LG-DVD3230N-cd-sm 电路图 维修手册.pdf

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1、Top View.4-1 Top View(without Tray Disc).4-1 Bottom View .4-1 1. Holder Clamp.4-2 1-1. Clamp Assembly Disc.4-2 1-1-1. Plate Clamp .4-2 1-1-2. Magnet Clamp .4-2 1-1-3. Clamp Upper.4-2 2. Tray Disc.4-2 3. Base Assembly Sled.4-3 3-1. Gear Assembly Feed.4-3 3-2. Gear Assembly Middle.4-3 3-3. Gear Assemb

2、ly Rack.4-3 4. Rubber Rear.4-3 5. Frame Assembly Up/Down.4-4 6. Belt Loading.4-4 7. Gear Pulley .4-4 8. Gear Loading.4-4 9. Guide Up/Down.4-4 10. PWB Assembly Loading.4-4 11. Base Main.4-4 1. Tools and Fixtures for SVC.4-5 2. Install Process.4-5 3. Adjustment Process.4-6 1. Deck Mechanism Exploded V

3、iew.4-7 CONTENTS SECTION 4 MECHANISM DECK MECHANISM PARTS LOCATIONS EXPLODED VIEW DECK MECHANISM ADJUSTMENT DECK MECHANISM DISASSEMBLY RadioFans.CN 收音机爱 好者资料库 4-1 DECK MECHANISM PARTS LOCATION Starting No. 1 1, 2 1, 2, 3 1, 2, 3, 4 1 1, 6 1, 2, 6 1, 2, 6, 8 1, 2, 6, 8, 9 1, 2, 7 1, 2, 7 1, 2 1, 2 ,1

4、3 1, 2, 13, 14 1, 2, 7, 12, 13, 14 1, 2, 13 1, 2, 7, 12, 13, 14, 15, 16, 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Holder Clamp Clamp Assembly Disc Plate Clamp Magnet Clamp Clamp Upper Tray Disc Base Assembly Sled Gear Assembly Feed Gear Middle Gear Assembly Rack Rubber Rear Frame Assembly Up/

5、Down Belt Loading Gear Pulley Gear Loading Guide Up/Down PWB Assembly Loading Base Main 2 Screws, 2 Locking Tabs 4 Screws, 1 Connector 1 Locking Tabs 1 Screw 1 Screw 1 Locking Tab 1 Locking Tab 1 Locking Tab 1 Hook 2Screw 2 Locking Tabs 4-1 4-1 4-1 4-1 4-1 4-2 4-3 4-3 4-3 4-3 4-3 4-4 4-4 4-4 4-4 4-4

6、 4-4 4-4 Bottom Bottom Procedure PartsFixing Type Fig- ure Disass embly Note When reassembling, perform the procedure in reverse order. The “Bottom” on Disassembly column of above Table indicates the part should be disassembled at the Bottom side. Top View (Without Tray) Bottom View Top View (With T

7、ray) RadioFans.CN 收音机爱 好者资料库 4-2 DECK MECHANISM DISASSEMBLY 1.Holder Clamp (Fig. 4-1) 1) Release 2 Screws(S1). 2) Unhook 2 Locking Tabs(L1). 3) Lift up the Holder Clamp and then separate it from the Base Main. 1-1. Clamp Assembly Disc 1) Place the Clamp Assembly Disc as Fig. (A) 2) Lift up the Clamp

8、 Assembly Disc in direction of arrow(A). 3) Separate the Clamp Assembly Disc from the Holder Clamp. 1-1-1. Plate Clamp 1) Turn the Plate Clamp to counterclockwise direction and then lift up the Plate Clamp. 1-1-2. Magnet Clamp 1-1-3.Clamp Upper 2. Tray Disc (Fig. 4-2) 1) Insert and push a Driver in

9、the emergency eject hole(A) at the right side, or put the Driver on the Lever(B) of the Gear Emergency and pull the Lever(B) in direction of arrow so that the Tray Disc is ejected about 1520mm. 2) Pull the Tray Disc until it is separated from the Base Main completely. BASE MAIN HOLDER CLAMP HOLDER C

10、LAMP CLAMP ASSEMBLY DISC HOLDER CLAMP PLATE CLAMP (S1) (S1) (A) (L1) (L1) (Fig. A) MAGNET CLAMP CLAMP UPPER (B) LEVER BOTTOM SIDE VIEW EMERGENCY EJECT HOLE (A) TRAY DISC BASE MAIN BASE MAIN Fig. 4-1Fig. 4-2 RadioFans.CN 收音机爱 好者资料库 4-3 DECK MECHANISM DISASSEMBLY (L2) (S2) (C1) (S2) (S2) (S2) (S3) GEA

11、R ASSEMBLY RACK PICK UP ASSEMBLY GENERAL GEAR MIDDLE GEAR ASSEMBLY FEED BASE PU(OUTSERT) RUBBER REAR GEAR ASSEMBLY FEED GEAR MIDDLE GAER ASSEMBLY RACK MOTOR ASSEMBLY SPINDLE PICK UP ASSEMBLY GENERAL MOTOR ASSEMBLY SPINDLE 3.Base Assembly Sled (Fig. 4-3) 1) Release 4 Screw(S2). 2) Disconnect the FFC

12、Connector(C1) 3-1. Gear Assembly Feed 1) Unhook the Locking Tab(L2) in direction of arrow. 3-2. Gear Middle 3-3. Gear Assembly Rack 1) Release the Scerw(S3) 4. Rubber Rear (Fig. 4-3) Fig. 4-3 4-4 DECK MECHANISM DISASSEMBLY (B) (S5) (L6) (L4) (L5) (A) (L3) (A) (L6) (H1) (C2) (L6) FIG. (B) GUIDE UP/DO

13、WN BASE MAIN BASE MAIN PWB ASSEMBLY LOADING GEAR LOADING BELT LOADING FRAME ASSEMBLY UP/DOWN GUIDE UP/DOWN GUIDE UP/DOWN GUIDE UP/DOWN (A) (B) (S4) FIG. (C) FIG. (A) (B) (C) GEAR PULLEY Fig. 4-4 5. Frame Assembly Up/Down Put the Base Main face down(Bottom Side) 1) Release the Screw(S4) 2) Unlock the

14、 Locking Tab(L3) in direction of arrow and then lift up the Frame Assembly Up/Down to separate it from the Base Main. When reassembling move the Guide Up/Down in direction of arrow(C) until it is positioned as Fig.(C). When reassembling insert (A) portion of the Frame Assembly Up/Down in the (B) por

15、tion of the Guide Up/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) and then separate the Gear Pulley from the Base Main. 8. Gear Loading (Fig. 4-4) 9. Guide Up/Down

16、(Fig. 4-4) 1) Move the Guide Up/Down in direction of arrow(A) as Fig.(A) 2) Push the Locking Tab(L5) down and then lift up the Guide 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 the Locking Tab

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

18、in. 11. Base Main(Fig. 4-4) Note Note Note Note Note 4-5 DECK MECHANISM ADJUSTMENT 1. Tools and Fixtures for SVC For SVC Program Down-Load For T-Skew and R-Skew Adjustment 2. Install Process 1. 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

19、Connector on DVD Set(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.

20、10) 10. Click the Down-load 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)

21、 Fig.5. L-Wrench(3mm)Fig.6. RCA JackFig.7. Connecting Method RED GREEN RED Rom Size File Help 16MBit 6M Bit LPT1 Manual953826Bytes md _bas_ntsc.bin LPT2 Port FILE NAME OPEN DOWN LOAD CLOSE Fig.8. FFC Cable Connecting Fig.9. Jig Board LED ConditionFig.10. Adjusting Program File Open M E M O 4-6 DECK

22、MECHANISM ADJUSTMENT 3. Adjustment Procedure 1. Insert Disc(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 has Minimum rate with L-wrench (3mm). 4. Adjust T-Skew Adjusting Point until the Error rate has M

23、inimum rate. 5. Repeat No. 3, 4 adjusting procedure until the Error rate have Minimum rate. 6. Error rate; SVC-3561 Disc=below 30 and TDV-533 Disc=below 100. If not, Please confirm Play ability on screen. # You can watch the screen when pressing the Stop key after the Adjusting is finished, Then per

24、form Play and Scan/Skip operation at Chapter1 and Chapter16 and confirm screen condition, normal or abnormal. Please obtain these software for Adjusting through our Global Cyber Service Center(GCSC). The location is CONNECT A 1500 OHM 10 WATT RESIS- TOR, PARALLELED BY A .15 MFD. 150.V A.C TYPE CAPAC

25、ITOR BETWEEN 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. PLUG AND REPEAT A.C. VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC PART. V

26、OLTAGE MEASURED MUST NOT EXCEED 75 VOLTS R.M.S. THIS CORRESPONDS TO 0.5 MILLIAMP A.C ANY VALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY. SUBJECT: GRAPHIC SYMBOLS THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED

27、TO ALERT THE SERVICE 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 TO THE PRESENCE OF IMPORTANT SAFETY INFORM

28、ATION IN SERVICE LITERATURE. SUBJECT : X-RADIATION 1. 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 WHEN THE HIGH VOLTAGE

29、IS AT 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 SPECIFI

30、ED C.R.T. ANODE CONNECTORS MUST BE USED. DEGAUSSING SHIELDS ALSO SERVE AS AN X-RAY SHIELD IN COLOR SETS, ALWAYS RE-INSTALL THEM. 3. IT IS ESSNTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN ACCURATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRA- TION OF THE METER SHOULD BE CHECKED PERIODICALLY AGAINST

31、A REFERENCE STANDARD, SUCH AS THE ONE AVAILABLE AT YOUR DISTRIBUTOR. 4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLY THERE IS NO POSSIBILITY OF AN X-RADIATION PROBLEM. EVERY TIME A COLOR CHASSIS IS SERVICED. THE BRIGHTNESS SHOULD BE RUN UP AND DOWN WHILE MONITORING THE HIGH VOLTAGE WITH A M

32、ETER TO BE CERTAIN THAT THE HIGH VOLTAGE DOES NOT EXCEED THE SPECIFIED VALUE AND THAT IT IS REGULATING CORRECTLY. 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 RE

33、ADING BE RECORDED ON EACH CUSTOMERS INVOICE. 5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN A PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE, AVOID BEING UNNECESSARILY CLOSE TO THE PICTURE TUBE AND THE HIGH VOLTAGE SUPPLY. DO NOT OPERATE THE PRODUCT LONGER THAN IT IS NECESSARY TO LOCATE T

34、HE CAUSE OF EXCES- SIVE VOLTAGE. 6. REFER TO HV. B+ AND SHUTDOWN ADJUSTMENT PROCEDURES DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS (WHERE USED). SUBJECT: IMPLOSION 1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTE- GRAL IMPLOSION PROTECTION SYSTEM, BUT CARE SHOULD BE TAKEN TO AVOI

35、D DAMAGE DURING INSTALLATION, AVOID SCRATCHING THE TUBE. IF SCRATCHED REPLACE IT. 2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES. SUBJECT : TIPS ON PROPER INSTALLATION 1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS, CUBBY- HOLE OR CLOSELY FITTING SHELF SPACE, OVER OR CLOSE TO HEAT DUCT, OR IN

36、 THE PATH OF HEATED AIR FLOW. 2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIO INSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIA- TORS WHERE STEAM LEAKAGE IS A FACTOR, ETC. 3. AVOID PLACEMENT WHERE DRAPERIES MAY OBSTRUCT REAR VENTING. THE CUSTOMER SHOULD ALSO AVOID THE USE OF DEC- ORA

37、TIVE SCARVES OR OTHER COVERINGS WHICH MIGHT OBSTRUCT VENTILATION. 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 OR PLATFORM MUST RETAIN ITS ORIGINAL FEET (OR THE EQUIVALENT THICKNESS IN

38、SPACERS) TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM. BOLTS OR SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR WIRING. PERFORM LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS. 5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON SLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT IS PROPER

39、LY SECURED. 6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS MOUNTING TO THE CART. CAUTION THE CUSTOMER ON THE HAZ- ARDS OF TRYING TO ROLL A CART WITH SMALL CASTERS ACROSS THRESHOLDS OR DEEP PILE CARPETS. 7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND WHICH HAS NOT BEEN LISTED BY U

40、NDERWRITERS LABORATORIES, INC. FOR USE WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR GENERICALLY APPROVED FOR USE WITH T.V.S OF THE 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

41、 TO DISASTROUS CONSEQUENCES TO HOME AND FAMILY. PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS A.C. VOLTMETER GOOD EARTH GROUND SUCH AS THE WATER PIPE. CONDUIT. ETC PLACE THIS PROBE ON EACH EXPOSED METAL PART 1-4 SERVICING PRECAUTIONS CAUTION : Before servicing the DVD covered by this servic

42、e data and its supplements and ADDENDUMS, read and fol- low the SAFETY PRECAUTIONS. NOTE : if unforeseen cir- cumstances create conflict between the following servicing precautions and any of the safety precautions in this publi- cations, always follow the safety precautions. Remember Safety First:

43、General Servicing Precautions 1. Always unplug the DVD AC power cord from the AC power source before: (1)Removing or reinstalling any component, circuit board, module, or any other assembly. (2)Disconnection or reconnecting any internal electrical plug or other electrical connection. (3)Connecting a

44、 test substitute in parallel with an elec- trolytic capacitor. Caution : A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard. 2. Do not spray chemicals on or near this DVD or any of its assemblies. 3. Unless specified otherwise in

45、 this service data, clean electrical 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, lubrication of contacts is not required. 4. Do not defeat any pl

46、ug/socket B+ voltage interlocks with whitch instruments covered by this service manual might be equipped. 5. Do not apply AC power to this DVD and/or any of its electrical assemblies unless all solid-state device heat sinks are cerrectly installed. 6. Always connect test instrument ground lead to th

47、e appropriate ground before connection the test instrument positive lead. Always remove the test instrument ground lead last. Insulation Checking Procedure Disconnect 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 resis- tance between each blade of the attachment plug and acces- sible conductive parts (Note 1) should be more than 1M- ohm. Note 1 : Acces