Philips-PET-742-Service-Manual(1) 电路图 维修手册.pdf
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1、DVD Portable Player PET742 All version Published by BU AVM FK Printed in the Netherlands Subject to modification 3141 785 33601 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
2、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 leakage curre
3、nt 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 suojalukituksen ohitett
4、aessa 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,?radiation?of?la
5、ser 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?might?be?shortene
6、d.?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 The?ground?re
7、sistance 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
8、 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 1500 resistor.
9、 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 the DVD VIDE
10、O 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 (5000 per volt
11、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 magnitude to co
12、nstitute 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 Disassembly Procedure
13、 on PET742 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 take out the m
14、ain 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 SOUND SYMPTOM:
15、 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: NO SOUND COME
16、S 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 NO Yes Yes
17、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 NO Yes No Y
18、ES 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 44 33 22 11 SPK_R 3.3V RF AV-OU
19、T RCA 4558 SPEAKER SDRAM 4*16 SW62429 DVD-AU-L 5V RGB DC-IN 7” PANEL AMP SPK_L SPI Flash 8M T-CON LDO 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 PET74
20、2 CIRCUIT BLOCK GREEN POWER ON INDICATION CHARGE ON INDICATION RED CHARGE battery charge DISCHARG POWER ON POWER OFF POWER MAIN BOARD POWER CIRCUIT DIAGRAM RFV33 V18 B-CHARG V18 +5V RFV33 AVCC DV33 DC_IN AVCC Low_Voltage_Det V33 Low_Voltage_Det ON/OFF B-CHARG ON/OFF DC_IN DC_IN DV33 +9VDCIN VGL VGH
21、PS RFV332 +5V2,4 DV332,3 AVCC2 V182 DC_IN4 Low_Voltage_Det 2 V18 RFV33 V33 DC_IN DV33 V33 AVCC V33 GND GND GND GND GND GND GND GND GND GND DC_IN GND GND GND GND GND V33 GND +5V +5V GND GND GND GND GND +9VIN C15 1uF 12 C8 0.1uF C0402 C7 1uF 12 1 2 3 C11 1uF(0805) R9 4.7K R22 10K R0402 D115V 1N4148/SM
22、D 12 J3 DC JACK(+9V+12V) JK9 1 2 3 BATTERY DIP4-1.25 1 2 3 4 R20 1K C13 0.1uF C0402 L2NC/10uH L3225 R12 0R U2 SS7701 IC5 1 2 3 4 5 CE GND VFB EXT VIN R2560R R0402 C20 0.1uF C0402 R21 10 R0603 C8 1uF 12 C2 NC C0402 R10 10 R0603 +EC10 100uF/10V 7/5 C14 0.1uF C0603 DN3 SS214U 1 2 3 R15 4.7k 12 L6 22uH
23、SMTCD54 R30 R0603 D916V 1N4148/SMD 12 D6 16V 12 R2422K R0402 R14 10K R2318K R0402 L1L-851 TFL-4-2A 1 3 2 4 L522uH SMTCD54 C10 0.1uF Q6 2N3906 2 13 C19 0.1uF C0402 F12A_FUSE SMT6.3 + EC1 100uF/25V 8/5 C6 1000pF C0603 Q1CES2307 SOT23 D815V 1N4148/SMD 12 R19 10K J2switchpower SWITCHPOWER 1 2 34 5 6 R16
24、 1k + EC3 100uF/10v 7/5 D6 SK34 12 +EC2 100uF/10V 7/5 Q7 3904 2 13 C1 0.1uF C0402 R17 1k 12 U1 SS7701 1 2 3 4 5 CE GND VFB EXT VIN C6 0.1uF 12 + EC4 100uF/25V D116.2V 1N4148/SMD 12 R171K D4 SK34 SS14 12 D5 12V/7V5 12 C15 1uF(0805) C0805 + EC5 100uF/10v 7/5 Q5 3904 SOT23 R26 10K R0402 Q2 3904 SOT23 C
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