LG 50UK6700PVD/YVD

Все сервис мануалы для телевизоров LG: http://webos-forums.ru/topic3291.html CONFIDENTIAL LED TV SERVICE MANUAL CHASSIS : UB83Q MODEL : 50UK6700PVD / YVD 50UK6540PTD CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL70425803 (1803-REV00) Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.

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CONTENTS CONTENTS ............................................................................................... 2 SAFETY PRECAUTIONS ......................................................................... 3 SERVICING PRECAUTIONS .................................................................... 4 SPECIFICATION ....................................................................................... 6 SOFTWARE UPDATE ............................................................................. 10 BLOCK DIAGRAM .................................................................................. 11 EXPLODED VIEW ................................................................................... 23 DISASSEMBLY GUIDE .......................................................................... 24 TROUBLE SHOOTING GUIDE ................................................. APPENDIX -2- Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

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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 Exploded View. 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. Do not modify the original design without permission of manufacturer. General Guidance Leakage Current Hot Check (See below Figure) Plug the AC cord directly into the AC outlet. An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC Do not use a line Isolation Transformer during this check. power line. Use a transformer of adequate power rating as this Connect 1.5 K / 10 watt resistor in parallel with a 0.15 uF capacitor protects the technician from accidents resulting in personal injury between a known good earth ground (Water Pipe, Conduit, etc.) from electrical shocks. and the exposed metallic parts. Measure the AC voltage across the resistor using AC voltmeter It will also protect the receiver and it's components from being with 1000 ohms/volt or more sensitivity. damaged by accidental shorts of the circuitry that may be Reverse plug the AC cord into the AC outlet and repeat AC voltage inadvertently introduced during the service operation. measurements for each exposed metallic part. Any voltage measured must not exceed 0.75 volt RMS which is corresponds to If any fuse (or Fusible Resistor) in this TV receiver is blown, 0.5 mA. replace it with the specified. In case any measurement is out of the limits specified, there is possibility of shock hazard and the set must be checked and When replacing a high wattage resistor (Oxide Metal Film Resistor, repaired before it is returned to the customer. over 1 W), keep the resistor 10 mm away from PCB. Leakage Current Hot Check circuit Keep wires away from high voltage or high temperature parts. Before returning the receiver to the customer, always perform an AC leakage current check on the exposed metallic parts of the cabinet, such as antennas, terminals, etc., to be sure the set is safe to operate without damage of electrical shock. Leakage Current Cold Check(Antenna Cold Check) With the instrument AC plug removed from AC source, connect an electrical jumper across the two AC plug prongs. Place the AC switch in the on position, connect one lead of ohm-meter to the AC plug prongs tied together and touch other ohm-meter lead in turn to each exposed metallic parts such as antenna terminals, phone jacks, etc. If the exposed metallic part has a return path to the chassis, the measured resistance should be between 1 MΩ and 5.2 MΩ. When the exposed metal has no return path to the chassis the reading must be infinite. An other abnormality exists that must be corrected before the receiver is returned to the customer. -3- Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

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SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service 2. After removing an electrical assembly equipped with ES manual and its supplements and addenda, read and follow the devices, place the assembly on a conductive surface such as SAFETY PRECAUTIONS on page 3 of this publication. aluminum foil, to prevent electrostatic charge buildup or expo- NOTE: If unforeseen circumstances create conflict between the sure of the assembly. following servicing precautions and any of the safety precautions 3. Use only a grounded-tip soldering iron to solder or unsolder on page 3 of this publication, always follow the safety precau- ES devices. tions. Remember: Safety First. 4. Use only an anti-static type solder removal device. Some sol- der removal devices not classified as “anti-static” can generate General Servicing Precautions electrical charges sufficient to damage ES devices. 1. Always unplug the receiver AC power cord from the AC power 5. Do not use freon-propelled chemicals. These can generate source before; electrical charges sufficient to damage ES devices. a. Removing or reinstalling any component, circuit board 6. Do not remove a replacement ES device from its protective module or any other receiver assembly. package until immediately before you are ready to install it. b. Disconnecting or reconnecting any receiver electrical plug (Most replacement ES devices are packaged with leads elec- or other electrical connection. trically shorted together by conductive foam, aluminum foil or c. Connecting a test substitute in parallel with an electrolytic comparable conductive material). capacitor in the receiver. 7. Immediately before removing the protective material from the CAUTION: A wrong part substitution or incorrect polarity leads of a replacement ES device, touch the protective mate- installation of electrolytic capacitors may result in an explo- rial to the chassis or circuit assembly into which the device will sion hazard. be installed. 2. Test high voltage only by measuring it with an appropriate CAUTION: Be sure no power is applied to the chassis or cir- high voltage meter or other voltage measuring device (DVM, cuit, and observe all other safety precautions. FETVOM, etc) equipped with a suitable high voltage probe. 8. Minimize bodily motions when handling unpackaged replace- Do not test high voltage by "drawing an arc". ment ES devices. (Otherwise harmless motion such as the 3. Do not spray chemicals on or near this receiver or any of its brushing together of your clothes fabric or the lifting of your assemblies. foot from a carpeted floor can generate static electricity suf- 4. Unless specified otherwise in this service manual, clean ficient to damage an ES device.) electrical contacts only by applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable General Soldering Guidelines non-abrasive applicator; 10 % (by volume) Acetone and 90 % 1. Use a grounded-tip, low-wattage soldering iron and appropri- (by volume) isopropyl alcohol (90 % - 99 % strength) ate tip size and shape that will maintain tip temperature within CAUTION: This is a flammable mixture. the range or 500 °F to 600 °F. Unless specified otherwise in this service manual, lubrication 2. Use an appropriate gauge of RMA resin-core solder composed of contacts in not required. of 60 parts tin/40 parts lead. 5. Do not defeat any plug/socket B+ voltage interlocks with which 3. Keep the soldering iron tip clean and well tinned. receivers covered by this service manual might be equipped. 4. Thoroughly clean the surfaces to be soldered. Use a mall wire- 6. Do not apply AC power to this instrument and/or any of its bristle (0.5 inch, or 1.25 cm) brush with a metal handle. electrical assemblies unless all solid-state device heat sinks Do not use freon-propelled spray-on cleaners. are correctly installed. 5. U se the following unsoldering technique 7. Always connect the test receiver ground lead to the receiver a. Allow the soldering iron tip to reach normal temperature. chassis ground before connecting the test receiver positive (500 °F to 600 °F) lead. b. Heat the component lead until the solder melts. Always remove the test receiver ground lead last. c. Q  uickly draw the melted solder with an anti-static, suction- 8. Use with this receiver only the test fixtures specified in this type solder removal device or with solder braid. service manual. CAUTION: Work quickly to avoid overheating the circuit CAUTION: Do not connect the test fixture ground strap to any board printed foil. heat sink in this receiver. 6. Use the following soldering technique. a. Allow the soldering iron tip to reach a normal temperature Electrostatically Sensitive (ES) Devices (500 °F to 600 °F) Some semiconductor (solid-state) devices can be damaged eas- b. First, hold the soldering iron tip and solder the strand ily by static electricity. Such components commonly are called against the component lead until the solder melts. Electrostatically Sensitive (ES) Devices. Examples of typical ES c. Q uickly move the soldering iron tip to the junction of the devices are integrated circuits and some field-effect transistors component lead and the printed circuit foil, and hold it there and semiconductor “chip” components. The following techniques only until the solder flows onto and around both the compo- should be used to help reduce the incidence of component dam- nent lead and the foil. age caused by static by static electricity. CAUTION: Work quickly to avoid overheating the circuit 1. Immediately before handling any semiconductor component or board printed foil. semiconductor-equipped assembly, drain off any electrostatic d. Closely inspect the solder area and remove any excess or charge on your body by touching a known earth ground. Alter- splashed solder with a small wire-bristle brush. natively, obtain and wear a commercially available discharg- ing wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the unit under test. -4- Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

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IC Remove/Replacement 3. Solder the connections. Some chassis circuit boards have slotted holes (oblong) through CAUTION: Maintain original spacing between the replaced which the IC leads are inserted and then bent flat against the cir- component and adjacent components and the circuit board to cuit foil. When holes are the slotted type, the following technique prevent excessive component temperatures. should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique Circuit Board Foil Repair as outlined in paragraphs 5 and 6 above. Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit Removal board causing the foil to separate from or "lift-off" the board. The 1. Desolder and straighten each IC lead in one operation by following guidelines and procedures should be followed when- gently prying up on the lead with the soldering iron tip as the ever this condition is encountered. solder melts. 2. Draw away the melted solder with an anti-static suction-type At IC Connections solder removal device (or with solder braid) before removing To repair a defective copper pattern at IC connections use the the IC. following procedure to install a jumper wire on the copper pattern Replacement side of the circuit board. (Use this technique only on IC connec- 1. Carefully insert the replacement IC in the circuit board. tions). 2. Carefully bend each IC lead against the circuit foil pad and solder it. 1. Carefully remove the damaged copper pattern with a sharp 3. Clean the soldered areas with a small wire-bristle brush. knife. (Remove only as much copper as absolutely necessary). (It is not necessary to reapply acrylic coating to the areas). 2. carefully scratch away the solder resist and acrylic coating (if used) from the end of the remaining copper pattern. "Small-Signal" Discrete Transistor 3. Bend a small "U" in one end of a small gauge jumper wire and Removal/Replacement carefully crimp it around the IC pin. Solder the IC connection. 1. Remove the defective transistor by clipping its leads as close 4. Route the jumper wire along the path of the out-away copper as possible to the component body. pattern and let it overlap the previously scraped end of the 2. Bend into a "U" shape the end of each of three leads remain- good copper pattern. Solder the overlapped area and clip off ing on the circuit board. any excess jumper wire. 3. Bend into a "U" shape the replacement transistor leads. 4. Connect the replacement transistor leads to the corresponding At Other Connections leads extending from the circuit board and crimp the "U" with Use the following technique to repair the defective copper pattern long nose pliers to insure metal to metal contact then solder at connections other than IC Pins. This technique involves the each connection. installation of a jumper wire on the component side of the circuit board. Power Output, Transistor Device Removal/Replacement 1. Remove the defective copper pattern with a sharp knife. 1. Heat and remove all solder from around the transistor leads. Remove at least 1/4 inch of copper, to ensure that a hazardous 2. Remove the heat sink mounting screw (if so equipped). condition will not exist if the jumper wire opens. 3. Carefully remove the transistor from the heat sink of the circuit 2. Trace along the copper pattern from both sides of the pattern board. break and locate the nearest component that is directly con- 4. Insert new transistor in the circuit board. nected to the affected copper pattern. 5. Solder each transistor lead, and clip off excess lead. 3. C onnect insulated 20-gauge jumper wire from the lead of the 6. Replace heat sink. nearest component on one side of the pattern break to the lead of the nearest component on the other side. Diode Removal/Replacement Carefully crimp and solder the connections. 1. Remove defective diode by clipping its leads as close as pos- CAUTION: Be sure the insulated jumper wire is dressed so the sible to diode body. it does not touch components or sharp edges. 2. Bend the two remaining leads perpendicular y to the circuit board. 3. Observing diode polarity, wrap each lead of the new diode around the corresponding lead on the circuit board. 4. Securely crimp each connection and solder it. 5. Inspect (on the circuit board copper side) the solder joints of the two "original" leads. If they are not shiny, reheat them and if necessary, apply additional solder. Fuse and Conventional Resistor Removal/Replacement 1. Clip each fuse or resistor lead at top of the circuit board hollow stake. 2. Securely crimp the leads of replacement component around notch at stake top. -5- Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

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SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range 3. Test method This specification is applied to the LED TV used UB83Q (1) Performance: LGE TV test method followed chassis. (2) Demanded other specification - Safety : CE, IEC specification - EMC : CE, IEC specification - Wireless : Wireless HD Specification (Option) 2. Requirement for Test Each part is tested as below without special notice (1) Temperature: 25 °C ± 5 °C(77 °F ± 9 °F), CST: 40 °C ± 5 °C (2) Relative Humidity: 65 % ± 10 % (3) Power Voltage : Standard input voltage (AC 100-240 V~, 50/60 Hz) * Standard Voltage of each products is marked by models. (4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM. (5) The receiver must be operated for about 20 minutes prior to the adjustment. 4. Model General Specification No. Item Specification Remarks 1 Market Oceania, Asia, Middle East, Africa (1) Digital TV : DVB-T/T2, DVB-C, DVB-S/S2 (2) Analogue TV 2 Television system PAL B/B, PAL B/G, PAL D/K, PAL-I, SECAM B/G, SECAM D/K, NTSC-M ATV & DVB-T/T2 : 3,000EA, 3 Channel Storage DVB-S/S2 : 6,000EA ► DVB-T - Guard Interval(Bitrate_Mbit/s): 1/4, 1/8, 1/16, 1/32 - Modulation : Code Rate QPSK : 1/2, 2/3, 3/4, 5/6, 7/8 16-QAM : 1/2, 2/3, 3/4, 5/6, 7/8 64-QAM : 1/2, 2/3, 3/4, 5/6, 7/8 ► DVB-T2 - Guard Interval(Bitrate_Mbit/s) 1/4, 1/8, 1/16, 1/32, 1/128, 19/128, 19/256, - Modulation : Code Rate Analog : Upper Heterodyne QPSK : 1/2, 2/5, 2/3, 3/4, 5/6 Digital : COFDM(DVB-T) Only DVB-T Model 16-QAM : 1/2, 2/5, 2/3, 3/4, 5/6 4 Receiving system Digital : COFDM(DVB-T/T2) Only DVB-T2 Model 64-QAM : 1/2, 2/5, 2/3, 3/4, 5/6 Digital : QAM 256-QAM : 1/2, 2/5, 2/3, 3/4, 5/6 ► DVB-C - Symbolrate : 4.0Msymbols/s to 7.2Msymbols/s - Modulation : 16QAM, 64-QAM, 128-QAM and 256-QAM ► DVB-S/S2 - Symbolrate DVB-S2 (8PSK / QPSK) : 2 ~ 45Msymbol/s DVB-S (QPSK) : 2 ~ 45Msymbol/s - Viterbi DVB-S mode : 1/2, 2/3, 3/4, 5/6, 7/8 DVB-S2 mode: 1/2, 2/3, 3/4, 3/5, 4/5, 5/6, 8/9, 9/10 5 Video Input RCA PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC, PAL60 6 Component Input Y/Pb/Pr Antenna, AV, Component, HDMI1(6G), HDMI2(3G), 7 Head phone out HDMI3(3G), USB1, USB2, USB3 8 HDMI Input HDMI1-DTV,HDMI2-DTV, HDMI3-DTV PC(HDMI Ver. 1.4), Support HDCP 9 Audio Input DVI Audio, Component, AV 10 SPDIF out SPDIF out 11 USB Input For My Media(Movie/Photo/Music List) or For SVC 12 Ethernet Connect(1EA) Ethernet Connect -6- Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

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5. External Input Support Format 5.1. CVBS input No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed Remarks 1 720*480i 15.73 59.94 13.50 SDTV, DVD 480I(525I) NTSC-M 2 720*480i 15.73 60.00 13.51 SDTV, DVD 480I(525I) NTSC-M 3 720*576i 15.63 50.00 13.50 SDTV, DVD 576I(625I) 50Hz PAL-BDGHI 5.2. Component input(Y, CB/PB, CR/PR) No. Resolution H-freq(kHz) V-freq(Hz) Pixel clock(MHz) Proposed 1 720*480i 15.73 59.94 13.50 SDTV, DVD 480I(525I) 2 720*480i 15.75 60.00 13.51 SDTV, DVD 480I(525I) 3 720*576i 15.62 50.00 13.50 SDTV, DVD 576I(625I) 50Hz 4 720*480p 31.47 59.94 27.00 SDTV 480P 5 720*480p 31.50 60.00 27.03 SDTV 480P 6 720*576p 31.25 50.00 27.00 SDTV 576P 50Hz 7 1280*720 44.96 59.94 74.18 HDTV 720P 8 1280*720 45.00 60.00 74.25 HDTV 720P 9 1280*720 37.50 50.00 74.25 HDTV 720P 50Hz 10 1920*1080 28.12 50.00 74.25 HDTV 1080I 50Hz, 11 1920*1080 33.72 59.94 74.18 HDTV 1080I 12 1920*1080 33.75 60.00 74.25 HDTV 1080I 13 1920*1080 56.25 50.00 148.50 HDTV 1080P 14 1920*1080 67.43 59.94 148.50 HDTV 1080P 15 1920*1080 67.50 60.00 148.50 HDTV 1080P -7- Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

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5.3. HDMI input(DTV) No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed Remarks 1 640*480 31.469 59.94 25.125 SDTV 480P 2 640*480 31.5 60.00 25.125 SDTV 480P 3 720*480 15.73 59.94 13.500 SDTV, DVD 480I(525I) 4 720*480 15.75 60.00 13.514 SDTV, DVD 480I(525I) Spec. out but display 5 720*576 15.625 50.00 13.500 SDTV, DVD 576I(625I) 50Hz 6 720*480 31.47 59.94 27 SDTV 480P 7 720*480 31.5 60.00 27.027 SDTV 480P 8 720*576 31.25 50.00 27 SDTV 576P 9 1280*720 44.96 59.94 74.176 HDTV 720P 10 1280*720 45 60.00 74.25 HDTV 720P 11 1280*720 37.5 50.00 74.25 HDTV 720P 12 1920*1080 28.12 50.00 74.25 HDTV 1080I 13 1920*1080 33.72 59.94 74.176 HDTV 1080I 14 1920*1080 33.75 60.00 74.25 HDTV 1080I 15 1920*1080 26.97 23.97 63.296 HDTV 1080P 16 1920*1080 27.00 24.00 63.36 HDTV 1080P 17 1920*1080 33.71 29.97 79.120 HDTV 1080P 18 1920*1080 33.75 30.00 79.20 HDTV 1080P 19 1920*1080 56.25 50.00 148.5 HDTV 1080P 20 1920*1080 67.43 59.94 148.350 HDTV 1080P 21 1920*1080 67.5 60.00 148.50 HDTV 1080P 22 1920*1080 135 120 - HDTV 1080P 23 1920*1080 134.86 119.88 HDTV 1080P 24 1920*1080 112.5 100 HDTV 1080P 25 3840*2160 53.95 23.98 296.703 UDTV 2160P 26 3840*2160 54 24.00 297.00 UDTV 2160P 27 3840*2160 56.25 25.00 297.00 UDTV 2160P 28 3840*2160 61.43 29.97 296.703 UDTV 2160P 29 3840*2160 67.5 30.00 297.00 UDTV 2160P 30 3840*2160 112.5 50.00 594 UDTV 2160P When HDMI1,2,3 31 3840*2160 134.86 59.94 593.407 UDTV 2160P UHD DEEP COLOUR ON 32 3840*2160 135 60.00 594 UDTV 2160P 33 4096*2160 53.95 23.98 296.703 UDTV 2160P 34 4096*2160 54 24.00 297 UDTV 2160P 35 4096*2160 56.25 25.00 297 UDTV 2160P 36 4096*2160 61.43 29.97 296.703 UDTV 2160P 37 4096*2160 67.5 30.00 297 UDTV 2160P 38 4096*2160 112.5 50.00 594 UDTV 2160P When HDMI1,2,3 39 4096*2160 134.86 59.94 593.407 UDTV 2160P UHD DEEP COLOUR ON 40 4096*2160 135 60.00 594 UDTV 2160P -8- Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

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5.4. HDMI Input (PC) No. Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed Remarks 1 640*350 31.468 70.09 25.17 EGA 2 720*400 31.469 70.08 28.32 DOS 3 640*480 31.469 59.94 25.17 VESA(VGA) 4 800*600 37.879 60.31 40 VESA(SVGA) 5 1024*768 48.363 60.00 65 VESA(XGA) 6 1360*768 47.712 60.015 84.75 VESA(WXGA) 7 1152*864 54.348 60.053 80 VESA 8 1360*768 47.71 60.01 - - 9 1280*1024 63.98 60.02 - - Full HD, UHD model only 10 1920*1080 67.5 60 158.40 WUXGA(Reduced Blanking) Full HD, UHD model only 11 1920*1080 135 120 - - UHD model only 12 3840*2160 54 24.00 297.00 UDTV 2160P UHD model only 13 3840*2160 56.25 25.00 297.00 UDTV 2160P UHD model only 14 3840*2160 67.5 30.00 297.00 UDTV 2160P UHD model only 15 4096*2160 53.95 23.97 296.703 UDTV 2160P UHD model only 16 4096*2160 54 24 297 UDTV 2160P UHD model only -9- Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

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SOFTWARE UPDATE 1. USB DOWNLOAD 2. NSU DOWNLOAD (1) Insert the USB memory Stick to the USB port. (This Function is needed to connect to the internet.) (2) Automatically detect the SW Version and show the below (1) Menu → All Settings → General → About This TV message. (2) Click [CHEK FOR UPDATES]: system check newest version. (3) Click [YES]: initiate the download and install of the update. (3) Click [DOWNLOAD AND INSTALL]. (4) Click [Check Now]: move to “About This TV” page for update. (4) TV is updating. (5) TV is updating. (5) After finished the update, below Pop-up appear. (6) After finished the update, below Pop-up appear. (6) Turn OFF the TV and On. Check the updated SW Version (7) Click [Yes] : TV will be DC OFF → ON. and Tool Option. (8) After TV turned on, Check the updated SW Version and Tool Option. - 10 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

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X_TAL 24MHz 1. EXTERNAL P_TS_IN DDR3 2133 X 32 CI Slot M0 P_TS_OUT (512MB X 2EA) EPI block DDR3 2133 X 32 (256MB X 2EA) M1 Level EPI GST/MCLK/GCLK/EO/I2C 6 shifter PMIC I2C 4 NVRAM (256Kb) eMMC (4GB) Vx1 51P (8 lane) Vx1 / EPI/ CEDS Main IC EPI 60P (65”:8 lane, 55”↓:6lane), CEDS 68P FCIC SPI/ I2C 6 USB1 (2.0) OCP USB2 (2.0) HDMI1 I2S Out HDMI2(ARC) MAIN Audio AMP I2C 4 - 11 - HDMI3 HDMI4 IF IQ (+/-), IP(+/-) IF (+/-) IF_S X_TAL Sub MICOM I2C 1 32.768KHz (ABOV, A97C450 ) TS USB_WIFI SPDIF OUT BLOCK DIAGRAM CVBS/YPbPr ETHERNET TUNER TUNER Copyright © I2C 2 (S,S2) (T2/C/A) IR / KEY LNB Air/ AMP T2/C/S/S2 H-NIM tuner LOGO LIGHT(Ready) DVB-S MAX323 Cable WIFI/BT Combo Only training and service purposes. Sub Assy SPDIF LAN H/P RS-232 AV/COMP Area OPT LG Electronics Inc. All rights reserved.

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ivlGwˆ•Œ“G snkGwˆ•Œ“G tˆ•GpjG Z_[WŸYX]Wg]W—G Z_[WŸYX]Wg]W—G XU\n‰—šG Zn‰—šO\\ˉ˨PG 2. EPI / CDES svjrv|{XYG VYn‰—šO]\ˉPG ‚whk†tvk†{†wXYOs}hZTP„G ‚whk†tvk†{†wWYVuWYG¥GwW`VuW`„G jlkzG]“ˆ•ŒG]_w•GVlwpG]sˆ•ŒGG]Ww•G lwpGGZsˆ•ŒGGG]WwGOG\\ˉ˨GPG lwpG[sˆ•ŒG]WwGOG]\ˉGPG ‚whk†nwpvZWzjr[„G nhtthG Oy{]\W_PG nthG ‚whk†nwpvZXzkh[„G ivlGv•“ G OYSGZSG[SG^SG_SGG XXSGXYSGX\SGX]SGX^PG }kkG ]W—• }jvtXG ]_—• }jvtsmiG }jvtymiG zœ‰GwtpjG }jvtYG Oy{\W`ZPG jsrOŸXWPG }nsXG }z{G skvG npw†yz{G O{q[ZYWPG - 12 - }{lytG sz†}nsG }no†l}luG ‚whk†pYz†pu†~zO{jvuXPOnwpvP„G wtpj†ylzl{G }no†vkkG ‚whk†pYz†pu†zkO{jvuYPOnwpvP„G nz{SGlVvSGtjsrSGnsjrG wtpj wtpjGG o}kkG ‚whk†zwkpm†puO{jvuZPOnwpvP„G MG ‚whk†nwpvX]O{jvu[POnwpvP„G nthG sŒŒ“Gz›Œ™G OXSG\SG`SGXWSGXZSGY[SX_PG y{]`\WOsnkPG z~\WYXYOivlPG Copyright © lwpGGZsˆ•ŒGGG]WwGOG\\ˉ˨GPG ‚whk†tvk†{†wWYVuWYG¥GwW`VuW`„G jlkzG]“ˆ•ŒG]_w•GVlwpG]sˆ•ŒGG]Ww•G lwpG[sˆ•ŒG]WwGOG]\ˉGPG Only training and service purposes. ‚whk†nwpvX^†wtOwt†zwp†jrY„G ‚whk†nwpvX_†wtOwt†zwp†kpYP„G ‚whk†nwpvX`†wtOwt†zwp†kvYP„G ‚whk†nwpvXW†wtOwt†zwp†jYP„G ]W—•G ]_—•G LG Electronics Inc. All rights reserved.

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tˆ•GpjG 3. Vx1 wˆ•Œ“G Z_[WŸYX]Wg]W—G }X†tzlG ‚whk†nwpvX`„G ‚whk†nwpvYW„G hnw j{s hnw†j{sG ‚whk†tvk†{†wWW¥W^„G }ŸXG_sˆ•ŒGGG\XwG svjrh•G ‚whk†tvk†{†wXYOs}hZTP„G o •G ‚whk†tvk†{†uXYOs}hZRP„G ‚whk†nwpvZWzjr[„G Yj Yj pYj† h h] h]G ‚whk†nwpvZXzkh[„G kh{h†mvyth{†WVXG ‚whk†nwpvYZ„G ‚whk†nwpvY[„G ip{G‚YaZ„G kpzwsh€G{€wlG z–jG {€wlG kˆ›ˆG“ˆ•ŒG yniVtRG jvttlu{G ‚sŒŒ“GWGaGsŒŒ“GW„G sjk†|okG stX_hG }i€XG uVhG yniVtRG }X]†}X^†}X_G ‚sŒŒ“GWGaGsŒŒ“GX„G G G G G G G G G G G - 13 - ‚sŒŒ“GWGaGsŒŒ“GY„G G G G G G G G G G G ‚sŒŒ“GWGaGsŒŒ“GZ„G G G G G G G G G G G ‚sŒŒ“GXGaGsŒŒ“GW„G sjk†|okG stX_hG snk†lwp†ZnG }X_G]“ˆ•ŒG yniG ‚sŒŒ“GXGaGsŒŒ“GX„G sjk†|okG stX_hG snk†lwp†ZnG }X_G]“ˆ•ŒG tRG ‚sŒŒ“GXGaGsŒŒ“GY„G sjk†|okG stX_hG snk†lwp†ZnG }X^G]“ˆ•ŒG tRG Copyright © ‚sŒŒ“GXGaGsŒŒ“GZ„G G G G G G G G G G G ivl†jlkz†XU\ ‚sŒŒ“GYGaGsŒŒ“GW„G sjk†|okG stX_hG }X_GXY“ˆ•ŒG yniG nG ivl†jlkz†XU\ ‚sŒŒ“GYGaGsŒŒ“GX„G sjk†|okG stX_hG X^€†X_€GXY“ˆ•ŒG yni~G nG ‚sŒŒ“GYGaGsŒŒ“GY„G G G G G G G G G G G ‚sŒŒ“GYGaGsŒŒ“GZ„G G G G G G G G G G G ‚sŒŒ“GZGaGsŒŒ“GW„G sjk†|okG G stX_hG G snk†lwp†ZnG }X_G_“ˆ•ŒG yniG }X_G_“ˆ•ŒGaG Only training and service purposes. snkG]\|r^\G ‚sŒŒ“GZGaGsŒŒ“GX„G sjk†|okG G stX_hG G snk†lwp†ZnG }X_G_“ˆ•ŒG tRG G GGGG]\|r]ZG snk†lwp†ZnG ‚sŒŒ“GZGaGsŒŒ“GY„G sjk†|okG stX_hG }X_G]“ˆ•ŒG yniG xTzhjGaG xTzhjG snkG[`•ŠG G snk†lwp†ZnG ‚sŒŒ“GZGaGsŒŒ“GZ„G sjk†|okG G stX_hG G }X_G]“ˆ•ŒG G tRG v•“ G xTzhjG LG Electronics Inc. All rights reserved.

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+3.3V_NORMAL + D_Demod_Core +3.3V_NORMAL 4. TUNER 3.5V_ST 18Y Tuner [B1_+3.3V_RF] 3 EXT_Demod Option 1.8K Ω [+3.3V_DEMOD_TU] 11 [B3_+1.2V_DEMOD] 13 33 Ω 5 [SCL] 6 [SDA] LNB1 [LNB_TX1] 12 8 [TONECTRL] IC7001 [LNB] 26 LNB_OUT 2 [LNB] [SCL_RF] 1 I2C_SCL2 AG10 [PAD_TGPIO2SCK1] [SDA_RF] 2 33 Ω AH10 [PAD_TGPIO3SDA1] I2C_SDA2 [ERROR] 14 EWBS_TU FE_DEMOD1_TS_CLK AC5 [PAD_TS2_CLK] [MCLK] 15 FE_DEMOD1_TS_SYNC AD4 [PAD_TS2_SYNC] [SYNC] 16 FE_DEMOD1_TS_VAL AC4 [PAD_TS2_VLD] [VALID] 17 FE_DEMOD1_TS_DATA [0-7] D[0-7] 18-25 [GPIO_27~34_TP0_D0~D7] Main IC LNB_TX - 14 - /TU_RESET1_TU [RESET1_DEMOD] 10 AH4 [PAD_GPIO13] IF_S_IP_MAIN [ I[P] ] 59 AM8 [PAD_IP_S] Copyright © IF_S_IN_MAIN [ I[N] ] 60 AL8 [PAD_IM_S] IF_S_QP_MAIN [ Q[P] ] 62 AK10 [PAD_QP_S] IF_S_QN_MAIN [ Q[N] ] 61 AL9 [PAD_QM_S] IF_S_AGC_MIAN [SAT_AGC] 58 AK8 [PAD_IFAGC_S] 0Ω AH9 [PAD_GPIO26 (DISEQC_OUT)] IF_P_TU [ IF[P] ] 8 AL11 [PAD_IP_T] [ IF[N] ] 7 IF_N_TU AM10 [PAD_IM_T] [IF_AGC] 5 IF_AGC_TU AM11 [PAD_IFAGC_T] Only training and service purposes. TU_SIF_TU [TU_SIF] 6 AL12 / AM12 [SIF_P/N] TU_CVBS_TU [CVBS] 4 Y2 [PADA_CVBS0] Main Ball No : 27*27 / 23*23 _package LG Electronics Inc. All rights reserved.

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h}VjvtwG jvtwX†€Vj}izG ‚}Y„whkh†npuXwGVG‚€X„Gwhkh†j}izXG h}X†j}iz†kl{G [kZ„whk†pYz†v|{†zkYOnwpv) jvtwX†w‰GVGjvtwX†w™GVGjvtwX†kl{G ‚~Y„whkh†ypuXwGVG‚Z„whkh†ipuXwGVG‚jX„Gwhk†pYz†v|{†zkXG jvtwXVh}XVk}p†s†puG [sY„whk†spulpu†sWG jvtwXVh}XVk}p†y†puG [sX„whk†spulpu†yWG zwkpm†v|{G zwkpmG [l\„whk†zwkpm†v|{G 5. VIDEO & AUDIO IN/OUT ‚kY„whk†pYz†v|{†ijrG h|k†zjrG ‚Z_„Gjsr†pG k{}Vtu{†}†v|{G h|k†syjrG G zwr†sRGVGsTG [€Z„whkh†j}iz†v|{XG ‚lY„whk†pYz†v|{†~zG ‚_„G~jrG h|k†syjoG G ‚kX„whk†pYz†v|{†zkG ‚ZWSGZZ„G swmG ‚^„Gzkh{hG zwrGsG ‚mY„whk†kkjy†khGVG‚mZ„whk†kkjy†jrG pYj†zkh†W†htwXGVGpYj†zjs†W†htwXG G thpuGhtwG ‚XWSXX„G htw†ylzl{†uGG G Opj\_WWP G ‚lXW„whk†nwpv^†wtG zwr†yRGVGyTG ‚Z]„G G G ‚X_SGYX„G swmG zwrGyG ‚XY„G tˆ•GpjG {|†zpm†{|G zpm†wG - 15 - ‚hsXY„Gwhk†zpmwG htw†t|{lG zpm†uG ‚htXY„Gwhk†zpmtG YYG {œ•Œ™GG tpjvtG Y]G zpkl†ow†t|{lG Copyright © \G ow†sv|{†qhjrG ‚tZ„whk†lhywovul†v|{yG h|kh†v|{yG oVwGhtwG ow†yv|{†qhjrG ‚tY„whk†lhywovul†v|{sG h|kh†v|{sG Opj]ZWWP G G swmG oVwGqˆŠ’G G G ‚hsX\„whk†nwpvYXG ow†kl{G z{†nwpv†YZ†oW†hyj‚hk_„G oktp†hyjG oktpYG Only training and service purposes. LG Electronics Inc. All rights reserved.

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6. HDMI 2.0 oktpYUW†X†\}†kl{G oktpYUW†X†owkG kkj†zjsXGVGkkj†zkhXG {tkzXGTGkWVkXVkYVjsrG oktpXG oktp†jljG oktpYUW†Y†\}†kl{G oktpYUW†Y†owkG kkj†zjsYGVGkkj†zkhYG oktp†hyjG {tkzYGTGkWVkXVkYVjsrG oktpYGž›GhyjG oktp†jljG tˆ•GpjG oktpYUW†Z†\}†kl{G - 16 - oktpYUW†Z†owkG kkj†zjsZGVGkkj†zkhZG {tkzZGTGkWVkXVkYVjsrG oktpZG Copyright © oktp†jljG oktpYUW†[†\}†kl{G oktpYUW†[†owkG kkj†zjs[GVGkkj†zkh[G {tkz[GTGkWVkXVkYVjsrG oktp[G Only training and service purposes. tpjvtG LG Electronics Inc. All rights reserved.

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R\}†|ziZG kjkjGvjwG Opj[^WWPG kjkjGvjwG R\}†|ziZG Opj[\WXPG |ziYUW†Y†ktGVGkwG |ziYG |ziYUW†Z†ktGVGkwG |ziZG ~pmp†ktGVGkwG tˆ•GpjG \G ~vsV~pmp†wv~ly†vuG ^G jvtiv†ylzl{G ~ˆŒ™G `G i{†~hrl|w†kl}pjlG - 17 - XWG Ow[WWWPG i{†~hrl|w†ovz{G 7. USB / Wi-Fi / M-Remote / UART(Debug) X\G pyG X]G slk†yG X`G rl€YG kli|nG|hy{G kli|n†yGVG{G YWG rl€XG ~ˆŒ™G |zGv•“ G OwYWXPG wovulGqhjrG Copyright © zvj†yGVG{G yzYZYjG Opj^YWWPG kv|{XG ypuXG ~ˆŒ™G OwYWWPG tpjvtG zvj†yGVG{G OpjZWWWPG Only training and service purposes. LG Electronics Inc. All rights reserved.

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8. I2C Map lwpGVGjlkzG–•“ G pYj†zjs]G lwpGwtpjG ZZGΩ pYj†zkh]G w^XWWG }ŸXG\XwG XU_’GΩ XU_’GΩ pYj†zjs[G pYj†zkh[G XWWΩ htwG }ŸXG–•“ G RZUZ}†uvyG {jvu†pYj†luG XU_’GΩ XU_’GΩ ZZGΩ u}yhtG RZUZ}†uvyG tˆ•GpjG - 18 - pYj†zjs†XG GG ZZGΩ pYj†zkh†XG tpjvtG pYj†zjsYG pYj†zkhYG ZZGΩ suiG XU_’GΩ XU_’GΩ Copyright © RZUZ}†z{G ZZGΩ XU_G’GΩ XU_G’GΩ {œ•Œ™G RZUZ}†uvyG Only training and service purposes. LG Electronics Inc. All rights reserved.

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9. GPIO puz{hu{†ivv{ G ~vsVl{o†wv~ly†vuGGG }pk†jw|G tpjvtG }pk†jw|YG jw|GkjkjG zvj†ylzl{G }pk†jvylG jvylGkjkjG o~G–—›–•GG ip{W¥]G hkjGX¥\G V{|†ylzl{XG {œ•Œ™G htw†ylzl{†uG hœ‹–GhtwXG wjt†ylzl{G wjtjphG wjt†\}†j{sG vjwG jvtwX†kl{G j–”—–•Œ•›Vh}GqˆŠ’G h}X†j}iz†kl{ G kh{h†mvyth{†WG tˆ•GpjG kh{h†mvyth{†XGGG ow†kl{ G - 19 - }X†tzlG oVwGqˆŠ’G wˆ•Œ“G hnw†j{ysG o{wkh•Vtjrs†hG svjrh•G {jvu†pYj†luVnjsr†hG Copyright © wtpjG w~t†kptG w~t†kptYGGG |zi†j{sYG sVk†jsrG |ziXGvjwG |ziXG wv~lyG V|zi†vkjYG sVk†kvG sVk†}z€ujG |zi†j{sZG V|zi†vkjZG |ziYGvjwG |ziYG Only training and service purposes. LG Electronics Inc. All rights reserved.

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G pYj†zjs†X†tpjvtGVGpYj†zkh†X†tpjvtG wv~ly†vuVvmmXG XZ}T\}GuvythsGkjkjG pjY\WWG ~vsVl{o†wv~ly†vuG {wz\][YW_G tz{hyTstX_hG pjXWWG zvj†ylzl{G wv~ly†vuVvmmY†ZG XZ}TZUZ}GuvythsG XZ}TX}GkjkjG puz{hu{†ivv{G pjYZWWG pjYZWYG z€z{lt†kli|nG zuX\WXWX`G zuX]W^WYZG G wv~ly†vuVvmmY†[G ZU\}†z{TXU\}GkjkjG yzYZYjG pjYZWZG zvj†yV{G z€}s_ZG kŒ‰œŽG—–™›G wYWWG htwG htw†t|{lG pj\_WWG vw{WGuvuGsvnvGsjkVsvnvGsjkG k{hYWXWtG GGGGGGGGGGGGGGGGGGGGuvuGsvnvGvslkVsvnvGvslkG 10. GPIO(MICOM - ABOV) tvklsX†vw{†WVXVYVGZG vw{XG{}TuvuGlwpVivV{}GlwpVivG v{wYGylzly}lkG ylzl{GpjG wv~ly†kl{G vw{ZGtX]Vy{rVoX\G pjXZWWG tpjvt†kli|nG tpjvtGkli|nG[wG tpjvt†ylzl{G wZWWWG oktpGXGVGYGVGZGV[G oktp†jljG GG XY\W^~zTW[sG qrZXWXVqrZXWYVqrZXWZVqrZXW[G tpjvtGT{hsG ZWWXG pu}†j{sG ZYU^]_ro¡G - 20 - wv~lyG~hmlyG tvkl†zlslj{†w~tXG wXWWXG ys†vuG pyG l€l†zjsGVGGl€l†zkhG lkpk†~wG ~vsV~pmp†wv~ly†vuG Copyright © i{†~hrl|w†kl}pjlG pyGVGrl€V~pmpVi{G jvtiv†ylzl{G w[WWWG ht†tvkl†kl{†vslkG i{†~hrl|w†ovz{G rl€XGVGrl€YGG {†jvu†z€z†wv~ly†vmm†vslkG slk†yG G yl{lu{pvu†kpzhislG G Only training and service purposes. nukG ~pmp†luG ZkMs†kpt†luG RZU\}G~pmpG \XwG}XG~ˆŒ™G XW’GΩ nukG nukG whuls†j{sG RXZ}G{vGwhuls†}jjG LG Electronics Inc. All rights reserved.

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11. POWER 1 MICOM ZU\}Gz{G [hG IR Ass’y pjYZW\G RS-232 ml{Ox[XWXPG WiFi Module L302 +AVDD_NODIE G L322 +AVDD33_AU33 G G G L333 +AVDD_DMPLL kXZUY}G G XU\}GkkyG G ZhG SoC(DDR) G pjYZWYG G jvyl†X}WG XYhG SoC(VDDC) - 21 - pjYZXWG jw|†X}WG ZhG SoC(VDDC_CPU) pjYZW`G Copyright © L1100 ml{OxXXWXPG L7601/2 Panel_VCC Only training and service purposes. L7100 LNB LG Electronics Inc. All rights reserved.

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ZUZ}GuvytG ZhG HP Amp 12. POWER 2 pjYZWYG NVRAM SPDIF OUT Pull up GAMMA IC XU_}G L330 SoC(EMMC1V8) XhG pjYZW^G L2301 EMMC VCCQ L319 SoC(+VDDP33) G G L331 SoC(VDDP_3318_C) G G L2300 EMMC VCC kXZUY}G G L5801 Audio Amp G - 22 - G L6503 +3.3V_DEMOD L6505 +3.3V_TU L6900 +1.2V_DEMOD Copyright © L7001 LNB EPI_FCIC Flash USB1 OCP \}GuvytG [hG USB2 OCP pjY\WWG CI OCP Only training and service purposes. hXZUY}G Audio Amp LG Electronics Inc. All rights reserved.

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EXPLODED VIEW IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the EXPLODED VIEW. 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. Do not modify the original design without permission of manufacturer. 910 400 900 HW1 120 540 521 800 411 810 HP1 530 LV1 820 HS1 121 LED Array Ass’y 200A 570 500 700 Set + Stand A10 200T Stand Base Stand Body 200 A9 + AR2 - 23 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

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DISASSEMBLY GUIDE 1. Back Cover Disassembly Guide 1-1. Changing Point_ Applying Latch Structure to Top Area of B/C ■ Latch Position and Structure. (1) Latch Mechanism Latch B/C Module Section A-A (2) Latch Position A A 43” : 12EA 50” : 14EA Screw (12EA) Latch (6EA) - 24 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

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1-2. P  roduct Structure Analysis_Applying 2. Back Cover Assembly Guide Latch Structure to Top Area of B/C 2-1. B/C Assembly ■ Disassemble process of Back Cover. (1) Place the B/C on the module plate and Press Latch Points (1) Lift up Bottom Area of Back Cover. (If you lift it up too to assemble the B/C. much, latch of B/C can be damaged) Latch (6EA) (2) Sliding to top direction and you can disassemble it. Press direction Latch assemble point (3) Complete disassemble of Back Cover B/C Module (2) Check whether gap occurs in the Top side of the B/C. Sliding direction B/C Module Latch assemble point - 25 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

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2-2. Assembly Screw. Screw 43” : 12EA 50” : 14EA - 26 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.

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TROUBLE SHOOTING GUIDE Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Contents of Standard Repair Process No. Error symptom (High category) Error symptom (Mid category) Page Remarks 1 No video/Normal audio 1 2 No video/No audio 2 3 A. Video error Picture broken/ Freezing 3 4 Color error 4 Vertical/Horizontal bar, residual image, 5 5 light spot, external device color error 6 No power 6 B. Power error Off when on, off while viewing, power 7 7-8 auto on/off 8 No audio/Normal video 9 C. Audio error 9 Wrecked audio/discontinuation/noise 10 10 Remote control & Local switch checking 11 11 MR18 operating checking 12 D. Function error 12 Wifi operating checking 13 14 External device recognition error 14 15 E. Noise Circuit noise, mechanical noise 15 16 F. Exterior error Exterior defect 16 First of all, Check whether there is SVC Bulletin in GSCS System for these model. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Established Error A. Video error date symptom No video/ Normal audio Revised date First of all, Check whether all of cables between board is inserted properly or not. (Main B/D↔ Power B/D, LVDS or EPI Cable, Speaker Cable, IR B/D Cable,,,) ☞A1 ☞A18 No video Normal Y Check Back Light Y Check Power Y Replace T-con/Main On Normal Normal audio audio On with naked eye Board Board or module voltage 13.2V etc. N N N Move to No ☞A18 Check Power Board 13.2V output Repair Power video/No audio Board or parts Normal Y Replace Inverter voltage or module End N Repair Power Board or parts ※Precaution ☞A4 & A2 Always check & record S/W Version and White Replace Main Board Re-enter White Balance value Balance value before replacing the Main Board 1 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Established Error A. Video error date symptom No video/ No audio Revised date ☞A18 No Video/ Check various Check and Normal Y No audio voltages of Power replace Board (13.2V…) voltage? MAIN B/D N End Replace Power Board and repair parts 2 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Established Error A. Video error date symptom Picture broken/ Freezing Revised date . By using Digital signal level meter ☞ A3 . By using Diagnostics menu on OSD Check RF Signal level ( Advanced→ Channels→ Channel Tuning→ Manual Tuning → Check the Signal ) - Signal strength (Normal : over 50%) - Signal Quality (Normal: over 50%) Check whether other equipments have problem or not. Normal Y (By connecting RF Cable at other equipment) Signal? → DVD Player ,Set-Top-Box, Different maker TV etc` N ☞ A4 Check RF Cable Normal Y Check SVC N Check Tuner Y Connection Close 1. Reconnection Picture? S/W Version Bulletin? soldering 2. Install Booster Y N N S/W Upgrade Normal N Contact with signal distributor Picture? or broadcaster (Cable or Air) Normal N Y Picture? Replace Main B/D Y Close Close 3 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Established Error A. Video error date symptom Color error Revised date ☞A6 ☞ A7 ※ Check Check color by input and replace -External Input Y Y Color Link Cable Color Color Y -AV Replace Main B/D Replace module error? (EPI or Vx1 error? error? -HDMI Cable) and N contact N N condition Check error End color input mode ☞A8 Check External Input/ External device Y external Check Test pattern Component /Cable Replace Main/T-con B/D device and error normal cable N Request repair for external device/cable N Check external External device Y HDMI device and /Cable Replace Main/T-con B/D error cable normal 4 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process A. Video error Established Error date symptom Vertical / Horizontal bar, residual image, light spot, external device color error Revised date Vertical/Horizontal bar, residual image, light spot Replace Module ☞A6 ☞ A7 N Check color condition by input Check Check and -External Input Screen Y external Y Screen N Screen -HDMI Normal? replace Link Replace Main/T-con B/D normal? device normal? normal? Cable connection condition N For LGD panel Y N Y Replace Main B/D Replace Request repair End End for external ☞A8 module device Check Test pattern For other panel External device screen error-Color error Check screen Check S/W Version Check N condition by input External -External Input Input Connect other external version -Component error device and cable Screen N Replace -HDMI/DVI (Check normal operation of normal? Main/T-con Y External Input, Component, B/D Component RGB and HDMI/DVI by error Y S/W Upgrade connecting Jig, pattern Generator ,Set-top Box etc. Request repair for external device Y Connect other external Normal N HDMI/ device and cable N screen? DVI Screen Replace (Check normal operation of External Input, Component, normal? Main /T-con Y RGB and HDMI/DVI by B/D connecting Jig, pattern Generator ,Set-top Box etc. End 5 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Established Error B. Power error date symptom No power Revised date ☞A17 ☞A18 DC Power on Replace Check Power LED Y Normal N Check Power Y by pressing Power Key OK? Power LED On? operation? On ‘”High” On Remote control B/D . Stand-By: Red or Turn On N Y . Operating: Turn Off Check Power cord Replace Main B/D was inserted properly ☞A18 N Measure voltage of each output of Power B/D Normal? Y Y Y Normal Replace Main B/D voltage? Normal Close Check ST-BY 3.5V Y voltage? N ☞A18 Replace Power B/D N Replace Power B/D 6 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Established Error B. Power error date symptom Off when on, off while viewing, power auto on/off Revised date Check outlet Y N CPU Check A/C cord Error? Replace Main B/D Normal? End Abnormal N Check for all 3- phase Y Abnormal Replace Power B/D power out 1 Fix A/C cord & Outlet and check each 3 phase out 7 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Established Error B. Power error date symptom Off when on, off while viewing, power auto on/off Revised date * Please refer to the all cases which can be displayed on power off mode. Power Off list Explanation Action contents Power off when TV is not turned off during a certain time KEYTIMEOUT RESULT : micom force to trigger TV power off. Check & Change Main B/D CONDITION : When pressing power key while power on/off status, CPU does not response within 8 seconds Almost the same as Power Off by KEYTIMEOUT. If there is no vaild communication Bet ween CPU and MICOM for more than 5 seconds, the MICOM switcheds off PSU and 1SEC Power OFF Check & Change Main B/D Records. Power off by 1SEC Power off. In this case, we don’t have information where the malfunction exactly occurred. But in in indicates that CPU had stopped and rebooted. In case of AC Off (It is normal when the power cord is unplugged.) Normal ACDET If there are many ACDETs connected, Power Board is defective Check & Change Power B/D Power off by unstable AC power detect. RESULT : micom check the stable power. 5V MNT Check & Change Power B/D CONDITION : When AC on or DC on, stabilization check routine (Power Detect High Check) fail after multi power on. CPUABNORMAL If the CPU attempts to reset in case of abnormal operation and Shut Down in case of failure. Check & Change Main B/D Power off when receiving no ack. NO POLING RESULT : TV power off/on (Reboot) Check & Change Main B/D CONDITION : There is no I2C response from CPU for 15 seconds. CPUCMD Power off by main SoC command. Check & Change Main B/D Power off by module error (OLED) INV_ERROR Check & Change OLED Module CONDITION : OLED Module send signal to micom ONRF_FAIL RESULT : Reboot, CONDITION : OLED module compensation is running but fails. Check & Change OLED Module PNWASHFAIL Power off by panel noise wash function fail case. Check & Change OLED Module RESET When Micom is reset by AC Off KEY Power off by Local key OFFTIMER Power off by Off timer SLEEPTIMER Power off by sleep timer NOSIG Power off by No Signal FANSTOP Power off by FAN operation stopped INSTOP Power off by Instop Key Normal Case AUTO OFF Power off by auto off function RESREC Power off by reserved recording RECEND Power off when recording stops SWDOWN Reboot by SW down load function UNKNOWN No meaning (same as initial value) COMP_END OLED threshold voltage degradation(Compensation) completes. PNWASHDONE Power off by panel noise wash function complited. (OLED) 8 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Established Error C. Audio error date symptom No audio/ Normal video Revised date ☞A20 ☞A21+A18 Check user N Check audio Y No audio Normal menu > Off 13.2V of Power Screen normal voltage Speaker off Board Y N Cancel OFF Replace Power Board and repair parts Check N Disconnection Replace MAIN Board End Speaker disconnection Y Replace Speaker 9 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Established Error C. Audio error date symptom Wrecked audio/ discontinuation/noise Revised date → abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio Wrecked audio/ ☞A21+A18 Check and replace Discontinuation/ Check audio speaker and Noise for B+ Voltage (13.2V) connector Check input all audio signal Y Signal -RF normal? Wrecked audio/ Y -External Input Normal signal Discontinuation/ N Replace Main B/D voltage? Noise only for D-TV N Wrecked audio/ Discontinuation/ Replace Power B/D Noise only for Analog (When RF signal is not received) Request repair to external Wrecked audio/ Replace Main B/D End cable/ANT provider Discontinuation/ Noise only for External Input (In case of N External Input Connect and check Normal signal error) other external audio? Check and fix device external device Y Check and fix external device 10 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process D. Function error Established Error date symptom Remote control & Local switch checking Revised date 1. Remote control(R/C) operating error Replace Main B/D ☞A22 ☞A22 ☞A22 Check & Repair N Y Y Check R/C itself Normal Y Normal Check B+3.5V Normal Check IR Normal operating? Cable connection operating? Voltage? Signal? Operation On Main B/D Output signal Connector solder N Y N N ☞A18 Check R/C Operating Check & Replace Close Check 3.5v on Power B/D Repair/Replace When turn off light Baterry of R/C Replace Power B/D or IR B/D in room Replace Main B/D (Power B/D don’t have problem) If R/C operate, Normal Y operating? Close Explain the customer cause is interference from light in room. N Replace R/C 11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process D. Function error Established Error date symptom MR18 operating checking Revised date 2. MR18(Magic Remocon) operating error ☞A4 Check the RF Receiver ver N Check MR18 Normal Y Turn off/on the Press the Is show ok N INSTART menu is “00.00”? itself Operation operating? set and press wheel message? the wheel N Y Y ☞A23 Check & Replace Close Check & Repair Battery of MR18 RF assy connection Normal Y ☞A4 operating? Close Is show ok N Press the back RF Receiver ver N message? key about 5sec Close N is “00.00”? Y Replace MR18 Y Close Down load the Firmware * If you conduct the loop at 3times, change the M4. * INSTART MENU14.RF Remocon Test3. Firmware download 12 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process D. Function error Established Error date symptom Wifi operating checking Revised date 3.Wifi operating error ☞A4 ☞A24 Check the Wi-Fi Mac value N Check the Wifi wafer Normal Replace N INSTART menu is “NG”? 1pin Voltage? Main B/D Y ☞A24 Y Close Check & Repair Wifi cable connection ☞A4 Wi-Fi Mac value N is “NG”? Close Y Change the Wifi assy 13 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Established Error D. Function error date symptom External device recognition error Revised date Y Check technical Check External Input Signal information Technical N input and Component Replace Main B/D input? - Fix information information? Recognition error signal - S/W Version N Y HDMI/ Check and fix DVI, Optical external device/cable Fix in Recognition Replace Main B/D accordance error with technical information 14 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Established Error E. Noise date symptom Circuit noise, mechanical noise Revised date Identify Circuit Check location nose Replace PSU noise of noise type Mechanical Check location noise of noise ※ When the nose is severe, replace the module ※ Mechanical noise is a natural (For models with fix information, upgrade the phenomenon, and apply the 1st level S/W or provide the description) description. When the customer does not OR agree, apply the process by stage. ※ If there is a “Tak Tak” noise from the ※ Describe the basis of the description cabinet, refer to the KMS fix information and in “Part related to nose” in the Owner’s then proceed as shown in the solution manual Manual. (For models without any fix information, provide the description) 15 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Established Error F. Exterior defect date symptom Exterior defect Revised date Zoom part with Module Replace module exterior damage damage Cabinet Replace cabinet damage Remote control Replace remote control damage Stand Replace stand dent 16 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Contents of Standard Repair Process Detail Technical Manual No. Error symptom Content Page Remarks 1 A. Video error_ No video/Normal Check LCD back light with naked eye A1 2 audio Check White Balance value A2 TUNER input signal strength checking 3 A3 method A. Video error_ video error /Video 4 lag/stop Version checking method A4 5 Tuner Checking Part A5 A. Video error _Vertical/Horizontal bar, 6 Connection diagram A6 residual image, light spot Check Link Cable (Vx1/EPI) reconnection 7 A. Video error_ Color error A7 condition A-1/11 9 Check Cable (1) ~ (2) A-2/11 A-3/11 ~ 10 Exchange Main Board (1) ~ (3) A-5/11 Defected Type caused by T-Con/ A-6/11 ~ 11 Exchange Module (1) ~ (3) Inverter/ Module A-8/11 A-9/11 ~ 12 Exchange T-Con (1) ~ (2) A-10/11 13 Exchange Power Board(PSU) A-11/11 Continue to the next page Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Contents of Standard Repair Process Detail Technical Manual Continued from previous page No. Error symptom Content Page Remarks 14 Check front display LED A17 B. Power error_ No power 15 Check power input Voltage & ST-BY 3.5V A18 B. Power error_Off when on, off 16 POWER OFF MODE checking method A20 while viewing Checking method in menu when there is no 17 A21 C. Audio error_ No audio/Normal audio video Voltage and speaker checking method when 18 A22 there is no audio 19 Remote control operation checking method A23 D. Function error 20 Motion Remote operation checking method A24 21 How to use the Service remote control A25-A27 22 Check items after Main B/D replacement A28 23 E. Etc Adjustment Test pattern – ADJ Key A29 24 T-Con PMIC voltage measurement point A30 How to use JIG 25 A31 (Power B/D Diganostic Smart Jig Multi Gender Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom A. Video error_No video/Normal audio date Revised Content Check LCD back light with naked eye A1 date 1 After turning on the power and disassembling the case, check with the naked eye, whether you can see light from locations. A1 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom A. Video error_No video/Normal audio date Revised Content Check White Balance value A2 date Entry method 1. Press the ADJ button on the remote control for adjustment. 2. Enter into White Balance. 3. After recording the R, G, B (GAIN, Cut) value of Color Temp (Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD. A2 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom A. Video error_Video error, video lag/stop date TUNER input signal strength checking method Revised Content date A3 Advanced Channels  Channel Tuning Manual Tuning When the signal is strong, use the attenuator (-10dB, - 15dB, -20dB etc.) A3 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom A. Video error_Video error, video lag/stop date Version checking method Revised Content date A4 1. Checking method for remote control for adjustment Version v Press the IN-START with the remote control for adjustment A4 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom A. Video error_Video error, video lag/stop date Revised Content TUNER checking part A5 date Checking method: 1. Check the signal strength or check whether the screen is normal when the external device is connected. 2. After measuring each voltage from power supply, finally replace the MAIN BOARD. A5 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error A. Video error _Vertical/Horizontal bar, Established symptom residual image, light spot date Revised Content connection diagram (1) date A6 As the part connecting to the external input, check the screen condition by signal A6 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom A. Video error_Color error date Revised Content Check Link Cable(EPI) reconnection condition date A7 1 Check the contact condition of the Link Cable, especially dust or mis insertion. A7 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Appendix. Examples of Symptoms(Image error) Check for poor cable contact Symptom Item Cause Symptom Image Name Pin 단선 CABLE Color smear Poor broken pin of FFC cable Color is Excessive due to FFC Cable CABLE R Color Excessive Contact. screen is dark due to poor contact due CABLE Screen darkness to disconnection of the FFC cable pin. G color transient due to poor FFC cable CABLE G Color Excessive connection A - 1/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Appendix. Examples of Symptoms(Image error) Check for poor cable contact Symptom Item Cause Symptom Image Name CABLE Color spread LVDS cable connection problem CABLE Color spread LVDS cable connection problem CABLE Color spread LVDS cable connection problem Due to foreign substance withi nLVDS CABLE Screen stop cable PIN A - 2/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Appendix. Examples of Symptoms(Main) Check parts by symptom Symptom Item Cause Symptom Image Name Main Screen noise Bit noise from horizontal screen Broken screen due to Main Screen noise Main IC problem Main Dark picture Dark left-side screen Top/bottom screen part Main Broken picture Picture problem due to tuner Inner side quality problem A - 3/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Appendix. Examples of Symptoms(Main) Check parts by symptom Symptom Item Cause Symptom Image Name Main Broken screen Broken screen in a horizontal manner Main Screen spread Screen corner appears blurry Main Color Spread Color spread on the screen Main Blurry Screen Blurry picture on the screen A - 4/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Appendix. Examples of Symptoms(Main) Check parts by symptom Symptom Item Cause Symptom Image Name No problem at the initial stage, Main Broken picture G-color spread after 10 minutes Right-side Main Screen Right-side screen problem problem LG logo Main Screen picture spread problem Screen problem No problem at the initial stage. Right-side Main During Heat run, right-side picture picture problem problem A - 5/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Appendix. Examples of Symptoms(Module) Check parts by symptom Symptom Item Cause Symptom Image Name Isometric Isometric horizontal bars occur MODULE Horizontal Bar throughout the screen MODULE Internal matter BLU internal foreign matter inflow MODULE Image broken 6 block image broken MODULE Image broken Screen sync signal broken A - 6/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Appendix. Examples of Symptoms(Module) Check parts by symptom Symptom Item Cause Symptom Image Name Internal damage and image breakage MODULE Image broken due to external impact Bend on the Bending due to lateral external impact MODULE screen and internal bending of BLU Vertical spreading on cube screen in no MODULE Vertical smear signal MODULE Over color Screen contour part brightly Over color A - 7/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Appendix. Examples of Symptoms(Module) Check parts by symptom Symptom Item Cause Symptom Image Name MODULE Vertical bar Center Vertical Bar MODULE Screen darkness Center of the screen 1 block dark MODULE Vertical bar Center Vertical Bar Darkness at the MODULE bottom of the MODULE internal BLU breakage screen A - 8/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Appendix. Examples of Symptoms(T-Con) Check parts by symptom Symptom Item Cause Symptom Image Name screen lower T-Con is defective and the picture below T-CON image broken the screen is broken screen lower T-Con is defective and the picture below T-CON image broken the screen is broken screen lower T-Con is defective and the picture below T-CON image broken the screen is broken screen lower T-Con is defective and the picture below T-CON image broken the screen is broken A - 9/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Appendix. Examples of Symptoms(T-Con) Check parts by symptom Symptom Item Cause Symptom Image Name T-CON Wafer Locking The strength is T-CON Image Broken weak and cable contact failure occurs Darkness at the Initial normal operation, T-CON top of the screen upper darkness during heat run The entire screen is dark and bit noise T-CON Image Broken occurs The entire screen is dark and bit noise T-CON Image Broken occurs A - 10/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Appendix : Exchange Power Board (PSU) No Light No picture/Sound Ok A - 11/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom B. Power error _No power date Revised Content Check front Power Indicator date A17 ST-BY condition: On or Off Power ON condition: Turn Off A17 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom B. Power error _No power date Revised Content Check power input voltage and ST-BY 7.8V A18 date SET Model Power P/N, Name 65UK75 LGD EAY64868601, LGP65-18UL6 55UK75 LGD EAY64808601, LGP4955-18UL6 Power Board Voltage / Current Power Check Sequence 1. AC input Check : SK100 (100~240Vac) P801 J29 (13.2V) MS 2. PWR-ON Check : J30 - SET On : above 3V - SET St-by : 0V 3. 13.2V DC Check : J29 P201 - SET On : 13.2V - SET St-by : 7.8V J30 (PWR-ON) 1. 12P, 13.2V OUTPUT 2. 18P, UHD 13.2V Output + Local Dimming - UK75 ① D-GND D-GND ① Pwr_ON PDIM2 Pwr_ON PDIM2 D-GND D13 D-GND D13 D13 D13 D13 D13 A13 A13 A13 A13 A-GND A-GND A-GND A-GND MS PDIM1 Drv_ON PDIM1 GND SCLK SK100 (AC input) VSINC SIN A18 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error symptom B. Power error _Off when on, off whiling viewing Established date Revised Content POWER OFF MODE checking method date A20 Entry method 1. Press the IN-START button of the remote control for adjustment. 2. Check the entry into adjustment item 3. A20 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom C. Audio error_No audio/Normal video date Revised Content Checking method in menu when there is no audio date A21 Checking method 1. Press the Setting button on the remote control 2. Select the Sound function of the Menu 3. Select the Sound Out 4. Select TV Speaker A21 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom C. Audio error_No audio/Normal video date Voltage and speaker checking method Revised Content date A22 when there is no audio ② ① Checking order when there is no audio ③ 1 SPK_R-FT 2 SPK_R+FT 3 SPK_L-FT 1.Check the contact condition of or 13.2V connector of Main Board 4 SPK_L+FT 2. Measure the 13.2V input voltage supplied from Power Board (If there is no input voltage, remove and check the connector) 3. Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik sound when you touch the GND and output terminal, the speaker is normal. A22 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom D. Function error date Revised Content Remote control operation checking method date A23 Pin Pin name 1 VCC ① 2 USB_DM IR & EYE Sensor 3 USB_DP 4 GND 5 WOL/WIFI_ON 6 VCC 7 COMBO_RESET 8 GND 9 BT_WAKEUP_DEVICE 10 BT_WAKEUP_HOST IR & LOGO light Rear 11 GND 12 GND 13 14 15 ③ 16 EYE_SDA IR LED Eye 17 EYE_SCL 18 GND 19 IR 20 LED_R 21 GND Checking order to check remote control ② 22 VCC 23 KEY2 24 KEY1 Checking order 25 GND 1.Check IR cable condition between IR & Main board.(Check picture number① and ②) 2. Check the standby 3.5V on the terminal 16 pin (③) 3. AS checking the Pre-Amp(IR LED light) , the power is in ON condition, an Analog Tester needle should move slowly, otherwise, it’s defective. A23 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom D. Function error date Revised Content Remote control operation checking method date A24 Pin Pin name 1 +3.5V_WIFI ① Wifi & BT Front 2 WIFI_DM_JACK ③ 3 WIFI_DP_JACK 4 5 WOL/WIFI_POWER_ON_JACK 6 +3.5V_WIFI 7 COMBO_RESET_JACK 8 9 BT_WAKEUP_DEVICE_JACK 10 BT_WAKEUP_HOST_JACK 11 Wifi & BT Rear 12 13 14 15 16 EYE_SDA_JACK 17 EYE_SCL_JACK 18 19 IR_JACK 20 LED_R_JACK 21 ② 22 +3.5V_ST Checking order to check motion remote/wifi 23 KEY2_JACK 24 KEY1_JACK Checking order 25 1. Check BT/Wifi cable condition between BT/Wifi assy & Main board. 2. Check the 3.5V on the terminal 22 A24 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom E. Etc date Revised Content How to use the Service remote control date A25 1. How to access the remote control 0 4 1 3 0 4 1 3 A25 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom E. Etc date Revised Content How to use the Service remote control date A26 2. Remote control part definition POWER Power On/Off [ETC] Each time pressing the KEY button, Mode gets changed to ETC and P-ONLY each time ETC (Added Function) All KEY function [PIP PR-][PIP PR+][SWAP] [PIP INPUT][DVI] KEY Function Changed to factory mode P-ONLY (Added Function) All KEY function &[INFO][STILL][HDMI HOT][USB HOT][HDMI4] KEY Action INPUT Change to the external device mode ARC Change in the order of 16:9=>Zoom1=>Zoom2=>Cinema Zoom=>Aucto Screen=>4:3=>16:9 Changes in the order of Bright Picture=>Easy Picture=>Cinema=>Spots=>Game=> PSM Custom PIcture1=>Custom Picture2=>Bright Picture SSM (Added Function) Standard(user)=>music=>cinema=>sports=>game=>standard(user) PIP Picture In Picture is activated TEXT Access to the Power Only mode CAP Broadcasting caption(on/off) MPX Stereo mode (mono, stereo, foreign language) access Used when in factory mode Simplink (Added Access to the Simplink-connected device Function) Digital EYE function ON/OFF EYE For some Model, access to the Test Pattern TILT Used for screen tilting change (Access to the old PDP control mode) A26 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom E. Etc date Revised Content How to use the Service remote control date A27 B-TOOTH Connected to Blue-Tooth (Added function) Model Nam ex) 42PG60D-NA Current Model Name S/W Version ex) IN-START V03.11.0 Current S/W version MICOM Version ex) V3.05.0 current Mi-Com version UTT ex) User TV total usage time POWER OFF STATUS ex) Shows power-off status ADJ Test Pattern (Off=>White=>Red=>Green=>Blue=>Black=>Pattern=>Off) Change X-STUDIO (Added function) HDD,USB, external device’s HDD screen is activated MENU User function gets activated EXIT Exit from the current mode TIME SHIFT (Added Moves forward/backward of recorded contents function) MUTE Mute function (0 Volume) IN-STOP SET to factory mode VOL + - Volume Up/Down CH + - Channel Up/Down AV1,2,3 (Added function) Connects to external input 1,2,3 COMP1,2 (Added function) Connects to Component 1,2 HDMI1,2,3,4 Connects to HDMI 1,2,3,4 (Add function) DVI (Add function) Connects to DVI A27 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom E. Etc date Revised Content Check items after Main B/D replacement date A28 Check items afer Main B/D(Model Number D/L, White Balance) 1. Press the Service remote control instart Key. No.7 Select Model Number D/L - Key in the model name and serial number after checking the ID label on the back cover. 2. Press the Service remote control ADJ Key. No.13 Select White Balance - Record the R, G, B (GAIN, Cut) value of the color temperature before main board replacement. A14 After replacing the main board, key in the recorded value. A28 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom E. Etc date Adjustment Test pattern - ADJ Key Revised Content date A29 You can view 6 types of patterns using the ADJ Key Checking item : 1. Defective pixel 2. Residual image 3. MODULE error (ADD-BAR,SCAN BAR..) 4.Video error (Classification of MODULE or Main-B/D!) A29 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Standard Repair Process Detail Technical Manual Error Established symptom E. Etc date T-Con PMIC voltage measurement point Revised Content date A29 Test Point and Volt Spec T-Con PMIC measurement Point Test Spec [Unit:Volt] N Test Spec Min(-5%) Max(+5%) o name 1 VTERM 1.2V 1.14 1.26 2 VCC18 1.98V 1.88 2.08 3 VCOM1 5.33V 5.06 5.60 4 VCOM2 5.33V 5.06 5.60 5 P VGL -7V -6.65 -7.35 6 LS VGL -15V -14.25 -15.75 7 VGH 30V 28.50 31.50 8 VST -15V -14.25 -15.75 ⑦VGH ⑤P VGL 9 VGH EVEN 28V/- 26.60 / - 29.40 / - ⑥LS VGL ③VCOM1 15V 14.25 15.75 ⑦⑥ ⑤③ 10 VGH ODD 28V/- 26.60 / - 29.40 / - ②① ②VCC18①VTERM ⑫LS VGL 15V 14.25 15.75 ⑩ ⑩VGH ODD⑨⑧ ④ ⑭⑬⑫⑪ ⑪PM VCC ⑭VDD EPI ⑧VST 11 PM VCC 5V 4.75 5.25 ⑬HVDD ⑨VGH EVEN ④VCOM2 12 LS VGL PMCI-15V JIG Point -14.25 -15.75 13 HVDD 8.23V 7.82 8.64 14 VDD EPI 16.8V 15.96 17.64 A30 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Smart JIG Power Diagnosis Muitl Gender Guide (P/N : RAD32507801) (P/N : RAD33187801) A 31 (1/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Power Board Muitl Gender JIG Diagram (P/N: RAD33187801) 15Y 16Y 15Y (LF/UF Series) (OLED B6) (OLED) 28Pin 24Pin 24Pin 24Pin NC 18 Marking check 24Pin 18Pin 16Y New JIG (OLED) 24Pin 13Y/14Y 28Pin No Marking OLD JIG 17Y/18Y C8 (OLED) 24Pin 12Y E8 24Pin 32LK62 43/49LK61 SK85/SK96 SK95/SK99 UK63/UK64 UK65 16Y/17Y/18Y 18Pin (UH/UJ/SK) UK75 24 Marking Check 28Pin UK78 28Pin 12Pin 12Pin 28Pin Cable Connection Includes 49UJ63 17Y/18Y 16/18Y 16Y/17Y/18Y 16Y/17Y 16Y (SJ/UJ/SK) (UH/UK) (LH/LJ) (UH/SJ) (UH) A31 (2/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Power Board Muitl Gender JIG Diagnostic model List Existing 12Y, 13Y, 14Y, 15Y LED models included 15Y, 16Y, 17Y/18Y OLED, 16/17/18 Y LED model Power diagnosis function newly added <15Y/16Y/17Y/18Y OLED Model, 16Y/17Y/18Y LED Model> Year Product Model EG92/EG93/EG94 ‘15 OLED EG96 EF95 B6, C6 OLED E6, G6 UH95/UH96 ‘16 UH85/UH93 UH77/UH87 LED UH75/UH76 UH65/UH68 LH68, LH66, LH60,LH54 B7, C7 ‘17 OLED E7, G7 W7 SJ95/UJ98 SJ85/UJ94 SJ80, UJ77 UJ75/UJ78 ’17 LED UJ65/UJ68 UJ63/UJ67 LJ61/LJ68 LJ55/LJ58 SK95/SK85 SK81/SK80 ‘18 LED UK78/UK75 UK63/UK64/UK65 32LK62, 43/49LK61 C8 ‘18 OLED E8 A31 (3/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Power Board Muitl Gender How to Connect 1 ▶ Power Board Muitl Gender JIG 2 “A: 2013 LCD POWER” 2014 ▶ Connect the Muiti Gender to the connector (black) as shown in picture 2 of the Smart JIG. A31 (4/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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Smart Jig Voltage Setting 1 2 ▶ Switch the product S/W in JIG to LCD. ▶ LCD MODEL Check the power voltage ▶ Check power board voltage. and switch to the correct voltage. ※ Note on set up (The correct power diagnosis can be made only if it is set correctly.) - 24V Power Board : Change the switch to 24V of Smart Jig Voltage - 20V Power Board : Change the switch to 24V of Smart Jig Voltage - 13.2V/18V Power Board : Change the switch to 24V of Smart Jig Voltage Power B/D Smart Jig Voltage Switch 24V 24V 20V 20V 13.2V/18V 24V A31 (5/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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`15Y OLED(EG96,EF95,EG92,EG93,EG94) Power Board Diagnostic method (1) 1 2 ▶ Switch the product S/W in JIG to LCD. ▶ LCD MODEL Check the power voltage and switch(24V) to the correct voltage. ▶ Check power board voltage. ▶ Fix the LCD MODEL switch to 24V.(Smart JIG) 3 4 ▶ Disconnect the Main Board 24Pin Power Cable connector. ▶ Connect the 24Pin Power Cable connector to the Muitl Gender JIG 24Pin connector A31 (6/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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`15Y OLED(EG96,EF95,EG92,EG93,EG94) Power Board Diagnostic method (2) 5 6 ▶ When the OK LED(24V,12V) turns on, Power Board is normal. ▶ When the NG LED turns on, the Power Board can be judged as defective. A31 (7/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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`16Y OLED(B6) Power Board Diagnostic method 1 2 ▶ Switch the LCD MODEL S/W to 24V by checking the power voltage. ▶ Fix the LCD MODEL switch to 24V.(Smart JIG) ▶ Connect the 24Pin Power Cable connector to the Multi gender JIG 24Pin connector. 3 ▶ When the OK LED(24V,12V) turns on, Power Board is normal. ▶ When the NG LED turns on, the Power Board can be judged as defective. A31 (8/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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`16Y OLED(C6) Power Board Diagnostic method 1 2 ▶ Check power board voltage. ▶ Disconnect the Main Board 24Pin Power Cable connector. ▶ Smart JIG: Fix the LCD MODEL switch to 24V.(Smart JIG) 3 4 ▶ Connect the 24Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal. to the Muitl Gender JIG 24Pin connector A31 (9/19) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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`16Y OLED(E6) Power Board Diagnostic method 1 2 ▶ Check power board voltage. ▶ Disconnect the Main Board 24Pin Power Cable connector. ▶ Fix the LCD MODEL switch to 24V.(Smart JIG) 3 4 ▶ Connect the 24Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal. to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board A31 (10/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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`16Y OLED(G6) Power Board Diagnostic method 1 2 ▶ Check power board voltage. ▶ Disconnect the Main Board 24Pin Power Cable connector. ▶ Fix the LCD MODEL switch to 24V.(Smart JIG) 3 4 ▶ Connect the 24Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal. to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board A31 (11/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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`17Y OLED(B7/C7/E7/G7) Power Board Diagnostic method 1 2 ▶ Disconnect the Main Board 28Pin Power Cable connector. ▶ Connect the 28Pin Power Cable connector to the Muitl Gender JIG 28Pin connector 3 4 ▶ Switch the LCD MODEL S/W to 20V by checking ▶ When the OK LED(24V,12V) turns on, Power Board is normal. the power voltage. ▶ When the NG LED turns on, the Power Board ▶ Fix the LCD MODEL switch to 20V.(Smart JIG) A31 (12/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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`17Y OLED(W7) Power Board Diagnostic method 1 2 ▶ Disconnect the Main Board 24Pin Power Cable connector. ▶ Connect the 24Pin Power Cable connector to the Muitl Gender JIG 28Pin connector 3 4 ▶ Switch the LCD MODEL S/W to 20V by checking ▶ When the OK LED(24V,12V) turns on, Power Board is normal. the power voltage. ▶ When the NG LED turns on, the Power Board ▶ Fix the LCD MODEL switch to 20V.(Smart JIG) A31 (13/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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`16Y/`17Y LED 18Pin Power Board Diagnostic method 1 2 ▶ Check power board voltage. ▶ Disconnect the Main Board 18Pin Power Cable connector. ▶ Fix the LCD MODEL switch to 24V.(Smart JIG) 3 4 ▶ Connect the 18Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal. to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board A31 (14/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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`16Y LED(UH95/UH96) Power Board Diagnostic method 1 2 ▶ Check power board voltage. ▶ Disconnect the Main Board 28Pin Power Cable connector. ▶ Fix the LCD MODEL switch to 24V.(Smart JIG) 3 4 ▶ Connect the 28Pin Power Cable connector ▶ When the OK(24V,12V) LED turns on, Power Board is normal. to the Muitl Gender JIG 28Pin connector ▶ When the NG LED turns on, the Power Board A31 (15/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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`16Y/`17Y LED(UH85/UH93) Power Board Diagnostic method 1 2 ▶ Check power board voltage. ▶ Disconnect the Main Board 28Pin Power Cable connector. ▶ Fix the LCD MODEL switch to 24V.(Smart JIG) 3 4 ▶ Connect the 28Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal. to the Muitl Gender JIG 28Pin connector ▶ When the NG LED turns on, the Power Board A31 (16/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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`16Y/`17Y LED 12Pin Power Board Diagnostic method 1 2 ▶ Check power board voltage. ▶ Disconnect the Main Board 12Pin Power Cable connector. ▶ Fix the LCD MODEL switch to 24V.(Smart JIG) 3 4 ▶ Connect the 12Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal. to the Muitl Gender JIG 12Pin connector ▶ When the NG LED turns on, the Power Board A31 (17/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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`16Y LED 12Pin Power Board Diagnostic method 1 2 ▶ Check power board voltage. ▶ Disconnect the Main Board 12Pin Power Cable connector. ▶ Fix the LCD MODEL switch to 24V.(Smart JIG) 3 4 ▶ Connect the 12Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal. to the Muitl Gender JIG 24Pin connector ▶ When the NG LED turns on, the Power Board A31 (18/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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`17Y LED 28Pin Power Board Diagnostic method 1 2 ▶ Check power board voltage. ▶ Disconnect the Main Board 28Pin Power Cable connector. ▶ Fix the LCD MODEL switch to 20V.(Smart JIG) 3 4 ▶ Connect the 28Pin Power Cable connector ▶ When the OK LED(24V,12V) turns on, Power Board is normal. to the Muitl Gender JIG 28Pin connector ▶ When the NG LED turns on, the Power Board A31 (19/19) can be judged as defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes

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