LG-DVD3230N-cd-sm 维修电路原理图.pdf

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1、Top View.4-1Top View(without Tray Disc).4-1Bottom View .4-11. Holder Clamp.4-21-1. Clamp Assembly Disc.4-21-1-1. Plate Clamp .4-21-1-2. Magnet Clamp .4-21-1-3. Clamp Upper.4-22. Tray Disc.4-23. Base Assembly Sled.4-33-1. Gear Assembly Feed.4-33-2. Gear Assembly Middle.4-33-3. Gear Assembly Rack.4-34

2、. Rubber Rear.4-35. Frame Assembly Up/Down.4-46. Belt Loading.4-47. Gear Pulley .4-48. Gear Loading.4-49. Guide Up/Down.4-410. PWB Assembly Loading.4-411. Base Main.4-41. Tools and Fixtures for SVC.4-52. Install Process.4-53. Adjustment Process.4-61. Deck Mechanism Exploded View.4-7CONTENTSSECTION 4

3、 MECHANISMDECK MECHANISM PARTSLOCATIONSEXPLODED VIEWDECK MECHANISM ADJUSTMENTDECK MECHANISMDISASSEMBLYRadioFans.CN 收音机爱 好者资料库4-1DECK MECHANISM PARTS LOCATIONStarting No.11, 21, 2, 31, 2, 3, 411, 61, 2, 61, 2, 6, 81, 2, 6, 8,91, 2, 71, 2, 71, 21, 2 ,131, 2, 13, 141, 2, 7, 12, 13, 141, 2, 131, 2, 7, 1

4、2, 13,14, 15, 16, 17123456789101112131415161718HolderClampClamp AssemblyDiscPlate ClampMagnet Clamp Clamp UpperTray DiscBase Assembly SledGear AssemblyFeedGearMiddleGear AssemblyRackRubber RearFrame AssemblyUp/DownBelt LoadingGear PulleyGear LoadingGuide Up/DownPWB AssemblyLoadingBase Main2 Screws,2

5、 Locking Tabs4 Screws,1 Connector1 Locking Tabs1 Screw1 Screw1 Locking Tab1 Locking Tab1 Locking Tab1 Hook2Screw2 Locking Tabs4-14-14-14-14-14-24-34-34-34-34-34-44-44-44-44-44-44-4BottomBottom ProcedurePartsFixing TypeFig-ureDisassemblyNoteWhen reassembling, perform the procedure inreverse order.The

6、 “Bottom” on Disassembly column of aboveTable indicates the part should be disassembledat the Bottom side. Top View (Without Tray) Bottom View Top View (With Tray)RadioFans.CN 收音机爱 好者资料库4-2DECK MECHANISM DISASSEMBLY1.Holder Clamp (Fig. 4-1)1) Release 2 Screws(S1).2) Unhook 2 Locking Tabs(L1).3) Lift

7、 up the Holder Clamp and then separate it from theBase Main.1-1. Clamp Assembly Disc1) Place the Clamp Assembly Disc as Fig. (A)2) Lift up the Clamp Assembly Disc in direction ofarrow(A).3) Separate the Clamp Assembly Disc from the HolderClamp.1-1-1. Plate Clamp1) Turn the Plate Clamp to countercloc

8、kwise direction andthen lift up the Plate Clamp.1-1-2. Magnet Clamp1-1-3.Clamp Upper2. Tray Disc (Fig. 4-2)1) Insert and push a Driver in the emergency ejecthole(A) at the right side, or put the Driver on theLever(B) of the Gear Emergency and pull the Lever(B) in direction of arrow so that the Tray

9、Disc is ejectedabout 1520mm.2) Pull the Tray Disc until it is separated from the BaseMain completely.BASE MAINHOLDER CLAMPHOLDER CLAMPCLAMP ASSEMBLY DISCHOLDER CLAMPPLATE CLAMP(S1)(S1)(A)(L1)(L1)(Fig. A)MAGNET CLAMPCLAMP UPPER(B)LEVERBOTTOM SIDE VIEWEMERGENCY EJECT HOLE(A)TRAY DISCBASE MAINBASE MAIN

10、Fig. 4-1Fig. 4-24-3DECK MECHANISM DISASSEMBLY(L2)(S2)(C1)(S2)(S2)(S2)(S3)GEAR ASSEMBLY RACKPICK UP ASSEMBLY GENERALGEAR MIDDLEGEAR ASSEMBLY FEEDBASE PU(OUTSERT)RUBBER REARGEAR ASSEMBLY FEEDGEAR MIDDLEGAER ASSEMBLY RACKMOTOR ASSEMBLY SPINDLEPICK UP ASSEMBLY GENERALMOTOR ASSEMBLY SPINDLE3.Base Assembl

11、y Sled (Fig. 4-3)1) Release 4 Screw(S2).2) Disconnect the FFC Connector(C1)3-1. Gear Assembly Feed1) Unhook the Locking Tab(L2) in direction of arrow.3-2. Gear Middle3-3. Gear Assembly Rack1) Release the Scerw(S3)4. Rubber Rear (Fig. 4-3) Fig. 4-34-4DECK MECHANISM DISASSEMBLY(B)(S5)(L6)(L4)(L5)(A)(L

12、3)(A)(L6)(H1)(C2)(L6)FIG. (B)GUIDE UP/DOWNBASE MAINBASE MAINPWB ASSEMBLY LOADINGGEAR LOADINGBELT LOADINGFRAME ASSEMBLY UP/DOWNGUIDE UP/DOWNGUIDE UP/DOWNGUIDE UP/DOWN(A)(B)(S4)FIG. (C)FIG. (A)(B)(C)GEAR PULLEYFig. 4-45. Frame Assembly Up/DownPut the Base Main face down(Bottom Side)1) Release the Scre

13、w(S4)2) Unlock the Locking Tab(L3) in direction of arrow andthen lift up the Frame Assembly Up/Down to separateit from the Base Main. When reassembling move the Guide Up/Down in directionof arrow(C) until it is positioned as Fig.(C). When reassembling insert (A) portion of the FrameAssembly Up/Down

14、in the (B) portion of the GuideUp/Down as Fig.(B)6. Belt Loading(Fig. 4-4)Put the Base Assembly Main on original position(Top Side)7. Gear pulley (Fig. 4-4)1) Unlock the Locking Tab(L4) in direction of arrow(B) andthen separate the Gear Pulley from the Base Main.8. Gear Loading (Fig. 4-4)9. Guide Up

15、/Down (Fig. 4-4)1) Move the Guide Up/Down in direction of arrow(A) asFig.(A)2) Push the Locking Tab(L5) down and then lift up theGuide Up/Down to separate it from the Base Main.When reassembling place the Guide Up/Down as Fig.(C)and move it in direction arrow(B) until it is locked by theLocking Tab(

16、L5). And confirm the Guide Up/Down as Fig.(A)10. PWB Assembly LoadingPut the Base Main face down(Bottom Side)1) Release 2 Screws(S5)2) Unkool the Loading Motor Connector (C2) from theHook (H1) on the Base Main.3) Unlock 2 Locking Tabs(L6) and separate the PWBAssembly Loading from the Base Main.11. B

17、ase Main(Fig. 4-4)NoteNoteNoteNoteNote4-5DECK MECHANISM ADJUSTMENT1. Tools and Fixtures for SVC For SVC Program Down-Load For T-Skew and R-Skew Adjustment2. Install Process1. Connect Fig. 1, 2, 3 as Fig. 7.2. Plug out the Power cord of DVD set.3. Connect FFC Cable(Fig.2) to the Connector on DVD Set(

18、Fig.8)4. Connect Printer Cable(Fig.1) to the P.C.Printer Port (LPT1).5. Plug in the DVD Power cord.6. Press the Menu key on Remocon.7. Confirm No.1 LED(RED Color) of Jig board is ON. (Fig.9)8. Perform The S/W for Down-load at P.C.9. Open the Program File for Adjusting(Fig.10)10. Click the Down-load

19、Icon and perform Program Down-load.11. Displayed remaining time.12. Confirm LED No.1(RED) and No.2(GREEN) is ON.13. Plug out the DVD Set Power cord.14. Disconnect the FFC Cable.Fig.1. Printer CableFig.2. FFC Cable (15 pin)Fig.3. Jig BoardFig.4. Deviation Disc (0.8mm)Fig.5. L-Wrench(3mm)Fig.6. RCA Ja

20、ckFig.7. Connecting MethodREDGREENREDRom SizeFile Help16MBit6M BitLPT1Manual953826Bytesmd _bas_ntsc.binLPT2PortFILE NAMEOPENDOWN LOADCLOSEFig.8. FFC Cable ConnectingFig.9. Jig Board LED ConditionFig.10. Adjusting Program File OpenM E M O4-6DECK MECHANISM ADJUSTMENT3. Adjustment Procedure1. Insert Di

21、sc(Only Open/Close Key Pressing)2. Wait Until the Sector Display is about 200,000 (Fig.11)3. Adjust R-Skew adjusting Point until the Error rate hasMinimum rate with L-wrench (3mm).4. Adjust T-Skew Adjusting Point until the Error rate hasMinimum rate.5. Repeat No. 3, 4 adjusting procedure until the E

22、rror ratehave Minimum rate.6. Error rate; SVC-3561 Disc=below 30 and TDV-533Disc=below 100. If not, Please confirm Play ability onscreen.# You can watch the screen when pressing the Stop keyafter the Adjusting is finished, Then perform Play andScan/Skip operation at Chapter1 and Chapter16 andconfirm

23、 screen condition, normal or abnormal. Please obtain these software for Adjusting through ourGlobal Cyber Service Center(GCSC). The location is http:/& Web Site for End users& Software updates & Product : DVD Player & Search. R-SKEW ADJUSTING HOLET-SKEW ADJUSTING HOLEFig.12. Adjusting MethodFig.11.

24、Adjusting Screen Display0045SECTOR : 20014500650045SECTOR : 2001450065CURRENT PICK UP POSITIONERROR RATE SIZEERROR RATE (HEXADEAMAL)AVERAGE ERROR RATE4-74-8EXPLODED VIEWS1. Deck Mechanism Exploded View002001003004429429026018008009016012430430430430432020430011017014013015431A01A02A031-3CAUTION : DO

25、 NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY,NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC-TURERS APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLYVOID THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANYRESULTING PROPERTY DAMAGE OR USER INJURY.SERVICE WORK SHOULD BE PERFORMED ONLY AF

26、TER YOU ARETHOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETYCHECKS AND SERVICING GUIDELINES. TO DO OTHERWISE,INCREASES THE RISK OF POTENTIAL HAZARDS AND INJURY TO THEUSER.WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTEC-TION FROM A.C. LINE SHOCK.SAFETY CHECKSAFTER THE ORIGINAL SERVICE PRO

27、BLEM HAS BEEN CORRECTED. ACHECK SHOULD BE MADE OF THE FOLLOWING.SUBJECT : FIRE & SHOCK HAZARD1. BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH A WAYAS TO AVOID POSSIBILITY OF ADJACENT COMPONENT SHORTS.THIS IS ESPECIALLY IMPORTANT ON THOSE MODULES WHICH ARETRANSPORTED TO AND FROM THE REPAIR SHOP.

28、2. NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE DEVICESSUCH AS INSULATORS, BARRIERS, COVERS, SHIELDS, STRAIN RELIEFS, POWER SUPPLY CORDS, AND OTHER HARDWARE HAVEBEEN REINSTALLED PER ORIGINAL DESIGN. BE SURE THAT THESAFETY PURPOSE OF THE POLARIZED LINE PLUG HAS NOT BEENDEFEATED.3. SOLDERING MUST BE I

29、NSPECTED TO DISCOVER POSSIBLE COLDSOLDER JOINTS, SOLDER SPLASHES OR SHARP SOLDER POINTS.BE CERTAIN TO REMOVE ALL LOOSE FOREIGN PARTICLES.4. CHECK FOR PHYSICAL EVIDENCE OF DAMAGE OR DETERIORATIONTO PARTS AND COMPONENTS, FOR FRAYED LEADS, DAMAGEDINSULATION (INCLUDING A.C. CORD), AND REPLACE IF NECESSA

30、RY.FOLLOW ORIGINAL LAYOUT, LEAD LENGTH AND DRESS.5. NO LEAD OR COMPONENT SHOULD TOUCH A RECIVING TUBE ORA RESISTOR RATED AT 1 WATT OR MORE. LEAD TENSION AROUNDPROTRUDING METAL SURFACES MUST BE AVOIDED.6. ALL CRITICAL COMPONENTS SUCH AS FUSES, FLAMEPROOFRESISTORS, CAPACITORS, ETC. MUST BE REPLACED WI

31、TH EXACTFACTORY TYPES, DO NOT USE REPLACEMENT COMPONENTSOTHER THAN THOSE SPECIFIED OR MAKE UNRECOMMENDED CIR-CUIT MODIFICATIONS.7. AFTER RE-ASSEMBLY OF THE SET ALWAYS PERFORM AN A.C.LEAKAGE TEST ON ALL EXPOSED METALLIC PARTS OF THE CABI-NET, (THE CHANNEL SELECTOR KNOB, ANTENNA TERMINALS. HAN-DLE AND

32、 SCREWS) TO BE SURE THE SET IS SAFE TO OPERATEWITHOUT DANGER OF ELECTRICAL SHOCK. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS TEST USE AN A.C. VOLT-METER, HAVING 5000 OHMS PER VOLT OR MORE SENSITIVITY, INTHE FOLLOWING MANNER; CONNECT A 1500 OHM 10 WATT RESIS-TOR, PARALLELED BY A .15 MFD. 150

33、.V A.C TYPE CAPACITORBETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE, CON-DUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME.MEASURE THE A.C. VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND .15 MFD CAPACITOR. REVERSE THE A.C. PLUGAND REPEAT A.C. VOLTAGE MEASUREMENTS FOR EACH EXPOSED MET

34、ALLIC PART. VOLTAGE MEASURED MUST NOT EXCEED 75VOLTS R.M.S. THIS CORRESPONDS TO 0.5 MILLIAMP A.C ANYVALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCKHAZARD AND MUST BE CORRECTED IMMEDIATELY.SUBJECT: GRAPHIC SYMBOLSTHE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHINAN EQUILATERAL TRIANGLE, IS IN

35、TENDED TO ALERT THESERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED“DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAG-NITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK.THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIAN-GLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TOTHE PRESENCE OF IMPORTANT SAFETY INFOR

36、MATION INSERVICE LITERATURE.SUBJECT : X-RADIATION1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER-SONNEL COVER THE SUBJECT OF X-RADIATION. THE ONLY POTEN-TIAL SOURCE OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PIC-TURE TUBE. HOWEVER, THIS TUBE DOES NOT EMIT X-RAYS WHENTHE HIGH VOLTAGE IS AT

37、THE FACTORY SPECIFIED LEVEL. THE PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC. OPERA-TION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PIC-TURE TUBE OR HIGH VOLTAGE SUPPLY AND, UNDER CERTAIN CIR-CUMSTANCES, MAY PRODUCE RADIATION IN EXCESS OF DESIR-ABLE LEVELS.2. ONLY FACTORY SPECIFIED C.R.T. A

38、NODE CONNECTORS MUST BEUSED. DEGAUSSING SHIELDS ALSO SERVE AS AN X-RAY SHIELD INCOLOR SETS, ALWAYS RE-INSTALL THEM.3. IT IS ESSNTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE ANACCURATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRA-TION OF THE METER SHOULD BE CHECKED PERIODICALLYAGAINST A REFERENCE STAND

39、ARD, SUCH AS THE ONE AVAILABLEAT YOUR DISTRIBUTOR.4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLYTHERE IS NO POSSIBILITY OF AN X-RADIATION PROBLEM. EVERYTIME A COLOR CHASSIS IS SERVICED. THE BRIGHTNESS SHOULDBE RUN UP AND DOWN WHILE MONITORING THE HIGH VOLTAGEWITH A METER TO BE CERTAIN THAT

40、 THE HIGH VOLTAGE DOESNOT EXCEED THE SPECIFIED VALUE AND THAT IT IS REGULATINGCORRECTLY. WE SUGGEST THAT YOU AND YOUR SERVICE ORGA-NIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGU-LATION IS ALWAYS CHECKED AS A STANDARD SERVICING PROCE-DURE AND THAT THE HIGH VOLTAGE READING BE RECORDED ONEACH CUS

41、TOMERS INVOICE.5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS INA PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE,AVOID BEING UNNECESSARILY CLOSE TO THE PICTURE TUBE ANDTHE HIGH VOLTAGE SUPPLY. DO NOT OPERATE THE PRODUCTLONGER THAN IT IS NECESSARY TO LOCATE THE CAUSE OF EXCES-SIVE VOLTAGE.6.

42、REFER TO HV. B+ AND SHUTDOWN ADJUSTMENT PROCEDURES DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS(WHERE USED).SUBJECT: IMPLOSION1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTE-GRAL IMPLOSION PROTECTION SYSTEM, BUT CARE SHOULD BETAKEN TO AVOID DAMAGE DURING INSTALLATION, AVOIDSCRATC

43、HING THE TUBE. IF SCRATCHED REPLACE IT.2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES.SUBJECT : TIPS ON PROPER INSTALLATION1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS, CUBBY-HOLE OR CLOSELY FITTING SHELF SPACE, OVER OR CLOSE TOHEAT DUCT, OR IN THE PATH OF HEATED AIR FLOW.2. AVOID CONDITION

44、S OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIOINSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIA-TORS WHERE STEAM LEAKAGE IS A FACTOR, ETC.3. AVOID PLACEMENT WHERE DRAPERIES MAY OBSTRUCT REARVENTING. THE CUSTOMER SHOULD ALSO AVOID THE USE OF DEC-ORATIVE SCARVES OR OTHER COVERINGS WHICH MIGHTOBSTRUCT V

45、ENTILATION.4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMER-CIAL MOUNTING KIT, MUST FOLLOW THE FACTORY APPROVED MOUNTING INSTRUCTIONS. A PRODUCT MOUNTED TO A SHELF ORPLATFORM MUST RETAIN ITS ORIGINAL FEET (OR THE EQUIVALENTTHICKNESS IN SPACERS) TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM. B

46、OLTS OR SCREWS USED FOR FASTENERSMUST NOT TOUCH ANY PARTS OR WIRING. PERFORM LEAKAGETEST ON CUSTOMIZED INSTALLATIONS.5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ONSLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT ISPROPERLY SECURED.6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE O

47、N ITSMOUNTING TO THE CART. CAUTION THE CUSTOMER ON THE HAZ-ARDS OF TRYING TO ROLL A CART WITH SMALL CASTERS ACROSSTHRESHOLDS OR DEEP PILE CARPETS.7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STANDWHICH HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES, INC. FOR USE WITH THEIR SPECIFIC MODEL OF T

48、ELEVISION RECEIVER OR GENERICALLY APPROVED FOR USE WITH T.V.S OFTHE SAME OR LARGER SCREEN SIZE.8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS. EXPLAIN THAT A FOREST OF EXTENSIONS SPROUTING FROM A SIN-GLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TOHOME AND FAMILY.PRODUCT SAFETY SERVICING G

49、UIDELINES FOR VIDEO PRODUCTSA.C. VOLTMETERGOOD EARTH GROUNDSUCH AS THE WATERPIPE. CONDUIT. ETCPLACE THIS PROBEON EACH EXPOSEDMETAL PART1-4SERVICING PRECAUTIONSCAUTION : Before servicing the DVD covered by this servicedata and its supplements and ADDENDUMS, read and fol-low the SAFETY PRECAUTIONS. NO

50、TE : if unforeseen cir-cumstances create conflict between the following servicingprecautions and any of the safety precautions in this publi-cations, always follow the safety precautions.Remember Safety First:General Servicing Precautions1. Always unplug the DVD AC power cord from the ACpower source