Philips MCB146 Service Manual
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Micro Hi-Fi System
CONTENTS
Technical specification ..................................................................1-2
Version variation... ........................................................................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..5-3
Layout diagram ..................................................................5-3..5-4
MCU board
Circuit diagram .........................................................................6-1
Layout diagram .........................................................................6-2
Exploded view diagram .................................................................7-1
Mechanical parts list ......................................................................7-2
Electrical parts list...................................................................8-1..8-2
©
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.
Published by LX 0815 Service Audio
Version 1.0
Subject to modification
MCB146
-/05
3141 785 32640

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Summary of Contents for Philips MCB146

  • Page 1: Table Of Contents

    Electrical parts list..............8-1..8-2 © 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.
  • Page 2: Technical Specification

    – FM 26 dB sensitivity .......... 20 µV Total harmonic distortion ........≤ 5% Specifications and external appearance are subject to change without notice. VERSION VARIATION Type /Versions: MCB146 Service policy Board in used: DISPLAY BOARD MAIN BOARD Type /Versions:...
  • 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: Disassembly Diagram

    3 - 1 3 - 1 DISASSEMBLY DIAGRAM VIEW...
  • Page 8: Block Diagram

    4 - 1 4 - 1 SET BLOCK DIAGRAM...
  • Page 9: Wiring Diagram

    4 - 2 4- 2 SET WIRING DIAGRAM...
  • Page 10: Circuit Diagram

    5 - 1 5 - 1 CIRCUIT DIAGRAM - MAIN BOARD CD PART...
  • Page 11 5 - 2 5 - 2 CIRCUIT DIAGRAM - MAIN BOARD AMP & POWER SUPPLY PART...
  • Page 12 5 - 3 5 - 3 CIRCUIT DIAGRAM - MAIN BOARD TUNER PART...
  • Page 13 5 - 3 5 - 3 LAYOUT DIAGARM - MAIN BOARD COMPONENT SIDE VIEW...
  • Page 14 5 - 4 5 - 4 LAYOUT DIAGARM - MAIN BOARD COPPER SIDE VIEW...
  • Page 15 6 - 1 6 - 1 CIRCUIT DIAGRAM - MCU BOARD...
  • Page 16 6 - 2 6 - 2 LAYOUT DIAGARM - MCU BOARD...
  • Page 17: Exploded View Diagram

    7 - 1 7 - 1 EXPLODED VIEW DIAGRAM...
  • Page 18: Mechanical Partslist

    7 - 2 MECHANICAL PARTSLIST 994000005398 CD MECHANISM DA11B3VF 996510013796 LCD BRACKET 996510008372 LCD LIGHT GUIDE 994000003674 CD DOOR SPRING 996510008373 FRONT CABINET 996510013802 REAR CABINET 996510006656 CD TRAY 996510013803 AC CORD BRACKET 996510008374 CD DOOR 996500039787 LASER COVER (FOR SANYO CD) 996510013804 DBB BUTTON COVER 996510013807...
  • Page 19: Electrical Partslist

    8 - 1 ELECTRICAL PARTSLIST MAIN BOARD ASSEMBLY 996510000323 SMD DIODE BAS316 994000003938 RECTIFIER DIODE RL-202 994000003938 RECTIFIER DIODE RL-202 994000003938 RECTIFIER DIODE RL-202 994000003938 RECTIFIER DIODE RL-202 996510006827 IC (SANYO) LA6541NHL-TE-L-E 996500039806 IC ET2314 (SOP28) 996510006828 IC (SANYO) LA9242M-MPB-E 996510006829 IC (SANYO) LC78602RE-8616 996510000315...
  • Page 20 8 - 2 ELECTRICAL PARTSLIST MCU BOARD ASSEMBLY 996500042438 LED LAMP 2x5x7mm (WHITE) 994000004367 OPTIC SENSER FM-6038TM2-5AN 996500042444 TACT SWITCH 6x6mm 4.3mm SW10 996500042444 TACT SWITCH 6x6mm 4.3mm SW11 996500042444 TACT SWITCH 6x6mm 4.3mm SW12 996500042444 TACT SWITCH 6x6mm 4.3mm SW13 996500042444 TACT SWITCH 6x6mm 4.3mm...

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Mcb146/05

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