Philips-PET-988-Service-Manual 电路图 维修手册.pdf
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1、DVD Portable Player PET988 All version 3141 785 33140 Version 1.0 TABLE OF CONTENTS Chapter Technical Specification fr Reparaturen sind Original-Ersatzteile zu verwenden. I Le norme di sicurezza esigono che lapparecchio venga rimesso nelle condizioni originali e che siano utilizzati i pezzi di ricam
2、bio identici a quelli specificati. 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. CLASS 1 LASER PRODUCT 3122 110 03420 GBWarning !
3、 Invisible laser radiation when open. Avoid direct exposure to beam. SVarning ! Osynlig laserstrlning nr apparaten r ppnad och sprren r urkopplad. Betrakta ej strlen. SFVaroitus ! Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina nkymttmlle laseristeilylle. l katso steeseen! DKAdvars
4、e ! Usynlig laserstrling ved bning nr sikkerhedsafbrydere er ude af funktion. Undg udsaettelse for strling. 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. 2.1 ESD PROTECTION PREPARATION?OF?SERVICING Pickup?He
5、ad?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,e
6、tc.?to protect?the?laser?diode?form?damage?by?static?electricity. And?also,?the?LSI?and?IC?are?same?as?above. Soldering?iron with?ground?wire or?ceramic?type Ground?conductive wrist?strap?for?body. Conductive?mat The?ground?resistance between?the?ground?line and?the?ground?is?less?than?10 1M SAFTY N
7、OTICE 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,
8、 etc.) and all exposed metal parts of cabinet (antennas, handle bracket, metal cabinet screwheads, metal overlays, control shafts, etc.). SAFTY PRECAUTIONS LEAKAGE CURRENT CHECK Measure the AC voltage across the 1500 resistor. The test must be conducted with the AC switch on and then repeated with t
9、he 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 CUSTO
10、MER WITHOUT TAKING NECESSARY CORRECTIVE ACTION. READING SHOULD NOT EXCEED 0.3V DVD VIDEO PLAYER AC OUTLET AC VOLTMETER Test all exposed metal. Voltmeter Hook-up for Leakage Current Check 0.15uF 150V AC 1500 10W (5000 per volt or more sensitivity) Good earth ground such as a water pipe, conduit, etc.
11、 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 products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within
12、 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 3.0 INSTRUCTION FOR USE 4.0 MECHANICAL INSTRUCTION Disassembly Procedure 1. Take the front chan
13、ge frame away from the set; 2. Remove 8pcs of screws on the monitor front plate, then take the monitor front plate together with press fixed plate(top, bottom, right, left)away from the set; 3. Remove 7pcs of screws on the black monitor front frame as the picture shown. 4.0 MECHANICAL INSTRUCTION 4.
14、 To remove the panel and the TFT board: Firstly un-plug the housing which connect key board and TFT board. Secondly un-plug the housing connects the IR board and TFT board, Thirdly un-plug the FFC which connect TFT board and main board. Finally, dont forget the one which connect TFT board and panel
15、behind the black cabinet. Then de-soldering the wire (3pcs) which connected the panel and TFT board; Remove all the screws on the main board (2pcs), then you can take the TFT board from bottom cabinet.; Remove 2pcs screws on the IR board 5. Please be careful that when you take the panel out from the
16、 cabinet, the panel was fixed by double side tape at four corners! 6. Remove 2pcs screws on the press stand of the set; 7. Remove 2pcs screws on the bottom of the DVD bottom cabinet(as the picture shown) 8. And open the CD door to remove 2pcs screws on the DVD bottom cabinet, so we can take the DVD
17、cabinet apart. 4.0 MECHANICAL INSTRUCTION 9. Un-plug the flex FFC on the DVD board which behind the black cabinet, also one which connect with TFT board 10. Un-plug the speaker line; Remove 4pcs screws on the DVD board, and un-plug the housings which connect the DVD board and Loader, also the one co
18、nnect the DVD board and TFT board; Then you can take the DVD board out from the DVD bottom cabinet completely; And remove 3pcs screws on the DVD Loader carefully! Then you can take the DVD Loader out from the DVD bottom cabinet! 11. Remove 11pcs screws on the slide unit. Note: dont forget the 4pcs i
19、n hole, then you can take the slide unit apart from the DVD top cabinet; 12. Remove 4pcs screws on the hinge, dont forget remove the two screws on the back! 5.0 TROUBLESHOOTING SYMPTOM: NO IMAGE / NO SOUND SYMPTOM: NO IMAGE OUTPUT ( THE PANEL SHOW BLUE PICTURE) Start Check the external AV Cable TYPE
20、note and connection is OK? Replace DVD DriveCheck DVD Drive work? Replace Main Board Exchange AV cable NOTE: AV Cable TYPE from outside to Inside L-Audio, R-Audio, Video, Ground no yes no yes SYMPTOM: NO SOUND COMES FROM SPEAKER Start Check the Connection OK?Reinsertion Check speaker OK? Replace Mai
21、n Board Change the speaker no yes no yes 5.0 TROUBLESHOOTING SYMPTOM: THE DVD DRIVE DOES NOT WORK SYMPTOM: THE DVD DRIVE DOESNT WORK Start Replace DVD- Loader Check the DVD-Loader OK? Replace main board NO Yes Yes Cable ReinsertionNO Check DVD-Loader connection OK? 5.0 TROUBLESHOOTING SYMPTOM: ADAPT
22、OR CANNOT POWER ON Start Check Adaptor OK? Adaptor can not Power ON Change adaptorSET OK? Return set to Customer NO Check the Power-ON button and cable OK? Replace Main Board Replace Button or Cable Yes NO Yes No YES OK 5.0 TROUBLESHOOTING SYMPTOM: REMOTE CONTROL CANNOT WORK SYMPTOM: THE REMOTE CONT
23、ROL CAN NOT WORK Start Check TOP-board OK? Replace main board Yes Yes Cable ReinsertionNO Check CABLE form bottom board to top board connection OK? Replace IR receiver Return to custormer OK OK Replace top boardNONO OK 5.0 TROUBLESHOOTING SYMPTOM: NO SOUND FROM HEADPHONE 5.0 TROUBLESHOOTING SYMPTOM:
24、 LED DISPLAY FAILURE SYMPTOM: LED Display Fail Start Check TOP-board OK? Replace main board NO Yes Yes Cable ReinsertionNO Check CABLE form Main board to top board connection OK? Replace LED Return to custormerOK Replace top boardNO OK OK 5.0 TROUBLESHOOTING SYMPTOM: KEY & BOTTON FAILURE SYMPTOM: Ke
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