Philips PET-7402-D Service Manual

DVD Portable Player PET7402D/05/12

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

3141 785 33431

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

Version 1.1

1.0 TECHNICAL SPECIFICATION

General

Current consumption

Playback time
Battery Capacity –
Lithium-ion 7.4V
Discharge cut-off
voltage(3.0 V for single cell)
Battery discharge cut-off
current
Battery Charge
voltage(1.2V for single cell)
Charging time NA

Headphone out (headphone output load 2x16 ohm)

Maximum output power:
Frequency response:
SNR (A-wght):
THD (0.2-20kHz):
Dynamic range 1kHz
Left-Right Channel
Separation:
Left-Right Channel

≥1100mAH
NA
NA
NA

>/=1.5mW (typical)
+/-3dB
>/=70dB

1.0%
>/=65dB
>/=55dB

</=2dB

Balance:

Supported disc type

Video
Playback
Formats:

Audio
Playback
Formats:

Playback disc type: CD、+/-R/RW,DVD,
Video Playback Format: DVD / VCD /MP3/

Audio Playback Format: CD/MP3, DVD
Disc Diameter 8cm / 12cm

DVD+/-R/RW
JPEG image/MPEG4

Divx5

Pixel specification

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

Factory Service Mode (FSM)

1.0 TECHNICAL SPECIFICATION

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 exixting region
Code.

3. Press (navigation up) or (navigation

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

Select “0” setting = Region Free (confidential)

Procedure for SW upgrade

1. Please burn the PHILIPS.BIN file into a empty
Disc.

2. Power on PET7402D with AC/DC adaptor.

3. Insert the upgrade disc and PLAY

4. The set will detect the upgraded SW.

5. Press “OK” to confirm and proceed.

6. The set will reset once finished upgrade.

Warning: Do not unplug the AC adaptor 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-MM-DD

1.0 TECHNICAL SPECIFICATION

Service Policy on PCBA of PET7402D

Type /05 /12
Main PCBA MLR MLR
TFT PCBA MLR MLR
BATTERY PCBA MLR MLR
KEY PCBA MLR MLR
CCFL KEY PCBA MLR MLR

MLR = module swap

2.0 SAFTETY INSTRUCTIONS

WARNING

GB

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.

F

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

D

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

NL

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.

I

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.

GB

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

NL

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

F

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.

D

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.

I

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

GB

Warning !

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

S

Varning !

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

Varoitus !

SF

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.

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

1M

Conductivemat

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

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.

3.0 INSTRUCTION FOR USE

4.0 MECHNICAL INSTRUCTIONS

B

PET7402D

1.Back View as Fig.1 4.0 Remove top cover as Fig.5
Remove screws to remove base

2.Open the DVD base as Fig.2

3.Remove DVD driver and every PCB board as Fig.3

5.0 Remove screws to remove TFT PC
KEY PCBA and CCFL PCBA board.

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

no

no

Replace DVD DriveCheck DVD Drive work?

Exchange AV cable

Check the Connection OK? Reinsertion

yes

Check speaker OK?

yes

Replace Main Board

no

no

Change the speaker