Philips AZ1852 Service Manual
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Philips AZ1852 Service Manual

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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
Main board
Circuit diagram ..................................................................5-1..5-2
Layout diagram ..................................................................5-3..5-4
Tuner board
Circuit diagram .........................................................................6-1
Layout diagram .........................................................................6-2
Control board
Circuit diagram .........................................................................7-1
Layout diagram .........................................................................7-2
Recording board
Circuit diagram.........................................................................8-1
Rectifier board
Circuit diagram .........................................................................9-1
Layout diagram .........................................................................9-2
Exploded view diagram ................................................................10-1
Revision list...................................................................................11-1
©
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 1028 Service Audio
Version 1.1
Subject to modification
AZ1852
-/61/93/79
3141 785 34931

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  • Page 1: Table Of Contents

    Revision list...................11-1 © 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 General Disc Power supply 110-127/220-240V, 50-60Hz; or DC Laser Type Semiconductor 6X1.5V / SIZE / R14 CELL Disc Diameter 12cm/8cm Opera on Power 25 W Support Disc CD-DA, CD-R, CD-RW, MP3-CD, Consump on WMA-CD Dimensions 400.5 x 172 x 242.5mm Audio DAC 24Bits / 44.1kHz...
  • 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

    3 - 1 3 - 1 SET BLOCK DIAGRAM...

  • Page 8: Wiring Diagram

    4 - 1 4- 1 SET WIRING DIAGRAM...
  • Page 9 5 - 1 5 - 1 CIRCUIT DIAGRAM - MAIN BOARD PART 1...
  • Page 10 5 - 2 5 - 2 CIRCUIT DIAGRAM - MAIN BOARD PART 2...
  • Page 11 5 - 3 5 - 3 LAYOUT DIAGARM - MAIN BOARD TOP SIDE VIEW...
  • Page 12 5 - 4 5 - 4 LAYOUT DIAGARM - MAIN BOARD BOTTOM SIDE VIEW...
  • Page 13 6 - 1 6 - 1 CIRCUIT DIAGARM - TUNER BOARD...
  • Page 14 6 - 2 6 - 2 LAYOUT DIAGRAM - TUNER BOARD...

  • Page 15: Circuit Diagram

    7 - 1 7 - 1 CIRCUIT DIAGRAM - CONTROL BOARD...
  • Page 16 7 - 2 7 - 2 LAYOUT DIAGRAM - CONTROL BOARD...

  • Page 17: Circuit Diagram

    8 - 1 8 - 1 CIRCUIT DIAGRAM - RECORDING BOARD...

  • Page 18: Circuit Diagram

    9 - 1 9 - 1 CIRCUIT DIAGRAM - RECTIFER BOARD...

  • Page 19: Layout Diagram

    9 - 2 9 - 2 LAYOUT DIAGRAM - RECTIFER BOARD...

  • Page 20: Exploded View Diagram

    10 - 1 10 - 1 EXPLODED VIEW DIAGRAM...

  • Page 21: Revision List

    11-1 REVISION LIST Version 1.0 (3141 785 34930) * Initial Release...

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