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LG 47LT760H-ZA User's Manual

1. ETNBUB DVDD33 ETNHUB AVDD33 EY 18403 a o 88 18PG1218 3 2 gt 9 i a d 2 d E 5 x E 2 8 ES d S 232 E E Se E 3 138 6 E amp B 8 ER STRAPPING PIN CONF 2 BR d S ES ZS K ta 2 E z BH z S J DU 7 ETNHUB_DVDD33 z Se A 3 E ad le oh RE cag ETNHUB_DVDD18 dud ETNHUB AVDD33 3 mo SERE 330 A 333 ETHERNET_PWR_ON OFF 4 2 S 977 a o daz E ASA A ETNHUB DVDD33 EON S NS ES z 89 Seek ai v S Ao see sp nel xao q gt 2355 om mita SS ow 2 223 gal BR 3 SIE o a 2 o la aal Ao z 3 3 3 3 3 as S221922 NEES 2 mou m lt n 2 aja las eee NEI sa a 4 z Jel E HS NW ex lo z A AUTO NEGO L gt EIS DEI as SS S18 28 alas S S 2 sa 4 zz DER zaag og RR 3 a E 58 lals s a ARE EEEa H 2 z EE PHY2PRXbv O E IC8400 a lala s ais RE Litto gee zZ AES 2 a S 5822 sios 6 212 6
2. C1 CD2 Lo ELECTRONICS MODEL en DATE BLOCK DEE LGE Internal Use Only FROM LIPS amp POWER B D 3 5V_ST MMBT3906 NXP 02401 R2408 S ES R2464 V 4 7K rox 5 R2401 S sados R2453 e APE MMBT3904 NXP 9 opt I c 1 OPT o MTK NON EPI 0 luF VI Sg MTK_NON_EPI 82423 0 m D L D1MO VS R2425 POWER 16 VSYNC I Para 100 INV CTL R246 0 J S R2426 PWM_DIM2 aalt rcp PWM DIMI sos gt 2 4 T ay FEN SP 16 20 23 LD GND OR USE LE N L D OPEN x E L D USE ERROR OUT iud A FOR LPB Download To LED DRIVER Power_ DET 5wv Normal 12V 12V A 5V_NORMAL 12407 BLM18PG121SN1D canis emm emm emm emm emm emm emm emm emm emm emm emm emm emm at
3. Set Stand Stand Base Body Copyright 2012 LG Electronics Inc All rights reserved 27 LGE Internal Use Only Only for training and service purposes EAX6430790 EAX6443420 LD22 LC22 LT22 LJ22 LA22 LB22 y Tas talsload cap x100 1 I mo Jur I Crystal Matching Test result I 27pF gt 20pF gt 24pF 12p d uit y X TAL D 3 3V_NORMAL NORMAL NVRAM RO 27482 E s write Protection MT5369 XTAL IN II
4. I R9110 R9104 I 100K 43 Switching noige reducing MPS recommend IC9101 09113 II 0 1uF MP5000DQ 50V IC9102 R911 1 I I MP4460DQ LF Z EP GND 22 24V GND SOURCE 5 E EXT 12V close to pin L C9105 Eur op E SUPE DV DT SOURCE 4 e E S 50v Y HERAS 10136 N sw_2 En JIN_2 L9101 MBRA340T3 21 ao 9 a R9101 CB3216PAS501E z 1K ENABIE FAULT SOURCE_3 i EE EXT12V_CTRL ag EN i 3 3uFZZ0 1ur 50V 50V C910 R9117 I LIMIT SOURCE_2 SEH COMP Fi 0 TE FREQ 200K 212 R9100 09114 1 8W A 8K 150pF F n Pon 13 NC SOURCE_1 p L9103 P 12V R9107 Se R9118 R9106 CB3216PA501E A 150K 270K 10K S 1 1 16w 1 16W 1 1 vec 19100 106 09106 R9114 2208 22uF 09104 20K I Te 0 1uF 1 16W 50v 1 P_l2v A close IC1800 IC9103 e ar T R9103 c9111 TOK TPS54327DDAR EP GND BEEN EXT5V_CTRL l 0uF 25V EXT 5V EXT 12V xo EN VIN EX 1 8 EXT 5V d R9113 R9112 C9107 T 10 56K LIK VFB Zo _ vast 0 1uF R9108 R9109 SE l 209 2080 100K E 50V L9104 L9102 BLM18PG121SN1D iw 3 6uH ms o o a a 6d D9101 NR8040T3R6N 29103 co101 v v 1C9100 GND 22ur 22uF APX803D29 16v 16v I gt EXT_PWR_DET lee A E L cmi Ue imis ere 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 ESSENT
5. 1065 102404 I E TPS54327DDAR EP GND FOR 02429 12 5DA I 0 Lup FOR I 16V 24V gt 3 48V 12V gt 3 58V I ST_3 5V gt 3 5V I us d b em em em em em em em em em em em emm emm em em emm em em emm em em em emm em em em emm em lt DDR MAIN Lo Y E f 1 2V_MTK_CORE 113v fo ag RES e 3 3V_NORMAL zu 12410 os A uS A OPT Ge Placed on SMD rOP R24000 1 5V_DDR vine vo c240 gt 4700pF L2405 3 R2402 soy 3 BLM18PG121SN1D Let j as AS e S EUR Z ior Z 3 6uH 16 VBST REG Lam lanas fi u dunt con Los cl 4A A L 02404 S ES is T LIU oae GN Eise 16v L 3 a SQV wi GND 4 POWER_ON OFF1 m e 10 R2407 PGND2 T PG gus 20001 en Vout 0 8 1 R1 R2 WA d E Ea 3 3V_NORMAL E 2 3A 0 145 Vout 0 827 1 R1 R2 1 521V THE Ah 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 SCHEMETIC LGElectronics MEDEL DATE LS ELECTRONICS BLOCK coros SHEET LGE Internal Use Only Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes 5V_HDMI_4_JACK 5V_HDMI_3_JACK ODY_SHIELD R3308 100 83309
6. LOCAL DIMMING To LED DRIVER AR7600 33 1 16W LOCAL DIM L Mcs R7606 t I emm emm emm emm emm em emm em emm emm emm emm emm emm emm emm emm emm emm emm emm emm em em em THE ZN SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION A SECRET LG ELECTRONS MODEL DATE THE CRITICAL COMPONENTS IN THE A SYMBOL MARK OF THE SCHEMETIC LGElectronics Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes BLOCK seco 59996 SHEET eMMC I F EMMC DATA LINE 47K EMMC_DATA 0 7 A4 B2 B3 84 85 ARB101 B6 22 1 16 M6 M5 AT6L DAT3L D D LK BAI EMMC CMD B Don t Connect Power At VDDI Just Interal LDO Capacitor THE ZN 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 THE CRITICAL COMPONENTS IN THE A SYMBOL MARK OF THE SCHEMETIC Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes S
7. 8408 E LAN ACT3 15213121 z a o 5 EPHY RDP It kd ETNRUB_EPHY_TXOP3 LAN2 HUB 2 S cs 5 N N 68412 TROP I e lETNHUB EPHY TXOP2 EA E LAN LINK0 0 1uF RE EM q E vd 0 1uF R8 S 1 AN2 HUB 4 lc ag 2 AN2_ LD8400 v F 08420 R8412 404 We 49 9 RTL 10640 WOL 1 LAN2_HuB R8428 R8430 ES EPHY_RDN II e ETNHUB EPHY TXON3 330 330 c8413 TRON J ETNHUB_EPAY_TXON2 4 E ETNHUB_DVDD33 0 1uF E LAN_LINKo O x E LAN ACTO DS EPHY ETNHUB EPHY RXIP3 o EPHY TDP gt EPAYI EPHY_LINK us 4 TRIPI ETNHUB EPHY RXIP2 READS EPHY_ACTIVITY gt 49 9 1 i 49 Eug ANZ_HUB ETHERNET MDC ic de R8429 ETHERNET moro O R8414 Et 330 49 9 68447 18 SOAM EPAY_TDNL It ETNBUB EPHY RXINS LANA au SOC 68415 zm T STNAUS_SPAY_RXINZ 0 1uF 68445 D 1uF ANZ HUB Place close to chip Place to center tion between two chips 0 asias DNI Place to center position between two chip TEE JA 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 SCHEMETIC LGElectronics MODEL DATE SEL ELECTRONICS BLOCK ss SHEET Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes EXT_SPK OP AMP OP_AMP_BCD
8. Copyright 2012 LG Electronics Inc All rights reserved 25 Only for training and service purposes LGE Internal Use Only BLOCK DIAGRAM Jexyeeds Ee rm rr rm rm rm rm rm rm rm pm rm rm rm rm rm Jeoy 1n0 sidds 31005 1exeedg yx 20019 HSA Yds 3x3 10091 umd 73 0 i oipny Od O Oe 24 aH doe BE Lv cv Le Naas no oipny 9 INOA_ INW ALLG 83 oipny EGRET 0000000 LNW 11606 ny NI 18166 SL jeuieu3 4 LNO 19186 SL eroJawuwog 13 LNO I lleIed 19 NI leijejed IO cL c391 uoWWOD 19 Se SOA dicis us Ald F I 1 1 Pa to Vou 1 In UI 1 1 1 1 ty ty 1 1 1 1 Pa pa 1 Pa Pa a va 1 1 Pa 1 1 Va Pa zk Pa Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes TOM9EO Y INOOIIN 01 TOMABEN nis PUR gt Em casn Imm LGE Internal Use Only 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 nat modify the original design without permission of manufacturer
9. MODEL ov DATE mm 1 6 ELECTRONICS BLOCK TSHEET Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes THE ZN 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 THE CRITICAL COMPONENTS IN THE A SYMBOL MARK OF THE SCHEMETIC Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes SECRET LGElectronics ZigBee Radio Pulse M_REMOTE OPTION swore AR4800 64800 100 a ono 0 1uF 1 16W SC e T MLREMOTE_RX TX M_REMOTE_TX s RESET M REModule RESET 9 M RFM ule I DD 3D SYNC R os M REMOTE D em 3D_SYNC_RE OO coo Oo remore rx ALL M_REMOTE OPTION Lo ELECTRONICS Set Leet A A A Deeg d MODEL DATE BERT esos SHEET LGE Internal Use Only From SOC R5421 R5422 DUAL COMPONENT 3 3V_NORMAL H G A 01801 1ST OTRIY80001A 2N
10. acc s PLACE AT sree o0 17 10 6449 04 sc use 1460 E een S _CVBS_IN 15K R61 RG T ROUT SCART_Rout 212 opt io T 15K R619 33 SCART_LouUT_socL gt SCART_Lout opt 623 100K READY FOR FILTER EMI 6610 i Tour Ch TEN T DE 30 0 2601 4708 opt SS C611 Tour lev 24 _R_IN i I SC R IN soC 2626 ET 1 168 2602 30K PER 100 OPT 1 N 7 READY FOR FILTER EMI I R60 i 8616 Reis S b S DTV MNT V OUT SOC Si ER C600 6617 DTV MNT V OUT is 22006 22065 Kao iras Debat IT ee Ne L en wel 19_cves Or co E THE ZN 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 THE CRITICAL COMPONENTS IN THE A SYMBOL MARK OF THE SCHEMETIC Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes SECRET LGElectronics Lo ELECTRONICS MODEL DATE BERT SHEET LGE Internal Use Only 10703 H5TO2G63BFR PBC IC701 H5TO2G63BFR PBC D Hee i Hi ES Hi IC105 LGE2112 Ib I Mt ho er 1 10704
11. ETNHUB GXFULL R9044 510 GYsPD GXFULL gt D9002 30v D9000 30v Ethernet Block HUB2PHY_TXEN PHY2HUB REP CLK MCU PORT TO BE ASSIGNED NET RESET AE TO MCU PHY_STATE Si TO MTK pin no Status LAN2_DET Eas Input HuB LAN_LINK3 LAN2_DET Connected Low High Not Connected High Low LAN2_DET Y Lo ELECTRONICS 1 16 5 for EMI R9060 1 1 16 5 for EMI R9061 10 ANN 1 16 5 for EMI ES A LAN2 Detect ETNHUB_DVDD33 TO soc 09002 MMBT3904 NXP LAN_LIN LAN 2 RJ 45 TROP Plz Check OPT component N_LAN2_HUB R9047 o ETNHUB_AVDD18 A M18PG1215N1D LAN2_HUB BLI 43 10013AD11 1 ETNHUB_EPHY_TXOP1 1 TRON R9059 ANP_HUB ETNHUB_EPHY_TXON1 TRIP ETNHUB EPHY RXIP1 1 TRIN ETNHUB EPHY RXIN1 05 1 D E D9009 LAN DVDD33 R9045 510 LAN ACTIVE Y R9055 LAN ACT3 LAN2_HUB LAN_LINK_G R9056 AAA 0 LAN_LINK3 DO 2 LAN2_HUB MODEL DATE BLOCK tenernos em SHEET os LGE Internal Use Only Vout 1 R1 R2 0 765 5 03V
12. DTV MNT_L_OUT IC8602 AS324MTR E1 CLOSE TO MTK v es ee EE e eg ev J Be CLOSE TO MTK our ECH B RUE ne E a de e ces E opt d cn i 50632 33 E aa I 8821 58636 3 AL iE m 066 3862 xi sees 28619 I z we 390 NON INV IN1 COENA wf RH ceesb sage S SCART_Lowt i 2 8629 i ES i EXT SPK 1UT MAIN 8626 won zm mnz _ N RT_AMP SCART_Rout EXT_SPK_ROUT_MAIN Inv mm 60631 33K 28627 98618 poe 35854 I 20624 Ti I pra S JE 61 3pF S L ee Se Se elu 2 2K EXT_AMP_R_IN EXT SPK AMP ExT SPK OUT I IC8601 I TPA6011A4PWPRG4 I I Geck I N EXT SPK by L ror I I EXT PK o RETO a e e EXT SPK R I e PVDD_ i e e EXT SPK R AIE EXT SPK L ExT AMOR INI T 88608 L LEES I EUNTEM 4 7K I 68613 R8618 14 R8620 Cees R8607 39pr 470 F 4368 39pF n 7_TERMINAL e e 10 8613 vbp 100 R861 LIN 08601 des AMBT3904 NXP m RB609 ie LLINEIN 100 5K npes LD EXT seke tor ET I I 10V I Connected Disconnected SS I mm Z I I WE I N LOUT EXT_SPK_L e I I THE ZN SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PR
13. e i North Latin America http aic lgservice com N Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Life s Good LED LCD TV CHASSIS LD2FF MODEL 47LT760H 47LT760H ZA CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL i P NO MFL67659804 1210 REVOO Printed in Korea CONTENTS CONTENTS cose iaa 2 SAFETY PRECAUTIONS eegene eebe eege oes ekg ggn ds A SERVICING PRECAUTIONS sss ee e eee esse ennenen d SPECIFICATION E X 6 ADJUSTMENT INSTRUCTION acutae erae eonun ennenen 9 TROUBLESHOOTING GUIDE 1 rara a cuo uae tu annuae ru iii 17 BLOCK DIAGRAM concreto 26 EXPLODED VIEW ener nee neni reer eee is 27 SCHEMATIC CIRCUIT DIAGRAM sees eect ee eene nennen Copyright 2012 LG Electronics Inc All rights reserved De 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 AN 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 manufacturer General Guidance An i
14. 0x00 02 03 26 F1 4E 10 9F 04 13 05 14 03 02 12 20 21 0x01 22 15 01 26 15 07 50 09 57 07 O 0x02 O E3 05 00 00 00 1D 80 18 71 1C 16 20 58 2C 0x03 25 00 AO 5A 00 00 00 9E 01 1D 00 80 51 DO 1A 20 0x04 6E 88 55 00 AO 5A 00 00 00 1A 02 3A 80 18 71 38 0x05 2D 40 58 2C 45 00 AO 5A 00 00 00 1E 66 21 50 BO 0x06 51 00 1B 30 40 70 36 00 AO SA 00 00 00 1E 00 00 0x07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 92 RGB EDID 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 OxOA OxOB OxOC OxOD OxOE OXOF 0x00 00 FF FF FF FF FF FF 00 1E 6D 8 b 0x01 01 03 68 AO 5A 78 OA EE 91 A3 54 4C 99 26 0x02 OF 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80 0x03 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 20 0x04 45 00 AO 5A 00 00 00 1E 66 21 50 BO 51 00 1B 30 0x05 40 70 36 00 AO 5A 00 00 00 1E 00 00 00 FD 00 3A 0x06 3E 1E 53 10 00 0A 20 20 20 20 20 20 5 0x07 0 00 3 24 LGE Internal Use Only Reference 4 2 3 Equ
15. 100 R3343 0 IR OUT HDMI3 CT CEC_REMOTE T O CK _HDM14_JACK DETECT R3328 100 R3329 100 3342 o SHIELD Lesen I r259 HDMI4 JACK ix Lesen x D14 HDMI3 ck k D2 HDMI3 JAC S gt pat uou cK SHIELD D24 HDMI3 JACK DIE UI HDMIZ S UT z HDMI3 Ce 5V_HDMI_2_JACK 03302 R3313 gt are MOET 3904 NXP ENEE R3314 100 i R331 100 R3300 CEC_REMOTE CK _HDMI2_JACK R4341 0 L IR_OUT_HDMI1 CK _HDMI2_JACK L HDMI ARC DO _HDMI2_JACK R3300 MTK Recommend O Ohm DO _HDMI2_JACK DATAQ D1 _HDMI2_JACK DATAl DATA SHIELD DATA1 DATA2 DATA2 SHIELD D2 _HDMI2_JACK DATA2 UI HADMIT THE ZN 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 A SYMBOL MARK OF THE SCHEMETIC LGElectronics Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes zm zm zs HPD SWITCH HPD CTL
16. 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 from 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 appropriate 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 i
17. is pressed 216 Gray internal pattern will be displayed 4 One of R Gain G Gain B Gain should be fixed at 192 and the rest will be lowered to meet the desired value 5 Adj is performed in COOL MEDIUM WARM 3 modes of color temperature f internal pattern is not available use RF input In EZ Adj menu 6 White Balance you can select one of 2 Test pattern ON OFF Default is inner ON By selecting OFF 9 2 LGE Internal Use Only Check P2401 All Voltage Level 3 5V 12V 24V eg Check Q2407 output Voltage 12V Y Check LVDS Cable yr Check LCD Module Control board TROUBLESHOOTING GUIDE 1 Power Up Boot Fail Trouble Shooting guide N gt Check power connector and RL ON signal OK Replace Power Board Check Q2407 application circuit Or replace Q2407 Replace Cable 2 No OSD Trouble Shooting guide Replace Power Board N Check P2401 All Check power connector and Voltage Level 3 5V 12V 24V RL ON signal OK y N Check IC8700 RESET pin Check switch SW8700 Lx N Check X8701 Clock Check X8701 application circuit 10MHz or Replace X8701 Y N Check IC8700 IIC Check IIC line or replace Communication sta
18. 1 2 3 4 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 3 5 Model name amp Serial number Download 3 5 1 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 by use RS 232 Must check the serial number at Instart menu 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 3 5 2 Method amp notice 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 It is impossible to download by bar code scan so lt need Manual download 1 Press the Instart key of Adjustment remote control 2 Go to the menu 7 Model Number D L like below photo 3 Input the Factory model name ex 42LT760H ZA or Serial number like photo IN START Model Number D L R SKJY1107 4 Check the model name Instart menu Factory name displayed ex 42LT760H ZA 5 Check the Diagnostics DTV country only Buyer model displayed ex 42LT760H ZA 3 6 Cl Key checking method Check the Section 3 2 Check whether the key was downl
19. 1 5 1 1 Equipment amp Condition HDMI Cable for 1 4 version Jig Speaker out JIG or Oscilloscope Power only mode 4 5 2 Test method 1 Insert the HDMI Cable to the HDMI ARC port from the 5 1 2 Check the speaker out master equipment HDMI1 1 Connect the External Speaker check the sound Connect oscilloscope you can see this waveform Recommended Input signal RF 1KHz Sing wave Copyright O 2012 LG Electronics Inc All rights reserved 14 LGE Internal Use Only Only for training and service purposes 5 2 IR Out and DC Power Outlet 12V 1 Equipment amp Condition Jig commercial check JIG Special 232C Cable for commercial check Jig Power only mode PCB mode instart menu gt menu gt Configuration Setup gt RS232 DC Power Outlet 2 Check the power out amp IR out commercial check jig 1 Connect each other RS232c port on the Commercial Check JIG 2 Press RED Color Button on SVC Remote control in power only mode or PCB mode 3 Check the LED of jig board 12V LED OK condition Turn On IR LED OK condition blinking 12V Power Outlet IR Out 2LED ON 7 LED blinking 3 Check the power out amp IR out mini jig 1 Connect mini jig on RS232c port 2 Press RED Color Button on SVC Remote control in power only mode or PCB mode 3 Check the LED of mini jig Function Judgement 12V Power Outlet TR Out 2LED ON 7 LED blinking LED F
20. 3 5 D 7 Time 113451 sa T IBR coms 115200098 ES DEES Barcode NONE OK CERT 1110312201 00000209 PAK Owen Shipping Meer Foot gegen Option Opton2 Opboni Opbon ge Opbon6 _Optian f Option hock me 929 e7 12602 23071 1321 T option e TGommercial Tool Option 7 LPT Connection OKILPTI 00391 En Play Start 3 2 6 Inspection In INSTART menu check these keys LGE Internal Use Only 3 3 LAN Inspection 3 3 1 Equipment amp Condition Each other connection to LAN Port of IP Hub and Jig 9 IP 192 168 123 254 3 3 2 LAN inspection solution LAN Port connection with PCB Network setting at MENU Mode of TV Instart gt menu gt Network Setup x Setting automatic IP Setting state confirmation H automatic setting is finished you confirm IP and MAC Address PCBA JIG Ready 3 4 LAN PORT INSPECTION PING TEST 3 4 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 Connect SET gt LAN port PC gt LAN Port SET PC 2 LAN PORT inspection PING TEST Play the LAN Port Test Program 3 4 2 Connect each other LAN Port Jack Play Test F9 button and confirm OK Message Remove LAN cable e PingTest D S355 U DD A EL am mm 4
21. 3 Checkpoint 1 Test voltage GND 1 5KV min at 100mA SIGNAL 3KV min at 100mA 2 TEST time 1 second 3 TEST POINT GND Test POWER CORD GND and SIGNAL CABLE GND Hi pot Test POWER CORD GND and LIVE amp NEUTRAL 4 LEAKAGE CURRENT At 0 5 mArms LGE Internal Use Only 8 USB S W Download Service only 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 work But your downloaded version is High USB data is automatically detecting Download Version High amp Power only mode Set is automatically Download 3 Show the message Copying files from memory AA TV Software Upgrade Expert Copy the file from the Memory Do not remove the USB from the port Do not unplug 4 Updating is starting id TV Software Upgrade E TV Software Upgrade COMPLETED senem APA UPGRADING IT 33 Do not unplug The TV will restart automatically in seconds 5 Updating Completed The TV will restart automatically 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 After downloading have to adjust Tool Option again 1
22. 4 0 1uF SOC gt Pro Idiom or CI SLOT 16v I2C_1 AMP L DIMMING HDCP KEY t I2C I2C_2 T CON I2C_3 MICOM I2C_4 S Demod T2 Demod LNB 12C_5 NVRAM 3 I2C_6 TUNER_MOPLL T C ATV e e e e e D D e e R131 R1349 R139 R1429 R173 R188 R156 Nie RTT T TS 2 7K2 2 7K 7K 2 7 Kee R1026 o Eia 3 3 3 NORMAL gt M_REG EEN i ds i 1 wt5369 75 SYNC E 3 TRE CTRL 11 D R1028 JPCM_W z 2500 Sg RIO gt PcM WE OPCTRL 1 e SEENEN PCM RS TCLK_SEL 3 c T El z lt wr5369 78 gt R116 3 _NORMAL R10 o gt TS_S_OUT_CLK C 3 ci A vsi R11 i e R100 o ci soc R118 3 e R10 o R121 3 e R1001 o 3 3 3V NORMAL R123 33 e MT5369 MCLKI C MT5369 X R168 6 4 7K K AU12 oPT UDIN Tm m 4 DIM2 PWM_DIM1 AR12 R169 10K A_DIM OPT A37 MT5369 TS IN 0 gt SD Do 35 M15369 TS 1N 1 gt Sp Di gt ase Model Option EECH He 5 3 B35 CI SLOT soc MT5369 TS IN 3 T2 5p 53 ee Ie B37 e a e gt 5 gt 2 E amp A 6 gt S a a El E g S 5 B NO FRC internal LG FRC2 ved MT5369 TS IN 7 C ma x a A o m H FRC k d LDM CS 2 Zan BOXS ox DI des soxb Dax E eS favni E EE Amr Je gar ia Oar m MODEL 1 LDM DO L DIMO E is Si al SR m Se Sr 0 H R1010 e E R10 BEE Az ES EST axes x 1 100 A Y ERES E E Y SS Kes WARM MODE gt LDM O L p1M0 vs e E 1 E 5 E MODEL OPT 1 o o 1 m AMO a E x x x E d 2 9 LDM_DO C L DIM0 M E E B E x us AP10 x x E E E USB S s MODEL C 6123 0122 o 1u
23. 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 SCHEMETIC LGElectronics MODEL DALE 16 ELECTRONICS BLOCK 9 SHEET Z Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes IC105 LGE2112 To NEC amp HDMI M E Ir t E i ARK OF THIS SCHEMETIC DIAGRAM INC ON ECTION FROM X WHEN SERVICING IF IS RTS BE USED FOR MARK OF THE SCHEMETIC Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes 00000000 00000060 0000000 SECRET LGBlectronics IC105 CHANGE SYMBOL LG ELECTRONICS f PLACE AT JACK SIDE I C Ee I LEN J m me yl T i i E I 1 m a i TUE I EE Mex ag NR rt oh Ae c C333 C334 MTK R end 10 pF MODEL DATE BLOCK s SHEET 7 LGE Internal Use Only 3 3V_NORMAL VDD3V3 60mA C503 um e 0504 BLM18PG121SN1D 10uF ILE VDD3V3 L BLM18 POWER_ON O
24. H5TO2G63BFR PBC SERVICING IF IS RTS BE USED FOR MODEL DATE 1 6 ELECTRONICS BLOCK SHEET Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes CI TS INPUT Close to MT5369 MT AR902 C1 MDI 0 7 7 MT5369 TS OUT O 1 MDI 0 MT5369 TS OUT 1 MDI 1 MT5369 TS OUT 2 MDI 2 CI MDI 3 CI MDI 4 LMDI T AR903 Des TS VAL Close to MT5369 CI TS OUTPUT MT5369 TS IN 0 7 TS INIO 26900 47 Close to CI Slot CI_IN_TS_CLK to CI Slot CI_TS_DATA O 7 INTIT TS_INTZI YS TTT TS_IN 4 INT5T INTET SEN Close to CI Slot MT5369_TS_CLK e ROI5 47 e R916 47 MT5369 TS VA MT5369 TS R91 47 Close to MT5369 THE ZN 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 THE CRITICAL COMPONENTS IN THE A SYMBOL MARK OF THE S
25. I I I I I I I I SMD GASKET 5 0T l0 Sg LAASVD OrcOLte UN Tx Z LN Il0 S LIMSVD I 6W Il0 S I3MSVD Tx 8W L0 G LAASVD 9 W I LW L0 SG IS3MSV5 I 9W l0 Sg LIASVO n T SH LO S LIASVO Ix FW l0 Sg L33Sv5 Ix W 10 S Lausvo Ix W Lee LINSVD 9x b UN Lee L3MSV5 9x E IN 496 LIASVD LL8 9S CW 9x Z TN Jore LIASVD 9 TIW Jore LIASVD OLLL88L9S QN Lee LIS3NSV5 OLLLS8819SUN 9x SW Lee I3MSV9 OLLLS819SUN 9x VW Lee LIMSVD OLLL88L UN Lee LIMSVD OLLL880L9SON 9 TW SMD GASKET 9 5T 3 I I I Lee LIASVO Cx VUN Lee L33SV9 ZKLN Lee LIASVD Zv LN Lee L33SV9 vVOCOLICISON Lee LIASVD vVOCOLICISON Lee I3NSV5 FUZUL LZ UW x 8W Lee LIMSVD 7000116 ON C x LW Lee I3MSVD vOcO 9S UN Tr 9N Lee LIASVO 060 COS AW Z SW Lee L3MSV9 Tx EN Lee L33SV9 TZ MN Lee LIASVD vVOCOLICISON SMD GASKET 5 5T Zx TW en oi eas a a emm emm emm emm emm emm D D emm SP GE emm SP SP D emm SP emm SP SP SP SP SP D emm emm iu emm emm emm emm emm emm emm emm emm emm emm emm emm emm emm emm emm emm emm emm emm emm emm emm emm emm emm emm a emm a IS 9 ISNSV5D 15 9 LIMSVD JEOLTE9IS OM IS 9 LIMSVD 060116 ON x OTW 1IS 9 LIASVO ap ED A A D EP GE GE D GE A
26. PHY2PRXD3 gt B MP20045DQ LF Z a os jaa SEL ta 3 end Ie S6 lau SZ ZT Ta 8 gt B gt B_RXD Ag Se 8 EP GND so lalalala ENEE 233 foso EG EE PHY2HUB RXDI REALTEK WOL E a lalo pla alos Ie C xxx x H x Te ea near PHY2HUB RXDO EN AUTOXOVER L 68407 KEIIEBEE HIE g DEEG BIG MESSE DIE EES KR VIN_1 len 10K al aly UM ajajaja alalafa BE ola LAN ACTO 1 8 la Slale ela ala NENE dag HES 2 ajal ja aja aja a o ES GXSPD R8408 VIN 2 Zo _ pes 100K 8 Place Closed GYspD 5 LED ACT 2 P4ANEG AN2_HUB GXFULL o gt ED sep 21 GXANEG gt voutat N iaa ETNHUB DVDD18 ETNHUB AVDD18 LAN LIN Penin itan nna GYPULL LED DUP 2 AUTO_NE x me ns405 DVDD33 3 Drol S E E s EE 10r Sin D 1 GXSPD1 RshV Sa 82 GYSPD oe 1 6XFULL 3 3 ii R8406 SE L DUP 1 GYFU i 2K GYFULL ED DU Se BULB 3 P4IRTAG L 7 AUTO ERPORU Place Close To RTL8306 one E LED ADI 0 ENFORWARD 2 P4IRTAG O o Ca tal RxD 11 LEDMODE 11 HUB2PHY_TXD1 amp LAN_ACTO LED AQT 0 BCINDRO IM R TXDIO PRXD O LEDMODE O HUB2P TXDO ri PD 0 MAX1536 DD18 e C8441 1 DUP 0 p E HUB2PHY_TXEN 2765 CK25MOUT rxc PRxc cThL REFCLK e PHY2PRXDV Broadcast strom control enable disable xr GND 2 REAP RA PHY2PRXD3 Backpressure enable disable xtal_matcning HVDD33 P4LNKS Lanz gH ANZ RUB ENDEFER NOT USED Defer enable disable dei AVDD18 11 P ADUPSTA ROM EN AUTOXOVER Auto cross over enable disab
27. RGB PC Audio in Trouble Shooting guide Check input signal format Is it supported IE Check AC cable for damage For damage or open conductor y Check JK4AGOONKSGOA Replace JK4600 JK3604 Can you see the normal waveform y Check the input of MTK IC105 Measure waveform at C610 C611 C319 C320 because it s more easy to check Can you see the normal waveform IR Check Audio AMP output L5402 Replace L5402 L5403 L5404 15403 L5404 L5405 L5405 La This board has big problem because Main chip MTK have some troubles After checking thoroughly all path once again You should decide to replace MTK or not Copyright 2012 LG Electronics Inc All rights reserved 24 LGE Internal Use Only Only for training and service purposes 10 HDMI Audio in Trouble Shooting guide Check input signal format Is it supported IE Check AC cable for damage For damage or open conductor y Check JK3301 JK3302 JK3303 Can you see the normal waveform E Replace JK3301 JK3302 JK3303 Check Audio AMP output L5402 L5403 L5404 L5405 yr Replace L5402 L5403 L5404 15405 This board has big problem because Main chip MTK have some troubles After checking thoroughly all path once again You should decide to replace MTK or not
28. Y ADDRESS DI HuB DAN DVUDSS PHY2HUB CRSDV R9038 ETHERNET_M TER DVDD10 SEH oot L our Tm 160 16 ET e OPT 69008 10pF 50V I NON Place close at RTL8201FN IC9000 aue f roor o NON_ LAN2_HUB R9020 o R9066 4 7K v 4 NON LAN2 HUB THE ZN 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 THE CRITICAL COMPONENTS IN THE A SYMBOL MARK OF THE SCHEMETIC Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes SECRET LGElectronics side PHY2HUB PHYZHU TO Ethernet NON LED L JK9001 BS R4 AN 1 61 9 9 MTK pin no Status LAN1_DET A37 Input GXFULL LAN1_DET Connected Low High Not Connected High Low LED LAN OLD EMI FAIL LED LAN NEW EMI BETTER NON LED LAN EMI PASS LAN 1 EXT AUX RJ45 ETNHUB_AVDD18 A M18PG1215N1D BL 43 10013AD11 1 ETNHUB_EPHY_TXOPO R9039 49 9 1 R9040 49 9 15 1 See 0 fame ETNHUB_EPHY_TXONO ETNHUB EPHY RXIPOL ETNHUB EPHY RXINOL a LANI Detect
29. 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 to the customer Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 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 CONDUIT etc To Instrument s O G 0 15 uF exposed METALLIC PARTS a ee NM 1 5 Kohm 10W When 25A is impressed between Earth and 2nd Ground for 1 second Resistance must be less than 0 1 Q Base on Adjustment standard LGE Internal Use Only SERVICIN
30. close to IC LG1001 Use XMARK LGDT1129 Not use XMARK 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 SCHEMETIC LGElectronics LG ELECTRONICS MODEL DATE BLOCK SHEET Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes 5 LG Life s Good
31. to compensate RGB deviation 3 1 2 Equipment amp Condition 1 USB to RS 232C Jig 2 MSPG 925 Series Pattern Generator MSPG 925FA pattern 65 Resolution 1080P Comp1 1920 1080 RGB Pattern Horizontal 10096 Color Bar Pattern Pattern level 0 7 0 1 Vp p Image Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 3 1 3 Adjustment method 1 Adjustment method Don t need to adjust ADC because there is data in OTP and adjusted initially 3 2 MAC address D L Cl D L 3 2 1 Equipment amp Condition 1 Play file keydownload exe 3 2 2 Communication Port connection 1 Key Write Com 1 2 3 4 and 115200 Baudrate 2 Barcode Com 1 2 3 4 and 9600 Baudrate 3 2 3 Download process 1 Select the download items 2 Mode check Online Only 3 Check the test process DETECT gt MAC gt Cl 4 Play START 5 Check of result Ready Test OK or NG 6 Printer Out MAC Address Label 3 2 4 Communication Port connection Connect PCBA Jig RS 232C Port PC RS 232C Port PCBA RS 232C cable 5 Jig for DA n Setup Program V EES ea nones Personal Computer 3 2 5 Download Test informadon T JSt 4PCNoI Total 7 ood NG a 7 Product information 7 LG Electronics Progam VER 1 00 H Data File CXALS Key 10101 30ATA001 11216 csv FACTOF MODE 112Y_MTK_MAC_CI Ley Unt 00 ey TERS RESULT 1 Jeer 2 MAC WRITE
32. 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 C Symbolrate 4 0Msymbols s to 7 2Msymbols s Modulation 16QAM 64 QAM 128 QAM and 256 QAM Copyright 2012 LG Electronics Inc All rights reserved 6 Only for training and service purposes LGE Internal Use Only No Item Specification Remarks Scart jack is Full scart and support 4 ScartInput 1EA PAL SECAM ATV DTV Out not support MNT Out 5 RS 232C SVC Control Power outlet Selectable 12V 1A or 5V 2A 6 RGB Input 1EA RGB PC Analog D SUB 15PIN HDMI1 DTV 7 HDMI Input 3EA HDMI2 DTV Gute G BEE NSISISE OM HDMI3 DTV 8 Audio Input 1EA RGB DVI Audio L R Input 9 SPDIF out 1EA SPDIF out 10 USB 2EA Unica JPEG MP3 DivX HD 11 Ethernet Connect 2EA Ethernet Connect WOL Support 12 Cl Slot 1EA Cl EU PPV CH Support 13 Clock LED Clock LED Clock Display 14 Ext Speaker out 1EA Ext Speaker out Stereo 1W 80 Variable Ext Volume control 1EA Ext volume control 5 RGB input PC No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remark 1 720 400 31 468 70 08 28 321 For only DOS mode 2 640 480 31 469 59 94 25 17 VESA ro M dd eiri hea 3 800 600 37 879 60 31 40 00 VESA 4 1024 768 48 363 60 00 65 00 VESA XGA 5 1360 768 4
33. 7 72 59 8 84 75 WXGA 6 1920 1080 66 587 59 93 138 625 WUXGA FHD model Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only 6 HDMI Input 6 1 DTV mode No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Proposed 1 720 480 31 469 31 5 59 94 60 27 00 27 03 SDTV 480P 2 720 576 31 25 50 54 SDTV 576P 3 1280 720 37 500 50 74 25 HDTV 720P 4 1280 720 44 96 45 59 94 60 74 17 74 25 HDTV 720P 5 1920 1080 33 72 33 75 59 94 60 74 17 74 25 HDTV 10801 6 1920 1080 28 125 50 00 74 25 HDTV 10801 7 1920 1080 26 97 27 231 97 24 74 17 74 25 HDTV 1080P FHD model 8 1920 1080 33 716 33 75 29 976 30 00 74 25 HDTV 1080P FHD model 9 1920 1080 56 250 50 148 5 HDTV 1080P FHD model 10 1920 1080 67 43 67 5 59 94 60 148 35 148 50 HDTV 1080P FHD model 6 2 PC mode No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Proposed 1 720 400 31 468 70 08 28 321 HDCP 2 640 480 31 469 59 94 25 17 VESA HDCP 3 800 600 37 879 60 31 40 00 VESA HDCP 4 1024 768 48 363 60 00 65 00 VESA XGA HDCP 5 1360 768 47 72 59 8 84 75 WXGA HDCP 6 1280 1024 63 595 60 0 108 875 SXGA HDCP FHD model 7 1920 1080 67 5 60 00 138 625 WUXGA HDCP FHD model Copyright 2012 LG Electronics Inc All rights reserved 8 LGE
34. 9 30k IR OUT CTRL e 5V_S A R4142 10K R4141 IR_OUT_HDMI3 id R4144 10K 04107 28c3052 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 N SYMBOL MARK OF THE SCHEMETIC LGElectronics LG ELECTRONICS MODEL DATE BEDEK ra SHEET Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes I I I 1 E 1 1 USB WIFI CG x i m 1 I I I e lcm I 5V_USB FOR USB i i M I I I I I I 12V i I i 1 EE E dc dE il ye 1 e 1 E d I I Si I 1 l 2 i 1 em nais L d ro a eee a ale d i TRU is I 104304 I I i I 1 TUSB3410RHBR i I 4A I renore x I i I i I i gt M ReMOTE 2 I I M_REMOTE_RX i I I Penne E T sii LS I I I toi I 1 Ms TE 1 1 d i 1 TE E 1 1 o4 i dees I i I i ee I I I Vout 0 763 0 0017 Vout set 1 R1 R2 4 98v I EE EE EES USB2 D a A A D D D D D D D D D D D D D D
35. A A A ED D ED A ED A ED D ED ED A P D P a ke SMD GASKET 6 5T 1 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I LS THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION LLI kE Cr O 5 S a X X LLI C Ll 2011 02 09 SECRET WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR FILRE AND ELECTRICAL SHOCK HAZARDS LG ELECTRONICS I LLI LLI L LI BLOCK Y 2 Cc O A O H LLI ET SMD GASK THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC LGE Internal Use Only Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes 3 5V_ST_LAN 99000 A034 R9002 470K R9064 o wot ON ETHERNET_PWR_ON OFF BLM1 LAN DVDD33 Xtal Old Xtal matching eH 25 OMH z x9000 BAY AD CONFIG PH RXER FXEN LAN_AVDD33 THERMAL 49 IC9000 RTL8201FN RXD 3 CLK RMII MODE LAN_DVDD3 LAN_DVDD33 TO Ethernet MDC R9013 PHYRSTB ETHERNET M LED LAN NEW JK9000 LED LAN NEW DRI uj SS CONFI
36. AX Close to the tuner Close to the tuner 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 em em em em em em em em em em em em as em e e em em Gum om a aaa a a em a om a em em em em em om om em em om em em em emm em a em THE ZN SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION Horde uc Rp SECRET Lc ELECTRONICS MODEL DATE THE CRITICAL COMPONENTS IN THE A SYMBOL MARK OF THE SCHEMETIC LGElectronics Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes BUER ee SHEET TS se E a SE SE So SB E E E SE SS SEE SE SEO E E a SE So E EES EN LVDS 1S BF J R1500 51Pin LVDS OUTPUT Connector 30Pin LVDS OUTPUT Connector RACLKN ON RACLKP mcm cm om eem gem amc posos a BIT_SEL P L SC 3 3K L an a a m m m e sdl THE ZN SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION A SECRET LG ELECTRONS MODEL DATE THE CRITICAL COMPONENTS IN THE A SYMBOL MARK OF THE SCHEMETIC LGElectronics Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes BLOCK tosco SHEET
37. C TX Y R8703 R87016 0 KRY 1xgy2 NORMAL 100 LG ELELTRONILS MTK_NEC_RX 03 R87011 10 R87012 10 E COMMON 1C8704 SC632ULTRT EP GND em c2 1 E E EX iud Si cot 5 9097 Uh 8 g E ci our 3 6 IN N HA a 2758 5 BLM18PG600SN1D 8705 Le R8704 10K 5V_ON OFF P8700 12507WR 12L MODEL DATE BLOCK T ES LGE Internal Use Only SMD GASKET SSS 4 Lei L3MSV9 SOCOTIC9SAN v DIW lG L LIASVD IJCOLLICISOM Tr 9N LS IS33SV5 770707770 V SW lG L IS33SV5 S0cO0LLC9SQUN IS L Laysvod feU L LZ UW V tW IS L I3MSVO OcOTTC UN bx zH L ILJASY9 COLLES S ON SMD GASKET 7 5T be TH Lkb is 2 2 A Eg lG V LIIASVD DIN IS v LIMSVO 80060116 ON 0 EIN lG V LIAASVD DM JLerp LINSVO 80c0 9S CIN LW IS b LIASVO 9N LG y LIASVD eo SMD GASKET 4 5T Iert Layswo I I I I I I I I I p EE Eg I I j I I I I I I SMD GASKET 8 5T Leg IS33SV5 60c0LLCc9SUN Sx E IN Leg IS33SV5 AT Sx Z LN Leg LIMSVD S 9W Leg LIASVD 95 UN 15 8 I33S9V5 AT Sx W Leg LS V5 60c0LLCc9SUN Sx TH ENS r I
38. CHEMETIC Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGElectronics CI DETECT 3 3V_NORMAL R910 R914 10K 10K 3 3V_NORMAL PCM WAIT PCM INPACK 61 cr ALD DATA 0 7 AR904 0 AR905 0 A_ADDR 0 14 _ADDR 0 CI DATA 0 7 DR 0 14 ix R906 R919 gt R923 J R924 PCM REG CI ADDRTIT 10K ar Z Los S OPT ign TOK ADD CI ADDRIZI PCM CE2 3 CI ADDR 3 PCM IRQA E amp o CI ADDRIA ADDR 5 ADDRI6 CI ADDR 6 PCM_RST 7 CI_ADDRT7 PCM_IORD ee CI ADDR S E CI ADDR 9 cr s1 CI ADDR 10 CI ADDR IIT WE L ADDRII2 AR90S o CI ADDR 12 R932 22 N PCM CEI mam TS SEA aa RTI3 CI ADDRII3T OPT RTT CI ADDRII4 A_DATA 0 7 i O ECH cgi 4 5 6 3 22 R911 22 PCM_IORD 492 T PCM CE2 CI A ADDR 10 PCM IOWR CI VSl CI A ADDR 11 cr MbI 0 7 CI A ADDR 9 Jcr 8 CI MDI O GE 13 R9 2 CI_MDI 1 j 241 2 C ecu o _MDI 2 ei 14 R942 22 i a PCM WE CI MDI 3 PCM IRQA R938 0 OPT CI_MDI 4 CI_MDI 5 CI_MDI 6 CI A 12 CI MDI T7 CI A 7 CI TS CLK 07 61 R921 AA 22 PCM RST L CI j 5 R922 PCM WAIT Jer 41 dee es 8920 22 OPT PCM A REG CI j DDR 2 61 j DDR 1 CI A ADDR 0 DATA O 1 v CI_TS_DATA 1 2 DATA 2 8937 105 li
39. CONNECTION urm CTL L BO A NEC HPD H Bi s A MTK_HPD p om em em om om om em em HDMI HPD 2 JACK MTK_HPD a LG ELECTRONICS 5V_HDMI_3_JACK 5V_NORMAL _SCL_3_JACK _SDA_3_JACK 5V_HDMI_2_JACK 5V_NORMAL 5V_HDMI_4_JACK 5V_NORMAL a L MMBD610 D3301 32 R3326 47K SAIK LA ppc sCL 2 JACK _SCL_4_JACK LA ppc_spa_2_gack D3304 From HDMI Connector CEC_REMOTE PATAS Seno JHDMI_CEC To NEC MODEL DATE BLOCK SHEET LGE Internal Use Only SCHEMETIC DIA ANT FOR PROTECTION FR SERVICING IF IS ONLY MANU RES SPECFIED PARTS BE USED FOR MPONENTS IN THE AN SYMBOL MARK OF THE SCHED Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes I I SPDIF OUT t I Y D I I E I 5 I l I EE E SECRET LGBlectronics LG ELECTRONICS ot ip RS MODEL BLUEK SHEET xxLT760H UA LGE Internal Use Only P emm mmm mm mmm SCHEMETIC DIAGRAM I ANT FOR PROTECTION FROM X R SERVICING IF IS ONLY MANU RES SPECFIED PARTS BE USED FOR MP
40. D D D D D D D emm D D 3 3 3 emm 3 emm A emm emm emm emm amp USBL 3 3V_NORMAL 3 3V_NORMAL C4340 numus In DVR Ready a non MAX 1 8A 10uF I DVE Ready ica MAX 1 8A e 8 HA Hs To SOC P em em em em em em em em em em em em em em em em em em em em em em emm A A A D D D D D D D D UD D D D D D D D D a a a E em em em em em em em em em em em em em em em em em em em em em D a A A A D D D D D a D D D D D D D D D D a A THE ZN 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 LG HLELTRONILS THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC LGElectronics Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes MODEL DATE BLICK SHEET Full Scart A DIE Se oR a De i d ES D D S o LU ME PSCOO8 01 JK4600 uf pe i RS A KH KH HH HH T B hos
41. D OTR387500AA AUD MASTER CLK e 24V_AMP e opt AN alo dl a E o o H i dH dg dH og 10uF H H H Eli tl al el el dl eil dE ale AN ad R ed El A AAA A C sPk Le Du nsa Al AH el Hy Hy a O g Hlol dl a AlE uo vo DS bl gt te els 25407 Zan va al gt OII l 1 9 Gul Ol Ol Bul pul Bu 2 R5415 STI peak Sov 15405 DE SPEAKER_L E AGND PLL 1 OUT1B_2 0 NRS6045T100MMGK abate 1 5412 5 1K AVDD PLL OUT1B 1 ogy 12 Sa THERMAL O spx DVDD PLL PGND1B 3 49 GEI BST1B DGND_PLL 5 IC5400 VDR1 SPK A e GND_1 6 P 7500 NEC DGND 7 AGND SPK_L e DVDD 8 VDR2 sPK_R L eo SDATA See BST2A IR UNE CREE AUD LRCH 25V 25V 25V SpK R e WCK PGND2A AUD LRCK BCK OUT2A 2 1 scK A R5402 100 SDA OUT2A 1 12C_SDA1 L RT R5403 A100 SPK R4 a Kal el el ol mi ol 2 A AH am e CO Al ciem KINN dH d d d Id 05402 R5409 R5413 M Nn PD OJO O H A My AMINI NIN 1N4148W 12 12 15402 43 5 Hl HPA HR oz wu eil ol oO A aaa ae D Ol GOI bl bi Ol Ol O NRS6045T100MMGK moo l gt gt OF CH o OJ Bal A nu SPEAKER R S T100MMGK MAIN AMP MUTE 2 PK R e bd THE ZN SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION THE CRITICAL COMPONENTS IN THE A SYMBOL MARK OF THE SCHEMETIC LGElectronics FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET MODEL DATE ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR e LG HLELTRONILS SSC CZ
42. ECRET LGElectronics 3 3V_EMMC A IC8100 SDIN5D2 4G 974L1 RESET DUMMY 11 MY 12 DUMMY 13 DUMMY 14 DUMMY 15 DUMMY 16 N10 N11 N12 N13 N14 P12 P13 P14 pus DU10 DU11 DU12 DU13 DU14 Duis DU16 1pAT5 d lt I DAT6 al EMMC RESET BALL LT EMMC CMD BALL EMMC_CLK_BALL Y Lo ELECTRONICS M6 M5 A6 K10 bul DU3 DU4 DAT4 DATS DAT6 DATT RESET DUMMY DUMMY DUMM DUMMY _ DUMMY DUMMY DU DUMMY IC8100 3 H26M31001EFR 1 2 4 6 8 DI U EN U Z Z X H a Pal H H DEV DUMMY_9 DUMMY_10 DUMMY_11 DUMMY_12 DUMMY_13 DUMMY_14 DUMMY_15 DUMMY_16 611 012 613 014 Di D2 D3 24 D12 D13 D14 El E2 E3 E12 E13 E14 812 813 814 31 32 33 212 213 214 KL K2 K3 K12 K13 K14 Ll L2 L3 112 113 L14 MI M2 M3 MT M8 Mo M10 Mil M12 M13 M14 Nl N3 N6 NS Na N9 N10 N11 N12 N13 N14 P1 P2 28 29 P11 212 213 214 H26M21001ECR DATO DATI DAT2 DAT3 DATA DATS DAT6 DAT oosuzoNU LB Z 2 1ICB10D 1 HYNIX EMMC 2GB E12 E13 E14 H12 814 3i 32 312 313 314 A4 AS B2 B3 B4 85 86 IC8100 2 KLM2G1HE3F B001 SAMSUNG EMMC 2GB MODEL o DATE BLOCK SHEET LGE Internal Use Only
43. EK_WOL Da R8728 2 P74 EX20 kR4 INTP8 R8729 ASS PT3 EX19 KR3 LED_R R8730 TET X18 KR2 wae 2 271 est 270 KRO 2 P 3 P80 EXO EX1 EX2 P83 EX3 EX4 P85 EX5 EX6 so 2 87 EX7 ETHERNET PWR A P30 1NTp3 RTCIAZ POWER_DET SECRET LGElectronics EVDD1 P50 EX8 P52 EX10 P 3 EX11 P54 EX12 P55 EX13 22 22 22 AMP RESET AIN MA P S E ON POWER P122 X2 EXCLK FLMDO P56 EX14 P57 EX15 OPT EX31 T102 T002 217 Pl6 EX3 LC8700 EC MICOM O TIO1 TOO1 INTP MICOM_RESET LVI P46 INTP1 TIO5 TOOS P47 1NTP2 P120 INTPO EX P143 P144 P145 P00 DEER P04 SCK1 22 P131 TI06 TOO6 22 P130 ABI22 P20 ANIO MAIN ANE MUTE P21 ANIl P22 ANI2 P23 AN13 P24 ANI4 P25 ANIS P26 ANI6 P27 AN17 4 RESET TOOL1 FLMDO 9 59 59 5S ALY 8755 ALY R87004 10K R8799 slajala a o s s s s HE BEIER 5v ST AREA ajajaja Balas KRIZ x 3 S lo lalolajol x E H x n ER ES ER NE 2 H db B mo Rx SS 5 a NEC Rx NE
44. F So iu R1033 an0 MODEL OPT 1 E o c ow opt o AN22 HIGH SR PT MODEL OPT 0 Ze lt LED_PWM1 e MODEL_OPT_2 AP QE MODEL OPT 1 lt LED_PWMO MODEL FHD HD MODEL_OPT_3 F out dE ume PE MODE oPTIC MODEL OPT 3 S2 RESET MODEL OPT 4 S MOD T 7 M RFModule 5V Tolerance MODE 3D DEPTH Depth IC MODELCOBTOI ON AU20 MODEL_OPT_5 MODEL SS RL 11 ID T AT20 E DDR DDR Default e x S MODEL_O MODEL_OPT_6 amp ER E AN18 ne deccm ob CP Box m ENTM S 0 S AP MRE KEE MODE 8 7 7 G Eag Csc par z E L oK AMLE o MODEL MODEL OPT 7 2 Tuner El E E I DSUB_DET Tener i R176 10K AN19 R10 oc Sorta d D H A H Coren SEL e Ei MRED MODE S Tuner 5 E E i 2 E R162 10K AP19 AONE ERE E o B El Z E amp d 8 a g az 9 R1014 o loser gt a o x 5 dE mob S z R163 10K AR19 E E S S G MOREY E g Es RIO 33 LO MAIN AMP RESET bs El 5 5 MODEL Reserved Default 8 H S AN21 R1015 3 OPT 3 E Ei E a x E M_REModule_RESET C HI orcTRL3 H ERE Sox Ic R MODEL_O E E E oPc EN C3 TUT mio i SPK D d enr SP as d MODEL_OPT_10 EPI Support Not 5 o PC xio14 V 100 asa En ais Te B TU RESET C mm SE MODEL OPT 4 S2_RESET C AD v OPCTRLO CTRL 0 Sb i x x MODEL OPTION 8 is just for CP Box x E E It should not be appiled at MP Se D D e E gx E ee ds EA E aa THE JA SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND
45. FF1 DA 19500 3 3V_NORMAL 5 3 3 3V NORMAL EMI THE ZN 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 THE CRITICAL COMPONENTS IN THE A SYMBOL MARK OF THE SCHEMETIC SECRET LGElectronics Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 1 2V_MTK_CORE Om 0524 C506 C505 0529 C532 jsc535 Ti Is Ts Tes Te emo 1uF 1 2V_MTK_CORE Ig BLM18PG1218N1D 1 2V_MTK_AVDD 5V NORMAL LA 0525 Our FA Y Lo ELECTRONICS IC105 LGE2112 DECAP FOR SOC HIDDEN UCC hon 0527 Ie emo up 0523 0 up 1 2V_MTK_CORE IC105 LGE2112 0531 ue luF I o lug Fei eo lug MODEL DATE BLOCK eas SHEET LGE Internal Use Only PLACE AT JACK SIDE tpl 2n 716 2613 10k READY FOR FILTER EMI R611 I sc CVBS INL ain SC_CVBS_IN_IF 120 08 I Ms ceo 2604 10pF ME n i Te I Nas icm c es EE Kad 4 er ee ue x C sc rB soc 2609 ET 2623 A i00 cens p olsr TT R 100 06121 10 0 m c_com_s
46. G 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 circumstances 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 4 Always unplug the receiver AC power cord from the AC power source before a Removing or reinstalling any component circuit board mod ule 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 8 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 Do not spray chemicals on or near this receiver or any of its assemblies 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 app
47. IAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR Q6 HLELTRONILS THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC LGElectronics Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes BLOCK svav rover oo SHEET Power Pro Iidiom XMARK 3V_PROIDIOM 3 3V PROIDIOM 19202 AER c9205 27MHz 200ppm SI Si Elei aay RO OD DOE oO oO DD oO oO DD od d d OM ban QW WQ bb ba eo a T R9223 D I Sege 1 TP DATA S I bi TP DATA 5 I 25 TP_DATA 4 IO2 18 TP IO2 8 TP DA XMARK 1 8V LGDT1001 o 9 PROIDIOM RESET c Dy 3 3V PROIDIOM T 00200 y K son ver rrom so E36 0x47 o 7 IC9201 F opr o AZ1117H 1 8TRE1 EH13A D XMARK 1 8V XMARK_1 8V o i ADJ GND 4 a T G 3 3V_PROIDIOM Tm RESET PROIDIOM RESET A 9240 cazat 09242 Hr 13 0 lu Q 1uF A CH A e e oo Cap
48. Input Model name HEX wb 00 20 Offset adjustment internal white pattern HDMI1__ 67 03 0C 00 10 00 80 2D wb 00 2t Offset adjustment completed HDMI2 67 03 0C 00 20 00 80 2D 5 86 g End White Balance adjustment HDMI3 67 03 OC 00 30 00 80 2D internal pattern disappears Ex wb 0000 gt Begin white balance auto adj 4 2 White Balance Adjustment wb 00 10 Gain adj 4 2 1 Overview ja 00 ff gt Adj data W B adj Objective amp How it works 1 Objective To reduce each Panel s W B deviation 2 How it works When R G B gain in the OSD is at 192 it means the panel is at its Full Dynamic Range In order to prevent saturation of Full Dynamic range and data one of R G B is fixed at 192 and the other two is lowered to find the desired value 3 Adjustment condition normal temperature 1 Surrounding Temperature 25 C 5 C 2 Warm up time About 5 Min 3 Surrounding Humidity 20 80 jb 00 00 wb 00 1f Gain adj completed wb 00 20 Start wb 00 2f end Off set adj wb 00 ff End white balance auto adj 4 2 2 Equipment 1 Color Analyzer CA 210 LED Module CH 14 2 Adjustment Computer During auto adj RS 232C protocol is needed 3 Adjustment Remote control 4 Video Signal Generator MSPG 925F 720p 216 Gray Model 217 Pattern 78 Only when internal pattern is not available Color Analyzer Matrix should be calibrated using CS 1000 Copyright 2012 LG Electronics Inc All ri
49. Internal Use Only Only for training and service purposes ADJUSTMENT INSTRUCTION 1 Application Range This spec sheet applies to LD2FF Chassis applied LCD TV all models manufactured in TV factory 2 Designation 1 Because this is not a hot chassis it is not necessary to use an isolation transformer However the use of isolation transformer will help protect test instrument 2 Adjustment must be done in the correct order 3 The adjustment must be performed in the circumstance of 25 C 5 C of temperature and 65 10 of relative humidity if there is no specific designation 4 The input voltage of the receiver must keep AC 100 240 V 50 60 Hz 5 The receiver must be operated for about 5 minutes prior to the adjustment when module is in the circumstance of over 15 In case of keeping module is in the circumstance of 0 C it should be placed in the circumstance of above 15 C for 2 hours In case of keeping module is in the circumstance of below 20 C it should be placed in the circumstance of above 15 C for 3 hours Caution When still image is displayed for a period of 20 minutes or longer Especially where W B scale is strong Digital pattern 13ch and or Cross hatch pattern O9ch there can some afterimage in the black level area 3 MAIN PCBA Adjustments 3 1 ADC Calibration 3 1 1 Overview ADC adjustment is needed to find the optimum black level and gain in Analog to Digital device and
50. LGE Internal Use Only Only for training and service purposes 5 AV Video Trouble Shooting guide Check input signal format Is it supported IE Check AC cable for damage For damage or open conductor E Check JK4600 N Can you see the normal Replace JK4600 waveform Check the input of MTK IC105 Measure waveform at C616 because it s more easy to check Can you see the normal waveform This board has big problem because Main chip MTK have some troubles After checking thoroughly all path once again You should decide to replace MTK or not Copyright 2012 LG Electronics Inc All rights reserved 20 Only for training and service purposes LGE Internal Use Only 6 HDMI Video Trouble Shooting guide Check input signal format Is it supported E Check AC cable for damage For damage or open conductor Y Can you see the normal waveform Check JK3301 JK3302 JK3303 Replace JK3301 JK3302 JK3303 E Check HDCP key NVRAM IC100 Power 8 12C signal Replace IC100 Check the input of MTK IC105 Can you see the normal waveform Measure waveform at R323 R324 because it s more easy to check This board has big problem because Main chip MTK have some troubles After checking thoroughly all path once again You should d
51. ONENTS IN THE AN SYMBOL MARK OF TH E TES TION THE CRITIC Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes RS232C e E A im 1 eek D t T i SECRET LGBlectronics MTK ADJ MTK DEBUG UART SW2 CONNECTION BO A Interactive Bl A USB Do D I HES ot HE su CONNECTION BO A Debug NEC Bl A Debug MTK NVRAM I2C SWITCH uar swz CONNECTION L BO A NVRAM NEC H Bl A NVRAM MTK gt LG ELECTRONICS MODEL DATE BLOCK JACK_COMMON GHEET LGE Internal Use Only e 14 14102 IR R4113 BLM18PG121SN1D 100 KEY1 e R4114 100 2 KEY2 T e me C4102 KOL 0 1u e R4 AC 14100 Loc i BLM18P61218N1D RR e E D 64103 64101 0 luF Lef Ba R410 o A R4126 1 5K LED_R e IR OUT RS232C R4123 2 e 1 SENSOR R1124 100 ef R4128 100 opt IR_OUT_HDMI1 GDS R4138 10K IR_OUT_HDMI2 R4140 10K 94105 2503052 R413
52. OTECTION FROM X RADIATION EE EE SECRET Lc ELECTRONICS MODEL m DATE o es i THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC LGElectronics BLOLK GHEET D 3E ill Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes E T Ee e E l r REAL TIME CLOCK RTC M41T83RMY6F sow BA8700 BATTERY MICOM MODEL OPTION MODEL OPTION PIN NAME PIN NO HIGH Low 80 opt opt MODEL_OPT_1 79 opt opt MODEL_OPT_2 78 NON_CLOCK CLOCK THE ZN 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 THE CRITICAL COMPONENTS IN THE A SYMBOL MARK OF THE SCHEMETIC Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes ON OFF1 R8718 re P60 6 88720 22 zez R8721 2 P63 e 88722 2 P31 1103 1p03 1NTP4 R8723 2 P64 RD R8724 2 P65 WRO R8725 2 Ls WR1 2 R8726 2 P67 ASTB WARM R8727 2 P77 EX23 KkI INTP11 R8752 AS P76 Ex22 Kk6 INTP10 MAGIC WO R8765 2 P75 EX21 KR5 INTP9 REALT
53. Push IN START key in service remote control 2 Select Tool Option 1 and push OK key 3 Punch in the number Each model has their number 9 Optional adjustments 9 1 Manual ADC Calibration 9 1 1 Equipment amp Condition 1 Adjustment Remote control 2 801GF 802B 802F 802R or MSPG925FA Pattern Generator Resolution 480i Comp1 MSPG 925FA model 209 pattern 65 Resolution 1080p Comp1 MSPG 925FA model 225 pattern 65 Resolution 1080p RGB MSPG 925FA model 225 pattern 65 Pattern Horizontal 10096 Color Bar Pattern Pattern level 0 7 0 1 Vp p 9 1 2 Adjust method 1 ADC 480i 1080p Comp RGB 1 Check connected condition of Comp1 RGB cable to the equipment 2 Give a 480i Mode Horizontal 100 Color Bar Pattern to Comp1 MSPG 925FA Model 209 Pattern 65 3 Change input mode as Componenti and picture mode as Standard Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 16 4 Press the In start Key on the ADJ remote after at least 1 min of signal reception Then select 7 External ADC And Press OK or Right Button for going to sub menu 5 Press OK in Comp 480i menu 6 Give a 1080p Mode Horizontal 100 Color Bar Pattern to Comp1 MSPG 925FA gt Model 225 Pattern 65 7 Press OK in Comp 1080p menu 8 Perform 6 and 7 in RGB PC 9 If ADC Comp is successful ADC Component Success is displayed If ADC calibration is fai
54. R ON key 2 Place optical probe on the center of the display 2 Edge LED models applied GUMI wintertime only LGD Module in LGEKR It need to check probe condition of zero calibration Aging Cool Medium Warm before adjustment GP2 time X y x y x y 3 Connect RS 2320 Cable m Min 269 273 285 293 313 329 4 Select mode in ADJ Program and begin a adjustment 7 281 293 297 313 321 343 338 5 When WB adjustment is complete with OK message adjustment status of pre set mode Cool Medium Warm 2 280 290 296 310 320 340 336 6 Remove probe and RS 232C cable 3 279 289 295 309 319 339 335 e WB Adj must begin as start command wb 00 00 and 4 277 286 293 306 317 333 333 finish as end command wb 00 ff and Adj offset if need 5 275 282 291 302 315 332 330 6 273 278 289 298 313 328 327 4 2 6 Reference White balance Adj coordinate and 7 271 276 287 296 311 326 325 color temperature 8 270 274 286 294 310 324 324 Luminance 204 Gray 80IRE 9 269 273 285 293 309 323 323 Standard color coordinate and temperature using CS 1000 over 26 inch 4 3 Tool Option selection Coordinate Mode Temp Auv Method Press ADJ key on the Adjustment remote control x y then select Tool option Cool 0 269 0 273 13000 K 0 0000 Medium 0 285 0 293 9300 K 0 0000 Warm 0 313 0 329 6500 K 0 0000 x Sta
55. SHEET Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes THE ZN 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 THE CRITICAL COMPONENTS IN THE A SYMBOL MARK OF THE SCHEMETIC Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes SECRET LGElectronics CI POWER ENABLE CONTROL 5V_NORMAL l 6202 DE pe R6242 2 2K Lo ELECTRONICS Option FOR MTK Option FOR LG1152 MODEL DATE BLOCK 99 LGE Internal Use Only H NIM for Commercial EU 120_SCL6 5V o e em D em D D D D D D D D D D D D D D D D D D D D D op Gu Gu a a up up Q 12C_SDA6 close to TUNER gt TUNER_SIF 06501 Max 240mA 1 8V_TU A TU RESET close to Tuner 1 should be guarded by ground f em R6505 109 JIF AGC2 No via on both of them L anl 3 Signal Width gt 12mils gt Signal to Signal Width 12mils Ground Width gt 24mils should be guarded by groumd IF N IF P 150mA M
56. ecide to replace MTK or not Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 21 LGE Internal Use Only 7 RGB PC Video Trouble Shooting guide Check input signal format Is it supported IE Check AC cable for damage For damage or open conductor y Check JK3603 Can you see the normal waveform IK Check the input of MTK IC105 Measure waveform at R323 R324 because it s more easy to check Can you see the normal waveform ly This board has big problem because Main chip MTK have some troubles After checking thoroughly all path once again You should decide to replace MTK or not Replace JK3603 Copyright 2012 LG Electronics Inc All rights reserved 22 LGE Internal Use Only Only for training and service purposes 8 Analog RF Audio Trouble Shooting guide Check RF cable amp signal eg Check TU6500 Pin6 SIF output IK Replace Tuner N Check Audio AMP output L5402 Replace L5402 L5403 L5404 15403 L5404 L5405 L5405 Y N Check IC5400 gt Replace 105400 ly Check C352 SIF signal to IC105 ly Replace IC105 Copyright 2012 LG Electronics Inc All rights reserved 23 LGE Internal Use Only Only for training and service purposes 9 AV
57. ghts reserved 12 LGE Internal Use Only Only for training and service purposes e Adj Map 2 O S Module AUO CMI Sharp IPS Adi it Command Data Range Default Coordinate J tem tower caseASCII Hex Decimal Mode Temp Auv CMD1 CMD2 MIN MAX y R Gain j g 00 CO Cool 0 271 0 002 0 276 0 002 13 000 K 0 0000 GGain j h 00 CO Medium 0 287 0 002 0 296 0 002 9 300 K 0 0000 Cool BGain j i 00 co Warm 0 315 0 002 0 332 0 002 6 500 K 0 0000 R Cut G Cut Standard color coordinate and temperature using CA 210 B Cut i Bean li gt S m CH 14 by aging time 1 Edge LED models applied only LGD Module in LGERS GGain j b 00 CO T BGan j S 00 CO Aging Cool Medium Warm FEI TR Cul GP2 time X y D y x y G Cut Min 269 273 285 293 313 329 B Cut 1 0 2 279 288 295 308 319 338 RGain j d 00 co 2 3 5 278 286 294 306 318 336 G Gain j e 00 co 3 6 9 277 285 293 305 317 335 Warm B Gain j f 00 co 4 10 19 276 283 292 303 316 333 R Cut 5 20 35 274 280 290 300 314 330 G Cut 6 36 49 272 277 288 297 312 327 7 50 79 271 275 287 295 311 325 8 80 149 270 274 286 294 310 324 4 2 5 Adjustment method 1 Auto WB calibration 9 Over150 269 273 285 293 309 323 1 Set TV in ADJ mode using P ONLY key or POWE
58. ipment connection MAP HDMI1 HDMI3 RGB In the data of EDID bellows may be different by S W or Color Analyzer Input mode T Rs 2320 lt Computer a Product ID gt Rac Y rs 2320 HEX EDID Table DDC Function i m Pattern Generator 0001 01 00 Analog Signal Source If TV internal pattern is used not needed 0001 01 00 Digital b Serial No Controlled on production line 4 2 4 Adj Command Protocol c Month Year Controlled on production line Command Format ex Monthly 01 01 e START 6E A 50 A LEN aos A CMD A 00 A VAL A cs sroP Year 2012 16 Model Name Hex LGTV LEN Number of Data Byte to be sent MODEL NAME MODEL NAME HEX CMD Command LG TV 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 LG TV VAL FOS Data value CS Checksum of sent data Checksum LG TV Changeable by total EDID data A Acknowledge 91 92 93 Ex Send JA 00 DD Ack A 00 okDDX HDMI1 43 15 X HDMI2 43 5 X RS 232C Command used during auto adjustment HDMI3 43 F5 X RS 232C COMMAND REB x x EC CMD ID DATA Explantion wb 00 00 Begin White Balance adjustment wb 00 10 Gain adjustment internal white pattern Vendor Specific HDMI wb 00 1f Gain adjustment completed
59. le Cade xi PASPDSTA g e 27 Realtek WoL ETNHUB_AVDD33 ETNHUB_DVDD33 50 x2 24 LCPULINTERRUPT Lay E ES En FINES Fa eebe Xtal matchin Tn 3 R8420 VCTRL P4MODE MODESET3 ETNHUB_DVDD33 I 88422 DTEST2 DD18 1 68405 gc 80422 6 TES DISDUA ODES 68405 cs 68429 AAA DTESTI ISDUALMDY MODESETA Fam SEAN 000 So 1uF F uF 0 1ur Co Leg AGND_7 STA I i 10v S OPT 1K IBREF ESETE ETHERNET RESET 15 e AVDD18 12 sup meq SETGROUP e Place Close To RTL8306 E o z ET ETNHUB DVDD33 I Regd I SS a elo a E S I Ek slala ix 3 312 28 ES amp jala a salsas z gig e R8439 Realtek WOL 3 HERE E EEES EENS ETNHUB_AVDD18 2 BE Z SISIEIEIS a Je 58 ETNHUB_AVDD18 _ E lu mA oce A ees gt o o c 08436 3 CONFIG FOR MAC4 0 10 e I m 1 wel adr OSE MS ER aT rd H Tea Mide 11111 Differential 100 ohm ma ee Je el Je del ee ld de I DISDUALMII I PAMODEL ze PE 28 88 22 22 E Ed zx BB RE ZEE E ES dd ds dd dad ds dd dd m BOR mA m RR mo m GXMODE E N N a N N H E mod N N 5 H S gs gg gs gg I I DE zE Be Pa DUP3_GYMODE I S EE EE BE nS bk SE RR RH LANL TO PHY Chip LAN2 I MTK TO RTL Mat eh tm i g PHY TO RTL matching FOR DEBUG ETNHUB_AVDD18 ETNHUB_AVDD18 A A ETNHUB_DVDD33 ETNHUB_DVDD33 R8469 10K opr 3
60. licator 10 96 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 Do not defeat any plug socket B voltage interlocks with which receivers covered by this service manual might be equipped 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 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 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 Copyright 2012 LG Electronics Inc All rights reserved Immediately before handling any semiconductor component or semicond
61. lose as possible to the component body 2 Bend into a U shape the end of each of three leads remaining on the circuit board 3 Bend into a U shape the replacement transistor leads 4 Connect the replacement transistor leads 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
62. lure ADC Component Fail is displayed 10 If ADC calibration is failure after rechecking ADC pattern or condition retry calibration 11 If ADC RGB calibration is successful ADC RGB Success is displayed If ADC calibration is failure ADC RGB Fail is displayed 12 If ADC calibration is failure after recheck ADC pattern or condition retry calibration 9 2 Manual White balance Adjustment 9 2 1 Adj condition and cautionary items 1 Lighting condition in surrounding area surrounding lighting should be lower 10 lux Try to isolate adj area into dark surrounding 2 Probe location Color Analyzer CA 210 probe should be within 10 cm and perpendicular of the module surface 80 100 3 Aging time 1 After Aging Start Keep the Power ON status during 5 Minutes 2 In case of LCD Back light on should be checked using no signal or Full white pattern 9 2 2 Equipment 1 Color Analyzer CA 210 NCG CH 9 WCG CH12 LED CH14 2 Adj Computer During auto adj RS 232C protocol is needed 3 Adjust Remote control 4 Video Signal Generator MSPG 925F 720p 216 Gray Model 217 Pattern 78 2 3 Adjustment 1 Set TV in Adj mode using POWER ON 2 Zero Calibrate the probe of Color Analyzer then place it on the center of LCD module within 10cm of the surface 3 Press ADJ key EZ adjust using adj R C 6 White Balance then press the cursor to the right Key P When Key P
63. ndard color coordinate and temperature using CA 210 CH 14 1 LGD Coordinate Mode Temp Auv X y Cool 0 269 0 002 0 273 0 002 13 000 K 0 0000 Medium 0 285 0 002 0 293 0 002 9 300 K 0 0000 Warm 0 313 0 002 0 329 0 002 6 500K 0 0000 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 13 LGE Internal Use Only 4 4 Wi Fi Test 2 Check the sound from the TV Set Step 1 Turn on TV Step 2 Select Network Connection option in Network Menu Instart menu gt Menu gt Network Setup l 3 Check the Sound from the Speaker or using AV 8 Optic TEST program It s connected to MSHG 600 Flow Line Cell Line 1111 Remark Inspect in Power Only Mode and check SW version in a master equipment pu Step 3 Select Start Connection button in Network Connection RE Wireless IPTIME hmhm oh 5 Check Commercial features E del Mode info Commercial Feature Step 4 If the system finds any AP like blow PIC it is working IR DC Ext RJP well Name inch Out Power SPK HDMI Pro ldiom Out 12V Out interface LT760H ZA 32 37 42 47 O O O O O Wir e jeongs ma 5 1 D External SPK Out RE Wireless iptime BP Par 4 5 HDMI ARC Function Inspection 4 5 1 Test equipment External SPK OUT Optic Receiver Speaker MSHG 600 SW 1220
64. nt remote control 4 1 3 Download method 1 Press ADJ key on the Adjustment remote control then select 12 EDID D L By pressing Enter key enter EDID D L menu 2 Select Start button by pressing Enter key HDMI1 HDMI2 HDMI3 HDMI4 RGB are writing and display OK or NG For Analog For HDMI EDID D sub to D sub DVI D to HDMI or HDMI to HDMI 4 1 4 EDID DATA e HDMI EDID DATA 2D H freq kHz V freq Hz 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 OxOA OxOB OxOC OxOD OxOE OXOF Transmission A I Set ID 20 Cr O K X or NG 0x00 00 FF FF FF FF FF FF 00 1E 6D aa b 0x01 01 03 80 AO 5A 78 OA EE 91 A3 54 4C 99 26 2 Check the menu on in start IN START UTT 4 APP History Ver 25682 Eye Q Gain 5000 POL DB LGD ALEF SI2173 XXXXXX Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 0x02 OF 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80 0x03 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C 0x04 45 00 AO 5A 00 00 00 1E 66 21 50 BO 51 00 1B 30 0x05 40 70 36 00 AO 5A 00 00 00 1E 00 00 00 FD 00 3A 0x06 3E 1F 53 10 00 OA 20 20 20 20 20 20 a 0x07 a 01 1
65. oaded or not at In Start menu Refer to below gt Check the Download to Cl Key value in LGset LGE Internal Use Only 3 6 1 Check the method of Cl Key value 1 Check the method on Instart menu 2 Check the method of RS232C Command 1 Into the main ass y mode RS232 aa 00 00 CMD 1 CMD 2 Data 0 A A 0 0 2 Check the key download for transmitted command RS232 ci 00 10 CMD 1 CMD 2 Data 0 C l 1 0 3 Result value Normally status for download OKx Abnormally status for download NGx 3 6 2 Check the method of Cl key value RS232 1 Into the main ass y mode RS232 aa 00 00 CMD 1 CMD 2 Data 0 A A 0 0 2 Check the mothed of Cl key by command RS232 ci 00 20 CMD 1 CMD 2 Data 0 C I 2 0 3 Result value 01 OK 1d1852d21c1ed5dcx Cl Key Value 3 7 WIFI MAC ADDRESS CHECK 1 Using RS232 Command 4 Manual Adjustment ADC adjustment is not needed because of OTP Auto ADC adjustment 4 1 EDID The Extended Display Identification Data DDC Display Data Channel download 4 1 1 Overview It is a VESA regulation A PC or a MNT will display an optimal resolution through information sharing without any necessity of user input It is a realization of Plug and Play 4 1 2 Equipment Since embedded EDID data is used EDID download JIG HDMI cable and D sub cable are not need Adjustme
66. of each parts are followed each drawing and specification by part number in accordance with BOM 5 The receiver must be operated for about 20 minutes prior to the adjustment 4 Model General Specification 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC Wireless Wireless HD Specification Option No Item Specification Remarks 1 Market EU PAL Market 33Countries DTV amp Analog Total 33 countries DTV MPEG2 4 DVB T 33 countries Albania Austria Belarus Belgium Bosnia Bulgaria Croatia Czech Estonia France Germany Greece Hungary lreland Italy Kazakhstan Latvia Lithuania Luxembourg Morocco Netherlands Poland Portugal Romania Russia Serbia Slovakia Slovenia Spain Switzerland Turkey UK Ukraine DTV MPEG2 4 DVB C 33 countries Albania Austria Belarus Belgium Bosnia Bulgaria Croatia Czech Estonia France Germany Greece Hungary lreland Italy Kazakhstan Latvia Lithuania Luxembourg Morocco Netherlands Poland Portugal Romania Russia Serbia Slovakia Slovenia Spain Switzerland Turkey UK Ukraine 2 Broadcasting system 1 PAL BG Analogue 2 PAL DK VHF E2 to E12 UHF E21 to E69 3 PAL 1 1 CATV S1 to S20 HYPER S21 to S47 4 SECAM L L DK BG I 5 DVB T Digital 6 DVB C VHF UHF DVB T Analog Upper Heterodyne 3 Receiving system Digital COFDM QAM Guard Interval Bitrate Mbit s 1 4 1 8 1
67. or IR OUT inspection 4 Pro Idiom Check 1 Connect the RF Cable 2 Turn to the Pro Idiom channel No 333 3 Check the video amp sound Only displayed at POWER ONLY mode DIGITAL 96 1 No Program Information EzvenTMIO mo 00 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 15 6 AUDIO output check 6 1 Audio input condition 1 RF input Mono 1 KHz sine wave signal 100 Modulation 2 CVBS Component 1 KHz sine wave signal 0 5 Vrms 3 RGB PC 1 KHz sine wave signal 0 7 Vrms 6 2 Specification Item Min Typ Max Unit Au dio practical max Output 9 0 10 0 12 0 Ww L R Distortion 1090 max 8 5 8 9 9 9 Output Remark 1 Measurement condition Vrms EQ AVL Clear Voice Off 2 Speaker 8Q Impedance 7 GND and HI POT Test 7 1 GND amp HI POT auto check preparation 1 Check the POWER CABLE and SIGNAL CABE insertion condition 7 2 GND amp HI POT auto check 1 Pallet moves in the station POWER CORD AV CORD is tightly inserted 2 Connect the AV JACK Tester 3 Controller GWS103 4 on 4 GND Test Auto If Test is failed Buzzer operates If Test is passed execute next process Hi pot test Remove A V CORD from A V JACK BOX 5 HI POT test Auto If Test is failed Buzzer operates f Test is passed GOOD Lamp on and move to next process automatically 7
68. replacement component around notch at stake top Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 3 Solder the connections CAUTION Maintain original spacing between the replaced 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 whenever 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 A
69. ron 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 circuit board printed foil d Closely inspect the solder area and remove any excess or splashed solder with a small wire bristle brush ads 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 c
70. solation 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 protects 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 ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed metallic parts such as antenna terminals phone jacks etc If the exposed metallic part has a return path to the chassis the measured resistance should be between 1 MO
71. t MTS369 XTAL OUT c 0 Low Normal C 70104 3 5V_ST High Write Protection MTK JTAG Close to eMMC Flash G M24M01 HRMN6TP AG R100 R152 METAS J ani 8 IC8100 I EMMC CLK RS R183 JTRST 2 7K i JTDI CLOS JTMS z LGE2112 ITCLK D D0 AP14 ARLE 30700 e INPS 3 AMIA AP18 JTDI C gt 28 Sa 2614 0200 lt R144 ARIS AULE 10K ats T2 MTK NEC RX AN14 AT16 f x Amar gt C rk_NEC_Tx H AP12 A35 HDCP EEPROM sm Somo AN12 3 oscLo C7 us EMMC_DATA 2 7 AP15 3 3V_NORMAL S ospar C T EMMC_DATA 7 AN15 E per EEP Se ei osci1 CI EMHC DRTATSI 10100 mg 5 M24C16 R A EMMC_DATAT51 MT5369_XTAL_IN gt ME VATET st pi AU34 EM ATA 4 25 MT5369 XTAL OUT C EHEC BATA 3 AVDD 3358 i x gt EMMCDATATZ c116 AH26 K R191 22 SE o F di HE 0 1u oPT R192 22 gt R178 R147 R150 R153 STRAPPING PWMO LED PWMl OPCTRL3 AVDD_33SB 4 7K ik ae ik ak s De OPT OPT ICE mode 27M Serial boot 0 0 0 lt AK17 3 3V_NORMAL I L LED_Pwmo ICE mode 27M ROM to Nand boot o o T I lI HD LED Fwa gt AM20 EE ICE mode 27M Rom to eMMC boc o 1 o See OPWRSB Riss ar from eMMC pins share pins w s NAND Pere mm GE 1K gt AVDD33_PLLGP 9100 ICE mode 27M ROM to eMMC boot 0 1 1 6118 E 337 OPT qel 2 muera Da NE tron EDIO i 533 PLLGP 3 C MMBT3904 N from SDIO pins Io E Suar 3 ed Ka lt B gt OPT ca p27 R159 4 7K AVDD10 LDO AT21 e L STE AR21 ADDR 0 14 C Cer spa f LO PCM RST
72. t 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 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 LGE Internal Use Only SPECIFICATION NOTE Specifications and others are subject to change without notice for improvement 1 Application range 3 Test method This specification is applied to the LCD TV used LD23E chassis 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
73. tus 1C8700 yr N Check IR input state of IC8700 Check IR board 13pin IS Re download NEC Micom Copyright 2012 LG Electronics Inc All rights reserved 247 Only for training and service purposes LGE Internal Use Only 3 Analog RF Video Trouble Shooting guide Check RF cable 8 signal IK N Check TU6500 Pin8 Video output TE Replace Tuner Y N N Check tuner 5V power R6513 Check IC2404 EE Replace IC2404 Y N Check tuner 3 3V power L6502 IF Replace L6502 Y N Check tuner 1 8V power IC6501 y Replace 106501 2pin 1 8V N Check MTK LVDS output gt Replace IC105 Copyright 2012 LG Electronics Inc All rights reserved 18 LGE Internal Use Only Only for training and service purposes 4 Digital RF Trouble Shooting guide Check RF cable amp signal N N Check tuner 5V power R6513 Check tuner 5V power R6513 Replace IC2404 y Check 110 Signal ec igna TU6500 Pin 3 4 Replace T6500 LY Check DIF Signal N ec igna gt TU6500 Pin 10 11 Replace TUBSDD ds Check X100 and licati ec anc application y Replace X100 circuit y Replace IC105 Copyright 2012 LG Electronics Inc All rights reserved 19
74. uctor equipped assembly drain off any electrostatic charge on your body by touching a known earth ground Alter natively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent poten tial shock reasons prior to applying power to the unit under test 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 electri cally 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 material to the chassis or circuit assembly into which the device will be installed CAUTION Be sure no power is applied to the chassis or circuit

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