Philips PET-741 Service manual

DVD Portable Player PET741/37

Service Manual

©Copyright 2005 Philips Consumer Electronics B.V. Eindhoven, The Netherlands All rights reserved. No part of this publication may by reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronics, mechanical, photocopying, or otherwise without the prior permission of Philips

TABLE OF CONTENTS

Chapter

Technical Specification & Service Tips…………..……….. 1 Safety Instructions…………………………………………….. 2 Instruction for Use……………………………………………… 3 Mechanical Instructions………………………………………. 4 Troubleshooting …………………………………………………5 Overall Block Diagram…………………………………………. 6 Electrical Diagram……………………………………………… 7 Service Part List………………………………...………………. 8 Revision List……………………………………………………. 9

Published by BU AVM – FK Printed in the Netherlands Subject to modification 3141 785 33900

Version 1.0

1.0 TECHNICAL SPECIFICATION

General

Dimensions (W x H x D): 195 x 154 x 38 mm Bear Unit Weight: 680g Power supply: Supply voltage AC 100~240V (adapter)

Supply Power consumption Operating Temp & RH 0~ 45degC / 30-90% RH

Audio System Output voltage 1kHz: 2V +/-0.2V THD 20-20kHz (%):

Dynamic range 1kHz >/=80dB Signal/Noise ratio: >/=80dB Frequency response (2020kHz): Channel Separation 1kHz >=85dB Channel Balance 1kHz 1dB

Current consumption

DC Supply Standby Power off Battery Voltage Capacity Battery playtime Charging time Standby Power off

Headphone out (headphone output load 2x16 ohm)

Maximum output power: Frequency response: SNR (A-wght): THD (w/16 ohm loading): Left-Right Channel Separation: Left-Right Channel Balance: ≤2.5dB

Supported disc type

Video Playback Formats:

Audio Playback Formats:

≥45dB

DC 12V (battery) 9W

≤1%

+/-1dB

DC9V-15.0V <0.45W

7.4V 1500mAH

≥1.5mW +/-1dB

≥70dB 1%

Playback disc type: CD,+/- R/RW,DVD,DVD +/-R/RW Video Playback Format: DVD / VCD /MP3,JPEG Image,Divx,AVI

Audio Playback Format: CD/MP3, DVD, Disc Diameter 12cm

Pixel specification

Max. 0 bright-dot & max. 3 dark-dots

1.0 TECHNICAL SPECIFICATION

Factory Service Mode (FSM)

Procedure to change region code of your DVD Portable

1. Power ON the DVD player and do not insert DISC inside player

2. SetupPrefer Press the key in the sequence as

|  |  |  |  |  |  |

The LCD display showed the existing region Code.

3. Press down) repeatedly to select the number from 0 to 6.

4. Then press OK to confirm your region code.

5. Refer below table for your region code setting

(navigation up) or (navigation

Select “0” setting = Region Free (confidential)

Procedure for SW upgrade

1. Please burn the "PHILIPS.BIN" file into a empty disc.

2. Power on PET741 with AC/DC adapter

3. The set will detect the upgraded SW

4. Press “OK” to confirm and proceed

5. The set will reset once finished upgrade

Warning: Do not unplug the AC adapter during firmware upgrade to prevent flash corrupt of the set!!

Procedure to check SW version of your DVD Portable

1. SetupGeneral

Press the key in the sequence as              Then a menu will be show XX-YYYY-MMDDD

2.0 SAFTETY INSTRUCTIONS

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.

ATTENTION

Tous les IC et beaucoup d’autres semi-conducteurs sont sensibles aux décharges statiques (ESD). Leur longévité pourrait être considérablement écourtée par le fait qu’aucune précaution n’est prise à leur manipulation. Lors de réparations, s’assurer de bien être relié au même potentiel que la masse de l’appareil et enfiler le bracelet serti d’une résistance de sécurité. Veiller à ce que les composants ainsi que les outils que l’on utilise soient également à ce potentiel.

ESD

WARNUNG

Alle ICs und viele andere Halbleiter sind empfindlich gegenüber elektrostatischen Entladungen (ESD). Unsorgfältige Behandlung im Reparaturfall kan die Lebensdauer drastisch reduzieren. Veranlassen Sie, dass Sie im Reparaturfall über ein Pulsarmband mit Widerstand verbunden sind mit dem gleichen Potential wie die Masse des Gerätes. Bauteile und Hilfsmittel auch auf dieses gleiche Potential halten.

WAARSCHUWING

Alle IC’s en vele andere halfgeleiders zijn gevoelig voor electrostatische ontladingen (ESD). Onzorgvuldig behandelen tijdens reparatie kan de levensduur drastisch doen verminderen. Zorg ervoor dat u tijdens reparatie via een polsband met weerstand verbonden bent met hetzelfde potentiaal als de massa van het apparaat. Houd componenten en hulpmiddelen ook op ditzelfde potentiaal.

AVVERTIMENTO

Tutti IC e parecchi semi-conduttori sono sensibili alle scariche statiche (ESD). La loro longevità potrebbe essere fortemente ridatta in caso di non osservazione della più grande cauzione alla loro manipolazione. Durante le riparazioni occorre quindi essere collegato allo stesso potenziale che quello della massa dell’apparecchio tramite un braccialetto a resistenza. Assicurarsi che i componenti e anche gli utensili con quali si lavora siano anche a questo potenziale.

Safety regulations require that the set be restored to its original condition and that parts which are identical with those specified, be used.

Veiligheidsbepalingen vereisen, dat het apparaat bij reparatie in zijn oorspronkelijke toestand wordt teruggebracht en dat onderdelen, identiek aan de gespecificeerde, worden toegepast.

Les normes de sécurité exigent que l’appareil soit remis à l’état d’origine et que soient utiliséés les piéces de rechange identiques à celles spécifiées.

Bei jeder Reparatur sind die geltenden Sicherheitsvorschriften zu beachten. Der Original zustand des Geräts darf nicht verändert werden; für Reparaturen sind Original-Ersatzteile zu verwenden.

Le norme di sicurezza esigono che l’apparecchio venga rimesso nelle condizioni originali e che siano utilizzati i pezzi di ricambio identici a quelli specificati.

“Pour votre sécurité, ces documents doivent être utilisés par des spécialistes agréés, seuls habilités à réparer votre appareil en panne”.

CLASS 1

LASER PRODUCT

Warning !

Invisible laser radiation when open. Avoid direct exposure to beam.

Varning !

Osynlig laserstrålning när apparaten är öppnad och spärren är urkopplad. Betrakta ej strålen.

Varoitus !

Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina näkymättömälle laserisäteilylle. Älä katso säteeseen!

3122 110 03420

"After servicing and before returning set to customer perform a leakage current measurement test from all exposed metal parts to earth ground to assure no shock hazard exist. The leakage current must not exceed 0.5mA."

DK Advarse !

Usynlig laserstråling ved åbning når sikkerhedsafbrydere er ude af funktion. Undgå udsaettelse for stråling.

SAFTY NOTICE

LEAKAGE CURRENT CHECK

SAFTY PRECAUTIONS

Plug the AC line cord directly into a 120V AC outlet (do

not use an isolation transformer for this check). Use an

AC voltmeter, having 5000 per volt or more sensitivity.

Connect a 1500 10W resistor,paralleled by a 0.15uF

150V AC capacitor between a knomn good earth ground

(water pipe, conduit, etc.) and all exposed metal parts of

cabinet (antennas, handle bracket, metal cabinet

screwheads, metal overlays, control shafts, etc.).

READING SHOULD NOT EXCEED 0.3V

DVD VIDEO PLAYER

Measure the AC voltage across the 1500 resistor.

The test must be conducted with the AC switch on and

then repeated with the AC switch off. The AC voltage

indicated by the meter may not exceed 0.3V.A reading

exceeding 0.3V indicates that a dangerous potential

exists, the fault must be located and corrected.

Repeat the above test with the DVD VIDEO PLAYER

power plug reversed.

NEVER RETURN A DVD VIDEO PLAYER TO THE

CUSTOMER WITHOUT TAKING NECESSARY

CORRECTIVE ACTION.

AC VOLTMETER

(5000 per volt or more sensitivity)

Good earth ground

1500 10W

such as a water pipe, conduit, etc.

AC OUTLET

0.15uF 150V AC

Test all exposed metal. Voltmeter Hook-up for Leakage Current Check

The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

2.1 ESD PROTECTION

Whenthepowersupplyisbeingturnedon,youmaynotremovethislasercautionslabel.Ifitremoves,radiationoflaser

maybereceived.

PREPARATIONOFSERVICING

PickupHeadconsistsofalaserdiodethatisverysusceptibletoexternalstaticelectrocity.

Althoughitoperatesproperlyafterreplacement,ifitwassubjecttoelectrostaticdischargeduringreplacement,

itslifemightbeshortened.Whenreplacing,useaconductivemat,solderingironwithgroundwire,etc.to

protectthelaserdiodeformdamagebystaticelectricity.

Andalso,theLSIandICaresameasabove.

Groundconductive wriststrapforbody.

Solderingiron withgroundwire orceramictype

Conductivemat

Thegroundresistance betweenthegroundline andthegroundislessthan10

3.0 INSTRUCTION FOR USE

4.0 MECHANICAL INSTRUCTION

Disassembly Procedure on PET741D

Remove eight screws on back cabinet to separate top cabinet and back cabinet.

Generally open the front cabinet.

screws 8pcs

Disassemble hous and connecter. 7P housin.

5P housin,basipetal yellow orange red white black. 14P

Disassemble hous and connecter.

housin,basipetal black" red black white black green black white black red black green white red.

Disassemble hous and connecter,and take out the DVD LOADER.

Remove four screws on main board. screws 4pcs

Remove ten screws on KEY board. screws 10pcs

Remove two screws on TFT board. screws 2pcs

5.0 TROUBLESHOOTING

SYMPTOM: NO IMAGE / NO SOUND

SYMPTOM: NO IMAGE OUTPUT ( THE PANEL SHOW BLUE PICTURE)

Start

NOTE: AV Cable TYPE from outside to

Inside L-Audio, R-Audio, Video, Ground

SYMPTOM: NO SOUND COMES FROM SPEAKER

yes

Check the external AV

Cable TYPE

connection is OK?

Replace Main Board

yes

note

and

Start

Replace DVD DriveCheck DVD Drive work?

Exchange AV cable

Check the Connection OK? Reinsertion

yes

Check speaker OK?

yes

Replace Main Board

Change the speaker

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