Philips mcd 755 service manual

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TABLE OF CONTENTS

Service Aids ................... -1 CPU Board
Info. about lead-free soldering 1 circuit diagram
Service Instruction ............. 1 layout diagram
CD Playability Check AMP Board
Disassembly digram. circuit diagram
layout diagram ..
Software version check and upgrading ......................................... 4»1
Block diagram ................................................................................ 5»1 Exploded view diagram ............................................................... 11-1
Wiring diagram ............................................................................. 6»1 Service partslist .................................................................. 12-1..12-2
Tuner Board Commercial partslist
circuit diagram.
layout diagram.
VFD Board
circuit diagram.
layout diagram.
CLASS 1
©Copyright 2007 Philips Consumer Electronics B.V. Eindhoven, The Netherlands LASER PRODUCT
All rights reserved. No parl of this publication may be reproduced, stored in a retrieval
system or transmitted, in any form or by any means, electronic, mechanical, photocopying,
or othenivise without the prior permission of Philips.
Published by LX 0737 Service Audio Subject to modification 3141 785 32120

Version 1.0

ii PHILIPS

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1-1

SERVICE AIDS

Service Tools: Compact Disc:

Universal Torx driver holder ................................. 4822 395 91019 SBC4ZG/426A Test disc 5 + 5A ........................... 4822 397 30096
TorX bit T10 150mm ........................................... 4822 395 50456 SBC442 Audio Burn-in test disc 1kHz ................. 4822 397 30155
Torx driver set T6-T20 ......................................... 4822 395 50145 SBC429 Audio Signals diSC ................................. 4822 397 30184
Torx driver T10 extended ..................................... 4822 395 50423 Dolby Pro-logic Test Disc .................................... 4822 395 10216

WARNING ESD

All ICs and many other semiconductors 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.

Salety regulations require that the set be restored to its original CLASS 1

condition and that arts which are identical with those 5 ecified,
reused p LASER PRODUCT

Satety components are marked by the symbol A.

INFORMATION ABOUT LEAD-FREE SOLDERING

Philips CE is producing lead-free sets from 1.1.2005 onwards.
IDENTIFICATION:

Regardless of special logo (not always indicated) one must treat all sets from 1 Jan 2005 onwards, according next rules:

0 On our website www.atvourservice.ce.Philips.com you find more information to:
as BGA-de-lsoldering (+ baking instructions)
* Heating-profiles of BGAs and other le used in Philips-sets
A: Lead free
You WlII find this and more technical information wtthin the "magazine", chapter "workshop news".

For additional questions please contact your local repair-helpdesk.

SERVICE INSTRUCTION

Safety regulations require that after a repair, the set must be returned in its original condition. Pay in particular attention to
the following points:

Route the wire trees correctly and fix them with the 1- UnPIUQ the AC Power cord and connect a Wire
mounted cable clamps. between the two pins of the AC Power plug.

Check the insulation of the AC Power lead for external 2- 35 the AC Power 5W'ICI 0 "5 "on" POSIIIOT (keep the
damage, AC Power cord unplugged!).

Check the strain relief at the AC Power cord for proper 3. Measure the resistance value between the pins of the
function. AC Power plug and the metal shielding of the tuner or
Check the electrical DC resistance between the AC Power the aerial connection 0 the set-The reading ShOUId be
Plug and the secondary side (only for sets which have a AC larger than 4-5 MOW" (F0? U-S- Ii ShOUld be between
Power isolated power supply): 4-2 Mohm and 12 Mohm).

4. Switch "off" the set, and remove the wire between the
two pins of the AC Power plug.

0 Check the cabinet for defects, to avoid touching of any
inner parts by the customer.