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LED TV SERVICE MANUAL

1. mm i emm EL OPT 4 1 _ nn emm i emm 3 3 Normal 42 5V Normal 43 3V Norma Memory td LOVE VDDG DDC 1 O5 1 10V_VDDC MODEL OPTION a S A PIN NO U23 v r 0 v lt D VDDC mA ad bai N M B 2 T 0 e SS uot 128M E S a S gt E a PHM OFF ON 2 5 5 gA g9 g 9 E S
2. d 3 3V Normal cL et 3 EE A Boot from SPI CSIN EXT_FLASH 1750 A H p S7LR M NON MS10 Sg NC 29 Boot from SPI_CSON INT_FLASH 1 b1 NAND_FLASH_1G_SS IC101 c_2 EAN61857001 NC 28 MSD804KKX e c 3 NC 27 EOM pos lt CHIP Config gt eu ELA I2S_OUT_BCK I2S_OUT_MCK PAD_PWM1PAD_PWMO PEMDIO TI B51_no_EJ 4 b0000 Boot from 8051 with SPI flash PCM_D O W21 R107 R109 C 5 1707 SB51 WOS 4 bo001 Secure B51 without scramble PCM DITI AA18 0 GPIO 1K SHOK SB51_WS 47b0010 Secure B51 with scramble PC DIZ 1 GPIO Ce 1706 MIPS_SPE_NO_EJ 4 b0100 Boot from MIPS with SPI flash AB22 PEDRO ARTOS MIPS_SPI_EJ_1 4 b0101 Boot from MIPS with SPI flash PCM_D 3 AE20 R B 1 05 MIPS_SPI_EJ_2 4 b0110 Boot from MIPS with SPI flash SCHT pm 3 GPIO MIPS_WOS 4 b100
3. am AA GB GB GB GB HB A NE TCAS TA4 0 EUSCHUNA TUNER BLOCK caror var D PIN RF_SW_OPT A R2628 i SS gt FE_TS_VAL_ERR FE_TS_ERR ES Z N RF_SWITCH_CTL EB By TU 02603 Close to TUNER A I 2 0 1uF am GB GB GB GB GB BD TU 6 0 3 TU2 6 O 2 TU2 6 0 1 Er GPIO must be added TDSS G501D TDSO G601D TDSO G50 LD e a mmm Sieg Vis 100 e TUNER RESET C2622 0 Tur TU T2 FILTER E e MLG1005SR27JT ER_T C_H NI ER_T2 C S2_F NIM ER_T C S2_F NI Fre mor m B NC NC 1 NC 1 TU 12C FILTER R2607 0 e e e MLG1005SR27JT OPT RESET RESET RESET ARN R2615 R2620 e e SCL SCL SCL EE 3 3V TU 3 3V_TU e TU2604 e e e e TU SCL A I I TU I2C NON FILTER EN SDA C6 0 SDA SDA a Sac NEO MN e IDSM 1D e e C2607 9 C2612 BEE TUSDA 72 82708108 R2619 E je cs 3 3V B1 3 3V B1 3 3V ES uiae 20pF Tier 82 E e e SR Ge SE 02621 9 c2623 CLOSE to TUNER T2_C_S2 CHINA EA ALIF N SIF NC 2 aa ee d CO 220 SS ze sov 16v 02600 T2_C_S2 CHINA T2 C_S2 CHINA B MMBT3906 NXP B E sz E e 1 8V B2 1 8V B2 1 8V AFLSOV TO d J R2616 SPY c S27CHINA 4 7K zj e Teo BUT o en tole sach f e gt TU_CVBS ALIF_ P CVBS CVBS NC_3 100pF 0 1u
4. ETHERNET C2104 0 01uF e 50V THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET I El ECTRONICS MUDEL DATE ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR BLOCK tow THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE scuemetic LG Electronics BLLLK EN SHEET Copyright 2013 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes
5. A Video error ziii 2013 01 09 ate First of all Check whether all of cables between board is inserted properly or not Main B D Power B D LVDS Cable Speaker Cable IR B D Cable i A1 Ge AA Check Back Light Y Check Povver Board Replace T con Board On with naked eye 24v 12v 3 5v etc or module N mA Check Power Board 93 2 118 5V v output Repair Power Board or parts Precaution rs AG 8 A3 Always check amp record S W Version and White Balance value before replacing the Main Board H Replace Main Board Re enter White Balance value Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process j Established LCD TV Error A Video error 5613901009 symptom Check various voltages Check and No Video M m replace No audio 3 5V 12V 20V or 24V MAIN B D Replace Power Board and repair parts Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Established symptom mp Picture broken Freezing 3 14 By using Digital signal level meter By using Diagnostics menu on OSD Check RF Signal level Menu Set up Support Signal Test Signal strength Normal over 50 Signal Quality Normal over 50 gt A5 Check whether other equipments have
6. GIN2M 4 7 luF 0 1 Y anke ls Si 8 010 R241 33 c222 40 047u8 vi AES er UF ep Up 10uF lt a 10uF NEST NS ses e PR 00000 COMP2_Pb BIN2P NT 10 erem e 7 011 8 R242 68 C223 10 0470 W3 AC6 olo e Runde e BIN2M E 8 U12 J C224q41000pF wi Se e e GND 17 me SOGIN2 H P OUT 9 U13 4 AAG L203 5 6uH HEAD PHONE Se e GND_18 EARPHONE OUTL Fee mE ZEN OSEE ER T HP_LOUT E ER 3 urg CVBS n OUT F_NIM CHINA F_NIM CHINA m mE HP ROUT j e GND 19 EARPHONE OUTR 00 L J H8 015 R244 33 C225110 047uH AAS SS a o e GND 20 T em EU R245 33 2c226410 047uF v4 CNRS C268 C272 N22 e 016 SC1_CVBS_IN CVBS1 4 7uF 4 up N21 U17 R246 33 C227 10 0470 WA c6 J pay np ms SE e GP E COMP2_Y AV_CVBS_IN aas CYBS2 RP SS EE d N20 E R18 CVBS3 TP GP EPHY TP M22 v9 E E E e G NC 5 v10 AAA A6 p M21 NC 7 RN GP K l EPHY_R M20 v11 Y6 c4 emm em wm o o mm e aar S E SOC_RESET F10 o v12 DIV MNT_VOUT gt EE M v15 V14 C203 TN GP gt EPHY_T aaa Zeng gege a Jeng hee mm St UM eeng ng Zeen mm wie v17 1000pF R252 68 C233 440 047uF Yana c3 POWER_DET_RESET 43 5V ST e E e Il GP DY SHICH G SS EN ao A3 ED EN See SH SS in 1 vej GP URSA_SDA JTP 1127WEM mee lle T18 E8 Close to MSTAR 2 B3 E Se STby 3 5V 43 E BA 7 3 5V_ST 1 10V_VDDC LED
7. up opt R453 U 27 16v 13 OPT R491 S 0 d Ee 12V CHANGE TO 5V USB 16V X5R C417 Eap_10uF_X5R A l0ur CHANGE TO 10V pd 3 LOV 1007 10v x5R CIC21J501NE US e t5V Normalt3 3V Normal A hd 1C401 es R TPS65281RGV i det SEN OPT DY USB1 OCD 100K e Kl USB1_CTL SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR SYMBOL MARK OF THE SCHEMETIC THE CRITICAL COMPONENTS IN THE NN WHEN SERVICING IF 15 Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes 417 1 10uF 10V CAP L up X7R SECRET LGElectronics ap D GB A GB P GB A GB GB GB A A GB GB A GB GB GB GD GB GB GB A GB GB GB GB GB A aR BD Qe ams am m D GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB A POWER DETECT 2 as A ce P a A A P P P GB GD A A P A A P P P P GB A GD GB P GD GB GB BD GB A PANEL POWER 12v L412 Q409 AO3407A E en iO PANEL VCC T G A B Q407 MMBT3904 NXP 120 CIS21J121 PANEL CTL 001 AL22 am GRP GP GP GP GP GB GB GB GB GE GB B N a lt e as ap ap AO AO vm AO BD GB vm vm emp am em em m m ap ap ap ap ap ap ap D ap BD BD G
8. AD2 9 2 x J14 gt IF AGC MAIN G ET AE2 G C285 wo 516 m 0 047uF AVDD2P5 e DD2P5 ADC 1 G 1 Lov Wie i i TES AEG TUNER I2C gt NON DVB T2 W11 J19 12C_SCKM1 GP1078 gt TU_SCL E SE DD2P5_ADC_3 G E BE TU SDA A AR ES DD2P5_ADC_4 G 12C_SDAM1 GP1I079 5 LI a ed Close to MSTAR G 3 G 0261 27pF DD25_LAN ADI e Ze vis T AC1 N L x201 AVDD2P5_MOD e DD MOD 1 G Ls 24MH U19 E 8 R5 PP Z 0262 27pF DD_MOD_2 G pj PM MODEL OPT 1 LUGD GPIO25 A _MOD_ B G 2 AE9 D7 OPT R297 0 22 CK _HDMI4 aco RXCCKP sPDIF IN GPIO150 77 SE e gt CI DET T E CK HDMI4 gt SE SC acio RXCCKN SPDIF_OUT GPIO151 pei once gt SPDIF_OUT AVDD25_PGA wis NCS G R AA G DO _HDMI4 Ge SC apo RXCOP SIDE USB ces ie mn nn co geng AVSS_PGA NC 4 ES mue nin mund G DO HDM 40 gt RXCO Normal 2 5V 07 L12 AC11 E3 AVDD NODIE lt DD NODIE G D1 _HDMI4 RXCIP USBO DM L13 AD10 E2 G er 4C agi Leck USBO_DP 2 5V_Normal AVDD2P5 LI Bh e ELE E L18 AD11 AC12 DD DVI USB 2 G D2 _HDMI4 gt ass RXC2 USB1_DM eeee SIDE USB1 DM L211 AVDD2P5 172mA co e TT 8 DDC SDA 4 DDCDC DA GPIO31 USB1 DP SIDE USB1 DP BLM18PG121SN1D R7 DD3P3 MPLL G 8 AD8 x er Jee os AVDD DME LL DD_DMPLL G DDC SCL 4 ca ace PPEPE CK eP 1030 gt AMP_SCL E o mum 0 G HPD4 lt HOTPLUGC GPIO24 AMP_SDA CHANGE T s inp S i ER R213 E 10UF 10V X5R 3 rn SI DD NODIE
9. I I i I I I i I I I I I I I I 3 CI TS INPUT e ap m GB GD GB GB GB GB GB GB GB GD GB GB GB GB A GDB GB GB GE A AR1905 33 CI MIVAL ERR CI MCLKI 5V_CI_ON FE TS DATA 7 ATE CI DATA 0 7 CI MDI 7 Ee CI MDII6 lt E TS DATA 6 z GEES E_TS_DATA 5 n T 08141 lt E TS DATAJA E E e e lt 5V Normal n AR1906 33 4 dl 6906 e CI MDI 3 lt E TS DATA 5 E 10V E CI MDI 2 lt E TS_DATA 2 p o R1903 S ci MBII 1 CA E TS DATAJ1 LOK 4
10. OPT R3405 0 SPK ee POWER DET SPK L gt eo SPK R es SPK R gt es IHE AN SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR E THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE scuemetic LG Electronics Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes MODEL nca 57559 DATE BLOCK fue_stassoswe SHEET LGE Internal Use Only LG ELECTRONICS MSTART DEBUG 4PIN MSTAR_DEBUG_4P P3900 12505WS 04A00 JP_GND1 JP_GND2 JP_GND3 JP_GND4 LLT gt RGB DDC SCL RGB_DDC_SDA THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE NN SYMBOL MARK OF THE SCHEMETIC GElectronics Copyright 2013 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes LG ELECTRONICS DATE my BLOCK ras 00006 SHEET A TA e RS232C_DEBUG_4P P4000 12507WS 04L R4001 100 PM_TXD Ki R4000 100 PM RXD C IHE SYMBOL MARK OF THIS SCHEMETIC DIAGRA
11. al e Y 1 d Ad A SENO Dojeuy AIS ALY a al099 0sal Bojeuy oepiA AIV pL LGE Internal Use Only 17 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes 3 LD36B DVB TIC 2D EVENT 87917 t VSNT 0 VGSNT1 Do 1 MOS anv NOT anv f HOWT anv 4 e asn 9pIS I YSLSVW ANV Nada a L u aa gt gt Y 1AdS On THIN YM CIINGH ZOWLVG SL 0lvIVd SL 33 LINGH L olviva Nod IL elv Nod D ass A NI SAAI LOS Hb vos E Jlads med 0lv Nod Je y juauoduoo Dz ST d ad A SEND Km a EE nn en an a CH edad PPV COOC IZINS0091S2XIN q NB OOELII HSV13 VIHIS 1197 901099 ssal qe dDIalv Wz yaa p 40 419 Id4 LGE Internal Use Only E m Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes EXPLODED VIEW IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by A in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X RADIATION Shock Fire or other Hazards Do not modify the original design with
12. 9 i908 era 6000 1485 ner DTV 6 120720 4496 mn 74176 HDIV720P 8 192010800 oam 6000 7425 jJHDIV1080 9 19201000 3372 5994 74176 X HDIV1080 148 352 1920 1080 26 97 23 976 74 176 HDTV 1080P 1920 1080 33 75 30 00 74 25 HDTV 1080P Copyright O 2013 LG Electronics Inc All rights reserved B LGE Internal Use Only Only for training and service purposes 6 Video resolutions 3D 6 1 HDMI Input 4 toe es oo 1465 mmer Side by Set Top and botom 0 emm Jas Ia on mmer _ Side by Sidetraln Top and Botom emm e razas mme Side by Siena Top and Botom o emm 29125 a vazas HOIV108 Side by Sidetraln Top and Bottom 6 2 RF 3D Input DTV H freq kHz V freq Hz Pixel clock MHz 3D input proposed mode 1280 720 37 500 74 25 HDTV 720P Side by Side Top amp Bottom 1920 1080 _ 28 125 74 25 HDTV 10801 Side by Side Top amp Bottom 6 3 USB Input H freq kHz V freq Hz Pixel clock MHz 3D input proposed mode 1920 1080 _ 33 75 30 000 74 25 He esp amp Bonom suppan MPO Photo 6 4 DLNA Input H freq kHz V freq Hz Pixel clock MHz 3D input proposed mode 1920 1080 33 75 74 25 HDTV 1080p Side by Side Top 8 Bottom 6 5 3D Input mode Side by Side Top amp Bottom Single Frame Sequential Frame Packing Copyright 2013 LG Electronics Inc All rights reserved 9 LGE Internal Use Only Only for training and service purposes
13. AR1912 33 CI_ADDR 8 lt PCM A 8 CI_ADDR 9 lt PCM A 9 CI ADDR 10 X PCM A 10 CI_ADDR 11 lt PCM_A 11 5V_Normal 1C1903 AP2151WG 7 45V CI ON 11902 AR1913 33 BLM18PG121SN1D CI_ADDR 12 lt PCM_A 12 e e AVV CI ADDRI13 PCM A 13 CI ADDR 14 amp 1 PCM A 14 REG PCM_REG 01910 R1922 R1914 lur 100 25V PCM SV CTL AR1909 33 i p CI_ZOE X PCM_OE K a M CI WEX 1 PCM WE CI IORD lt PCM_IORD z zi CI_IOWR lt PCM_IOWR THE SYMBOL MARK OF THIS SCHEMETIC SPECIAL FEATURES IMPORTANT FOR PROTE FILRE AND ELECTRICAL SHOCK HAZARDS ESSENTIAL THAT ONLY MANUFATURES SPEC I DIAGRAM INCORPORATES CTION FROM X RADIATION WHEN SERVICING IF 15 FIED PARTS BE USED FOR SECRET DATE LG ELECTRONICS THE CRITICAL COMPONENTS IN THE NN SYMBOL MARK OF THE SCHEMETIC BLOCK pemcr SHEET LGE Internal Use Only LGElectronics Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes ETHERNE H W option ETHERNET 2 5V_Normal A ETHERNET L2101 E JK2100 1 JK2100 BLM18PG121SN1D RJ45VT 01SN002 XRJV 01V 0 D12 080 EPHY TP us TO EPHY TN ETHERNET_XML_EMI ETHERNET_XMULTIPLE gt EPHY RP EPHY RN
14. EAN61829203 VREFCA R 1600 2G HYNIX IC1201 4 L O2G63DFR PBC MI M9 PI E TI T9 DD EAN61829203 VREFCA LG ELECTRONICS DDR_1600_1G_SS IC1202 K4B1G1646G BCKO M8 HL B2 D9 K2 K8 NI NS RI EAN61836301 EAN61859702 VREFCA EAN61859702 VREFCA 3 B MA0 C lan VREFCA B MVREFCA D B MA1 C ag ES B MA2 lt gt 22 B MA3 lt g A3 VREFDQ B MVREFDO D B MA4 lt _ seg 44 2 DDR B MA5 lt Se A5 R1226 B MA6 lt z 26 R PEMAI Te EC Ji AVDD_DDRO B MA8 lt R3 A8 c es A B MA9 lt A9 V e B MA10 C A1o ar v e C1227 louF NOV R7 2 ppRC1228 0 1uF B MA11 All V o e 7 2 ppRC1229 0 1uF B MA12 A12 BC V e T3 2 DDR1230 0 1uF B MA13 lt A13 V o e 2 DDRC1231 0 1uF V e 7 2 DDRC1232 0 1uF V e 2 DDRC1233 0 1uF V gt e M2 2 DDRC1234 0 1uF B MBAO lt V e B MCK 8 2 DDR1235 0 Tur B MBA1 lt eo e or M3 2 DDR1236 O 1uF no B MBA2 lt eo e 2 DD N 97 Oi 50V Ka preg N p ZB MCKE lt B MCKB lt L2 1 B MODT lt 3 J AVDD DDRO B MRASB lt S A B MCASB lt E R1232 B MWEB lt 10K T2 2 DDR B MRESETB Q e F
15. 5 The receiver must be operated for about 5 minutes prior to the adjustment 4 Model General Specification 1 Market EU PAL Market 37 Countries DTV amp Analog Total 37 countries DTV MPEG2 4 DVB T 37 countries UK Italy Germany France Spain Sweden Finland Neth erlands Belgium Luxemburg Greece Denmark Czech Austria Hungary Swiss Croatia TurkeyNorway Slovenia Poland Ukraine Portugal Ireland Morocco Latvia Estonia Lithania Rumania Bulgaria Russia SlovakiaBosnia Serbia Albania Kazakhstan Belarus DTV MPEG2 4 DVB T2 8 countries UK Denmark Sweden Finland Norway lreland Ukraine Kazakhstan DTV MPEG2 4 DVB C 37 countries UK Italy Germany France Spain Sweden Finland Nether lands Belgium Luxemburg Greece Denmark Czech Aus tria Hungary Swiss Croatia TurkeyNorway Slovenia Poland Ukraine Portugal lreland Morocco Latvia Estonia Lithania Rumania Bulgaria Russia SlovakiaBosnia Serbia Albania Kazakhstan Belarus DTV MPEG2 4 DVB S 29 countries Italy Germany France Spain Netherlands Belgium Luxem burg Greece Czech Austria Hungary Swiss Croatia Turkey Slovenia Poland Portugal Morocco Latvia Estonia Lithania Rumania Bulgaria Russia Slovakia Bosnia Serbia Albania Belarus Supported satellite 22 satellites HISPASAT 1C 1D ATLANTIC BIRD 2 NILESAT 101 102 ATLANTIC BIRD 3 AMOS 2 3 THOR 5 6 IRIUS 4 EUTELSAT W3A EUROBIRD 9A EUTELSAT W2A HOTBIRD 6 8 9 EUTELSAT SESAT ASTRA 1L H M KR ASTRA 3A 3B BADR 4 6 ASTRA
16. 6 Click Run 7 After downloading check OK message MStar ISP Utility Y4 3 7 Source File DAD le ODE IV Blank HDCP Key Y ReConnect M Read File e Checksum i Restore Data I i M Multi Flashes V Erase Device All Chip I C File Area C Erase Area First KBytes l i up C Partial Erase Sr IV Program V Verify IV Exit ISP USB 390KHz USB DOVVNLOAD 1 Put the USB Stick to the USB socket 2 Automatically detecting update file in USB Stick If your downloaded program version in USB Stick is Low it didn t vvork But your dovvnloaded version is High USB data is automatically detecting 3 Show the message Copying files from memory 4 Updating is starting TV Software Upgrade ED TV Software Upgrade COMPLETED UPGRADING mm Goni seet Do not unplug The TV will restart automatically in Iseconds 5 Updating Completed The TV will restart automatically in 5 seconds 6 If your TV is turned on check your updated version and Tool option explain the Tool option next stage If downloading version is more high than your TV have TV can lost all channel data In this case you have to channel recover if all channel data is cleared you didn t have a DTV ATV test on production line LGE Internal Use Only After downloading have to adjust Tool Option again 1 Push IN START key in service remote control 2 Select Tool Op
17. AV2_CVBS_DET e AA25 1C104 1 R174 R177 DAE cd 2 erent 5 ES CO RXB4 AA o 10K TOK Between EU and NON EU EE RIEX24256BSASOA S W_TAIWAN HD_LVDS_NON_EU gt RXB4 PM MODEL OPT 1 AE24 Si ne A0 vee PM MODEL OPT 0 H GH E A WAN p O RXACK I gt RXACK LOW EU AJ Y23 E SCE E R111 22 Al WP e PM MODEL OPT 1 gt RXBCK 1 12C_ScL GER NG Other DO RXBCK R175 i AER SDA y 2112 22 Ser aay A2 se TOK REIG for 1 Binary S W EU AJ ADEVDS_EU MODEL_OPT_3 C104 C106 023 Spr Spr vss SDA 6 SC MODEL OPT 4 OPT OPT SC MODEL_OPT_5 THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION e eee SECRET LG ELECTRONICS ODEL THE CRITICAL COMPONENTS IN THE NN SYMBOL MARK OF THE SCHEMETIC LG Electronics ULK HEET Copyright 2013 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes MODEL OPTION Memory OPTION
18. EX ES 3 Ss 7 Im E E c 3 a a d B a a a NON_DVB_T2 DVB_T2 128M 128M EM Oo e 9 9 9 oi Dei o ol 4 oo a N 3 1 1 1 d 2 ale al gt o m sja sje A a aff gj gje SA NON_M120 M120 Ee SE s el ej 8 elo a a dx S Pa 8 a e i 5 e MODEL OPT 0 r UO 128M TUO 256M e 256M 128M R203 100 e MODEL OPT 1 e BS NON_DVB DVI RF SWITCH CTIK 0 MODEL_OPT_2 REZOWCOEL MODEL OPT 3 MIU1 NO_DDR U1 128M et SET ng X pes Dec PUR teet toe bene ES MODEL_OPT_4 Moven OPTS NON DUAL STRI DUAL STREAM IC101 MODEL_OPT_6 de MSDSOAKKX SYM E x m MODELIORT Dual Stream is only Korea 3D spec PEDO VEVDDE 5 z o N a A A a d a I N P x lt A 2 m 5 z m a Close to MSTAR DIV ATV IF 2 z A z a x 2 R288 100 C257 0 1uF Normal Power a AS K12 G10 A a x o as Es e IF P MSTAR DDLV USB G ali E Al E E si E E NON_DVB_T2 ON_DVB_T2 3 SY Normal VDD33 G Ay Be aerden E NN GEL 08072 e shet E ei o sr wh IF_AGC_SEI aa Cer ae GJ alba 100 258 0 1uF T a did L204 DC 2 G N N N N N N N Nj m R289 C lu LNA2 CTIK gj 8 o ala a o lt IF_N_MSTAR BLM18PG121SN1D C284 1 EM pc 3 G E z z a E z e I NON_DVB_T2 ON
19. Fix in accordance with technical information Replace Main B D DVI Optical Recognition erre Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Established Error date 2013 01 09 symptom SOU Circuit noise mechanical noise 1314 Replace PSU with LED driver Identify Check location for nope Ube sia Replace LED driver Check location of noise When the nose is severe replace the module D E estes aida For models with fix information upgrade the S W or phenomenon and apply the 1st level e description VVhen the customer does not agree eg the process by stage If there is a Tak Tak noise from the cabinet Describe EE description in refer to the KMS fix information and then proceed Part related to nose in the Owner s Manual AS SNOWN IN me SOROR manda For models without any fix information provide the description Copyright O 2013 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Established Error F Exterior defect 2013 01 09 Zoom part with exterior damage gt Replace module Replace cabinet gt Replace remote controller Replace stand Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal
20. LNA CTRL 2 lt A FE TS DATA 5 1 16W FE TS DATA 6 D7 D7 DI FE_TS_DATA 7 SAS l e e B R2632 GND_2 GND_2 CHINA 1 e J AR2603 1 Al CND 3 CND 3 bs 0 s 12600 A i c 02641 02642 T B3 1 23V B3 1 23V BLM18PG121SN1D e Vo VREF 1 R2 R1 0 tur 1090 LE cL oo V e AU EF lov MT Toss DVB S VREF 1 25V AP_10UF_X5R cap 10uF_X7R S2 T2 RESET S2 RESET C2608 co611 2615 E A 100pF Que 10uF 50V 16v 6 3V B CAP 10uF X7R FNIM CHI B4 3 3V B4 3 3V GU AIT DVB S SM Tiu 1 52 22 OUTPUT 52 22 OUTPUT 9 i 200 En e gt LNB TX 10 S2 RESET FEES Vo 0 8 1 R2 R1 U 82712 004 522805 S mE F NIM CHIWA m o t e C2619 3 e Ee E nci fi 2 982 de 1 23V_TU i dl S2 T2_SDA S2_SDA our T EE E A Z Z e e 3 3K EN2 T e ADJ SENSE io io 1 1 DVB S DVB S e E 2 A LNB LNB DVB_S 02624 02625 I 2605 22 E H 5 DEMOD SCL Se oe GR VEND NE CH OPE GND 4 GND 4 DVB S d gt e R2604 22 DEMOD_SDA ae nea 5 No A F NIM CHINA CAP_10 nj wd A ig C2645 C2647 B1 ep Sour 16V ioy LNB_OUT i SHIELD SHIELD J Wa l a EECH 0 0 J m ea A a E a 3 3V_TU 3 3V_S2_DE A D D KB V SEU 3 3V_Normal e O IN D D DVB S A A GND seperation for CHINA tuner L2602 BLM18PG121SN1D e e A e L2606 al al C2630 CAP leur dn DvS DVB_S CIS21J121 RE wes o 1uF C2632 C2634 aL CAP_10uF_X7R_DVB_S e AY e I 10uF 0 1uF C2632 1 g
21. NC Nc PWMO C zz PWMO GPIO69 TA 4 GP1095 75 FE TS DATAI5 vee 2 vec 1 7006 2 vee 1 700 2 vee 2 as a a emm D emp emm D D D D D D PWM1 C J En PWM1 GPIO70 d GPIO96 SC FE TS DATATE pwm2 lt PWM2 GPIO71 rA 6 GPIO97 FE TS DATAT7 van 2 VSS 1 VSS 2 van 1 van 2 VSS_2 R2 heten Ss noa AD14 EGO Ls P20 a NC_22 NC_9 NC_22 NC_9 NC_22 NC 22 PWM4 GPIO73 E F6 LGE2121 MS M1_L13_MS10 LED_R BUZZ lt PWM PM GPIO197 NC 21 NC 10 NC 21 NC 10 NC 21 NC 21 i NC 20 CLE NC 20 CLE NC 20 NC 20 SIDREM MS LO H6 GPIO39 VAOP eka KEY1 E SARO GP 1 03 ALE 1 04 ALE 1 03 1 04 L AB23 KE Re GPIO40 LVAO G4 SAR2 GP 1 02 WE 1 03 WE 1702 1703 EE p WP WP GPIO42 VAL zee R164 1K JA BE 1 0 WP 1 02 WP I O 1 02 y AD25 SCART1 MUTE C SAR4 GP GPIO43 LVA2P 1724 BU 1 00 NC 11 1701 NC 11 1700 1701 PTS EENS AE23 m GPIO45 LVA3P R NC_19 NC 12 NC 19 NC 12 NC 19 NC 19 R S e ee GPIO48 LVA3 V NC 18 NC 13 NC 18 NC 13 NC 18 NC 18 GA S ERE ou AD23 SPI1 CK GPIO199 NC 17 NC 14 NC 17 NC 14 NC 17 NC 17 GPIOS2 LVA4 R25 GPIO53 T21 K NC 16 NC 15 NC 16 NC 15 NC 16 NC 16 Gei V23 122 SP12 CK GP10201 U24 SPI2 DI GPIO202 GPIO55 v25 I2C SCKM0 GPIOS56 v24 I2C_SDAMO GPIO57 w25 GPIO76 23 GP1077 o ooo o o i i i o o ooo Sl Sl n AA23 I 2 C Y24 DIMMING 3 3V_Normal AA25 AA24 S7LR M NON MS10 OPT
22. PingTest LGE Internal Use Only BLOCK DIAGRAM 1 LD31B DVB T C S2 2D 3D 9 LI9VT SALIVT GPONT O VENT HYSNI SHEN uan d H I 4 EE ss 9pIS NMAnac MOS ANY MINT ANV 19 HALSVN anv Wa da E THN WIM sou amp ZINGH ul f y 037 m Nv LINGH I I 31006 m dlddS VESH 8 9 48 Tos Sano 195 LATA I olviva SL I olviva SL 33 L oviva Wod PUOK Wod S mm 017 120 Juauoduo WT IAA SAAD I PON az JGZ NOYd33 ord LINO ENT H tada b DV edad IZWS0081SZXW SL 33 ames GA we 008191 gt 1197 e HSV14 TVI43S IdS JIS a alos9 osal 310 AIV dlG Od4 Iqeo elv Wve ES LGE Internal Use Only is Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes 2 LD31B DVB T2 C S2 2D_3D qe JO JUO MIS ANY 91 ANY HOYT anv WD YSLSVW ANV EI amp d dal I olviva SL I olviva SL 33 Z oWLVG Od PUOK Wod ree 0lv Nod IopO AZ del ejeq edad DV edad dlG Od4 l B SAINL SAINL E Wve y ES Ax L9W 1 17947 AVENT uan gt d H ege aon Opis THIN UM ZINGH rj AHdi NV I HINGH m 3100 LHVOS 4 I AlddS VESH LOS SAAI LOS E ER
23. R2825 R2834 A du GB AA GB GB GB GB GB GB GB GB BD AA GB GB GB GB GB GB GB BD 4 GB GB GB GB HB 12K D2806 L SHOK SAM e OPT alc E R2831 0 LOK e e e gt COMP2_R_IN R2826 R2833 D2807V 470K 12K 5 6V OPT ESD_COMP_ZENER_ROHM FULL SCART SQ SCART AUDIO MUTE l A 3 5V_ST I R2808 3 3V Normal 10K R2810 A DTV MNT_L_out lt SCART MUTE Ss IK R2839 SCART_MU e CT 5C1 COMP1_DET 2K R2844 EU SCART MUT 10K 02802 SCART_MUTE D2808L MMBT3904 NXP 02804 5 6VT EU MMBT3906 NXP OPT 1C2802 C2809 EU MM1756DURE QE SE e e SCART1_MUTE R2801 us EU Da E OUT SCART MUTE 3 1 gt sc1_SOG_IN oe H EE R2840 CART MUTE SQ vec IN 2K C2816 SCART MUT 2 DTV MNT_VOUT 60405 0 1uF gt SC1_CVBS_IN MMBT3904 NXP PS GND EU OPT D2826 SS c2801 AV DET 9 BSDS ARTSZENERBOHMI sob OUT BIAS ep emm emm emm emm emm emm D emm D emm D emm D emm D emm D D emm D emm D D D emm D emm D2827 P COM GND 0 ESD_SCART_ZENER_ROHM v C2810 SYNC_IN 8 E GU lt A TOF R2816 EU SYNC OUT 9 75
24. Remove the defective copper pattern with a sharp knife Remove at least 1 4 inch of copper to ensure that a hazardous condition will not exist if the jumper wire opens 2 Trace along the copper pattern from both sides of the pattern break and locate the nearest component that is directly con nected to the affected copper pattern 3 Connect insulated 20 gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead of the nearest component on the other side Carefully crimp and solder the connections CAUTION Be sure the insulated jumper wire is dressed so the it does not touch components or sharp edges 5 LGE Internal Use Only SPECIFICATION NOTE Specifications and others are subject to change vvithout notice for improvement 1 Application range 3 Test method This specification is applied to the LED TV used LD31B 1 Performance LGE TV test method follovved LD36B chassis 2 Demanded other specification Safety CE IEC specification EMC CE IEC 2 Requirement for Test Each part is tested as below without special appointment 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
25. gt CK HDMI4 o E 3 d gt CK _HDMI4 M DO U ies I IS n CK 5 d En m e gt DO _HDMI4 S _ S vo 3 8 SE ESD_HDMI_SEMTECH i 4 Mp _ D1 e D829 DO_GND E A O DO _HDMI2 Si CRD RCLAMPOS24PA i Ld ESD HDMI SEMTECH e 1 gt Dice 80074 POT gt D1 _HDMI4 pa 3 8 D827 D2 4 7 e DI CND RCLAMP0524PA A gt D2 _HDMI4 D1 4 gt D1 _HDMI2 SC ESD_HDMI_SEMTECH D2 3 8 5 c D2 _HDMI2 D2_GND 5 6 pos SHT 3 5V_ST gt OPT A D2 4 E TM SC ped d ESD_HDMI_SEMTECH geg e EN i 1 D801 VA801 1 D801 1 R810 par Po ESD_HDMI1_VARISTOR ote 0 a luF luF OKA T 10v T zov ee ESD HDMI1 CAP ESD HDMII1 CAP C801 e N gt do la 0 047uF OPT EC lc i Ain a 25V E e gt MHL_CD_SENSE A M P R831 300K i D826 1 D827 1 P as AD AD D D D D D D D D D D D D D D D ap 1 mi g eegent Sa MHL OCP i 100 HDMI_CEC CEC_REMOTE_S7 i AVDD5V_MHL 5 HDMI 4 ICS902 A BD82020FVJ E Ee 3 3V Normal D800 A A BR230LSFT1G GND e
26. ADJUSTMENT INSTRUCTION 4 Click Connect tab If Can t is displayed check connection between computer jig and set 1 Application Range This specification sheet is applied to all of the LED TV with LD31B LD36B chassis 2 Designation 1 The adjustment is according to the order which is designated and which must be followed according to the plan which can be changed only on agreeing Power adjustment Free Voltage Magnetic Field Condition Nil Input signal Unit Product Specification Standard Reserve after operation Above 5 Minutes Heat Run Temperature at 25 C 5 C Relative humidity 65 10 Input voltage 220 V 60 Hz 6 Adjustment equipments Color Analyzer CA 210 or CA 110 DDC Adjustment Jig Service remote control 7 Push the IN STOP key For memory initialization 2 3 4 5 Na XX Case1 Software version up 1 After downloading S W by USB TV set will reboot automatically 2 Push In stop key 3 Push Power on key 4 Function inspection 5 After function inspection Push In stop key Case2 Function check at the assembly line 1 When TV set is entering on the assembly line Push In stop key at first 2 Push Power on key for turning it on gt If you push Power on key TV set will recover channel information by itself 3 After function inspection Push In stop key 3 Main PCB check process APC After Manual Insert executing APC
27. CO 5 2 o o N ei uff up lu 3 N o o a E x SA N Sa a 9 Qu D 5 5 D Nam N 5 ume dan P oon gt e e a x ON n 2 TG ars O O O O ST o N BTM o o O Oe GEI Es ol o N N US SCAS l CLose to DDR3 CLose to Saturn7M IC Close to Saturn 7M IC Close to DDR3 SS SS SS Ze eg DDR 1600 1G SS ee S7LR M_NON_MS10 K4B1G1646G BCKO ICl01 MSD804KKX EAN61836301 M8 A MVREFCA VREFCA AO CD A MAO Se SYMBOL B B33 Al CD A MA1 A MAO EC A_DDR3_A 0 0 Se B MAO A2 gt A MA2 A MA1 i A_DDR3_A 1 1 SE B MA1 H E 5 A MVREFDQ VREFDQ A3 gt A MA3 A MA2 Fiz PPR3 At2 2 326 B MA2 A4 CD A MA4 A MA3 m A DDR3 A 3 3 um B MA3 R1203 0 A5 gt A MA5 A MA4 rz E 4 SE B MA4 A6 CD A MA6 A MA5 Ep A DDR3 A 5 5 273 B MA5 SN 240 A7 CD A MA7 A MA6 A_DDR3_A 6 6 B MA6 AVDD_DDRO 1 D11 D22 A d A8 CD A MA8 A MA7 E A DDR3 A 7 7 Se B MA7 T e 55 A9 CD A MA9 A MA8 SCH d DDR3_A 8 8 Sa B MA8 D c1205 1Qur A10 AP gt A MA10 A MA9 cie PPR3 A19 9 em B MA9 e 122 o luf p A11 CD A MA11 A MA10 z A DDR3_A 0 B MA10 K inia E z S 208 SS A12 BC O A MA12 A MA11 ais 2 PPR3_A 1 d B MA11 d F ec o i A13 A MA13 A MA12 zii TE B MA12 T lt 1211 0 luF T A MA13 213 2 DDR3_A 3 Se B MA13 lt Set A MA14 A DDR3 A 4 B MA14 e C12 D Lu e C1214 Q luF R2 e CD A MBAO 5 gt A MCK a G 0 1ur 5 A MBA1 Q Zo A MBAO z 2 DDR3 BA DDR3_BA 23 B
28. G I2S IN BCK GPIO148 CD DEMOD SCL D B 0 1uF T0 1uF L14 P2 D8 R214 22 DVB S N G CK _HDMI2 RXBCKP I2S IN SD GPIO149 e DEMOD SDA v7 5 x SS AVDD_AU33 e DD_AU33 G CK _HDM 2f RXBCKN I2S IN WS GPIO147 Kl comp2 DET WS e z G3 DD_EAR33 G DO _HDMI2 j RXBOP Wo a E DO _HDMI2 c RXB0 128 OUT BCK GPIO154 E gt AUD scx AVDD SPA MOD gt ET R19 ie 25 CH VDD D1 _HDM12 DY c 83812 T2S_OUT_MCK GP10152 ee AUD_MASTER_CLK AVDD25_PGA 13mA i nie DP_1 G S L229 2 D1 _HDMI2 CH see REIN 12S OUT SD GPIO155 gt AUD LRCH BLM18PG121SN1D DP_ G 1 G D2 _HDMI2 a5 BXB2P 00 de W18 3 PLL_1 G D2 HDMI2 gt RXB2N 2S IJE W19 e 4 R6 C291 DD LPLL 2 G DDC_SDA_2 DDCDB_DA GPIO29 eT 0 1uF g E 5 U6 gt AUD LRCK G DDC_SCL_2 7 Be DDCDB CK GPIO28 I2S OUT WS GPIO153 mE XM Gc D ed D 16V da 719 6 VDD ND HPD2 K z ROTPLUGB GP1O23 DRENA 7 I ces A G CEC REMOTE S7 CEC GPIO5 a ez DEN E 9 SC1 COMP1_L_IN J17 K7 AA11 C237 x Soe eet e EE 2 2uP EU SC1 COMP1_R_IN C2030 1 AVDD MIU e 5 DD_DDRO_D_1 G P8 p2 Y9 e DD_DDRO_D_2 G HSYNCO 10uF 10V K16 P9 R3 AAS e DD DDRO D 3 G VSYNCO CAP 10uF X7R L15 cn 9 2 AAT e DD DDRO C G RINOP 211 P3 AB8 G z RINOM Sen K17 P13 PP C242 COMP2_L_IN e DD_DDR1_D_1 G SS 1 Y10 m e gt DDR1_D_2 G GINOM EES e COMP2_R_IN MIS DD iq BIS E BINOP 5 d e A DD_DDR1_D_3 G S
29. L 13 Sub B C 14 Ext Input Adjust CASE Cool Mode First adjust the coordinate far away from the target value x y B 1 x y gt target 2 x y lt target 3 x gt target y lt target 4 x lt target y gt target Every 4 case have to fit y value by adjusting B Gain and then fit x value by adjusting R Gain In this case increasing decreasing of B Gain and R Gain can be adjusted LGE Internal Use Only How to adjust 3 Don t wear a 3D Glasses Check the picture like below 1 In case G gain more than 172 Adjust R Gain and B Gain less than 192 2 if the G gain value be adjusted down to 172 G gain increase to 172 and R gain B gain increase O K same as G gain increases 3 if R Gain B Gain is more than 255 the G gain adjust to less than 172 CASE Medium Warm First adjust the coordinate far away from the target 4 3 IR emitter inspection value x y a 1 x y gt target 1 Start 3D pattern inspection 2 If IR emitter signal is correctly received to IR receiver the i Decrease the R G 2 g y lamp of IR tester turns on 2 x y lt target i First decrease the B gain ii Decrease the one of the others 3 x gt target y lt target i First decrease B so make y a little more than the target ii Adjust x value by decreasing the R 4 x lt target y gt target i First decrease B so make x a little more than the target ii Adjust x value by decreasing the G I
30. M D M x PCM_A 13 KES PME Se H PCM 141 R 13 GP GPIO PM 4 GP1010 CD POWER ON OFF 1 AR104 NC 11 1 00 Z AA17 L6 22 R106 z R 14 GP PM_UART_RX GPIO_P GPIO C2 PM RXD 1K NC 12 NC 19 D S Ra a Set PM SPI SCZ1 GPIO P GP E Es e E E S EH PCM REG C REG N GPIO GPIO P GP mc CD FLASH WP NC 13 Nc 18 m E E a ABIS GPIO_P GP ME CD SIDE HP MUTE 43 5V ST R102 NC_14 NC_17 e bd e PCM o amp E C mon OE N GPIO116 GPIO P GP et gt PANEL CTL 3 3K E ae PCM WE C X938 WE N GPIO195 PM SPI SCZ2 GPIO PM GP aa PM_MODEL_OPT_0 NOTS Be PCM_IORD K020 IORD_N GPIO114 GPIO_PM GP DY AMP_MUTE PCM IOWR C 1 IOWR N GP 12 RIID A2 R147 33 PM_SPI_SCK GPIO1 gt SPI SCK AD21 D3 R146 33 PCM CE Kl m CE N GPIO PM SPI CZ0 GPIO PM 12 GPIOO 5 gt SPI CS PCM IRQA IRQA N GP PM SPI SDI GPIO2 SPI SDI Y18 B1 R151 33 PCM CD Som CD N GPIO PM SPI SDOZGPIO3 B gt SPI SDO 5 emm o a a a a emm a a a a a a i emm emm PCM WAIT 05 WAIT_N GP for SERIAL FLASH PCM RST C RESET GP r m CI_TS_CLK Y14 CHEN Doe TSOCLK GP SE lt CI_TS_VAL NAND FLASH 1G HYNIX NAND FLASH 1G THOSIBA NAND FLASH 2G HYNIX HAND FLASH 2G TOSHIBA USBI OCD 2 CE N GP 34 PUVA DYER CI_TS_SYNC EAN35669103 EAN61508001 EAN60708702 EAN60991001 v21 Y12 EE E IC102 1 IC102 2 IC102 3 IC102 4 USBI CTL ESG 2 IRQA N GPIO135 TSOSYNC GP TS H27U1G8F2CTR BC TC58NVGOS3ETAOBBBH H27U2G8F2CTR TC58N
31. M2 AD7 CHANGE TO X5R DD_DDR1_C TJ BINOM E P12 SOGINO e R8 AUDIO IN SCART1_RGB COMP 1 ic E9 E R9 S n v2 4 SC1_ID HSYNC1 I ge R12 v3 ne MHL_CD_SENSE AUDIO OUT EE SCl FB 5 VSYNCI GPIO PM 13 GPIO19 CD_ g EE SC1_R COMP1_Pr EU E A AA M AUOUTL2 gt SCARTI Lout rm mm em rm rm rm rm rm rm rm rm rs 4 e 51 SNP E oe z R254 68 C2124 80 047 02 v4 H W opt 5 3 RIN1M AVDD5V_MHL gt AVDD5V_MHL e cog 97 2 x EU EU R255 33 mc213 o oa7ud TI a DD DDR3 1 5V END 3 SC1_G COMP1_Y e POP Een rz GINIP GPTO_PM 14 GP1020 F VBUS_EN e AS T9 EU 0 047 e es B GINIM AUOUTR2 E SCARTI boat cia SNP NJ EU R257 33 mc215440 047uP R2 U5 TP209 e GND 5 SC1_B COMP1_Pb 5 BIN1P GPIO_PM 15 GPIO21 c19 T11 e EU R258 68 mc216 202109 R1 T e cues D 6 1 gt 2 mC2171000pFr 13 e GND_7 2 SC1 SOG IN 3 Se d SOGIN1 AVDD_DDRO 55mA A D14 a S T13 aa Ee ee Ee Ee 1 5V_DDR D18 T14 ao eon A AVDD MIU e GND 9 4 4 SE A d D19 T15 0 5 S R237 33 C218440 047 ses AQUA PROS SS T46 COMP2_Pr DT RIN2P L202 BLM18PG121SN1D gt prg 27 11 de R238 68 a EEE ESA RE BLM18SG121TN1D e NIN e e zi GND 12 dl E R239 33 c220 40 047uF W2 ADS FE T e GND 13 8 penes Y AV_CVBS_IN gt 1 9 5 Ge E y3 SIN2P c249 Y 0253 0256 cst i C278 o 5 5 5 V e GND_14
32. PD 24V R482 8 2K 1 PD t24V R403 PD_ 24V 1 5K C412 PWR_DET_ON_DIODES IC409 1 APX803D29 1 0 1uF 16v 5 PD_ 24V_PWR_DET_DIODES P ad a GRP D GP GP GB GB GB GB GB GB GB GB GB GB BD EN Re as a a D a D D D emm D D D D D D emm a 3 3V_Normal E N R443 10K B Q400 Y a e MMBT3904 NXP E o 3 5V_ST A FET_2 5V_AOS 3 3V_Normal A03435 SOS 1403 BLM18PG121SN1D U a e e V e 0 C425 C437 D405 E 0 1uF 22uF 5v SR R438 2 2uF 16V TON 22K T5 R445 2 2K FET 2 5V DIODE S DMP2130L Q403 1 POWER_ON OFF_1 Se pr E S LR core 1 15V volt 3 3V_Normal C447 R428 0 33uF 10K 16V 3 5V_ST 1 10V_VDDC A A L413 CIC21J501NE Uy L415 LD Ur se E EE E 3 6uH e SED e THERMAL C430 17 0444 D404 lour C453 C456 O uE 5v 10V 70403 22uF 22uF hou OD TPS54319TRE 10v 10v SS TR I i 05 C488 P i i 3300pF C439 es 50V 2 R432 100pF a 1 16W 330K 5 u Jo gt R436 C448 15K 3300pF 50V 3A Vout 0 827 1 R1 R2 Qe m 4Aa B GB GB GB GB GB AO GB AO GB GD GB GB A AN ams mm A BD A BD A OD A GB A GB GB GB GB GB GB GB GB GB GD BD GB GB GD BD GD a a MODEL se DATE BLOCK Foree SHEET LGE Internal Use Only IR LED and
33. Use Only Contents of LCD TV Standard Repair Process Detail Technical Manual Error symptom A Video error_ No video Normal audio SEH Power Board voltage measuring method EVER ER TUNER input signal strength checking method AB A Video error No video Video lag stop 10 Check Link Cable LVDS reconnection condition A Video error Color error 1 LCD TV connection diagram A Video error Vertical Horizontal bar Check Link Cable LVDS reconnection condition residual image light spot Exchange T Con Board 1 A 1 5 i Exchange T Con Board 2 A25 lt Appendix gt Exchange LED driver Board PSU A 3 5 E Defected Type caused by T Con Inverter Module Exchange Module itself 1 A 4 5 E Exchange Module itself 2 A 5 5 E Continue to the next page Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only AIIN IND IN NIO On ee Contents of LCD TV Standard Repair Process Detail Technical Manual Continued from previous page Check front display LED Check power input Voltage amp ST BY 3 5V Checking method when power is ON POWER BOARD voltage measuring method gie error UI when on off while POYVER OFF MODE checking method Checking method in menu when there is no audio Z DO DO PO 82 Pw 02 Pe 00 OD 8 SA EAN Mat Ne B Power error_No power C Audio error_No audio Normal video Voltage and speaker
34. bd 1 3 3 5V_ST Arie R419 RALL R415 K 100 R426 R461 R406 10K LOK OPT 4 7K e T e R421 S 10K INV CTL R401 C 10K RL ON B 0401 MMBT3904 NXP 0405 MMBT3904 NXP R462 10K E P401 SMAW200 H18S1 S SEN R412 3 9K pr gt PWM_DIM_PULL_DOWN CIC21J501NE DRYON For 55LN54 Power ON oise L408 L404 PIRE T345V sl 4 TO e AX PWM DIM C406 0 1uF CIC21J501NE PDIM 2g SR L09 PRIMI i U 16V SUD PWM2_2CH_POWER L407 a 2CH_ 24V q e ZW e e 0 luF MLB 201209 0120P N2 GND 12V 20V L402 xL 12V 4 e AX e mum T C404 0 18 MLB 201209 0120P N2 16v ge am am am en ap a a a a a a a BD BD BD AD BD GB BD AD BD BD BD GD GD GD BD GD HBD g d as emm a D emm D emm D D D D emm D emm D D D emm D D D D emm D emm D D D D emm D D D D ow 5V Normal VOGUESO GO CI CECR 7 RZ t5V Normal ap GRP D GB GB GB GB GB GB GB GB GB GB A GB GB GB GB GB B EN wie emm emm emm emm emm emm emm emm D emm D emm emm D emm emm D D D D emm D D emm D D D D emm D emm D oD THE o R413 R409 20K C426 2K ir SET LL 0410 3300PF 50V o SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES amp T L406 RI 3 6uH SM USE EE uu CALS 0420 C421 33K 0 047uF eeng 22uF 22uF 13 C422 251 16v 16V
35. checking method when 23 there is no audio C Audio error VVrecked Voltage and speaker checking method in 30 i i A16 audio discontinuation case of audio error EN D Function error_ No response in Remote controller operation checking method A17 remote controller key error Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error E bi sh LCD TV A Video error No video Normal audio 2013 01 09 Content Check Back Light On with naked eye iol M Power On gt disjoint back case gt check lighting at 2 points Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error Established 2013 01 09 LCD TV A Video error_No video Normal audio 2013 01 09 lt ALL MODELS gt Measure DC 93 2 118 5V applying to Module from Power Board Output 93 2 118 5V from Power Board gt supply to Module Check Pin contacting statement and connection statement Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error LCD TV Ean Video error No video Normal audio Ros ALL MODELS EZ ADJUST Tool Option 1 Tool 2 Tool Option3 Tool Option4
36. defeat any plug socket B voltage interlocks with which receivers covered by this service manual might be equipped 6 Do not apply AC power to this instrument and or any of its electrical assemblies unless all solid state device heat sinks are correctly installed 7 Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead Always remove the test receiver ground lead last 8 Use with this receiver only the test fixtures specified in this service manual CAUTION Do not connect the test fixture ground strap to any heat sink in this receiver Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged eas ily by static electricity Such components commonly are called Electrostatically Sensitive ES Devices Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor chip components The following techniques should be used to help reduce the incidence of component dam age caused by static by static electricity 1 Immediately before handling any semiconductor component or semiconductor equipped assembly drain off any electrostatic charge on your body by touching a known earth ground Alter 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 tes
37. file Serial exe MAC Address edit Input Start End MAC address 7 1 2 Download method 1 Communication Prot connection E PCBA USB Port RS 232C cable Personal Computer Y S RS 232C Cable USB to Serial Adapter PC RS 232C Port UC 232A Connection PCBA USB Port USB to Serial Adapter UC 232A RS 232C cable PC RS 232C port Caution LJ21 chassis support only UC 232A driver only use this one 2 MAC Address amp Cl Key Download Set Cl Key path Directory at Start Mac amp CI Download Programme Com 1 2 3 4 and 115200 Baudrate p Down Load Setting Select Scanner ei Ve Port Connection 1 CANCEL Scanner Seting Lemc Mee mno 2 D Port Baudrate PCRAID Eed MAC Address Setting Start MAC Address End MAC Address Function PO Par Pa pa par a al aee save 0901 Change Model F5 sorgen 4 Ee SEN GP4 LOW MAC Address Message Cl Return Message 5 Port connection button click 1 Push the 2 MAC Address write At success Download check the OK 3 Start Cl Key Download Push the 4 Check the OK or NG IN START Name GP3 MSTAR 1 Adjust ial Number SKJY1107 Z ADC bes i S W Version 01 00 00 01 3 Pow MICOM Version 3 00 6 4 Sten T ge Country Group Co SPI Boot Version 3 01 02 System 2 Country Group OT Version 10015 odel Number D L Country FRC Version 0 56 7 Test Option 2 Area Option R LED Version 1
38. signal is not received Request repair to external cable ANT provider In case of External Input signal error Connect and check Check and fix other external device external device n Check and fix external device Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Established 2 D Function error 2013 01 09 symptom Remote control amp Local switch checking Revseddate 0 1 Remote control R C operating error Ge A17 Sica Cate connection Operation S ing Connector solder Check R C Operating When turn off light in room If R C operate Explain the customer cause is interference from light in room Replace R C Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes Check B 3 5V On Main B D 1114 Replace Main B D i A17 Y Check IR Output signal Check 3 5v on Power B D Repair Replace Replace Power B D or IR B D Replace Main B D Power B D dont have problem LGE Internal Use Only Standard Repair Process Established Ers D Function error 2013 01 09 External device recognition error Revised date 12 14 symptom Check technical information Fix information ernal Input a Component gt Replace Main B D information S W Version Check and fix external device cable
39. 09 LCD TV symptom image light spo evin Content LCD TV connection diagram 1 e A7 lt ALL MODELS gt Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error A Video error Color error Pis 2013 01 09 symptom Revised Content Check and replace Link Cable LVDS and contact condition date ALL MODELS Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error Established 2013 01 09 LCD TV Sm A Video error Color error 2013 01 09 Test Pattern Test Pattern Pattern Control 0f Tm White Press 6 to hide No hide OSD Press 0 to hide OSD EL E EZ ADJUST Tool Option 1 Tool ption3 Tool Option4 Tool Option5 Tool Option6 Country Group Area Option ADC Calibration 2 VVhite Balance IV IU F UINL WD 11 Test Pattern Sub B C Ext Input Adjust SPK prese Adjust SPDIF Lipsync Adjust CO OO si TO O Wh Test Pattern Pattern Control Red Press 0 to hide OSD Test Pattern Pattern Control Blue Press 8 to hide OSD Press t hide OSD ad You can view 6 types of patterns using the ADJ Key Checking item 1 Defective pixel 2 Residual image 3 MODULE error ADD BAR SC
40. 1 Secure MIPS without scramble PC DIS 4 GPIO RE p x 4 i AE21 F 88 gt RE 1704 MIPS_WS 4 b1010 Scerur MIPS with SCRAMBLE SCH DTI i Hetty t3 3V Norma PF_OE m NC 25 A PEM DI7 Yt 6 GPIO NF CE12 GPIO E PF CEO e PCM A 0 14 7 GPIO NF WPZ GPIO DU PF WP NC 7 NC 24 CAP gt NF_CEZ GPIO PF_CEO c102 1 e e e PCM A O W20 REBEL AC18 PF E NC 8 NC 23 SE x M x x x PCM A S55 R 0 GPIO NF CLE GPIO ACIS gt PF_C 1 3 3V Normal 1 CIT V PCM AT2 R 1 GPIO NF REZ GPIO CO PF OE 0 1uF VCC 1 vee 2 10UF 10V X5R 10uF 10V W22 AD17 E E E E S r d T e 1I XB QUE SR E 2 PEM ALS SR R 2 GPIO NF_WEZ GPIO EE PF_WE R105 VSS 1 VSS 2 ps TA gi i ed si POMZA TA X55 R 3 GPIO NF ALE GPIO XU gt PF ALE IK e Ti e SS S 0 PCM ATS R 4 GPIO NF RBZ GPIO F RB NC 9 NC 22 e Ei aa AA21 PCM ATG R 5 GPIO 9 lt 1 LED R BUZZ Y19 NC 10 NC 21 PCM A 7 XH R 6 GPIO e AUD SCK PCM AT R 7 GPIO CLE NC_20 AUD_MASTER_CLK R148 3 Y16 Ere H lt a e AUD MASTER CLK O SE ABIT 914 014 6 R GPIO GPIO_PM GPIO POWER DET PF cri C gt ALE 1 03 S 56 PCM_A 10 AB20 PM 0 K6 e PWM1 PCM ALI R 10 GP PM UART TX GPIO PM 1 GPIO7 gt PM TXD PF ALE WE 1 02 C112 AA16 K5 R 1 GP GPIO PM 2 GPIO8 INV_CTL PE_WE E e PWMO PCM A 12 AA19 ud m J6 5 R GP GPIO PM GPIO RL ON PF WP gt e WP 1 0 M
41. 25V 25V KON LNB NB LNB A GND close to Boost pin tl E 0 1uF close to VIN pin 15 C2709 0 1uF N 50V a LNB 2e D2702 R 0 close to TUNER E UO LNB_OUT 30V a LNB 13 am ap am ep am am LNB C2712 ENE Sanae IC2701 R2703 0 1uF TDI E 36K 4A8303SESTR T2 a R ue R2702 eene LNB 50V 40V e pF pF p s amp uF yn n LNB LNB LNB E 01 SH GER H i e T 13 D2704 1 N LNB jJ 7 ee i 0 1uF p a a e 40V oj af al d B el o al a e H 02 09 gt gt O Close to Tuner A_GND E Surge protectioin O L4 Q V A_GND eo 0 m mM LNB Be VEE 5 LNB R2 Caution need isolated GND R2701 0 LNB TX A GND DEMOD_SDA St O 02 a O Fi Q Max 1 3A gt 12V 12V_LNB LNB BLM18PG1215SN1D PI THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE scuemetic LG Electronics Copyright 2013 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes MODEL 101 971 DATE LG ELECTRONICS BLOCK s SHEET 7
42. 2D EUROBIRD 3 EUTELSAT W7 HELLASSAT 2 EXPRESS AM1 TURK SAT 2A 3A INTERSAT10 Copyright 2013 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Specification Analogue TV 1 PAL BG 2 Broadcasting system 1 DVB TICIT2 Satellite Digital TV 1 DVB TICISIS2 Analog Upper Heterodyne 3 Receiving system Digital COFDM QAM A 5 Scart Jack 1EA PAL SECAM Component Input 1EA N HDMI Input 2EA Audio Input 1EA SDPIF out 1EA e 1 12 13 Ethernet 1EA Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes Video Input RCA 1EA PAL SECAM NTSC Y Cb Cr Y Pb Pr HDMI1 2 DTV Component amp AV SPDIF out Earphone out 1EA GE EE SEN LA58 Only USB 1EA EME DivX HD For SVC download DVB T DVB DVB C DVB S DLNA Wired DMP only Analogue TV RF VHF E2 to E12 UHF E21 to E69 CATV S1 to S20 HYPER S21 to S47 Digital TV VHF UHF Satellite TV VHF UHF C Band Ku Band DVB T2 T2 model only support DVB S S2 Satellite model only support gt 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 Rat
43. 3 B MDOSL lt _ gt B MA14 G B MDQSLB lt Cy B MDQSU lt B B MDQSUB lt E7 B MDML lt E D B MDMU lt E3 B MDQLO lt B MDQL1 lt _ e B MDQL2 lt B MDQL3 lt 3 H B MDOL4 lt H B MDQLS lt S G B MDQL6 lt H B MDQL7 lt D7 B MDQUO lt 5 B MDQU1 lt _ B MDQU2 lt 5 E B MDQU3 lt 3 A B MDQU4 lt _ B MDQUS lt S B B MDQU6 lt 3 A B MDQU7 lt 0 R_1600_2G_HYNIX DDR_1600_2G_NANYA DDR_1600_2G_NANYA ICI202 x4 GA 201 5 ELS OR KD L O2G63DFR PBC NT5CB128M16FP DI NT5CB128M16FP DI LUCK HEET LGE Internal Use Only Serial Flash for SPI boot OS THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF 15 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes THE CRITICAL COMPONENTS IN THE NN SYMBOL MARK OF THE SCHEMETIC SECRET LGElectronics 3 5V_ST A OPT R1300 10K 3 5V_ST 3 5V_ST A A SPI FLASH MACRONIX OPT IC1300 BER MX25L8006EM2I 12G CS C1300 0 1uF SPI_CS e L SO SIO1 SPI_SDO gt SCLK FLASH_WP e LI R1302 SI SIOO0 33 SPI SCK SPI FLASH WINBOND ICQOdq 500 1 W25080BVSSIG DI IOO0 L
44. 3 3 Cow ADC 3 Tool Option EDID Version RGB 0 02 read Spectrum Tool Option1 EDID Version HDMI 0 02 E Level Tool Option2 Chip Type SATURN 7R i Stable Count Tool Option3 Ni Fi Version 1 0 12 ODC Test Tool Option4 Adjust Check 1 Country soup Press OK to Save 04 Wi Fi Channel du Tool Option5 Wi Fi MAC 00 00 00 00 00 00 4 Adj Ge VVhite Balance IAC Address E8 5B 5B 24 64 70 5 Adust A ADC ebug Status RELEASE 480i Deg a lx Component API History Ver 1320 IL DB CMI_EF_LGT10 voooox Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes 15 7 2 LAN Inspection 7 2 1 Equipment 8 Condition Each other connection to LAN Port of IP Hub and Jig d 7 2 2 LAN inspection solution LAN Port connection with PCB Network setting at MENU Mode of TV Setting automatic IP Setting state confirmation gt If automatic setting is finished you confirm IP and MAC Address PCBA JIG Ready Setting automatic IP IP 192 168 123 254 7 3 LAN PORT INSPECTION PING TEST Connect SET gt LAN port PC gt LAN Port SET 1 PC 7 3 1 Equipment setting 1 Play the LAN Port Test PROGRAM 2 Input IP set up for an inspection to Test Program IP Number 12 12 2 2 7 3 2 LAN PORT inspection PING TEST 1 Play the LAN Port Test Program 2 Connect each other LAN Port Jack 3 Play Test F9 button and confirm OK Message 4 Remove LAN cable
45. 5079 2711275 8 80 119 270 274 28 9 Over 120 269 273 28 Aging chamber egen Morgana x y Dy 4 02 are 202 202 302 3 3 35 24 280 200 300 L3 Um are pae e L4 109 are me zu 5 235 Lanz 6 3649 270 272 gt 579 266 260 282 26 8 00719 264 267 2e 9 Over 120 263 206 279 286 Connecting picture of the measuring instrument On Automatic control Inside PATTERN is used when W B is controlled Connect to auto controller or push Adjustment R C POWER ON Enter the mode of White Balance the pattern will come out Target X 0 271 Y 0 276 X 0 287 Y 0 296 X 0 315 Y 0 332 Mediu 5 5 a NetCase4 C2 Xx 5 CA En co 60 CA N C2 E NO rN N O Go OP OO Go OO OO 3 a E C2 P C2 N N C2 g N N D N co A C2 A A C2 N A co CA O O C2 co CA O C2 ev O 38 NN C2 O A oO N Full White Pattern CA 210 COLOR ANALYZER TYPE CA 210 RS 232C Communication Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes 12 Auto control interface and directions 1 Adjust in the place where the influx of light like floodlight around is blocked illumination is less than 10 lux 2 Adhere closely the Color analyzer CA210 to the module less than 10 cm dista
46. 7 7 AUDIO AMP STASSOBWEF 13402 10uH 3 3V_Normal SED gt SPK_L A C3420 C3424 0 22uF 10002 C3418 50V 50V 0 22uF o e EAKER L c 50v 1 o AGO 3 SER NC 13 i 13403 03421 03425 e enn Ge 10uH m on EUM u a 16v T NG 5 GER e SPK_L e y VDDDIG1 GNDDIG1 FFX3A IC3401 FFX3B STA380BWF L3404 C3404 le EAPD FFX4A 10uH 2 2uF e E SED e EI gt SPK_R nos TWARNEXT FFX4B ver SS VREGFILT Zur eTlODODE AGNDPLL ie C3419 50V 50V gt 22 ur e e L EAKER R MCLK 50V L 13405 C3423 3427 Mews SAVE e PE E 50V 50V HYN e e SPK R 13 5V ST AUD MASTER CLK Ti 13401 24V AUD_SCK mie l E CIS21J121 AUD LRCK GEB Tn E o e AUD LRCH o cal 43407 C3411 03412 2505245 LS 6 SA R3403 0 2 LATE ALTE luF luF 0 1uF gol OUF 10K 16V 50V 50V 50V 50V 35V o o o 3216 R3404 100 AMP RESET T e e R3401 R3406 0 AMP_MUTE SE B 03401 io AMP_SDA MMBT3904 NXP 1000pF R3407 0 p AMP_SCL P3401 WAFER ANGLE
47. 8809 30V E e 5V HDMI 2 5 Normal 57 HDMI 4 t5V Normal 3 59 ST SE 100K IN 1 uF OPT A A A QE Fe e M TE e N vd N u Kp amp a a 2 da MMBD6100 MMBD6100 MMBD6100 y y D822 y y D824 y v a D825 Gi O O T T e 3 3V Normal Se Sa T R827 BN is R806 20K VBUS_EN R822 R823 10K x R824 lt R825 MHL OCP DET UT Rees Tow TRET OTK S TKI d ce lt DDC_SDA_2 DDC_SDA_4 R816 10K DDC_SCL_2 DDC_SCL_4 MHL OCP EN Active High em em em em em em em wem em em em em emm em em Gm em am emm d Lao e e em emm em em em em em em em em em em em em em em em em em em em em em em em em em af THE N SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE scHEMETIC LGElectronics MODEL sea 57558 DATE LG ELECTRONICS BLOCK Tonn SHEET e 7 Copyright 2013 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes DOE LLLE SPDIF OPTIC JACK 5 15 Mstar Circuit Application A 3 3V_Normal SPDIF JACK FOXCONN JK1001 2F01TC1 CLM97 4F SPDIF JACK SOLTEAM JK1001 1 JST1223 001 Y nj He o 0 5 o IO e pe Q
48. AJ B North Latin America http aic lgservice com Y Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Life s Good LED IV CHASSIS LD31B LD36B MODEL 47LN54 47LN54 z CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL P NO MFL67729501 1301 REVOO Printed in Korea CONTENTS CONTENTO Gen e e E NR ka Rea 2 SAFETY PRECAUTIONS eegen 3 SERVICING PREGAUTIONS ooo ers riores 4 SPECIFICATION as 6 ADJUSTMENT INSTRUCTION j d oux RuRE n ER ECE Rn KUFuE RUN ns bass 10 BLOCK DIAGRAM sas und ndo Sh 16 EXPEODED VIEW crisi 19 SCHEMATIC CIRCUIT DIAGRAM neee nnn Copyright 2013 LG Electronics Inc All rights reserved SE LGE Internal Use Only Only for training and service purposes SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by A in the Schematic Diagram and 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 manufactu General Guidance An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line Use a transformer of adequate power rating as this pro
49. AN BA 4 Video error Classification of MODULE or Main B D Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Appendix Exchange T Con Board 1 Solder defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Abnormal Power Section Solder defect Short Crack Abnormal Power Section Solder defect Short Crack Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Appendix Exchange T Con Board 2 Abnormal Povver Section Abnormal Povver Section Solder defect Shorti Crack Solder defect Short Crack SE EAN lt A Ke Abnormal Display GRADATION Noise GRADATION Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Appendix Exchange PSU LED driver EM 4 No Light Dim Light Dim Light Dim Light No picture Sound Ok Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Appendix Exchange the Module 1 Panel Mura Light leakage Panel Mura Light leakage Press damage Crosstalk Press damage Crosstalk In this case please exchange the module Press damage Copyright O 2013 LG Electronics Inc All rights reserved Only for tra
50. Boot file Download 1 Execute ISP program Mstar ISP Utility and then click Config tab 2 Set as below and then click Auto Detect and check OK message If Error is displayed check connection between computer jig and set 3 Click Read tab and then load download file XXXX bin by clicking Read MStar ISP Utility v4 1 8 IS pu weg i Device Load Auto B P V Restore HOCH on Checksurn Uruzed Hyliix Hex ti qx E tatus Start Addr n nnnnnn End Addr UckkERE Batch File e Da C Dstt Elapsed Time S USB 450KHz Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes A EE a ren Dis Con r I2C Pin Definition MStar ISP Utility Y4 1 0 S lt gt B P V Restore HDCP E2PROM Device Setting i Use USB Ki j Cc Communication Setting Speed 74 mi gt S SDA in SCL in SDAout C SCL out us Part Type USB AA int Base Addr o AA PIN pino zi Auto Detect SPI Setting Reverse High T USE SPI 9 pin 1 switch UART I2c Loi GI j d JIG si Apply Pull all Pin High t 1 USB 450KHz Elapsed Time Jac Flash Status 00 Please Check the Speed To use speed between from 200KHz to 400KHz 5 Click Auto tab and set as below
51. Control 3 5V_ST A CONTROL_NO_FILTER R602 R603 R611 10K 0 1 1 CONTROL_FILTER L601 R600 BLM18PG121SN1D 100 KEY1 lt e VON CONTROL FILTER CONTROL FILTER C608 L602 0 1uF R601 100 P600 BLM18PG121SN1D 16v 12507WR 08L KEY2 lt e TON CONTROL FILTER C609 CONTROL NO FILTER R612 0 1uF 0 16V 3 5V_ST 8 L600 BLM18PG121SN1D T 9 R610 1 8K C602 C603 3 5V_ST Ge Get ER Zeg LED R BUZZ 16V 50V OPT C607 0 1uF 9 R607 16V 34 SHK IR CC 8 ef 100pF 50V IHE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION a a SECRET LG ELECTRONICS MODEL DATE THE CRITICAL COMPONENTS IN THE NN SYMBOL MARK OF THE SCHEMETIC GElectronics BLOCK enee GHEET 4 1 Copyright 2013 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes USB SIDE 5V_USB LG e SIDE USB1 DM e SIDE USB1 DP A D700 RCLAMP0502BA OPT 3AU04S 305 ZC THE N SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET Tu Cru Pape LG ELECTRONICS BLOCK vss GHEET DATE Copyright O 2013 LG Electronics I
52. DOL 5 SS B MDOL5 zi gt A MDQL7 A MDOL6 p15 A PPR3 DOLI6 DR3 DOL 6 E B MDOL6 B9 A MDQL7 A_DDR3_DQL 7 DR3_DOL 7 B MDQL7 gt A MDQUO DI G16 G21 D CD A MDQU1 A MDQUO pum A DDR3 DQU O DR3 DQU O m B MDQUO d CD A MDQU2 A MDQU1 SE A_DDR3_DQU 1 DR3_DQU 1 SCH B MDQU1 Se CD A MDQU3 A MDQU2 Se A DDR3 DQUI2 DR3_DQU 2 Se B MDQU2 F gt A MDQU4 A MDQU3 Erg A PPR3 DQUL3 DR3_DQU 3 EE B MDQU3 m CD A MDQU5 A MDQU4 EEn A_DDR3_DQU 4 DR3_DQU 4 2 B MDQUA Se gt A MDQU6 A MDQU5 Dig A DDR3_DQU 5 DR3_DQU 5 E B MDQUS5 gt A MDQU7 A MDQU6 520 A_DDR3_DQU 6 DR3_DQU 6 2d B MDQU6 A MDQU7 A_DDR3_DQU 7 DR3_DQU 7 B MDQU7 0 DDR_1600_1G_HYNIX DDR_1600_1G_HYNIX ECIZOL T I CIZO2 H5TOI1G63EFR PBC EAN61829003 N3 VREFCA E N SYMBOL MARK OF THIS SCH HETOIGOSEFHR FBCG EAN61829003 VREFCA DDR 1600 1G NANYA DDR 1600 1G NANYA DO T2042 LTCIZOZ2Z 2 NT5CB64M16DP DH EAN61859501 Mg VREFCA VREFCA HL N9 EMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes WHEN SERVICING IF IS NT5CB64M16DP DH KAB2G16461 EAN61859501 DDR 1600 2G SS MCA AO LS DI EAN61848802 VREFCA SECRET LG Electronics DDR 1600 2G SS BCKO K4B2 N3 CIL 0253 G1646E BCKO EAN61848802 uj VREFCA DD 457 N2
53. F E e e 50 Cie 02601 le BR E MMBT 3906 NXP IF AGC NC_1 NC_2 TAC TE SAGE SA ra dr m EA E T2 C S2 CHINA C T ki a n H_NIM NON_T2 AN SE GEM DLIF P NG NC_3 T C_DIF P See SS bum R2636 2 OPT e e e i C2600 0 should be guarded by ground 2K es 0 1uF NON T2 C S2 CHINA QET DLIFINI NC 3 NC 4 TC DIF N J 16V R2602 E E 10 A u pj gt IF_P_MSTAR A B3 3 3V NC_5 NC 4 A e e e gt IF N MSTAR BA 1 23V NC 6 NC 5 NN oen A REINA dike 3 3V TU CHINA e e 10 R2606 A 0 DEMOD_RESET NC_7 NC_6 TS a Ae C2614 C2617 C2618 100pF iv T sv 1 23V TU SHIELD GND CND 1 GND_1 D zt CHINA A ES e e zi BLM18PG121SN1D NC_4 ERROR ERROR ZEN CHINA CHINA H e e C2616 C2620 hd SYNC SYNC SYNC D LUE GE e 16V 16v 2 poo po H VALID VA D VA D ARP601 47 E gt FE_TS_ERR RE IS MCLK MCLK MCLK gt FE_TS_SYNC e e FE TS VAL DO DO DO FE TS CLK e e CHINA D1 D1 D1 A Close to the tuner D2 D2 D2 NS OD FE TS DATA 0 7 ep ex emm emm emm D emm emm D D emm emm emm emm emm emm emm emm emm emm emm emm emm emm emm e e FE_TS_DATA O This was being applied to the only china demod B1 3 D3 D3 D3 FE TS DATA 1 R ERS so this has to be deleted in both main and ISDB sheet e e FE TS DATA 2 1 16W t3 3V TU DA DA DA FE TS DATA 3 BR RESET DEMOD EE 1 8V_TU IF_AGC_SEL e e CHINA ee AP1117E18G 13 5 un AGC_ B2 1 D5 D5 D5 R1 MATES e AR2603 47 SE ENA CTRL 1 C D6 D6 D6 FE TS DATA 4 0
54. FE TS DATA O E CI SLOT JACK O CI MDI 0 C CI_CD1 lt P1901 p 10067972 000LF FE TS DATA 0 7 R1928 33 R1309 1 CI_MISTRT ETT SC FE TS SYNC 2 CI_DATA 3 GR ARR Cl FE_TS_VAL_ERR R1930 100 E AR1901 5 CI_DATA 4 FE TE CIK CI MCLKI 22 S CI DATA S me K CI_TS_DATA 4 lt E CI_DATA 6 CI_TS_DATA 5 lt CI DATA 7 CI_TS_DATA 6 lt 6 7 R1919 47 CI TS DATAITIK CA XDDRHO PCM CE Eun AA RIS e 9 5 CIZADDR 11 CI_OE d CI IORD CI ABDR 9 5V Normal CI IOWR i CI ADDRIS CI ADDR 13 OK CI_MDI O SS 4 CI_ADDR 14 L J gum B P A B DB HB HB B P P P HB B A GB HB HB GB GB HB GB P P GB B DB HB HB GB GB GB GB GB A CI MD 1 5 ERE CI_MDI 2 CI_WE 81920 100 CI HOST I E CI_MDI 3 e LD PCM IRQA 7 I o ay i i d C1905 8 C1909 51901 EE E 9 ee Qe TUE 3 3 7 Normal GND A 5V_Normal See s CI_ADDR 12 L J E Cd re ers CI MDI 21 v CLOSE TO MSTAH wap vn CO R1909 22 GND CI_MDI 7 GE DET 10K R1906 10K 53 CI ADDRI6 1C1902 L J R190 47 d 24 E C1913 PCM_RST CI_ADDR 4 0 1uF R190 47 25 iu q PCM_WAIT lt e NN i CLOSE TO MSTAR NE E CI ADDR 3 Le R1925 100 27 CI ADDRI2 TOSHIBA CI_TS_CLK lt CI ADDRI1 R192 33 CI TS VAL 28 EEN T R1927 33 PCM_A O 29 CI_TS_SYNC CJ Se Ci DATATOJ d ees 01TO742440D AR1914 AR1903 33 Se CI_DATA 1 2Y4 1y1 33 cT wEODNGEI ERES CI DATA ZI C
55. G ELECTRONICS gt SPI_SDI MODEL Te DATE BLOCK reren 05 SHEET LGE Internal Use Only Headphone Option HEAD PHONE HEAD_PHONE HP_LOUT Il OPT ue ESCH HEAD_PHONE amp E u R1501 01502 B 01504 16V 1000pF 1K MMBT3904 NXP e MMBT3904 NXP HEAD PHONE 43 5V ST 50V B EAD_PHONE_POP PS HEAD_PHONE_POP a JK1500 A E C 3 3V Normal KJA PH 0 0177 D GND 5 e e II e HP DET HEAD PHONE 150 HEAD PHONE POP e HEAD_PHONE HP_ROUT Il OPT SE Ge HEAD_PHONE G E u R1502 01503 B 91505 16v 1000pF 1K MMBT 3904 NXP e MMBT3904 NXP 50V HEAD PHONE POP B HEAD PHONE POP E E EAD_PHONE_POP 01501 R1504 MMBT3906 NXP 10K HEAD PHONE R1505 R1503 1K 1K SIDE_HP_MUTE HEAD_PHONE_POP RI THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE NN SYMBOL MARK OF THE SCHEMETIC GElectronics Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LG ELECTRONICS MODEL DATE BLOCK 509 SHEET LGE Internal Use Only CI Region Option name of this page Ci SLOT ET SLOT because of Hong Kong 1 i I I i I I i I
56. I_ADDR 0 14 CI_ADDR 7 lt _ gt CI_ADDR 0 Buc Ee DATE EA D CI ADDR 6 CX gt CI_ADDR 1 33 CI ADDRISIK 1A2 2A4 gt CI_ADDR 2 CI_TS_DATA 2 lt _ 34 PCM A 1 E gt PCM A 7 CI TS DATA 3 C e e CI ADDR 4 amp K CD ci ADDR 3 1Y2 R1907 Ei 100 al CI_CD2 CJ ne E 2A3 5V Normal GND 9 PCM_A 2 d PCM A 6 sr oO GND E 1Y3 c1914 2PF 50V i BU LN K 202 CLOSE TO MSTAR PCM_A 3 PCM_A 5 1Y4 CI_MISTRT 2A1 IPCM A 4 CE DETECT pe ap A aum amp A ap Am D A AA A BD GB AB GB A A AD GB GB GB GD a A a 9 i 3 3V Normal 3 3V Normal AECH CI_DATA O ESL AS PCM DIO CI_DATA 1 PCM DII CI_CD2 z CI DATA 2 PCM DI2 CI_CD1 I R1917 o CI_DATA 3 PCM_D 3 10K lt E F a Jk ci paTATA ARTIQ 532 PCM_D 4 de 5 Z CI_DATA 5 PCM_D 5 a e R1911 gt CI DET zs CI DATA 6 PCM D 6 47 o gt PCM_CD CI DATA 7 PCM DI7 Pu A GB GB GB GB BD GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB BD ai PCM_D 0 7 CI_DATA 0 7 ap GB GB GB GB GD GB GB GB GB GB A GB GB BD GB GB GB GB GB Ge BD ai CI POWER ENABLE CONTROL
57. K OPTION INPUT MY MEDIA m Press OK to set programme setting Na Software Update Picture Test C Sound Test Signal Test Product Service Info j P 1 ua erval 1 8 ion HOM ode W 801 YLE TV2 802 YLE FST 803 YLE24 I 804 YLE Teema 800 YLE PEILI Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error Established symptom A Video error Video error video lagjstop 2013 01 09 LCD TV Version checking method Ge WE 1 Checking method for remote controller for adjustment rr y Check Adjust Check MICOM Version E Kee Off Status Press OK to Save BOOT Version 2 00 Version EDID Version HDMi 0 0 Chip Ty MI MAC Address A Demod F W Ver D Demod FAN Ver Access USB Status Debua Status ggageevensun RB q APP Histo Ver 4521 POL DS LGD RF x2178 100x47 RR e H OK 0x42 0x25 OK v r Ox 15 Press the IN START with the remote controller for adjustment kemi ic GZ alPiz Ve 4 Bn rl 4 ey 3 L NJ det 1398 0000 10803080 y d 11003 gt Ha Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error A Video error e lila bar residual Gielen 2013 01
58. M INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF 15 SECRET ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC GElectronics LG ELELTRONILS SL LILK GHEET Copyright O 2013 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes MODEL 69709 TORTE LVDS EU L9 LEIBS ADS Connector FOR FHD REVERSE 10b1t For FHD 60Hz 30Pin LVDS Connector For HD 60Hz_Normal Change in S7LR EHD P1100 FI RES1S HF J R1500 HD P1101 FF10001 30 Pol change RXA4 RXA4 RXA4 LA Wu RXB2 RXA4 RXA4 RXA4 RXB2 RXA3 RXAO RXAO LA SJ RXA3 RXAO RXAO RXB1 RXACK RXA1 RXA1 RXACK RXA1 gt RXA1 RXA2 RXA2 RXA2 LA VO RXB1 RXBO MS EI RXBO RXA2 RXA2 RXA2 Di N RXA1 RXACK RXACK Di w PANEL_VCC A RXA1 RXACK RXACK Bs Bs RXAO RXA3 RXA3 Bs an FHD L1100 120 CIS21J121 RXAO RXA3 RXA3 Ds NS RXB4 R
59. MBAO B F F 6 01216 Our r O A MBA2 in e A MBA1 zis A DDR3_BA DDR3 BA zo B MBA1 t I 4 A MBA2 A DDR3 BA DDR3 BA B MBA2 ne s0 01uF ci Sot 50V C G25 a Du A MCK gt A_DDR3_MCLK _DDR3_MCLK E B MCK gt A MCHE A MCKB A_DDR3_MCLKZ DDR3_MCLKZ B MCKB D2 6 F25 Se DX A MCKB A MCKE A DDR3 MCLKE DDR3 MCLKE B MCKE F1 A MODT H2 E14 D20 LD A MRASB AVDD_DDRO A MODT Bip 2 DDR3_oDT B_DDR3_ODT ees B MODT CD A MCASB R1231 A MRASB A12 2 DDR3_RASZ B_DDR3_RASZ B MRASB ji CD A MWEB 10K A MCASB TE A DDR3 CASZ B DDR3 CASZ rov B MCASB ES i A MWEB A DDR3 WEZ B DDR3 WEZ B MWEB CD A MRESETB LI F11 E20 SR A MRESETB A_DDR3_RESET B_DDR3_RESET B MRESETB TI A MA14 C DX A MDOSL A m K gt A MDOSLB A MDOSL cig A PDR3_DOSL B_DDR3_DOSL E B MDQSL im A MDOSLB A DDR3 DOSLB B DDR3 DOSLB B MDQSLB gt A MDQSU B3 B J21 SS 5 A MDOSUB A MDQSU X A DDR3 DOSU B_DDR3_DOSU 338 B MDOSU E A MDQSUB A_DDR3_DQSUB B_DDR3_DQSUB B MDQSUB gt A MDML J2 E15 H24 ES 5 A MDMU A MDML ADL 2 DDR3_D0 DR3 DOML ES B MDML inf A MDMU A DDR3 DQ DR3_DQMU B MDMU gt A MDQLO M9 D17 L23 zr gt A MDOL1 A MDOLO cis 2 PDR3_DOL O DR3_DQL 0 0 B MDQLO gt A MDQL2 A MDQL1 B21 A PPR3 DOLLA DR3_DOL 1 m B MDOL1 Ee gt A MDOL3 A MDQL2 E A_DDR3_DOL 2 DR3_DOL 2 TE B MDOL2 To gt A MDOLA A MDQL3 B22 A PPR3 DOLI3 DR3_DQL 3 zT B MDQL3 CD A MDOL5 A MDQL4 ria A PPR3_DOLT4 DR3_DOL 4 SC B MDQL4 CD A MDQL6 A MDOL5 222 2 PDR3_DOLI5 DR3_
60. Main B D error2 Replace module contact SE N condition N N Gheck error color Ena input mode Ge A1 External Input ean Check Test pattern Component device and cable arnal devi Cable Y Replace Main B D RGB HDMI DVI error Check external i Y device and gt Replace Main B D cable Copyright 2013 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process i Established Error A Video error 2013 01 09 symptom Vertical Horizontal bar residual image Revised date light spot external device color error Revised date 6 14 Vertical Horizontal bar residual image light spot Module Gr AT gt A8 A9 Check color condition by input Check external External Input device Y ode ie replace Link Component connection Cable HDMI condition Y Replace Request repair module for external device Check Test pattern External device screen error Color error Check screen N condition by input Connect other external Check S W Version gt External Input device and cable Component Check normal operation of Replace HDMI DVI External Input Component Main B D H and HDMI by connecting Jig pattern Generator Set top Y S W Upgrade Box etc Request repair for Connect other external external device device and cable Y Check normal operation of
61. O GP IV AVDD_NODIE 1 2 URSA_SDA Ge SWICH A A A MIUVDDC RESET IC SOC RESET R205 Es 2 URSA_SCL Ic_Soc_ L206 A A 2 100 BLM18PG121SN1D LCOS L228 12 lt is C202 c200 e EEn e a BLM18PG121SN1D N4 4 7uF SS 4 7uF 22 R217 AVDD DMPLL dr n ARR IRIN GPIO4 20 a 00000 lt IR 10v CT 10v 0 C286 0252 ESD_lu AB L C gt HDMI ARC eee e e e 5 Esp o To 109m O 1uF SU C296 279 N5 HDMI1 ARC HDMII ARC t3 5V SOC RESET SOC RESET L207 ESD 0 1 Fol 10uF am luF HWRESET SOC RESET BLM18PG121SN1D Slur Lov SS 7 R200 C201 ESD luF 62K 0 1UF C205 C286 16v 0 1uF p BE ESD 0 1uF 8D 0 1u ov z ESD_1uF zi IHE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION y SECRET LG ELECTRONICO DEL ATE THE CRITICAL COMPONENTS IN THE NN SYMBOL MARK OF THE SCHEMETIC Electronics I ULK Copyright 2013 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes 1141 3 POWER BLOCK am em cmm o cm A B A A GB GB GD GB GB A GB A A GD GB GD GD GB A GD GB GD GB GD BD A a e A FROM LIPS amp POWER B D 3 5V_ST MMBT3906 NXP A 0402 3 3V_Normal A 3 5V_ST e
62. OWEROFF SWDOWN POWEROFF UNKNOWN POWEROFF ABNORMAL1 POWEROFF CPUABNORMAL Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes Replace Power B D Established B Power error Ll 01 09 Revised date 8 14 Y Replace Main B D N Replace Power B D Replace Main B D Explanation ower off by REMOTE CONTROL wer off by OFF TIMER ower off by SLEEP TIMER Power off by INSTOP KEY Power off by AUTO OFF P Po Po LGE Internal Use Only Standard Repair Process Established symptom No audio Normal video A16 Check audio B 24V i A15 Check user No audio Screen normal d ci Speaker off orma Y voltage N Y Cancel OFF Replace Power Board and repair parts of Power Board H Replace MAIN Board Z Check Speaker Disconnectio disconnection Y Replace Speaker LGE Internal Use Onl Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes Standard Repair Process i Established m C Audio error 013 01 09 t PNP VVrecked audio discontinuation noise Revised date NW abnormal audio discontinuation noise is same after Check input signal compared to No audio A16 Check and replace speaker and Check audio Eeer B Voltage 24V Check input SE ee Y External Input MS signal N Discontinuation Noise only When RF
63. Option 8 ADC Calibration 9 White Balance 10 10 Point WB 11 Test Pattern 13 Sub B C 14 Ext Input Adjust Caution Never connect HDMI 84 D sub cable when EDID downloaded Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes 11 3 3 EDID data 1 FHD HDMI EDID data 2D uod 1 2 3 4 5 A Ld d a CHE I RR m 20 1 03 80 A0 5A 78 OA EE 91 A3 54 4C 99 26 A1 08 00 31 40 45 40 61 40 71 40 81 80 01 01 01 02 3A 80 18 71 38 2D 40 58 2C 5A 00 00 O0 1E 66 21 50 BO 51 OO 1B 30 00 ao 5A 00 00 00 1E 00 OO 00 FD 00 3A 10 00 0A 20 20 20 20 20 20 d X 01 e 26 15 07 50 09 57 07 Hb so t zi 16 re 2o 58 26 25 0 26 oo 9E 01 1D 00 72 51 DO 1E 20 GE 28 55 00 20 C2 31 00 00 1E 02 3A 80 18 71 38 20 40 58 2c AO 5A 00 00 00 1 01 1D 00 BC 52 DO 1E 20 168 28 55 40 C4 8E 21 00 00 TE 00 00 00 OO 00 00 FO 00 00 00 00 oo 00 00 oo 00 00 oo oo oo oo 00 e C E F 1 e O o n ajojxpjoln ociojoj lk _ N 00 60 80 90 BO Di Fo 2 Detail EDID Options are below a Product ID HEX EDID Table DDC Function MODEL NAME HD FHD Model 0001 01 00 Analog Digita
64. PD GD BD D GD BD 0D 0D n GD D a A GB GB GB GB GB GB GB GB GB GB GB GB GB GB lt GB lt GB GB lt GB lt GB GB GB GB GB GB A i debel DR p E S ec 3 5V_ST A IC407 AP7173 SPG 13 HF DIODES e ci L420 EP BLM18PG121SN1D IN OUT l 8 9 e 4 2 re E ze i m VCC 4 ss Msc gt 3 3V_Normal 1 e 5A 0 lurF 2 R433 zN ie T isv OPT 10K 4 5 C461 e e e DT Vout 0 8 1 R1 R2 1 5319 Am GB GB GB GB GB GB GB GB lt lt lt GB lt lt lt GB GB lt lt lt lt lt GB GB GB B dex MONO E maL IC402 t2 5V Normal t3 3V Normal A TJ11185 2 5 A 3 2f OUT e H I C440 D402 C403 CAP_10uF_X5R Our 0 1uF A 5y V 850 SH m E CHANGE TO 10UF 10V X5R C403 1 10uF 10V CAP 10uF X7R gu am AO ED GB GD GB GB GB GB GB A AN o mm A AO GB GB GB BD GB GB GP GD BD T bw Am B B DB B D D B M BD BD mm A LG ELECTRONICS 3 OM ST Be BAS HSS SOM 24V gt 3 78V gt 3 92V 3 79V Power DET 12V 3158V 3 82V 3 68V R402 1 100 AAA t3 5V SOC RESET 12V T3 5V ST A 3 5V_ST A R488 N pd N 100K PD t12V PD 43 5V R463 SRESET IC SOC RESET R448 e TUE 2 7K 1 5 RESET_IC_ SOC_RESET Sane POWER_DET RESET e e 2 e C PD_ 12V R447 0474 0 1uF eE TD 0 luF 16v Teal POWER DET RESET IC408 1 APX803D29
65. R Tester After you finished all adjustments Press In start key and compare Tool option and Area option value with its BOM if E NM it is correctly same then unplug the AC cable If it is not eer AE same then correct it same with BOM and unplug AC cable For correct it to the model s module from factory Jig model Push the IN STOP key after completing the function inspection And Mechanical Power Switch must be set ON 4 2 3D function test Pattern Generator MSHG 600 MSPG 6100 Support HDMI1 4 AR Tester Lanp umed ogg IR Tester Lamp ted 086 HDMI mode NO 872 pattern No 83 1 Please input 3D test pattern like below 4 4 MHL Test A 1 Turn on TV 2 Select HDMI2 mode using input Menu 3 Set MHL Zig M1S0D3617 using MHL input output and power cord K 4 Connect HDMI cable between MHL Zig and HDMIA port 2 When 3D OSD appear ee then select OK key xc Result If The LED light is green and the Module shows normal stream OK Else NG Copyright O 2013 LG Electronics Inc All rights reserved 19 LGE Internal Use Only Only for training and service purposes 4 5 Outgoing condition Configuration m When pressing IN STOP key by SVC remocon Red LED are blinked alternatively And then automatically turn off Must not AC power OFF during blinking 5 HI POT Test 5 1 HI POT auto check preparation Check the POWER cable and SIGNAL cable insertion condition 5 2 HI POT auto chec
66. SYNC_GND2 e D2811 LYD2810 T 20V T 20V SYNC_GND1 ESD_SCART OPT EU R2815 I 22 RGB_IO 8 e CI sci FB R_OUT i 9 CD sc1_R COMP1_Pr ve RGB GND ESD_SCART R2806 R2811 L D2812 75 75 R_GND 0 T A20v D2B OUT G_OUT e 8 7 sci G COMP1 Yt D2B IN LW 02813 R2802 T 20V 75 G GND 0 ESD_SCART py R2814 15K ID e 8 e sc1_1D B_OUT R EU e CD sc1_B COMP1_Pb Rn AUDIO L IN D2814 L D2816 ee mE DAY oy R2803 ak BLEND 0 ESD_SCART 75 ESD_SCART gt AUDIO GND e EU R2812 AUDIO_L_OUT 8 10K e e SE AUDIO_R_IN e SC1 COMP1_L_IN R2804 R2818 AUDIO R OUT 8 e 470K S 12K 5 6V ri OPT gt EU EU 10K EE e CD sc1 CoMP1_R_IN R2805 R2819 L 2817 Ys 470K P 12K i OPT e DTV MNT L OUT D2818 5 6V OPT i e DTV MNT_R_OUT D2819 Bos ev OPT TH SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SECRET Fi ti SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF 15 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE NN SYMBOL MARK OF THE SCHEMETIC MODEL Te DATE BLOCK sean once SHEET LGE Internal Use Only LG ELECTRONICS Ti LGElectronics Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LG Life s Good Standard Repair Process Error symptom
67. Tool Option5 Tool Option6 Country Group i Area Option Pili ERR S ART AI White Balance E 1n Paint WR Test Pattern EDID D L Sub B C Ext Input Adjust SPK Lipsync Adjust SPDIF Lipsync Adjust 0 1 2 3 A 5 6 7 9 in Entry method White Balance Color Temp R Gain G Gain B Gain R Cut G Cut B Cut Test Pattern Backlight Reset 1 Press the ADJ button on the remote controller for adjustment 2 Enter into White Balance of item 7 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 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error i A Video error No video Audio symptom Edge LED Check the DC 24V 12V 3 5V 18 Pin Power Board lt Main Board Common 9 e mw ND 4V C ND ND V ND ND Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error i A Video error_Video error video lag stop Ted 2013 01 09 symptom Content TUNER input signal strength checking method SE EE ate ALL MODELS eL EO AUDIO SETUP TIME m amp LOC
68. V CNTCONTRGT D2820 3 3V_Normal ESD_COMP_ZENER_ROBM R2822 2820 EU D2821 75 A ESD_COMP_ZENER_KEC prd BL C SPRING ESD COMP ZENER ROHM 2821 Ge U EU p RASSI ESD_COMP_ZENER_KEC 63553 R2866 R2860 RD2 CONTACT E E 10K OPT 33K 2 2K R2838 10uF R2865 Il gt e N AV CVBS DET 2822 16v 470K EU DTV MNT R OUT _ EX zs EU RD2 C SPRING Bee ESD_COMP_ZENER_KEC EU ua C2822 D2802 22802 T e Ges AER C2823 10K EU 2864 16V RD2 E LUG S 5 6VT 0 1uF 33pF aoe 470K OPT 16v 1 8 WH C SPRING e 2 4 1 E gt COMP2 Pit E D_COMP_ZENER_KEC RD1 CONTACT D2822 1K e gt COMP2 DET Yee 5 6V OPT 2826 1 ESD_SCART_ZENER_KEC 5 6K PSD COME ZENERRORTE ud AA 2825 1 SCART1_Lout o wm o R RD1 C SPRING D2823 75 ESD_COMP_ZENER_KEC di dots SCART1_Rout C2819 R2857 EU EU EU EU RD1 E LUG LL n KSE R2858 C2820 d R2842 220K 330pF 2827 1 ESD_SCART_ZENER_KEC Y SS yo roges yo ks y 4 a H O Wei Ej TO MSTAR CLOSE TO MSTAR gt COMP2 Prt D2824 ESD_COMP_ZENER_ROHM2823 T5 D2825 ESD_COMP_ZENER_ROHM on Ro Fi a ams BD GB GB BD GB GB GB GB GB GB GB GB GB A GB GB GB GB GB A R2832 0 10K ke e e gt COMP2 L IN ge ab 2 2 D A D D D D P D D D P D D D vm P B ti a
69. VG1S3ETAO0 255 2 CD N GPIO138 As CI TS DATA O m ee ey ree eg bw PCM_5V_cTL C I 2 WAIT N GPIO136 TSODATA_ GPIO80 77 CI TS DATA I rom C SLO 2 RESET GPIO137 TSODATA GPIO81 Fans CI TS DATAT2 NC 29 C 1 NC 29 C NC 29 NC 29 Em E TSODATA GPIO82 M ABIL CI TS DATA 3 NC 28 GS NC 28 Cc 2 NC 28 NC 28 MHL OCP DET EA UART1 TX GPIO46 TSODATA_ GPIO83 XT CI TS DATA 4 MHL oCh EN mos UBRT1 RX GP 1047 TSODATA_ GPIO84 Poza CI_TS_DATATS NGA e BE m NG BZ PM TXD Kl n24 UART2_TX GPIO68 TSODATA_ GPIO85 FE Ci TS DATATS NC 26 C 4 NC 26 CA NC 26 NC 26 PM RXD B UART2_RX GPIO67 TSODATA_ GPIO86 ABTI CI_TS_DATA 7 T sys T SM MODEL_OPT_6 ag VART3_TX GPIOSO TSODATA GP1087 ee eae 1 07 pum 1 08 em 1 07 1 08 T EE EMEN MODEL OPT 7 UART3 RX GPIOS1 IC104 gt A iod AC15 FE_TS_VAL_ERR TSICLK GPIO 1706 Ce 1707 Ce 1706 1707 Pa Ser P23 nm BE TS ENG I2C SCLX I2C SCKM2 DDCR CK GPIO75 TS1VALID GPI99 FE T DETATOTT 1705 RY BY 1 06 R B 1 05 1 06 R137 22 P24 AC16 X I2C_SDA 12C_SDAM2 DDCR_DA GPIO74 TS1SYNC GPIO100 NC MAE MADE 1 04 RE 1 05 RE 1 04 1 05 ed Kl o5 AD FE TS DATALO ernal demod out T 2 RGB DDC SDA 5 DDCA_DA UARTO_TX TA_ GPIO91 Ki FE TS DATATI NC 25 CH NC 25 SH Nc 25 NC 25 RGB DDC SCLK amp DDCA CK UARTO RX TA_ GPIO92 SE FE TS DATAT2 NC 24 NC 7 NC 24 NC 7 NC 24 NC 24 zm zs sl PA GPIO93 2613 FE_TS_DATA 3 FE T DATALOJ NC_23 8 23 NC_8 NC_23 NC_23 P2 tec EXT RRA EE
70. VINPUT SPDIF OUT w Fiber Optic SHIELD FIX_POLE THE N SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET a rere re Fe LG ELECTRONICS EE MODEL DATE Copyright O 2013 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes TH FILRE AND ELECTRICAL SHOCK HAZARDS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE NN SYMBOL MARK OF THE SCHEMETIC AVDD_DDRO x AVDD_DDRO AVDD_DDRO AVDD_DDRO A a A caj P D Ze E 1 5V_DDR AVDD_DDRO Orge B s Awe N NA asa a aS a A A 11202 Xx SE N t WM x CIC21J501NE E T Es e e a A MVREFDO e DO A MVREFCA B MVREFCA CE E e B MVREEDO E Fa 9 si Si m si 06 3 EH Di 3 oe E SH oo oo o oo e i ola o o etl oud o nas a sje S18 Oo a alm alm ole w e
71. XB4 ds oo ee FHD c1100 0 luF 16V RXB4 RXB4 MS Ke RXB3 RXBO ui o EU pin assign is different from NON EU Because of position of HD wafer RXB3 RXBO Ui n RXA4 RXAO RXA0 RXA4 RXAO RXAO Y 1 RXA34 RXA1 RXA1 2 E LVDS SEL RXA3 RXA1 RXA1 3 E 3 RXACK RXA2 RXA2 4 3 3V Normal RXACK RXA2 RXA2 5 5 OPT RXA2 RXACK RXACK 5 der 8 RXA3 RXA2 RXACK RXACK hd d RXA3 RXA1 RXA3 RXA3 8 OPT 8 R1101 L K RXA1 RXA3 RXA3 9 9 RXACK m RXAO RXA4 RXA4 P a B RXACK BEE RXAO RXA4 RXA4 1 1 2 RXA4 S RXA2 3 DEN RXB4 RXBO 3 EE E RXA3 RXB4 RXBO 1 i 5 RXB3 RXB1 5 T 6 RXACK SSC RABI 6 RXA1 RXACK RXBCK RXB2 E l 8 RXBCK RXB2 3 ee LVDS SEL 9 RXA2 RXB2 RXBCK 9 Sen t3 3V Normal 20 K IRXA2 RXB2 RXBCK e OPT En RXB1 RXB3 R1103 3 3K 22 RXA1 4 RXB1 RXB3 e i PANEL VCC RXBO RXB4 OPT A RXA1 e i R1104 RXBO RXB4 10K an CI RxA0 25 HD SE e 3 L1101 SS 120 CIS21J121 27 8 A RXB4 e c1101 29 RXB4 pal He I IE 1 16V 30 RXB34 FOR FHD REVERSE Soit 31 RXB3 f ge Change in S LR RXBCK 33 RXBCK a Pol change i RXBCK RXB1 P agp ED GB GB GB GB GB A GB GB GB AO GB GB GB A GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB B RXBCK RXB1 ep emm emm emm emm emm D emm emm emm emm emm emm emm emm emm emm emm emm em
72. _DVB_T2 K11 617 RF SWITCH CTIK e ec e e NON_DVB_T2 De e VON z x p E T E De E ae E e la i m 3 5 5 L IC101 33pF ie 5 xo xo a a a 10uF 10V 00 5 E T em wen o eg mei i le em wm a a emm om S 15 2 15 CAP 10uF X7R M12 G19 emm emm emm emm emm emm emm emm emm emm emm mn Se S d GES Ba le o e es DC 6 G 25 MSD804KKX F_NIM CHINA F NIM CHINA sc o Ze Ca M13 9 MIMI A NL CRI BB LB SN ey E S i c204 1 SS DC_7 G EEE C250 0 1uF R216 47 TU BE T A MES z RS gt pl Dee E N N H S7LR M_NON_MS10 p 0 1uF R218 47 T R B HANGE TO SH E um O o 9 10uF 10V E SE S 2 SSS SS EE m xd egi eege F NIN Rrha o O Jour 10v x5R CAP 10uF X7R LE ELM E LS RXACKP NI CHANGE TO e TU J3 S Y IM AD3 ANALOG SIF 10UF 10V X5R a DC 11 G ks s Close to MSTAR 7 DE DC_12 G a RXAOP nt us mes uuo cem SHE E E Fi AC3 AVDD_AU33 DC_13 G RXAON 3 3V_Normal T10 7 H17 K2 AE3 A DC 14 G RXA1P i208 5 H18 K1 L227 G RXAIN a BLM18PG121SN1D BLM18PG121SN1D HIS L2 EE AD NON_DVB_T2 Iess e T G Ge a2 00 0240 C241 ar eee G 516 T5 NON_DVB_T2 9 1UF 0 luF FB CORE CH FB CORE G lt z4 DDCDA_DA GP1027 C282 NON_DVB_T2 R16 E J11 POWER_ON OFF 0 1uF R220 m vs PDCDA_CK GP1O26 TOK e nip PA T J12 G POWER ON OFF 2X 1 HOTPLUGA GPIO22 le NON_DVB_T2 mia NC J13 7 R219 MIUVDDC DD_DDR e
73. aced component and adjacent components and the circuit board to prevent excessive component temperatures Circuit Board Foil Repair Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board causing the foil to separate from or lift off the board The following guidelines and procedures should be followed when ever this condition is encountered At IC Connections To repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern side of the circuit board Use this technique only on IC connec tions 1 Carefully remove the damaged copper pattern with a sharp knife Remove only as much copper as absolutely necessary 2 Carefully scratch away the solder resist and acrylic coating if used from the end of the remaining copper pattern 3 Bend a small U in one end of a small gauge jumper wire and carefully crimp it around the IC pin Solder the IC connection 4 Route the jumper wire along the path of the out away copper pattern and let it overlap the previously scraped end of the good copper pattern Solder the overlapped area and clip off any excess jumper wire At Other Connections Use the following technique to repair the defective copper pattern at connections other than IC Pins This technique involves the installation of a jumper wire on the component side of the circuit board 1
74. ces create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication always follow the safety precau tions Remember Safety First General Servicing Precautions 1 Always unplug the receiver AC power cord from the AC power source before a Removing or reinstalling any component circuit board module or any other receiver assembly b Disconnecting or reconnecting any receiver electrical plug or other electrical connection c Connecting a test substitute in parallel with an electrolytic capacitor in the receiver CAUTION A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explo sion hazard 2 Test high voltage only by measuring it with an appropriate high voltage meter or other voltage measuring device DVM FETVOM etc equipped with a suitable high voltage probe Do not test high voltage by drawing an arc 3 Do not spray chemicals on or near this receiver or any of its assemblies 4 Unless specified otherwise in this service manual clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner cotton tipped stick or comparable non abrasive applicator 10 by volume Acetone and 90 by volume isopropyl alcohol 90 99 strength CAUTION This is a flammable mixture Unless specified otherwise in this service manual lubrication of contacts in not required 5 Do not
75. e QPSK 1 2 2 5 2 3 3 4 5 6 16 QAM 1 2 2 5 2 3 3 4 5 6 64 QAM 1 2 2 5 2 3 3 4 5 6 256 QAM 1 2 2 5 2 3 3 4 5 6 gt 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 1 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 Scart 1 Jack is Full scart and support RF OUT analog 4 System PAL SECAM NTSC PAL60 Common port Common port upport HDCP omponent 8 AV s audio input is used by common port JPEG MP3 DivX HD CI UK Finland Denmark Norway Sweden Russia Spain Ireland Luxemburg Belgium Netherland Cl France Canal Italy DGTVi CI Switzerland Austria Slovenia Hungary Bulgaria Cl Switzerland UPC Cablecom Netherland Ziggo Germany KDG CWB Finland labwise Cl Germany Astra HD LA58 for DLNA T2 Model LA58V LA58U LN54V LN54U for MHEG LGE Internal Use Only 5 Video resolutions 2D 5 1 Component Input Y Ca Ps CRIPR 6 720400 39147 19994 ermee o 8 11200720 mm 600 742b HOIVTMP 9 1200720 un S09 om HDOIVTMP 1920 1080 33 71 29 97 74 176 HDTV 1080P 5 2 HDMI Input PC DTV DC PON SE 1 euo si48 700 257 EGh X 6 sre 5434 mmm 8000 VESA 8 eme 6398 60020 1080 Eesen
76. e SE IC101 R156 10K 7 o e SEU NBC MSDSOAKKX RI402R1412 R1442 RIAS Y23 R157 100 K K 2K 2 2K SS i PWM DIM C PWM2 us SYM A NE OPT E AMP_RESET ze CP 039 m gt RXAO CICI le AMP_SDA 95 FRC_RESET FRC RESETC rs lt 040 SE gt RXAO 2 2uF Kl AMP SCL SC 5V DEI HDMI 2 se 991041 iu gt RXA1 5V DET HDMI 4 GPIO42 gt RXA1 12C_SDA T23 E5 AD25 AV_CVBS_DET GPIO43 gt RXA2 M ES st 25 2024 AV2 CVBS DET GPIO44 gt RXA2 B7 AE23 SC1 COMP1 DET GPIO45 gt RXA3 E7 AC23 HP_DET GPIO48 gt RXA3 L AD F7 AC22 ep emm emm emm emm D P P emm D emm P oD S2_RESET lt aps CP1049 ADDS gt RXA4 0 0 e emm emm emm en an emm emm emm TUNER_RESET EES G 052 gt RXA4 o gt 2 Bs a s a com a Ge Sac Z c tt eg ee MODET ODT NO E S Pat A9 V23 EEPROM MODEL_OPT_1 GPI055 gt RXB0 3 3V_Normal zi AB1 725 A PM MODEL OPTION fo LNA CTRL 1 C we 120 SCKMO GPIOS6 53 gt RXB1 GE LNA_CTRL_2 C aso 12C SDAMO GPIO57 de OOO RXB1 TUS PM MODEL OPT O MODEL OPT 2 aca SP1076 SS LD RXB2 A HIGH HD NON EU BR_RESET_DEMOD X GPIO77 OD RXB2 M24256 BRMN6TP C105 R SES BASS gt rxB3 0 1uF LOW HD_E Y24 NVRAM ST I NVRAM_RENESAS 5 RU diff gt RXB3 HD LVD rn 4 1 rent
77. eads to the corresponding leads extending from the circuit board and crimp the U with long nose pliers to insure metal to metal contact then solder each connection Power Output Transistor Device Removal Replacement 1 Heat and remove all solder from around the transistor leads 2 Remove the heat sink mounting screw if so equipped 3 Carefully remove the transistor from the heat sink of the circuit board 4 Insert new transistor in the circuit board 5 Solder each transistor lead and clip off excess lead 6 Replace heat sink Diode Removal Replacement 1 Remove defective diode by clipping its leads as close as pos sible to diode body 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 Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes 3 Solder the connections CAUTION Maintain original spacing between the repl
78. ess Detail Technical Manual Error symptom lt ALL MODELS gt LA3 LAA Se 4272 43 1 RE T LI WOE SAIL 30311 2 7201 2 11 29 0 J WPCS SIZE ETT 3 rur r gr D ER E Y i e Ee Gun EE Pr T phat A A Pieri t ph rt ond HH b re tg p TN Gen om es RENSE hi IW S D i ELI gt 2 B Ke gc Ae bh IO sis Y t E 20 B 2 3 SE T EH sort ZA s P A ia a 5 qr AE ge BAR COME 5 d fasi ER e e BRE e Fi 74 Bi pi EINE J Wddddlddddd ddl T Checking order 1 2 Check IR cable condition between IR amp Main board 3 Check the st by 3 5V on the terminal 4 4 When checking the Pre Amp when the power is in ON condition it is normal when the Analog Tester needle moves slowly and defective when it does not move at all Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes D Function error No response in remote controller Established Revised Content Remote controller operation checking method date P600 1 D I c lalo kr 4 8 VST A GND LZS OR _8 GN 8 Gano ON amp goo IND LGE Internal Use Only
79. ining and service purposes LGE Internal Use Only Appendix Exchange the Module 2 P Vertical Block Vertical Line Vertical Block Source TAB IC Defect Source TAB IC Defect Source TAB IC Defect Horizontal Block Horizontal Block Horizontal line Gate TAB IC Defect Gate TAB IC Defect Gate TAB IC Defect Un repairable Cases In this case please exchange the module Horizontal Block Gate TAB IC Defect Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error i B Power error _No power Established 2013 01 09 symptom Content Check front display LED Ge NENNEN Screen Povver indicator and Remote control sensor Speakers Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual LCD TV symptom B Power error _No power 2013 01 09 Content Check power input voltage and ST BY 3 5V RIE date A12 Edge LED Check the DC 24V 12V 3 5V 18 Pin Power Board Main Board Common TT Li a 6 PDIM 2 GND 24V Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error i B Power error _No power Established 2013 01 09 sy
80. k 1 Pallet moves in the station POWER CORD AV CORD is tightly inserted 2 Connect the AV JACK Tester 3 Controller GVVS103 4 on 4 HI POT test Auto f Test is failed Buzzer operates f Test is passed GOOD Lamp on and move to next proc ess automatically 5 3 Checkpoint 1 Test voltage Touchable Metal 3 KV min at 100 mA SIGNAL 3KV min at 100 mA 2 TEST time 1 second case mass production 3 TEST POINT Touchable Metal gt LIVE amp NEUTRAL Touchable Metal SIGNAL gt LIVE amp NEUTRAL SIGNAL 6 Model name amp Serial number D L Press Power on key of service remote control Baud rate 115200 bps Connect RS232 Signal Cable to RS 232 Jack Write Serial number Must check the serial number at the Diagnostics of SET UP menu Refer to below Software Update N D Sound Test WW LI Signal Test a Product Service Info 6 1 Signal Table CMD LENGTH ADH ADL DATA1 Datan CS DELAY CMD AOh LENGTH 85 94h 1 16 bytes ADH EEPROM Sub Address high 00 1F ADL EEPROM Sub Address low 00 FF Data Write data CS CMD LENGTH ADH ADL Data_1 Data n Delay 20105 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes 14 6 2 Command Set Adjust mode CMD hex LENGTH hex EEPROM WRITE n bytes Write n 1 16 Description FOS Default write 7m
81. l b Serial No Controlled on production line c Month Year Controlled on production line ex Week 01 gt 01 Year 2013 gt 17 fix d Model Name Hex cf TV set s model name in EDID data is below MODEL NAME HEX LG TV 00 00 00 FC 00 4C 47 20 54 56 OA 20 20 20 20 20 20 20 LG TV e Checksum Changeable by total EDID data FHD 8 Bit EDID C S data HDMI i 81000 42 Paria u EMD 25 HDMI Hex Block1 224 15 HDMI2 f Vendor Specific HDMI Model name HEX 67030C001000801E 67030C002000801E Input HDMI1 HDMI2 3 4 Function Check Check display and sound m Check Input and Signal items 1 TV 2 AV SCART CVBS 3 COMPONENT 480i 4 HDMI Display and Sound check is executed by Remote control lt Caution gt Not to push the INSTOP key after completion if the function inspection LGE Internal Use Only 4 Total Assembly line process 4 1 VVhite Balance adjustment W B Equipment condition CA210 LED gt CH14 Test signal Inner pattern 80IRE Above 5 minutes H run in the inner pattern power on key of adjust remote control If it is executed W B adjustment in 2 3 minutes H run it is adjusted by Target data Goss OS LED Direct LED module Cool CO E Wam am Zi Normal line Aging time mim LX y x ez e 320 L 2 35 zm 285 298 305 3 4 Les Tare poe se T L s 203 2ra aso 200 20 L s 964 2r arr 286 7
82. m a carpeted floor can generate static electricity suf ficient to damage an ES device General Soldering Guidelines 1 Use a grounded tip low wattage soldering iron and appropri ate tip size and shape that will maintain tip temperature within the range or 500 F to 600 F 2 Use an appropriate gauge of RMA resin core solder composed of 60 parts tin 40 parts lead 3 Keep the soldering iron tip clean and well tinned 4 Thoroughly clean the surfaces to be soldered Use a mall wire bristle 0 5 inch or 1 25 cm brush with a metal handle Do not use freon propelled spray on cleaners 5 Use the following unsoldering technique a Allow the soldering iron tip to reach normal temperature 500 F to 600 F b Heat the component lead until the solder melts c Quickly draw the melted solder with an anti static suction type solder removal device or with solder braid CAUTION Work quickly to avoid overheating the circuit board printed foil 6 Use the following soldering technique a Allow the soldering iron tip to reach a normal temperature 500 F to 600 F b First hold the soldering iron tip and solder the strand against the component lead until the solder melts c Quickly move the soldering iron tip to the junction of the component lead and the printed circuit foil and hold it there only until the solder flows onto and around both the compo nent lead and the foil CAUTION Work quickly to avoid overheating the ci
83. m emm D emm emm emm emm emm emm emm af RXB2 RXB2 RXB2 RXB2 RXB1 RXBCK RXB1 RXBCK RXBO RXB3 ap GRP GRP GP GB A GB GP GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB A GB GB GB GB GB GB GB GB GB GB GB GB A GB GB GB GB GB GB GB GB GB B N N oo mn ap eum GB GB GP GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB A GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB GB A RXBO RXB3 i 1 i 1 to THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION ee ee SECRET ig ELECT DATE THE CRITICAL COMPONENTS IN THE AN SYMBOL MARK OF THE SCHEMETIC GElectronics SL LILK GHEET Copyright O 2013 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes i d i i i y 1 y i i i I i i i i i J SCART COMPONENT amp COMPSIT SCART AMP 4 i i i i i i COMPONENT 12V A JK2802 PPJ245 02 GN E LUG i EU C2817 GN C SPRING 0 0 1uF gt COMP2_Y AV_CVBS_IN AZA a 1 29
84. mptom Checking method when power is ON e Edge LED Check the DC 24V 12V 3 5V 18 Pin Power Board Main Board Common o HN ND GND V 24V ND GND N C ND ND Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual LCD TV B Power error _ Off when on off whiling viewing 2013 01 09 IN START bu Check Power Off Stat ata x Power Off Status H POWER OFF BY REMOTE EY System 1 System 2 odel Number D L Test Option a gt j A S W Version MICOM Version SP Boot Version BOOT Version EDID Version HDMI 0 0 01 hip Type External ADC MAC Address 00 00 00 00 00 00 Spectrum Demod F W Ver Null 10 nc Level i P Pur xix En ET a UD QO sd LI de LINI E X Demod F W Ver 0x111 um Stable Count Access USB Status 1 WIY MC 12 001 Test Debug Status RELEASE 13 Access Code UTT 3 APP History Ver 4521 POL DB LGD RF x2178 word 16 POWER OFF POWER POWER OFF BY UNKNOWN POWER OFF BY UNKNOWN POWER OFF BY UNKNOWN POWER OFF BY UNKNOWN POWER OFF BY UNKN we POWER EE BY UNENU CH m KA Entry method 1 Press the IN START button of the remote controller for adjustment 2 Check the entry into adjustment item 3 Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use O
85. nc All rights reserved LGE Internal Use Only Only for training and service purposes HDMI REAR 1 SIDE 1 MHL A 9V_HDMI_4 A 5V_DET_HDMI_4 A 57 HDMI 2 A 5V_DET_HDMI_2 GND BODY SHIELD R807 e i I 10K E R830 100 SE e HPD4 R826 i DV dee L R834 100 Ss e e e TVA806 e DDC_SDA_4 END 1 8K o LN ESD_HDMI fl 0801 10K e L E EE DDC SCL 4 e MMBT3904 NXP e HPD2 TVA805 mcus Oes POSA DDC_DATA ESD HDMI R803 LL X R832 100 1 8K ip TVA802 00 POR CUR A VA807 VA808 om ESD_HDMI R833 100 e 020 e LO DEC SEES ESD_HDMI ESD_HDMI VA801 20 He Zo x ESD HDMI1IVARISHOR SS VA804 CE_REMOTE ESD_HDMI p HDMI_CEC T Kg ed CK R805 0 Me E 2 D828 HDMI1 ARC SA CK GND e RCLAMPOS24PA HDMI_CE a SE i CK 2 9
86. nce keep it with the surface of the Module and Color analyzer s prove vertically 80 100 3 Aging time After aging start keep the power on no suspension of power supply and heat run over 5 minutes Using no signal or POWER ONLY or the others check the back light on Auto adjustment Map using RS 232C to USB cable RS 232C COMMAND CMD ID DATA Wes E White Balance Start White Balance End RS 232C COMMAND CENTER CMD ID DATA MIN DEFAULT MAX Coa mia wam Cat mia Warm Gain jg a fia oo 172 1192 1192 1192 6 Gain jn i fie 19 172 192 192 1192 Bain ji i f 19 192 192 172 1192 je je e us eo a 10 106 Ip ecu a a je 110 Caution Color Temperature COOL Medium Warm One of R Gain G Gain B Gain should be kept on OxCO and adjust other two lower than CO When R G B Gain are all CO itis the FULL Dynamic Range of Module Manual W B process using adjust Remote control After enter Service Mode by pushing ADJ key Enter White Balance by pushing key at 8 White Balance EZ ADJUST 0 Tool Option 1 Tool Option2 2 Tool Option3 3 Tool Option4 4 Tool Option5 5 Tool Option Commercial VVhit Balance Color Temp R Gain 172 G Gain 172 B Gain 192 R Cut 64 G Cut 64 B Cut 64 Test Pattern ON Backlight 100 Reset To Set 6 Country Group 7 Area Option 8 ADC Calibration 10 10 Point WB 11 Test Pattern 12 EDID D
87. nly Standard Repair Process Detail Technical Manual symptom C Audio error No audio Normal video 2013 01 09 Content Checking method in menu when there is no audio da NENNEN ALL MODELS Checking method 1 Press the MENU button on the remote controller 2 Select the AUDIO function of the Menu 3 Select Sound Out TV Speaker If you set Sound Out menu as External Speaker LG Sound Sync TV Speaker will not work Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error i LCD TV symptom C Audio error No audio Normal video Established 2013 01 09 Content Voltage and speaker checking method LJ EE when there is no audio date Check the DC 24V 12V A 18 Pin Power Board gt Main Board s sw e owes z ev le w 7 lt ALL MODELS gt Checking order when there is no audio 1 Check the contact condition of or 24V connector of Main Board 2 Measure the 24V 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 Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Proc
88. ode data write Vtotal V_Frequency Sync_Polarity Htotal Hstart Vstart 0 Phase Data write Model Name and Serial Number write in EEPROM 6 3 Method amp notice 1 Serial number D L is using of scan equipment 2 Setting of scan equipment operated by Manufacturing Technology Group 3 Serial number D L must be conformed when it is produced in production line because serial number D L is mandatory by D book 4 0 Manual Download Model Name and Serial Number If the TV set is downloaded by OTA or Service man sometimes model name or serial number is initialized Not always There is impossible to download by bar code scan so It need Manual download 1 Press the Instart key of Adjustment remote control 2 Go to the menu 6 Model Number D L like below photo 3 Input the Factory model name or Serial number like photo Nl 1 Adjust Check 2 ADC Data 3 Power Off Status A System 1 5 System 2 Model Number D L 1 Serial Num BKJYTIO7 7 Test Option Press OK to Save 8 External ADC 9 Spread Spectrum 10 Ge Level 11 Stable Lount 12 ODC Test UIT 6 APP History Ver 638 POL DB LGD CF L I xooooxx 4 Check the model name Instart menu Factory name displayed ex 32LV3400 ZG 5 Check the Diagnostics DTV country only Buyer model displayed ex 32LV3400 ZG LGE Internal Use Only 7 MAC Address Cl key download 7 1 MAC Address 7 1 1 Equipment 8 Condition Play
89. orma N External Input Component creen and HDMI by connecting Jig pattern Generator Set top Box Main B D Y etc Copyright 2013 LG Electronics Inc Gen reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error symptom gt A11 Check Y Power LED Stand By Red Check Power cord was inserted properly Check ST BY 3 5V d Y i A12 Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes B Power error Sola lence 2013 01 09 NEN date Notes Reviseddate 00000 7 14 A13 Y Check Power DC Power on Replace by pressing Power Key On Remote control Power B D On High gt A4 Y orma Replace Main B D oltage orma oltage N N Replace Power B D LGE Internal Use Only Standard Repair Process Error symptom Off when on off while viewing power auto on off Check outlet Check A C cord Check Power Off Mode Check for all 3 phase power out Fix A C cord 8 Outlet and check each 3 phase out If Power Off mode is not displayed Check Power B D voltage Xx Caution Check and fix exterior of Power B D Part Power off List POWEROFF REMOTEKEY POWEROFF SLEEPTIMER POVVEROFF INSTOP POWEROFF AUTOOFF POWEROFF ONTIMER Please refer to the all cases which can be displayed on power off mode Normal POWEROFF RS232C P
90. out permission of manufacturer DDD CV Cv CIE Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes Set Stand Stand Body TO LGE Internal Use Only IC102 emm i emm emm Oe NAND FLASH MEMORY dE EN CHIP Config LED R BUZZ
91. problem or not By connecting RF Cable at other equipment DVD Player Set Top Box Different maker TV etc Check RF Cable Connection 1 Reconnection 2 Install Booster Check Tuner soldering Check S W Version Contact with signal distributor Replace or broadcaster Cable or Air Main B D Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process 8 Established A Video error AH du symptom ymp Tuning fail Picture broken Freezing Revised date m Ab Check RF signal cable DVB satellite signal or not Check whether other equipments have problem or not By connecting RF Cable at other equipment Set Top Box Different maker TV etc Check satellite setting Ge AG Geen SE E Check AN Check Replace ing S W Version Tuner soldering Main B D Check Satellite connection Y S W Upgrade 4 14 Check RF Signal level DiSEqC motor etc si AM DIE Change satellite setting Ge broadcaster match vvith installed ANT Cable or Air Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Established EPOR A Video error 2013 01 09 symptom Color error I c AT A8 A9 Check color by input e GE replace Link EE Color n Color Color Bos ONENT ee LVDS and eror Replace
92. rcuit board printed foil d Closely inspect the solder area and remove any excess or splashed solder with a small wire bristle brush LGE Internal Use Only IC Remove Replacement Some chassis circuit boards have slotted holes oblong through which the IC leads are inserted and then bent flat against the cir cuit foil When holes are the slotted type the following technique should be used to remove and replace the IC When working with boards using the familiar round hole use the standard technique as outlined in paragraphs 5 and 6 above Removal 1 Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts 2 Draw away the melted solder with an anti static suction type solder removal device or with solder braid before removing the IC Replacement 1 Carefully insert the replacement IC in the circuit board 2 Carefully bend each IC lead against the circuit foil pad and solder it 3 Clean the soldered areas with a small wire bristle brush It is not necessary to reapply acrylic coating to the areas Small Signal Discrete Transistor Removal Replacement 1 Remove the defective transistor by clipping its leads as close as possible to the component body 2 Bend into a U shape the end of each of three leads remain ing on the circuit board 3 Bend into a U shape the replacement transistor leads 4 Connect the replacement transistor l
93. t Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge buildup or expo sure of the assembly 3 Use only a grounded tip soldering iron to solder or unsolder ES devices 4 Use only an anti static type solder removal device Some sol der removal devices not classified as anti static can generate electrical charges sufficient to damage ES devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ES devices 6 Do not remove a replacement ES device from its protective package until immediately before you are ready to install it Most replacement ES devices are packaged with leads elec trically shorted together by conductive foam aluminum foil or comparable conductive material 7 Immediately before removing the protective material from the leads of a replacement ES device touch the protective mate rial to the chassis or circuit assembly into which the device will be installed CAUTION Be sure no power is applied to the chassis or cir cuit and observe all other safety precautions 8 Minimize bodily motions when handling unpackaged replace ment ES devices Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot fro
94. t gt LEV Ge EE 10uF 02643 C2644 02646 C2648 ES 10V 22ur 0 luF 22uF So0 1ur e e 10v 16v 10v 16V E S S S SE S sli S sisisibsliiil SES y i olf o 8 off ell ell e mo t ols off of A off ol ol ols olg o z M 9 o o 5 o 5 do nc Neede 5 o X o X 5 S 5 pes Be yeo ge 3 3V_TU_CHINA O e 2 o o Oo Z Oo Oo 2 e o L2603 i BLM18PG121SN1D e e VON cae sode er cur Ge LLL CAP 10uF X7R CHINA E ie Ee as a ap emm a D D D D D D D D D D D D D D D D D 10V 16V 10uF 10v IH Fi ti Ti THE WHEN SERVICING IF 15 SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR CRITICAL COMPONENTS IN THE NN SYMBOL MARK OF THE SCHEMETIC Copyright 2013 LG Electronics Inc All rights reserved Only for training and service purposes SECRET LGElectronics LG ELECTRONICS MODEL 67590 DATE BLOLK romero SHEET LGE Internal Use Only DVB S2 LNB Part Allegro Option LNB Ha ae Cen re aN ELM re he ee i Input trace widths should be sized to conduct at least 3A 3A Ouput trace widths should be sized to conduct at least 2A 12V_LNB D2705 1 Max 1 3A 40V D2703 LNB SX34 NIE 40V LNB SMAB34 C2708 10uF C2705 25V 10uF 10uF 10uF LNB
95. tects the technician from accidents resulting in personal injury from electrical shocks It will also protect the receiver and it s components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation If any fuse or Fusible Resistor in this TV receiver is blown replace it with the specified When replacing a high wattage resistor Oxide Metal Film Resistor over 1 W keep the resistor 10 mm away from PCB 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 onm 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 MO and 5 2 MO 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
96. tion 1 and push OK key 3 Punch in the number Each model has their number 4 Completed selecting Tool option 3 1 ADC Process If ADC processes as OTP There is no need to proceed internal ADC Enter Service Mode by pushing ADJ key Enter Internal ADC mode by pushing gt key at 7 ADC Calibration EZ ADJUST ADC Calibration ADC Comp 480i OK ADC Comp 1080p OK 0 Tool Option1 1 Tool Option2 2 Tool Option3 3 Tool Option 4 Tool Option5 Start Reset 5 Tool Option Commercial 6 Country Group 7 Area Option 9 White Balance 10 10 Point WB 11 Test Pattern 12 EDID D L 13 Sub B C 14 Ext Input Adjust lt Caution gt Using power on key of the Adjustment remote control power on TV T um Calibration Protocol RS232 m Adjust n transfer the Mode In Adjust MODE Mode In Carry the command Automatically adjustment EES Ge E ILL The use of a internal pattern Adjust Sequence aa 00 00 Enter Adjust Mode xb 00 40 Component Input4801 ad 00 10 Adjust 480i Comp1 aa 00 90 End Adjust mode Required equipment Adjustment remote control 3 2 EDID Download After enter Service Mode by pushing ADJ key Enter EDID D L menu Enter START by pushing OK key EZ ADJUST EDID D L 0 Tool Option1 HDMI1 NG 1 Tool Option2 HDMI2 NG 2 Tool Option3 Reset 3 Tool Option 4 Tool Option5 5 Tool Option Commercial 6 Country Group 7 Area
97. to the customer Copyright O 2013 LG Electronics Inc All rights reserved Only for training and service purposes rer Leakage Current Hot Check See below Figure Plug the AC cord directly into the AC outlet Do not use a line Isolation Transformer during this check Connect 1 5 K 10 watt resistor in parallel with a 0 15 uF capacitor between a known good earth ground Water Pipe Conduit etc and the exposed metallic parts Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms volt or more sensitivity Reverse plug the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part Any voltage measured must not exceed 0 75 volt RMS which is corresponds to 0 5 MA In case any measurement is out of the limits specified there is possibility of shock hazard and the set must be checked and repaired before it is returned to the customer Leakage Current Hot Check circuit AC Volt meter Good Earth Ground such as WATER PIPE To Instrument s CONDUIT etc exposed METALLIC PARTS 1 5 Kohm 10W When 25A is impressed between Earth and 2nd Ground for 1 second Resistance must be less than 0 1 O Base on Adjustment standard LGE Internal Use Only SERVICING PRECAUTIONS CAUTION Before servicing receivers covered by this service manual and its supplements and addenda read and follow the SAFETY PRECAUTIONS on page 3 of this publication NOTE If unforeseen circumstan

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