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Micro Hi-Fi System
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
Disassembly diagram............ ........................................................5-1
Circuit diagram ..................................................................6-1..6-5
Layout diagram..................................................................6-6..6-7
MCU board
Circuit diagram .........................................................................7-1
Layout diagram..................................................................7-2..7-3
Display & Key board
Circuit diagram .........................................................................8-1
Layout diagram..................................................................8-2..8-3
Circuit diagram .........................................................................9-1
Layout diagram.........................................................................9-2
Ipod Jack & SW board
Circuit diagram .......................................................................10-1
Layout diagram....................................................................... 11-1
Exploded view diagram ...............................................................12-1
Mechanical parts list ....................................................................12-2
Electrical parts list...............................................................13-1..13-2
Revision list...................................................................................14-1
©
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 transmitted, in any form or by any means, electronic, mechanical, photocopying,
or otherwise without the prior permission of Philips.
Published by LX 1003 Service Audio
Version 1.2
Subject to modification
DCM276
-/05/55
3141 785 34202

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Summary of Contents for Philips DCM 276 Series

  • Page 1: Table Of Contents

    Revision list...................14-1 © 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 transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips.
  • Page 2: Technical Specification

    1 - 2 TECHNICAL SPECIFICATION Speakers Amplifier Speaker driver 4” woofer Total output power 2 x 5 W RMS Speaker impedance 5 W, 3 Frequency 125 Hz - 16 kHz, ± 3 dB response Signal to noise ratio > 60 dB General information MP3 link input 0.5 V RMS 20 k...
  • Page 3 MEASUREMENT SETUP Tuner FM Bandpass LF Voltmeter 250Hz-15kHz e.g. PM2534 e.g. 7122 707 48001 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). Tuner AM (MW,LW) Bandpass LF Voltmeter...
  • Page 4: Service Aids

    SERVICE AIDS WARNING 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.
  • Page 5: Instructions On Cd Playability

    2 - 1 INSTRUCTIONS ON CD PLAYABILITY Customer complaint "CD related problem" Set remains closed! check playability playability ok ? For flap loaders (= access to CD drive possible) "fast" lens cleaning cleaning method is recommended check playability playability ok ? Play a CD for at least 10 minutes check playability...
  • Page 6 2 - 2 INSTRUCTIONS ON CD PLAYABILITY PLAYABILITY CHECK LIQUID LENS CLEANING Before touching the lens it is advised to clean the surface of the lens by blowing clean air over it. For sets which are compatible with CD-RW discs This to avoid that little particles make scratches on use CD-RW Printed Audio Disc ....7104 099 96611 the lens.
  • Page 7: Block Diagram

    SET BLOCK DIAGRAM...
  • Page 8: Wiring Diagram

    SET WIRING DIAGRAM...
  • Page 10 CIRCUIT DIAGRAM - MAIN BOARD PART 1...
  • Page 11 CIRCUIT DIAGRAM - MAIN BOARD PART 2...
  • Page 12 CIRCUIT DIAGRAM - MAIN BOARD PART 3...
  • Page 13 CIRCUIT DIAGRAM - MAIN BOARD PART 4...
  • Page 14 CIRCUIT DIAGRAM - MAIN BOARD PART5...
  • Page 15 LAYOUT DIAGRAM - MAIN BOARD AND SOME SMALL BOARD TOP SIDE...
  • Page 16 LAYOUT DIAGRAM - MAIN BOARD AND SOME SMALL BOARD BOTTOM SIDE...
  • Page 17 CIRCUIT DIAGRAM - MCU BOARD...
  • Page 18 LAYOUT DIAGRAM - MCU BOARD TOP SIDE...
  • Page 19 LAYOUT DIAGRAM - MCU BOARD BOTTOM SIDE...
  • Page 20 CIRCUIT DIAGRAM - DISPLAY BOARD AND KEY BOARD...
  • Page 21 LAYOUT DIAGRAM - DISPLAY BOARD...
  • Page 22 LAYOUT DIAGRAM - KEY BOARD...
  • Page 23 CIRCUIT DIAGRAM - POWER BOARD...
  • Page 24 LAYOUT DIAGRAM - POWER BOARD...
  • Page 25 10-1 10-1 CIRCUIT DIAGRAM - iPod JACK BOARD...
  • Page 26 10-2 10-2 LAYOUT DIAGRAM - iPod JACK BOARD...
  • Page 27 11-1 11-1 CIRCUIT DIAGRAM - SW BOARD LAYOUT DIAGRAM - SW BOARD...
  • Page 28 12-1 12-1 SET EXPLODED VIEW...
  • Page 29 12 - 2 1231 996510002033 SCREW SPACE(DOWELS) LEFT 996510031671 SPK FRONT 996510031658 RIGHT SPK FRONT 996510026752 DRAWER BASE 996510026725 REAR CABINET (-/05) 996510029312 REAR CABINET (-/55) 996510026706 CD TRAY 996510026708 DOOR HOLDER -LEFT 996510026753 DOOR HOLDER -RIGHT 996510026732 DOUBLE BRACKET 996510026721 HOLDER CDM TOP 996510026745...
  • Page 30: Main Board

    13 - 1 ELECTRICAL PARTSLIST MAIN BOARD ASSEMBLY USB901 996510026748 USB SOCKET 4P USB-1400-060-010 X101 996500042441 X'TAL 32.768KHZ -20PPM X801 994000004551 CRYSTAL 16.9344MHZ +-20PPM JK902 994000004369 PHONE JACK TC38-063-05-0 JK903 996510012048 PHONE JACK D3.6mm P801 996510023905 OPTIC SENSER FM-9038TM2-5AN Q105 996510020216 TRANSISTORS D882F Q118...
  • Page 31 13 - 2 ELECTRICAL PARTSLIST SW BOARD ASSEMBLY S801 994000004552 DETECT SWITCH S802 994000004552 DETECT SWITCH IPOD JACK BOARD ASSEMBLY IPOD901 996510018114 IPOD SOCKET 0.5MM 30P 180C MCU BOARD ASSEMBLY IC191 996510015481 IC HT1381 IC601 996510020772 IC SI636165TS IC602 996510022969 IC HWD809R 2.63V IC603 996510021319...
  • Page 32: Revision List

    14-1 REVISION LIST Version 1.0 (314178534200) * Initial Release Version 1.1 (314178534201) * P12-2 :AC cord set (-/55) 12NC is changed Added SCREW (accessory). V Version 1.2 (314178534202) * P12-2 :Change LEFT and RIGHT SPK Front for both /05 and /55;...

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