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Philips MCD139 Service Manual

Philips MCD139
57 pages
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MCD139/37/79/HTM139/55/78
MCD139B/37/12/05/58/79/55/98/MME239/37
©
Copyright 2008 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 0830 Service Audio Printed in The Netherlands Subject to modification
DVD Micro Theatre
Version 1.8
CLASS 1
LASER PRODUCT
© 3141 785 31118
TABLE OF CONTENTS
Page
Location of PC Boards & Versions Variation ........................1-2
3-1.......................................................................snoitac ificepS
Measurement Setup .............................................................1-4
Service Aids, Safety Instruction, etc .....................................1-5
Connections & Functional Overview.........................1-9 to 1-12
Troubleshooting ......................................................1-13 to 1-14
Repair Instructions...................................................................2
Disassembly Instructions & Service positions .........................3
Set Block Diagram ................................................................4-1
Set Wiring Diagram ..............................................................4-2
Key & VFD Board ....................................................................5
Main Board ..............................................................................6
7........................................................................draoBre ifilpmA
Power Board
............................................................................8
Tuner Board .............................................................................9
Mechanical Exploded View & Parts List ................................10
Revision List .......................................................................... 11
VIDEO CD
CD Playability Check ...................................................1-6 to 1-8

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Philips MCD139 Specifications

Sound IconSound
output power2x25W + 50W RMS / 1800W PMPO
sound enhancementDigital Sound Control 4 modes, Dynamic Bass Boost
sound systemDolby Digital
Loudspeakers IconLoudspeakers
main speaker3" woofer
subwoofer typePassive
Video Playback IconVideo Playback
playback mediaDVD+RW, DVD-Video, Picture CD, Video CD/SVCD
dvd region1
video enhancementProgressive Scan
Audio Playback IconAudio Playback
playback mediaWMA-CD, MP3-CD, CD, CD-R, CD-RW
loader typeTop
Tuner and Reception IconTuner and Reception
tuner bandsFM Stereo
station presets20
Connectivity IconConnectivity
video output - analogComponent Y Pb Pr (cinch), Composite CVBS (yellow cinch), S-Video (on Hosiden)
aux in1x(L/R)/ RCA
other connectionsDigital audio coaxial out, FM Antenna, Line out, DIN connection
Dimensions IconDimensions
set dimensions (W x H x D)218 x 221.5 x 90 mm
main speaker dimensions (W x H x D)125 x 250 x 232 mm
subwoofer dimensions (W x H x D)147 x 250 x 232 mm

Summary

Location of PCBS

Version Variations

Details the different PCB versions and their features across model numbers.

Specifications

Amplifier Section Specifications

Technical specifications for the amplifier output, frequency response, and sensitivity.

Speaker Specifications

Specifications for the speaker system, impedance, drivers, and dimensions.

Subwoofer Specifications

Specifications for the subwoofer, including impedance, driver size, and dimensions.

Tuner Section Specifications

Technical details for the tuner, including tuning range and signal-to-noise ratio.

DVD Section Specifications

Specifications for the DVD player, such as laser type, decoding, and video output.

Main Unit Specifications

Specifications for the main unit, including power supply, consumption, and dimensions.

Measurement Setup

Tuner FM Measurement Setup

Describes the setup for measuring FM tuner performance using specific equipment.

CD Measurement Setup

Details the measurement setup for CD playback, including test discs and equipment.

Recorder Measurement Setup

Describes the measurement setup for recorder performance, including test cassettes and equipment.

Service Aids

Service Tools

Lists specialized tools required for servicing the unit.

Compact Disc Test Discs

Lists specific CDs required for testing and diagnostics.

ESD Warning and Precautions

Safety warning regarding electrostatic discharge and handling ICs.

Lead-Free Soldering Information

Guidance on identifying and handling lead-free soldered components.

Service Instructions and Safety

General safety instructions and checks required after repair.

Instructions on CD Playability

CD Playability Troubleshooting Flowchart

Diagnostic flowchart for issues related to CD playback.

Standard CD Repair Procedure

Step-by-step guide for standard CD playability repairs.

CD Playability Checks and Procedures

Playability Check Procedure

How to check CD disc playability with specific test discs.

Liquid Lens Cleaning Method

Procedure for cleaning the CD player lens using special fluid.

Fast Lens Cleaning (Dry Brush)

Method for cleaning the CD lens using a dry brush.

Customer Information Addendum

Information to provide to customers after a checked unit is found fault-free.

CD Drive Performance Testing

Eye-Pattern Signal and Jitter Measurement

Measuring the eye-pattern signal for jitter on the CD drive.

Laser Current Measurement

Measuring laser current to diagnose CD drive issues.

CD Drive Offset Measurement

Measuring CD drive photodiode offsets for playability diagnosis.

System Connections

Speaker and Subwoofer Placement

Guidance on optimal placement of speakers and subwoofer for surround sound.

Speaker and Subwoofer Connections

How to connect speakers and subwoofer to the main unit.

TV Set Connections

Options for connecting the system to a TV for video and audio.

VCR or Satellite Box Connections

How to connect external audio/video sources like VCRs or set-top boxes.

FM Antenna Connection

Instructions for connecting the FM antenna for radio reception.

Power Cord Connection

Guidance on connecting the AC power cord safely.

Digital Audio Equipment Connection

How to connect digital audio devices using coaxial output.

Functional Overview

System Controls Overview

Identifies and describes the buttons and controls on the main unit.

Remote Control Functions

Explains the functions of each button on the remote control.

Troubleshooting Common Issues

No Power Troubleshooting

Steps to diagnose and fix issues related to the unit not powering on.

Picture Issues Troubleshooting

Solutions for no picture, distorted, or black/white video output.

Audio Issues Troubleshooting

Troubleshooting steps for audio issues, including lack of sound or distortion.

Disc Playback and System Response Issues

Resolving issues with disc playback, unresponsiveness, and feature access.

Radio Reception and Remote Control Issues

Solutions for poor radio reception and non-functional remote control.

Timer, Clock, and Sound Hum Issues

Troubleshooting for timer, clock settings, hum/buzz sounds, and bass response.

Progressive Scan Selection Issues

Troubleshooting steps for issues with selecting progressive scan video.

Repair Instructions

Main Unit Fault Diagnosis Chart

A flowchart for diagnosing faults within the main unit.

Disassembly Instructions

Main Board Dismantling

Step-by-step instructions for removing the main board.

Control Board Dismantling

Instructions for disassembling the control board.

Power & Amplifier Board Dismantling

Procedure for removing the power and amplifier board.

DVD Loader Dismantling

Steps to disassemble the DVD loader mechanism.

Service Positions

Service Position A Diagram

Illustration of the unit in service position A for access.

Service Position B Diagram

Illustration showing the unit in service position B for repair access.

Block Diagrams

DVD Main Board Block Diagram

Block diagram of the DVD main board components and connections.

Switched-Mode Power Board Block Diagram

Block diagram of the switched-mode power board.

Power Amplifier Board Block Diagram

Block diagram of the power amplifier board.

Wiring Diagram

DVD Pickup and Main Unit Wiring

Wiring diagram showing connections between DVD pickup and main boards.

Key & VFD Board

FTD Display Pin Assignment

Pin assignment details for the Front Display Unit (FTD).

Voltage Measurements

Voltage readings for ICs on the Key & VFD board for diagnostics.

Key & VFD Board Circuit Diagram

Schematic of the Key & VFD board showing component interconnections.

Key & VFD Board PCB Layout

Component placement diagrams for the top and bottom of the Key & VFD board.

Key & VFD Board Electrical Parts List

Comprehensive list of parts for the Key & VFD board.

Main Board

Main Board Circuit Diagrams

Schematic diagrams illustrating the Main Board's circuitry.

Main Board PCB Layouts

Component placement diagrams for the top and bottom views of the Main Board.

Model-Specific Main Board Diagrams

Circuit diagram and PCB layouts specific to certain model versions.

Main Board Electrical Parts List

List of all electrical components used on the Main Board.

Amplifier Board

Amplifier Board Voltage Measurements

Table of voltage readings for ICs on the Amplifier Board.

Amplifier Board Circuit Diagram

Schematic showing the Amplifier Board's electrical layout.

Amplifier Board PCB Layouts

Component placement diagrams for the top and bottom views of the Amplifier Board.

Amplifier Board Electrical Parts List

List of all electrical components for the Amplifier Board.

Power Board

Power Board Voltage Measurements

Table of voltage readings for ICs on the Power Board.

Power Board Circuit Diagram

Schematic diagram of the Power Board's circuitry.

Power Board PCB Layout

Component placement diagram for the Power Board.

Power Board Electrical Parts List

List of electrical components used on the Power Board.

Tuner Board

Tuner Adjustment Table

Table detailing adjustments for FM tuner alignment.

Tuner Board Circuit Diagram

Schematic diagram of the Tuner Board.

Tuner Board PCB Layouts

Component placement diagrams for the top and bottom views of the Tuner Board.

Tuner Board Electrical Parts List

List of electrical components for the Tuner Board.

Exploded Drawing - Main Unit

Exploded Drawing - Left Speaker Box

Mechanical & Accessories Parts List

Mechanical & Accessories Parts List (Main Unit)

List of mechanical and accessory parts for the main unit.

Electrical Parts - Left Speaker Box

List of electrical components for the left speaker box.

Electrical Parts - Miscellaneous

List of miscellaneous electrical parts and assemblies.

Revision List

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