Philips-HTB-7255-D-Service-Manual电路原理图.pdf

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1、1 - 1HTB7250D_HTB7255D/12Copyright 2013Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll rights reserved. No part of this publication may be reproduced, stored in a retrieval system ortransmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwisewithout th

2、e prior permission of Philips.Published by SL_HF1305 Service Audio Printed in The Netherlands Subject to modificationBD Home Theater SystemVersion 1.1TABLE OF CONTENTSLocation of PCB Boards . 1-2Versions Variation . 1-2Measurement Setup . 1-6Specifications . 1-3Service Aids . 1-7ESD fr Reparaturen s

3、ind Original-Ersatzteile zu verwenden.Sicherheitsbauteile sind durch das Symbol!markiert.ILe norme di sicurezza esigono che lapparecchio venga rimessonelle condizioni originali e che siano utilizzati i pezzi di ricambioidentici a quelli specificati.Componenty di sicurezza sono marcati con!.GBAfter s

4、ervicing and before returning set to customer perform a leakagecurrent measurement test from all exposed metal parts to earth groundto assure no shock hazard exist, The leakage current must notexceed 0.5mA.CLASS 1LASER PRODUCT3122 110 03420GB Warning !Invisible laser radiation when open.Avoid direct

5、 exposure to beam.S Varning !Osynlig laserstrlning nr apparaten r ppnad och sprrenr urkopplad. Betrakta ej strlen.SF Varoitus !Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiinankymttmlle laseristeilylle. l katso steeseen!GB WARNINGAll ICs and many other semi-conductors aresusceptible

6、 to electrostatic discharges (ESD).Careless handling during repair can reduce lifedrastically.When repairing, make sure that you areconnected with the same potential as the massof the set via a wrist wrap with resistance.Keep components and tools also at thispotential.FATTENTIONTous les IC et beauco

7、up dautressemi-conducteurs sont sensibles auxdcharges statiques (ESD).Leur longvit pourrait tre considrablementcourte par le fait quaucune prcaution nestprise leur manipulation.Lors de rparations, sassurer de bien tre reliau mme potentiel que la masse de lappareil etenfiler le bracelet serti dune rs

8、istance descurit.Veiller ce que les composants ainsi que lesoutils que lon utilise soient galement cepotentiel.ESDD WARNUNGAlle ICs und viele andere Halbleiter sindempfindlich gegenber elektrostatischenEntladungen (ESD).Unsorgfltige Behandlung im Reparaturfall kandie Lebensdauer drastisch reduzieren

9、.Veranlassen Sie, dass Sie im Reparaturfall berein Pulsarmband mit Widerstand verbundensind mit dem gleichen Potential wie die Massedes Gertes.Bauteile und Hilfsmittel auch auf dieses gleichePotential halten.DK Advarse !Usynlig laserstrling ved bning nr sikkerhedsafbrydere erude af funktion. Undg ud

10、saettelse for strling.F“Pour votre scurit, ces documents doivent tre utiliss pardes spcialistes agrs, seuls habilits rparer votreappareil en panne“.GBESD PROTECTION EQUIPMENTComplete Kit ESD3 (small tablemat, wristband,connection box, estention cable and earth cable . 4822 310 10671Wristband tester

11、. 4822 344 139991 - 9Pb(Lead) Free SolderWhen soldering , be sure to use the pb free solder.INDENTIFICATION:Regardless of special logo (not always indicated)onemusttreatallsetsfrom1 Jan2005onwards,accordingnext rules:Important note: In fact also products of year 2004 mustbe treated in this way as lo

12、ng as you avoid mixing solder-alloys (leaded/ lead-free). So best to always use SAC305and the higher temperatures belong to this.Due to lead-free technology some rules have to berespected by the workshop during a repair: Use only lead-free solder alloy Philips SAC305 withorder code 0622 149 00106. I

13、f lead-free solder-pasteis required, please contact the manufacturer of yoursolder-equipment. In general use of solder-pastewithin workshops should be avoided because paste isnot easy to store and to handle. Use only adequate solder tools applicable for lead-free solder alloy. The solder tool must b

14、e able To reach at least a solder-temperature of 400C, To stabilize the adjusted temperature at the solder-tip To exchange solder-tips for different applications. Adjust your solder tool so that a temperature around360C 380C is reached and stabilized at the solderjoint.Heating-timeofthesolder-joints

15、hould notexceed 4 sec. Avoid temperatures above 400C otherwisewear-out of tips will rise drastically and flux-fluid willbe destroyed. To avoid wear-out of tips switch off un-used equipment, or reduce heat. Mix of lead-free solder alloy / parts with leaded solderalloy / parts is possible but PHILIPS

16、recommendsstrongly to avoid mixed solder alloy types (leaded andlead-free).If one cannot avoid or does not know whether productis lead-free, clean carefully the solder-joint from oldsolder alloy and re-solder with new solder alloy(SAC305). Use only original spare-parts listed in the Service-Manuals.

17、 Not listed standard-material (commodities)has to be purchased at external companies. Special information for BGA-ICs: Always use the 12nc-recognizable solderingtemperature profile of the specific BGA (for de-solderingalwaysuse thelead-free temperatureprofile,in case of doubt) Lead free BGA-ICs will

18、 be delivered in so-called dry-packaging (sealed pack including a silica gel pack) toprotect the IC against moisture. After opening,dependent of MSL-level seen on indicator-label in thebag, the BGA-IC possibly still has to be baked dry.(MSL=Moisture Sensitivity Level). This will becommunicated via A

19、YS-website.Do not re-use BGAs at all. For sets produced before 1.1.2005 (except productsof 2004), containing leaded solder-alloy andcomponents, all needed spare-parts will be availabletill the end of the service-period. For repair of suchsets nothing changes. On our website www.atyourservice.ce.Pyou

20、 find more information to:BGA-de-/soldering (+ baking instructions)Heating-profiles of BGAs and other ICs used inPhilips-setsYou will find this and more technical informationwithin the “magazine”, chapter “workshop news”.For additional questions please contact your localrepair-helpdesk.2 - 12 - 1Sof

21、tware upgrade & Procedure to restore product setting1)Restore factory settinga) Press “ ” button on R/C.b) Select , then press “OK” button on R/C.c) Select .d) Select ,then press to confirm.2)Password change a) Press “ ” button on R/C.b) Select , then press “OK” button on R/C.c) Select .d) Select ,

22、then press button on R/C.“0000” is default password supplied.3)Trade modea) In open model,press “ ” button on R/C.b) Press “2” “5” “9” on R/C,VFD will display “TRA ON” or “TRA OFF”.4)Check software versiona) Press “ ” button on R/Cb) Select , then press button on R/C.c) Select ,then press button on

23、R/C.d) TV will show message as follow:Model:HTB7250D/12VersionsSystem SW:X.XX.XXXSubsystem SW:XX-XX-XX-XX Wireless(Wi-Fi):XX:XX:XX:XX:XX:XXExtended unique Identifier(EUI64):0025d1fffeof3c15PRODUCT ID:A5UDJSCREQVGSCG5For information,frequently asked questions andsoftware updates,please press button

24、to exit .5) Upgrading new softwareMethod 1: Update software from a USB storage devicea) Create a folder named “UPG” in your USB storage device, and Copy the latest upgrading software into the folder.b) Connect the USB storage device to the home theater.c) Press “ ” button on R/C, and select .d) Sele

25、ct .e)Follow the onscreen instructions to confirm the update. Update process takes about 5 minutes to complete. Once complete, the home theater automatically switches off and restarts.If it does not, disconnect the powercord for a few seconds and then reconnect it.Method 2: Update software from the

26、internetNote: To check for new updates, compare the current softwareversion of your home theater with the latest software version (ifavailable) on the Philips web site, and for BD-Live application andsoftware update, make sure that the network router has access tothe Internet and the firewall is dis

27、abled.a) The “LAN” jack at the back panel of the set must be connect tothe network router via network cable and the set connect to TV,Prepare the connection as shown follow:b) Press “ ” button on R/C, and select .c) Select . If an upgrade media is detected, you are prompted to start or cancel the up

28、date. Downloading of the upgrading file maytake long, depending on your home network condition.5 Follow the onscreen instructions to confirm the update. Update process takes about 5 minutes to complete. Once complete, the home theater automatically switches off and restarts.If it does not, disconnec

29、t the powercord for a few seconds and then reconnect it.wwwLAN/NIIMDHCRAIMDHBottom side view of OPU CAUTION!This information is confi dential and may not be distributed.Only a qualifi ed service person should reprogram the Region Code.c) Assembly Blu-ray Loader to “J800”,”J900”,”J901” on the top of

30、BD Board as shown below.d) Remove soldered joint on the ESD protection points. Note: The ESD protection points must be soldered ifo the Blu-ray Loader is OK and needs to be disconnected from connector J800, J900 and J901 of the BD Board.o the defective Blu-ray Loader is needed to be send back to sup

31、plier for failure analysis and to support backcharging evidence.Figure 1 7) Update the onscreen helpIf the current version of the onscreen help is lower than the latest version available on download and install the latest onscreen help.* A USB flash drive that is FAT or NTFS formatted, with at leas

32、t 35MB of memory. Do not use a USB hard drive.* A computer with internet access.* An archive utility that supports the ZIP file formata) Connect a USB flash drive to your computer.b) In your web browser, go to At the philips support website, find your product and click on User manuals, and then loc

33、ate the User Manual Upgrade Software. (The help update is available as a zip file).d) Save the zip file in the root directory of your USB flash drive.e) Use the archive utility to extract the help update file in the root directory. (A file named “HTSXXXXeDFU.zip” is extracted under the UPG folder of

34、 your USB flash drive, “xxxx” being the model number of your home theater.)f) Disconnect the USB flash drive from your computer.Caution: Do not switch off the home theater or remove the USB flash dirve during the update.g) Connect the USB flash drive containing the downloaded file to your home theat

35、er. (Make sure that no disc is loaded inside the disc compartment)h) Press “ ” button on R/C.i) Enter 338 on the remote control.j) Follow the onscreen instructions to confirm the update.k) Disconnect the USB flash drive from the home theater.6)How to replace the defective Blu-ray Loadera) Remove the defective Blu-ray Loader.b) Remove the shield cover at the top of Blu-ray Loader as shown below:i) Loosen 5 screws on the top of Blu-ray Loader as shown in figure1AJ900 J901 J800The ESD Protection points on the top of board