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Philips MCM148 Service Manual

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Micro System
©
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 SL 0731 Service Audio
Version 1.0
TABLE OF CONTENTS
Location of PCBs .................................................................. 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
Software Version Checking ..................................................... 2
Set Block Diagram ................................................................... 3
Set Wiring Diagram ................................................................. 4
Main Board .............................................................................. 5
Front/MCU Board .................................................................... 6
Set Mechanical Exploded View & Parts List ............................ 7
Electrical Parts List .................................................................. 8
Revision List ............................................................................ 9
Printed in The Netherlands
Subject to modification
MCM148
Page
CLASS 1
LASER PRODUCT
© 3141 785 32030
/55

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  Summary of Contents for Philips MCM148

  • Page 1 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 PCBS LOCATION FRONT BOARD MAIN BOARD...
  • Page 3: Specifications

    SPECIFICATIONS AMPLIFIER SPEAKERS Output power ........... 2 x 2W RMS Bass reflex system Signal-to-noise ratio ......60 dBA (IEC) Dimensions (w x h x d) . 134 x 230 x 152 (mm) Frequency response ....... 125 – 16000 Hz GENERAL INFORMATION Impedance loudspeakers ...........
  • Page 4 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 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 Standard repair procedure playability ok ? clean the lens check playability Play a CD...
  • Page 7 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 8 INSTRUCTIONS ON CD PLAYABILITY 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 SOFTWARE VERSION CHECKING To hold DBB & SKIP NEXT depressed while plugging in mains cord. Display shows the ROM version VER refers to Version "VER y.yy MTP xx-xx-2007" y.yy refers to Software version number of the uProcessor (counting up from 01 to 99) xx refers to date number of the production.
  • Page 10 SET BLOCK DIAGRAM...
  • Page 11 SET WIRING DIAGRAM FRONT/MCU...
  • Page 12 MAIN BOARD TABLE OF CONTENTS Layout Top View .............. 5-2 Layout Bottom View ............5-3 Circuit Diagram (AF&Amp Part) ........5-4 Circuit Diagram (CD&MP3 Part) ........5-5 Circuit Diagram (Tuner Part) ..........5-6...
  • Page 13 PCB LAYOUT - MAIN BOARD (TOP VIEW)
  • Page 14 PCB LAYOUT - MAIN BOARD (BOTTOM VIEW)
  • Page 15 CIRCUIT DIAGRAM - MAIN & POWER BOARD AF & AMP PART...
  • Page 16 CIRCUIT DIAGRAM - MAIN BOARD CD & MP3 PART...
  • Page 17 CIRCUIT DIAGRAM - MAIN BOARD TUNER PART...
  • Page 18 FRONT/MCU BOARD TABLE OF CONTENTS Layout Top View ............... 6-2 Layout Bottom View ............6-3 Circuit Diagram ..............6-4...
  • Page 19 PCB LAYOUT - FRONT/MCU BOARD (TOP VIEW)
  • Page 20 PCB LAYOUT - FRONT/MCU BOARD (BOTTOM VIEW)
  • Page 21 CIRCUIT DIAGRAM - FRONT/MCU BOARD...
  • Page 22 7 - 1 7 - 1 SET MECHANICAL EXPLODED VIEW T101...
  • Page 23 MECHANICAL & ACCESSORIES PARTS LIST 996510006666 SPK BOX PART MCM148/55 996510006668 REMOTE CONTROL 994000005398 CD MECHANISM DA11B3VF 996510006654 FRONT CABINET(ABS) 996510006655 REAR CABINET-343g 996510006656 CD TRAY 996510006659 VOL COSMETIC COVER 996510006667 SPK GRILL 996510006657 CD DOOR 994000004392 LASER COVER (FOR SANYO CD)
  • Page 24 ELECTRICAL PARTS LIST - MAIN BOARD C220 994000004351 TRIMMER 20PF 6MM (RED) 996510000881 IC TB2132FNG C225 994000004351 TRIMMER 20PF 6MM (RED) 994000004532 IC KA7808E C236 994000000254 TRIMMER 10PF 6MM (WH) 996510000880 IC LM78L08 994000003642 CER. FILTER LT10.7MA5-A RED U801 996510006679 IC (SANYO) LC786921W-UPHI-E 996510006680 CER.
  • Page 25 ELECTRICAL PARTS LIST - FRONT/MCU BOARD D001 996510006683 LCD DISPLAY 996500042437 CH-DIODE SS14 SMA/DO-214AC 996500042438 LED LAMP 2x5x7mm (WHITE) 994000003937 SMD TRANSISTORS PMBT3906 994000004338 SMD TRANSISTORS PMBT3904 994000004338 SMD TRANSISTORS PMBT3904 REM2 994000004367 OPTIC SENSER FM-6038TM2-5AN 996500042444 TACT SWITCH 6x6mm 4.3mm SW10 996500042444 TACT SWITCH 6x6mm 4.3mm...

This manual is also suitable for:

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