Philips-DVD-520-H-Service-Manual(1) 电路图 维修手册.pdf
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1、 Service Manual Service ServiceService ServiceService DVDR520H/00/02/04/05/37/69/75/93/97 Copyright 2004 Philips Consumer Electronics B.V. Eindhoven, The Netherlands All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any
2、 means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips. Published by LO-MF AV SystemPrinted in The NetherlandsSubject to modification GB3139 785 30853 HDD / DVD Recorder Combi Version 1.3 RadioFans.CN 收音机爱 好者资料库 CONTENTS 1.Specifications.1-1 2.Product Vali
3、dation Strategies and Process 2.1 System Block Diagram .2-1 2.3 Front Panel .2-2 2.4 Rear Panel.2-2 3.Fault Finding Tree one with Power on and one after Power on, when the DVD starts up. 1.2 If the unit takes a long time to complete the power-on process, check IDE cable (or 4 IDE connector: connecti
4、ng between Loader if still not work, ? Replace/change another new DVD writer ( Loader ) if still not work,. ? Replace/change another new HDD; 3-9 2 No Display On LED Module 2.1 Put a paper in between the M/B and the barebone, for preventing the M/B shortcut with ground and Re-test again. 2.2 To chec
5、k the connector between main board and power module had been assembled / connected properly. (Fan on rear panel should rotate continuously) if there Is no power supplying to main board ( Yellow: +12V Red: +5V measured with universal voltage meter ), replace / change another new Power Module. 2.3 Che
6、ck the FFC (18 pin) cable between main board and display board had been assembled connected well. 2.4 Short the JP8 (on the main board) with jumper, and then, plug with power cord to check if the text on the LED module had been lighted on. (Test mode of Display Board had been activated). In case the
7、 answer is negative, replace / change another new Display Board. 2.5 Replace / change another new Main Board. (There should be something wrong with IC component: AT89S52, DMN-8652 .) 3-10 3 Loader (DVD writer) Failure 3.1 Tray cant open 3.1.1 Disassemble the Loader, and press the eject button on the
8、 Loader (with power supply connected : 4 pin connector) to check whether the tray can open or not. Re-assembly DVD writer (Loader), pay attention to assembly issue (Plastic layer of Loader stuck to front) and the position of IDE cable (40 pin; flat cable). 3.1.2 Check the FFC (18 pin) cable between
9、main board and display board had been assembled / connected well. 3.2 Not ready ( Loader cant identify / recognize the disc ) 3.2.1 In this case update the loader firmware to latest version. Please select several kind of DVD and CD discs including 8x and 4x DVD+R/RW, and test if loader can both play
10、back and record on the disc. 1. If yes, then this maybe a media compatibilities issue. The firmware update can solve it. 2. If can not playback or record at all, change another new loader. 3. If just cant record on some disc, wait for a new firmware release or change another new loader. 3.3 Copy/Rec
11、ording failure or Mosaic appeared 1. Check if the recorded disc is dirty or scratch. If yes, try another disc to check again. 2. If no, update loader to latest and check it again. 3. If it still cant work, Replace/change another new loader and check it again. 4. If it still cant work, Replace/change
12、 another new Main-board and check it again. 4 Update FirmWare 4.1 Tray cant open 4.1.1 Re-assembly DVD writer (Loader), pay attention to assembly issue ( Plastic layer of Loader stuck to front ) and the position of IDE cable ( 40 pin; flat cable ). 4.1.2 Check the FFC (18 pin) cable between main boa
13、rd and display board had been assembled / connected well. 4.1.3 Disassemble the Loader, and press the eject key on the Loader (with power supply connected : 4 pin connector) to check whether the tray can open or not. If the answer is negative, Replace / change another 3-11 new Loader. 4.1.4 After th
14、at, tray still cant open. Replace / change another new Main Board. 4.2 Put in CD 4.2.1 Put the update disc on the tray and pressing open/close key to make the tray close, system would update firmware automatically. This may take a while, wait for the loader to read the firmware update. When “error”
15、on panel replace Mainboard 4.2.2 In case the tray still eject in a few seconds later, Replace/change another new Main Board. 4.3 especially case (Firmware updating fail ) 4.3.1 Open the tray and put in the firmware disc, tray in and wait the disc ready after A-up (AP upgrade) ,start to upgrade the l
16、oader, if finished it will show “done” in LCD panel. 4.3.2 In case d-up (loader upgrade) to 99% then show “error “, 1. Please wait tray-out and remove the update disc ( please note dont turn off the power immediately , please wait about 70 seconds) . 2. Press the power key to power off , then restar
17、t the power on again .The set will show put in CD then put in update disc and update again. 3. If still fail , change the loader. 5 TV (Tuner Function) Failure 5.1 Make sure that the Tuner Board had been assembled on Main Board at the right (pin) position and that it is clicked in. Also check the ca
18、pacitor 470uF on the Tuner Board must be shorted and is still intact .Look if the pins of the tuner are still straight and are placed in the right place 5.2 If the answer of former step is positive and all is assembled correctly, Replace another new Tuner Board. 5.3 In case the tuner (TV) function s
19、till had not worked, Replace/change another new Main Board. 470uF 3-12 6 Erasing ( HDD ) Failure 6.1 First confirm that it is a HDD Failure by using the Timer ( If it recognizes the HDD ) and Erase Function ( Format the HDD ). See Picture below 6.2 Check if the voltage of connector which connected t
20、o HDD is correct or not.( Yellow: +12V Red: +5V).If no, change the power module. See picture below. 6.3 If failed, check IDE cable/connector (40 pin) of HDD device whether assembly / connecting properly or not. 6.4 If not, connect it well and try again 6.5 If yes, remove the HDD from the set and con
21、nect it to a PC to check if the PC can recognize it or not. (Seagate screen test)! 6.6 If the PC can recognize it ,the format it on the PC and put it back to the set, then excute erase function again. 6.7 If not, replace / change another new HDD. 6.8 If still Failed try replacing the Main Board. 3-1
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