Philips-PET-744-Service-Manual(1) 电路图 维修手册.pdf
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1、DVD Portable Player PET744 Published by BU AVM BL Printed in the Netherlands Subject to modification 3141 785 33611 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 nell
2、e 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 not
3、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 olet a
4、lttiina nkymttmlle laseristeilylle. l katso steeseen! DKAdvarse ! Usynlig laserstrling ved bning nr sikkerhedsafbrydere er ude af funktion. Undg udsaettelse for strling. 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
5、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, etc.) and all exposed metal parts of cabinet (antennas, handle bracket, metal cabinet screwheads, metal overlays, control
6、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 the AC switch off. The AC voltage indicated by the meter may not exceed 0.3V.A reading exceeding 0.3V indicates that a dange
7、rous 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 CUSTOMER WITHOUT TAKING NECESSARY CORRECTIVE ACTION. READING SHOULD NOT EXCEED 0.3V DVD VIDEO PLAYER AC OUTLET AC VOLTMETER Test
8、 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. The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence o
9、f 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 an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) i
10、nstructions in the literature accompanying the appliance. 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?Head?consists?of?a?laser?diode?that?is?very?suscepti
11、ble?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,etc.?to protect?the?laser?diode?form?damage?by?stat
12、ic?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 3.0 INSTRUCTION FOR USE Disassembly Procedure on PET744 R
13、emove seven screws on back cabinet to separate top cabinet and back cabinet. screws 7pcs Generally open the front cabinet. Remove six screws and disassemble the connecter on the Main board. screws 6pcs.connecter 5pcs. 4.0 MECHANICAL INSTRUCTION Remove nine screws on the Key board and DVD LOADER. Rem
14、ove three screws on the Battery and Battery board. Remove the speaker grill and 4pcs screws. . Remove the 2pcs screws on the TFT and IR 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 conne
15、ction 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 Change
16、 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 POWE
17、R 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 b
18、oard 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 PET744 BLOCK DIAGRAM IR KEY SPEAKER CT909P-Y 1.8V AVOUT 3.3V 5 V FLASH 8M AU 7 DIGITAL PANEL SDRAM 16*16 CVBS BATTERY R
19、 G B MOTOR DRIVER TOPRAY3000 6019 EARPHONE TFT BOARD 9 V 4558 DC - DC CT901 AUDIO-OUT 9V DC -IN LDO SD CARD 5654(DC) MOTOR DRIVER 6849(AC) VIDEO-OUT 3.3 V 5 5 4 4 3 3 2 2 1 1 DD CC BB AA 3E3 2N3906 1 2 B C 2N3904 B C E1 2 7.0 ELECTRICAL DIAGRAM CIRCUIT DIAGRAM-AUDIO&VIDEO AU_R_OUT +Vcc AU_R_OUT AV-O
20、UT-L AC +Vcc AC AU_L_OUT AV-OUT-R AU_L_OUT AV-OUT-L AV-OUT-R A_R_SPEAKER A_L_SPEAKER +9VIN +5V VOL_CONTROL DVD_CVBS HP_R_OUT SPR_L+ HP_L_OUT HP_R_OUT SPR_R- SPR_R+ SPR_R- SPR_L- VOL_CONTROL HP_DET1 HP_DET1 HP_DET SPR_L+ HP_L_OUT HP_DET A_R_SPEAKER HP_DET2 SPR_R+ HP_DET2 SPR_L- DVD_CVBS AV_DET CVBS_O
21、 CVBS_O A_L_SPEAKER CVBS2 AOUT_R2 AOUT_L2 +9VIN1 +5V1 VOL_CON_PWM2 AV_DET 2 VGND VER VER VGND +9VIN +5V +5V_AMP +5V_AMP +5V_AMP +5V_AMP +5V_AMP +5V_AMP +5V_AMP +5V_AMP +5V_AMP + EC3510uF/16V 12 C216 10PF R207 750R R137 5.1K C127180PF R12510K C210 0.1uF L35FB2K2 C130 0.1uF C211 0.1uF EC34 10uF/16V 21
22、 C12222P C126 820P R140100K L36 FB2K2 R215100K ER2 MAIN EARPHONE 1 4 5 2 3 L24 FB 600R C124 180PF C26 2.2uF/0603 L35 FB2.2K R208 100K R21156 R13610K R216100K R132 75R R138100K AV1AV/OUT-JACK 6 7 1 2 3 45 6 7 R220 10K R130 22K C131 0.1uF R54 1k 12 C128 1000PF C213 10PF D13 10V 12 R21356 C20810uF/16V
23、+ - U12B NJM4558-SOP-8 5 6 7 84 +EC41 10uF/16V 12 C121180PF R144 0R R12447K L34 FB2K2 R150100K R13447K R218 NC + EC11 100uF/10V 12 C2061uF R14110K EC37 10uF/16V 21 D11 3904 2 13 R145 NC R217 10K R219 10K C215 10PF R1480 + EC40 22uF/25V 12 R21256 + - U12A NJM4558-SOP-8 3 2 1 84 R14951K C20710uF/10V/0
24、805 EC66 220uF/16V D21 BAT54C + EC3810uF/16V 12 R209 100K C214 10PF ER1 MAIN EARPHONE 1 4 5 2 3 R1470 R214 10K JK8 PIN HEADER 1X4 1 2 3 4 C20410uF/16V R129 NC EC67 220uF/16V R151 56K C129 820P R126 5.1K C209 0.1uF R48 100R R1270R C125 1000PF L321.8uH R146 22K R133100K U13 TPA6019 1 2 3 4 5 6 7 8 9 1
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