.0 AZ1048 3141 785 35540 USB CD Soundmachine -/55 Published by SW 1034 Service Audio Subject to modification Copyright 2010 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 transm

2、itted, 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 Block diagram .3-1 Wiring diagram .4-1 Main b

3、oard Circuit diagram .5-1 Layout diagram .5-2.5-3 Tuner board Circuit diagram .6-1 Control board Circuit diagram .7-1 Layout diagram .7-2 Rectifier board Circuit diagram .8-1 Layout diagram .8-2 Exploded view diagram .9-1 Revision list .10-1 RadioFans.CN 收音机爱 好者资料库 TECHNICAL SPECIFICATION 1 - 2 Tape

4、 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 General Dimensions (main unit) (W x H x D) 320 x 275 x 175 mm Weight (main unit) 1.7 kg y l ppusrewoPDC: 9V 1.5A AC: 230V Power consumption - Active - Sta

5、ndby 12 W 0.7W tuptuorewoP1W x 2 RMS Operating temperature range - 10 C - +50 C 14 F - 122 F Disc epyTresaLSemiconductor re tema iDcs iD12cm/8cm cs iDt roppuSCD-DA, CD-R, CD-RW, MP3-CD, WMA-CD CADo iduA24Bits / 44.1kHz Total Harmonic Distortion 62dBA Tuner egnaRgn i nuTFM: 87.5 - 108MHz; MW: 530 - 1

6、600kHz Total Harmonic Distortion 50 dB 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. Sound Technology ST170 L R DUT or Universal Test Cassette FeSBC420

7、 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 distortion meter e.g. S

8、ound 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. PM5326 Ri=50?

9、 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 SETUP RadioFans.C

10、N 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 connected with the same potential as the mass of the set via a wrist w

11、rap 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 used Safety components are marked by the symbol !. Lead free S

12、et 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 related problem fast lens cleaning 1 2 3 For flap loaders (= access

13、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 Audio Disc.7104 099 96611 TR 3 (Fingerprint) TR 8 (600 Black dot) m

14、aximum 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 444A.4822 397 30245 TR 14 (600 Black dot) maximum at 01:15 TR 19 (Fin

15、gerprint) 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 CUSTOMER INFORMATION It is proposed to add an addendum sheet to the

16、 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 contact the workshop directly. The lens cleaning (method 3) should be m

17、entioned 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 coated with a special anti-reflectivity layer, cleaning must be done

18、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 hard) with a soft and clean cotton bud moistened with the special len

19、s 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 scratches on the lens. INSTRUCTIONS ON CD PLAYABILITY 2 - 2 SET BL

20、OCK DIAGRAM 3 - 13 - 1 SET WIRING DIAGRAM 4 - 14- 1 5 - 15 - 1 CIRCUIT DIAGRAM - MAIN BOARD 5 - 2 LAYOUT DIAGARM - MAIN BOARD TOP SIDE VIEW 5 - 2 LAYOUT DIAGARM - MAIN BOARD BOTTOM SIDE VIEW 5 - 35 - 3 CIRCUIT DIAGARM - TUNER BOARD 6 - 16 - 1 CIRCUIT DIAGRAM - CONTROL BOARD 7 - 17 - 1 LAYOUT DIAGRAM - CONTROL BOARD 7 - 27 - 2 CIRCUIT DIAGRAM - RECTIFER BOARD 8 - 18 - 1 LAYOUT DIAGRAM - RECTIFER BOARD 8 - 28 - 2 EXPLODED VIEW DIAGRAM 9 - 19 - 1 10 - 1 Revision list Version1.0 (3141 785 35540) *Initial Release