Philips-PET-745-Service-Manual(1) 电路图 维修手册.pdf
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1、DVD Portable Player PET745/12 Published by BU AVM FK Printed in the Netherlands Subject to modification 3141 785 33621 Version 1.1 TABLE OF CONTENTS Chapter Technical Specification fr Reparaturen sind Original-Ersatzteile zu verwenden. I Le norme di sicurezza esigono che lapparecchio venga rimesso n
2、elle condizioni originali e che siano utilizzati i pezzi di 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 n
3、ot exceed 0.5mA. CLASS 1 LASER PRODUCT 3122 110 03420 GBWarning ! 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 ole
4、t alttiina nkymttmlle laseristeilylle. l katso steeseen! DKAdvarse ! 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?b
5、e?received. 2.1 ESD PROTECTION PREPARATION?OF?SERVICING Pickup?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?r
6、eplacing,?use?a?conductive?mat,?soldering?iron?with?ground?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
7、between?the?ground?line and?the?ground?is?less?than?10 1M 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
8、capacitor between a knomn good earth ground (water pipe, conduit, 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
9、 must be conducted with the AC switch on and then repeated 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
10、power plug reversed. NEVER RETURN A DVD VIDEO PLAYER TO THE 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 s
11、ensitivity) Good earth ground such as a water pipe, conduit, 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
12、a risk of electric shock to persons. The exclamation point 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 3.0 INSTRUCTION FOR USE Disass
13、embly Procedure on PET745 Remove eight screws on back cabinet to separate top cabinet and back cabinet. screws 8pcs Generally open the front cabinet. Disassemble hous and connecter. 4.0 MECHANICAL INSTRUCTION Disassemble hous and connecter,and take out the DVD LOADER. Disassemble hous and screws,and
14、 take out the main board、sw board. screws 7pcs Remove seven screws on KEY board.screws 7pcs Remove one screws fabrics and connecter hous on IR board. screws 1pcs and connecter hous 1pcs Remove fabrics and hous. Remove the screws on the TFT board.screws 1pcs 5.0 TROUBLESHOOTING SYMPTOM: NO IMAGE / NO
15、 SOUND 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
16、: NO 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 bo
17、ard 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
18、Yes NO Yes No YES 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 DD CC BB AA SPHE
19、8202-128 YD4558 TDA2822 AUDIO-R AV-OUT CVBS AUDIO-L SPEAK 0.2W 16R DC IN 9V 9V TO 5V 9V TO 3.3V 5V DC 5V DC 9V LED B/L 7 PANEL SPHE6600 SPHE230 TV RECEIVER DTV TUNER ANT Y/C INPUT R/G/B TCOM DC-5V VIDEO DECORDER MST720 MOTOR DRIVER DVD DECK 1200X SDRAM 4*16M SPI FLASH 16M DATA SWAP RF 3.3V LDO 3.3V
20、TO 1.8V 1.8V 3.3V SPK-R SPK-L PET745 CIRCUIT BLOCK 5 5 4 4 3 3 2 2 1 1 DD CC BB AA A&D Technology MAIN BOARD CIRCUIT DIAGRAM-AUDIO A_MUTE AOUT_FR A_MUTE AOUT_FL A_L_SPEAKER A_R_SPEAKER SPR L SPL R AC AC AV_OUT_R AV_OUT_L AV_OUT_L AV_OUT_R A_R_SPEAKER A_L_SPEAKER A_MUTE MUTE AOUT_FR2 AOUT_FL2 ML_OUT
21、MR_OUT MUTE GND GND GND GND GND GND GND GND GND GNDGND +9V VER +9V VER DVCC3 J2 SPK1 2 3 4 C290.1uF Q8SSP0403 1 32 +EC12 100uF/10V 12 C320.1uF R33 100K + EC13 10uF/10V 12 R34 470 Q3 2N3904 L5FB2K2 R614.7R C23 0.1uF C300.1uF R604.7R 120pFC15 EC4 10uF/16V R55 10K R53 100K +EC17 100uF/10V 12 + EC14100u
22、F/16V 12 + EC16100uF/16V 12 +EC11 100uF/25V 12 200pF C16 C27 820P/NC R5630K 120pFC19 R3510K/0402 L6FB2K2 R42 5.6K C25 0.1uF R371K/0402 R38180 C33 0.1uF C26 0.1uF R27180 EC5 10uF/16V C28 0.1uF R512R(0805) EC7 10uF/16V EC6 10uF/16V R28 8.2K R46100K 200pF C20 R2627K L4 FB2K2 47pF C18 R3627K J1VOLUME 10
23、K 1 2 3 4 5 1 2 3 4 5 R294.7K R44 470 R39 8.2K Q6 2N3904 R404.7K 47pF C22 1200pF C17 1200pF C21 R301K + - U3B NJM4558 5 6 7 84 + - U3A NJM4558 3 2 1 84 R411K R522R(0805) R32 100K R31 5.6K +EC9 10uF/10V 12 R58200 R4551K R43 100K +EC10 47uF/25V 12 C24 0.1uF D2 IN4148 12 VER1 earphone 1 2 34 5 6 7 8 9
24、10 11 R48 56K L3FB600R R59 10K + EC15 10uF/10V 12 R54200R U4 APA2822 1 2 3 4 5 6 7 8 C31 820P/NC R5730K + EC8 22uF/25V 12 Q5 2N3904 1 3 2 Q4 2N3906 32 1 5 5 4 4 3 3 2 2 1 1 DD CC BB AA POWER OFF CHARGE POWER ON H L G C 1 D 2 E S B 3 MAIN BOARD CIRCUIT DIAGRAM-POWER DCIN EN DCINEN CHARG ON/OFF ON/OFF
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