LG-HDRF899X-hdd-sm 维修电路原理图.pdf

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1、HDD/DVD RECORDERSERVICE MANUALMODEL : RH200MH/HDRF899XMODEL : RH200MH/HDRF899XSERVICE MANUALP/NO : AFN30347550 MAY,2006CAUTIONBEFORE SERVICING THE UNIT, READ THE “SAFETYPRECAUTIONS”IN THIS MANUAL.RadioFans.CN 收音机爱 好者资料库CONTENTSSECTION 1 . . . .SUMMARYSECTION 2 . . . .CABINET & MAIN CHASSISSECTION 3

2、. . . .ELECTRICALSECTION 4 . . . .RS-01A LOADER PARTSECTION 5 . . . .REPLACEMENT PARTS LISTRadioFans.CN 收音机爱 好者资料库1-2SECTION 1SUMMARYCONTENTSNEW FUNCTIONS OF HDD/DVD-RECORDER. 1-2PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS. 1-3SERVICING PRECAUTIONS. 1-4 General Servicing Precautions Insul

3、ation Checking Prodedure Electrostatically Sensitive DevicesSERVICE INFORMATION FOR EEPROM IC SETTING. 1-5SPECIFICATIONS. 1-61-3NEW FUNCTIONS OF HDD/DVD-RECORDER HDMIHDMI IS THE SPECIFICATION FOR THE HIGH-DEFINITION MULTIMEDIA INTERFACE. HDMI IS PROVID-ED FOR TRANSMITTING DIGITAL TELEVISION AUDIOVIS

4、UAL SIGNALS FROM HDD-DVD RECORDER TOTELEVISION SETS, OTHER VIDEO DISPLAYS. HDMI CAN CARRY HIGH QUALITY MULTI-CHANNELAUDIO DATAAND CAN CARRY ALL STANDARD AND HIGH DEFINITION CONSUMER ELECTRONICSVIDEO FORMATS. CONTENT PROTECTION TECHNOLOGY IS AVAILABLE. HDMI CAN ALSO CARRYCONTROL AND STATUS INFORMATIO

5、N 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 IS USED BY THERECEIVER AS A FREQUENCY REFERENCE FOR DATA RECOVERY ON THE THREE TMDS DATA CHAN-NELS. VIDEO DATA IS CARRIED AS A S

6、ERIES OF 24-BIT PIXELS ON THE THREE TMDS DATA CHANNELS. TMDS ENCODING CONVERTS THE 8BIT PER CHANNEL INTO THE 10BIT DCBALANCED.VIDEO PIXEL RATES CAN RANGE FROM 25MHZ TO 165MHZ. THE VIDEO PIXELS CAN BE ENCODED IN EITHER RGB,YCBCR 4:4:4 OR YCBCR 4:2:2 FORMATS. IN ALL THREE CASES, UP TP 24 BITS PERPIXEL

7、 CAN 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 CARRIEDOUT AT THE MAXIMUM SPEED POSSIBLE.NORMAL DUBBI

8、NG : SPEED RATE MAX X1FAST DUBBING : SPEED RATE MAX X4WHEN FAST DUBBING FROM HDD TO DVD , THE SPEED OF COPYING DEPENDS ON THE RECORDINGMODE AND THE KIND OF USING THE DVD DISC, AND THIS MODE IS NOT AVAILABLE FOR EDITEDVIDEO TITLE IN HDD. WHEN FAST DUBBING FROM DVD TO HDD , ONLY AVAILABLE WHEN COPYING

9、 VR MODE DISC(DVD-RW) TO HDD , AND ONLY NORMAL DUBBING AVAILABLE WHEN COPYING VIDEO MODE DISC(DVD+R/RW, DVD-R) TO HDD 1-4IMPORTANT SAFETY NOTICEThis manual was prepared for use only by properly trained audio-video servicetechnicians.When servicing this product, under no circumstances should the orig

10、inaldesign be modified or altered without permission from LG ElectronicsCorporation. All components should be replaced only with types identical tothose in the original circuit and their physical location, wiring and lead dressmust conform to original layout upon completion of repairs.Special compon

11、ents are also used to prevent x-radiation, shock and fire haz-ard. These components are indicated by the letter “x” included in their compo-nent designators and are required to maintain safe performance. No deviationsare allowed without prior approval by LG Electronics Corporation.Circuit diagrams m

12、ay occasionally differ from the actual circuit used. This way,implementation of the latest safety and performance improvement changesinto the set is not delayed until the new service literature is printed.CAUTION: Do not attempt to modify this product in any way. Never performcustomized installation

13、s without manufacturers approval. Unauthorized modi-fications will not only void the warranty, but may lead to property damage oruser injury.Service work should be performed only after you are thoroughly familiar withthese safety checks and servicing guidelines.GRAPHIC SYMBOLSThe exclamation point w

14、ithin an equilateral triangle is intended toalert the service personnel to important safety information in theservice literature.The lightning flash with arrowhead symbol within an equilateral tri-angle is intended to alert the service personnel to the presence ofnoninsulated “dangerous voltage” tha

15、t may be of sufficient magni-tude to constitute a risk of electric shock.The pictorial representation of a fuse and its rating within an equi-lateral triangle is intended to convey to the service personnel thefollowing fuse replacement caution notice: CAUTION: FOR CONTINUED PROTECTION AGAINST RISKOF

16、 FIRE, REPLACE ALL FUSES WITH THE SAME TYPE ANDRATING AS MARKED NEAR EACH FUSE.SERVICE INFORMATIONWhile servicing, use an isolation transformer for protection from AC line shock.After the original service problem has been corrected, make a check of the fol-lowing:FIRE AND SHOCK HAZARD1. Be sure that

17、 all components are positioned to avoid a possibility of adjacentcomponent shorts. This is especially important on items trans-ported to andfrom the repair shop.2. Verify that all protective devices such as insulators, barriers, covers, shields,strain reliefs, power supply cords, and other hardware

18、have been reinstalledper the original design. Be sure that the safety purpose of the polarized lineplug has not been defeated.3. Soldering must be inspected to discover possible cold solder joints, soldersplashes, or sharp solder points. Be certain to remove all loose foreign par-ticles.4. Check for

19、 physical evidence of damage or deterioration to parts and compo-nents, for frayed leads or damaged insulation (including the AC cord), andreplace if necessary.5. No lead or component should touch a high current device or a resistor ratedat 1 watt or more. Lead tension around protruding metal surfac

20、es must beavoided.6. After reassembly of the set, always perform an AC leakage test on allexposed metallic parts of the cabinet (the channel selector knobs, antennaterminals, handle and screws) to be sure that set is safe to operate withoutdanger of electrical shock. DO NOT USE A LINE ISOLATION TRAN

21、S-FORMER DURING THIS TEST. Use an AC voltmeter having 5000 ohms pervolt or more sensitivity in the following manner: Connect a 1500 ohm, 10watt resistor, paralleled by a .15 mfd 150V AC type capacitor between aknown good earth ground water pipe, conduit, etc.) and the exposed metal-lic parts, one at

22、 a time. Measure the AC voltage across the combination of1500 ohm resistor and .15 mfd capacitor. Reverse the AC plug by using anon-polarized adaptor and repeat AC voltage measurements for eachexposed metallic part. Voltage measured must not exceed 0.75 volts RMS.This corresponds to 0.5 milliamp AC.

23、 Any value exceeding this limit consti-tutes a potential shock hazard and must be corrected immediately.TIPS ON PROPER INSTALLATION1. Never install any receiver in a closed-in recess, cubbyhole, or closely fittingshelf space over, or close to, a heat duct, or in the path of heated air flow.2. Avoid

24、conditions of high humidity such as: outdoor patio installations wheredew is a factor, near steam radiators where steam leakage is a factor, etc.3. Avoid placement where draperies may obstruct venting. The customershould also avoid the use of decorative scarves or other coverings thatmight obstruct

25、ventilation.4. Wall- and shelf-mounted installations using a commercial mounting kit mustfollow the factory-approved mounting instructions. A product mounted to ashelf or platform must retain its original feet (or the equivalent thickness inspacers) to provide adequate air flow across the bottom. Bo

26、lts or screwsused for fasteners must not touch any parts or wiring. Perform leakage testson customized installations.5. Caution customers against mounting a product on a sloping shelf or in a tilt-ed position, unless the receiver is properly secured.6. A product on a roll-about cart should be stable

27、 in its mounting to the cart.Caution the customer on the hazards of trying to roll a cart with small cast-ers across thresholds or deep pile carpets.7. Caution customers against using extension cords. Explain that a forest ofextensions, sprouting from a single outlet, can lead to disastrous conse-qu

28、ences to home and family.A.C. Voltmeter1500 OHM10 WATTPlace this probeon each exposedmetal part.Good Earth Groundsuch as the WaterPipe, Conduit, etc.0.15uFPRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS1-5SERVICING PRECAUTIONSCAUTION : Before servicing the HDD/DVD Recorder cov-ered by this se

29、rvice data and its supplements and addends,read and follow the SAFETY PRECAUTIONS. NOTE : ifunforeseen circumstances create conflict between the fol-lowing servicing precautions and any of the safety precau-tions in this publications, always follow the safety precau-tions.Remembers Safety First:Gene

30、ral Servicing Precautions1. Always unplug the HDD/DVD Recorder AC power cordfrom the AC power source before:(1)Removing or reinstalling any component, circuit board, module, or any other assembly.(2)Disconnection or reconnecting any internal electricalplug or other electrical connection.(3)Connectin

31、g a test substitute in parallel with an elec-trolytic capacitor.Caution : A wrong part substitution or incorrect polarity installation of electrolytic capacitors may resultin an explosion hazard.2. Do not spray chemicals on or near this HDD/DVDRecorder or any of its assemblies.3. Unless specified ot

32、herwise in this service data, cleanelectrical contacts by applying an appropriate contact cleaning solution to the contacts with a pipe cleaner,cotton-tipped swab, or comparable soft applicator.Unless specified otherwise in this service data, lubricationof contacts is not required.4. Do not defeat a

33、ny plug/socket B+ voltage interlocks withwhitch instruments covered by this service manual mightbe equipped.5. Do not apply AC power to this HDD/DVD Recorder and/orany of its electrical assemblies unless all solid-statedevice heat sinks are cerrectly installed.6. Always connect test instrument groun

34、d lead to theappropriate ground before connection the test instrumentpositive lead. Always remove the test instrument ground lead last.Insulation Checking ProcedureDisconnect the attachment plug from the AC outlet and turnthe power on. Connect an insulation resistance meter(500V)to the blades of the

35、 attachment plug. The insulation resis-tance between each blade of the attachment plug and acces-sible conductive parts (Note 1) should be more than 1M-ohm.Note 1 : Accessible Conductive Parts including Metal pan-els, Input terminals, Earphone jacks, etc.Electrostatically Sensitive (ES) DevicesSome

36、semiconductor (solid state) devices can be damagedeasily by static electricity. Such components commonly arecalled Electrostatically Sensitive (ES) Devices. Examples oftypical ES devices are integrated circuits and some fieldeffect transistors and semiconductor chip components.The following techniqu

37、es should be used to help reduce theincidence of component damage caused by static electricity.1. Immediately before handling any semiconductor compo-nent or semiconductor-equipped assembly, drain off anyelectrostatic charge on your body by touching a knownearth ground. Alternatively, obtain and wea

38、r a commer-cially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test.2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to preve

39、nt electrostatic charge buildup or exposure of the assembly.3. Use only a grouned-tip soldering iron to solder or unsolderES devices.4. Use only an anti-static solder removal device. Somesolder removal devices not classified a “anti-static” cangenerate electrical charges sufficient to damage ES devi

40、ces.5. Do not use freon-propelled chemicals. These cangenerate electrical charge sufficient to damage ESdevices.6. Do not remove a replacement ES device from its protective package until immediately before you are ready toinstall it. (Most replacement ES devices are packaged withleads electrically s

41、horted together by conductive foam,aluminum foil, or comparable conductive material).7. Immediately before removing the protective material fromthe leads of a replacement ES device, touch the protectivematerial to the chassis or circuit assembly into which thedevice will be installed.Caution : Be su

42、re no power is applied to the chassis orcircuit, and observe all other safety precautions.8. Minimize bodily motions when handling unpackaged replacement ES devices. (Normally harmless motion such as the brushing together of your clothes fabric or the liftingof your foot from a carpeted floor can ge

43、nerate static elec-tricity sufficient to damage an ES device.)1-6SERVICE INFORMATION FOR EEPROM IC SETTINGMICOM STARTEEPROM ID CHECK2 BYTE(B3,248,249)NAMEHEXBINARYOPT10000000000OPT2 0000000000OPT3 00 00000000OPT4 0000000000 (reserved)OPT5 00 00000000 (reserved)OPT6 0000000000 (reserved)OPT7 00000000

44、00 (reserved)OPT8 00 00000000 (reserved)WRITE:OK EXIT:MENU,MPMOVE: EDIT : _OPTION WRITE : OK (OK KEY IN)MASK : R00 , EEP : R00 , (D10)(Each mask ,eeprom, It shows a developmentrelease version.)DETECT NEW EEPROM (OPTION EDIT SCREEN)* EEPROM INITIAL *- SETUP is displayed in the field if pressing the F

45、ront ch- & ch+ Key with the Remocon number clearkey pressed in the status of powering on.- AUTO SEARCH is done since the initial screen of ACMS is serviced if powering on.OPTION DATA READ5TIME & COMPAREMICOM NORMALOPERATION STARTPress the CLEAR key on theRemote controller and the CH - key one the Fr

46、ont Panel the sametime, then it goes in to Trackinginitial mode.OPTION CONFIRMATION MODEID OK?NoNoYesYesYes1-7SPECIFICATIONS GENERALPower requirements AC 200-240V, 50/60 HzPower consumption 35WDimensions (approx.) 430 X 54 X 275 mm (w x h x d) without footMass (approx.) 4.1 kgOperating temperature 5

47、C to 35COperating humidity 5 % to 90 %Television system PAL I, B/G, I/I, SECAM D/K, K1 color systemRecording format PAL RECORDINGRecording format DVD Video Recording, DVD-VIDEORecordable media HDD (80GB), DVD-ReWritable, DVD-Recordable, DVD+ReWritable,DVD+Recordable, DVD+Recordable (Double Layer)Rec

48、ordable time DVD (4.7GB): Approx. 1 hour (XP mode), 2 hours (SP mode),4 hours (LP mode), 6 hours (EP mode)DVD+R DL (8.5GB): Approx. 3 hour (XP mode),3 hours 40 minutes (SP mode), 7 hours 10 minutes (LP mode),10 hours 30 minutes (EP mode)HDD (80GB): Approx. 20 hours (XP mode), 40 hours (SP mode),74 h

49、ours (LP mode), 111 hours (EP mode)Video recording formatSampling frequency27MHzCompression format MPEG 2 (VBR support)Audio recording formatSampling frequency 48kHzCompression format Dolby Digital PLAYBACKFrequency response DVD (PCM 48 kHz): 8 Hz to 22 kHz, CD: 8 Hz to 20 kHzDVD (PCM 96 kHz): 8 Hz

50、to 44 kHzSignal-to-noise ratio More than 100 dB (AUDIO OUT connector)Harmonic distortion Less than 0.008% (AUDIO OUT connector)Dynamic range More than 95 dB (AUDIO OUT connector) INPUTSAERIAL IN Aerial input, 75 ohmsVIDEO IN 1.0 Vp-p 75 ohms, sync negative, RCA jack x 2 / SCART x 2AUDIO IN 2.0 Vrms