Philips MCB275/05 Service Manual
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Philips MCB275/05 Service Manual

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TABLE OF CONTENTS

Location of PC Boards & Versions Variation ........................ 1-2
Specifi cations ....................................................................... 1-3
Measurement Setup ............................................................. 1-4
Service Aids, Safety Instruction, etc ..................................... 1-5
CD Playability Check ..................................................1-6 to 1-8
Disassembly Instructions & Service positions ......................... 2
Service Test Program ........................................................... 3-1
Set Block Diagram ................................................................ 4-1
Set Wiring Diagram .............................................................. 5-1
Main Board .............................................................................. 6
Key & LCD Board .................................................................... 7
CD & MCU Board .................................................................... 8
Mechanical Exploded View & Parts List .................................. 9
Revision list ........................................................................... 10
©
Copyright 2007 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 SL0732 Service Audio
Version 1.2
All manuals and user guides at all-guides.com
Printed in The Netherlands Subject to modifi cation.
Page
CLASS 1
LASER PRODUCT
MCB275
/05
GB
3141 785 31772

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  • Page 1: Table Of Contents

    LASER PRODUCT © Copyright 2007 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 All manuals and user guides at all-guides.com VERSION VARIATIONS VERSION VARIATIONS: Type /Versions: MCB275 Features & Board in used: Line Out Video Out Surround Out Subwoofer Out Power Booster Out Digital Out Digital in Matrix Surround Dolby Pro Logic (DPL) Incredible Surround Karaoke Features Voltage Selector...
  • Page 3 All manuals and user guides at all-guides.com SPECIFICATIONS GENERAL: Mains voltage : 127/240V -15%+10% Switchable for /98 Dynamic Bass Boost (DBB) : ON / OFF 120V ± 10% for /37 Input sensitivity 230V ± 10% for /05/12 Aux in (at 1kHz) : 500mV at 600 Ω Mains frequency : 50/60Hz USB : Host...

  • Page 4: Measurement Setup

    All manuals and user guides at all-guides.com 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 5 All manuals and user guides at all-guides.com SERVICE AIDS Compact Disc: Service Tools: SBC426/426A Test disc 5 + 5A ......4822 397 30096 Universal Torx driver holder .........4822 395 91019 SBC442 Audio Burn-in test disc 1kHz ....4822 397 30155 Torx bit T10 150mm ...........4822 395 50456 SBC429 Audio Signals disc .........4822 397 30184 Torx driver set T6-T20 .........4822 395 50145 Dolby Pro-logic Test Disc ........4822 395 10216...

  • Page 6: Cd Playability Check

    All manuals and user guides at all-guides.com CD PLAYABILITY CHECK 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 Standard repair procedure playability ok ?
  • Page 7 All manuals and user guides at all-guides.com CD PLAYABILITY CHECK 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 8 All manuals and user guides at all-guides.com CD PLAYABILITY CHECK EYE-PATTERN SIGNAL – JITTER MEASUREMENT CD DRIVE – LASER CURRENT MEASUREMENT Measure the signal on the input of the Signal processor The laser current can be measured as a voltage drop on a using an analog oscilloscope.
  • Page 9 All manuals and user guides at all-guides.com DISMANTLING INSTRUCTIONS Dismantling the Rear Portion and PCBs Dismantling the Rear Portion and PCBs 1) Press the 2 juts and pull out the Stand as shown in figure 5) Loosen 2 screws E to remove the Bracket Jack Board as shown in Figure 4.
  • Page 10 All manuals and user guides at all-guides.com Dismantling of the CD Module & CD Door Carrier Service pos A 1) Loosen 5 screws J mounting the Key Board to the Front Cabinet to remove the Key Board as shown in figure 8. 2) Loosen 4 screws H and 3 screws G to CD Module as shown in figure 8.

  • Page 11: Service Test Program

    All manuals and user guides at all-guides.com SERVICE TEST PROGRAM To enter Service * Door switch is ignored → CD door can be opened. Testprogram hold PLAY & Door Open/Close buttons depressed while plugging mainscord in. Display shows the MCU version V refers to Version "MCU-Vyy"...

  • Page 12: Set Block Diagram

    All manuals and user guides at all-guides.com SET BLOCK DIAGRAM...

  • Page 13: Set Wiring Diagram

    All manuals and user guides at all-guides.com SET WIRING DIAGRAM...
  • Page 14 All manuals and user guides at all-guides.com PCB LAYOUT - MAIN BOARD (TOP VIEW)
  • Page 15 All manuals and user guides at all-guides.com PCB LAYOUT - MAIN BOARD (BOTTOM VIEW)
  • Page 16 All manuals and user guides at all-guides.com CIRCUIT DIAGRAM - MAIN BOARD AUDIO PART...
  • Page 17 All manuals and user guides at all-guides.com CIRCUIT DIAGRAM - MAIN BOARD FM TUNER PART...
  • Page 18 All manuals and user guides at all-guides.com CIRCUIT DIAGRAM - MAIN BOARD SUB MCU PART...
  • Page 19 All manuals and user guides at all-guides.com CIRCUIT DIAGRAM - MAIN BOARD INTERFACE PART...
  • Page 20 All manuals and user guides at all-guides.com CIRCUIT DIAGRAM - MAIN BOARD DAB PART...
  • Page 21 All manuals and user guides at all-guides.com CIRCUIT DIAGRAM - MAIN BOARD POWER PART...
  • Page 22 All manuals and user guides at all-guides.com PCB LAYOUT - LCD BOARD (TOP VIEW) PCB LAYOUT - LCD BOARD (BOTTOM VIEW)
  • Page 23 All manuals and user guides at all-guides.com CIRCUIT DIAGRAM - LCD BOARD...
  • Page 24 All manuals and user guides at all-guides.com PCB LAYOUT - KEY BOARD (TOP VIEW) PCB LAYOUT - KEY BOARD (BOTTOM VIEW)
  • Page 25 All manuals and user guides at all-guides.com CIRCUIT DIAGRAM - KEY BOARD...
  • Page 26 All manuals and user guides at all-guides.com PCB LAYOUT - CD BOARD (TOP VIEW)
  • Page 27 All manuals and user guides at all-guides.com PCB LAYOUT - CD BOARD (BOTTOM VIEW)
  • Page 28 All manuals and user guides at all-guides.com CIRCUIT DIAGRAM - CD BOARD...
  • Page 29 All manuals and user guides at all-guides.com LAYOUT DIAGRAM - MCU BOARD (TOP VIEW) LAYOUT DIAGRAM - MCU BOARD (BOTTOM VIEW)
  • Page 30 All manuals and user guides at all-guides.com CIRCUIT DIAGRAM - MCU BOARD...
  • Page 31 All manuals and user guides at all-guides.com CIRCUIT DIAGRAM - MCU BOARD MEMORY PART...
  • Page 32 All manuals and user guides at all-guides.com MECHANICAL & ACCESSORIES PARTS LIST 996510003912 LENS CD DOOR 996510003766 ANT WIRE ASSEMBLY L2500MM 2P 996510003917 CD DOOR 996510001906 AUX STEREO CORD BLACK 996510003933 996510003928 CD DOOR CARRIER L FFC CABLE 150MM P1.0MM 10P 996510003931 996510003920 COVER POWER BUTTON...

  • Page 33: Main Board

    All manuals and user guides at all-guides.com ELECTRICAL PARTSLIST MCU BOARD IR BOARD IR501 994000005759 INFRARED RECEIVER IRM502H-S 996510003740 I.C. WM8725ED 14-PIN SOIC 996510003897 IC SST39VF800A-70-4C-EKE W/SW KEY BOARD 996510003733 I.C. UTCLD1117/A 1.8V SOT-223 IC HY57V641620ETP-7 64M SDRAM CN550 996510003885 USB SOCKET 996510003898 CN551...

  • Page 34: Revision List

    All manuals and user guides at all-guides.com 10-1 REVISION LIST 1.0 Manual 3141 785 31770 Initial Service Manual released. 1.1 Manual 3141 785 31771 In this version, the instruction of CD playability check is added and Electrical Partslist is updated 1.2 Manual 3141 785 31772 In this version, P9-2 Mechanical Partslist is updated.

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