Philips-PET-702-Service-Manual电路原理图.pdf

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1、DVD Portable Player PET702 All version 3141 785 32054 Version 1.4 TABLE OF CONTENTS Chapter Technical Specification fr Reparaturen sind Original-Ersatzteile zu verwenden.ILe norme di sicurezza esigono che lapparecchio venga rimessonelle condizioni originali e che siano utilizzati i pezzi di ricambio

2、identici a quelli specificati.“After servicing and before returning set to customer perform aleakage current measurement test from all exposed metal parts toearth ground to assure no shock hazard exist. The leakage currentmust not exceed 0.5mA.“CLASS 1LASER PRODUCT3122 110 03420GB Warning !Invisible

3、 laser radiation when open.Avoid direct exposure to beam.S Varning !Osynlig laserstrlning nr apparaten r ppnad och sprrenr urkopplad. Betrakta ej strlen.SF Varoitus !Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiinankymttmlle laseristeilylle. l katso steeseen!DK Advarse !Usynlig lase

4、rstrling ved bning nr sikkerhedsafbrydere erude af funktion. Undg udsaettelse for strling.Whenthepowersupplyisbeingturnedon,youmaynotremovethislasercautionslabel.Ifitremoves,radiationoflasermaybereceived.2.1 ESD PROTECTIONPREPARATIONOFSERVICINGPickupHeadconsistsofalaserdiodethatisverysusceptibletoex

5、ternalstaticelectrocity.Althoughitoperatesproperlyafterreplacement,ifitwassubjecttoelectrostaticdischargeduringreplacement,itslifemightbeshortened.Whenreplacing,useaconductivemat,solderingironwithgroundwire,etc.toprotectthelaserdiodeformdamagebystaticelectricity.Andalso,theLSIandICaresameasabove.Sol

6、deringironwithgroundwireorceramictypeGroundconductivewriststrapforbody.ConductivematThegroundresistancebetweenthegroundlineandthegroundislessthan101MSAFTY NOTICEPlug the AC line cord directly into a 120V AC outlet (donot use an isolation transformer for this check). Use anAC voltmeter, having 5000 p

7、er volt or more sensitivity.Connect a 1500 10W resistor,paralleled by a 0.15uF150V AC capacitor between a knomn good earth ground(water pipe, conduit, etc.) and all exposed metal parts ofcabinet (antennas, handle bracket, metal cabinetscrewheads, metal overlays, control shafts, etc.).SAFTY PRECAUTIO

8、NSLEAKAGE CURRENT CHECKMeasure the AC voltage across the 1500 resistor.The test must be conducted with the AC switch on andthen repeated with the AC switch off. The AC voltageindicated by the meter may not exceed 0.3V.A readingexceeding 0.3V indicates that a dangerous potentialexists, the fault must

9、 be located and corrected.Repeat the above test with the DVD VIDEO PLAYERpower plug reversed.NEVER RETURN A DVD VIDEO PLAYER TO THECUSTOMER WITHOUT TAKING NECESSARYCORRECTIVE ACTION.READING SHOULD NOT EXCEED 0.3VDVD VIDEO PLAYERAC OUTLETAC VOLTMETERTest all exposed metal.Voltmeter Hook-up for Leakag

10、e Current Check0.15uF 150V AC150010W(5000 per voltor more sensitivity)Good earth groundsuch as a water pipe,conduit, etc.The lightning flash with arrowhead symbol, within anequilateral triangle, is intended to alert the user to thepresence of uninsulated “dangerous voltage“ within theproducts enclos

11、ure that may be of sufficient magnitude toconstitute a risk of electric shock to persons.The exclamation point within an equilateral triangle isintended to alert the user to the presence of importantoperating and maintenance (servicing) instructions in theliterature accompanying the appliance.3.0 IN

12、STRUCTION FOR USE 4.0 MECHANICAL INSTRUCTION1. Remove 8pcs of screws on the side of bottom cabinet. 2. up-plug all the wire connecter from main board, The wire connectors are for: DVD loader, battery board and TFT driver board, and speaker. 3. up-plug the FFC from DVD driver, then you can take out t

13、he DVD Driver. Remove all the screws on the main board, then take the main board from bottom cabinet. 4. Remove the flex cable on the bottom side. 5. Remove all the screws on the buttery board, then take out the buttery with buttery board. 4.0 MECHANICAL INSTRUCTION6. Remove 6pcs screws from key boa

14、rd. 7. Remove 6pcs of screws on the display frame. Carefully open the display frame with the catches by screwdriver.( There are six catches as shown in the pictures) Then you can see next picture. 8. To remove the TFT, de-soldering the wire connected between TFT and TFT board first. (Please note the

15、 wire location as shown in picture during re-assembly) And up pulg wire connecter from TFT board and TFT driver. Take out the TFT board from cabinet using eradicator. 9. To remove the hinge, remove the screws on the hinge. 5.0 TROUBLESHOOTING SYMPTOM: BATTERY NO POWER StartCheck Battery capacity?BATTERY CANT Power ONCheck charging function OK?SET OK?No Defect, return set to CustomerCheck adaptor power-ON OK?noCheck the Power-ON button and cable OK?Replace Main BoardReplace Button or CableyesYesNONoYesYesNo