Philips-DVP-3800-X-Mk2-Service-Manual(1) 电路图 维修手册.pdf
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1、 TABLE OF CONTENTS Page Version 1.4 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 LLL - 1202BU AVM Printed in The Netherlands Subject to modification 3141 785 36984 DVP3800(X) DVP3800/55 This service manual is for DVP3800 second generation model, wh
3、ich is different from the first generation DVP3800 model. For second generation model, the serial number begins with KX 2Axxxxxxxxxx Specification.1-2 Safety Instruction,Warning 60mA for DVD), 2.Whether peripheral components between U1 and xp5 are eroded or badly soldered. Trouble shooting chart Mot
4、or 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 K303 is broken. Correct the connection Replace U1. No No Yes Yes Check if the
5、XS301 on the front board to XP80 on the decoder board is in good contact. Whether there is 0V and 3.3V voltage difference on Pin 56 DV_STBY of U1. Trouble shooting chart 4-3 All output voltages on the power board is 0V or deviated. No No No Yes No U1(PIN 4 - Drain waveform) Replace F501 Replace C501
6、&C502 if D501, D502, D503, D504 are normal. Check/ replace U1. Check whether U1 are eroded. All output voltages on the power board is 0V or deviated Check whether there is 300V on C501 or C502. Check whether 100KHz oscillating signal on Pin4 of U1 Check if +5V and +12V are short. Check whether the c
7、omponents in the short-circuit voltage are defected or eroded. Yes Yes Yes Yes Trouble shooting chart 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 connecti
8、on between 24P and the loader. Check U1 and peripheral 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 XP2. (The normal RFO si
9、gnal is a clear reticulated wave) Trouble shooting chart Check whether the components between of U1 ,and xp5 are eroded or defect 4-5 Only DVD disc or 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 loa
10、der. Check the loaded circuit Replace loader Replace 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 the components between U1 and
11、 xp5 are eroded or defect 4-6 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 XS301 and XP80 Correct connection Fix power supply board top a power supply for should electric circuit Check the U1s pi
12、n 51,52,53 arrive the XP80 connect condition Correct connection Replace U301 or LED Yes Yes Yes No Check VCC(M5V) voltage on the power and front board Check there are STB, SDA and SCK signals on XS301 on the front board. 1.Check whether bad solder exists on U301 and pins of LED, 2.Check whether the
13、circuit connected to K302, K303 and K301 is broken, 3.Check whether R1, R3 on front board and R131,R132 and R138 on MEPG board are open-circuit. Trouble shooting chart XP80 (PIN 4 CLK) XP80 (PIN6 DOUT) 4-7 Distorted audio and loud noise No Yes No Yes Yes No No Distorted audio and loud noise Replace
14、R369,R375 Check Q544 Replace Q361,Q362 Check whether the muting resistance R369,R375 are normal Yes Check whether the muting transistor Q361,Q362 are normal Checking the U361 leads the feet has no to break to open Correct connection Replace R361,R362 Check the voltage on pin3 or pin5 of U361 is OK.
15、(Should be 2.53.1V) Check whether the U1 or U361 powersupply normal No Yes Check the power supply voltages M5V to the operation amplifying Q544 is normal. Yes Check U361 Replace U1 or U361 No Yes Trouble shooting chart 4-8 Abnormal color of video picture Yes Abnormal color of video picture Check whe
16、ther the 3.3V and 1.2V power supply voltages on the decoder board are normal. Check Y1, R79,R6 ,C26 and C27 Check other of power supply electric 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. Tro
17、uble 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 or fails. No Remote reception is insensitive or fails. Check if the remote control works properly. Check battery Check R315、C315 Use an oscilloscope to check if the
18、re is output waveform from the first pin IR of the remote censor after pressing button on the remote control. REM301(PIN1 - RC waveform) Check if there is IR 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
19、U1 IR waveform Trouble shooting chart 4-10 No video picture, no sound. Change C65,U1 No video picture, no sound. Check if the reset circuit consisting 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 nor
20、mal Check the power board Crystal oscillator Y1 and peripheral components are defected or eroded. No No No Yes Yes Trouble shooting chart Check 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
21、the bad component Check if there is 27MHz signal output in No Yes No Check U1 and Replace U1 Yes 5 5 4 4 3 3 2 2 1 1 DD CC BB AA 16M? FLASH (1606) 8 8PIN*2.0 POWER SUPPLY 24 1 2 1 1 5 MAIN BOARD 1 1 6 TDL-5 LODER 2PIN*2.0 6PIN*2.0 5PIN*2.5 24PIN*0.5 5PIN*2.5 XP1 CON503 XP82 XP9XP8XP5 P441 1 5 1389W
22、AUDIO AMP&LPF 1389W 2CH+YUV 81 XS301 11PIN*2.0 Front panel 4PIN*2.0 P1RCOAX L VIDEO LPF CVBS YPr Pb +5V USB_DP USB_DM GND GND +12V GND M5V M5V SP- SP+ HOMESW SL- SL+ GND OUTSW GND IOA VSDA SD_D0 / GPIO3368 UART_RXD1 UART_TXD1 GPIO29 GPIO32 GPIO12 63 64 66 VR_DVD Name VR_CD PIN GPIO8 GPIO11 GPIO13 GP
23、IO6 GPIO20 PAD_FG GPI36 UP1_7 5 6 99 98 36 52 53 51 58 59 Features VR_DVD 60 69 GPIO7 40 41 61 62 TROUT TRIN ASPDIF POWER_KEY AKIN1 VR_CD LIMIT GPIOA UP1_6 83 82 VSCK MS_CLK KEY_IN2 GPIO3 70 56 73 71 AUDIO_MUTEGPIO14 KEY_IN1 SCART1 SCART2 VSTB MT1389W General GPIO List Gxyz_CLK MS_BS MS_D0 SD_CLK SD
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