Philips-PET-738-Service-Manual电路原理图.pdf

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1、DVD Portable Player PET730/PET732/PET735/PET738 All version 3141 785 31597 Version 1.7 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 utilizzat

2、i i pezzi di ricambioidentici 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 03420

3、GB Warning !Invisible 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

4、Advarse !Usynlig laserstrling ved bning nr sikkerhedsafbrydere erude af funktion. Undg udsaettelse for strling.Whenthepowersupplyisbeingturnedon,youmaynotremovethislasercautionslabel.Ifitremoves,radiationoflasermaybereceived.2.1 ESD PROTECTIONPREPARATIONOFSERVICINGPickupHeadconsistsofalaserdiodethat

5、isverysusceptibletoexternalstaticelectrocity.Althoughitoperatesproperlyafterreplacement,ifitwassubjecttoelectrostaticdischargeduringreplacement,itslifemightbeshortened.Whenreplacing,useaconductivemat,solderingironwithgroundwire,etc.toprotectthelaserdiodeformdamagebystaticelectricity.Andalso,theLSIan

6、dICaresameasabove.SolderingironwithgroundwireorceramictypeGroundconductivewriststrapforbody.ConductivematThegroundresistancebetweenthegroundlineandthegroundislessthan101MSAFTY NOTICEPlug the AC line cord directly into a 120V AC outlet (donot use an isolation transformer for this check). Use anAC vol

7、tmeter, having 5000 per 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,

8、etc.).SAFTY PRECAUTIONSLEAKAGE 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 potentiale

9、xists, the fault must 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.Voltmet

10、er Hook-up for Leakage 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“ with

11、in theproducts enclosure 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

12、 the appliance.CAUTIONUse of controls or adjustments or performance ofprocedures other than herein may result in hazardousradiation exposure or other unsafe operation.POWER/IR/CHRPower /remote sensor /chargingindicator. POWERSwitches the player on / off3.0 INSTRUCTIONS FOR USE12316128910Confirms sel

13、ectionPress once to stop playbackand store the stop position. Press twice to stop playback completely.Headphones jack11A/V OUTAudio/video output jackDVD PLAYER LAYOUTPHONES 1 & 2A/V INUSBAudio/video input jackUSB connector- VOL +OPTIONMENUAccess additional functions.Volume control.Search backward (

14、) or searchforward ( ). Display MUNE page.Up / down / left / right cursor4Start / pause / resume playbackOPENOpens disc door to insert orremove disc15OKConfirm seletionDC IN 9VPower supply socketRESETReset the player when it ishanged up.1413 COAXIALDigital Audio output jack12374895610 11 12 13 14151

15、6/567 ,Car mounting screw holeSUBTITLESubtitle language selector.REMOTE CONTROL17416128910For VCD menu page.11A - BTo repeat or loop a sequencein a title.RETURNSETUPOPTIONEnter SETUP menu.Access additional functions.0 - 9Access additional functions.VOL +/-Volume control.Numeric keypad.Up / down / le

16、ft / rightnavigation key. Start / pause / resume playbackMENUDisplay MENU page.15OKConfirm seletion.Mute player volumeAUDIOAudio language selector.ZOOMEnlarge video image.1413Skip to next chapter, track or title.56DISPLAYAdjust the display value of the system.Skip to previous chapter, track or title

17、.32 ,253416789101112131415164.0 MECHNICAL INSTRUCTIONSFig.1soldered1. Back side of the set as shown in Fig.1Remove the screws on the base cover.2. Soldered short pattern for laser diode as shown in Fig.23.Fig.2Remove the screws on button PCB board as shown in Fig.3Disconnect the flex from TFT LCD.Di

18、sconnect the flex from DVD loader & PCB boards.Fig.34.Then it will able to remove DVD loader and main PCB and Lithium battery as shown in Fig.4Fig.45. Remove speaker grill and screw cushion on display frameas shown in Fig.5Fig.56. Remove the screws on display frame as shown in Fig.6.8. Disconnect th

19、e flex between IF board, power board and TFT LCD.Remove the screws on IF board, power board and TFT LCD. As shown in Fig.8.7.Fig.6Remove the screws on IF board as shown in Fig.7.Fig.7Fig.85.0 TROUBLESHOOTING noreplace cable/adapterSYMPTOM: NO POWER, NO GREEN LEDCheck if thepower cableandAC adapterOK

20、?No defect, returnset to customeryesstartset OK?Check if thepower and playbutton OK?replace connectorand switch unitreplace MAINBOARDgo to otherSYMPTOMnoyesyesnoreplace DVD driveSYMPTOM: NO IMAGE OR SOUND COMES OUT FROM THE EXTERNAL OUTPUTstartCheckoperation ofthe DVD drive.Does the DVDdrive work?yesnoReplace the mainboard or theconnector