Philips-PET-718-Service-Manual(1) 电路图 维修手册.pdf
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1、DVD Portable Player PET714/PET718 All version 3141 785 31674 Version 1.4 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 d
2、i ricambio 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 GBWa
3、rning ! 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! D
4、KAdvarse ! 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 Pi
5、ckup?Head?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
6、?wire,etc.?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
7、SAFTY NOTICE 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, c
8、onduit, 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
9、 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 TH
10、E CUSTOMER 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, condui
11、t, etc. 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
12、 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 1 Remove 7pcs of screws on the bottom c
13、abinet and remove 1pc of screw in middle cabinet (we can find it after open CD door) 2 Open the bottom cabinet carefully and unplug the wire connector of key board from the main board. (left bottom side) 3 Unplug all the wire connector from main board. (The wire connectors are for: DVD loader, batte
14、ry board and TFT driver board, and speaker.) Remove all the screws on the main board and then take the main board from bottom cabinet. 4 Remove the flex cable on the bottom side. 4.0 MECHANICAL INSTRUCTION 5 Remove all the screws on the battery board and then take out the battery with battery board.
15、 6 Remove 11pcs screws from key board. 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 picture) 8 To remove the TFT, de-soldering the wire connected between TFT and TFT board first. (Please note th
16、e wire location as shown in picture during re-assembly) And unplug wire connector from TFT board and TFT driver. Take out the TFT board from cabinet using eradicator. 4.0 MECHANICAL INSTRUCTION 9 To remove the hinge, remove the screws on the hinge. 5.0 TROUBLESHOOTING SYMPTOM: BATTERY NO POWER Start
17、 Check Battery capacity? BATTERY CANT Power ON Check charging function OK? SET OK? No Defect, return set to Customer Check adaptor power-ON OK? no Check the Power-ON button and cable OK? Replace Main Board Replace Button or Cable yes Yes NO No Yes Yes No 5.0 TROUBLESHOOTING SYMPTOM: NO IMAGE / NO SO
18、UND SYMPTOM: NO IMAGE OUTPUT ( THE PANEL SHOW BLUE PICTURE) Start Check the external AV Cable TYPEnote 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: N
19、O SOUND COMES FROM SPEAKER Start Check the Connection OK?Reinsertion Check speaker OK? Replace Main 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
20、 NO Yes Yes Cable ReinsertionNO Check DVD-Loader connection OK? 5.0 TROUBLESHOOTING SYMPTOM: ADAPTOR 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
21、 NO Yes No YES OK 5.0 TROUBLESHOOTING SYMPTOM: REMOTE CONTROL CANNOT WORK SYMPTOM: THE REMOTE CONTROL 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
22、top boardNONO OK 5.0 TROUBLESHOOTING SYMPTOM: NO SOUND FROM HEADPHONE 5.0 TROUBLESHOOTING SYMPTOM: 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 c
23、ustormerOK Replace top boardNO OK OK 5.0 TROUBLESHOOTING SYMPTOM: KEY & BOTTON FAILURE SYMPTOM: Key & Botton Fail Start Check KEY board OK? Replace main board NO Yes Yes Cable ReinsertionNO Check CABLE form board to board connection OK? Return to custormerOK Replace KEY board OK 5 5 4 4 3 3 2 2 1 1
24、DD CC BB AA SDRAM FLASH TFT Driver BOARD MOTO DRIVE AUDIO L AUDIO R 3.3V 1.8V +15V-10V AUDIO RAUDIO L DVD BOARD AUDIO L VIDEO AUDIO R AUDIO L AUDIO R SPEAKER L-CH SPEAKER R-CH DC-DC AMP RST +5V +3.3V BATTERY CHARGER BOARD KEY BOARD DECK PANEL+BACLKLIGHT 1.0 PET714 block diagram C 11Friday, January 0
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