Philips-MCB-395-Service-Manual(1) 电路图 维修手册.pdf
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1、 MCB395/05 Copyright 2008 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 0820 Service Audio Printed in The Netherlands Subject to modification DAB Micro System Version 1.0 CLASS 1 LASER PRODUCT 3141 785 32850 TABLE OF CONTENTS Page PCBs Location & Version Variations .1-2 Specifi cations .1-3 Measurement Setup .1-4 Service Aids, Safety
3、 Instruction, etc .1-5 to 1-7 Software Version Checking .2 Set Block Diagram .3 Set Wiring Diagram .4 Main Board & MCU Board .5 Key & LCD Board .6 Power Board .7 Power AMP Board .8 ECO Power Board .9 Headphone & AUX & USB Board .10 Set Mechanical Exploded View & Parts List . 11 RadioFans.CN 收音机爱 好者资
4、料库 KEY & LCD BOARD ECO POWER BOARD MAIN BOARD POWER BOARD POWER AMP BOARD /12 /58 n iRDC/n ixuA Line Out Video Out Subwoofer Out Digital Out Karaoke Features Voltage Selector ECO Power Standby (LCD Display Off) USB Direct Type /Versions: MCB395 Features in used: /05 VERSION VARIATIONS Type /Versions
5、: Board in used: MCB395 Service policy MAIN BOARD POWER BOARD POWER AMP BOARD ECO POWER BOARD * TIPS : C - Component Lever Repair. M - Module Lever Repair - Used C /12 /05855/9/16/85/ Feature diffrence KEY & LCD BOARD C C C DAB MODULEM x x x 1 - 2 PCBS LOCATION USB & AUX & HP BOARDC C MCU BOARD MCU
6、BOARDC RadioFans.CN 收音机爱 好者资料库 1 - 3 AMPLIFIER Output power .2 x 50 W RMS .100 W + 100 W MPO Signal-to-noise ratio. ? 62 dBA (IEC) Frequency response .40 15000 Hz, 3 dB Impedance loudspeakers . 4 ? Impedance headphones .32 ? -1000 ? CD/MP3-CD PLAYER Number of programmable tracks . 20 Frequency range
7、 . 20 20000 Hz Signal-to-noise ratio. 75 dBA Channel separation .? 50 dBA (1 kHz) Total harmonic distortion.? 0.5% MPEG 1 Layer 3 (MP3-CD) .MPEG AUDIO MP3-CD bit rate . 32-256 kbps (128 kbps advised) Sampling frequencies .32, 44.1, 48 kHz USB PLAYER USB . 12Mb/s, V1.1 Number of albums/folders .maxim
8、um 99 Number of tracks/titles.maximum 999 TUNER FM wave range .87.5 108 MHz Sensitivity at 75 ? mono, 26 dB signal-to-noise ratio . 2.8 V stereo, 46 dB signal-to-noise ratio . 61.4 V Total harmonic distortion. ? 5% Frequency response . 63 12500 Hz ( 3 dB) Signal-to-noise-ratio . ? 50 dBA DAB wave ra
9、nge .174-240 MHz SPEAKERS 2-way Bass reflex system GENERAL INFORMATION AC Power .220 230 V / 50 Hz Standby Power Consumption .? 7W ECO Standby Power Consumption .? 1W Dimensions (w x h x d) Main unit (w x h x d) . 152 x 228 x 285 mm Speaker box (w x h x d) 152 x 228 x 257 mm Weight With Packing . 8.
10、92 kg Main Unit . 3.66 kg Speaker box . 4.13 kg Specifications and external appearance are subject to change without notice. SPECIFICATIONS RadioFans.CN 收音机爱 好者资料库 1 - 4 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 Sign
11、al 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-measurements have to be carried
12、 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.g. Sound Technology ST17
13、00B 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 susceptible to electrostatic discharges (ESD). Careless handling during repair can redu
14、ce 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 require that the set be restored to its original co
15、ndition 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 OK check playability N Y playability ok ? check p
16、layability 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 1 - 6 Exchange CDM 1- 4 For description - see following pages 1 PLAYABILITY CHECK Fo
17、r 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 from 00:50 to 01:10 jump forward/backward (searc
18、h) 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 wedge10seconds Fingerprint10seconds Black dot from 01:05 to 0
19、1:25 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 obviously caused by a scratched, dirty or copy-protected
20、 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 the Regional Service Organizations. 4 LIQUID LEN
21、S 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 component and may not be damaged in order to guaran
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