LG-BD370-br-sm 维修电路原理图.pdf

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1、P/NO : AFN70285080 FEB, 2009BLU-RAY DISC PLAYERSERVICE MANUALMODEL : BD370CAUTIONBEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”IN THIS MANUAL.Website http:/Internal Use OnlyMODEL : BD370SERVICE MANUALAv. Sor Juana lns de la Cruz No 555Col. San LorenzoTlalnepantla, Estado de Mxico CP 54033T

2、el. 321 19 00 Fax. 5 657549Lada sin costo 01 800 50 481 00RadioFans.CN 收音机爱 好者资料库 1-1Copyright 2009 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use OnlyCONTENTSSECTION 1 .SUMMARYSECTION 2 .CABINET & MAIN CHASSISSECTION 3 .ELECTRICALSECTION 4 .HL-04P LOA

3、DER PARTSECTION 5 .REPLACEMENT PARTS LISTRadioFans.CN 收音机爱 好者资料库 1-2Copyright 2009 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use OnlySECTION 1SUMMARYCONTENTSPRODUCT SAFETY SERVICING GUIDELINES FORBLU-RAY DISC PLAYER PRODUCTS. 1-3SERVICING PRECAUTIONS

4、.1-4 General ServicinG PrecautionS inSulation checkinG Prodedure electroStatically SenSitive (eS) deviceSSOFTWARE UPGRADE . 1-5SPECIFICATIONS .1-6 1-3Copyright 2009 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use OnlyPRODUCT SAFETY SERVICING GUIDELINESF

5、OR BLU-RAY DISC PLAYER PRODUCTSIMPORTANT SAFETY NOTICEthis manual was prepared for use only by properly trained audio-video service technicians.When servicing this product, under no circumstances should the original design be modified or altered without permission from lG corporation. all components

6、 should be replaced only with types identical to those in the original circuit and their physical location, wiring and lead dress must conform to original layout upon completion of repairs.Special components are also used to prevent x-radiation, shock and fire hazard.these components are indicated b

7、y the letter “x” included in their component des-ignators and are required to maintain safe performance. no deviations are allowed without prior approval by lG corporation.circuit diagrams may occasionally differ from the actual circuit used. this way, implementation of the latest safety and perform

8、ance improvement changes into the set is not 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 will not only void the warranty, but may lea

9、d to property damage or user injury.Service work should be performed only after you are thoroughly familiar with these safety checks and servicing guidelines.GRAPHIC SYMBOLSthe exclamation point within an equilateral triangle is intended to alert the service personnel to important safety information

10、 in the service literature.the lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the service personnel to the presence of noninsulated “dangerous voltage” that may be of sufficient magnitude to constitute a risk of electric shock.the pictorial representation o

11、f a fuse and its rating within an equi-lateral triangle is intended to convey to the service personnel the following fuse replacement caution notice:CAUTION : For continued Protection aGainSt riSk oF Fire, rePlace all FuSeS With the SaMe tyPe and ratinG aS Marked near each FuSe.SERVICE INFORMATIONWh

12、ile servicing, use an isolation transformer for protection from ac line shock. after the 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 component shorts. this is especial

13、ly important on items trans-ported to and from the repair shop.2. verify that all protective devices such as insulators, barriers, covers, shields, strain reliefs, power supply cords, and other hardware have been reinstalled per the original design. Be sure that the safety purpose of the polarized l

14、ine plug has not been defeated.3. Soldering must be inspected to discover possible cold solder joints, solder splashes, or sharp solder points. Be certain to remove all loose foreign par-ticles.4. check for physical evidence of damage or deterioration to parts and compo-nents, for frayed leads or da

15、maged insulation (including the ac cord), and replace if necessary.5. no lead or component should touch a high current device or a resistor rated at 1 watt 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

16、exposed metallic parts of the cabinet (the channel selector knobs, antenna terminals, handle and screws) to be sure that set is safe to operate without danger of electrical shock. do not uSe a line iSolation tranSForMer durinG thiS teSt. use an ac voltmeter having 5000 ohms per volt or more sensitiv

17、ity in the following manner: connect a 1500 ohm, 10 watt resistor, paralleled by a .15 mfd 150v 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 volt-age across the combination of 1500 ohm resistor and .15 mf

18、d capacitor. reverse the ac plug by using a non-polarized adaptor and repeat ac voltage measure-ments for each exposed metallic part. voltage measured must not exceed 0.75 volts rMS. this corresponds to 0.5 milliamp ac. any value exceeding this limit constitutes a potential shock hazard and must be

19、corrected immediately.TIPS ON PROPER INSTALLATION1. never install any receiver in a closed-in recess, cubbyhole, or closely fitting shelf space 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 dew is a

20、factor, near steam radiators where steam leakage is a factor, etc. 3. avoid placement where draperies may obstruct venting. the customer should also avoid the use of decorative scarves or other coverings that might obstruct ventilation.4. Wall- and shelf-mounted installations using a commercial moun

21、ting kit must follow the factory-approved mounting instructions. a product mounted to a shelf or platform must retain its original feet (or the equivalent thickness in spacers) to provide adequate air flow across the bottom. Bolts or screws used for fasteners must not touch any parts or wiring. Perf

22、orm leakage tests on customized instal-lations.5. caution customers against mounting a product on a sloping shelf or in a tilted position, unless the receiver is properly secured.6. a product on a roll-about cart should be stable in its mounting to the cart. caution the customer on the hazards of tr

23、ying to roll a cart with small casters across 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 to home and family. 1-4Copyright 2009 LG Electronics. Inc. All r

24、ight reserved.Only for training and service purposesLGE Internal Use OnlySERVICING PRECAUTIONScaution: Before servicing the Blu-ray diSc Player cov-ered by this service data and its supplements and addends, read and follow the SaFety PrecautionS. note: if unforeseen circumstances create conflict bet

25、ween the follow-ing servicing precautions and any of the safety precautions in this publications, always follow the safety precautions.remember Safety First :General Servicing Precautions1. always unplug the Blu-ray diSc Player ac power cord from the ac power source before: (1) removing or reinstall

26、ing any component, circuit board, module, or any other assembly. (2) disconnecting or reconnecting any internal electrical plug or other electrical connection. (3) connecting a test substitute in parallel with an electro-lytic capacitor. Caution : a wrong part substitution or incorrect polar-ity ins

27、tallation of electrolytic capacitors may result in an explosion hazard.2. do not spray chemicals on or near this Blu-ray diSc Player or any of its assemblies.3. unless specified otherwise in this service data, clean elec-trical contacts by applying an appropriate contact cleaning solution to the con

28、tacts with a pipe cleaner, cotton-tipped swab, or comparable soft applicator. unless specified otherwise in this service data, lubrication of contacts is not required.4. do not defeat any plug/socket B+ voltage interlocks with whitch instruments covered by this service manual might be equipped.5. do

29、 not apply ac power to this Blu-ray diSc Player and / or any of its electrical assemblies unless all solidstate device heat sinks are correctly installed.6. always connect the test instrument ground lead to an appropriate ground before connecting the test instrument positive lead. always remove the

30、test instrument ground lead last.Insulation Checking Proceduredisconnect the attachment plug from the ac outlet and turn the power on. connect an insulation resistance meter (500v)to the blades of the attachment plug. the insulation resistance between each blade of the attachment plug and accessible

31、 conductive parts (note 1) should be more than 1Mohm.Note 1 : accessible conductive Parts include Metal panels, input terminals, earphone jacks,etc.Electrostatically Sensitive (ES) DevicesSome semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly a

32、re called electrostatically Sensitive (eS) devices. examples of typical eS devices are integrated circuits and some field effect transistors and semiconductor chip components.the following techniques should be used to help reduce the incidence of component damage caused by static electricity.1. imme

33、diately before handling any semiconductor compo-nent or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential sho

34、ck 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 prevent electrostatic charge buildup or exposure of the assembly.3. Use only a grounded-tip soldering iron

35、 to solder or unsolder eS devices.4. use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static” can generate electrical charges sufficient to damage eS devices.5. do not use freon-propelled chemicals. these can generate an electrical charge sufficient

36、to damage eS devices.6. do not remove a replacement eS device from its protective package until immediately before you are ready to install it. (Most replacement eS devices are packaged with leads electrically shorted together by conductive foam, aluminum foil,or comparable conductive material).7. i

37、mmediately before removing the protective material from the leads of a replacement eS device, touch the protective material to the chassis or circuit assembly into which the device will be installed. caution: Be sure no power is applied to the chassis or cir-cuit, and observe all other safety precau

38、tions.8. Minimize bodily motions when handling unpackaged replacement eS devices. (normally harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static elec-tricity sufficient to damage an eS device.) 1-5Copyright 2009 LG

39、 Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only Burn a dvd recordable disc or uSB with a file that is named to “lG_Bd_lv400M.roM(Bd370)”. insert a upgrading disc or uSB. Show help message for disc upgrade as follows. Press play key to upgrade and it

40、will show progress informationafter completing upgrade then power is off.SOFTWARE UPGRADE 1-6Copyright 2009 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use OnlySPECIFICATIONS GeneralPower requirements: ac 100240v, 50/60hzPower consumption: 18Wdimensions

41、 (W x h x d): approx. 430 x 54 x 245mm without footWeight (approx.): 2.7kgoperating temperature: 5c to 35operating humidity: 5% to 90% Outputsvideo out: 1.0v (p-p), 75, sync negative, rca jack x 1coMPonent video out: (y) 1.0v (p-p), 75, sync negative, rca jack x 1 (Pb)/(Pr) 0.7v (p-p), 75, rca jack

42、x 2hdMi out (video/audio): 19pin (hdMi standard, type a)analoG audio out: 2.0vrms (1khz, 0dB), 600, rca jack (l, r) x 1diGital out (coaXial): 0.5v (p-p), 75, rca jack x 1diGital out (oPtical): 3v (p-p), optical jack x 1 systemlaser: Semiconductor laser, wavelength: 405nm / 650nmSignal system: Standa

43、rd Pal/ntSc color tv systemFrequency response: 20hz to 20khz (48khz, 96khz, 192khz sampling)Signal-to-noise ratio: More than 100dB (analoG out connectors only)harmonic distortion: less than 0.008%dynamic range: More than 95dBlan port: ethernet jack x 1, 10BaSe-t/100BaSe-tXNote : design and specifica

44、tions are subject to change prior notice. 2-1Copyright 2009 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use OnlySECTION 2CABINET & MAIN CHASSISCONTENTSDISASSEMBLY INSTRUCTIONS .2-2EXPLODED VIEWS . 2-31. caBinet and Main FraMe Section . 2-32. deck Mechan

45、iSM Section (hl-04P) . 2-43. PackinG acceSSory Section .2-5 2-2Copyright 2009 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use OnlyDISASSEMBLY INSTRUCTIONS1. It is the product appearance.2. remove the three screws on the back panel to seperate the top co

46、ver.3. Push the top cover backward to seperate the top cover completely.4. remove the nine front panel hooks (four hooks on the top, two hooks on the both side and three hooks on the bottom) to seperate the front panel.5. It is the feature that the top and front panel are seperated. 2-3Copyright 200

47、9 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use OnlySVC purchase order cautionkey board is array coming timer board.Purchase order board separately supply incomprehensible.Supply is possible in location no. a50 state in exploded views.300462250468CABL

48、E3BCABLE4C468A47SMPSBOARDMAINBOARDBCA468A46468468468A43A43A283284284A50A275452CABLE1275A44465320465260261261261TIMERBOARDKEYBOARD470283A285285A285BEXPLODED VIEWS1. CABINET AND MAIN FRAME SECTIONCABLE2 2-4Copyright 2009 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE

49、 Internal Use Only2. DECK MECHANISM SECTION (HL-04P)10181019IN ONLY1043104514371025143910471048104110111030A00214311002A001100110031026101310171433101610151012102010201046CABLE3A52LOADERBOARDCABLE41049A60OPTIONAL PARTrefer to hoW to uSe the Bar-code Scan tool (Page4-9 4-11) after replacing A002, A52

50、 and 1049Service NoticeA005 2-5Copyright 2009 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only3. PACKING ACCESSORY SECTION808 Battery812 Plug assy 811 Plug assy 823 hdMi cable804 Bag803 Packing900 remote control801 instruction assy803 Packing802 Box