Philips-PET-721-S-Service-Manual(1) 电路图 维修手册.pdf
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1、DVD Portable Player PET721C/D/S All version Published by BU AVM FK Printed in the Netherlands Subject to modification 3141 785 33742 Version 1.2 (wk934) TABLE OF CONTENTS Chapter Technical Specification fr Reparaturen sind Original-Ersatzteile zu verwenden. I Le norme di sicurezza esigono che lappar
2、ecchio venga rimesso nelle 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
3、leakage current must not 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 suojalukit
4、uksen ohitettaessa olet 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,?ra
5、diation?of?laser may?be?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?migh
6、t?be?shortened.?When?replacing,?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
7、The?ground?resistance 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,parallele
8、d by a 0.15uF 150V AC 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 1
9、500 resistor. The test 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
10、 the DVD VIDEO PLAYER 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 (5
11、000 per volt or more sensitivity) 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 ma
12、gnitude to constitute 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 Disassem
13、bly Procedure on PET721D Remove eight screws on back cabinet to separate top cabinet and back cabinet. screws 8pcs Generally open the front cabinet. Disassemble the connecter on DVD top cabinet. 4.0 MECHANICAL INSTRUCTION Remove two screws on the battery and battery board. screws 2pcs Remove three s
14、crews on the Main board. screws 3pcs Disassemble the black cloth on the DVD LOADER. Disassemble the connecter and black cloth on the TFT board. 5.0 TROUBLESHOOTING SYMPTOM: NO IMAGE / NO SOUND SYMPTOM: NO IMAGE OUTPUT ( THE PANEL SHOW BLUE PICTURE) Start Check the external AV Cable TYPEnote and conn
15、ection 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 Main Board Chang
16、e 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: ADAPTOR CANNOT POW
17、ER 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: KEY & BOTTON FAILURE SYMPTOM: Key & Botton Fail Start Check KEY
18、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 44 33 22 11 SPK_R 3.3V RF AV-OUT RCA 4558 SPEAKER SDRAM 4*16 SW62429 DVD-AU-L 5V RGB DC-IN 7” PANEL AMP SPK_L SPI Flash 8M T-CON L
19、DO 1117 3.3V-1.8V MOTO Drive DVD-CVBS DC-DC 9V-5V 1.8V DVD-AU-R AT5654 DM520 Foryou 0.3WX2 VOLUME CONTROL 2822D MT1389DLE LED BL OP OPU 1200-X Hitachi RF DC-DC 9V-3.3V 5V DC-DC 5V-10V DC 9V DC 9V PET741D CIRCUIT BLOCK AOUT_L AC +Vcc AOUT_R +Vcc R_HP_IN CVBS_OUT AV-OUT-L CVBS AV-OUT-R SPR R_HP_IN A_R
20、_SPEAKER L_HP_IN A_L_SPEAKERAV-OUT-L AV-OUT-RA_R_SPEAKER A_L_SPEAKER VCC3 AOUT_R MUTE_DAC VCC AOUT_L A_MUTE AV-OUT-R CVBS DC_IN VCC9 SPL AC VCC9 L_HP_IN AV-OUT-L VCC31 AOUT_R2 MUTE_DAC2 VCC1,2 AOUT_L2 CVBS2 DC_IN1 VCC91 VER VER VCC9 Q192307 2 13 EC4333uF C116 150P/820P + EC3310uF/16V + C103 10uF/16V
21、 C118 0.1uF C119 0.1uF R115 5.1K C106100pF R10610K L37FB2K2 C112 0.1uF VJ2 VOLUME 10K 1 2 3 4 5 1 2 3 4 5 R147 4.7R R121100K C105 820p +EC37 47uF/25V R120NC L41FB2K2 R146 4.7R C117 0.1uF R140 56K/30K C107 100pF C120 0.1uF L38FB2K2 R11410K Q18 3904/nc R119100K C115 0.1uF JACK1AV/OUT-JACK 6 7 1 2 3 45
22、 6 7 R109 24K/5.6K/18K C113 0.1uF R142 200R/560R C110 1000pF L42FB2K2 + C109 10uF/16V + - U9B NJM4558-SOP-8 5 6 7 84 +EC36 47uF/16V L361.8uH C102100pF + EC41 10uF/16V R1251K/nc R137 200R/560R R116 360R/330R R105 33K/30K R392R(0805) + EC4410uF/16V R127100K R112 33K/30K C122 0.1uF D12 IN4148 +EC39 100
23、uF/16V R131 680K R122NC R118 NC R138 10K R145 10K + EC35 22uF/25V R141 56K/30K + - U9A NJM4558-SOP-8 3 2 1 84 R12651K R123NC + EC3410uF/16V C121 150P/820 + EC42100uF/16V VJ1 VOLUME 10K 1 2 3 4 1 2 3 4 VER1 earphone 1 2 34 5 6 7 8 9 10 11 U10 APA2822 1 2 3 4 5 6 7 8 +EC46 100uF/16V R113 180R 1% + EC3
24、8 100uF/16V R110 NC R128 56K C111 820p R107 5.1K L40FB2K2 L34 0 C104 1000pF R108 360R/330R R117 24K/5.6K/18K R124NC + EC45100uF/16V C108 100pF R92100K EC4033uF L35FB2K2 C123 0.1uF L39 FB600R R1302R(0805) 7.0 ELECTRICAL DIAGRAM CIRCUIT DIAGRAM-VIDEO & VEDIO OUTPUT SDRAM (Dual Layout) IIC S-FLASH S-FL
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