Philips-PET-712-Service-Manual电路原理图.pdf

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1、DVD Portable Player PET712 All version 3141 785 32562 Version 1.2 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.CAUTIO

12、NUse of controls or adjustments or performance ofprocedures other than herein may result in hazardousradiation exposure or other unsafe operation.- VOL +Volume control. Skip to the previous/next chapter, track or title.3.0 INSTRUCTIONS FOR USE 1 23128 910Stop playback or erase a program.Switch the p

13、ower on/off.11POWER/IR/CHRPower /remote sensor /chargingindicator. MAIN UNIT CONTROLPOWEROPENAVOUTOpen the disc door to insert or remove disc.Audio/Video output.SETUPMENUEnter or exit the system menu. Enter or exit the disc contents menu.4Start or interrupt playback.DC IN Power supply socket.1413 DC

14、 OUTDC output./5671423127681310591114Up / down cursor.,Headphone jacks.PHONES 1 & 2CAUTION Use of controls or adjustments or performance of procedures other than herein may result in hazardous radiation exposure or other unsafe operation. POWER ON/OFFSwitch the player on / off.3.0 INSTRUCTIONS FOR U

15、SE 123left / right cursor.DISPLAY CONTROLS- VOL +DC IN 12VAV INPower supply socket.Volume control.Audio/video input.4Headphone jack.DISPLAYAdjust the display value ofthe system.567VIDEO INVideo input.812453768,4.0 MECHNICAL INSTRUCTIONSPET711Fig.11. Back View as Fig.1Remove screws and broken connect

16、ions to remove the top.2. Broken connections to remove the loading assy as Fig.2. 3.Fig.2Fig.3Remove screws to remove the main PCB as Fig.3.4.Fig.4Divided the top into the door and function button discreteness and the middle cabinet discreteness, remove screws to remove the function PCB from the doo

17、r and function button discreteness as Fig.4.4.0 MECHNICAL INSTRUCTIONSPAC133Fig.11. Back View as Fig.1Remove screws to remove base2. Broken connection of speaker and main PCBand function PCB and LCD as Fig.23.Fig.2Fig.3Remove main PCB as Fig.3Remove screws to remove main PCB.4.Fig.4Remove speakers and remove screws to remove TFT board shield and function PCB and TFT LCD as Fig.4