PET-721
DVD Portable Player PET721C/D/S
All version
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
Published by BU AVM – FK Printed in the Netherlands Subject to modification 3141 785 33742
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 1.2 (wk934)
1.0 TECHNICAL SPECIFICATION
General
Dimensions (W x H x D): 195 x 154x 38.2 mm
Bear Unit Weight: 675g
Power supply:
Supply voltage AC 100~240V (adapter)
Supply Power
consumption
Operating Temp & RH 0~ 50degC / 40-90% 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 >=80dB
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:
Supported disc type
Video
Playback
Formats:
Audio
Playback
Formats:
≤2.0dB
≥55dB
DC 9V/1A
7W
≤1%
+/-1dB
DC6.3V-15.5V
<0.45W
≤6.3V
1000mAH
5.5h
≥1.5mW
+/-1dB
≥70dB
1.0%
Playback disc type: CD,+/- R/RW,DVD,DVD
+/-R/RW
Video Playback Format: DVD / VCD /MP3,JPEG
Image,
Audio Playback Format: CD/MP3, DVD,Divx5
Disc Diameter 8cm/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 D VD player and do not insert
DISC inside player
2. SetupPrefer
Press
(previous) -> (next) -> (next) ->
(previous)
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
(next) -> (previous) -> (next) ->
(navigation up) or (navigation
Procedure for SW upgrade
1. Download the “PHILIPS.BIN” file from the
Philips support site
2. Power on PET721C 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. SetupGeneral
Press IR in the sequence as
3308
Then a menu will be show XX-YY-MM-DD
Select “0” setting = Region Free (confidential)
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
Whenthepowersupplyisbeingturnedon,youmaynotremovethislasercautionslabel.Ifitremoves,radiationoflaser
maybereceived.
PREPARATIONOFSERVICING
PickupHeadconsistsofalaserdiodethatisverysusceptibletoexternalstaticelectrocity.
Althoughitoperatesproperlyafterreplacement,ifitwassubjecttoelectrostaticdischargeduringreplacement,
itslifemightbeshortened.Whenreplacing,useaconductivemat,solderingironwithgroundwire,etc.to
protectthelaserdiodeformdamagebystaticelectricity.
Andalso,theLSIandICaresameasabove.
Groundconductive
wriststrapforbody.
Solderingiron
withgroundwire
orceramictype
1M
Conductivemat
Thegroundresistance
betweenthegroundline
andthegroundislessthan10
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 MECHANICAL INSTRUCTION
Disassembly Procedure on PET721D
Remove eight screws on back cabinet
to separate top cabinet and back
cabinet.
Generally open the front cabinet.
screws 8pcs
Disassemble the connecter on DVD
top cabinet.
Remove two screws on the battery and
battery board.
Remove three screws on the Main
board.
screws 2pcs
screws 3pcs
Disassemble the black cloth on the
DVD LOADER.
Disassemble the connecter and black
cloth on the TFT 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
Loading...