Philips MC230 Service Manual
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Micro System
Service
Service
Service
Service
Service
Service Manual
©
Copyright 2003 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 0427 Service Audio
Version 1.0
TABLE OF CONTENTS
Location of pc boards & Version variations ................ 1-2
Technical Specifications ............................................. 1-3
Measurement setup .................................................... 1-4
Service Aids, Safety Instruction, etc. .......................... 1-5
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
Display Board ................................................................ 9
Set Mechanical Exploded view & parts list ................. 10
Printed in The Netherlands
Subject to modification
MC230/
Page
CLASS 1
LASER PRODUCT
GB
21M/22/25/30
MC235
/37
COMPACT
DIGITAL AUDIO
3141 785 30020

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Summary of Contents for Philips MC230

  • Page 1 LASER PRODUCT © Copyright 2003 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

    LOCATION OF PRINTED CIRCUIT BOARDS HEADPHONE BOARD KEY_C BOARD FM/AM BOARD VERSION VARIATIONS: Type /Versions: MC230 MC235 Features & Board in used: Aux in / CDR in Line Out Video Out Surround Out Subwoofer Out Power Booster Out Digital Out...
  • 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 240V ± 10% for /30 Headphone output at 32 ohm : 15mW ± 2dB (Max. vol.) Mains frequency : 50/60Hz 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

    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: Class 1 Laser Product

    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: Preparations And Controls

    PREPARATIONS AND CONTROLS...
  • Page 8 PREPARATIONS AND CONTROLS...
  • Page 9 PREPARATIONS AND CONTROLS...
  • Page 10 1-10 PREPARATIONS AND CONTROLS...
  • Page 11: Dismantling Instructions

    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 Program

    SERVICE TEST PROGRAM To start service test program PLAY & SOURCE depressed while plugging in the mains cord Display shows the VER refers to Version ROM version "VER XXX" XXX refers to Software version number of the uProcessor (Main menu) (counting up from 010 to 999) DISPLAY COMPACT DISC...
  • Page 13: Set Block Diagram

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

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

    POWER BOARD TABLE OF CONTENTS Circuit Diagram ..............6-2 PCB Layout ..............6-3...
  • Page 16: Circuit Diagram

    CIRCUIT DIAGRAM...
  • Page 17 LAYOUT DIAGRAM - POWER BOARD LAYOUT DIAGRAM - POWER BOARD SMD SIDE COMPONENT SIDE...
  • Page 18 KEY BOARD TABLE OF CONTENTS Circuit Diagram ................8-2 Layout Diagram-Component ............8-3 Layout Diagram-SMD ..............8-3 Layout Diagram-Component ............8-4 Layout Diagram-SMD ..............8-4...
  • Page 19: Circuit Diagram - Front Board

    CIRCUIT DIAGRAM - FRONT BOARD...
  • Page 20: Component Side

    LAYOUT DIAGRAM - KEY_A BOARD LAYOUT DIAGRAM - KEY_B BOARD COMPONENT SIDE COMPONENT SIDE LAYOUT DIAGRAM - KEY_B BOARD LAYOUT DIAGRAM - KEY_A BOARD SMD SIDE SMD SIDE...
  • Page 21 LAYOUT DIAGRAM - KEY_C BOARD COMPONENT SIDE LAYOUT DIAGRAM - KEY_C BOARD SMD SIDE...
  • Page 22: Main Board

    SOUND FADER CONTROL CIRCUIT TEA6321 MAIN BOARD TABLE OF CONTENTS IC Block Diagram...............8-1 Circuit Diagram-Main Part ............8-2 Component Layout - Main PCB ..........8-3 SMD Layout - Main PCB ............... 8-4 Layout - Headphone PCB ............8-5 IC Block Diagram ..
  • Page 23: Main Board - Circuit Diagram

    MAIN BOARD - CIRCUIT DIAGRAM...
  • Page 24 MAIN PCB - COMPONENT LAYOUT...
  • Page 25 MAIN PCB - COMPONENT LAYOUT...
  • Page 26 FLASH MICROCONTROLLER HEADPHONE PCB - TOP LAYOUT P89C60X2/P89C61X2--BLOCK DIAGRAM HEADPHONE PCB - BOTTOM LAYOUT...
  • Page 27: Display Board

    DISPLAY BOARD TABLE OF CONTENTS Circuit Diagram ................9-2 Layout Diagram-Component ............9-3 Layout Diagram-SMD ..............9-3...
  • Page 28 CIRCUIT DIAGRAM - DISPLAY BOARD...
  • Page 29 LAYOUT DIAGRAM - DISPLAY BOARD LAYOUT DIAGRAM - DISPLAY BOARD COMPONENT SIDE SMD SIDE...
  • Page 30: Exploded Drawing

    10-1 10-1 EXPLODED DRAWING MC230 SCREW LIST SELF-TAPPING SCREW TB/KH 3x8 HD 5mm HARDEN SCREW BTTB 3x8mm AB HARDEN SCREW TT/PH 3x4 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)
  • Page 31 U102 9940 000 00368 IC P87C58X2BBD /21/30/37 U103 9940 000 00251 IC (ROHM) BR24L04 U201 9940 000 00365 IC (PHILIPS) SAA7379HL CD-18 U202 9940 000 00252 IC MOTOR DRIVER D9259 U301 9940 000 00261 IC (LIBERAL) LM78L05 U401 9351 772 20557...

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Mc235

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