LCD TV SERVICE MANUAL
Contents
1. 4 7K 8010 E AX 6 4 O 4 5 e Q 22 HD Non Small FHD Small FHD RB98 1 88010 R8011 1 4 7K MA E 4 7 4 7 Non Map 2008 LELLE moe P 1 J Apollo 10082 ez R896 2 4 7 R898 2 28010 52 28011 92 5 MH m LLL LL E LH LL Yup NANI ZB SEEE Close to IC as close as possible I I a FEN O Non Small PED A 1 2V_VDDC_MST E NUT R8010 3 qy 88011 93 3 5V_MST a Bou 41 87 DDR lt gt lt gt D D D D D D D D D D D D D D D D D LGD Joker LGD Joker Small FHD Non Small HD 3 3V MST 2 43 3V MST A ES2. 5 MULTI vss OA 5 MULTI A 5V_HDMI_2 5 DMI 1 B pe 301 5 HDMI 1 RT1C3904 T112 R303 5 Mite o PRENNE v y KDS184g e 4 1K 1301 R302 300 HP D MS T 2 i sia e e 1 x HDMIl BEPROM CATAL Y kosis4s a HPD MST 030 j E 301 2 1007 CAT24C02WI GT3 309 R31 0 01uF RT1C3904 T112 10K val 28038798 R327 100 DDC WP R3082 6310 C302 ES 10K 210Ke 0 01uF m 8305 100 4 45V POWER 419 HPD DDC CEC GND E 5V POWER O 30 L i gt DDC_SDA2 x Rp 1 gt PDC SCL2 SDA NC gt E ki gt SDAl1 SCL CEC CEC e gt DDC 56141 no NC 2 gt TMDS2 RXC CEC CLK SHIELD CEC 7 gt TMDS1 RXC TMDS2_RXC CLK SHIELD C gt TMDS2 RX0 ci DATAO_ SHIELD Bi gt TMDS1 DATAO T gt TMDS1 RX0 ATAO TMDS2 RX04 SHIELD gt TMDS2_RX1 0 DATA SHIELD z 2 5 __ TMDS1_RX0 E gt TMDS1_RX1 ER TMDS2_RX1 DATA SHIELD gt TMDS2 RX2 ATA2 SHIELD ES TMDS1_RX1 umm gt TMDS1_RX2 ue f TMDS2_RX2 DATA2 SHIELD Se DATA2 gt TMDS1_RX2 YKF45 7058V JK302 a JK301 YKF45 7058V HDMI3 EEPROM RENESAS 1C302 1 RIEX24002ASAS0A 15V MU
3. T TERMINAL2 CDS3C30GTH RED_GND iC OT Em gt PCR 7 C GREEN GND e 20 p pes e DSUB_SDA poss 30v 8 C BLUE GND e is E R207 SYNC a 68 3 13 20200 R214 lou HS m uS gt PC_B RUM oe 9 we is V SYNC R208 oS iu ET d 4 7K I 10 SYNC d DSUB SCL m 16 SHILED 5 MULTI A C 2838 7112 RGB EEPROM RENESAS IC201 D211 IC201 1 CAT24CO2WI GT3 RIEX24002ASASOA 12 jm jp 1 4 4 7K 4 7K 4 7K 0 01uF i READY il 5 DDC WP R217 100 i DSUB 5 R 100 lt __ 5 8_5 JK203 PEJ021 01 E SPRING EB PO AUD R TERMINALI 7 t gt B TERMINALI e CDS3C30GTH R_SPRING PC AUD 1 T SPRING dius 7 gt 0203 8236 B TERMINAL2 30v pus 12K e MODEL DATE BLOCK __ SHEET LGE Internal Use Only EAXO04045802 LPO Lam on R1EX24002A8AS0A OPTION SW_HPD USE SW HPD Default HDMI1_EEPROM_RENESAS 10300 1 MST HPD USE MST HPD 1 24002 5 50
4. 110 dSIQI NO 5 126 NIVIN AL 00801 1 SNLVLS TANVd gt _ 2 NIH NIT AV _ DES NIA AV SUJAUJO0S NIH NIT AV e a SUJAUDO0S H 1 INJNOdWOO 1d Ad A ININOAMNOD E m lt VdS 10S gt NIH NIT 2 0092 NIA Od T002Xl 00891 V4192v39 E02 Mf GNNOS Od F3MTOXL Eo Fy3OXL g O H Od SES EJOXL s HY 10S NIYIN HHOXL 03OXL e 8 SOG 205 0508 AY 1dO zuaa asn 59 5 Z3M o edad YE LOEMf 9SZ9 1vz gt NOYA33 vagnos BE P COE Mf 05 198 IQ 419 185 OQ ZO 146 coemr Loz asn 1024 G31 9 yl LGE Internal Use Only 17 Copyright 2009 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 are identified by A in the Schematic Diagr
5. D105 R112 R120 30V 220K 12K RD1 CONTACT RD 1 CONTAGT 2 WH1 0 SPRING 10K D104 R111 R119 30V 220K 12K WH1 0 SPRING_2 i WA CVBS LIN YL1 CONTACT YLI CONTAQT 1 N P_12V_SMALL_15V YL1 0 SPRING YL1 0 SPRING_1 A m gt CVBS_VIN GAIN X 4 R110 5005 e 20105 ISA1530AC1 R105 YL1 E LUG YL1 E LUGES 5 Ge A os MNT_VOUT_T 802 E LUG RD1 O SPRING 1 8123 c101 p Hour 7 MNT ROUT JP101 R101 20106 103 1E 7 e 30V DRE ji 220 V SN 4 T112 102 RD2 0 SPRING_2 RD1 E LUG S 5 gt MUTE_LINE M R103 SE READY 0103 RT1C3904 T11 RD2 CONTACT WH2 0 SPRING WH1 0 SPRING R124 T Y A MNT_LOUT 2D107 104 307 IU R125 Q106 RD2 O SPRING 1 WH1 E LUG ARS 802 E 881 a E 6 MUTE LINE NOISE RD2 E LUG S RD2 E LUGS AUDIO OUT OPTION BLOCK BL2 0 SPRING RD2 0 SPRING 2 R113 i 2 R D10 R100 R117 30V 220K 12K BL2 E LUG S RD2 CONTACT e JP102 R121 75 GN2 CONTACT WH2 0 SPRING 8114 v gt COMP2_L 10 104 118 E 220K AOR GN2 O SPRING RD2 0 SPRQNG 1 gt gt COMP2_PR GN2 E LUG RD2 E LUG S 2D100 R107 e 500
6. 3 4 6 6 7 9 _0 00 Fe FF FF FF FF FF 00 6D o1 00 01 01101 ot 01 15 01 o3 80 46 27 78 OA 9 Bo 57 49 90 25 20 11 49 4B 21 08 00 45 40 O1 01 61 40 01 04 01 01 30 01 01 01 01 04 01 01 10 00 72 51 DO 20 6E 28 40 1B 21 50 A0 51 o0 00 20 13 03 40 Ez 21 00 C4 21 00 00 9E 00 00 00 00 wo oloimis 28888888383 59 lallo 0 O m o RO R o O o Ola 40 55 50 48 60 47 2 170 00 or go 20 20 Co 00 98 o0 BC 96 C 00100 26 al m Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes 11 4 4 ADC Calibration 4 4 1 ADC Calibration Component Using External pattern 1 Required Equipments Remote control for adjustment MSPG 925F MSPG 1025 MSPG 3233 Pattern Generator 2 Process 1 Change the Input to Component1 or 2 mode 2 Input
7. O SPRING Si M R224 L SIDE LIN YN 8223 12K 220 SIDE AV gt SIDE_V R227 5 68 75 m e IDE AV YL O SPRING 1 Design It s possibel to 27 47ohm 45V USB USB A Close to SIDE_USB n AEN e 214 0 OCP READY lo Er zm 75 6 3V 16V 16V REAR USB AC 7 JK205 BE zs SIDE USB KJA UB 0 0037 _ KJA UB 4 0004 IC202 JK204 AP2191SG 13 REAR_USB o EH USB DL N R229 d 510 4 5 gt USB DN USB DL N 1 R230 5 gt USB_DP 058 DLP 3 5 MULTI ERST USB DL P 0 a READY READY Uu READY READY READY REAR USB 3 7120177 20005 R210 C208 209 lt 30V 30V R209 4 7K 0 1uF Tur 1K Tw 16V N SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR IHE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC WHEN SERVICING IF 15 Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes SECRET LGElectronics LG ELECTRONICS PE SPG09 DB 010 JK202 6
8. A SERIAL FLASH 64M sh MEER LIE MEN e 6003 2 522 gt 251 6445 106 ANN AAA 47 4 7 Closed IC 3 26 PHD 26 FED 51 10 5 3 3 MULTI Sag LGD Joker T 5 i 8896 55 4 71 RES AS 4 7 R8010 5 88011 85 css NC 1 8103 SCLK off 0 9 Iker 20 Yan 413 3V MULTI MST SPI CLK FHD 0 5 Joker 126 OUT TE e H W OPTION ida da a 22385 3 51 5100 SPI DI MENS _ BE tr ii eu B E R896 R898 R8010 R8011 Hm OD m oO M BR Ga a E a S a L802 Small HD INC SE PESE f 16 NAN MI E ias isi x 4 T i ma sal 5 TK TK ee 8 Non Small HD 4 7K X X 4 7K d jl 8V_DDR 7 7 a LGD Joker 4 7K 4 7K 4 7K X ym 3 8 41 2V_VDDC_MST 3 as 2 T A 3 3V_MULTI_MST 26 FHD 4 1K 4 7K 4 7K 4 7K d J33 4 4 3 3V_MULTI_MST E 0 S Joker 4 7K 4 7K X 4 1K E E 2 5 R878 S S 2 bs pe 5 C 6 TK Non Small FHD X X dz i383 330548352 dg q 2877 apollo X 4 7K 4 7K 4 7K e 4 HE 10082 X 4 X 4 1K Tk EE 10K Small HD 19 22 26 Inch gt g lt cj wo Saqdadgogqadadde Q READY Non Small FHD ormal non 100Hz FHD Model SP
9. LG North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com LCD TV CHASSIS LP91J MODEL 26LK310 310Y 26LK310 310Y TA 26LK311 26LK311 TB CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL P NO MFL62461531 1104 REVO1 Printed in Korea CONTENTS a AP 2 PRODUCT SAFETY cosita 3 SPECIFICA TON AAPP 6 ADJUSTMENT INSTRUCTION eee erreur eee 9 TROUBLE SHOOTING tostada 14 BLOCK DIAGRAM 17 EXPEODED VIEW 18 SCHEMATIC CIRCUIT DIAGRAM 5532555552255 90275559 Suus Copyright O 2011 LG Electronics Inc All right reserved va LGE Internal Use Only Only for training and service purposes SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by A in the Schematic Diagram and Exploded View It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock Fire or other Hazards Do not modify the original design without permission of manufactu General Guidance An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the
10. TUNER TU500 TAFJ 2001D NC 1 NC 2 N ear EA e p i n SUN Y B 5V READY READY R500 ter ls e nm oC 16V 16V gt 0500 1 MOPLL AS 100 TAFJ HOOIF EI 120 ohm SCL R504 uut M SCL wT SDA n M SDA IU NC 3 framar SIF gt MAIN_SIF los ul 50V NC 4 l tu MAIN sav VIDEO ISA1530AC1 1 ET B un GND Ie SHIELD SHIELD THE N SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION SECRET Lo ELECTRONICS MODEL no DALE THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC GElectronics GHEE Copyright 2011 LG Electronics Inc All rights reserved LGE Intemal Use Only Only for training and service purposes EAXO440452802 rt 1 8V A L606 4 20 ohm i 6V_NTE MLB 201209 0120P N2 e EN gt 1 8V_AVDD 01 100003 Jn T
11. TXCE1 TXCE2 TXCE2 TXCE3 TXCE3 TXCE4 TXCE4 TXCLKE TXCLKE TXCEO 0 1 TXCE1 TXCE2 TXCE2 TXCE3 1 51P_FEC WAFER FED f il 2V L CD 105 515 402 gt SMALL NC5 2403 5 12 LCD FF10001 30 gt SMALL NCl FF10001 30 26 32INCH WAFER gt SMALL NC2 A gt SMALL OPC OUT 19 221NC NOT AUO IPS 1 e 0 e e NON Small CMO R432 e 8435 0 4 SMALL NC5 NON CMO 42FHD R436 0 1 SMALL NCl NON CMO 42FHD H R426 0 TXCEO E SMALL NC2 AUO SHARP 42FHD T 4 gt SMALL FHD BRIDING AUO SHARP 42FHD TXCE1 1400 ___500 3 TXCE D BRIDING 1 SUB SCL TXCEl TXCE3 FHD BRIDING m 140 __ap0 ohm 3 3V_MST BE
12. x lt target y gt target 1 First decrease so make x a little more than the target ii Adjust x value by decreasing the G 4 Standard color coordinate and temperature when using the CA100 or CA210 equipment Temp uvA 0 269 0 002 0 273 0 002 13 000 K 0 000 0 285 0 002 0 293 0 002 9 300K 0 000 0 313 0 002 0 329 0 002 6 500K 0 003 22LK310 311 Small size inch s color coordinate is different from others so use below table Temp uvA X y 0 285 0 002 0 293 0 002 9 300 K 0 000 0 295 0 002 0 305 0 002 8 000K 0 000 0 313 0 002 0 329 0 002 6 500K 0 003 Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes 13 gt To check the Coordinates of White Balance you have to measure at the below conditions Picture Mode Select Vivid and change Dynamic Contrast Off Dynamic Colour Off gt Picture Mode change gt Vivid User If you miss the upper condition the coordinates of W B can be lower than the spec LGE Internal Use Only TROUBLESHOOTING No power A PROCESS LED indicator off Fail Check short of Main B D or Change Power B D Check 24V 12V 3 5V of Power B D Check Output of 1001 IC1003 IC 1007 Pass Change IC 1002 IC 1008 01003 Fail Check LED Assembly Pass No Raster B Process Check short of IC1001 1003 IC 1007 Chang
13. AC power line Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks It will also protect the receiver and it s components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation If any fuse or Fusible Resistor in this TV receiver is blown replace it with the specified When replacing a high wattage resistor Oxide Metal Film Resistor over 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 1MQ and 5 2MQ When the exposed metal has no return path to the chassis the reading must be infinite An other abnorma
14. D801 R885 E 2 3 53 il 3 R8001 43 5V MST e ae 4 xd ST P 12V SMALL 15941 8860 AK i i A 3 du 5 c mie ds q a gs 5 E y 0502 gt 339 23 m 23 45 5 5 2870 KDS181 47uE _ 0 sg JOE 000000 00 000000 UU eo o e 1 aa T T oo an C MULTI PW SW ape 5 5288385 E HH R853 B EA E zi MORD De eae d mh aaa E B e t um T RT1C3904 1112 55 E 2888888 Ss 0803 E C8000 1 2V_VDDC_MST lt e HDMI 3 e 1 2 2u T e 16v V 51800 3 3V MST JTP 1127WEM 7K R863 2 4 3 3 MULTI 13 3V MULTI 5 dix 864 A C812 R888 3 5V_MST lt e e 1 SYS RESET 0803 R887 C814 20511 33K TES ar me 4 Only Divx E 1C800 1 READY C839 2 2078 rov RESET i MODE SELECTION N SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC GElectronics xj MODEL DATE I ELECTRONICS BLO
15. EDID data 1 Analog RGB 128bytes gt __ 1 2 7 9 A 0 00 FF FF FF FF FF 00 60 01 00 Of 10 01 15 01 08 08 46 27 78 OA 09 BO A3 57 49 9c 25 20 11 49 48 A1 08 00 45 40 01 Ot 61 40 01 30 01 Ot Ot Ot 01 01 tB 21 50 AO 51 OO 1E 04 48 88 40 35 00 BC 88 21 00 00 1C oE 00 80 51 50 40 80 37 00 Bc 88 21 00 18 00 00 OO FC 00 4c 60 47 20 54 56 oa 20 20 20 20 20 20 20 00 00 00 Fo 70 00 sF 1 44 oF 00 OA 20 20 20 20 20 20 00 55 2 HDMI 1 256Bytes 2 4 5 6 7 9 ajelo 0 00 FF FF FF FF 00 6D ot 00 0t ot o1 ot 10 01 15 01 o3 80 46 27 78 OA 9 Bo 57 49 90 25 _20 11 49 48 21 08 00 45 40 ot 01 61 40 01 01 01 01 30 01 01 01 01 01 01 01 1D 00 72 51 DO 20 6 28 40 55 00 C4 21 00 00 1 18 121 so ao 51 oo 30 00 DO 00 26 72 00 00 E0 10 16 20 58 2c 25 00 ca 21 00 00 9 00 00 00 Fo 00 00 00 00 00 00 00 oo oo 00 2 3 HDMI 2 256Bytes
16. SPE x I IHE 11003 P 24V SMALL 15V AVV gt 16V_NTP L J er 1043 C1046 C1058 P 68uF lus lus 35V 19 221NCH 11004 3 1 PINE 81010 P_3 5V lt MO D 3 120 ohm Fc1045 1057 uu 25 38755 0 1007 Zw 0 0luF 01005 16V 50V 26 32INCH 2 6 321NCH 7 B i 26 32TNCH 1000 AUDIO OUT 2 R 4 7k pi 11012 AUDIO OUT 81004 FW20020 245 P_12V_SMALL_15V lt oe gt 412V AUDIO 120 ohn 1075 1076 0 47uF cow 26 321NCH 25V 50V R1003 E 32INCH FUER 10K 25 38755 E 7 01000 4 e Qe gt 24V SMALL 15V Ez READY 24V 24V Qe e D pP 24V SMALL 15V GND GND e 9 P 24V SMALL 15V 4 GND GND e e 3 57 XEM 0 DP 3 57 3 5V 3 5V amp 3 5V MULTI GND GND e A 19 221NCH GND GND 6 R1028 0 im EXCEPT BIGCMO P 12V SMALL 15V 4 e Ge a IW ON 0 e OA 28C3052 2V A Dim amp C 01002 B 1047 DISP EN VAVS ON 2V P Dim 10K 26 32INCH BIG LED Block GND P Dim2 Error out 81071 R1030 0 100 3 5V_MST 3 5V_MULTI A A z BIG 03 0 R1002 R1005 j Fs INCH 10 1 2 e 5 4 81032 06 2 R1080 I DI dm 10K 4 BIG 160 2 2
17. comp 1058 C1039 l LUF 50V 1C1004 AP1117EG 13 ADJ GND gt 5 USB Es C1041 100uF 16V LG ELECTRONICS MODEL 0 DATE BLOCK rownn ISHEET 9779 LGE Internal Use Only LG Electronics Inc
18. e 85 oUT2 p e o R600 0 1uF EAP 61006401 3 3K LF Main AMP PVDD2B 1 1019 61 R654 R667 me QUT2B 2 c 2 rebuke das 1 SV AVDD AVDD PLL 01luF L611 600 him DVDD PLL OUT2B 1 J p gt SPK_R 10uF Ib SE BI le MLB 201209 0120P N2 16V TESTO GND PGND2B_2 e 1 8V DVDD C604 C607 uF 0 1luF bas AMP GAIN X 4 a 1 N EA ea ea a a E EA CT Een e ed eet ajaj A el AUDIO OUT OP AMP AUK a HH 12V AUDIO B IC601 1 8V_DVDD C614 C6234 22000pF t C609 C610 10uF 16V luF e z rj ig T R673 0 Co R606 9324 OUT4 s s 8 T 03 m MULTI PW SW d 607 210210 10000 MNT LOUTC W Ye a L R605 iu 4 1 m 50V R609 6 8K MNT L AMP MA i INPUT1 INPUT4 oO co wm i cu 12V_AUDIO KH HH C628 INC PE I MNT R AMP Wy INPUT2 INPUT3 50V 50V READY cl READY 635 EE ME du INPUT2 INPUT3 e 10K um ELS WES RT1C3904 T112 R617 e 1K MNT_ROUT lt e 2 C633 6800pF 50V AUDIO OUT OPTION BLOCK N SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURE
19. gt 80 41 C832 0 047uE 48 8 247 9 47 52 GP10152 12C OUT 503 14 R03 4 7 A lt lt 18 CVBS1 GP10151 12C_0U 502 1 831 41 C834 q 0 047 GPI0150 12C_OUT_MUTE 144 TV R857 41 c836 0 047uF 50 cveso vppc_4 14 62810 8830 47 1 VCOMO cup 1 2 i 520 33 4 AVDD_LPLL 141 C850 0 01 2 LL ly e 33 5 e MNT VOUT T CO a3 CVBSOUT LVBOM 140 e 3 LVBOP 39 MAIN SII 8815 47 C868 55 SIFOP LVB1M 8876 AAA AT ca amp 9 1 0 58 SIF OM LVB 1 VDDC 1 LVB2 SIDE LIN 856 2 2u0F 588 AUL5 LVB2P 135 SIDE f 2 212 591 2085 4 e of aov 26 321NCH 26 321NCH MNT L lt e 312 109 614 4000712 132 RL ON R8037 88007 MNT AMP B88la 20 62 AUOUTR2 0 33K RETE AA ALL AUOUTLI T is 0 REA o C871 26 321NCH R847 100 AUOUTRI si gt 129 4 TUF 0804 _ 5 2 10V RT1C3904 1112 oR 3 2 o inen e a a ui D a ua 8886 C855 gp 0luF ddusssudsssdsdsssadsdzdsusssss zussssq8333333453335424242322323323335 POWER DET fae 15 1530 1 AUDIO OUT OPTION BLOCK E E EI 10K aro of op SAO e a X00 al cl ES EZ ES S ot lio P_24V_SMALL_15V lt S 3 ggg 4 E 05181 449343334843 e 74 4 E
20. 069 v2 5 18 12K 100pF 50V closed IC1007 EADY gt 3 3V_MULTI_MST e C1028 READY C1062 C1063 R1067 100uF 201002 Sl 0uF 0 luF 3g 100K 16V 3 6V i T R1064 SR8043 10K 470K 2017121 At5V_MULTI AP_12V_SMALL_15V 19 22INCH 26 321NCH 11005 3 11006 120 ohm 120 ohm 01003 EADY R1049 Tus 04813 C1021 33K 68uF Y EBK60706901 35V e NUR 26 321NCH ose x 19 22INCH 33 11007 at re EUN 1 e 7 AO t p 5V_ 12V_LCD 10K C1005 120 ohn R1050 R1051 R1052 1009 C1010 0 1uF 2 2 2K 2 2K 100uF 0 01uF PANEL ON R1048 21 167 Tw 10K 01001 md R1020 RT1C3904 7112 10K 12 P_3 5V 11 A SERT D43 5V MULTI C1019 C1021 c1061 READY 10uF 0 01uF 100uF 201001 T 1 16V 3 6V Tow ur zl y R1069 1 6K C 71 3904 112 POWER Sii AN y 10K E i OUT 6 8V KA t C1025 C1026 C1029 C1033 n c104 10uF 10uF 10uF 0 luF m 0 luF us dee 50V E peni gen EA e e 1C1006 ez 5 A021073AIL P 12V SMALL 15V BU R1026 A NR8040T3R6N lt 330 11009 R1025 TV 110 a 11008 500 TUNER C1030 1031 10uF 10uF 25V 257 C104 1042 e 0 1uF 100uF 16V
21. 2 USB 396KHz gt Restore HDCP Erase seriada Las 12C 82 B2 USB 3S86KHz isp p ES i gt 3 Click the Config button and Change speed 2 Speed setting 350 Khz 400 Khz MStar ISP Utility V4 4 3 6 Sees Qbnnect Dis Con Use USB Auto release USB Use SWI2C Communication Setting USB 31 Auto Detect pin 1 switch UART I2c Pull all Pin High SDAin SCLin C SDA out SCL out PINi0O Reverse High Port Type Speed 65 EX Roughly Speed 396 KHz SPI Setting USE SPI Labeli ISP Slave Address 0 92 Serial Debug Slave Address OxB2 USB 396KHz Elapsed Time 12C 82 2 4 Read and write bin file Click 1 Read tab and then load download file XXXX bin by clicking Read MStar ISP Utility 4 4 3 6 Unused Bytes Start Addr 0x00 C OxFF Checksum End Addr Batch File EISP Loade Elapsed Time 12 92 B2 USB 396KHz LGE Internal Use Only 5 Click 2 Auto tab and set as below 6 Click 3 Run 7 After downloading you can see the 4 Pass message MStar ISP Utility 4 4 3 6 4 J Restore HDCP Erase Config Connect Dis Con Device Load Ste D SWVSP H6_Mstar LH70_FRC 20080925_dvb bin 2008 09 25 2 5 56 24 Blank Type SPI C File Area Er
22. 5 75 BL2 0 SPRING gt COMP2_PB 20101 R108 500 75 BL2 E LUG S e GN2 CONTACT GN2 0 SPRING K COMP2 Y S R109 gt 75 20103 GN2 E LUG 5005 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 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR IHE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC SECRET GElectronics MODEL gt DATE BLOCK meor SHEET LGE Intemal Use Only LG ELECTRONICS Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes FAXO4045802 LP91J UNS DA Y JK200 SPG09 DB 009 JK201 EPIS RD E LUG RD O SPRING SIDE AV t3 5V e 16200 ST3232CDR e R202 100 D200 200 GND 30V em luF 16V OUT gt IN R203 0201 100 n OUT 30V 3 3 5V_MST 210202 21N emm luF 16V 2001 R204 SR205 4 7K 4 7K ih TXD SIDE_AV R225 E gt SIDE_RIN D205 22 R228 30V d 12K SIDE SIDE AV
23. ADIATION FILRE AND ELECTRICAL SHOCK HAZARDS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC DIAGRAM INCORPORATES WHEN SERVICING IF 15 SECRET GElectronics Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes bV MULTI gt 3 3V gt 1 2V 3 5V_MULTI lt 3 5V 574 e 161001 BD9130EFJ E2 R1044 10K 0UT 1 27V 41 2V VDDC C1059L C1017 P EADY i 2100 YS ee 16V 16V 3 3 C1014 1013 C1018 25 0 luF 10uF READY 16V 16V 6V C1055 2200pF R1 50V 2 e VO 0 8 14 R2 R1 ne AP1117EG 13 VO 1 25 1 R2 R1 QUT 00T 1 85V 11013 1 5 D 41 8V DDR Te 120 ohn Tun 0062 Vref 10 0 1381054 R1016 0 luF DE L0uF 10V 50V ADJ GND 120 1 T C1022 10uF 7 R1055 BERDE 2 lt 5 D41 8V 7 0 NTP AUDIO DSP IC1008 AP1117EG 13 EADY L1010 IN 00T 1 85V AUS e e D41 8V auct 120 ohm ETT Te NTP AUDIO DSP 0 1uF R1077 SR1022 J iur c1074 50V 120 1 50V luF 161007 3 5V_MULTI C1051 25V MP20045D0 LF 2 GND 10ur READY R1079 6 3V R1066 56 ui ES 4 1K R1081 READY POWER SW Em C1070 4 10K E R1073 2 2uF S 10V VIN 2 tas PG 47K 2 ES 7 m 25 VOUT 1 GND e t e e 3 6 21068 1 READY 2 2uF 2 Low 106301
24. AS VDDQ 9 5 DDR2 RAS CAS VDDQ 8 DDR2 CAS WE VDDQ 7 DDR2 WEZ VD 6 T R900 EDOS VDDO_5 DDR2 DOSOH O m VDDO 4 e DDR2 DOS1 56 VDDQ 3 5 VDDQ 2 5 R902 LDM VDDQ 1 DDR2 DOMO DQ R90 UDM DDR2_DOM1 56 R904 LDOS VSS_5 DDR2 DQSOM DDR2 DQS1M ORE 7 VSS_2 4 1 5 C 6 VSSQ 10 Gu VSSQ 9 VSSQ 8 Eum 7 T VSSQ 6 4 1 8V_DDR VSSDL VSSQ_5 A VSSQ 4 4 3 2 5 VDDL VSSQ 1 5 tous 0 01uF 10uF 50V 10V DDR2 MEMORY 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 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR IHE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC MODEL 5 DATE BLOCK eese SHEET ave LGE Internal Use Only SECRET LGElectronics LG ELECTRONICS Copyright 2011 LG Electronics Inc All rights reserved Only for training and service purposes RL_ON FAXO4045802 TH
25. CK ___ GHEET Copyright 2011 LG Electronics Inc All rights reserved LGE Intemal Use Only Only for training and service purposes FAXO4045802 LES LJ DDR2 DDR2_D 0 15 DDR2_D 0 15 e C904 C905 C918 C920 01 ur Ze 1000pF 1UF Z2 2uF V REF IC900 2 Close to DDR2 IC KAT51163OQOI HCFE7 DDR2 A 0 12 VREF DQO DDR2 D O Dol DDR2 DDR2_A 0 A 292 DDR2 22 1 DDR2 D 4 DDR2 A 2 Do4 2 DDR2 D 5 DDR2_AT3 295 DDR2 A 4 pee A4 DDR2 D 7 DDR2 A 5 207 AS DDR2_D 8 DDR2 A 6 xe DDR2 A 7 299 DDR2_D 10 DDR2 A 8 0910 A8 DDR2_D 11 DDR2_ATS Doli DDR2 A 10 0912 A10 AP DDR2_D 13 DDR2_A 11 0013 All DDR2_D 14 DDR2 A 12 0014 Close to DI 2 A12 Wore DDR2_D 15 EM T1 8V DDR ba 1 8V_DDR DDR2_ BAO VDB e Sode VDD_4 150 e 901 902 903 906 907 c908 C909 C910 C911 C912 C913 C914 C915 C916 C917 DDR2 MCLK m 0 01uF 0 01uF 0 01uF 0 01uF 0 01uF 0 01uF 0 01uF 0 01uF 0 01uF 0 01uF 0 01uF 0 01uF 0 01uF 0 01uF 0 01uF DDR2_MCLKZ READY CKE VDD_1 DDR2_CKE lt ODT DDR2 ODT cs VDDQ 10 e R
26. DR2 20 170 DONI L gt C804 C805 C806 Close to IC e C805 4 DD 69 e 7 as close as possible C806 f LGE4765A Matrix basic NON SRS MDATA 68 AAA 24 PC A 8814 41 843 0 26 DATA 9 161 Ra DDR2_D 19 HDCP EEPROM d R803 410 C846 1000pr 21 GND_10 166 e FW DDR2 2112 3 3 MULTI MST 8816 AAAAT C845 f 0 047uF 8 ATA 6 MM PCR 8818 42 C847 0 047uF 29 ATA 11 154 e e R838 41 C825 0 047uF 0 AVDD_D 6 10803 6 DDR2 218 88004 CAT24WC08W T 8817 e 8833 41821 0 04708 32 161 2 2411 1 TK ik 50 b 4 0 PAN DDR2_D 4 8836 412829 35 158 6 1 i e if ANC gt 3 3V_MST 010 OUT e pue 38 G i 9 SCL 88005 22 COMP2 PB o e 1 111 a 208 sc i e 3 3 MULTI MST ANN lt SCL COMP2 gt 8834 AAA LT 0828 0 041 40 6 508 50 Ragas 4 7K 8835 410 835 1000 41 G gt 88006 22 COMP2_P 883 of p 5 PANEL ON 8819 2 3 REP 52 804 41 C800 0 047uF 431 6 G 50 EN VAVS ON R815 47 C801 0 047uF A4 CVBS5 G 49 VI 8897 41 0 047 45 cvBs4 G 48 z SIDE
27. E BRIDING SUB_SDA 2 4 D401 TXCE2 d 406 lt R409 TXCLKE R R 272 LKE ON 19 221NCH 4 1K S4 TK idi L40 120ohm TXCLKE OKEY TXCLKE Li onm mmm 26 321NCH KEY2 TXCLKE A Um 0107 C 408 3 3V_MULTI_MST TXCE3 XCE2 470p ZI HS e 26inch AUO OPEN 50 507 TXCE3 rr 26inch SHARP Pull down 3 3V_MULTI_MST 4 7K 1 TXCE4 A uno 400 Y HD normal 1 TXCE4 READY R415 e 12507WR 12L R433 e NY m 0 2 0 P NON CMO FED 5V_ 12V_LCD 0 NON CMO 42FHD TXCOO R434 XCE0 C404 p 170 R428 0 l SD e agg ee qa 00 AUO SHARP 42FHD 3 MULTI MST 9 SMALL OPC GND 01 SMALL NC3 R400 KEY1 0 LOK e SMALL Seay 02 L407 R404 KEY2 0 AY XC02 ar 200hm 0 100 50V T e T W C SUB CL tici 7 2563052 TXCLKO GND TXCO3 LOG TXCO3 gt SMALL OPC EN see gt SMALL NC3 13 3V MULTI MST TXC044 gt SMALL NC4 IR 0 1403 RR e READY 20ohm hi p I R OPC_ENABLE C406 20402 C402 R438 0 R422 GND 5 6B 47pF 0 luF 470 50V 50V NON CMO 42FHD 4 8T 3 3V E IR OUT 5417 0 OPC OUTPUT 040 p ENABLE 3 5V R412 e C 0PC OUT READY R424 OPC FABLE 10K IR 0UT OPC ENABLE R423 OPC EN R413 e 8416 0 E DIM 0 7 LED 8 8022 0 IR OUT OUT R407 22 10K IR OUT Ya IR OUT i
28. I DO 50 5101 WP4 SIO2 RT103904 T112 LGD Joker LF Series 10BIT FHD LED ON OFF 5 Sass M i Q mo oni y EA 2 5 5 9 R843AA A33 READY O S Joker LF Series 8BIT FHD LED ON OFF 52 RXCJ g 0 8 E MCLKZ 0082 D 0 15 Small FHD 22 8BIT LED ON OFF 854 ox n n S p Q 26 FHD 10BIT LED ON OFF 52 RXCH de TAS amp ES mc Lone VW dies S 52 0 ed ex y gt A Sn y 52 RXOH 858 0 4 LEN alee 89 RER DDR2_D 2 a lt lt lt lt lt lt lt D D D D D D D 3 3V MULTI MST Hal HPD_MST_2 3 zu 88 Rw DDR2_D 0 52_RX14 10 6 gt DDR2_D 7 EEPROM dst odas ms an yl pus pour am MAIN_EEPROM_ATMEL x e 8 8 AA 222 2113 10801 C866 7 p 8869 10 9 84 A D 10 AT24C256C SSHL T 10uF 0 1uF ione 8 0 0 8 FAN DDR2 218 3 3V_MULTI_MST RERUM T MN mp 2 51 RKC 872 0 1 82 DDR2 2115 8873 10 12 8 e o 51 RX04 2 0 80 x 1 RX04 819 0 4 2 0014 38027 38028 E Cw poste o 6255 pp te 51 RX1 880 0 6 1 e S1 RIA R890 0 1 6 02094 pue FEP_SCL e on 22 i i 1 RI2 89 0 9 0082 0058 4 nosow e EP SDA i 51 RX24 R89 10 20 B DDR2 DQ 173 DR2_DOSOP MST 1 21 LUGE GND_ 2 E B_DDR2_DQ lt 00 0 es pe 804 dal veu D
29. LTI E A 45V HDMI 3 0302 HDMI3 EEPROM CATAL 8051845 C 1K 16302 5 R312 3 CAT24C02W1 GT3 HPD_MST_3 0302 e e E 319 lt R320 010 ur Liv 8329 100 JACK_GND DDC_WP R317 100 AN 3 3V HPD R318 100 5 45V POWER e DDC CEC GND TM SDA CAE 68K JP305 EH DDC_SDA3 READY SCL gt DDC_SCL3 0303 R316 85583 m ae _ READY Yws3011716 CL gt TMDS3_RXC READY CLK_SHIELD Some R313 CL m gt TMDS3_RXC G ATAQ gt TMDS3 RX0 D304 SHIELD orco 0 rm gt TMDS3 L L TMDS3_RX1 ATAL_SHIELD 1 TMDS3_RX1 2 m gt TMDS3_RX2 ATA2 SHIELD 2 rm ce gt TMDS3_RX2 KJA ET 0 0032 JK303 N SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION SECRET Lo ELECTRONICS MODEL mo IE THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC GElectronics BLOCK s SHEET Copyright 2011 LG Electronics Inc All rights reserved LGE Intemal Use Only Only for training and service purposes REAXOJ0425802 LEO PANEL WAFER TXCE0 TXCEQ TXCE1 TXCE1 TXCE2 TXCE2 TXCE3 TXCE3 TXCE4 TXCE4 TXCLKE TXCLKE TXCLKO TXCLKO TXCO0 TXCO1 TXCO1 TXCO2 TXCO2 TXCO3 TXCO3 TXCO4 TXCO4 TXCEQ 0 TXCE1
30. OPC ENABLE USE LGD Module fN e o EM 0 9 jd 3V MULTI 57 53 31 MULTI MST 28C3052 SHARP 42FHD A 47K ENS 0401 SHARP 42FHD READY R442 R440 READY e 4 7 bis 4 TK AUO FHD READY 8444 0 4 R443 R441 NON AUO 42FHD 0 3 5V_MST RU R403 3 5V_MST 10K A 1402 R411 4 7K gt C401 200hm 100pF Tw 8408 4 R443 R421 R423 R434 0402 10K LED_R 7 R444 R431 R442 R420 R416 R417 R418 R438 R429 R428 R437 R433 R427 R426 R436 R435 2863052 51 47 46 45 44 43 42 41 28 27 26 25 12 11 10 9 SHARP 32INCH FED X X VESA x O O O R434 O O O O CON ROI K We X XO P amp SHARP 32INCH FHD 1250718 031 19 221NCH 1408 lt 1409 KEY2 lt AED 19 221NCH dames 19 22INCH C409 410 100 00 Tw 50V 0 KEY2 GND I THE N SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SECRET ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC GElectronics I MODEL DATE I ELECTRONICS BLOCK evos SHEET Copyright 2011 LG Electronics Inc All rights reserved LGE Intemal Use Only Only for training and service purposes FBFAXO4045802 PAL
31. S IMPORTANT FOR PROTECTION FROM X RADIATION ee at ee SECRET Lo ELECTRONICS MODEL DATE THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC GElectronics BLOCK avoro SHEET Copyright 2011 LG Electronics Inc All rights reserved LGE Intemal Use Only Only for training and service purposes 3 3V MULTI MST 1 3 3V MULTI MST
32. S 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 reconnecting any receiver electrical plug or other electrical connection c Connecting a test substitute in parallel with an electrolytic capacitor in the receiver CAUTION A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard 2 Test high voltage only by measuring it with an appropriate high voltage meter or other voltage measuring device DVM FETVOM etc equipped with a suitable high voltage probe Do not test high voltage by drawing an arc 3 Do not spray chemicals on or near this receiver or any of its assemblies 4 Unless specified otherwise in this service manual clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner cotton tipped stick or comparable non abrasive applicator 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 manu
33. al lubrication of contacts in not required 5 Do not defeat any plug socket B voltage interlocks with which receivers covered by this service manual might be equipped 6 Do not apply AC power to this instrument and or any of its electrical assemblies unless all solid state device heat sinks are correctly installed 7 Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead Always remove the test receiver ground lead last 8 Use with this receiver only the test fixtures specified in this service manual CAUTION Do not connect the test fixture ground strap to any heat sink in this receiver Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged 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 p
34. am 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 uy gt e BeBe WAS o TLLA WILL zu lt ILE CQ Um cm m 6 Al 0 ii A t ta Q Es UO c gt o o Copyright 200916 Electronics Inc All right reserved 18 LGE Internal Use Only Only for training and service purposes FAXO4045802 Geo 247 NON 2AUDLO OUT JK101 PPJ238 01 RD1 E LUG COMPONENT AV IN AUDIO OUT JK102 PPJ239 03 RD1 E LUG o RD1 0 SPRING RD1 O SPRING_2 AV AUDIO OUT R116 CVBS
35. ard 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 5 LGE Internal Use Only SPECIFICATION NOTE Specifications and others are subject to change without notice for improvement 1 Application range 3 Test method This spec sheet is applied to LCD TV used LP91J chassis 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification 2 Specification EMC CE IEC Each part is tested as below without special appointment 1 Temperature 25 5 77x9 F CST 40x5 C 2 Relative Humidity 65 10 3 Power Voltage Standard input voltage 100 240 V 50 60 Hz Standard Voltage of each products is marked by models 4 Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM 5 The receiver must be operated for ab
36. ase Area Partial Erase Elapsed Time 10 35 12 92 B2 USB 396KHz Flash Status 00 4 1 2 Using the Memory Stick USB download Service Mode 1 Insert the USB memory stick to the USB port 2 Automatically detect the SW Version gt S W download process is executed automatically 3 Show the message Copy the file from the Memory 4 After Finished the Download Automatically DC Off gt On 5 If the TV is turn on check the updated SW Version and tool option 4 2 Input tool option Adjust tool option refer to the BOM Tool Option Input PCBA Check Process Area Option Input Set Assembly Process After Input Tool Option and AC off Before PCBA check you have to change the Tool option and have to AC off on Plug out and in If missing this process set can operate abnormally 1 Profile Must be changed the option value because being different with some setting value depend on module maker inch and market 2 Equipment adjustment remote control Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes 10 3 Adjustment method The input methods are same as other chassis Use IN START key on the Adjust remote control If not changed the option the input menu can differ the model spec Refer to Job Expression of each main chassis assembly EB for Option value Caution Don t Press IN STOP key afte
37. d in the calibrated ch by CS 1000 2 Operate the zero calibration of the CA100 or CA 210 then stick sensor to the module when adjusting 3 For manual adjustment it is also possible by the following sequence 1 Select white pattern of heat run by pressing POWER ON key on remote control for adjustment then operate heat run longer than 15 minutes If not executed this step the condition for W B may be different 2 Push Exit key 3 Change to the AV mode by remote control 4 Input external pattern 85 white pattern 5 Push the ADJ key gt Enter 0000 Password 6 Select 3 W B ADJUST 7 Enter the W B ADJUST Mode 8 Stick the sensor to the center of the screen and select each items Red Green Blue Gain and Offset using A Y CH key on Adjustment remote control 9 Adjust R G B Gain using key on Adjustment remote control 10 Adjust three modes all Cool Medium Warm Fix the one of R G B gain and change the others 11 When adjustment is completed Enter COPY ALL 12 Exit adjustment mode using EXIT key on Adjustment remote control CASE First adjust the coordinate far away from the target value x y 1 X y gt target i Decrease the 2 X y target i First decrease the B gain ii Decrease the one of the others X gt target y lt target 1 First decrease so make y a little more than the target 11 Adjust x value by decreasing the R 4
38. d 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 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 shape the end of each of three leads remaining on the circuit board Bend into a U shape the replacement transistor leads 4 Connect the replacem
39. djustment must be performed in the circumstance of 25 C x 5 C of temperature and 65 96 10 of relative humidity if there is no specific designation 4 The input voltage of the receiver must keep 100 220 V 50 60 Hz 5 Before adjustment execute Heat Run for 5 minutes at RF no signal 3 Adjustment items 3 1 PCB assembly adjustment items 1 Download the MSTAR main software IC800 Mstar ISP Utility 1 Using D L Jig 2 Using USB Memory Stick 2 Input Tool Option Area option 3 Download the EDID EDID datas are automatically download when adjusting the Tool Option2 4 ADC Calibration RGB Component 4 Check SW Version 3 2 SET assembly adjustment items 1 Input Area option Adjustment of White Balance Auto amp Manual Input Tool Option Area option Intelligent Sensor Inspection Guide Preset CH information Factoring Option Data input So 2 3 4 5 6 4 PCB assembly adjustment method 4 1 Mstar Main S W program download 4 1 1 Using D L Jig 1 Preliminary steps 1 Connect the download jig to D sub RGB jack Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes 2 Download steps 1 Execute ISP Tool program the main window Mstar ISP utility Vx x x will be opened 2 Click the Connect button and confirm Dialog Box MStar ISP Utility 4 4 3 6 El semi conduciu Elapsed Time 92 B
40. e LED Assembly Pass Check LED status On Display Unit Repeat A PROCESS Change Panel Link Cable Fail Or Module Check Panel Link Cable Or Module Change Inverter Connector Or Inverter Check Inverter Connector Or Inverter Pass Check Output of IC802 gt Change 1 802 Fail Check LVDS Cable gt Change Module ai T Copyright 2009 LG Electronics Inc All right reserved 14 Only for training and service purposes Re soldering or Change defect part of IC1001 1003 1007 LGE Internal Use Only No Raster on PC Signal Check Input source Cable And Jack Re soldering or Change the defect part Check the Input Output Of J202 Check the Input Output Re soldering or Of IC201 Change the defect part Check RGB EDID Data Re soldering or Change the defect part Check the Input Output Of IC800 Repeat A amp B Process No Raster on COMMPONENT Signal No Raster on HDMI Signal Check Input source Cable And Jack Check Input source Cable And Jack Re soldering or Fail Change the defect part Check the Input Output of JK301 JK302 Check The Input Output Of JK101 Re soldering or Fail Change the defect part Pass Re soldering or Change the defect part Check the Input Output of IC300 IC301 Fail Ch
41. eas ls zi 10uF lu lu 3 3 L605 35V 35V P600 120 ohm I IU I gt vm SMAW250 HO4R D 1 8V_DVDD E nc E Poss MLB 201209 0120P N2 Tv MLB 201209 0120P N2 T 01 100003 i T Lam OS SPK R 15211 T m RUE 5 es uae cere SPK_R e 3 3 390pF 944 og rt amp oPK L C621 islam TO 42 R625 Ser EAPCT008401 ze R623 is 2 R610 R638 SPK L 12 12 Q0 01uF 1609 5 e gt SPK_L fo SV AIST C616 MLB 201209 0120P N2 C611 200p n 22000 Lec R630 luF 1 N c4 N C SD E BS a eal ee 0603 ajej es RT1C3904 T112 2651 AUDIO OUT OP AMP BCD e a e BSTIA NC Ico SW RESET AS324MTR E1 READY R631 VDR1A THERMAL VDR2A S C608 57 624 1 A R627 R601 100 Tur RESET BST2A MULTI PW SW C606 e AD PGND2A_2 1000pF T DVSS 1 PGND2A 1 220025 Pug l 22000pF L610 vss 10 2 2 MLB 201209 0120P N2 6 TR SPK R4 Hm 129 MCLK CLK I 6 00 OUT2A 1 n 124 0648 0044 R628 0 01uF IN24 13 3V MULTI MST VDD I0 NIP 3200L PVDD2A 2 416V hern 1607 24 7 TT390pF AD 9060 1 8V AVDD C605 c mE i p 25 2F R671 IN2 nee l5 e lt 634 js C673 e e e 601 AGND_PLL PVDD2B_2 ee 390pF 15 1r 047
42. eck HDMI EDID Data Re download HDCP Re soldering or Change the defect part Check the Input Output Of IC800 Re soldering or Change the defect part Check the Input Output of IC800 Repeat A amp B Process Repeat A amp B Process Copyright 2009 LG Electronics Inc All right reserved 15 LGE Internal Use Only Only for training and service purposes No Raster On AV Video S Video Signal No Signal On TV RF Signal Pass Check Input source Cable And Jack Check Input source Cable And Jack Pass Check The Input Output Of TU500 Pass Check the Input Output of IC800 Pass T Repeat A 8 B Process Repeat A amp B Process Check The Input Output of JK102 Re soldering or Change the defect part Re soldering or Change the defect part Pass Check the Input Outpu Re soldering or of IC800 Re soldering or Fail Change the defect part Change the defect part Fail No Sound Check The Input Sourse gt Change The Source Input Fail Re soldering or Change the defect part Change Speaker Pass Check The Input Output Of IC600 Check The Speaker Check The Speaker Wire Copyright 2009 LG Electronics Inc All right reserved 16 LGE Internal Use Only Only for training and service purposes BLOCK DIAGRAM 40198 UU0D SGA 40 99UU09 SQA
43. ent 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 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 compo
44. ic 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 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 avoi
45. ition 4 Select 0 ADC calibration RGB by using 2 Equipment Adjustment remote control and press ENTER 3 Adjustment method 5 ADC adjustment is executed automatically The input methods are same as other chassis Use IN 6 When ADC adjustment is finished this OSD appear START Key on the Adjust Remote control Refer to Job Expression of each main chassis assembly for Option value Caution No need to connect external input cable Caution Adjustment result is applied after SET Off On 5 2 Adjustment of White Balance For Automatic Adjustment 4 5 Check SW Version Purpose Adjust the color temperature to reduce the 1 Method deviation of the module color temperature 1 Push In star key on Adjust remote control Principle To adjust the white balance without the saturation 2 SW Version check Fix the one of R G B gain to 192 default data Check SW VER and decrease the others Adjustment mode Three modes Cool Medium Warm Required Equipment Mode Use 1 Remote control for adjustment 2 Color Analyzer CA100 or CA 210 or same product D E LCD TV ch 9 puis uat ta should be used in the calibrated ch by CS 1000 3 Auto W B adjustment instrument only for Auto adjustment Tool Option 2 Area Option 5 2 1 Adjustment of White Balance For automatic adjustment COLOR ANALYZER gt Option 1 Opti
46. lity exists that must be corrected before the receiver is returned to the customer Copyright 2011 LG Electronics Inc All right reserved Only for training and service purposes rer Leakage Current Hot Check See below Figure Plug the AC cord directly into the AC outlet Do not use a line Isolation Transformer during this check Connect 1 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 To Instrument s CONDUIT etc exposed METALLIC PARTS 1 5 Kohm 10W When 25A is impressed between Earth and 2nd Ground for 1 second Resistance must be less than 0 1 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 PRECAUTION
47. nent temperatures Copyright 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 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 bo
48. nly HDMI DVI IN 1 via DVI to HDMI Cable Vie Ha EE 59799 VESAWXGN _ 1920x1080 soe WUXGA 8 HDMI input DTV Specificat No Rc Proposed Remarks Resolution H freq kHz V freq Hz Pixel Clock MHz 4 moxep s __ as wo e moxse som howe 4 wo ns s ars som na mwe 10 1920x1000 28125 sooo howie _ wo n howie messo _ __ wo gt 17 Copyright 2011 LG Electronics Inc All right reserved 8 LGE Internal Use Only Only for training and service purposes ADJUSTMENT INSTRUCTION 1 Application Range This specification sheet is applied to all of the LCD TV LP91J chassis 2 Specification 1 Because this is not a hot chassis it is not necessary to use an isolation transformer However the use of isolation transformer will help protect test instrument 2 Adjustment must be done in the correct order 3 The a
49. on 2 System Control System Control 2 Power Off History Davinci Auto Test Internal Pattern of Mstar RGB I2C serial communication PC LP91J Support RS 232C 8 12C Interface For ADC DDC Adjustment 1 Enter the adjustment mode of DDC Set command delay time 50ms Enter the DDC adjustment mode at the same time heat run mode when pushing the power on by power only key Maintain the DDC adjustment mode with same condition of Heat run gt Maintain after AC off on in status of Heat run pattern display 2 Release the DDC adjustment mode Release the adjust mode after AC off on or std by off on in status of finishing the Hear run mode Release the Adjust mode when receiving the aging off command WB 00 FF from adjustment equipment Need to transmit the aging off command to TV set after finishing the adjustment Check DDC adjust mode release by exit key and release DDC adjust mode 3 Enter the adjust mode of white balance Enter the white balance adjustment mode with aging command F3 00 00 4 Release the adjust mode of white balance Enter the white balance adjustment mode with aging command F3 00 FF Luminance min value is 150cd in the Cool Medium Warm mode For LCD Copyright 2011 LG Electronics Inc All right reserved 12 LGE Internal Use Only Only for training and service purposes 5 2 2 Adjustment of White Balance for Manual adjustment 1 Color analyzer CA100 CA210 should be use
50. out 5 minutes prior to the adjustment 4 Electrical specification 4 1 Model Specification Broadcasting system PAL SECAM B G D K PAL 1 11 B M Available Channel PAL _ NTSC Australia BG China DK Australia BG VHF UHF E2 C69 2 78 C1 C62 C1 C75 CATV 521 547 1 71 51 641 52 544 5 Video Input PAL SECAM NTSC A Rear 1EA 26 32LK310 311 Rear 1EA Side 1EA HDMI Input HDMI DTV Only PCM MODE 26 32LK310 311 Rear 2EA Audio PO Audio Component AV 2EA _______ UR Input 22103101311 AV Audio Input Remote control Commercial USB Input 1EA Divx MP3 JPEG Only Side Copyright 2011 LG Electronics Inc All right reserved 6 LGE Internal Use Only Only for training and service purposes 5 Component Video Input Y PB PR Specification No Remark Resolution H freq kHz V freq Hz Pixel Clock MHz mao Jea IET ESTATE 2 mao 1954 SOIVDVD4BOSS _ 6 RGB Analog PC RGB DTV NOT SUPPORT Specification Proposed Remark Resolution H freq kHz V freq Hz Pixel Clock 640 350 31 468 70 09 25 17 640 480 31 469 59 94 25 17 VESA VGA Ex 1360 768 47 72 59 799 84 75 VEGA MA NENNEN Copyright 2011 LG Electronics Inc All right reserved 7 LGE Internal Use Only Only for training and service purposes 7 HDMI input PC Spec out but it can be shown the picture at o
51. r completing the function inspection 4 3 EDID Download method Hecommend that don t connect HDMI and RGB D SUB cable when downloading the EDID If not possible recommend that connect the MSPG equipment There are two methods of downloading the EDID data 4 3 1 1st Method EDID datas are automatically downloaded when adjusting the Tool Option2 Automatically downloaded when pushing the enter key after adjusting the tool option2 It takes about 2 seconds 21725 MODEL 20 SW VER WAL Mode Use 2 4 ADC CAL de 868 Component SD X Component HD 3 vL V LS x MODEL 821800 Home Use Component 0 Component HD 2 x E Tool Option 1 2 Area Option Area Option Opt 0 qe x Uption 4 3 2 2nd Method Caution Must be checked that the tool option is right or not If tool option is wrong HDMI EDID data could not be downloaded well 1 Press the ADJ key 2 Move to the EDID D L and Press the right direction 3 Press the right direction at Start 4 After about a few seconds appear OK then complete ADE ANUS 1 SB B C AUST PATTERN 4 3 3 RS 232C command Method 1 Command AE 00 10 Caution Don t connect HDMI and RGB D SUB cable when downloading the EDID If the cables are connected Downloading of EDID could be failed LGE Internal Use Only 4 3 4
52. rior to applying power to the Copyright 2011 LG Electronics Inc All right reserved 4 Only for training and service purposes unit under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge buildup or exposure of the assembly 3 Use only a grounded tip soldering iron to solder or unsolder ES devices 4 Use only an anti static type solder removal device Some solder removal devices not classified as anti static can generate electrical charges sufficient to damage ES devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ES devices 6 Do not remove a replacement ES device from its protective package until immediately before you are ready to install it Most replacement ES devices are packaged with leads electrically shorted together by conductive foam aluminum foil or comparable conductive material 7 Immediately before removing the protective material from the leads of a replacement ES device touch the protective material to the chassis or circuit assembly into which the device will be installed CAUTION Be sure no power is applied to the chassis or circuit and observe all other safety precautions 8 Minimize bodily motions when handling unpackaged replacement ES devices Otherwise harmless motion such as the brushing together of your clothes fabr
53. the Component 480i 260 Hz 100 96 Color Bar YPbPr signal into Componenti or 2 MSPG 925F Model 209 Pattern 65 3 Press ADJ key on Remote control for adjustment 4 Enter Password number Password is O 0 0 0 5 Select 0 ADC calibration Component by using A V CH and press ENTER B 6 ADC adjustment is executed automatically 7 When ADC adjustment is finished this OSD appear 4 4 2 ADC Calibration RGB 4 4 2 1 Method of Using External pattern 1 Required Equipments Remote control for adjustment MSPG 925F MSPG 1025 MSPG 3233 Pattern Generator 2 Process 1 Change the Input to RGB mode 2 Input the PC 1024x768 260 Hz Horizontal Color Bar signal into RGB MSPG 925F Model 60 Pattern 65 3 Press ADJ key on remote control for adjustment 4 Enter Password number Password is 0 0 0 0 5 Select 0 ADC calibration RGB by using A W CH and press 6 ADC adjustment is executed automatically 7 When ADC adjustment is finished this OSD appear LGE Internal Use Only 4 4 2 1 Method of Using Internal pattern j 4 00 5 assembly adjustment method 2 Process 5 1 Input Area Option 1 Change the Input to RGB mode 1 Profile Must be changed the Area option value because 2 Press ADJ key on remote control for adjustment being different of each Country s Language and 3 Enter Password number Password is 0 0 0 0 signal Cond
54. uF LD 1 2 4 R1033 0 10V WV 333 16 AUO R1034 0 w e ES 3 3 MULTI 5 READY 251072 81084 Se 0 0 READY a R1040 BIG_LGD SHARP FHD 4 7K R1035 PANEL STATUS e e gt 1082 0 OS MODULE PIN gt L 9 f to PIN No LGD CMO 09 AUO SHARP IPS SMALL R1023 NON OPC E DIM 18 INV ON A DIM INV_ON INV_ON INV_ON INV_ON 0 OPT 0 R1038 2 1008 C1012 1K R1060 V4 VBR A i ix T 20 out Err out NC Err out PWM DIM 2 x HD OPC OPC OUT 22 PWM DIM PWM DIM NC PWM DIM NC A DIM 31093 RIDIS _ 6 2K 24 Err_out INV_ON PWM_DIM GND PWM_DIM NC OI SV um MP20045DQ LF Z EP GND R1061 4 TK VIN 1 EN 3 5V_MST lt e 1 8 lom 4 READY T VIN 2 a ds PG 5 11011 7 120 ohm ms s 3 3 VOUT 1 3 6 GND 3 3V_MST lt e al lue 4 1 READY gt 3 6V 20 R1041 cla VOUT_2 FB so LT 167 DK 320106 5 50V R1062 7 100 R1042 R8044 10K gt 470K NSDCSDC CONVERTER VO 0 8 1 R1 R2 gt SM um A021073AIL P 12V SMALL 15V 5V MULTI A NR8O40T3R6N A 11001 295 e 11000 4 1006 _ 1071 _ 1020 mem 3 500 lw 10uF Lan 0 1uF NT T 16V T Tp 50V Tum Tuw A 10uF 10uF R1013 B iz 7 7 T 10 201004 E 100pF R1014 T 16V 1 50V 9 1K 1050 2200pF SYMBOL MARK OF THIS SCHEMETIC CIAL FEATURES IMPORTANT FOR PROTECTION FROM X R
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