LCD MONITOR TV SERVICE MANUAL
Contents
1. V 992 H H 5 5 20 51 x BSAd AE 0 602 08 H T3 E 4 SRA 0028 910 00 E IAS 8 lt H zz B B Ly m anp 0 mu 1213 E 777 a a ESZI H 70 3 H 2 0 602 04 87 23 6 J8un ye TnpON H DW DON AE ER 0 2 z 2 i H IAQ OOAY AE E z 3 13 H ma H z C3NO HMd ri z EE z H QA Age Eu H E a 2 15700 x eu E 5 A 5 Ma 023 1499 z m s E ons 298 H B HAG 62494 H z 0 ua m 8 0 A 1 224 BEO 10229431 BOLD 909 yoz3 dODA AE E N m v JO DOV ODAy AE E4 H 2N oe 0 802 02 2 z d S e H y 16 600 157 3 90 V SQ x2. H 1S7AS y STE E E E 21 3 a1 09 42 E H AD US 1 WB ay AAT ze 5 5 Say 0 2 Ly 22 ON3 P v yu 0 ABE Age H 97 1119 5 3000 27 2700 m WU H z ae H V xA AGE 5580 Zy H 31 503 9 H E 2 60251 9071 iog mt 4 5 TF m See A E nano E INNI 9 102 0 508 02 8 H 1 m iaa ie as Wwe H Ey i m 2 E 0 208 08 8 z 5 H TAQ t V 1S87dODA V 187A8 LGE Internal Use Only Copyright O 2008 LG Electronics Inc All right reserved Only for training and service purposes HDMI DVI 34305 HL 30 Haya 78445 FHL NI 51404402 10911790 381 0391 38 SIHYd 03142385 SI8NLYAINYA LYHL 7113663 5 41 9NI91A635 SOHYZVH X085 1991819313 ONY 39113 NOTLVIQVH X WOH 1931084 INVLHOGNI 5301173 1 123046 S3IVHOdHOONI 211303925 5 30 TOBWAS 4 gt e 3NIT dH 1 N Fees 888 3np 0 B 15 49 gt
3. Or cis 1 1 3 1 1 O 50831 C ran 1 amp z T gt y C3 1 i 2ur s04 gt 2 neuem 3 C rmvns ann agii E 8 __ ____ 928 SAL His 00 00 ELE Serra 8856 8 5 56 a 6 ER RR HS TEN m E EJ BB FF BR cm nu 2 FSOWL AT AL E383 EB ar H 2 I LGE Internal Use Only 33 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes AMP re 1n0 H dH gt 1081 2N d0Z 0 602 02 a Wo 244 do gt NMOO LNHS QN9 SSVdA8 F 9VdL c H7 1nOnv 7dH 17 cOGOI i o la ANO fla EEE ES RS RSE AOS 379Nv u34vM 30000 3d0005 ZZ 49000 40000 0 2892 9999 9995 pag 2992 lt H7S sd gt pA apa ri 6899 2 TE 1 5 5 C TS 0 O Cu
4. F arozor s 0 F 9 0201AS 7 zen A 1 4000 A04 2089 22084 5 c3 grau AOE 190 2 502 2090 OJUTA S SMAI 10808250298 pog aL 7099 r 3108082 0298 AOE 190 2 502 80 H317 QNnog9 SHA S 9 LGE Internal Use Only E Copyright O 2008 LG Electronics Inc All right reserved Only for training and service purposes POWER 211343805 JHL 40 T08AAS JHL NI SIN3NOdAOJ 7 211180 3 0351 38 514 03149345 S3Hn1VJONVA ATNO TYILNIS SI JI 9NIOIAH3S SQdyZvH MOOHS 1y21812313 CNY 381 NoILvIQyH X NOIL23IOHd INYIHOdAI S3univ34 1123 S3LVHOHHOONI JIL3W3H2S 51 1 30 MHVW T0845 V 3 H JO H H z z PI 4 5 z J8MOdH H H F AE E O03 AG 2 H H z an AES 2 H 07492 590 H OA H 8 EA Ed ry ZI 22 Uy a AE oem 7 8 zc m aay Je y3d E Eu z SRN 1neunp 2 E
5. UNO 5 Dzy tru A0y38 cora 7 aec olg T T in 58 DA AE 22 QQAQ AE Et 300 2 9 0 7 22 otri SaA9 H3Nh L ON HOF 0079 SLW 306E 15 T3IHS 1 315 lt 31 sn OD anzyo o ao G vaya 110 0301 11038 A 9 2018779 ANN vI 4 NIE E p Q5 19021 vas 7 1ina nrnnv 7 5 gt LER ELI Snus 7 21 p lt lt 5 NODLNY 007 el 8 17554 rary 5 1 2 4 iy 6 2 ANN CON y 9 541 lt es X 0 a 701 705 1 RA ps wet uv C 102 T 9075 ss 7 A v3H A ex g ve p a 7 n ni vns AG B gt 2 B L yndut fau Mr xt 1 88 i Ao T BENE g 5 1344 SHE 1700 95 2cMaA D V H3Nn17 AG 0 YOYA BSA LGE Internal Use Only 99 Copyright 200
6. LGE Internal Use Only 30 Copyright O 2008 LG Electronics Inc All right reserved Only for training and service purposes INTERFACE n 8 ICES 8800 1 50 m 00 a aL 8 7 N aoo asn lt 0 ICESSH 20931 o mu 1 5 y 9091 n 5 VSN AQE 190 2 502 6290 7 lt 93 180 2 502 17 8ou vas 2aa peo 7 8987 1287 200 gt 0 W 15 ATUO a2tAu85S 8asn was 7 OILANSHOS JHL 30 MEVA 108445 V NI SIN3NOQA0O 1 111 804 0351 38 S1HYd 03143345 S38NLYANNYW AINO TWIIN3SS3 SI JI 9NIOIAH3S SQHVZVH X20HS 2 12313 ONY 38114 NOLLVIQVH X 1084 NOILO3108d LNVLHOdWI 5380133 112305 S3LVHOdHOONI AYHOYIO 21134325 SIHL 40 T08gAAS JHL INI T 5 2 XT 90 gogar LN NOdWOI AOE LOOEIESOD 23041 6099 T 2082 FP NI H d400 Fiber Optic 17 sarao 100 2 2 157 009 V 1S dOQ AE 1 31095 2 lt 71 Ms Ay lt r Dt 8nsa 8 5 nsa 7 1 P ww c pensa 7 INASHTENSA T NASA TENSO 7 7 s da Ay 7 Ms oxu4sC T
7. S JN 800 V p Baa 187 VLVOA y OSSA c 522246222 Ee VLVOA QOAW Ag 2 gt 08 4 xeu rtu 4 9 o o a LEES yoo 200 cuu EDDA ai I Y d1 42297 SGNOGAH T OcOI yaco 0 LL eu Ags 1 a m e gt gt Q 0 aBueu 8 83 150 2800 y ana 000 gt HLONAT WLOL SSuudav op Oc Dru 1u007 7 va 4007 ova 1900 25 lt 19087 2572 71 900 23 Syed ve VLVOA 24 gt DI ID ZWDALO QQAW AS 24122 1 580 gt 07 JEHOVA I VLVOA cc cocuv IS VLYOW O IZ VLYOW I3 VLVOA AS vy HOW 8 HOVW 8 HOYA 6 HOVA JHOVA 98 2 m o 5522 __ 00 41098 9029 m 25 5 OIL3N3H0S JHL 30 708 5 NI SIN3NOdNOO WOTLIHD 0351 38 SIBVd 031 9395 SJHNLYANNYW AINO 1 1011 41554 SI 41 9NIOIAH3S N3HM SO8yZYH 90HS 17919193719 38114 NOI1VIOYH X NOTLOFLOHd 804 INVIBOJd
8. input 12 80 3b 00 20 Copyright O 2009 LG Electronics Inc All right reserved Only for training and service purposes 1 81 00 21 00 20 20 BF 49 20 20 11 21 0 90 00 20 20 an 3n 3n 00 20 20 H3 1F hz 00 ell 40 TA FD 20 ap 81 30 av 00 00 01 01 25 4F zl 4D JB FC LGE Internal Use Only ADJUSTMENT INSTRUCTION 1 Application 1 This spec sheet 15 applied all of the LCD TV with LD84J chassis 2 Not included spec and each product spec in this spec sheet apply correspondingly to the following each country standard and requirement of Buyer 2 Designation 1 The adjustment is according to the order which 15 designated and which must be followed according to the plan which can be changed only on agreeing 2 Power Adjustment Free Voltage 3 Magnetic Field Condition Nil 4 Input signal Unit Product Specification Standard 5 Reserve after operation Above 30 Minutes 6 Adjustment equipments Color Analyzer 210 or 110 Pattern Generator MSPG 925L or Equivalent DDC Adjustment Jig equipment SVC remote controller 3 Main PCB check process APC After Manual Insult executing APC 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 display
9. 5 11 AUO ALO OVdLSESANL LGE Internal Use Only 24 Copyright O 2009 LG Electronics Inc All right reserved Only for training and service purposes DESCRIPTION OF BLOCK DIAGRAM 1 Input Interface 1 1 PC Input RGB Input is directly transmitted to LGE1854C scaler Clock 12Mhz and display up to 1920 1080 resolution DVI Signal input go to scaler through TMSD351 DVI HDMI Switch PC Audio is connected PC Audio input by Stereo Cable 1 2 Video Input Component YPbPr YCbCr signal input Up to 1080P Resolution CVBS S Video CVBS S Video signal input supporting 480P HDMI 1 2 Digital signal input Included Audio 1 3 RF ATSC NTSO Input ATSC NTSC Input 1 4 Audio Input Component Audio L R Stereo For PC input 2 Output Interface Video The video signal goes to LGE1854C Scaler gt Frame Memory 210MHz converted LVDS signal gt Module Audio The audio is divided Digital signal at Scaler go through NTP3000A Audio Amp IC and generate to Speaker Head phone signal is divided to stereo signal at Scaler then generate Headphone Amp IC TPA6110 Optical Output Generate audio output from Scaler SPDIF Optical 3 Power Interface Input 5V 15V from Power Board is converted to 3 3V 2 6V 1 8V 1 25V 1 2V by Regulator and DC DC Converter Supply power to Module Audio Amp and IC Copyright O 2009 LG Electronics Inc All right reserved 25 LGE Internal Use Only Only for training and serv
10. ONO 171 1307 1403 5 200 3 8 1 amp 7 vas 2na C PUBELSA C5 J guis 71 2 DZBH AG CI yaaa IAq TOS I00 JXH OXH OxH mio 8 ES 81 1A0 795 900 ML y 4280 AQyiu 2780 ADE XH IAQC ejan 5 n id ODHJI 16 46 en gt 8 A gosn A 215 390 CO amao 17 sap 71 E lt xe 25041 c 250 speres ae ea ano c vas yaom F gt 05 vaom 7 x x P uo Au ff ge od M NO 40 AN 0 V m GOWL AE E ala a Pile lt lt q H A z z r 01 lt s m 0 m m T ga Domus 356 x q ES eurn LI H wa C3 rus m gt 4XH7J50AL putu 1 _ 1 H 0 50 C 1 ts PASEO IESONL 4
11. ET 9 m eS Stren Tuv ETT es iur u awo219 Astana M lt 2 1 8 Tany arae el ony mueg ca 19 ony grana 15 2012 EL 7 900 8113 1 WINI JIS ANY jo ErT2200A AGP T i diNI JIS lt 1 18 18 00 V v OND 3nr O opto 315 AE LNOSBAD__3MF 0 5512 EE QQAV 02 5 2 EE QQAV dONIH 0 WNIH 599 44000 dONIS __ WNI9 dONIS8 1174 8 WNIS 0 7290590 44000 dr NIg N338 3 0 lt CI SBAEN 7 C 1S8 9 V 9 C 14703014S 9 EP 7 EHE co ozs 9 Lv E 6810 y A dWo2 9 teeta 1 9 dd3d His ot 8 lt lt INASA TENSO 19 Y 90 85 9 442 10 10 09 mmm m 0 AM ul Doo Y z z o z x x x s o z x x z x x x x o o z lt gt c c o lololzioioisolsjojoj o j oj oioioioloizioejoioi jiejioi im m m Z G 5o 5 5 G 5 5 6 gt gt gt lt gt gt G o o o m o o o 0 gjaja 5 5 5
12. SN 58 E re c1 4000 777 478 No 00W hos BELO ZELDA m 0 Vus z ADvdH B B 72 m 5 SAO m 3 E 7777 So V 15715 m H MOJ H z 5 0 m E ids H z E SEL 0 Zy y 90 21 158 EAS 5 z z 5 15746 h ADY3H lt 7 ER 98 2 coco Sac zgr nco E 9 1 023 angy 22 em 2g 2Q pueog HIG 17 1 4 AWIQ vrL2 w 9140 5 1 z raa z au 555 41080820298 0 802 02 074 74 181 alos 5 ad 5 DS 8 8 5 5 6022 7 gt op ALO E TT 2 MA 58 EOZOL 17 NOTANIDO gt NO ANI z se E SOSOEEdA E VOLJI 8 B 1 i E Y nook zzz ano z EE r3 H H
13. SOHVZYH YOCHS 1 2 12313 ONY 38714 NULLVIQVYH X NOLIOSIOdd 1 01 54401 34 1 12355 31 104409 AVHOVIO 91130395 5IHL 40 WAYN TOBNAS JHL 9 ANZ 006 18 5 V 15 AS gt NO H3gAV 031 O31 ND 3078 0310 3287931 7 E 87 SNOHCOV 3H ES T T d H 1307 3N HdUV3H 110 d H CAS 91 5595 901 5 LGE Internal Use Only 35 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes CONTROL KEY 5 JHL 30 MEVA ENAS FHL NI SIN3NUdAUO 1 211189 035N 38 S1HYd 04143348 S3HnlVJDNVA AINO LYHL 171133553 SI 31 UNIJIAd3S NGHM S dVZYH 1921919373 ONY 38713 NOIIVIOVH X NOIIOdIOHd HOY INVIHOdAI SIBNIV33 113348 SALVEUCHUONT AVHOVIU JILINIHOS 40 MOYN TEMAS 1 A 8r A A 8 70 0 H1 ADE AUC 00070 QOVEO HMSOGSCZT 00074 LGE Internal Use Only 36 Copyright O 2008 LG Electronics Inc All right reserved Only for training and service purposes LG Electronics Inc Jan 2009 P NO MFL49414510 Printed in Korea
14. 2 BSS mroga 24 PARAIL ES 8 5 9 0000 0000 E 25 sd b 1 207076 6 pala 29127222 435 2 m m lo o o Pa 9 lt B2 ms 0 Y le Ls Lula e Loe 000000006 AE mA 4 2H 15 400 7 6 E AN 22 Sus 9998 D V 4 e le Jefe D m 5533 2 1000 2 5 LaS3YMH o pre oso 8 135347 d1N 319 E 38 E 3 82 14 ole E ae lt 440 1 1 1010 qp lt 1 0 gt gt gt gt lt 4 DJO 01010 lt D U eats AU 2 lol 88 2 6 0 0 gt 21128 o OZ 42058 9 10121212 2 2 9 4 0 0 5 0 a o i fo fo TEOTH 5 O u E OJ A d N Nje 8 18197891 lt gt RR RR RR RR GR GB GR RR GA D ID DD OD OOD D DD D 0 D y SP 81552 08 8 214050850525888882 06858899
15. 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 connections 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 Remove the defective copper pattern with a sharp knife Remove at least 1 4 inch of copper to ensure that a h
16. G North Latin America http aic lgservice com Europe Africa http eic lgservice com LCD MONITOR TV CHASSIS LD84J MODEL M237WD M237WD PMJ CAUTION BEFORE SERVICING THE CHASSIS HEAD THE SAFETY PRECAUTIONS IN THIS MANUAL CONTENTS CONTENTS DEEE naai 2 PRECAUTIONS iia 3 SPECIFICATION coca 6 ADJUSTMENT INSTRUCTION 2 44 1 4741 2 12 TROUBLE SHOOTING smart atente ias 15 BLOCK DIAGRAM 24 DESCRIPION OF BLOCK DIAGRAM 25 EXPLODED VIEW 26 AAPP Copyright O 2009 LG Electronics Inc All right reserved 22 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 manufacturer 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 protects the technician from accidents resulting in per
17. 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 25cm 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 component 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 so
18. year 12 HDMI1 2 12 1 Input DTV For Video PC is not Supported ioni 16 3875 29976813000 7825 _ o HDVNRP _ Copyright O 2009 LG Electronics Inc All right reserved 10 LGE Internal Use Only Only for training and service purposes 11 2 EDID Data HDMI EDID Product ID 22253 HDMI1 and HDMI2 have the Same EDID 1 HDMH 1288 2568 MB 250 28 8 Co A NM 01 0505 68 E 050 0 1288 2568 Summam 12 50 ci B aL Summa 01 54 01 FO 26 53 di 3 Ab 11 33 B BF 01 11 FU 00 34 xls 00 E 01 14 1 11 ell 44 78 Jb 00 20 04 7 Bu 21 20 20 i Hr 39 20 20 i 10 00 20 20 40 38 30 00 20 hh H3 00 4E 00 40 FL 00 20 Ir a 01 30 n 00 00 01 01 25 20 40 3B ae 87 NA AA A A 1 x03 4 15 b je 48 por 1288 255 12 50 00 40 Summary 1 All data are HEXA 2 Adjustable Data Serial No week year ex when year 2008 CHECK SUM deferent along Serial No week year 01 54 01 FO 36 53 32 03 AS 01 00 11 33 00 01 11 FO 00 30 J3 1c 00 El 01 14 00 00 1 1 20 Af dd
19. 9 BSA gt 1 181 20 14 151 00 Foray T 00 011 5 lt 7 2 457513 OOF 7 19751 00 lt 10 lt 0 lt 0 lt gt gt gt gt gt gt 11 14181 3 13 4531 41141101 lt 0 WYP gt gt Dad Fi Ead is 2 2 2 5 dec 2 00 aTa yes 7 e ag 00 vom E 7 1 m Jn 1051 BE lt lt lt lt Ajajaj gt gt 01010141 110 gt gt gt gt 0 1 9 gt V p al lt i I x Pr tr O WE Martek wp 3109 95 2 Ma V BSAd AE 95 ESA OIL3N3H0S JHL 30 MEW TOBWAS HL NI SIN3NOdAOO IVOLLIHO SHI 351 38 51 03132395 54 1 LYHL 553 SI JI 9NIOIAH3S SOMVZVH YOOHS 7 21 19313 ONY 3071 NOTLYIOVY X NOIL3310Bd 804 INYV1HOdAI S3HnlV34 WIJ3dS S3IVHOdHOONI AVHOVIO 9113W3H98 5 30 gt 108445
20. 995008000 40 a 2 7 07186 sae ee I T 00 195 C3 T 9 5 CO 90 cede 939 910199 1S7AS N3A3 ae 2 VW 95 cen ZET SN yy cm X gsm HOV 90079 OF IVW AAT 95 000 X OFTHUVR C4 61VN 95 ig ww X erg IE X HOV 9 VN 55 _ Q HOVN S VN 14 41 98 66rd iv nea 2 96 BeTH Ie WW 8213 S 1619 177 99 9679 El UN MOI ins Ber 0 HOVN OST iecore want ES 22 01 0 2220 5 RAM 1 9723 wes digni 957 i in 705 22 257 5 TOTHV WOHd33 vas dM NOHd33 Sonat 097 nig Tid raa Id GOAV AE 670N9 697 ovos am 007 010149 797 0 3 69 071 0 89 AV NI OI0ONV wa gsn 9 V3OOA ASE T4 HnT0 0 087 Wee NOT H 1nonv gt 7171 gt 9 8773 WEANV an 0 91 S QNO NOINV
21. A mp A ees 4 1 2 F Wave form of 105 122 Wave form of R104 C121 Wave form of R119 C119 Copyright O 2009 LG Electronics Inc All right reserved 19 LGE Internal Use Only Only for training and service purposes 6 AV Video Trouble Shooting Check inpu t signal format Is it supported Check AV Ca ble S Video Cable f or damage or open conn ector Check signal R611 AV CVBS R625 R626 S Video Replace R611 R625 R626 Check signal RGB R116 R113 R114 Replace R1 16 R113 R114 C137 C134 C135 C137 C134 C135 IC101 has problem A A pe eee gt ee em Wave form of R625 S video Wave form of R611 CVBS Wave form of R626 S video Copyright O 2009 LG Electronics Inc All right reserved 20 Only for training and service purposes LGE Internal Use Only 7 HDMI Video Trouble Shooting Check input signal form at Is it supported Check HDMI Cable for damage or open conn ector Check JK801 JK802 for proper connection or Replace c onnector damage Check IC803 Out Voltage Level Replace IC803 3 3V Pin 6 Check EDID NVRAM Redownload EDID data or 801 802 Rep ace 1C801 1C802 Power amp 12C Signal 45 46 Check HD CP Key NVRAM 105 Power amp 12C Signal 5 6 Replace 105 Re
22. BOM 2 5 The receiver must be operated for about 20 minutes prior to the adjustment 4 General Specification 4 1 PC Specification Supported Sync Type Separate Sync Digital 2 Operating Frequency Analog Horizontal NE Digital Horizontal 30 83kHz uM 3 Resolution Analog Max 1920x1080 60Hz Digital 1920x1080 60Hz Recommand 1920x1080 60Hz Operating Condition Sync H V LED Wattage Power S W On On mode Blue 55W Max 450 ff Sleep mode On Off Power S W Off Off mode 0 7 Of Of MTBF 50 000 HRS with 90 Confidence level Using Altitude Using Altitude 5 000 m for Reliability 3 000m for FOS Copyright O 2009 LG Electronics Inc All right reserved 6 LGE Internal Use Only Only for training and service purposes 4 2 TV ET Receiving System ATSC 64 amp 256 QAM NTSC M USA ONLY Available Channel 1 VHF 02 13 2 UHF 14 69 3 DTV 02 69 4 01 135 5 CADTV 01 135 3 mavo 4 Manet NahAmka 2 ScreenSie Operating Environment 1 Temp 0 40 deg 2 Humidity 80 Storage Environment 1 Temp 20 60 deg 2 Humidity 0 90 96 5 Optical characteristic specification 5 1 Chroma amp Brightness Max Angle lt CR gt 10 gt 7070 8585 0 UpDow 6070 75 85 AS Luminance Luminance DVI or RGB cd m2 Stnadard 6500 Full White
23. Color coordinates is same with the one of module because this model does not adjust white balance 6 SET Optical Feature 6 1 PC Mode Measurement Condition Full white Standard 6500k gt Measure the black luminance after 30 seconds No Item Luminance cd m Remark Min Max 250 300 1000 1 DFC 30 000 1 6 2 AV Mode Measurement Condition Full white 100IRE Vivid Measure the black luminance after 30 seconds No Luminance cd m C R Min Remark Min RF AV COMPONENT HDMI 0 6 3 Dynamic CR Dynamic CR Working Condition Full Black Pattern All Black No pattern MSPG Patterns 2 signal in D sub DVI M237WD PMJ 24000 1 30000 1 For Checking Black Luminance wait for over 1 minute 7 Mechanical specification A 1 Product Fwy Pater Packing 45 E 2 Produc CE El PS E 2 Palletizing XD 271 2 19922 1084 _______ Tilt Degree ST5degree Tto 08851122 General Refer to Standard of LG 56 G1 1020 Copyright O 2009 LG Electronics Inc All right reserved 8 LGE Internal Use Only Only for training and service purposes 8 Component Video Input Y Specification No Remark Resolution H freq kHz V freq Hz 6 wmm 4m 909 HN S emo HOWW P wm uo 10 RGB DVI 10 1 Input PC 2 64
24. Inc All right 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 5K 10watt resistor in parallel with a 0 15uF 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 5mA 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 0 15uF exposed METALLIC PARTS AM 1 5 10 When 25A 15 impressed between Earth 2nd Ground for 1 second Resistance must be less than 0 1 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 unforeseen circumstances create conflict between
25. Signal Table 23 AUTO_INPUTCHANGE aaa Da a Sof 128 Bytes 5 2 2 Command Set EEPROM READ E7 o O Page 0 7F Read 80 oPage Read o 0 7F Read ET _ 80 tPage 80 FF Read E o 0 7F Read EX _ 80 80 FF Read Las o 3 Page 0 7F Read 8 so 80 FF Read use To read the appointment Address of E Copyright O 2009 LG Electronics Inc All right reserved Only for training and service purposes 5 3 Data Write 5 3 1 Signal Table E LEN 84h Byte CMD 8Eh ADH Slave Address 0 A2 4 A8 Not 00h Reserved by Buffer to 2 ADL E PROM Sub Address 00 FF Data Write data 5 3 2 Command Set 1 EEPROM WRITE 16 Byte Write 2 n byte Write use EDID write 16 byte by 16 byte 8 order 128 byte write TO 00 7F of EEPROM Page A4 e FOS Default write 16 mode HFh HFI VF STD HP VP Clk CIkPh PhFine write Random Data write write the appointment Address of E2PROM data 5 4 VRAM Read Send CMD 70h to read Video RAM value from MICOM And save its value to 128 Bytes Buffer Common Buffer for the use of EDID Delay 500ms Time to Wait and Read Video RAM from MICOM transmitted the contents of MICOM s 128 bytes Buffer to PC 128th Data is the CheckSum of 127 bytes data That s OK if the value of adding 128 bytes Data is Zer
26. gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt gt 0 5 10 Nfi Oje e e feje je 0 O 0 pjajaj me AA EE eeu D g N m je arr o UE x 9 E sils gt 5 gt 2 5 5 5 5 gt gt y V9 10 QQAV E VIAQ OOAV AG g gt at 0 An 12 TOTX TES veto 9 aE 19 3 va2n avia 708 vanas 18 VOS 0000 8 ANN 06 0 gt T HLOH 8 Ixe SN 7X179 NTXH zig Bl dox 71378 211 c 3 0X18 NOXH LT3v 8 c 2HP19XL LT9v 8 NOXH LT9V 8 Y V e z steels 8 5 y 1439 LGE Internal Use Only 27 Copyright O 2008 LG Electronics Inc All right reserved Only for training and service purposes DDR TSSA NT 18 HOVWN env 90 WE wo ZA DO anp 0 m 1183 2 SSA QQAN AD GF 9 23 25090 gt n M EN A05 OSsA 0
27. 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 easily 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 damage 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 Alternatively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent potential shock reasons prior to applying power to the Copyright O 2009 LG Electronics Inc All right reserved Only for training a
28. 0 480 31 469 59 94 25 175 Input 848x480 60Hz 852 480 60 2 N 10 3 RGB EDID Data Analog EDID_Product ID 22251 FF FF FF o FF FF FF 1 EB m um D i2 33 7 EA AB Ad 56 4B 9D gt 12 54 5 eB 0 51 B n im mn m om um 5 20 3 4D 20 15 00 FO HE 11 FD 4B 1E 11 OA 2 37 14 e 20 20 FC 00 ell e ell ell ell 20 el ell Bl 11 12 13 14 Copyright O 2009 LG Electronics Inc All right reserved 9 LGE Internal Use Only Only for training and service purposes DVI Digital EDID_Product ID 22252 mo FF FF FF FF FF 00 1E EC 01 01 01 01 0 01 01 12 01 03 B 33 lt 76 Fe co 4 5 45 SD 25 EEX 0502 12 50 Bt 01 dn 91 r 40 00 El 4r 01 Cu 01 01 01 18 16 ab ru 39 40 30 el ons 35 1 el 39 Jl 30 ET 40 Jh FD 11 IL 00 FL 38 4E 1E 51 11 00 ell ell eti ell 00 00 FC 00 4p 32 15 E 57 44 et 0 D Bl Adjustable Data Serial No Input the S N at Total Assembly line week year ex when year 2006 input 10 CHECK SUM deferent along Serial No week
29. 00 0x40 COMPONENT cf 0x10 TV 0x20 AV 0x40 COMPONENT 0x60 RGB 0x90 HDMI e Signal equipment displays at SD Mode Impress Resolution 480i MODEL 209in Pattern Generator SD Mode PATTERN 08in Pattern Generator MSPG 925 SERISE Signal equipment displays at HD Mode Impress Resolution 1080i MODEL 223in Pattern Generator HD Mode PATTERN 08in Pattern Generator MSPG 925 SERISE Adjustment pattern COMPONENT e Adjust by commanding AUTO COLOR ADJUST OxF1 0x00 0x02 instruction 3 2 1 2 Confirmation e We confirm whether 0xC8 1080i address of EEPROM OxA2 is or not e f 0xC8 1080i address of EEPROM 2 isn t we adjust once more We can confirm the ADC values from 0xC2 1080i addresses in a page 2 3 2 Function Check 3 2 1 Check display and sound Check Input and Signal items cf work instructions 1 TV 2 AV CVBS S Video 3 COMPONENT 10801 4 RGB PC 1680X1050 960 2 5 HDMI 6 PC Audio In and H P Out Display and Sound check is executed by Remote controller Copyright O 2009 LG Electronics Inc All right reserved Only for training and service purposes lt 13 4 Total Assembly line process 4 1 Adjustment Preparation e Above 30 minutes H run in RF no signal 15 Pin D Sub Connector for communication not including VGA signal is connected to AUTO W B EQUIPMENT 4 2 Check coordinate of 9300K Set Input mode to RGB e Set T
30. 1001 Variance 750 mna ES Contrast Ratio 1000 Ful White Ful black Color Coordinates 0 313 CIE 1931 0 329 0 336 0 03 Stnadard 6500K TOi 0 295 Full White 100IRE 0 614 Ss 0 146 Optical Test Condition Surrounding Brightness Level dark Surrounding Temperature topo DC warm up Time 30 Min Contrast Brightness Outgoing condition Incase of Vivid Mode high level saturation may be occurred Check gray linearity at standard mode Active area Active area of LCD PANEL is in bezel of cabinet Interval between active area and bezel lt 1 0 C D 1 0 mm A Interval between left of active area and bezel B Interval between right of active area and bezel C Interval between top of active area and bezel D Interval between bottom of active area and bezel Active Area Bezel Copyright O 2009 LG Electronics Inc All right reserved LGE Internal Use Only Only for training and service purposes 5 2 Chroma PSM PC Mode Standard AV Mode Vivid The W B Tolerance 15 0 002 for Adjustment but for 0 015 9300K AV1 2 3 Component HDMI 8000K 0 203 0 305 0 307 Cool Medium Warm 85IRE Warm 0 311 0 313 0 315 6500 0 327 0 329 0 331 4 6500k 0 283 0 313 0 343 PC Mode 0 299 0 329 0 359 RGB DVI 0 253 0 283 0 313 Stnadard Wy 6500K 9300K Full White 100IRE The spec range of
31. 1d0 300005 799 1587 E 55 0 5497 250 e TOW 10015317 002 140 r EE Sra C754 17 1 Ccviva 8 P 1959 4 Cnm v OS Ind 2 5 00 el 1d0 A 195 0 39000 0 anz VEZ 6999 0 10H 1 vLgor 190 V LS dOQA AE C 01anv eaot3sc 7090 7 aaAv7ny AE E 7 8999 2995 ozy 302 0 0 a 0dGcOHSH 2090 SSAV UO siued STUL V 15 9 LGE Internal Use Only 34 Copyright O 2008 LG Electronics Inc All right reserved Only for training and service purposes LED HP HH 0S A amp RHZ Z US amp eu adhWce rtda V 3 24 19 510809210299 7027 gt 1307 3H 1 3H 3108095 00 15 A834 dT NIEOB E 00 1 02 25010 SE 2062 HIOOEQCSUJ ADE H IS9OEJC amp 503J U20 V MO TIAA C NOFBBNV 037 N AN ta 031 DUVEQ SMGU2 202d JIIJA3HUS AHL 30 XENN NI SINANDAWDS 903 035 38 SiBVd 09135955 E3Hhly JANVA VILNASSA SI JI 9NIJIAHJS
32. 2 0 8 INTE C T dS ott fi O T Ie 2097 OS My NS 0099 H dS lt 3 i 1 02 QN9d a 5 345 58 c 09 0N9d E 52 dn 271 0 8091 669 46 C 0 qe c 9 00Ad 07158 _ 87158 T dS lt voco JnEEO 0 aaAd 0 5 100 HSV dS 9082 Se T 1 5 N9d c HV N9d 7795 lt E Tajo 0 XX XX espa 2692 692 0699 ODA y Ny AE E lt 8 V dAV AE E E 6554 SSAV s3eJedas m T 7 4 CJ CJ 6 0 85 1 cE p lt 10831 C 310A CIN9 Be 37470 0 5 anjo oL AQ 4001 15415 Gc 13536 0899 OLL3A3HOS JHL 30 08NAS 3HL NI SININOANO 17911199 SHI 451 3d SIHVd 03143345 SIBMIVANNYA ANO 3553 SI JI 9NIOIAd3S N3HM SQHVZVH 500HS 17916193719 ONY 38713 NOTIYIOV8 X 11531089 HOJ INVLHOdWI 53801933 1719395 SEIS PANE TT _ AQv 34 ns SIHI 40 uv JOENAS dOd dAv V 157 4 m T V O0A0 Ny AE E dn dod dAV AGE T
33. 64 GPIO100 10 w 5V tolerant General Purpose Input Output driving strength _165 GPI099 0 wisi tolerant General Purpose Input Output 4mA driving strength a 166 98 LO w 5V tolerant General Purpose Input Output driving strength 167 097 w 5V tolerant General Purpose Input Output 4mA driving strength OH 251158 DM Analog hO USBInvertingDatalnputOutput USB DM 252 usSB DP Analog lO 056 Hon inverting Data Input Output USB DP J Copyright O 2009 LG Electronics Inc All right reserved 23 LGE Internal Use Only Only for training and service purposes BLOCK DIAGRAM 33O NO Y3MOd 119 13NVd MANNL AS MLO ANI 19 29 145 gt v 3 1YVd Scl 13838 MS ALAW LNO 1128901 MI9VA17 le olwA7 S 0 V L VON YOIZECEXVIN 211 JIS NIVN NIVW Al______ NI 13 O3GI S O3GI NI RE NIHI LHVOS 4 gouWu gad Kal NIA OS 114 VOS Zo 50 oll SAH 89M 900 QdH L3G AS
34. 8 LG Electronics Inc All right reserved Only for training and service purposes LVDS CONTROL OLL343H0S JHL 30 10845 NI SINSNOdW02 IVITLTHO JHL 0 0351 38 519 03139395 S3unlVJONVA ANO 1 IVI1N3SS3 SI JI 9NIOIAU3S N3HM 50 7 20 5 1421812313 CNY 38113 NOTIVIOVYH X 11531049 803 INVLHOdWI 53801 34 1719395 S3IVHOdHOONI 9 211343H98 30 108 5 FHL 2IN3 0N3 2N 410210 602 02 8 IN 11 amp N d02 0 602702 87N Mayas ON 1200 siugsuOUduoj saul 30118 34111 p H3BAv 7037 E C ng031 17 ALW S06E 157 cna 171 V 15 ZOED 90 20 0 HISOEJESQJ AQE 5 ADE HLIOEJESOSO AQE HL9IDEJESOI HLOGEJESOD AQY 3d AQV 3H AGE HL90E9ESO9 AQE 3 09vd97 CERO uy 3108082028 SEI e Gu 031 11080820298 VOE a 378 031 310809270298 ce OD 1inn H dH 9 aao 7 3108082 0298 EOE gt 100 1 4 3108082 0298 TOE 1 08082 0298 E B1 55HS BUJ AS 19803 509 19 03 03 C pas 17 gt a agy 171 C 2 05 St 1S7dQ0A AE E 282 002MAS 20Ed A 1
35. AI S38N1V33 119395 S3IVHOdHOONI 211343H95 SIHI JO 108448 HL E 7573 98 yos 2572 CR hee 4007Z5yH 75 E 0 236 lt 1 5 lt ZaM Had aya a007 d Wispe 718 m lt lt 0 HOYW dv 0Pv 197 HOWN c eh 0 xavN ova C H007 7 va ETIN C 59 lt 1 00775 Svu CL H007 2579 572 C H007 Z3M 3M N ON 5007 om lt s00 0028 FN 10a 5 27055 m YE IVLVON n lt 9 B VLVOA B VLVON C 00AR7AB 1 I Y d1 32291 OOCII E 0 V LVON VE O VLVON LGE Internal Use Only 28 Copyright O 2008 LG Electronics Inc All right reserved Only for training and service purposes TUNER DEMODULELATOR E n n 1 hou 1 i 1 1 1 1 10 7 12 0181 23 2 JU Spee 7 anpp dl 05 95 22 MEN 907 E E espa V
36. Error Check connect computer jig and set 3 Click Connect tab If display Can t Check connect computer jig and set H MStar ISP Utility V4 0 8 1 9 Device Load Read Auto Blank Program Verify Erase 12 Pin Definition SD in SCL in SDA out SEL out E2PROM Device Setting Communication Setting Speed 99 4 Port Type m Roughly Speed 138 KHz Base Addr O0x03BC SPI Settin 2X Auto Detect OK 3 v Reverse High USE SPI v pin 1 switch LU ART I2c 3 Pull all Pin High Speed 150 4 4 TIG X Apply Elapsed Time I2C Printer 138KHz 4 Click Read tab and then load download file XXXX bin by clicking Read H MStar ISP Utility V4 0 8 1 2 8 i d uu 5 Device Load i Auto Blank Program Verify Erase Config Connect Dis Con File Status Unused Bytes Start Addr 0x00 End Addr Batch File Elapsed Time 2 Printer 138KHz Copyright O 2009 LG Electronics Inc All right reserved i12 Only for training and service purposes 5 Click Auto tab and set as below 6 Click Run 7 After downloading check OK message MStar ISP Utility V4 0 8 1 9 9 SS 25 P E 5 ss Device Load Read Auto Blank Program Verify Erase Config Connect Dis Con ReConnect v Blank 7 Y Read File Prog
37. VC remocon Red LED are blinked alternatively And then Automatically turn off Must not AC power OFF during blinking 4 8 Internal pressure Confirm whether is normal or not when between power board s ac block and GND is impacked on 1 5kV dc or 2 2kV dc for one second LGE Internal Use Only 5 Adjustment Command 5 1 Adjustment Commands LEMGTH 84 1 eo oo Joo Factoymodeon_ 0000 2 FACTORYOFF E200 Joo Factory mode of 3 EEPROMALLINT E4 00 oo 5 EEPROMRead 7 oo oo 000000 5 EEPROM 00 Data EEPROM Write by some values COLOR SAVE R G B cutoff p Drive Contrast Bright H POSITION o0 00 100 POSITION 00 100 They have different range fae foo mode FOS Adjustment 10 PHASE 92 00 00 100 11 RDRIVE 1 00 00 6 G DRIVE 00 00 FF Drive adusiment 13 DRIVE 1A 00 00 14 CUTOFF 8 00 00 7 0 G CUTOFF 82 00 00 7 Offset adjustment B CUTOFF 84 00 00 7F BRIGHT 10 00 00 3F Bright adjustment 12 CONTRAST 00 64 Luminance adjustment AUTO COLOR ADJUST 02 Auto COLOR Adjustment CHANGE COLOR TEMP 0 1 2 3 1 NORMAL Factory mode off 22 FACTORY DEFAULT amp ll SWis 1 amp Input change to TV TV AV2 4 0 1 2 4 Component RGB DVI HDMI 5 2 DATA READ 5 2 1
38. aa aa 75 CET mm PPPPPP PWD o o z z z z z x 2o 925908 lt gt 5 gt gt gt lt gt 99 oleja 9 rr 0 0 i NIN loo LU 51315151515 5 01 zjoje gt SIS 1 191 1 1 16 10 cic z D 1 44 1 1 gt gt i epa Zr D Fo e 270 8 QOA AS 2 V 5 17 gt V HOO QOA AS 2 5 JHL 30 10815 FHL NI SINANOdWO9 1211189 JHL 350 38 18 9 03159395 SI8NLVIANVW A INO LVHL IVIIN3SS3 SI JI 5 NAHM 50 90HS 92311194 13 ANY 30 114 NOII9310Ud INVIBOdNI SI8NIV33 1719395 5 1 800800 1 OILJA3HOS SIHL 40 TORWAS zz Sf a Ol 0 T WMd 51008 88 518 5 Bus xD zu db 8 2835082 gc BT bh 8 O 14 0191 I a eee ECE RARE GESERE past d m Pro 3 1 1 move 88 49925 8 8815 Cas o 1222575 COWI wM
39. azardous 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 connected 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 without notice for improvement 1 Application Range 3 Test method 1 This spec sheet is applied all of the LCD TV with LD84J 3 1 Performance chassis LGE TV test method followed 2 Not included spec and each product spec in this spec sheet 3 2 Demanded other specification apply correspondingly to the following each country standard Safety UL CSA IEC specification and requirement of Buyer FCC ICES IEC specification 2 Specification Each part is tested as below without special appointment 1 Temperature 20 5 2 Relative Humidity 651096 Power Voltage Standard input voltage 100 240 950 60 2 Standard Voltage of each product is marked by models 2 4 Specification and performance of each parts are followed each drawing and specification by part number in accordance with
40. emperature 9300K e Adjust 0 285 0 005 y 0 293 0 005 9300 Full white MSPG series Pattern 4 4 3 Check color coordinate of 6500 Set Input mode to RGB e Set Temperature 6500K e Adjust 0 31340 005 y 0 329 0 005 6500 K Full white MSPG series Pattern 4 4 4 DPM operation confirmation Only Apply for MNT Model Check if Power LED Color and Power Consumption operate as standard Set Input to RGB and connect D sub cable to set e Measurement Condition 100 240 950 60 2 Confirm DPM operation at the state of screen without Signal 4 5 DDC EDID Write Model Name M237WD PMyJ Connect D sub Signal Cable to D Sub Jack Connect DVI Signal Cable to DVI Jack Connect HDMI1 2 Signal Cable to HDMI1 2 Jack e Write EDID DATA to EEPROM 24C02 by using DDC2B protocol Check whether written EDID data is correct or not refer to Product spec 4 6 HDCP High Bandwidth Digital Contents Protection SETTING Connect D sub Signal Cable to D Sub Jack Input HDCP key with HDCP key in program HDCP Key value is stored on EEPROM AT24C512 which is 80 1 addresses of 0xA0 0xA2 page AC off on and on HDCP button of MSPG925 and confirm whether picture is displayed or not of using MSPG925 HDCP Key value is different among the sets 4 7 Outgoing condition Configuration After all function test press IN STOP Key by SVC Remote controller And Make Ship Condition When pressing IN STOP key by S
41. ice 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 without permission of manufacturer Copyright O 2009 LG Electronics Inc All right reserved 26 LGE Internal Use Only Only for training and service purposes SCHEMATIC DIAGRAM MAIN 031 cor lt 007 60149 oo 860195 99 dicen 2 vente 297 12 FE 0 VLWON CO sea C risp e 3NT 0 d ireivivan 04 ios ivavon 1 ez igzivivan 527 Be vivan 727 ze vivan 827 192 927 se vivan 827 ivzivivow 627 Le uon aov 18 _ 297 ve v1von 02 1 797 ter vivan 987 vivos 99r Sa 87 re wen 887 19 1 1 067 597 11 AL y ME 4 7 10 145 7 7195 4 ru e u
42. lder with a small wire bristle brush LGE Internal Use Only IC Remove Replacement Some chassis circuit boards have slotted holes oblong through which the leads are inserted and then bent flat against the circuit 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 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 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 plier
43. nd service purposes unit under test 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 exposure of the assembly Use only grounded tip soldering iron to solder or unsolder ES devices Use only an anti static type solder removal device Some solder removal devices not classified as anti static can generate electrical charges sufficient to damage ES devices Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ES devices 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 electrically shorted together by conductive foam aluminum foil or comparable conductive material 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 and observe all other safety precautions Minimize bodily motions when handling unpackaged replacement 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 sufficient to damage an ES device
44. o Datat28 A CS NA LGE Internal Use Only TROUBLESHOOTING 1 Power Up Boot Fail Trouble Shooting Check Pow er con nector OK Check Q702 Outp ut Voltage Level 5V Replace Q702 Y Check 705 82 Pin Replace IC 705 amp Voltage Level 3 3V Recheck Y Check X101 Clock N Replace X 101 12MHz Y Check P700 All Voltage Level 5V 15V Replace IC 106 Flash Memory Wave form of X101 Copyright O 2009 LG Electronics Inc All right reserved 15 LGE Internal Use Only Only for training and service purposes 2 No OSD Trouble Shooting Check P70 0 9 Check GPIO Path INV_ON high Refer to Appe ndix 1 1 Check Po wer Board 15V 2 Check Q702 Output voltage 5V gt 2 3 Check P302 1 2 3 Heplace Check P302 8 TXEC 9 TXEC IC101 has problem 20 21 TXOC Check L VDS Cable for damage or open Replace Cable conductors Check L CD Module Control board Refer to Module CAS Copyright 2009 LG Electronics Inc All right reserved 16 LGE Internal Use Only Only for training and service purposes 3 Digital TV Video Trouble Shooting Check RF Ca ble Y Check Tu ner 5V Power amp Q707 5V Y Check L D400 color Bad Tun er Replace Tuner Yellow none Replace Q7 07 None Check T P Clock Data Sync N 8440 R441 R442 Maybe Tun er TU400 has problems Check Demod ulator Inp
45. place Ms tar IC101 Copyright O 2009 LG Electronics Inc All right reserved 221 8 LGE Internal Use Only Only for training and service purposes 8 All Source Audio Trouble Shooting Make sure yo u can t hear any audio and Device sup port the au dio sig nal norm ally Check Speaker and it s wire con nectio n P500 Replace co nnector or Speaker the resistance Check 15V From Po wer board P700 Pin 1 2 Replace P ower Board or Check And Check Aud io Amp Pow er 12V L511 501 Pin 2 3 34 35 40 41 44 45 Check Sig nal from 501 Repl 502 1503 1504 1505 Check Sig nal from 1 101 Repl IC 101 R130 R131 1021 R1022 eplace IC 10 Copyright O 2009 LG Electronics Inc All right reserved a 2 LGE Internal Use Only Only for training and service purposes Appendix 1 GPIO Path a DATA SHEET PIH Type FUHCTIOH E 5 20 N 5W tolerant General Purpose Input Output 4m driving strength T6 GP10021 LO 5W tolerant General Purpose Input Output 4m driving strength 22 __ Purpose Input Output driving strength 780023 wisW tolerant General Purpose Input Output driving strength ____ 25 ___ w 5V tolerant General Purpose Input Output 4mA driving strength UO w General Purpose Input Outp
46. ram Checksum v Verify v Exit ISB v Erase Device File Area Erase Area First E 2 5 71 Run _ 4_ Partial Erase_ 1 Elapsed Time 2 Printer 138KHz 3 1 ADC Process 3 1 1 PC input ADC 3 1 1 1 Auto RGB Gain Offset Adjustment Convert to PC in Input source 12 COMMAND OxFA SELECT 0 00 0x60 RGB cf 0 10 0 20 0 40 0 60 0x90 HDMI Signal equipment displays Output Voltage 700 mVp p Impress Resolution XGA 1024 768 Y 60Hz Model 60 Pattern Generator Pattern 29 in Pattern Generator MSPG 925 SERISE gray pattern that left amp right is black and center is white signal Refer below picture Adjustment pattern PC Adjust by commanding AUTO COLOR ADJUST OxF1 0x00 0x02 instruction 3 1 1 2 Confirmation We confirm whether OxB6 RGB address of EEPROM 2 is not OxB6 RGB address of EEPROM 0xB2 isn t we adjust once more We can confirm the ADC values from 0 0 OxB5 RGB addresses in a page 2 Manual ADC process using Service Remocon After enter Service Mode by pushing INSTART key execute Auto RGB by pushing P key at Auto RGP LGE Internal Use Only 3 2 1 COMPONENT input ADC 3 2 1 1Component Gain Offset Adjustment Convert to Component in Input source 12 COMMAND 0xF4 SELECT_INPUT 0x
47. s 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 possible 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 3 Solder the connections CAUTION Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures Copyright O 2009 LG Electronics Inc All right reserved Only for training and service purposes
48. sonal 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 1W keep the resistor 10mm 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 and 5 2 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 O 2009 LG Electronics
49. the following servicing precautions and any of the safety precautions on page 3 of this publication always follow the safety precautions 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 Disconnecting or reconnecting any receiver electrical plug or other electrical connection 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 explosion hazard b 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 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 applicator 1096 by volume Acetone and 9096 by volume isopropyl alcohol 9096 9996 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
50. ut driving strength 82 GPlO27 ____ UO wi5W tolerant General Purpose Input Output driving strength 83 6PIO28 0 w 5V tolerant General Purpose Input Output driving strength 5 0 441125 IH ws Word Select Input 100 GPI045 7125 Audio Bit Clock Input HDMI 5 1 103 Output Audio Output 4m driving strength 8 110 ___ welSWtolerant __ General Purpose Input Output 4mA driving strength 1 11 6 065 UO w V tolerant___ General Purpose Input Output driving strength Sw ___112 6 1064___ 110 w 5V tolerant _ General Purpose Input Output driving strength __ M3 GPIO63___ 0 w SV tolerant__ General Purpose Input Output driving strength SAR Low Speed ADC Input 2 ux AZOSAR2____ Analogimput ____ General Purpose InputiOutput 2 SAR Low Speed ADC Input 3 ____ 12 Analoginput General Purpose Input Output 11 WP FLASH 135 Lva P LVDS A Link Channel 4 Positive Data Output _ Jouput devas a Link Channel 4 Negative Data Output 1
51. ut Clock Replace X400 X400 25 2 Check IC10 1 LVDS output 8 TXEC 9 TXEC Replace 101 has problems 20 TXOC 21 TXOC Check L CD Module Control board Refer to Mo dule CAS Spec Ceres Sd oe e Wave form of 400 Copyright O 2009 LG Electronics Inc All right reserved x LGE Internal Use Only Only for training and service purposes 4 Component Video Trouble Shooting Check inpu t signal format Is it supported Y Check Compo nent Cab le Y Check J K602 Replace JK602 or Che ck Divice Y Check signal Check R10 7 R109 R112 C124 C126 C129 C124 C126 C129 IC101 has Wave form of Comp Pb eee A Gee A DR A A Wave form of Comp Y pas po A es vue As A A A reme Wave form af C124 Wave form of C126 Wave form of C129 Copyright 2009 LG Electronics Inc All right reserved 18 LGE Internal Use Only Only for training and service purposes 5 RGB Video Trouble Shooting Check input signal format Is it supported Check RGB Cable connector for damage Check JK607 Replace JK607 Y Check signal Hsync Vsync R673 R674 Replace R6 73 R674 Check signal HGB Replace R119 R104 R105 a A O 121 122 119 C121 C122 C119 IC101 has problem m ju em as mer s a a PA Wave form of R673 Vsync Wave form of R673 Vsync ae pren
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