Philips-HTS-3440-Service-Manual电路原理图.pdf

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1、Published by HY-TE0623 AV Systems Printed in the Netherlands Subject to modication EN 3139 785 31880HTS3440/37DVD ReceiverCLASS 1LASER PRODUCT1 Technical Specications and ConnectionFacilities 22 Measurements Setup, Service Aid fr Reparaturen sind Original-Ersatzteile zu verwenden.Sicherheitsbauteile

2、 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 servicing and before returning set to customer perform a

3、leakagecurrent measurement test from all exposed metal parts to earth ground toassure no shock hazard exist. The leakage current must not exceed0.5mA.EN 73139 785 31880Measurements Setup, Service Aid & Lead Free Requirements 2.2.1 Lead Free RequirementsPb(Lead) Free SolderWhen soldering , be sure to

4、 use the pb free solder.INDENTIFICATION:Regardless of special logo (not always indicated) one must treat all sets from 1 Jan 2005 onwards, according next rules:Important note: In fact also products of year 2004 must be treated in this way as long as you avoid mixing solder-alloys (leaded/ lead-free)

5、. So best to always use SAC305 and the higher temperatures belong to this.Due to lead-free technology some rules have to be respected by the workshop during a repair: Use only lead-free solder alloy Philips SAC305 with order code 0622 149 00106. If lead-free solder-paste is required, please contact

6、the manufacturer of your solder-equipment. In general use of solder-paste within workshops should be avoided because paste is not easy to store and to handle. Use only adequate solder tools applicable for lead-free solder alloy. The solder tool must be able o To reach at least a solder-temperature o

7、f 400C, o To stabilize the adjusted temperature at the solder-tip o To exchange solder-tips for different applications. Adjust your solder tool so that a temperature around 360C 380C is reached and stabilized at the solder joint. Heating-time of the solder-joint should not exceed 4 sec. Avoid temper

8、atures above 400C otherwise wear-out of tips will rise drastically and ux-uid will be destroyed. To avoid wear-out of tips switch off un-used equipment, or reduce heat. Mix of lead-free solder alloy / parts with leaded solder alloy / parts is possible but PHILIPS recommends strongly to avoid mixed s

9、older alloy types (leaded and lead-free). If one cannot avoid or does not know whether product is lead-free, clean carefully the solder-joint from old solder alloy and re-solder with new solder alloy (SAC305). Use only original spare-parts listed in the Service-Manuals. Not listed standard-material

10、(commodities) has to be purchased at external companies. Special information for BGA-ICs: - always use the 12nc-recognizable soldering temperature prole of the specic BGA (for de-soldering always use the lead-free temperature prole, in case of doubt) - lead free BGA-ICs will be delivered in so-calle

11、d dry-packaging (sealed pack including a silica gel pack) to protect the IC against moisture. After opening, dependent of MSL-level seen on indicator-label in the bag, the BGA-IC possibly still has to be baked dry. (MSL=Moisture Sensitivity Level). This will be communicated via AYS-website.Do not re

12、-use BGAs at all. For sets produced before 1.1.2005 (except products of 2004), containing leaded solder-alloy and components, all needed spare-parts will be available till the end of the service-period. For repair of such sets nothing changes. On our website www.atyourservice.ce.P you nd more inform

13、ation to: BGA-de-/soldering (+ baking instructions) Heating-proles of BGAs and other ICs used in Philips-setsYou will nd this and more technical information within the “magazine”, chapter “workshop news”.For additional questions please contact your local repair-helpdesk.EN 8 3139 785 318802. Measure

14、ments Setup, Service Aid & Lead Free Requirements2.2 Service HintsCAUTIONCHARGED CAPACITORS ON THE SERVO BOARD MAY DAMAGE THE DRIVE ELECTRONICS WHEN CONNECTING A NEW DRIVE.THATS WHY, BESIDES THE SAFETY MEASURES LIKE SWITCH OFF POWER SUPPLY ESD PROTECTIONADDITIONAL ACTIONS MUST BE TAKEN BY THE REPAIR

15、 TECHNICIAN.The following steps have to be done when replacing the defective loader :1. Dismantling of the loader to access the ESD protection point if necessary.2. Solder the ESD protection point*. 3. Disconnect exfoil cable from the defective loader.4. Put a paper clip on the exfoil to short-circu

16、it the contacts (g.1) 5. Replace the defective loader with a new loader.6. Remove paperclip from the exfoil and connect it to the new loader.7. Remove solder joint on the ESD protection point.ATTENTION: The laser diode of this loader is protected against ESD by a solder joint which shortcircuits the

17、 laserdiode to ground. For proper functionality of the loader this solder joint must be remove after connection loader to the set.Type 1 Type 2(ESD protection point is accessible from top of loader) (ESD protection point is accessible from bottom of the loader)*Only applicable for defective loader n

18、eeded to be sent back to supplier for failure analysis and to support backcharging evidence.This is also applicable for all partnership workshops.EN 93139 785 31880Directions for Use 3. 3. Directions For UseThe following except of the Quick Use Guide serves as an introduction to the set.The Complete Direction for the Use can be downloaded in different languages from the internet site of Philips Customer care Center: EN 10 3139 785 318803. Directions for Use