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

Philips MCB275/05 Service Manual

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Micro System

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
Printed in The Netherlands Subject to modifi cation.
Page
LASER PRODUCT
MCB275
/05
CLASS 1
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 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 ECO Power Standby (LCD Display Off) ECO6 Tuner Board - Systems Non-Cenelec ECO6 Tuner Board - Systems Cenelec USB Direct...

  • Page 3: Specifications

    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 Clock accuracy...

  • Page 4: 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 5 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 Torx driver T10 extended ........4822 395 50423...

  • Page 6: Cd Playability Check

    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 ? clean the lens check playability Play a CD...
  • Page 7 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 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. Please find the exact resistor.
  • Page 9 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 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

    SERVICE TEST PROGRAM * Door switch is ignored → CD door can be opened. To enter Service Testprogram hold PLAY & Door Open/Close buttons depressed while plugging mainscord in. Display shows the MCU version V refers to Version "MCU-Vyy" yy refers to Software version number of the uProcessor (Main menu) (counting up from 01 to 99) DISPLAY...

  • Page 12: Set Block Diagram

    SET BLOCK DIAGRAM...

  • Page 13: Set Wiring Diagram

    SET WIRING DIAGRAM...
  • Page 14 PCB LAYOUT - MAIN BOARD (TOP VIEW)
  • Page 15 PCB LAYOUT - MAIN BOARD (BOTTOM VIEW)
  • Page 16 CIRCUIT DIAGRAM - MAIN BOARD AUDIO PART...
  • Page 17 CIRCUIT DIAGRAM - MAIN BOARD FM TUNER PART...
  • Page 18 CIRCUIT DIAGRAM - MAIN BOARD SUB MCU PART...
  • Page 19 CIRCUIT DIAGRAM - MAIN BOARD INTERFACE PART...
  • Page 20 CIRCUIT DIAGRAM - MAIN BOARD DAB PART...
  • Page 21 CIRCUIT DIAGRAM - MAIN BOARD POWER PART...
  • Page 22 PCB LAYOUT - LCD BOARD (TOP VIEW) PCB LAYOUT - LCD BOARD (BOTTOM VIEW)
  • Page 23 CIRCUIT DIAGRAM - LCD BOARD...
  • Page 24 PCB LAYOUT - KEY BOARD (TOP VIEW) PCB LAYOUT - KEY BOARD (BOTTOM VIEW)
  • Page 25 CIRCUIT DIAGRAM - KEY BOARD...
  • Page 26 PCB LAYOUT - CD BOARD (TOP VIEW)
  • Page 27 PCB LAYOUT - CD BOARD (BOTTOM VIEW)
  • Page 28 CIRCUIT DIAGRAM - CD BOARD...
  • Page 29 LAYOUT DIAGRAM - MCU BOARD (TOP VIEW) LAYOUT DIAGRAM - MCU BOARD (BOTTOM VIEW)
  • Page 30 CIRCUIT DIAGRAM - MCU BOARD...
  • Page 31 CIRCUIT DIAGRAM - MCU BOARD MEMORY PART...
  • Page 32 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 FFC CABLE 95MM P1.0MM 16P 996510003907 996510003932 VOLUME KNOB...

  • Page 33: Key Board

    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 996510003884 3.5MM EARPHONE AUX SOCKET 996510003739 I.C.

  • Page 34: Revision List

    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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