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LG 47LF65 Service Manual
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LG 47LF65 Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : LD75A
MODEL : 47LF65
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com
47LF65-ZC

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Summary of Contents for LG 47LF65

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : LD75A MODEL : 47LF65 47LF65-ZC CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 SAFETY PRECAUTIONS ................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............19 TROUBLE SHOOTING ................23 BLOCK DIAGRAM...................31 EXPLODED VIEW .................. 33 EXPLODED VIEW PARTS LIST ..............34 REPLACEMENT PARTS LIST ............... 35 SVC. SHEET ....................- 2 -...

  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards.

  • Page 4: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service unit under test. manual and its supplements and addenda, read and follow the 2. After removing an electrical assembly equipped with ES SAFETY PRECAUTIONS on page 3 of this publication. devices, place the assembly on a conductive surface such as NOTE: If unforeseen circumstances create conflict between the aluminum foil, to prevent electrostatic charge buildup or...
  • Page 5 IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through Circuit Board Foil Repair which the IC leads are inserted and then bent flat against the Excessive heat applied to the copper foil of any printed circuit circuit foil. When holes are the slotted type, the following technique board will weaken the adhesive that bonds the foil to the circuit should be used to remove and replace the IC.

  • Page 6: Specification

    47/42/37 inch Wide Color Display Module Aspect Ratio 16:9 LCD Module 37LB5DF (37LF65): LC370WU1-SL01 42LB5DF (42LF65): LC420WU2-SLB1 47LB5DF (47LF65): LC470WU1-SLB2 37LY3DF (37LY95): LC370WU1-SL01 42LY3DF (42LY95): LC420WU2-SLC1 47LY3DF (47LY95): LC470WU4-SLC1 Operating Environment 1) Temp. : 0 ~ 40 deg 2) Humidity : 10 ~ 90%...
  • Page 7 5. Chroma & Brightness 5-1. FHD Module-47LB5DF (47LF65) Item Unit Measurement Result Remark Viewing Angle Viewing <CR>10> Angle<CR>10> White average - 100IRE Full White Pattern(255gray) 47LF65 cd/m brightness - Picture : Dynamic (Cool) - 100IRE Full White Pattern(255gray) Brightness uniformity...
  • Page 8 5-2. FHD Module-42LB5DF (42LF65) Item Unit Measurement Result Remark Viewing Angle Viewing Angle <CR>10> <CR>10> White average 42LF65 cd/m - 100IRE Full White Pattern (255gray) brightness - Picture : Dynamic (Cool) Brightness uniformity cd/m - 100IRE Full White Pattern (255gray) - Picture : Dynamic (Cool) Color White...
  • Page 9 5-3. FHD Module-37LB5DF (37LF65) Item Unit Measurement Result Remark Viewing Angle Viewing Angle <CR>10> <CR>10> White average 37LF65 cd/m - 100IRE Full White Pattern (255gray) brightness - Picture : Dynamic (Cool) Brightness uniformity cd/m - 100IRE Full White Pattern (255gray) - Picture : Dynamic (Cool) Color White...
  • Page 10 5-3. FHD Module-47LY3DF (47LY95) Item Unit Measurement Result Remark Viewing Angle Viewing Angle <CR>10> <CR>10> White average 47LY95 cd/m -100IRE Full White Pattern (255 gray) brightness - Picture : Dynamic (Cool) Brightness uniformity cd/m - 100IRE Full White Pattern(255 gray) - Picture : Dynamic (Cool) Color White...
  • Page 11 5-3. FHD Module-42LY3DF (42LY95) Item Unit Measurement Result Remark Viewing Angle Viewing Angle <CR>10> <CR>10> White average 42LY95 cd/m -100IRE Full White Pattern (255 gray) brightness - Picture : Dynamic (Cool) Brightness uniformity1.3 cd/m -100IRE Full White Pattern (255 gray) - Picture : Dynamic (Cool) Color Coordinate White...
  • Page 12 5-3. FHD Module-37LY3DF (37LY95) Item Unit Measurement Result Remark Viewing Angle Viewing Angle <CR>10> <CR>10> White average 37LY95 cd/m - 100IRE Full White Pattern(255 gray) brightness - Picture : Dynamic (Cool) Brightness uniformity cd/m - 100IRE Full White Pattern (255gray) - Picture : Dynamic (Cool) Color White...
  • Page 13 6. Component Video Input (Y, P Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed 720*480 15.73 59.94 13.500 SDTV, DVD 480I(525I) 720*480 15.75 60.00 13.514 SDTV, DVD 480I(525I) 720*576 15.625 50.00 13.500 SDTV, DVD 576I(625I) 720*480 31.47 59.94 27.000 SDTV 480P 720*480 31.50 60.00 27.027...
  • Page 14 7EH : No Extension EDID Block 7FH : Check sum Model Name : 47LB5DF-ZC (47LF65-ZC) / Check Sum : FE Model Name : 42LB5DF-ZC (42LF65-ZC) / Check Sum : 03 Model Name : 37LB5DF-ZC (37LF65-ZC) / Check Sum : FF...
  • Page 15 9FH : Vendor specification Block (10 : HDMI1, 20 : HDMI2) FFH : Check sum valid Model Name : 47LB5DF-ZC (47LF65-ZC) / Check Sum HDMI1 : D71D , HDMI2 : D70D Model Name : 42LB5DF-ZC (42LF65-ZC) / Check Sum HDMI1 : DC1D , HDMI2 : DC0D...
  • Page 16 9. MODULE 9-1. General specifications-47LB5DF (47LF65): LC470WU1-SLB2 Item Unit Remark Display area 1039.68 (H) * 584.82(V) Outline dimension 1096 (W) x 640 (H) x 48.1 (D) with inverter Number of Pixels 1920 (H) x 1080(V) 1Pixel=3RGB Cells Cell pitch 541.5um (H) x 541.5um (V)
  • Page 17 1Pixel=3RGB Cells Cell pitch 484.5um (H) x 484.5um (V) G cell Color arrangement RGB stripe arrangement Weight(net) Net 1EA 10. Mechanical specification 10-1. 47LB5DF (47LF65) Item Content Remark Product Width (W) Length (D) Height (H) Dimension Before Packing 1144.5 825.6...
  • Page 18 10-5. 42LY3DF (42LY95) Item Content Remark Product Width (W) Length (D) Height (H) Dimension Before Packing 1113.3 294.3 722.5 With Stand After Packing 1191 With Stand Product Only SET 30.1Kg With Stand Weight With BOX 34.6Kg 10-6. 37LY3DF (37LY95) Item Content Remark Product...

  • Page 19: Adjustment Instruction

    This spec. sheet is applied to all of the LD75A chassis 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F manufactured at LG TV Plant all over the world. 00 00 FF FF FF FF FF FF 00 1E 6D Ex.) LD75A : 37/42/47LB5DF-ZC, 37/42/47LY3DF-ZA...
  • Page 20 2320 1701 4) Press the (Vol.+) key to operate the set, then it 42LF65 2324 1701 becomes automatically. 47LF65 2328 1701 5) After downloading complete, the ‘OK’ word 37LY95 2384 1701 appears. 6) Auto-RGB OK means the adjustment is completed.

  • Page 21: White Balance

    3) Press the IN-START key on R/C for adjustment. PC (for communication through RS-232C) -> UART Baud rate : 115200 bps * Connecting picture of the measuring instrument (On Automatic control ) Inside PATTERN is used when W/B is controlled. Connect to auto controller or push control R/C IN-START ->...
  • Page 22 5) When the R/G/B GAIN is 80 on OSD, it is the FULL DYNAMIC Range of the Module. In order to control white balance without the saturation of FULL DYNAMIC Range and DATA, one of R Gain / G Gain / B Gain should be kept on 80, and other two is controlled lowering from 80.

  • Page 23: Troubleshooting

    TROUBLESHOOTING 1. No power (1) Symptom 1) Doesn't minute discharge at module. 2) Non does not come in into the front LED. (2) Check follow Is plug in power cord? Plug in power cord Is connect the Line Connect cable. Filter and Power Board Cable? Is normal the...
  • Page 24 2. Protect mode (1) Symptom 1) After once shining, it does not discharge minutely from module. 2) The relay falls.(The sound is audible “Click”.) 3) It is converted with the color where the front LED is red from green. (2) Check follow Is output the normality Low/High Is normal the Power Replace Power Board.
  • Page 25 3. No Raster (1) Symptom 1) No OSD and image occur at screen. 2) It maintains the condition where the front LED is green (2) Check follow Is output the normality Does minute Replace the Power Is the inverter on? Low/High voltage except discharge board.
  • Page 26 4. In case of occur strange screen into specific mode 1) In case of does't display the OSD (1) Symptom 1) LED is green. 2) The minute discharge continuously becomes accomplished from module (2) Check follow Is normal the LVDS Is the LVDS cable connected well? Replace Power Board.
  • Page 27 2) In case of does't display the screen into specific mode (1) Symptom - The screen does not become the display from specific input mode (RF, AV, Component, RGB, DVI). (2) Check follow (1) Check the all input mode should become normality display. (1) Check the Video(Main)/Data(Sub), Video(Main)/Video(Sub) should become normality display from the PIP mode or DW mode.
  • Page 28 (4) In the case of becomes unusual display from side S-video/AV mode Is Video input of the Check the input source. AV Jack (P1400) normal? Is normal the Input voltage, Is normal the Replace IC IICCommunication and HV sync? CXA2069Q? Same as Block A (5) In the case of becomes unusual display from Component, RGB mode Is R,G,B input and...
  • Page 29 (7) In the case of becomes unusual display from SCART1 mode Is Video input Check the input source. of A/V jack normal? (J1200) Same as Block A (8) In the case of becomes unusual display from SCART2 mode Is Video input Check the input source.

  • Page 30: In Case Of No Sound

    5. In case of no sound (1) Symptom 1) LED is green. 2) Screen display but sound is not output (2) Check follow Is the speaker Set on speaker in All input (mode) On it men? menu. is no sound? Is the speaker Check the Speaker Cable normal?

  • Page 31: Block Diagram

    - 31 -...
  • Page 32 MEMO - 32 -...

  • Page 33: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All right reserved. LGE Internal Use Only - 33 - Only for training and service purposes...

  • Page 34: Exploded View Parts List

    Speaker,Tweeter, EN10D-6714 ND 10W 8OHM 82DB 0HZ 68 X 23 X 22.7 LUG KOREA TOPTONE EAJ35565901 LCD,Module-TFT, LC470WU1-SLB2 FULLHD 47INCH 1920X1080 550CD COLOR 72% 16/9 800:1(basic) DCR(1600:1) A-TW Pol. 12000K P7 LG PHILIPS LCD ABJ32083302 Cabinet Assembly, 47LB5DF-ZA LD75A 47" XG569 ACQ32083410 Cover Assembly, 47LB5DF-ZC LD75A 47"...

  • Page 35: Replacement Parts List

    0603B104K500CT 100nF 10% 50V X7R -5 3840TWL027F CardPRINTING WARRANTY LG EU/RUSSIA/ C1123 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -5 3840VA0024D CardPRINTING WARRANTY LG UK EXTENDE C1125 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -5 MBM30520909 CardPRINTING OTHERS LG 60PY3DF-ZA C C1128...
  • Page 36 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C129 0CK104CF56A 0603B104K160CT 100nF 10% 16V X7R -5 C1358 0CH2122K516 0805B122K500CT 1.2nF 10% 50V Y5P -3 C130 0CK104CF56A 0603B104K160CT 100nF 10% 16V X7R -5 C1359 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -5 C1300 0CK105DH56A...
  • Page 37 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1450 0CK104CF56A 0603B104K160CT 100nF 10% 16V X7R -5 C186 0CK104CF56A 0603B104K160CT 100nF 10% 16V X7R -5 C1451 0CK104CF56A 0603B104K160CT 100nF 10% 16V X7R -5 C187 0CK104CF56A 0603B104K160CT 100nF 10% 16V X7R -5 C1452 0CC150CK41A...
  • Page 38 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C415 0CK104CF56A 0603B104K160CT 100nF 10% 16V X7R -5 C635 0CK472CK56A 0603B472K500CT 4.7nF 10% 50V X7R -5 C429 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -5 C636 0CK103CK56A 0603B103K500CT 10nF 10% 50V X7R -55 C430 0CK104CK56A...
  • Page 39 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C750 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -5 C806 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -5 C751 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R -5 C807 0CK103CK56A 0603B103K500CT 10nF 10% 50V X7R -55 C752 0CK104CK56A...
  • Page 40 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C903 0CE476WF6DC MVK6.3TP16VC47M 47uF 20% 16V 80MA - D905 0DS226009AA KDS226 1.2V 85V 300MA 2A 4NSEC 150M C905 0CK103CK56A 0603B103K500CT 10nF 10% 50V X7R -55 D906 0DD100009AM EU1ZV(1) 200V 2.5V 10UA 15A 400NSEC C907...
  • Page 41 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION IC502 0IMCRSJ001B SC1565IST-2.5TR 2.2TO5V 2.5V 0W SOT L1403 6210TCE001G "Filter,BeadHH-1M3216-501JT 500OHM 3" IC503 0IPMGKE030A KIA78R05F 6TO12V 5V 8W DPAK R/TP 5P L1404 EAM37276902 "Filter,LCRLCF20P101-TM LPF(EMI) 100" IC504 0IPMGKE031A KIA78R33F 4TO10V 3.3V 8W DPAK R/TP...
  • Page 42 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L1307 0LCTO00019A "Inductor,Wire Wound,ChipD75C-646CY-" AR102 0RJ0472C687 RCA86TRJ47R0 47OHM 5% 1/16W 4 SMD R L600 0LCTA00003A "Inductor,Wire Wound,ChipLEMC3225T6R" AR103 0RJ0472C687 RCA86TRJ47R0 47OHM 5% 1/16W 4 SMD R L601 0LCTA00003A "Inductor,Wire Wound,ChipLEMC3225T6R"...
  • Page 43 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R103 0RJ2203D677 MCR03EZPJ224 220KOHM 5% 1/10W 1608 R1118 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W 1608 R/ R103 0RJ0472D677 MCR03EZPJ470 47OHM 5% 1/10W 1608 R/ R1119 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W 1608 R/ R103 0RH3301D622 MCR10EZHJ332 3.3KOHM 5% 1/8W 2012 R...
  • Page 44 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1214 0RJ0752D677 MCR03EZPJ750 75OHM 5% 1/10W 1608 R/ R1287 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2012 R/TP R1215 0RJ1001D477 MCR03EZPF102 1KOHM 1% 1/10W 1608 R/ R1288 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2012 R/TP R1216 0RJ1001D477...
  • Page 45 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1356 0RJ0122D677 MCR03EZPJ120 12OHM 5% 1/10W 1608 R/ R1456 0RJ1501D677 MCR03EZPJ152 1.5KOHM 5% 1/10W 1608 R1357 0RJ0122D677 MCR03EZPJ120 12OHM 5% 1/10W 1608 R/ R146 0RJ2701D677 MCR03EZPJ272 2.7KOHM 5% 1/10W 1608 R1358 0RJ0122D677 MCR03EZPJ120 12OHM 5% 1/10W 1608 R/...
  • Page 46 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1728 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W 1608 R/ R1792 0RJ0222C678 MCR01MZPJ220 22OHM 5% 1/16W 1005 R/ R1729 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W 1608 R/ R1793 0RJ0222C678 MCR01MZPJ220 22OHM 5% 1/16W 1005 R/ R173 0RJ0472D677...
  • Page 47 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R238 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W 1608 R R558 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W 1608 R R239 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W 1608 R R600 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W 1608 R/ R241 0RJ1000D677...
  • Page 48 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R678 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2012 R/TP R755 0RJ1002C678 MCR01MZPJ103 10KOHM 5% 1/16W 1005 R R679 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2012 R/TP R756 0RJ0222C678 MCR01MZPJ220 22OHM 5% 1/16W 1005 R/ R680 0RH0000D622...
  • Page 49 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R859 0RJ1000C678 MCR01MZPJ101 100OHM 5% 1/16W 1005 R 6631900133E "Harness,SingleLVDS FULL HD (JAE) FI" R860 0RJ1000C678 MCR01MZPJ101 100OHM 5% 1/16W 1005 R CA10 6631T20032B "Harness,SinglePHR-12P PHR-12P 600mM" R877 0RJ1000C678 MCR01MZPJ101 100OHM 5% 1/16W 1005 R...
  • Page 50 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 3918TKK038J Packing538*390 LB500J PCB 400-C17F Packing(1000X1050)CS771 DIGITAL 3918TKK040B Packing397*70 LB500J MAIN PCB(S) 3918TKK040A Packing542*70 MAIN PCB(B) 400-C02X "PackingCARTON(840*1200,SCQ466)" MFZ37705801 "PackingMOLD EPS 47LC4,5,7 Round Sta" MFZ37372401 PackingBOX DW 575 50 395 NO PRINTIN 3918TKK038P Packing1140*790 FOR L1515SL 3918TKK038V...
  • Page 51 SIi5100 Decoupling Capacitors R242 LDA[10] 1.2V 002:C3;002:G4 LD_A[10] DDR TERMINATION OPTIONs AR200 L102 1/16W C166 HH-1M3216-501 002:C3;002:G5 LD_A[3] LDA[3] 10uF LDA[2] 1.2VA 002:C3;002:G4 LD_A[2] 1.2V 002:C2;002:G4 LD_A[1] LDA[1] LDA[0] 002:C2;002:G4 LD_A[0] DDR Termination Power AR201 1/16W R201 2.5V 1V25 002:G3;002:J2 LD_D[0] 002:C3;002:H4 LD_A[7]...
  • Page 52 [POWER BLOCK] TDFC-G106P TU600 C612 C616 0.1uF 47uF 5V_TU 5.0V For only C.I. 3.3 volt % MUST BE PLACED NEAR IC100 IC600 GND_TU TPS2010ADR Over current protection can be operated IC504 5V_ANN_MNT 5.0V R652 KIA78R33F OUT4 TPS2010 IC507 OUT3 KIA78R05F GND_TU R653 OUT2...
  • Page 53 FOR LCD STAND_BY 1W 5V_HDMI_0 +5VST IC1002 +5VST R1018 R911-*1 AT24C02BN-10SU-1.8 R913-*1 R915-*1 R916-*1 R917-*1 R918-*1 R919-*1 R920-*1 C1007 0.1uF R915 KDS184 +5VST R1017 HDMI 5V Detection D1000 R1019 R923 R923-*1 R924-*1 R925-*1 R926-*1 R930-*1 R932-*1 R933-*1 R934-*1 R1039 R919 5V_HDMI_0 R1021 Q901...
  • Page 54 C1320 0.47uF TP1302 TP1306 TP1308 +9V_MSP4450 TP1304 TP1301 TP1303 TP1305 TP1307 +9V_MSP4450 C1341 L1403 3.3uF R1305 HH-1M3216-501 R1304 TP1435 L1302 HH-1M3216-501 TP1356 L1412 R1402 HB-1M2012-800JT ZD1300 RLZ8.2B-TE11 SCL_5V C1343 C1452 100uF +5V_MSP4450 15pF L1413 HB-1M2012-800JT SDA_5V SIDE_S_SW L1301 R1403 C1313 C1453 R1303 HH-1M3216-501...
  • Page 55 Apr., 2007 P/NO : MFL36631011 Printed in Korea...

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