Philips-DVP-2851-Service-Manual(1) 电路图 维修手册.pdf

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1、 TABLE OF CONTENTS Page Version 1.0 Service Manual PHILIPS GB All rights reserved. No part of this publication may be reproduced, stored in aretrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips. CLASS

2、 1 LASER PRODUCT Service Service DVD Player Copyright 2011 Philips Consumer Electronics B.V. Eindhoven, The Netherlands Published by Arya - 1252 BU AVM Printed in The Netherlands Subject to modification 3141 785 39350 DVP2851/55 Specification.1-2 Safety Instruction,Warning fr Reparaturen sind Origin

3、al-Ersatzteile zu verwenden. I Le norme di sicurezza esigono che lapparecchio 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 ex

4、posed 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 ! Invisible laser radiation when open. Avoid direct exposure to beam. SVarning ! Osynlig laserstrlning nr apparaten r ppnad och sprren r urkopp

5、lad. Betrakta ej strlen. SFVaroitus ! Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina nkymttmlle laseristeilylle. l katso steeseen! DKAdvarse ! Usynlig laserstrling ved bning nr sikkerhedsafbrydere er ude af funktion. Undg udsaettelse for strling. Caution: These servicing instructi

6、ons are for use by qualified service personnel only. To reduce the risk of electric shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. 1-7 When?the?power?supply?is?being?turned?on,?you?may?not?remove?this?laser?cautions?label

7、.?If?it?removes,?radiation?of?laser may?be?received.1 1.1 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?replac

8、ement, 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?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?b

9、ody. Conductive?mat The?ground?resistance between?the?ground?line and?the?ground?is?less?than?10 1M 1-8 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 150

10、0 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 shafts, etc.). SAFTY PRECAUTIONS LEAKAGE CURRENT CHECK Measure the

11、 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 dangerous potential exists, the fault must be located and corrected. Re

12、peat 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 all exposed metal. Voltmeter Hook-up for Leakage Current Check 0.

13、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 of uninsulated dangerous voltage within the products enclosure that

14、 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) instructions in the literature accompanying the appliance. 1-9 1-10

15、 PCB BOARD LOCATION: VERSION VARIATIONS Type / Versions DVP2851 Service Policy/55 MAIN BOARDM+C M+C LOADERM Tips： Board in used POWER & FRONT BOARD C - Component Lever Repair M - Module Lever Repair X - Used LOADER MAIN BOARD POWER &FRONT CONTROL BOARD Mechanical and Dismantling Instructions Dismant

16、ling Instruction The following guidelines show how to dismantle the player. Step1: Remove 5 screws around the Top Cover, and then remove the Top Cover (Figure 1). Figure 1 Step2: If it is necessary to dismantle Loader or Front Panel, the Front door should be removed first. (Figure 2) Note: Make sure

17、 to operate gently otherwise the guider would be damaged. Figure 2 2-1 Please kindly note that dismantle the front door assembly carefully to avoid damage tray and the front door. Detailed information please refer to the model set. Mechanical and Dismantling Instructions Dismantling Instruction Step

18、3: If the tray cant open in normal way, you can make it through the instruction as below (Figure 3). Note: Make sure to operate gently otherwise the guider would be damaged. Figure 3 Step4: Dismantling Front Panel, need release 2 snaps of Front Panel & 2 snaps out from the set. (Figure 4) Figure 4 2

19、-2 Detailed information please refer to the model set. of bottom cabinet , then gently pull the Panel 2-3 Mechanical and Dismantling Instructions Dismantling Instruction Figure 5 Detailed information please refer to the model set. Step6: Dismantling Power & Front Control Board, remove 3 screws on th

20、e board. (Figure 5) Step7: Dismantling Main Board.Remove 1 screw on the board. (Figure 5) Step5: Dismantling Loader, disconnect the 3 connectors (XP5, XP8, XP9) aiming in the below figure, and remove 1 screw that connects the loader and the bottom cabinet. (Figure 5) XP5 XP9 XP8 XP3 Software upgrade

21、 Preparation to upgrade software 1) Start the CD Burning software and create a new CD project (Data Disc) with the following setting: B. Read out the software versions to confirm upgrading Label: DVP2XXX (No need the label name) File Name: DVPXXXX_XX.BIN 1) Power on the set and press button on the P

22、ower on the set and open the tray, then press remote control. to check the File Name. 2) Press button. The software version and other information are display Note: It is required capital letter for the File System on the TV screen as follows: name. Version XX.XX.XX.XX (Main version) 2) Burn the data

23、 onto a blank CDR SUB-VER XX.XX.XX.XX (software version of application software) A. Procedure for software upgrade: 8032 XX.XX.XX.XX 1) Power on the set and insert the prepared Upgrade Servo XX.XX.XX.XX (software version of servo) CDR. RIS XX.XX.XX.XX 2) The set will starts reading disc & response w

24、ith the DSP XX.XX.XX.XX following display TV screen: Region Code X Upgrade File DETECTED Upgrade? Press Play TO START. 3) Press button to confirm, then screen will display : Files coping Caution: The set must not be power off during UPGRADING upgrading, Otherwise the Main board will be 4) The upgrad

25、ed tray will automatically open when files damaged entirely. coping complete, then take out the disc. 5) About 1 minute later, the trace will automatically close when upgrading complete. 3-1 4-1 Spindle motor does not move Yes No No Yes Check whether “M5V” (+5V) voltage is normal. Correct connection

26、 Check the M5V power supply Check/ Replace U1 Check/Replace the loader,or the bad part. Yes No Go Check the FFC connection between 24PIN and the loader. 1.Whether the R12 is eroded or badly soldered. 2.Whether peripheral components between U1 and xp5 are eroded or badly soldered. Trouble shooting ch

27、art Motor no move 4-2 The power can not be on or off Go Yes Yes No No The power cant be on or off Yes Repair the power board Check the power supply on the power board is normal. Check/Correct connection Whether the connection to K1 is broken. Correct the connection Replace U1. No No Yes Yes Check if

28、 the XS2 on the front board to XP1on the decoder board is in good Whether there is 0V and 5V voltage difference on Pin 56 of U1. Trouble shooting chart 4-3 All output voltages on the power board is 0V or deviated. No No No Yes No U501(PIN 4 - Drain waveform) Replace F501 Replace C501&C502 if D501, D

29、502, D503, D504 are normal. Check/ replace U501. Check whether U501 are eroded. All output voltages on the power board is 0V or deviated Check whetherthere is 300V on C501 or C502. Check whether 100KHz oscillating signal on Pin4 of U501 Check if +5V short. Check whether the components in the short-c

30、ircuit voltage are defected or eroded. Yes Yes Yes Yes Trouble shooting chart Check whether F501 is blown 4-4 Disc cannot be read. No Yes No Yes No Yes Yes No No Yes Disc cannot be read. Check the loaded circuit Replace the Loader Check the FFC connection between 24P and the loader. Check U1 and per

31、ipheral components Replace the defective parts Check the connection between U1 Correct connection Replace U1 Yes Check whether the current of R12 is Less than 60mA for DVD and 65mA for CD. Check if there is RFO signal on pin17 of XP5. (The normal RFO signal is a clear reticulated wave) Check whether

32、 the components between of U1 ,and xp5are eroded or defect Trouble shooting chart 4-5 Only DVD discor only disc except DVD can be played No No Yes Only DVD disc, or only disc except DVD can be Played. Check the FFC connection between 24pin and the loader. Check the loaded circuit Replace loader Repl

33、ace the bad spare parts Replace the bad xp5 Check whether the connection of xp5 are eroded or defect Yes Yes Yes Go Change U1 No Check whether the current of R12 is Less than 60mA for DVD and 65mA for CD. No Check whether thecomponents between U1 and xp5are eroded or defect Trouble shooting chart 4-

34、6 No display on LED, and buttons do not work No No No Yes Yes No display on LED, and buttons do not work Check whether there is correct contact between XS2 and XP1 Correct connection Fix power supply board top a power supply for should electric circuit Check the U1s pin 51,52,53arrive the XP1connect

35、 condition Correct connection PressXP1 or replace LED Yes Yes Yes No Check VCC(M5V) voltage on the power and front board Check there are STB, SDA and SCK signals on XS2 on the front board. 1.Check whether bad solder exists on pins of LED, 2.Checkwhether the circuit connected to K1, K2 and K3 is brok

36、en, 3.Check whether R303, R304,R305 on front board are open-circuit. Trouble shooting chart XP1 (PIN 2 CLK) XP1(PIN4 DOUT) 4-7 Distorted audio and loud noise No Yes No Yes Yes No No Distorted audio and loud noise ReplaceR133 Check Q753 ReplaceR132 Check whether the muting resistance R133 is normal Y

37、es Check whether the muting resistance R132 is normal Checking the U927 leads the feet has no to break to open Correct connection Replace R134 Check the voltage on pin7 of U927 is OK. Check whether the U1 or U927 powersupply normal No Yes Checkthe power supply voltages +5V to the operation amplifyin

38、g Q753 is normal. Yes Check U927 Replace U1 or U927 No Yes Trouble shooting chart 4-8 Abnormal color of video picture Yes Abnormal color of video picture Check whether the 3.3V and 1.2V power supply voltages on the decoder board are normal. Check X3, R79,R6 ,C26 and C27 Check other of power supply e

39、lectric circuit Correct the connection Check whether the video filter network circuit is normal. Yes Yes No No No Check whether the 27MHz output signal normal. Trouble shooting chart change U1 Yes No Check if the video signals on Pin 76/78/79/80 of U1 are normal 4-9 Remote reception is insensitive o

40、r fails. No Remote reception is insensitive or fails. Check if the remote control works properly. Check battery Check R96、C93 Use an oscilloscope to check if there is output waveform from the first pin IR of the remote censor after pressingbutton on the remote control. REM1(PIN1 - RCwaveform) Check

41、if there isIR signal on pin 54 of U1 Check if the power supply voltage to the remote censor is normal Go No No No Yes Yes Yes Correct connection Yes Change U1 IRwaveform Trouble shooting chart 4-10 No video picture, no sound. Change C65,R20,U1 No video picture, no sound. Check if the reset circuit c

42、onsisting ofC65 normal (at a low level for tens of milliseconds, then constantly at 3.3V). Check the cable if that is used to connect TV and DVD Player, is normal Check the power board Crystal oscillator X3 and peripheral components are defected or eroded. No No No Yes Yes Trouble shooting chart Che

43、ck whether all the voltages from the power board to the decoder board are normal. Replace the cable Yes Check if the component of vidio output circuit. Change the bad component Check if there is 27MHz signal output in No Yes No Check U1 and Replace U1 Yes 16M? FLASH (1606) 14 14PIN*2.0 POWER SUPPLY

44、24 1 2 1 MAIN BOARD 1 1 6 TDL-5 LODER 2PIN*2.0 6PIN*2.024PIN*0.5 XP1 XP9XP8XP5 1389W AUDIO/VIDEO AMP&LPF 1389W 2CH+CVBS 14 1 XS301 14PIN*2.0 Front panel 4PIN*2.0 P1 RCOAX LCVBS SP- SP+ HOMESW SL- SL+ GND OUTSW GND USB+LED Light VCC_USB GND USB_DP USB_DM CLK STB DATA GND +5V IR Power_kO MIC +12V GND

45、Wiring and Block Diagram for DVP2851: 5-15-1 5 5 4 4 3 3 2 2 1 1 DD CC BB AA THE PARTS MARKED WITH ARE IMPORTANT PARTS ON THE SAFETY. PLEASE USE THE PARTS HAVING THE DESIGNATED PARTS NUMBER WITHOUT FAIL. * CAUTION : AC INPUT HV: ? GND: HV2HV1 GND2GND1 +5V GND_POWER HV2 GND2GND1 HV1 GND_POWER +5V U501 TNY176DG U501 TNY176DG S 8 EN/UV 1 S 5 S 6 Drain 4 S 7 NC 3 BP/M 2 D508 FR104/1A/400V D508 FR104/1A/400V R502 150K R502 150K D504 1N4007/1A/1000V D504 1N4007/1A/1000V + 10uF/400V C501 + 10uF/400V C501 + 10uF/50V C509 + 10uF/50V C509 + 1500uF/16V C507 + 1500uF/16V C507 R503 150K R503 150K + 10u