Philips MCM240 Service Manual

Philips MCM240 Service Manual

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Service
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Service Manual
©
Copyright 2005 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 SL 0529 Service Audio
Version 1.0

TABLE OF CONTENTS

Location of pc boards & Version variations ................ 1-2
Technical Specifications ............................................. 1-3
Measurement setup .................................................... 1-4
Lead-free Information & Service Instruction .............. 1-7
Preparations & Controls & Troubleshooting .. 1-8 to 1-10
Disassembly Instructions & Service positions .............. 2
Service Test Programs ............................................... 3-1
Set Block diagram ...................................................... 4-1
Set Wiring diagram ..................................................... 5-1
Power Board .................................................................. 6
Key Board ...................................................................... 7
Main Board .................................................................... 8
Set Mechanical Exploded view & parts list ................... 9
Printed in The Netherlands
Subject to modification
MCM240
/21/21M/22/25/37
Page
CLASS 1
LASER PRODUCT
GB
COMPACT
DIGITAL AUDIO
3141 785 30330

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Summary of Contents for Philips MCM240

  • Page 1: Table Of Contents

    LASER PRODUCT © Copyright 2005 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 LOCATION OF PRINTED CIRCUIT BOARDS HEADPHONE BOARD VOL BOARD ANTENNA BOARD VERSION VARIATIONS: Type /Versions: MC240 /21M Features & Board in used: Aux in / CDR in Line Out Video Out Surround Out Subwoofer Out Power Booster Out Digital Out Digital in Matrix Surround News...
  • Page 3: Specifications

    SPECIFICATIONS GENERAL: Mains voltage : 120/240V ± 15% Switchable for /21 Input sensitivity 120V ± 10% for /37 Aux in (at 1kHz) : 500mV at 600 Ω 230V ± 10% for /22/25 Output sensitivity : 15mW ± 2dB (Max. vol.) 240V ±...
  • 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

    SERVICE AIDS Service Tools: ESD Equipment: Universal Torx driver holder ........4822 395 91019 Anti-static table mat - large 1200x650x1.25mm ... 4822 466 10953 Torx bit T10 150mm ..........4822 395 50456 Anti-static table mat - small 600x650x1.25mm ..4822 466 10958 Torx driver set T6 - T20 .........
  • Page 6 WAARSCHUWING WARNING Alle IC’s en vele andere halfgeleiders zijn All ICs and many other semi-conductors are gevoelig voor electrostatische ontladingen susceptible to electrostatic discharges (ESD). (ESD). Careless handling during repair can reduce life Onzorgvuldig behandelen tijdens reparatie kan drastically. de levensduur drastisch doen verminderen. When repairing, make sure that you are Zorg ervoor dat u tijdens reparatie via een connected with the same potential as the mass...
  • Page 7 To avoid wear-out of tips switch off un-used equipment, or reduce heat. • Mix of lead-free solder alloy / parts with leaded solder alloy / parts is possible but PHILIPS recommends strongly to avoid mixed solder alloy types (leaded and lead-free).
  • Page 8 PREPARATIONS AND CONTROLS...
  • Page 9 PREPARATIONS AND CONTROLS...
  • Page 10 1-10 TROUBLESHOOTING...
  • Page 11 DISMANTLING INSTRUCTIONS DISMANTLING INSTRUCTIONS Dismantling of the Rear Portion Dismantling of the Front Boards and CD Door Repair Hints & Service Positions Note: The flex cables are very fragile, care should be taken 1) Remove 11 screws A and B as indicated to remove the not to damage them during repair.
  • Page 12: Service Test Programs

    VOL DN button depressed then STOP button depressed in standby mode Display shows the ROM version "VX--XX OTP MCM240 XX-XX-2005" V refers to Version X--XX refers to Software version number of the uProcessor eg. V1-7E XX-XX-200X refers to Date, eg. 25-5-2005...
  • Page 13: Set Block Diagram

    SET BLOCK DIAGRAM...
  • Page 14: Set Wiring Diagram

    SET WIRING DIAGRAM...
  • Page 15: Power Board

    Printed Circuit Board - Side A POWER BOARD The board is not intented to be repaired on component level. Circuit Diagram and Printed Circuit Board drawings are published for orientation only. Printed Circuit Board - Side A In case of defects please replace the entire board. The board can be ordered with codenumber "9940 000 02866"...
  • Page 16 CIRCUIT DIAGRAM...
  • Page 17: Key Board

    LAYOUT DIAGRAM - OPEN/CLOSE BOARD TOP SIDE KEY BOARD LAYOUT DIAGRAM - OPEN/CLOSE BOARD BOTTOM SIDE The board is not intented to be repaired on component level. Circuit Diagram and Printed Circuit Board drawings are published for orientation only. LAYOUT DIAGRAM - VOLUME BOARD In case of defects please replace the entire board.
  • Page 18 LAYOUT DIAGRAM - KEY BOARD TOP SIDE LAYOUT DIAGRAM - KEY BOARD BOTTOM SIDE...
  • Page 19 CIRCUIT DIAGRAM...
  • Page 20: Main Board

    BLOCK DIAGRAM - AM/FM IF + FM STEREO DETECTOR TA2099N MAIN BOARD TABLE OF CONTENTS BLOCK DIAGRAM - 2-CHANNEL AUDIO Internal IC Diagram ..........8-1 to 8-3 AMPLIFIER TFA9842J PIN CONFIGURATION - 2-CHANNEL AUDIO Main Board Layout Top View ........... 8-4 AMPLIFIER TFA9842J Main Board Layout Bottom View ........
  • Page 21 BLOCK DIAGRAM - CD Player Processor BLOCK DIAGRAM - SYSTEM ELECTRONIC VOLUME TC94A14FA TC9422N TEZI Clock generator SBAD 1-bit Servo control RFRP RFZI ZDET RFCT Digital equalizer Address automatic circuit adjustment circui t BUS0 Data CLV servo slicer 16 k BUS1 SLCO BUS2...
  • Page 22 BLOCK DIAGRAM - MICROCONTROLLER UNIT TMP87PP23F...
  • Page 23 LAYOUT DIAGRAM - MAIN BOARD TOP SIDE...
  • Page 24 LAYOUT DIAGRAM - MAIN BOARD BOTTOM SIDE...
  • Page 25 CIRCUIT DIAGRAM - MAIN BOARD MCU PART...
  • Page 26 CIRCUIT DIAGRAM - MAIN BOARD CD PART...
  • Page 27 CIRCUIT DIAGRAM - MAIN BOARD MP3 PART...
  • Page 28 CIRCUIT DIAGRAM - MAIN BOARD AMP PART...
  • Page 29 8-10 8-10 CIRCUIT DIAGRAM - MAIN BOARD TUNER PART...
  • Page 30 8-11 8-11 LAYOUT DIAGRAM - HEADPHONE BOARD LAYOUT DIAGRAM - HEADPHONE BOARD LAYOUT DIAGRAM - SPEAKER BOARD TOP SIDE BOTTOM SIDE TOP SIDE LAYOUT DIAGRAM - SPEAKER BOARD BOTTOM SIDE LAYOUT DIAGRAM - SWITCH BOARD LAYOUT DIAGRAM - MOTOR BOARD LAYOUT DIAGRAM - LED BOARD TOP SIDE LAYOUT DIAGRAM - ANTENNA BOARD...
  • Page 31 SET EXPLODED VIEW MCM240 SCREW LIST HARDEN SCREW BTTB 3x8mm AB SELF-TAPPING SCREW TA/WH 3x10mm(H D:10mm) MACHINE SCREW MS/KH 3x8mm HD 5mm NUT ID:3 OD:5.5 T:2.3mm SCREW TA/BWH 3x10mm (HD:12mm) SELF-TAPPING SCREW TA/WH 3x12mm HARDEN SCREW TT/PH 3x4 HARDEN SCREW BTTB 3x12 AB...
  • Page 32 MECHANICAL & ACCESSORIES PARTSLIST ELECTRICAL PARTSLIST 994000002809 CD DOOR LENS W/HOT FOIL 994000000275 RCA PIN JACK C317 994000002856 E.CAP 4700UF 16V +-20% Q208 994000002834 TRANSISTORS MMBT3904LT1 994000002805 CD DOOR COVER -LEFT 994000000317 AC CORD CUL 6FT /37 C319 994000001346 E.CAP 4700UF 25V +-20% Q209 994000002834 TRANSISTORS MMBT3904LT1...
  • Page 33 ELECTRICAL PARTSLIST T202 994000002859 I.F.T 7mm #7M4A1975R (ORANGE) T203 994000002861 I.F.T 7mm A049 (YELLOW) T302 994000000262 TRANSFORMER AC230V /22/25 VD201 994000002836 VARICAP DIODE 1SV-149 VD202 994000002836 VARICAP DIODE 1SV-149 994000002866 POWER BD ASS'Y /21/21M/37 994000002867 POWER BD ASS'Y /22/25 994000002868 KEY BD ASS'Y /21/21M/30/37 994000002869 KEY BD ASS'Y /22/25...

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