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LCD MONITOR TV SERVICE MANUAL

1. P700 1703 SMAW200 11 DE p hi 1 gt 15V_AMP 500 ge Pe olm i i we i V T JS RSRO25P03 PV Er t gt E psi CH3216PASO1E PANEL ohm ri 4 AET gt C704 729 Sv SA Ta mi Zr los sg ng 2m Zut de lm ov 12v LCD 1 T di 0G die Du 2049 2m SNS g t GH Ohr gt P_15V L L GH oi Ee GND APOL21N 3 3TRE1 C E bie V PANEL_DN 2 B uzog GND F 8 HT1C3904 T112 E DV a gt P_5V 5V 5V_M x a C702 EX APLLi7EG 13 GND R703 100 zw os VD gt AVDD1 25V gy d OLP READY z Zog L RS o DuF u SOV 3 n TET B711 Inverter ON W i NAA pen 4 AED 50V PWM_Dam CH DISP_EN R701 i EDIM d A Dim 9 10703 tT gi mm APL117EG 13 ER C706 2 2K MAX 400mA E D 1uF HEADY Bs IL gt SVM CM M IN EE gt 2 SY 2 I I ADJ GND i C756 Joe W Za zur 0 1uF 1QuF U Gm ji 50V E 16V a A ino NA Pe eae a L701 4 re Dron L G714 lov T IC701 We T gur T 50V tov me TPS65231A20CAA a728 READY lep 4 7K Cy3o UE ay BG T2C_ADD x C731 14 R709 subs tour VINBO VMDN2 Sei ce an z POS Eo A3 Cas vev VMON1 E Cum E 10v BIN B NBOR NHOT 10007 T 9569 E Leo FB2 USBFLG1 VCTAL k CMP2 USBDUT2 Ee VDD3 3V 4 1 Levis T C737 C706 yY euim FM USB N C704 C705 C708 C711 1000pF POWEH SW EN BCK2 VINU Q 4uF 50V CB3218PA5041E C773 774 B dur C703 TS m 100pF 50V C gt t CSL e gt p sy OuF
2. Browse LJ Backup USB Config H RS 232 Usb C Usb C Usb gt MT1818 C MT1888 flashle C RS2322MT1818 Dram Flash Iw Verify BlankCheck High Speed Iw USB to UART Bridge Controller V ShakeHand Custom Burning Address o HEX Custom Burning Length e000000 HEX Direct Control Clear MSG EDIATEK 4 Read and write bin file Click 1 Read tab and then load download file XXXX bin by clicking Read i amp MtkTool M18223 Flash Upgrade Z Port Baud Rate Window Operation Help MT8223 Comat z 11520 4 ee 2l A Se Load Bin file E Backup file backup bin Browse bs LJ Backup USB Config RS 232 C Usb gt MT1818 C MT1888 flashless C RS23252MT1818 Usb C Usb Dram Flash Iw Verify BlankCheck High Speed jw USB to UART Bridge Controller jw ShakeHand Custom Burning Address o HEX Custom Burning Length 3E0000 HEX Direct Control Clear MSG EDIATEK 5 Click Auto 2 tab and set as below MtkTool MT8223 Hash Upgrade wrs223 x comat 15200 2 ms e Load Bin file p work M41A4 tool new_tool w6606_r D Le ay ET Check Sum Backup file backup bin Browse 7 Backup CG R5 232 C Usb gt MT1818 C Usb gt Dram C M118 shles Usb gt Flash C R5232 Ye Port Baud Rate Window Operation Help USB Config
3. 8 ii 11233 i g EI v V v Ca mi zt tr zt Tt T V v Y Es s 28 amp el v mu m x g 8 ee ol a d 8 2 8 8 amp 8 Ei E Man n N ES s e e S B B8 fel Ela bale s B S RESET II S go PASS Be ge x aa Ses be a ICBU1 MM i 2 RBOB AZ7027ATRE1 MAX 3 9V CHIP SPEC S gt HWRESET HWRESET H Dt ees HH D DSUB_VSYNC DSUBLHSYNC OSUB B DSUB_G OSUB_A CVBS VIN POWER_SH Q601 2Sc38758lALYI 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 NANUFATURES SPECFIED PARTS BE USED FOR IHE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC GFlectronics MODEL leaxes071101 6 DATE 2010712705 1G ELECTRONICS BLOCK meee SHEET 5 5 LGE Internal Use Only ice purposes ining and servi Copyright 2011 LG Electronics Inc All right reserved Only for tra PDF created with pdfFactory Pro trial version pdffactory com
4. IHE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC LGElectronics MODEL l EAxess71 0 e DRTE 2010712709 LG ELECTRONICS BLOCK amp owe SHEET s s LGE Intemal Use Only ice purposes ining and servi Copyright 2011 LG Electronics Inc All right reserved Only for tra PDF created with pdfFactory Pro trial version pdffactory com P305 19507WS 03L Yo Y xau n my Dx CL ma woo LL LL 5 SR C31 gt gt o E E d en m a oA L SS 50V oS e ES 2 eo 217 Ed e GIS av m Ol 3 4 41 3 4 01 3 4 B MODE Se BOL MARK 0 S SCHEMETIC DIAGRA CORPORATES ATURES IMPORTANT FOR PROTECTION FROM X RADIATION CTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET MODEL EAX64140801 DATE 2 nE CAL COMPONENTS IN ranma ecu D se eemo BL e THT T 7 TE lt I LGE Internal Use Only PDF created with pdfFactory Pro trial version www pdffactory com Copyright 2011 LG Electronics Inc All ri
5. Ee R If is under 4 8V at L710 Check open and short Of line between L710 and P201 heck waveform at signa Check d short line of P201 Clock 10 11 22 23 Of li uh iic ue Data 8 9 12 13 15 16 18 19 20 dee 21 25 26 27 28 29 30 Or Check LVDS cable have damage Another is change IC600 Change module WAVEFORMS gem xo ex gem xo 10 11 22 23Pin of P201 8 8 9 12 13 15 16 18 19 20 21 Clock line 25 26 2 28 29 30Pin or P201 Data Line Copyright 2011 LG Electronics Inc All right reserved 19 LGE Internal Use Only Only for training and service purposes 4 Abnormal screen TV Main PCBA Abnormal screen TV insult RF cable tight and then Cable nut screw tight Put into RF cable completely If 4 9V is not at plus pin of L700 check l It is over 3V at 20pin of IC701 Is SV at 2 6pin of TU401 if itis not Check Line between IC701 and C600 is open or short Another is change IC701 Check Line between TUAO1 and IC600 is open or short Another is change IC600 or TU401 Is I2C waveform at 4 5pin of TU401 Is IF waveform at 67 68 pin of IC600 Change Main PCBA WAVEFORMS Check Line between TU401 and IC600 is open or short Another is change IC600 or TU401 APin of TU401 SCL 5Pin of TU401 SDA 67 68pin of IC600 Copyright O 2011 LG Electronics Inc All right reserved 20 LGE Internal Use Only Only for training and service purposes 5 Abnormal screen AV
6. 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 is opropyl alcohol 9095 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 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 integr
7. 2 olo ojoo ag Go Of GJ go a Go o y 8 e N A ae EI crc x FE Eli El Ee Se E KY El Rl A Ql Ql EI f 2 f f E ELF ES 2 gt E e 9 85 E e s 5M en ce ST 2 dom S S e SG SE p H SS E e A 6 n SERIAL FLASH 4M nw S S 5 S sl SiS LS sls sLststslststslslsl es ea L 4133 3 33 213232 123322223225 Bf 85 jg EB BESSER g E E E B E E g ge I C603 Ig T IE S E 10K gae MX25L3206EM2I 12G n u o ux WO Ce I oO Bs L eO gt 2 lt DU x gt uU a lo ol J le D i gm QU m au mM m c MIL gt gt wo gt 20 i i a kal a i m 1 vY z H O zion O el O0 oilol no u SPI CLK n lolaG zin zia zin ziniO zialzia zin ziniO o amp o amp alalo ulOo olo w eqdu Oolomim oloj wusuuwu OlO0omim ooOJlo ono0 oO Q QigOIo oOG oIloQ oilonoj uljutlu wulu wlw wlw wula gt ja a alal eyo SPI DO ES BESEA pp 100 PANEL_ON SORV_4 4 amp EVDS PWR CTRI DEn 4 7K Spn 2 5V Tre To ANA XSTRAP IN D SDRV 2 s5 BL ON OFF To wr To oF 2 IPN BL_D EE PEE YCCK 1 3 4 IMMING T un PROM AQ VOOR AAV Dia Zeg SORV_3 U4RX V003 3V TAE 4 3 BSS yA COSE IC802 S m VCCK 2 5 2 UtTX ET cd AT24C640 SSHM T E a B C663 SE USB DM 5 4 S DO EE ax Th Des 2m Felt USB_DP 7 ao S DI USB pP L 3 C PIDI L R AVDD3V3 USB lo 89 5 CLK rak EEPROM WP MENU lee P SB_VAT 5 DE pu US g 8B SL m AR AIN SUI Ru X CB 40 a7 DVDD3V3IO 1 Gre ee OV VIF 2 z I ald
8. KEN WA k l C537 To 33uF bcs ia 3 3V DVDD T H ds DVSS 4 PVDD B 1 on So aur i To A D VR_DIG a BST_B R516 SE TAS5708PHPR S T PDN BST C IC502 los Loews LRCLK PVOD_C_2 C514 4 7uF e 1000pF D 1uF 40y C520 C538 50V per SCLK PVDD_C_1 d Dar ur kl jw L SEN BTE L s R524 i 2s Es 22K SMAW250 04 PULL DOWN PGND_CD_2 P501 l eu 15 ZE I2S WS Pete to0 PGND_CD_ 1 EAP53148301 I2S_SCK gt ed 100 Los 001 ANN QJ mM MAIN SDA FEO A AG MAIN SCL BOD vp e u cso3 Loss 33pF ZZaspF C Q H Tene READY S gt E O AEN AMP a i 5 i z H lyp SW_RESET BOB D t e T s 25V E C504 Loos ch READY ST T3 3v nvnn T i A m id READY e535 0 033uF DE L504 ce L Sov 1 Bo I 0 tuF MLB 20 1205 0 120P N2 b Sg 521 ILU T DIE THE N SY BOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET E SSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR E CRITICAL COMPONENTS IN THE Ay ST MARK OF THE sert LBElectronics LG ELECTRONICS BLOCK 4 6 SHEE 275 MODEL EAxesezi o1 g DAIE 2010712709 LGE Internal Use Only ice purposes ining and servi Copyright 2011 LG Electronics Inc All right reserved Only for tra PDF created with pdfFactory Pro tr
9. Main PCBA Abnormal screen AV Put into AV cable completely Insult AV cable tight Is Input signal timing Change Timing to 4801 5761 and format in spec Or change format CVBS A YES Check Line between JK101 and IC600 Is waveform at R651 is open or short Another is change AV cable YES Change IC600 WAVEFORMS R651 CVBS Copyright 2011 LG Electronics Inc All right reserved 21 LGE Internal Use Only Only for training and service purposes 6 Abnormal screen RGB PC Main PCBA Abnormal screen RGB PC Y Put into RGB cable completely insult RGB cable tight Change Timing according to product spec Or change format to RGB Is Input signal timing and format in spec y YES f t R628 Check Line between P302 and IC600 s is open or short Another is Change RGB cable 4 YES Change IC600 WAVEFORMS R630 G R634 R R628 B Copyright 2011 LG Electronics Inc All right reserved 22 LGE Internal Use Only Only for training and service purposes 7 Abnormal screen HDMI Main PCBA Abnormal screen HDMI Y Put into HOMI cable completely insulted HDMI cable Change Timing according to product spec change format under 8 bit in Ycbcr Ypbpr RGB Is Input signal timing and format in spec Check Line between JK300 and IC600 is open or short Another is Change HDMI cable Check
10. the circuit board 2 Carefully bend each IC lead against the circuit foil pad and solder it 3 Clean the soldered areas with a small wire bristle brush It is not necessary to reapply acrylic coating to the areas Small Signal Discrete Transistor Removal Replacement 1 Remove the defective transistor by clipping its leads as close as possible to the component body 2 Bend into a U shape the end of each of three leads 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 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 i
11. tur eMo 1 9 oP TXCLK AXC 1 op BOOST_ PWM d E 4 7K aK ARK AIN SDA TXCL KH WN STRAP_IN2 s d S READY R662 AX OB 42 as RF AGCO RR B TXo PXO VCCK 5 VON E CIA B Txol 3 84 ES tip MER 4 1V CS AX 1B 44 83 SDRV 5 Exe L Graf t4 DT gt SDR 2 5V RX 1 5 82 SDRV_4 I 2A tuF mon AX_28 AVDD3V3_AADC i de 6 81 Ea coh gt AVDD3 3VADA R TX2 7 80 C 3E cvas RIN AVDD3V3 HDMI 4g 79 VMID AADC 0800 Wee 153 AVDD1V85 HOMI 7B AIN L cg par I ip EE Pir DMI CEC AVDD1V25 PLI o MU botes pes Geer c 77 oe ee L if 7 AVODI mi e AN gt AVDD4 25 PLL VDD3 3V e e gt AVDD3 3VIEMOD 28 FEADY DMI_SC 76 OXTALI Eti Hs MAX JOOMA Is lw i o dur HMI SQ re TE 3V Tie DMI_SDA 75 _OXTALO TR gy T Dw ma LO HONI SDA a amp A 9 o i PWR5V_I 74 AVOD3SV3_XTAL_STB za i 9 AND 25 DEMOD Tee AVOD3 3VHOMI HDMI 5VINI 1 C53 gt AVDD3 3V_XTAL LO F ts iuF a DMI HPD 73 DIN3 mto wn lI guo La HPDCTL 0 x TP601 d SRT 72 ADINO C650 AVDD1 25 MPLL cot T cen gt AVDD3 3VADA JTSRT Cue O tuF neoa toke re JTDO 74 AVDD3V3 DEMOD EXERCERE sep ele I e JTCK 79 VSS83V3 DEMOD t I3 Be DD1 25 HDMI E d AVDD3 3VIO mt L 0 duF T804 QV GA SDA JTMS eo AVSS1V25 DEMOD RECH VGA SDA JTMS S R amp 004 L603 c n dos rebe STBV3V3 1 en IEN 51 CM2012FR10KT V 33 33 D01 25 R8 ZEN gt AVDD3V3 CVBS ES NGA SCL JTDI IFP E Tune E og Sak coo mul Ion TPEOS BLM1B
12. void the original parts and labor guarantee TAKE CARE DURING HANDLING THE LCD MODULE WITH BACKLIGHT UNIT Must mount the module using mounting holes arranged in four corners Do not press on the panel edge of the frame strongly or electric shock as this will result in damage to the screen Do not scratch or press on the panel with any sharp objects such as pencil or pen as this may result in damage to the panel Protect the module from the ESD as it may damage the electronic circuit C MOS Make certain that treatment person s body are grounded through wrist band Do not leave the module in high temperature and in areas of high humidity for a long time The module not be exposed to the direct sunlight Avoid contact with water as it may a short circuit within the module If the surface of panel become dirty please wipe it off with a soft material Cleaning with a dirty or rough cloth may damage the panel CAUTION Please use only a plastic screwdriver to protect yourself from shock hazard during service operation Copyright O 2011 LG Electronics Inc All right reserved 3 Only for training and service purposes WARNING BE CAREFUL ELECTRIC SHOCK If you want to replace with the new backlight CCFL or inverter circuit must disconnect the AC adapter because high voltage appears at inverter circuit about 650Vrms Handle with care wires or connectors of the inverter circuit If the wire
13. 0 MT1818 Iw Verify BlankCheck High Speed jw USB to UART Bridge Controller jw ShakeHand Custom Burning Address o HEX Custom Burning Length 3E0000 HEX Direct Control Clear MSG M EDIATEK 6 After downloading AC Power OFF and ON 4 2 2 Download method 2 Connection USB memory for upgrade File name mtk bin Press the IN START button Select the Upg Fw menu 4 Press the button and wait 5 If the progressive bar 10096 will be completed Notice Do not plug out USB during upgrading 2 ads LGE Internal Use Only 4 3 ADC Process 4 3 1 ADC calibration MSPG 925 RGB Model 60 1024X768 9 60Hz 4 3 2 PC input ADC 4 3 2 1 Auto RGB Gain Offset Adjustment Convert to PC in Input source Signal equipment displays Output Voltage 700 m Vp p Impress Resolution XGA 1024 x 768 60Hz Model 60 in Pattern Generator Pattern 29 in Pattern Generator MSPG 925 SEHIES Adjustment pattern RGB PC Adjust by commanding AUTO COLOR ADJUST OxF1 0x00 0x02 instruction 4 3 2 2 Confirmation We confirm to address OxF1 in page OxOE of EEPROM the value is OxAA or not If the value is not OxAA we adjust once more We can write the ADC values from Ox00 0x05 addresses in a page Ox0E 0 Manual ADC process using Service Remocon After enter Service Mode by pushing ADJ key execute Auto RGB by pushing p gt key at Auto RGB Copyright O
14. 2011 LG Electronics Inc All right reserved 14 LGE Internal Use Only Only for training and service purposes 5 Check EDID and Write HDCP key year ex when year 2008 input 12 CHECK SUM deferent along week year 5 1 This model is no need to write EDID data is in Program source 5 2 EDID data No tem coment 16bit Data Manufacturer ID GSM 1E6D 2 ProductID 22578 Analog 5831 22579 HDMI 5832 4 Version Analog 1 d 5 Revision Analog 3 S N mas e D Model Name M2341A 5 2 1 RGB EDID Data All data are HEXA Adjustable Data week Copyright 2011 LG Electronics Inc All right reserved 15 LGE Internal Use Only Only for training and service purposes 6 Write HDCP key 1 Connect D sub Signal Cable to D Sub Jack 2 Input HDCP key with HDCP key in program 3 HDCP Key value is stored on Main MTK IC MTK8223 which is 0OX80 0xAO0 Addresses of 0x00 0x01 page EEPROM MAP PAGEO PAGE1 START Addr AO 80 4 AC off on and on HDCP button of MSPG925 and confirm whether picture is displayed Or not of using MSPG925 5 HDCP Key value is different among the sets 7 Adjustment of White Balance HGB Gains are fixed data for each model Insert D sub jack I2C which is connected with PC for White Balance or equivalent device gt Total Assembly line should be check whether the color coordinate x y data Refer to below table were meet or not 7 1 Required Equipment Remot
15. 2DD D4 wans I DEBUG KJ UB 0 0037 T ks i V i ANN C gt RAS232C_TXD 2 DEBUG C USB DM gx D Ve GE 1AS2320 AXD DEBUG USB_OP L OPTION DEBUG IE N SY BOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES PECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION 5 FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET DAE lecia ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR SECRET e LG ELECTRONICS DATE Eolo o IHE CRITICAL COMPONENTS IN THE A SYMBOL MARK OF THE SCHENETIC L 3Flectronics CHEET os LGE Internal Use Only ice purposes d serv ININg an PDF created with pdfFactory Pro trial version pdffactory com Copyright 2011 LG Electronics Inc All right reserved Only for tra TUNER H 1U401 IDIC 6451D NC SV VIF SV TUNER B Ba A eeschte 1E e Im s Dy 30v zz R418 Ne AM Leu d TU AGC d Tos lus 7 SECH que SCL y Y MAIN GO SUA IMA IN SDA Leg Near the pin SCH le p A 415 War ZZ 16V 16V D 2 Close to Tuner SE AIF_P ZEIEN IE N SY BOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES PECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION amnu SSENTIAL THAT ONLY MANUFATURES SPECFIED P
16. A 50W 30W Max On On 70W Sleep mode Off On Power S W Off Off mode Off Off 0 5W Just operate power key mL p Using Altitude 5 000 m for Reliability 3 000m for FOS Operating Environment Temp 10 C 35 C Humidity 20 80 10 Storage Environment Temp 10 C 60 C non condensing ES NN WM Humidity 5 96 90 non condensing Copyright O 2011 LG Electronics Inc All right reserved T7 s LGE Internal Use Only Only for training and service purposes 5 2 TV Non EU i Wem NME 00000 SSC SSSSCSsSSCS 2 Broadcasting system PAL B G DK 1 NTSC M NTSC China DK Australia BG Receiving system VHF UHF C1 C69 CATV S1 S41 4 RewWgssen UpeHsemdm iS 4 System Rear PAL50 SECAM NTSC PAL60 5 RGmu mes map 8 Audio Input 1EA CVBS L R Input 5 3 TV Central and South America 2 Broadcasting system NTSC PAL M N 5 CVBS Input 1EA NTSC PAL M PAL N 3 System Rear NTSC PAL M PAL N 6 RGB Input RGB PC Analog D SUB 15Pin HDMI Input 1EA HDMI1 DTV HDMI version 1 3 Support HDCP Audio Input 1EA CVBS L R Input Copyright O 2011 LG Electronics Inc All right reserved 8 LGE Internal Use Only Only for training and service purposes ar Chroma amp Brightness tem Specification Remark ES RE 0 Fass E B Wm gt 10 Up Down 60 70 75 85 Luminance Luminance cd m RGB Vivid 6500K Full white 100IRE Variation e
17. AB2215N1D 4 VGA SCL JTDI e 67 80005 E SC mei 8500 7 68 Us AN Le Len OSDAO 56 AVDD41V25 DEMOD PT 1 ST s J AIF N DD4 25 LVDS CVBS BNDL EH REDE gt AVDD1 25 DEMOD RE Sar E 33pF ame OSCLO 65 AVDD3V3_CVB 50V TUG oE VS CH t I gt AVDD3V3 CVBS Ei Ee i i ST 324 D3 3V_XTAL Jn I WT ma MAX 50MA n684 d i 0 uf 4 1V_VOOC a Bai f M P VDDIC A 1V H x j i uimj1mmiaolojmi oliloijaijdd n Q 3 0 3j0 0 mj m r ojugs Oj lunl lzi 7 C gt CVBS GND MAX 680mA 2s el MI ss Sg tl ee I i OQjir zz iamjojo olm sz ww Impmlopxiuj uuu tuu ANDD3 3V VGA 5 3V T o St HFHiolon tam ju xictn I oo gt gt uw C OGI S O w0 aes ai em o a Il X nono PM PM PM PM PM x ell ffe fen Uo gt Ui O o a I gt OO 0 ll D H8006 1 H8007 1 H6008 1 He009 14 R5010 1 Q Jolm ojl lt a gt JI O O O I lt oO O O oO 3g 39 39 38 47 Om slo Nau m al gt Y WW VW WW ANN as fol gt gt a gt gt B DDC SA VBA SDA JTMS CD s s gt L603 C885 R8008 R8007 R6008 R6009 R6010 te 5va ANN gt 5DA 2 5V Dr 0 D I 22 0 2m Qu Q EE Tos VGA SCL JTDI DEN la Sg a m ges E U Q t 195 PT 100nH 220pF 33onm 3301m 33ohm 33onm 680m MAX 100MA n bur TT mm eee Ge I rem Oe ala a E BS T9 PM amp BnH 200pF 38ohm 3Sohm 3301m 3301m 4701m j I Bang 22 lt B25 7 EEPROM NP JTCK L I I L 3 I ii di S egal 80 m T 3 E Us 5 E jou 5 us HN L I E j B dz 2 8 3 s S j
18. ARTS BE USED FOR ILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET e MODEL E xe397110 8 DATE 2010 12 09 LG ELELTRONILS BLOCK tonsea SHEET 375 E CRITICAL COMPONENTS IN THE i SYMBOL MARK OF THE SCHEMETIC LGElectronics LGE Internal Use Only PDF created with pdfFactory Pro trial version pdffactory com Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes AUD LO WW x J This parts are I ocated A on AVSS area H u C536 Separate DGND AND AVSS lv S S i mI Ww iul C54 e IN feat 50V 3 poser S TW 15V AMP e m i B j 0 047uF Da QU gm I Uo lt mi gt 0 04uF V ala ia lt L EI Qt O S oO gt no gt 3 oo ce aja O VOD3 3V w VY e ul c524 i L508 C544 0 0 LUF EE T DBF 08220M 0 33uF MLB 20 1209 0 120P N2 Ser Saa T R Lens 40V 0 OtuF 3 3 x MC QUT B 48 iF toe 43 50V 8 4 OSC RES PVDD_B_2 EAPS3148301 eem 33 resur ID
19. Ae 0 4uF 1 SDV I Aur I TM 50V Zem BE doom PGND2_4 USBOUT 4 t fe Hi IS CA TL sav 1 1UF C740 Lu C L702 LO A See Fels T Zen CB3216PA5O1E cr V M 3 Bun PH2 4 VINB3 2 D t i m gt EFS m C738 m QiuF PS 2 VINB3_4 coin T I E p SVa VINB2 1 PH3_2 l 3 un S e z x a MAX BB mA y c7ee VINBe 2 PH3 1 C747 1 p 1 V V KS US I due fur 746 eG ie 50v US asta PGND3 2 10V 10V iuF coy ji _ 0uF A T T T 10V UV powp PGND3_4 lL Cen HZIB LDRV EN_BCK3 1 gov Ayes ANN ANN J POWER SW P 15V A717 MO HDAV DEZ Sg cz PO FB3 T g 50V 25v l Can ui BST4 USBFLB2 NINT V3P3 n LS SS R70B i ANA D lS BERL iK EN BCK4 EN USB2 SDA az cus sov OTST S POWER_Sw gt ANN 100pF KREE C771 CMP4 EN USB1 SCL H OMS Se A04840L A707 prde 50V A730 rue aS 9700 10K 50V T FB1 NRST 29K READY C718 C781 NN i 1000pF C726 3300pF 55 AGND A726 E 100pF 50v 50v 10K 50V DS R724 220k TRIP v3P3 READY 1 C727 vana JL i000pF GC R719 9719 50 V 3 5K Sa Zell 2 LP tov T 4 mm mm EEN AWA DPM ll Cous 38720 DOG 275 D 10K 50V T gt VDD3 3V READY 6772 z 0 1uF DON o 5V TUNER L700 10uH ar QUT e C702 C704 C707 C710 IE Ay BOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES PECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION 5 FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
20. C502 24pin of IC502 R513 SDO R511 WS R512 SCK R510 MCLK 1pin of P501 Audio out Copyright O 2011 LG Electronics Inc All right reserved 24 LGE Internal Use Only Only for training and service purposes 9 Abnormal sound TV Main PCBA Abnormal sound TV insult RF cable tight and then Cable nut screw tight Put into RF cable completely If 4 9V is not at plus pin of L700 check It is over 3V at 20pin of IC701 Is 5V at 2 6pin of TU4017 if itis not Check Line between IC701 and IC600 is open or short Another is change IC701 Check Line between TUAO1 and IC600 is open or short Another is change IC600 or TU401 Is I2C waveform at 4 5pin of TU401 Is IF waveform at 67 Check Line between TU401 and IC600 68 pin of IC600 is open or short Another is change IC600 or TU401 Change Main PCBA WAVEFORMS 4Pin of TU401 SCL 5Pin of TU401 SDA 67 68 pin of IC604 Copyright O 2011 LG Electronics Inc All right reserved 25 LGE Internal Use Only Only for training and service purposes 10 Abnormal sound AV Main PCBA Put into AV cable completely Insult AV cable tight Check Line between JK101 and IC600 Is waveform at C688 C689 is open or short Another is change AV cable Y YES Change IC600 WAVEFORMS C688 C689 audio in Copyright 2011 LG Electronics Inc All right reserved 26 LGE Internal Use Only Only for training and service purposes 11 Abnormal s
21. Check 8 1 Check display and sound Check Input and Signal items cf work instructions 1 TV 2 AV CVBS 3 COMPONENT 1080i 4 RGB PC 1920 x 1080 60hz 5 HDMI 6 PC Audio In Display and Sound check is executed by Remote controller 9 Preset CH write condition 1 AC on time on only one after assembled automatically 2 CH recover on SVC OSD manually 16 LGE Internal Use Only TROUBLESHOOTING 1 NO POWER Main PCBA Is Lips Output VOLTAGE 16 4V 5 2V Change Lips or find out i A short or open point uei of connection with Lips of P 00 p check the Lines of IC700 Is 3 3V at 2pin of IC700 If there is any problem at Line Change IC700 S 5V at 12 39 pin of C701 Eee uie oT ME Is 3 3V at plus pin of C709 If there is any problem at Line is 1 1V at L705 Change IC701 Check Line short or open between IC600 and X600 Change IC600 or change X600 Check waveform of X600 YES is 5V at 1pin of P200 when push power key S Ov at 4pin of P2002 Change control Or check Line short or open of P200 Is there any waver at 3pin of P200 change IR board when use remote controller Or check Line short or open of P200 Insert F W X600 Copyright O 2011 LG Electronics Inc All right reserved 17 LGE Internal Use Only Only for training and service purposes 2 No raster Power LED blue black screen Lips PCBA NO RASTER Screen is not displayed check
22. L HLS5V LI HDMI wig Q300 Fas Cl 2sc3875S ALY DRO SS a a gt I 9 B DI a ID vii vi O uw C H5 WA ICH N al Ql an a a SPGO 1509841 1 7 UN E enl nm D fam St oe rum SHIELD Q Q E 3 SIb g K man L LTIB D O 9 m ad al s hi AN ST 3 3V D a be E HPD L SE T5V POWER FORTE END FBZ fo 1 OHONI SDA ED GND GN 2 PBa HIMI SCL ND_2 SCL ra a NC m m ED e C DSUB R cee ENANA rr o HEEN CND DS GND G i CLK Oz oF DC DATA A338 33 CLK SHIELD WN D Ab i lcs H N Ten DR CB TO A gt DSUB_G JE_GND JP 305 GNO_B kd Du j E 68 f CBT SYNC R340 Duc eI JE vw DSUB HSYNC EC JP305 9 9 C gt DSUB B Dh E JP307 DA 6 Tt Beso E CR De SYNG m SE hd DSUB VG YNC ND_ 4 A344 68 BRB AB re L YNC GND ST_3 3V JP309 0316 wey SE Deu TS 9 a DEE R342 IC304 READY d DL ey y DC_ GND 9 10K YKF45 7058V AT24CO2BN SH T 1e o lio C DSUB DET JK300 AN 3 EN R356 READY C321 Ch 10K O 1uF V JP302 mn lt R350 Lu GE UR STA D ik gt ola gt B gt gt gt w gt lus gt QO Mis Oo ag e e Ga D I 6 z moje mj Em ai m g aaja Lose k 1 RESI I gt FE ip T s B P D m E 4 KS 47K Tp B E Q 6 ky o m ial vi M1 E oO m a a D Di vi m fu DV NM gt HMS o a a O oO O 7 kd gt gt gt gt k A Cut SA dr TI D315 z ENKMC2838 T 112 kg A2 es DDC5V A1 13 HSYNC Gs 14 VSYNC DDC SDA 15 SCL DDC SCL T58NV USB N ST 3 3V P303 SMW
23. Line between JK300 and IC600 Is 5V at 19pin of JK300 is open or short Another is Change IC600 or HDMI cable Check Line between JK300 and IC600 is open or short Another is Change HDMI cable Is waveform at R819 R320 Check Line between JK300 and IC600 s waveform at R321 R322 is open or short Another is R3823 R324 R325 R326 Change HDMI cable YES Change IC600 Copyright O 2011 LG Electronics Inc All right reserved 23 LGE Internal Use Only Only for training and service purposes 8 No sound all source Mam PCBA Does wire connect P501 with speaker Connect wire between P501 and speaker If 8V is not plus at L703 check 1 2 pin of P700 is open If is not Check Line between L703 and IC502 is open or short Another is change IC502 S 16 4V at 2 34 40 44pin of IC502 If 3V is not plus 13 27pin of IC502 check It is over 3V at L501 L504 if itis not Check Line between L702 and IC502 is open or short Another is change IC701 1C502 NO Is 3 3V at 13 2 pin of IC502 EC Check Line between 1C502 and IC600 is open or short Another is change 23 24pin of IC502 IC502 or IC600 Check Line between 1C501 and IC600 is open or short Another is change IC502 or IC600 Is 12S waveform at R510 R511 R512 R513 el Check Line between 1C502 and P501 is open or short And then check resistance of speaker is under 4ohm Another is change IC502 Is there any waveform P501 23pin of I
24. Safety CE IEC specification 2 Specification GE Each part is tested as below without special appointment Safety IEC EN60065 2 1 Temperature 25 C 5 C 77 F 9 F EMI EN55013 CST 40 C 5 C EMS EN55020 2 2 Relative Humidity 65 10 2 3 Power Voltage Standard input voltage 100 V 240 V 50 60 Hz Standard Voltage of each products is marked by models 2 4 Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM 2 5 The receiver must be operated for about 5 minutes prior to the adjustment 4 Module Specification LGD LM215WF1 TLE1 P N EAJ61327601 1 nme TFOWWlCDWoe 3 Acie Display area mem Im 195 88 x 28820 x 145 5 AepetRaio OS 6 PwsNume mmm mm om 00 SS SSES 1 Operating Mode Wem PS s Backightunt 2 00sQume O o o Copyright O 2011 LG Electronics Inc All right reserved 6 LGE Internal Use Only Only for training and service purposes 5 General Specification 5 1 RGB PC Supported Sync Type Separate Sync RGB S OG Operating Frequency Horizontal 30 69kHz Vertical 56 61 Hz MEE UO Horizontal Me MN 3 Resolution Analog 1920x1080 60Hz Digital WE ech D Input Voltage Voltage 100 240 Vac 50 or 60Hz 5 Inrush Current Cold Start 50 A Hot 120 A Operating Condition Sync H V Video LE Wattage Power S W On Max On On Active Blue EE M2241
25. 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 5 Minutes Heat Run Temperature at 25 C x 5 C Relative humidity 6596 10 96 Input voltage 100V 240V 50 Hz 60 Hz 6 Adjustment equipment Color Analyzer CA 210 or CA 110 Pattern Generator MSPG 925L or Equivalent DDC Adjustment Jig equipment SVC remote controller 3 Adjustment items PCB assembly adjustment items 1 Download the MSTAR main software IC603 Mstar ISP Utility 2 Auto Color Balance ADC RGB 3 Auto Color Balance ADC Component 4 Input Tool Option Area option 5 Check SW Version SET assembly adjustment items 1 DDC Data input 2 HDCP data input 3 Adjustment of White Balance 4 Preset CH information 5 Factoring Option Data input 4 PCB assembly adjustment method 4 1 Input Tool Option Area Option Option adjustment following BOM Tool Option 1 Area Option Required Equipments Remote controller for adjustment Profile Must be changed the option value because being different with some setting value depend on module maker inch and market Adjustment method The input methods are same as other chassis Use IN START Key on the Adjust Remocon Copyright O 2011 LG Electronics Inc All right reserved Only for training and service
26. ated 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 2011 LG Electronics Inc All right reserved Only for training and service purposes a 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 a 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 shorte
27. braid CAUTION Work quickly to avoid overheating the circuit board printed foil 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 solder with a small wire bristle brush LGE Internal Use Only IC Remove Replacement Some chassis circuit boards have slotted holes oblong through which the IC leads are inserted and then bent flat against the 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
28. d 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 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 Use an appropriate gauge of RMA resin core solder composed of 60 parts tin 40 parts lead Keep the soldering iron tip clean and well tinned 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 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
29. e controller for adjustment Color Analyzer CA 210 CH 09 LCD MNT Normal PC for communication through RGB Pattern Generator MSPG 925FS series 7 2 Connecting diagram of equipment for measuring For Automatic Adjustment Method 1 using IIC You connect RGB Cable COLOR ANALYZER Internal Pattern of Mstar RGB I2C serial communication PC Standard color coordinate and temperature when using the CA210 equipment RGB Gains are fixed data for each model X 0 283 0 03 lt Test Signal gt Cool 9 300k K Y 0 298 0 03 Color M2241A PC Mode only Temperature X 0 313 0 03 M2341A Full White Warm 6 500k K Y 0 329 0 03 100IRE X 0 283 0 03 Cool 9 300k ok lt Test Signal gt Y 0 298 0 03 RF AV HDMI Color X 0 295 0 03 M2241A i Medium 8 000k K nner pattern Temperature Y 0 305 0 03 M2341A X 0 313 0 03 Warm 6 500k K 216gray 85IRE Y 0 329 0 03 Cool Min 120 Typ 150 Medium Min 120 Typ 150 M2241A lt Test Signal gt Warm Min 120 Typ 150 Luminance cd m Cool Min 170 Typ 200 Full white Medium Min 170 Typ 200 M2341A 100IRE Warm Min 170 Typ 200 Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes When doing Adjustment Please make circumstance as below LCD Module CA 210 or Equivalent Optical Stage x y 10 50cm 8 Function
30. e eee eee x Color Coordinates CIE1931 Vivid 6500K Full white 100IRE O Optical Test Condition Surrounding Brightness Level dark Surrounding Temperature 25 C 5 C 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 1 Active area of LCD PANEL is in bezel of cabinet 2 Interval between active area and bezel IA Bl 1 0 mm IC DI 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 gt Bezel Copyright O 2011 LG Electronics Inc All right reserved 9 LGE Internal Use Only Only for training and service purposes 7 SET Optical Feature 7 1 PC Mode Measurement Condition Full white Standard 6500k gt Measure the black luminance after 30 seconds IN Fo 1 22 inch LGD 150 500 1 700 1 2 23 inch LGD 200 500 1 700 1 7 2 AV Mode Measurement Condition Full white 100IRE Vivid Measure the black luminance after 30 seconds A m EE a C R min min Item module Remark a AN HDMI 22 inch LGD 120 500 1 RF AV HDMI 23 inch LGD 170 500 1 7 3 Special feature DFC DFC Working Condition Full Black Pattern All Black No pattern MSPG Pattern 2 signal in D sub ve o m
31. e identified by 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 2011 LG Electronics Inc All right reserved 29 LGE Internal Use Only Only for training and service purposes VDS IR CONTROL Key IR amp md Zener Diode is close Le wafer CN ST 5V D D df 20 27 BLM18PG121SN 11 HS J P200 SEI GE SMAW200 05 TXCEOF TXCE0 TXCE4 TXCE1 TXCE2 TXCE2 TXCES TXCE3 TXCLKE TXCLKE TXCLKO TXCLKO TXCDO TXCDO TXCO 4 TXE04 TXEO2 TXCO2 TASCH TXCO3 DAT 8S IR CH KEY4 C d au o n Be ARR p o oo DV 18V LCD P201 1003 1HA 30 ZN Sg GE E LED B EADY eSCSS7ESLALY TXCES TXCE3 TXCLKET TXCLKE TXCE2 TXCE2 TXCE 1 TXCE1 TXCEO TXCEO TXCO31t TXCO3 TXCLKO TXCLKQ TXCO2 CVBS IN TXxcae Txca it JK 101 TXCO1 PPJ148 07 m TXCGOO RD CONTACT RD O SPRING pu WW T 5 CVBS HIN ADLENG pn uo Brik Si 30V 280K I READY WHlC LUG L 7 mp T 7 AN gt CVBS LIN WH GND p
32. f G North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com LCD MONITOR TV CHASSIS LD93H MODEL M2241A M2241A PTN CAUTION BEFORE SERVICING THE CHASSIS HEAD THE SAFETY PRECAUTIONS IN THIS MANUAL P NO MFL62477324 1102 REVOO Printed in Korea CONTENTS CONTENTS 2 PRODUCT SAFETY custos evt ec sens udis uus pec eser Hec EN EEUU SNO Ve NEP EPSadIzDU ANN UGEaIEE UE 3 lg leges wg m 6 ADJUSTMENT INSTRUCTION esee eere eene nnn 12 TROUBLE SHOOTING oiii sinesindnqendiecendumEsS a a aia 17 HO 6 qb ic nl M nnna E EAA 28 EXP EODED VIEW 29 SVG ccc Copyright 2011 LG Electronics Inc All right reserved 2 LGE Internal Use Only Only for training and service purposes PRECAUTION WARNING FOR THE SAFETY RELATED COMPONENT There are some special components used in LCD monitor that are important for safety These parts are marked on the schematic diagram and the Exploded View It is essential that these critical parts should be replaced with the manufacturer s specified parts to prevent electric shock fire or other hazard Do not modify original design without obtaining written permission from manufacturer or you will
33. ght reserved Only for training and service purposes P302 SMAW200 03 KEY 1 5W301 IC300 KSM S903TM41P LEI P JTP 1280 A303 KEY 4 i5 if Mk IR NS A LD1 LTL1AHTBK4 I VOUT er vec NVV SMAW200 05 P301 C301 C302 4 7UF 4 7UF 6 3V 6 av i d C301 C302 R300 is close to IC300 BOL MARK OF THIS SCHEMETIC DIAGRA CORPORATES MODEL wa A ev te DATE 2010 11 25 ATURES IMPORTANT FOR PROTECTION FROM X RADIATION CTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET R BLOCK SHEET OM I CAL COMPONENTS IN 1 et te e cen LBBectoncs LE ELECTRONICS LGE Internal Use Only Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes PDF created with pdfFactory Pro trial version www pdffactory com LG Electronics Inc
34. ial version pdffactory com TXCEO TXCEO TXCE IL TXCE 1 TXCE24 TXCE2 TXCE3 T TXCE3 TXCLKE TXCLKE TXCLKOT TXCLKQ TXCQ04 TXCOO TXCO1 t TXCO4 TXCO24 TXCO2 TXCO3 TXCO3 bl ll alal alal l vl h Al a 5 4 vl A ilala 8 E g 5 ao ala bo a oi zl zl Gi oO uj uw ml u wl oul x sl nl u g 410 ao a el eo Oo a
35. in tye e ema M2241A 40000 1 50000 1 PC Mode D sub For Checking Black Luminance M2341A 40000 1 50000 1 wait for over 1 minute 8 RGB Input PC HEIL MEC eg Leg 1 640480 381469 469 5994 94 25175 175 AM Hu e s were 499 goofs 4 usas Lan ne 8 O 1280 960 so Jm 1080 NN 6 12801024 63 981 60 02 108 0 E eono se mam pner a p 8 1680 050 652900 290 59954 954 14625 25 Copyright O 2011 LG Electronics Inc All right reserved 10 LGE Internal Use Only Only for training and service purposes 9 HDMI Input DTV ee em Jew Lan eD ovos ies wn faa maen 5 mvws os an 2o mme o nmn i50 nn nm ms om a an 742 mme o eem es e re mmm 10 Mechanical specification Product Width W Length D Height H Were mp m emo m REN B wot Wes 0 054 8 po EU Container Individual or 20ft 40ft Loading Palletizing Indi Wooden Indi Wooden LL NN D GET Weck mE BEEN L Pease om WR WE Stand Assy Copyright 2011 LG Electronics Inc All right reserved 11 LGE Internal Use Only Only for training and service purposes ADJUSTMENT INSTRUCTION 1 Application Range This document is applied to LD93H chassis LCD Monitor TV which is manufactured in TV or Monitor Factory or is produced on the basis of this data 2 Specification 1 The adjustment is according to the order which is designated
36. ine uf 2 ST FEADY YL CONTACT E E E gt YL D SPRING Preg i AWN ieee CVBS VIN D40 R108 C119 YL GND si C118 330pF at SW lg L READY LGE Intemal Use Only ice purposes d serv ININg an THE N SY BOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS E SECRET LGElectronics SSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR E SCHEMETIC LG ELECTRONICS BLOCK E CRITICAL COMPONENTS IN THE N SYMBOL MARK OF 1 MODEL aan sIDATE 2040742709 BLOCK ue SHEET te PDF created with pdfFactory Pro trial version pdffactory com Copyright 2011 LG Electronics Inc All right reserved Only for tra INTERFACE
37. nd 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 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 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 LGE Internal Use Only SPECIFICATION 1 Application Range 3 Test method This spec sheet is applied to the 58 cm 23 inch LCD Monitor TV used LH92H chassis 3 1 Performance LGE TV test method followed 3 2 Demanded other specification ifi i
38. open or short at Line Check Line short or open between Is 1 1V at L705 C701 and IC600 Is 3 3V at L702 If there is any problem at Line Change IC701 or change IC600 check open or short at Line and wafer Is 1 25V at 2pin of IC702 between IC702 1C703 and IC600 s 2 5V at 2pin of IC 03 If there is any problem at Line Change IC702 IC 703 or IC600 It is not over 3V at 9pin of P700 Change Q701 is 3V at 9pin of P700 Or check Line short or open between P700 and 95pin of IC600 Change IC 600 If LVDS cable isn t insulted enough Put into LVDS cable completely Insult LVDS cable until locking hook LVDS cable have damage If LVDS cable have damage Change LVDS cable If is not under 1 5V at R744 change Q702 or check open and short of Line among Q703 and Q702 If is under 4 8V at L710 Check open and short ves Of line between L710 and P201 Insert the F W back or REPLACE LCD MODULE is 5V at 1pin of P201 Copyright O 2011 LG Electronics Inc All right reserved 18 LGE Internal Use Only Only for training and service purposes 3 Abnormal No screen All input Main PCBA Abnormal No screen all input If LVDS cable isn t insulted enough Put into LVDS cable completely Insult LVDS cable until locking hook LVDS cable have damage If LVDS cable have damage Change LVDS cable If is not under 1 5V at R744 change Q702 or check open and short l of Line among Q703 and Q702
39. ound HDMI Main PCBA Abnormal sound HDMI Y Put into HOMI cable completely insulted HDMI cable Is Input signal timing Change Timing according to and format in spec product spec change format to PCM Check Line between JK300 and IC600 is open or short Another is Change 1C602 or HDMI cable Check Line between JK300 and IC600 Is 5V at 19pin of JK300 is open or short Another is Change IC600 or HDMI cable Check Line between JK300 and IC600 is open or short Another is Change HDMI cable Is waveform at R819 R320 Check Line between JK301 and IC600 s waveform at R321 R322 is open or short Another is R323 R324 R325 R326 Change HDMI cable YES Change IC600 Copyright 2011 LG Electronics Inc All right reserved 27 LGE Internal Use Only Only for training and service purposes BLOCK DIAGRAM aa u e OOWW Me EB MOON AVI OON yasa 9 eine ney 134 rena SINDOW AG ira Aq puels AC E dwe A94 JE l ree eee eee er Iech LW Quy Jeyeedgs e npouJ go UNG 8E I 2409 0801X066 SCA 1 JOSS990J d olpny Josseooud Op INOHd33 ING LGE Internal Use Only 28 Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes EXPLODED VIEW IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety related characteristics These parts ar
40. purposes WER LD93H LGD M2241A Main V1 00 UTT X ADC NG EDID NG NG Tool Option Area Option 1 1 Push the IN START key in the Adjust R C 2 Input the Option Number that was specified in the BOM into the Shipping area 3 Select Tool Option Area Option by using V A CH key and press the number key 0 9 consecutively ex If the value of Tool Option is 7 input the data using number key 7 If not changed the option the input menu can differ from the model spec Refer to Job Expression of each main chassis ass y EBTxxxxxxxx for Option value Before PCB check you have to change the Tool option Areaoption and have to AC off on Plug out and in If missing this process set can operate abnormally Never push the IN STOP KEY after completing the function inspection 4 2 S W program download Profile This is for downloading the s w to the flash memory of IC603 Equipment 1 PC 2 MTK tool program 3 Download jig 4 USB Connection structure Download jig RGB cable Connection condition 1 IC name and circuit number Flash Memory and IC603 2 Tact time about 2min LGE Internal Use Only 4 2 1 Download method 1 Preliminary steps PCB Ass y 2 Connect the PC to USB jack Download Steps 1 Execute ISP Tool program in PC then a main window will be opened Ww MtkTool Ye Port Baud Rate Window MT8223 Flash Upgrade wrez23
41. s are pressed cause short and may burn or take fire Leakage Current Hot Check Circuit AC Volt meter Good Earth Ground such as WATER PIPE To Instrument s CONDUIT etc exposed METALLIC PARTS ANN 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 SERVICING PRECAUTIONS CAUTION Before servicing receivers covered by this service manual and its supplements and addenda read and follow the SAFETY PRECAUTIONS on page 3 of this publication NOTE If unforeseen circumstances create conflict between 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 b Disconnecting or re connecting 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 explosion hazard Test high voltage only by measuring it with an appropriate high voltage meter or other voltage measuring device DVM FETVOM etc
42. t 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 2011 LG Electronics Inc All right reserved Only for training and service purposes 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 Be
43. x coman x 115200 Jh e Operation Help 4 v Lr Load Bin file SES Check Sum Mk Tool Backup file backup bin Browse H Backup USB Config 0 RS 232 Usb gt MT1818 C Usb C Usb C MT1888 C R5232 flashles MT18 Dram Flash 18 IV Verify BlankCheck High Speed Iw USB to UART Bridge Controller V ShakeHand Custom Burning Address o HEX Custom Burning Length ESO HEX Direct Control cense AVIE DIATEK 2 Click the Config and Change speed MT8223 Using Port 115200 4ms w Mt Tool at MT8223 Hash Upgrade Mr8223 coma x 115200 4 ms v Load Bin file Backup file backup bin 0 P 1 B Upgrade Check Sum ess USB Config RS 232 C Usb C Usb C Usb gt MT1818 C MT1888 flashles C H523252MT1818 Dram Flash Iw Verify BlankCheck High Speed Iw USB to UART Bridge Controller jw ShakeHand Custom Burning Address o HEX Custom Burning Length ESOU HEX Direct Control cense AVIE DIATEK Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes 3 Click the connect button and confirm MtkTool MT8223 Flash Upgrade Z Port Baud Rate Window Operation Hote Iran comaa x 115200 dh IP aE S Load Bin file DI Er Upgrade Check Sum Backup file Jbackupbin

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