Philips DC910 Service Manual

Specifications

Brand:	Philips
Category:	Docking Station
Model:	DC910 (Service Manual)
File Type:	PDF
File Size:	—
Pages:	27

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3141 785 32652

Docking Entertainment System DC910/37/12/05/98 Published by LX 0830 Service Audio Subject to modification © 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 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 ................................................................................4-1 Wiring diagram ..............................................................................4-2 Main board Circuit diagram .........................................................................5-1 Layout diagram ..................................................................5-2..5-3 MCU board Circuit diagram ..................................................................6-1..6-3 Layout diagram ..................................................................6-4..6-5 AUX board Circuit diagram .........................................................................7-1 Layout diagram .........................................................................7-2 Key board Layout diagram .........................................................................8-1 Exploded view diagram .................................................................9-1 Mechanical parts list ...............................................................9-2..9-3 Electrical parts list...............................................................10-1..10-3

Output power ....................................... 2 x 15 W RMS

Signal-to-noise ratio ....................................... ≥ 70 dBA Frequency response ...... 20 Hz – 20 KHz, ± 3 dB Input sensitivity AUX ....................... 0.5V (max. 2 V) Impedance loudspeakers ......................................... 4 Ω Impedance headphones ........................................ 32 Ω Output power headphones ....................... <50 mW TUNER FM wave range ................................... 87.5 – 108 MHz Antenna FM ....................................................................... 75 Ω wire USB PLAYER/SD/MMC CARD USB ................................................................... 12Mb/s,V1.1 ......................................... support MP3 and WMA files Number of albums/folders ................. maximum 99 Number of tracks/titles...................... maximum 400 GENERAL INFORMATION AC Power .................................100 – 240V, 50/60 Hz Dimensions (w x h x d) . 210 x 200 x 567 (mm) Weight .............................................................................. 3 kg Standby power consumption ............................<2 W Eco power standby .................................................<1 W Specifications and external appearance are subject to change without notice. TECHNICAL SPECIFICATION 1 - 2 Type /Versions: Features Board in used: DC910/DC910W Service policy MCU BOARD MAIN BOARD AUX BOARD KEY BOARD * TIPS : C -- Component Lever Repair. M -- Module Lever Repair -- Used /05 /12 /55 /98 /61 37 / Feature diffrence RDS VOLTAGE SELECTOR ECO STANDBY - DARK C C Type /Versions: DC910/DC910W /05 /12 /55 /98 /61 37 / C VERSION VARIATION 93 / 93 / C C C C C C C C C C C C C

Use Universal Test Cassette CrO2

SBC419 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 Fe SBC420 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. 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 Faraday´s 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 ST1700B Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz). Ri=50� Tuner FM MEASUREMENT SETUP

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 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, 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 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 description - see following pages

For sets which are compatible with CD-RW discs

use CD-RW Printed Audio Disc....................7104 099 96611 TR 3 (Fingerprint) TR 8 (600µ Black dot) maximum at 01:00 • playback of these two tracks without audible disturbance playing time for: Fingerprint 10seconds 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 (600µ Black dot) maximum at 01:15 TR 19 (Fingerprint) TR 10 (1000µ wedge) • playback of all these tracks without audible disturbance playing time for: 1000µ wedge 10seconds Fingerprint 10seconds 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 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 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 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 guarantee its full function. Clean the lens gently (don’t 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 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