Philips-DCP-750-Service-Manual 电路图 维修手册.pdf
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1、DVD Portable Player DCP750 All version 3141 785 31625 Version 1.5 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 di ricam
2、bio 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 GBWarning !
3、 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! DKAdvars
4、e ! 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 Pickup?He
5、ad?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?wire,e
6、tc.?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 SAFTY N
7、OTICE 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, conduit,
8、 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 with t
9、he 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 THE CUSTO
10、MER 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, conduit, etc.
11、 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 within
12、 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 6pcs of screws on front side of botto
13、m cabinet. (Please note the left hand side screw is shorter than others, make sure do not put long screw during re-assembly, otherwise it will damage the middle cabinet!) 2 Remove 2pcs of screw on top side of bottom cabinet. 3 Remove 2pcs of screws on middle cabinet. 4 Open the bottom cabinet carefu
14、lly, unplug the wire connector of key board from the main board. (left bottom side) 4.0 MECHANICAL INSTRUCTION 5 Unplug another wire connector of Ipod board from main board. (right top side) 6 To remove main board from cabinet, unplug / disconnect the wires on top side first. 7 And then remove all s
15、crews on main board connected with bottom cabinet. 8 To remove battery board and battery from cabinet, remove the screws on battery board connected with bottom cabinet first, and then pull out the battery from taped foam carefully. Make sure battery without damage. 4.0 MECHANICAL INSTRUCTION 9 Be ca
16、reful not to broken the wire connection between battery and battery board. Otherwise you can re-soldering them as shown in picture. 10 To remove DVD loader, unplug the wires connected with main board. 11 And then remove the flex cable on the bottom side. 12 The middle cabinet assy overall 4.0 MECHAN
17、ICAL INSTRUCTION 13 To remove the key board, remove the screws as shown in picture. 14 To remove the Ipod board, remove the screws on slider cover and then remove some tapes attached on middle cabinet and wires. 15 To remove front cabinet, remove the screw on display frame first. Carefully open the
18、display frame with the catches by screwdriver. (There are six catches as shown in picture) 16 To remove the TFT, de-soldering the wire connected between TFT and TFT board first. (Please note the wire location as shown in picture during re-assembly) 4.0 MECHANICAL INSTRUCTION 17 Unplug the flex cable
19、 connected with TFT board at the backside also. 18 To remove the TFT board assy, de- soldering the wires between speaker and TFT board. (Black wire is connected to “- ve” port and red wire is connected to “+ve” port) 4.0 MECHANICAL INSTRUCTION General Service Information # PI-07/011 Topic: OEM chang
20、e TFT panel from old version to new version Details: OEM will change a new version TFT panel on DCP750/12 and the old version TFT panel (996510001514) will stop production. Change implementation from serial no. GS010706005421 (i.e. GS01xxxxxxxx is using new version panel and GS00 xxxxxxxx is using o
21、ld version panel) In case to replace a new TFT panel (996510002002) on the set with serial no. GS00 xxxxxxxx, we should also replace the 33k ohm resistor by 18k ohm resistor on the position R210 of old version TFT driver board (996510001592) after TFT replacement. Herewith the specification of R210:
22、 RESISTOR:R210 PACKAGE: 0603 VALUE:18K TOLERANCE:10 Component layout diagram please refer section 8. 5.0 TROUBLESHOOTING SYMPTOM: BATTERY NO POWER Start 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
23、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 SOUND SYMPTOM: NO IMAGE OUTPUT ( THE PANEL SHOW BLUE PICTURE ) Start Check the external AV Cable TYPEnote and connection is OK? Replace DVD DriveChec
24、k 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 the speaker no yes no yes 5.0 TR
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