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Philips FWM208 Service Manual

120w mini hi-fi system
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120W Mini 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...............................................................................3-2
AMP board
Circuit diagram .........................................................................4-1
Layout diagram ..................................................................4-2..4-5
LCD board
Circuit diagram .........................................................................5-1
Layout diagram ..................................................................5-2..5-3
©
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 1010 Service Audio
Version 1.1
Subject to modification
CD board
Circuit diagram ..................................................................6-1..6-2
Layout diagram ..................................................................6-3..6-4
Exploded view diagram .................................................................7-1
Revision list....................................................................................8-1
FWM208
-/55/77
3141 785 34921

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Summary of Contents for Philips FWM208

  • Page 1: Table Of Contents

    Layout diagram ..............5-2..5-3 © 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 Amplifier Tuner Rated Output Power 4X30W RMS Frequency Response 63 - 16000 Hz, ±3dB Tuning Range 87.5 - 108 MHz Signal to Noise Ratio >62dB Tuning grid 50 KHz Sensitivity <22 dBu - Mono, 26dB S/N Ratio <45 dBu Disc - Stereo, 46dB S/N Ratio...
  • Page 3: Measurement Setup

    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

    3 - 1 3 - 1 SET BLOCK DIAGRAM...
  • Page 8: Wiring Diagram

    3 - 2 3 - 2 SET WIRING DIAGRAM...
  • Page 9 4 - 1 4 - 1 CIRCUIT DIAGRAM - AMP BOARD...
  • Page 10 4 - 2 4 - 2 LAYOUT DIAGARM - AMP BOARD TOP SIDE VIEW...
  • Page 11 4 - 3 4 - 3 LAYOUT DIAGARM - AMP BOARD BOTTOM SIDE VIEW...
  • Page 12 4 - 4 4 - 4 LAYOUT DIAGARM - AMP BOARD(OUTPUT PART) TOP SIDE VIEW...
  • Page 13 4 - 5 4 - 5 LAYOUT DIAGARM - AMP BOARD(OUTPUT PART) BOTTOM SIDE VIEW...
  • Page 14 5 - 1 5 - 1 CIRCUIT DIAGARM - LCD BOARD R631 R634 R643 R625 R624 R633 R632 150R CN603 CN601 CN602 TO KEY BD (2) TO MAIN BD C613 KEY3 KEY2 KEY1 R630 LCD_DATA EQ BOARD PART R628 LCD_W/R R629 LCD_CS REMOTE...
  • Page 15 5 - 2 5 - 2 LAYOUT DIAGRAM - LCD BOARD TOP SIDE VIEW...
  • Page 16 5 - 3 5 - 3 LAYOUT DIAGARM - LCD BOARD BOTTOM SIDE VIEW...
  • Page 17 6 -1 6 - 1 CIRCUIT DIAGARM - CD BOARD PART 1 C240 102P M3.3V R102 M3.3V IN4148 ET4334 D8563 R192 IN4148 EC133 C191 3V3SD MUTE1 470/10 SOP-8 LINE_L X102 OSCI 32.768K SCLK TEST CLKOUT OSCO C192 LRCK AUD_GND BC133 MCLK LINE_R 3V3SD...
  • Page 18: Circuit Diagram

    6 - 2 6 - 2 CIRCUIT DIAGRAM - CD BOARD PART 2...
  • Page 19 6 - 3 6 - 3 LAYOUT DIAGARM - CD BOARD TOP SIDE VIEW...
  • Page 20 6 - 4 6 - 4 LAYOUT DIAGARM - CD BOARD BOTTOM SIDE VIEW...
  • Page 21: Revision List

    8 - 1 Revision list Version1.0 (3141 785 34920) First release Version1.1 (3141 785 34921) Add /77...

This manual is also suitable for:

Fwm208/55Fwm208/77