LG-HDR899-hdd-sm 维修电路原理图.pdf

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1、DVB-T/HDD/DVD RECORDERSERVICE MANUALMODELS : HDR899/1000CAUTIONBEFORE SERVICING THE UNIT, READ THE “SAFETYPRECAUTIONS”IN THIS MANUAL.MODELS : HDR899/1000SERVICE MANUALWebsite http:/Internal Use OnlyRadioFans.CN 收音机爱 好者资料库Copyright 2008 LG Electronics. Inc. All right reserved.Only for training and se

2、rvice purposesLGE Internal Use OnlyCONTENTSSECTION 1.SUMMARYSECTION 2.CABINET & MAIN CHASSISSECTION 3.ELECTRICALSECTION 4.RS-06A LOADER PARTSECTION 5.REPLACEMENT PARTS LISTRadioFans.CN 收音机爱 好者资料库1-2Copyright 2008 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Inter

3、nal Use OnlySECTION 1SUMMARYCONTENTSNEW FUNCTIONS OF HDD/DVD RECORDER.1-3PRODUCT SAFETY SERVICING GUIDELINES FOR HDD/DVD RECORDER PRODUCTS.1-4SERVICING PRECAUTIONS.1-5 GENERAL SERVICING PRECAUTIONS INSULATION CHECKING PRODEDURE ELECTROSTATICALLY SENSITIVE (ES) DEVICESSERVICE INFORMATION FOR EEPROM I

4、C SETTING.1-6UPGRADE THE MAIN & LOADER PROGRAM.1-7SPECIFICATIONS.1-81-3Copyright 2008 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use OnlyNEW FUNCTIONS OF HDD/DVD RECORDER HDMIHDMI IS THE SPECIFICATION FOR THE HIGH-DEFINITION MULTIMEDIA INTERFACE. HDMI

5、IS PROVIDEDFOR TRANSMITTING DIGITAL TELEVISION AUDIOVISUAL SIGALS FROM HDD-DVD RECODER TO TELE-VISION SETS, OTHER VIDEO DISPLAYS. HDMI CAN CARRY HIGH QUALITY MULTI-CHANNELAUDIO DATAAND CAN CARRY ALL STANDARD AND HIGH DEFINITION CONSUMER ELECTRONICS VIDEO FORMATS.CONTENT PROTECTION TECHNOLOGY IS AVAI

6、LABLE. HDMI CAN ALSO CARRY CONTROL AND STATUSINFORMATION IN BOTH DIRECTIONS.AUDIO, VIDEO AND AUXILIARY DATA IS TRANSMITTED ACROSS THE THREE TMDS DATA CHANNELS.THE VIDEO PIXEL CLOCK IS TRANSMITTED ON THE TMDS CLOCK CHANNEL AND USED BY THERECEIVER AS A FREQUENCY REFERENCE FOR DATA RECOVERY ON THE THRE

7、E TMDS DATA CHAN-NELS.VIDEO DATA IS CARRIED AS A SERIES OF 24-BIT PIXELS ON THE THREE TMDS DATA CHANNELS.TMDS ENCODING CONVERTS THE 8BIT PER CHANNEL INTO THE 10BIT DC-BALANCED.VIDEO PIXEL RATES CAN RANGE FROM 25MHz TO 165MHz. THE VIDEO PIXELS CAN BE ENCODED INEITHER RGB, YCbCr 4:4:4 OR YCbCr 4:2:2 F

8、ORAMTS. IN ALL THREE CASES, UP TP 24 BITS PER PIXELCAN BE TRANSFERRED.FAST DUBBINGDUBBING MEANS A COPYING FUNCTION BETWEEN HDD TO DVD DISCS.COPYING BETWEEN HDD TO DVD IS A COMPLETELY DIGITAL PROCESS AND THEREFORE INVOLVESNO LOSS OF QUALITY IN THE AUDIO OR VIDEO. SO THIS MEANS THAT COPYING CAN BE CAR

9、RIED OUTAT THE MAXIMUM SPEED POSSIBLE.NORMAL DUBBING : SPEED RATE MAX X1FAST DUBBING : SPEED RATE MAX X4WHEN FAST DUBBING FROM HDD TO DVD, THE SPEED OF COPYING DEPENDS ON THE RECODINGMODE AND THE KIND OF USING THE DVD DISC, AND THIS MODE IS NOTAVAILABLE FOR EDITED VIDEOTITLE IN HDD.WHEN FAST DUBBING

10、 FROM DVD TO HDD, ONLYAVAILABLE WHEN COPYING VR MODE DISC(DVD-RW)TO HDD, AND ONLY NORMAL DUBBING AVAILABLE WHEN COPYING VIDEO MODE DISC(DVD+RW/RW,DVD-R) TO HDD.1-4Copyright 2008 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use OnlyPRODUCT SAFETY SERVICIN

11、G GUIDELINES FOR HDD/DVD RECORDER PRODUCTSIMPORTANT SAFETYNOTICEThis manual was prepared for use only by properly trained audio-video service tech-nicians.When servicing this product, under no circumstances should the original design bemodified or altered without permission from LG Corporation. All

12、components shouldbe replaced only with types identical to those in the original circuit and their physicallocation, wiring and lead dress must conform to original layout upon completion ofrepairs.Special components are also used to prevent x-radiation, shock and fire hazard.These components are indi

13、cated by the letter “x” included in their component desig-nators and are required to maintain safe performance. No deviations are allowedwithout prior approval by LG Corporation.Circuit diagrams may occasionally differ from the actual circuit used. This way, imple-mentation of the latest safety and

14、performance improvement changes into the set isnot delayed until the new service literature is printed.CAUTION: Do not attempt to modify this product in any way. Never perform cus-tomized installations without manufacturers approval. Unauthorized modifications willnot only void the warranty, but may

15、 lead to property damage or user injury.Service work should be performed only after you are thoroughly familiar with thesesafety checks and servicing guidelines.GRAPHIC SYMBOLSThe exclamation point within an equilateral triangle is intended to alertthe service personnel to important safety informati

16、on in the service lit-erature.The lightning flash with arrowhead symbol within an equilateral trian-gle is intended to alert the service personnel to the presence of non-insulated “dangerous voltage” that may be of sufficient magnitude toconstitute a risk of electric shock.The pictorial representati

17、on of a fuse and its rating within an equilater-al triangle is intended to convey to the service personnel the followingfuse replacement caution notice:CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OFFIRE, REPLACE ALL FUSES WITH THE SAME TYPE AND RAT-ING AS MARKED NEAR EACH FUSE.SERVICE INFORMATIO

18、NWhile servicing, use an isolation transformer for protection from AC line shock. Afterthe original service problem has been corrected, make a check of the following:FIRE AND SHOCK HAZARD1. Be sure that all components are positioned to avoid a possibility of adjacent com-ponent shorts. This is espec

19、ially important on items trans-ported to and from therepair shop.2. Verify that all protective devices such as insulators, barriers, covers, shields, strainreliefs, power supply cords, and other hardware have been reinstalled per the orig-inal design. Be sure that the safety purpose of the polarized

20、 line plug has not beendefeated.3. Soldering must be inspected to discover possible cold solder joints, solder splash-es, or sharp solder points. Be certain to remove all loose foreign particles.4. Check for physical evidence of damage or deterioration to parts and components,for frayed leads or dam

21、aged insulation (including the AC cord), and replace if nec-essary.5. No lead or component should touch a high current device or a resistor rated at 1watt or more. Lead tension around protruding metal surfaces must be avoided.6. After reassembly of the set, always perform an AC leakage test on all e

22、xposedmetallic parts of the cabinet (the channel selector knobs, antenna terminals, han-dle and screws) to be sure that set is safe to operate without danger of electricalshock. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THISTEST. Use an AC voltmeter having 5000 ohms per volt or more sensitivity

23、 in thefollowing manner: Connect a 1500 ohm, 10 watt resistor, paralleled by a .15 mfd150V AC type capacitor between a known good earth ground water pipe, conduit,etc.) and the exposed metallic parts, one at a time. Measure the AC voltage acrossthe combination of 1500 ohm resistor and .15 mfd capaci

24、tor. Reverse the AC plugby using a non-polarized adaptor and repeat AC voltage measurements for eachexposed metallic part. Voltage measured must not exceed 0.75 volts RMS. Thiscorresponds to 0.5 milliamp AC. Any value exceeding this limit constitutes a poten-tial shock hazard and must be corrected i

25、mmediately.TIPS ON PROPER INSTALLATION1. Never install any receiver in a closed-in recess, cubbyhole, or closely fitting shelfspace over, or close to, a heat duct, or in the path of heated air flow. 2. Avoid conditions of high humidity such as: outdoor patio installations where dewis a factor, near

26、steam radiators where steam leakage is a factor, etc. 3. Avoid placement where draperies may obstruct venting. The customer should alsoavoid the use of decorative scarves or other coverings that might obstruct ventila-tion.4. Wall- and shelf-mounted installations using a commercial mounting kit must

27、 followthe factory-approved mounting instructions. Aproduct mounted to a shelf or plat-form must retain its original feet (or the equivalent thickness in spacers) to provideadequate air flow across the bottom. Bolts or screws used for fasteners must nottouch any parts or wiring. Perform leakage test

28、s on customized installations.5. Caution customers against mounting a product on a sloping shelf or in a tilted posi-tion, unless the receiver is properly secured.6. Aproduct on a roll-about cart should be stable in its mounting to the cart.Caution the customer on the hazards of trying to roll a car

29、t with small castersacross thresholds or deep pile carpets.7. Caution customers against using extension cords. Explain that a forest of exten-sions, sprouting from a single outlet, can lead to disastrous consequences tohome and family.1-5Copyright 2008 LG Electronics. Inc. All right reserved.Only fo

30、r training and service purposesLGE Internal Use OnlySERVICING PRECAUTIONSCAUTION: Before servicing the HDD / DVD RECORDER cov-ered by this service data and its supplements and addends,read and follow the SAFETY PRECAUTIONS. NOTE: ifunforeseen circumstances create conflict between the follow-ing serv

31、icing precautions and any of the safety precautions inthis publications, always follow the safety precautions.Remember Safety First :General Servicing Precautions1.Always unplug the HDD / DVD RECORDER AC power cordfrom the AC power source before:(1) Removing or reinstalling any component, circuit bo

32、ard,module, or any other assembly.(2) Disconnecting or reconnecting any internal electricalplug or other electrical connection.(3) Connecting a test substitute in parallel with an electrolyt-ic capacitor.Caution : A wrong part substitution or incorrect polarityinstallation of electrolytic capacitors

33、 may result in anexplosion hazard.2.Do not spray chemicals on or near this HDD / DVDRECORDER or any of its assemblies.3.Unless specified otherwise in this service data, clean elec-trical contacts by applying an appropriate contact cleaningsolution to the contacts with a pipe cleaner, cotton-tippedsw

34、ab, or comparable soft applicator. Unless specified otherwise in this service data, lubrication ofcontacts is not required.4.Do not defeat any plug/socket B+ voltage interlocks withwhitch instruments covered by this service manual might beequipped.5.Do not apply AC power to this HDD / DVD RECORDER a

35、nd/ or any of its electrical assemblies unless all solidstatedevice heat sinks are correctly installed.6.Always connect the test instrument ground lead to an appro-priate ground before connecting the test instrument positivelead. Always remove the test instrument ground lead last.Insulation Checking

36、 ProcedureDisconnect the attachment plug from the AC outlet and turnthe power on. Connect an insulation resistance meter (500V)to the blades of the attachment plug. The insulation resistancebetween each blade of the attachment plug and accessibleconductive parts (Note 1) should be more than 1Mohm.No

37、te 1 : Accessible Conductive Parts include Metal panels,Input terminals, Earphone jacks,etc.Electrostatically Sensitive (ES) DevicesSome semiconductor (solid state) devices can be damagedeasily by static electricity. Such components commonly arecalled Electrostatically Sensitive (ES) Devices. Exampl

38、es oftypical ES devices are integrated circuits and some field effecttransistors and semiconductor chip components.The following techniques should be used to help reduce theincidence of component damage caused by static electricity.1.Immediately before handling any semiconductor componentor semicond

39、uctor-equipped assembly, drain off any electro-static charge on your body by touching a known earthground. Alternatively, obtain and wear a commercially avail-able discharging wrist strap device, which should beremoved for potential shock reasons prior to applying powerto the unit under test.2.After

40、 removing an electrical assembly equipped with ESdevices, place the assembly on a conductive surface suchas aluminum foil, to prevent electrostatic charge buildup orexposure of the assembly.3.Use only a grounded-tip soldering iron to solder or unsolderES devices.4.Use only an anti-static solder remo

41、val device. Some solderremoval devices not classified as “anti-static” can generateelectrical charges sufficient to damage ES devices.5.Do not use freon-propelled chemicals. These can generatean electrical charge sufficient to damage ES devices.6.Do not remove a replacement ES device from its protec

42、tivepackage until immediately before you are ready to install it.(Most replacement ES devices are packaged with leadselectrically shorted together by conductive foam, aluminumfoil,or comparable conductive material).7.Immediately before removing the protective material fromthe leads of a replacement

43、ES device, touch the protectivematerial to the chassis or circuit assembly into which thedevice will be installed.Caution: Be sure no power is applied to the chassis or cir-cuit, and observe all other safety precautions.8.Minimize bodily motions when handling unpackagedreplacement ES devices. (Norma

44、lly harmless motion suchas the brushing together of your clothes fabric or the liftingof your foot from a carpeted floor can generate static elec-tricity sufficient to damage an ES device.)1-6Copyright 2008 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Us

45、e OnlySERVICE INFORMATION FOR EEPROM IC SETTING1. Please the CLEAR button on the remocon together with OPEN the Front Panel about 6 sec.The picture on OSD will be bellow ;Model : 2. To MOVE from OP! to another option. Pleasebutton on the remote control.3. To CHANGE the Option Code. Pleasebutton on t

46、he remote control.4. To APPLY the Option Code. After change the option press ENTER button on remote control.5. To INITIALIZE the system. Press CLEAR button on the remotecontrol together with OPEN on the Front panelabout 2sec.6. To exit from the Option Code menu without Initialize the system.Just tur

47、n off the power and turn on again.DiscRead TimeDVD018 Sec OKCD021 Sec NGOP1 : 0000000000M : 10.013OP2 : 0000000000E : FF(OR)OP3 : 0000000000OP4 : 0000000000OP5 : 0000000000OP6 : 0000000000OP7 : 0000000000Write : OKOP8 : 0000000000E x i t : MPOP9 : 0000000000Move : OPA : 0000000000E d i t : 1-7Copyri

48、ght 2008 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use OnlyUPGRADE THE MAIN & LOADER PROGRAM1. MAKING UPGRADE DISC1) Do Physical format as ISO9660 or JOLIET file system2) Dont care about the CD Volume label3) Write RH300 B_E & LOADER file on Root4) Wr

49、ite I_O file on RootNote) You cant write steps 3 and 4 on the same disc.Use the different disc to write another step.* OPTIONAL PARTS1) B_ELG_RH300_UPDATE_PAL.ROM2) LOADERDvdS617.rs6, Yas617.din3) I_Oio_micom_update.hex2. UPGRADE FLASH (MAIN & LOADER) and I_O1) Put Upgrde DISC on the Set2) After Dis

50、c Reading, You can see below screen* OPTIONAL PARTS1) MAINONLY B_E UPGRADE2) LOADERONLY LOADER UPGRADE3) ALLB_E & LOADER UPGRADE3) Press ENTER (or OK) KEY.You can see both current and upgrade version.4) Press PLAY KEY.Start upgrading.5) After upgrading, Automatically open tray.Eject the Disc.Reboot