Philips MCD120 Service Manual
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DVD Micro System
CONTENTS
Technical specification ..................................................................1-2
Version variation............................................................................1-2
Service measurement setup..........................................................1-3
Service aids .................................................................................1-4
Instructions on CD playability ...............................................2-1.. 2-2
Block diagram ................................................................................3-1
Wiring diagram ..............................................................................4-1
Display&Key board
Circuit diagram .........................................................................5-1
Layout diagram .........................................................................5-2
Rectifier board
Circuit diagram .........................................................................6-1
Layout diagram .........................................................................6-2
DVD board
Circuit diagram ..................................................................7-1..7-5
Layout diagram .........................................................................7-6
AMP board
Circuit diagram .........................................................................8-1
Layout diagram .........................................................................8-2
Exploded view diagram .................................................................9-1
Mechanical parts list ......................................................................9-2
Electrical parts list........................................................................10-1
©
Copyright 2009 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 LX 0936 Service Audio
Version 1.1
Subject to modification
MCD120
-/96/98//93
Recordable
ReWritable
3141 785 34411

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Summary of Contents for Philips MCD120

  • Page 1: Table Of Contents

    Electrical parts list................10-1 © Copyright 2009 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: Technical Specification

    1 - 2 TECHNICAL SPECIFICATION SYSTEM REMOTE Power supply 220-240V / 50Hz Distance Power consumption Active: <15 W Angle ± 30º (1/8 rated output Standby: <2.5 W power) Power output 2 x 10W USB Direct Version 2.0 Frequency response 100Hz-16kHz (±3dB) Video output 1 VP-P Horizontal definition...
  • Page 3 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 4: Service Aids

    SERVICE AIDS WARNING All ICs and many other semi-conductors are susceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connected with the same potential as the mass of the set via a wrist wrap with resistance. Keep components and tools also at this potential.
  • Page 5: Instructions On Cd Playability

    2 - 1 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 playability ok ? Play a CD for at least 10 minutes check playability...
  • Page 6 2 - 2 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 7: Block Diagram

    4 - 1 4 - 1 SET BLOCK DIAGRAM...
  • Page 8: Wiring Diagram

    4 - 2 4- 2 SET WIRING DIAGRAM...
  • Page 9: Circuit Diagram

    5 - 1 5 - 1 CIRCUIT DIAGRAM - DISPLAY & KEY BOARD...
  • Page 10 5 - 2 5 - 2 LAYOUT DIAGARM - DISPLAY & Key BOARD...
  • Page 11 6 - 1 6 - 1 CIRCUIT DIAGRAM - RECTIFIER BOARD...
  • Page 12 6 - 2 6 - 2 LAYOUT DIAGARM - RECTIFIER BOARD...
  • Page 13 7 - 1 7 - 1 CIRCUIT DIAGRAM - DVD BOARD PART 1 AVCC12 P+12V P+5V R126 R126 2.2K 2.2K R123 R123 R125 R125 7.5K 7.5K VREF3 Power On Mute 2N3906 2N3906 DA_L BC50 BC50 DA_L Zener/5V1 Zener/5V1 EC26 EC26 R124 R124 DA_R...
  • Page 14 7 - 2 7 - 2 CIRCUIT DIAGRAM - DVD BOARD PART 2 DVCC LED3751G LED3751G 100UF16V 100UF16V STANDBY STBLED 2N3906 2N3906 EC34 EC34 10uF/16V 10uF/16V F_CLK F_DAT F_STB DI/O GND DVCC F_CLK F_STB F_DAT F_IR DVCC DVCC DVCC STBLED SG1/KS1 SG2/KS2 SG14/GR5...
  • Page 15 7 - 3 7 - 3 CIRCUIT DIAGRAM - DVD BOARD PART 3 Option SPI_CE SPI_VCC3 CE_B ROM_VCC3 SPI_VCC3 SPI_CLK SPI FLASH-SOP8 SPI FLASH-SOP8 0.1uF 0.1uF SPI_CE SPI_VCC3 CE_B SPI_CLK SPI FLASH-SOP8 SPI FLASH-SOP8 MA10 MD10 DQ10 M_BA0 MD11 BA/A11 DQ11 MD12 MA10...
  • Page 16 7 - 4 7 - 4 CIRCUIT DIAGRAM - DVD BOARD PART 4 A+5V FOC- SPI_D[0..3] A+5V PUHRF SPI_CE FOC+ SPI_CE SPI_CLK RAD+ SPI_CLK RAD- TV_DAC3 TV_DAC3 TV_DAC2 TV_DAC2 PUHRF TV_DAC1 RFGND TV_DAC1 TV_DAC0 3(C) 1(E) TV_DAC0 100K 100K RFGND 2SK3018 2SK3018 2(B)
  • Page 17 7 - 5 7 - 5 CIRCUIT DIAGRAM - DVD BOARD PART 5 P+5V System +5V P+5V DVCC P+5V R120 R120 4.7K 4.7K EC16 EC16 BC34 BC34 EC18 EC18 BC39 BC39 1N4007 1N4007 STB_LED P+5V VCC5 POWER CON 220uF/16V 220uF/16V 0.1uF 0.1uF 100uF/16V...
  • Page 18: Layout Diagram

    7 - 6 7 - 6 LAYOUT DIAGRAM - DVD BOARD...
  • Page 19 8 - 1 8 - 1 CIRCUIT DIAGRAM - AMP BOARD...
  • Page 20 8 - 2 8 - 2 LAYOUT DIAGRAM - AMP BOARD...
  • Page 21: Exploded View Diagram

    9 - 1 9 - 1 EXPLODED VIEW DIAGRAM DVDD PCB3...
  • Page 22: Mechanical Partslist

    Power Cord set (Black)(only for-/93) 996510030604 Power Cord set (Black)(only for-/96) 996510029456 PLAY KNOB DVDD 996510018098 DVD Deck PCB4 996510029457 P.C.B. MCD120 CD BD. PCB1 996510029459 P.C.B. MCD120 DISPLAY BD. PCB2 996510029436 P.C.B. MCD120 KEY BD. PCB3 996510029433 P.C.B. MCD120 AMP BD.
  • Page 23: Electrical Partslist

    10 - 1 ELECTRICAL PARTSLIST AMP BOARD ASSEMBLY Q301 996510008797 SMT TRANSISTOR 9014C Q302 996510018096 SMT TRANSISTOR 8550B/C(SOT23) Q303 996510008797 SMT TRANSISTOR 9014C Q305 996510018096 SMT TRANSISTOR 8550B/C(SOT23) DISPLAY BOARD ASSEMBLY IC701 996510029462 SMT IC.ET6202 28P JK701 996510029442 USB CONNECTOR USB-A-02 LED702 996510029452 LED DISPLAY LED375G-A1 5 DIGIT...

This manual is also suitable for:

Mcd120/96Mcd120/98Mcd120/93

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