LG Electronics 37LH41 Flat Panel Television User Manual
Contents
1. ince eae SPDIF OPTIC JACK M03316 cer oto 1000 t 55 uST1223 004 t1010 SPK L 3 TA DEM A Er E 4936319001 m HHSV AMP 100V 5 5 25 Fa 2 AP SX imm 201000 oer ibe i om 4 1 Lios at 1938 SPEAKER L EX 8 Tem eL i 102s 50 Sw HaT ge H9 ime 123 Tif cout 2 5 6 5 bi oer A1001 E yel Ste matii pe WT oro MASTER soe sen us s d poe nd EOM pee 5 ceni T Em 9 8 101000 25 5 aio SPEAKER R Ses AN4I584001 PVDDA 1 18 x E i z t DVODPLL 3 I iL TURE Tues Few IST meme sect 28 z 4 8 Fc E mS mE a RG oy ER s i on I 1019 t 3 le 7 CM Mit T ws sxt acer SDA SUB AMP 1003 100 1 SCL SUB AMPC P1004 A 100 1 MUTE EI EARPHONE AMP AUDIO SWITCH IC1008 TPAG110A2DGNHG4 11001 MC74HC4066ADR2G D1000 a ams m dev seen ub 5 6 ohare ap E E fec ear SHUTDOWN m Posto oeuf mew 4 0 gt ei2. THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR FILRE AND ELECTRICAL SHOCK HAZARDS PROTECTION FROM X RADIATION WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC 100 ore sno ELKE LGE7363C LF LGE73630 LF Eid eer soos p 0050 43 3v va0P mE DATALO Cas ims e Sov TS EA
3. E REB n EEPROM 5v ST 3 3v vooP ST evan fee BIB AAA 79923207700 A mor ISYSTEN soa nus toc sonata 12 toe SO UAR T 26195 d gps so ann HIE t8 Sk UAT x SES RS SS sx 1051 2 7 5V EEPROM 3V EEPROM pos 845 845 dup 80 Sog av vooP ST Be or k amp g 59 8 PANEL CTL TR or E Flesn w 1 SCL D TU SCL IO 5V tj root Flash WP 2 GUB 2N7002lF SYSTEM SCL es gigs A RR FS 80 SET pa 0102 OFT Rize bern 5 2 OPT f 04 s gt Ste E AS syses spa tan es SRS t 1 a129 J SDA A TU 5 100 Ko REI esi 1 SCLCA TU i R ERRE as ena IPS vv tog 1SCL_D TU FLASH MEMORY 498 Riad 100 piss 429 1 SDA D TU vum jus RTGS 100 Ha 3V VODP ST maa oreo Ei zl BLOS vw iuo per gt POWER_ON OFF 1 PALS ot scx fs Buea 3V VDOP_ST E RETE m Eo dm Snes Sar anms FBS AT pans EE Ka AT roS Tem n od 1 metu er ricum 208 02 E mcn Tx R236 0 pui cssc xum 5 E 1m E rm ar cu x100 hewa 3V VDDP ST 443 3V VODP ST aM m cis 1 p m 3 AE E BUA GO PRAES dor fet x M amp anoo
4. LNW INY AS NI Od ra ONAS A H ed xuxpivndha g ansa INOA AL IOS 1 195 00 21 OreAVILS NI H 1 195 LINO H l AL NI SAAD 198 NI cO LNO A LNWAL LNW ALG NI 295 LGE Internal Use Only 28 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes EXPLODED VIEW Copyright 2007 LG Electronics Inc All right reserved 29 LGE Internal Use Only Only for training and service purposes XR 10190 LGE7SeSC LF 33 310
5. 0 OO FFIFFIFFIFFIFFIFF 00 1 60 01 00101 0101 01 10 00111 01 03 18 73 41 96 0A 74 57 4 BO 23 20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40 o HDMI2 EDID DDC Display Data Channel Data 30 01 01 01 01 01 01 66 21 50 0 51 00 1 30 40 70 111213 4 151617 8 9 40 36 00 C4 8E 21 00 00 1 02 80 18 71 38 2 40 0 00 FF 00 1 60 00 01 01 01 01 50 58 2 45 00 4 8 21 00 00 1 00 00 00 FD 00 30 10 00 11 01 03 80 73 41 96 0 CF 74 57 4 0 23 60 58 1F 64 11 00 0A 20 20 20 20 120 20 00 00 00 FC 20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40 70 00 4 47 20 54 56 0A 20 20 20 20 20 20 20 01 F6 30101 01 01 01 01 01 66 21 50 BO 51 00 1B 30 40 70 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 02 103 04 00 0 1F 00 80 51 00 1E 30 40 80 37 00 10 4 8 21 00 00 1C F1 27 00 0 51 00 25 30 50 80 20 37 00 C4 8E 21 00 00 1 26 36 80 AO 70 38 TF 40 30 30 20 25 00 4 21 00 00 0 00 00 00 00 00 00 40 36 00 C4 8 21 00 00 1E 02 3A 80 18 71 38 2D 4
6. 2 e 200c 504 O59 14 as veo M SOL s moa Ried Sa 90 2 zi 52 1 s x waa DOC SDA 2 1 P z mas I L5 _ d EEH Gn qd 8 1 LER IN 2 Em Fa nar 45V ST ob 10903 R925 105 1 8 z 4 7 47K F Y 43 av vooP sT cea De TE S0A 3 i ii 33 ep t sro 85 85 85 cd 88 88 s8 9 Elion sss SIDE HDMI mnm ET matt ioco 100 Hes nar oo as Howr_sevs en 450 POWER LS wm mm o x x cee REMOTE Pass n4224 100 4 Aa 16 ODC SDA 3 Low CK HOMIa SDA R4225 100 Low LOW x x o t w Oc M R936 22 3 3V_VDDP_ST p in m id LEAD occus 0 n pot nome OF MEET e A bra ES 25 5 T Aw t i g R952 0 p 8 40 S I SSMO t ba Hora 7 oataor Portada 3 5 eo cec neore Jrowr cec 5 Ce ee p _ 4 R348 0 Bite 3 2 ua 2 oxtae_surel gt R949 901 DATA2 6 7 Z SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
7. Paos 280 LG30_26 37 42 _LG50_32 umapak a 4 000 PANEL POWER Sov 3 3v IR Las 43 318 MBW3216 501TF cago cans _ _ R32 baa O iuF E 1000pF ZZL47uFZHATUF 25 env 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 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC p fp Lea0_19 0424 LED GRE KST3905 MTF gago 1620 19 227 e a L630 L650 26 738 737 742 47 LED R PNM Dn m LG30 18 722 9 L630 L650 26 730737 47 KST3906 MTF n c 1530 19 227 4 co Len wenn Rest nese tee 7 oes 9 152 E 535 2 75 e pss 18 EZ gh 21 E T V IN 20 Bere 4
8. mes e BSZ AS m I me SENN 1 850 2 A PL a7 me Dn aoe LL ACAPLGSO SaRpno LPL Web i 3 JBU SAL ELEME JBUF TS DATAIO max e Z dS Eye JTS VALID Er ES 8 ER EE TS SIGNAL ops 9 8 map ECC us Peuri 278 010 71 maps 1 mos JeCH A O 44 male PCMCIA socia AE POM IORD N fe POH IONFCN Erin PON OE N PONE Forni pero POLREGN PONGEN PEM g894 N PCM RESET PCM CD N THE SYMBOL MAPK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC E Module CONTROL ses R amp LG30 19 22 Paoa B i r 5 LG30 LG50 3e 37 Z42 477 52 5 BRS Leap ag ee sais he 25055 15400 575 pas L650 R584 nm laco i Boso Tr NC SCL 27 moo or Keve ong Mami 40 39 SDA axor 38 3 P580 _ 25 mon 1 aoe 1630 19 22 E 50 pm enn i 24 RXoe new 25 TL vam 1877221 580 19 22 88201280807 23 ES 22 d 32 I LVAN 7 KEY4 Lva aPt 630 18 22 128 218 Lva Lva oP r 28 27 J LVA O
9. n E MERE R m E 3V AVDD OVE Flasn WP 1 AB RIS 22 FOMI LSE kan J 7 HOMI CEC MODUL sELECr R o Reed Rees nee nas v sr laci gie 4 ER t ae ERES UE ij x x o x o 8 E m r cios mE pets E seem x x o o x es Bre sm eis AE jer o x o x x sopa t soar 27 EES m 168081090 22 x of x x x o E gage Wap I cus ar puso eR Flash WP 2 sue War M 0 047uFp Cii ap A194 Jcow v 3oocor cia rov ise T neo 4 koe War d ooaj o ar B1S3 90 Figs 5 0 C156 55000pF 81 8 i 0 047uF R195 47 25 8 a cies WV RISS 2 gt FS ES orco s 5 5 Cr TOUT J8C1 CVBS IN 230 E cise reos d 100 pony 9 047uF F203 7 229 100 conan S HBE DTV MNT V DUT mm 10 EE eel aera 888 2 n i E JZ 14 ERA RE 1 0 EXPANSION theca tne mats is Bens fe tev 6532 1 m TIRE neo m 100 DIV MNT L 0UT inem Pt DTV MNT R OUT s 22 BN ness nion 50 14 2 evi Ser 4m waj Y
10. 0 opt 560 OPT aceti o reso Soer I ar ier clo a asipay SC_RE2 woa So So mmi p 520 THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES 103010702 SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION THE N SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR e THE CRITICAL COMPONENTS IN THE N SYMBOL M
11. 00 00 00 FC 70 00 4 47 20 54 56 OA 20 20 20 20 20 20 20 01 8A 0 1 2 3 4 5 6 7 8 9 AJ B C D E F 0 02 03 18 F1 47 8405 03 102 20 22 10 23 15 07 50 10 67 03 OC 00 30 00 98 25 01 11 00 72 51 DO 1E 20 20 6E 28 55 00 4 8 21 00 00 1 01 1 80 18 71 1C 30 16 20 58 2C 25 00 4 8E 21 00 00 9 8 0 0 8 40 20 E0 2D 10 10 96 00 C4 8E 21 00 00 18 8 0 50 DO 8A 20 0 20 10 10 3E 96 00 13 8E 21 00 00 18 60 26 36 80 AO 70 38 1F 40 30 20 25 00 4 21 00 70 00 1 00 00 00 00 00 00 00 00 00 00 00 00 00 2F 0 1 2 3 4 5 6 7 8 9 B C D E F 0 02 03 18 F1 47 184 05 03 02 20 22 10 23 15 07 50 10 67 03 0 00 10 00 8 20101 1D 00 72 51 TE 20 20 6 28 55 00 4 8E 21 00 00 1E 01 1D 80 18 71 1C 16 20 58 2C 25 00 4 8 21 00 00 9 8 0 DO 8A 40 20 E0 2D 10 10 96 00 C4 8 21 00 00 18 8C OA Analog RGB EDID table 50 DO 8A 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18 60 26 36 80 AO 70 38 1F 40 30 20 25 00 C4 8E 21 00 70 00 1A 00 00 00 00 00 00 00 00 00 00 00 00 00 27 0 1 2 3 4 5 6 7 8 9
12. TU TS OATATSI a se on Ex E R508 33 TU TS DATAISI 8570 i L507 p509 TU TS DATAL2T ue P je DAN F510 33 TU TS DATAL4 p571 FR I ee EEEN SM ss TU TS DATATO Co sci v vour I ceo a 250 600 3300F mers pota sopper roe 33 TU TS VAL d OPT 50 1 5600F ad T EX TUTS CU TU TS DATAO 71 TU TS SYNC TU TS VAL i E 4 1 tus testssdiie les ju o tues o tus SIRE me axe SCART PIN Ls ud ES SW 55590 E or SP ec eye 0 a529 LK Mem s C612 um S EN mo E mx ENI C Ed v T a527 0 532 0 8537 0 RB4i 0 cuni pn pia 630 19 722 L630 LG50 26 32 37 42 AT 52 em y s lt me se es iN a gk ce cope E Bre Bos 5 2 Bx hts B GND 4 e cho vd 4000pF ear 43 3V TU ond oos wn o sov I amp 8 8 g amp bod m IDTV WNT R OUT mizo m scenic 222 3 sanus Fr W Sr mes raso p 9 2 0508 OPT opt r cus Der 0 lor 0 P591 0 cer sci 1 50 dev opt nio neon Su soaactuc x 6 4 J SDA A TU 5V er 5 7 0 oer R588 0
13. 118 i J PC A IN teens in Multi option eS Am monz 2 PC COMP R Z Em SYWEOL MARK OF THIS SCHENETIC DIAGRAM INCORPORATES mI THE 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 SYMBOL MARK OF THE SCHEMETIC THE CRITICAL COMPONENTS IN THE LG Electronics Inc Apr 2008 P NO MFL41333504 Printed in Korea
14. Load File ni microcontroller Ver 2 0 Aug 2009 By Ho Jin Ko 3 Click the Load File Button and select the desired Hex File to download If no file is displayed make sure that the file format is selected as Hex file hex MICOM BUP CTD JECONL v PO 43 2 hex m MICOM FP C IDALIECONL Y 3 03 hex T MICOM EIP C IDALIECONL Y PO_W3 04 hex ma Ig BAC a2 Hex Files hex 4 Click Send Button LGE Internal Use Only METS ot Bh RIY PA LB TAE te TR F k http bbs 520101 com 11 USB S W Download option 11 1 Overview The USB download is for the quick service response via the S W upgrade and for applying the S W upgrade necessary for the board adjustment 11 2 How to dowunload 1 After turning on the set make sure that the display screen is turned on 2 When the USB Memory Stick with the upgrade file applied is inserted into the USB jack on the main board the following screen example is displayed after several seconds 3 Check the current version at Current TV Software Version Information check the S W version to upgrade at New Found TV Software Version Information and press the Enter button of the TV remote controller 4 Downloading is proceeded as shown at the below screen and when it is ended turning on off is automatically done When the automatic proceeding is not smoothly done manually perform the power On Off 5 When downloa
15. Temperature Y 0 283 0 002 Inner pattern isn t OXAA we adjust once more Medium 9 300k X 0 285 40 002 216gray 85IRE We can confirm the ADC values from OxAD 0XB2 726299 40 002 4801 0 6 1080i addresses in a page OxA2 0 293 20 002 Warm 6 500k K X 0 313 0 002 Manual ADC process using Service Remocon After enter Y 0 329 0 002 Service Mode by pushing ADJ key execute ADC Adjust b ushing gt key at ADC s CALIBRATION GOMBONENI g y Adjust Process will finish by execute I2C Command Inner pattern Inner pattern OxF3 0x00 l Resolution 480i i mpress Resolution 480i Caution Color Temperature COOL Medium Warm SETS One of R Gain G Gain B Gain should be kept on 0xCO and adjust other two lower than CO when R G B Gain are all CO it is the FULL Dynamic Range of Module 2 SUB B C ADJUST 3 W B ADJUST CREATUM Off Manual W B process using adjusts Remote control After enter Service Mode by pushing ADJ key Enter White Pattern off of service mode and change off gt on Enter W B ADJUST by pushing gt key at W B ADJUST Impress Resolution 1080i 3 W B ADJUST EZ ADJUST EZ ADJUST TEMPERATURE R GAN 1 ADC ADJUST 2 SUB B C ADJUST 4 WHITE PATTERN 5 2HOUR OFF G GAN B GAN 2 SUB B C ADJUST ER W B ADJUST 4 WHITE PATTERN Off Copyright 2007 LG Electronics Inc All right reserved
16. 00 00 Start Auto adjustment of white balance Wb 00 10 Start Gain Adjustment Inner pattern jb 00 wb 00 1f End of Adjustment If it needs offset adjustment wb 00 20 start wb 00 2f end wb 00 ff End of white balance adjustment inner pattern disappear Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 18 6 How to adjust 6 1 How to adjust automatically 1 The adjustment condition should be set by the Power On key 2 Perform the zero calibration of the Color Analyzer and place the probe close to the display center 3 Connect the communication cable RS 232C 4 Select the desired model of the adjustment program and perform the adjustment 5 After the adjustment is ended check the OK sign check the adjustment condition for each mode of the set Warm Medium Cool 6 Disconnect the probe and the communication cable to end the adjustment The adjustment should be started with wb 00 00 and ended with wb 00 ff and the offset should be adjusted when necessary 6 2 How to adjust manually 1 The adjustment condition should be set by the Power On key 2 Press the ADJ of the R C to enter into EZ ADJUST 3 Select 10 TEST PATTERN with the CH key and press the Enter key for 30 minutes or longer to perform the heat run 4 Perform the zero calibration of the Color Analyzer and fix the sensor with the 10cm or less distanc
17. 11 Doe 0 E 7 17 HE matal 1 vooa 5 I L 1 18 JMDATA 3 MDATA 19 igo hee vase pd 216 0014 22 004 0011 MDATA 11 E pid MDATA 27 E JMDATA 20 MDATA 101 I L MDATA 4 MDATA 26 L 2 Vsso 4 MDATA 21 MDATA S I I L IMDATA SI 2511 005 0010 1 22 8 E MDATA 6 241 MDATA 123 non JMDATA 7 E Le gt 007 gt NCB rm NS vopo 3 gno xs 7 mes 2 5V_DDR gs tus wal me m AP 0881 L N Jpaso 0053 gt x ases ox E voD 2 VREF R320 i 53 vss a wa re 300 gi 7 Bi2s2 x GM E 5 noma M WE gt M WEL inp 38815 nx M CAS 2 1 M_CASL oe EA RS S an M RISCO M RAS 9 5 Eum m iz E E c2 wat 121 pn 121 m Bao 5 31 JMADR 111 BAOL L huVann 11 r1 E BAADD us MADR S BALL de a m manni MADRI 10 5 4 JMADR BI MADAI 10 p c Owtniel MADRIO 2 1 JMADR 7 MADR 0 a a7 1 MADRI 1 gt a JMADR S MADRI 11 n w c wnents MADRI 2 O a JMADR SI 21 a ge MAAS MADRI3 D MADRI 4 MADR 3 L pnRI 4 vss v00 3 zu pem
18. 15 LGE Internal Use Only Only for training and service purposes After done all adjustments Press In start button and compare Tool option and Area option value with its BOM if it is correctly same then unplug the AC cable If it is not same then correct it same with BOM and unplug AC cable For correct it to the model s module from factory JIG model Don t push The IN STOP KEY after completing the function inspection 4 2 DPM operation confirmation Only Apply for MNT Model Check if Power LED Color and Power Consumption operate as standard Set Input to RGB and connect D sub cable to set Measurement Condition 100 240V 50 60Hz Confirm DPM operation at the state of screen without Signal 4 3 DDC EDID Write RGB 128Byte Connect D sub Signal Cable to D Sub Jack Write EDID DATA to EEPROM 24C02 by using DDC2B protocol Check whether written EDID data is correct or not 4 4 DDC EDID Write HDMI 256Byte Connect HDMI Signal Cable to HDMI Jack Write EDID DATA to EEPROM 24C02 by using DDC2B protocol Check whether written EDID data is correct or not 4 5 Serial number RS 232C Press Power on key of service remocon Baud rate 115200 bps Connect RS232 Signal Cable to RS 232 Jack Write Serial number by use RS 232 Must check the serial number at the Diagnostics of SET UP menu Refer to below Copyright 2007 LG Electronics Inc All right reserved 16 Only for training an
19. 39 5 Kg With BOX 46 2 Kg Copyright O 2007 LG Electronics Inc All right reserved 12 LGE Internal Use Only Only for training and service purposes nos 5 101 eo ADJUSTMENT INSTRUCTION 1 Application Range These instructions are applied to all of the LCD TV LD84D Chassis 2 Notice 2 1 The adjustment is according to the order which is designated and which must be followed according to the plan which can be changed only on agreeing 2 2 Power Adjustment Free Voltage 2 3 Magnetic Field Condition Nil 2 4 Input signal Unit Product Specification Standard 2 5 Reserve after operation Above 5 Minutes Heat Run Temperature at 25 C 5 C Relative humidity 65 10 Input voltage 220V 60Hz Adjustment equipments Color Analyzer CA 210 or CA 110 Pattern Generator MSPG 925L or Equivalent DDC Adjustment Jig equipment SVC remote controller Don t push The IN STOP KEY after completing the function inspection 2 6 2 7 3 Main PCB check process O APC After Manual Insult executing APC Download 1 Execute ISP program Mstar ISP Utility and then click Config tab 2 Set as below and then click Auto Detect and check OK message If display Error Check connect computer jig and set 3 Click Connect tab If display Can t Check connect computer jig and set MStar ISP Ullay V4 1 8 D x AHALA HDCP Erase T2C Definition Use USB E2PROM
20. 75 029 78 75 6 1280 768 47 78 59 87 79 5 WXGA HDCP 7 1360 768 47 72 59 8 84 75 WXGA HDCP 8 1366 768 47 56 59 6 84 75 WXGA HDCP 9 1280 1024 63 595 60 0 108 875 SXGA FHD Model only HDCP 10 1920 1080 66 647 59 988 138 625 WUXGA FHD Model only HDCP Copyright 2007 LG Electronics Inc All right reserved T LGE Internal Use Only Only for training and service purposes 12 Mechanical specification 12 1 37LG5000 No Item Content Unit Remark 1 Product Widt W Length D Height H mm Dimension Before Packing 936 4 293 8 684 4 mm With Stant After Packing 1195 253 665 mm 2 Product Only SET 18 3 Kg With BOX 23 Kg 12 2 42LG5000 No Item Content Unit Remark 1 Product Widt W Length D Height H mm Dimension Before Packing 1034 293 4 735 mm With Stant After Packing 1330 257 772 mm 2 Product Only SET 23 5 Kg With BOX 26 2 Kg 12 3 47LG50 No Item Content Unit Remark 1 Product Widt W Length D Height H mm Dimension Before Packing 1156 2 342 9 813 1 mm With Stant After Packing 1266 460 887 mm 2 Product Only SET 29 5 Kg With BOX 35 4 Kg 12 4 52LG5000 No Item Content Unit Remark 1 Product Widt W Length D Height H mm Dimension Before Packing 1291 7 342 9 892 2 mm With Stant After Packing 1386 411 976 mm 2 Product Only SET
21. LG50 26 32 37 42 47 52 1 DSi pes SET 1 3 3V AVDD OVI Leso_uozo 26 732 37 742 m VOLTAGE X A1259 1630 19 22 INPUT e outeur 216 OTF las PIN 22 A414112 LG50 LPL32 LPL37 AUO42 LPL47 SHARPS2 1000 0 iuF I 100uf 0 UF 0 0 1UF R1147 L630 CMOSe SHARP32 Tsv T 50 me R1135 LG30_LPL42 A PL37 PIN i R1143 L630 CHO32 R1243 LG50 LPL32 LPL37 PLAT R1265 LG50 CMO3e AUOZe CMO47 A14170 1 BTRES 3 3V MST Lite s d A1106 LG30 AUD42 LPL42 output ni ae cias cates Hous eum 91420 LGEO LPLS7 AUGAZ SHARPS2 cias Lr 4 pul go i Ria LE50 CM042 RS Ta TES 4 15V 16 16V A1442 LG50 CMO32 1 1106 4 1230 00227 azma ames P1445 1 37 PL32 101108 AZ11470 1 BTFE1 4 IN CASE OF L630 R1108 gae QUT PIN STATUS Low fa a outeur POWERON OFF 2575 cries ma D we E pue duo lo Ts 18V T mm o 1 pero 45V _t12V m m mm av Ma R1263 vont po m HL
22. Option 1 and Push OK button 3 Punch in the number Each model has their number 4 Completed selecting Tool option Copyright O 2007 LG Electronics Inc All right reserved 14 LGE Internal Use Only Only for training and service purposes MODEL 209 in Pattern Generator 480i Mode 3 2 Function Check PATTERN 65 in Pattern Generator MSPG 925 SERISE 3 2 1 Check display and sound Impress Resolution 1080i Check Input and Signal items cf work instructions MODEL 223 in Pattern Generator 1080i Mode 1 TV PATTERN 65 in Pattern Generator MSPG 925 SERISE 2 AV SCART1 SCART2 S VHS CVBS 3 COMPONENT 480i 4 RGB PC 1024 x 768 9 60hz 5 HDMI 6 PC Audio In Display and Sound check is executed by Remote controller 4 Total Assembly line process 4 1 Adjustment Preparation W B Equipment condition CA210 CH 9 Test signal Inner pattern 85IRE Above 5 minutes H run in the inner pattern power on key Adjustment pattern COMPONENT of adjust remote control 4 15 Pin D Sub Jack is connected the AUTO W B i i EQUIPMENT Adjust by commanding AUTO COLOR ADJUST y Adjust Process will start by execute 2 Command Inner 3 2 1 2 Confirmation pattern OxF3 OxFF We confirm whether 0xB3 4801 0 1080i address of Col Cool 11 000K K X 0 276 0 002 LG5000 Test Sianal EEPROM OxA2 is OxAA or not d T ahi S If OxB3 480i 0xBC 1080i address of EEPROM 0xA2
23. for training and service purposes 10 HDMI Input DTV No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remark 1 720 480 31 47 59 94 27 00 SDTV 480P 4 3 2 720 480 31 50 60 27 027 SDTV 480P 4 3 3 640 480 31 469 59 94 25 175 SDTV 480P 4 3 4 640 480 31 469 60 00 25 20 SDTV 480P 4 3 5 720 480 31 47 59 94 27 000 SDTV 480P 16 9 6 720 480 31 50 60 00 27 027 SDTV 480P 16 9 7 720 576 31 25 50 00 27 000 SDTV 576P 8 1280 720 37 50 50 00 74 176 HDTV 720P HDCP 9 1280 720 44 96 59 94 74 176 HDTV 720P HDCP 10 1280 720 45 00 60 00 74 250 HDTV 720P HDCP 11 1920 1080 33 72 59 94 74 176 HDTV 10801 HDCP 12 1920 1080 33 75 60 00 74 250 HDTV 10801 HDCP 13 1920 1080 28 125 50 00 74 250 HDTV 10801 50Hz HDCP 14 1920 1080 27 000 24 00 74 250 HDTV 1080P 24Hz HDCP 15 1920 1080 56 250 50 148 500 HDTV 1080P 50Hz HDCP 16 1920 1080 67 433 59 94 148 352 HDTV 1080P HDCP 17 1920 1080 67 500 60 148 500 HDTV 1080P HDCP 11 HDMI Input PC NoResolution H freq kHz V freq Hz Pixel clock MHz Proposed Remarks 1 720 400 31 468 70 08 28 321 HDCP 2 640 480 31 469 59 94 25 17 VESA HDCP 37 684 75 00 31 50 3 800 600 37 879 60 31 40 00 VESA HDCP 46 875 75 00 49 50 4 832 624 49 725 74 55 57 283 Macintosh HDCP 1024 768 48 363 60 00 65 00 VESA XGA HDCP 56 470 70 00 75 00 60 123
24. 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 prior to applying power to the Copyright 2007 LG Electronics Inc All right reserved zac Only for training and service purposes unit under test 2 After removing an electrical assembly equipped with ES devic
25. room 2 Ambient Humidity 50 1 RH 3 Supply Voltage 12V 4 Lamp Current 5 2 0 5 5 Oscillating Frequency 66 3KHz 6 Frame rate 60Hz 6 4 52 LCD Module No Item Specification Min Typ Max Remark Viewing Angle lt CR gt 10 gt Right Left Up Down 70 88 2 Luminance Luminance cd m2 360 450 Variation 1 25 MAX MIN 3 Contrast Ratio CR 1000 1500 CIE Color Coordinates White WX Typ 0 272 Typ SHARP 52 wy 003 0 277 40 03 RED Xr 0 640 v 0 330 Green Xg 0 280 Yg 0 600 Blue Xb 0 150 Yo 0 060 Standard Test Condition The unit has been ON Stable for approximately 30 minutes a dark environment at 2532 _ Ta 25 C Vec 12 0V VINV 24 0V VBRT 3 3V Timing 60Hz typ value Measurement condition Set the value of VBRT to maximum luminance of white 1 2 3 The values specified are at approximate distance 40Cm from the LCD surface 4 5 Copyright 2007 LG Electronics Inc All right reserved 9 Only for training and service purposes LGE Internal Use Only 7 SET Optical Feature Measurement Condition Full white Dynamic gt Measure the black luminance after 30 seconds Luminance min C R min No Item module Remark AV COMPONENT HDMI AV COMPONENT HDMI 1 37 inch LPL 400cd m 1000 LG5000 3 42 inch AU
26. 0 50 58 26 45 00 C4 8E 21 00 00 1E 00 00 00 00 30 60 58 1 64 11 00 OA 20 20 20 20 20 20 00 00 00 FC 70 00 4 47 20 54 56 OA 20 20 20 20 20 20 20 01 8A 011121314 5 6171819 A BICTD ETF 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0 102103 181 F1 47 84 05103 02 20 22 10 23 15 07 50 50 00 00 00 00100 00 00 00 00 00 00 00 00 00 00 00 10 67 03 0C 00 20 00 8 20 01 10100 72 51 DO 1E 20 60 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 20 6E 28 55 00 4 8E 21 00 00 1E 01 1D 80 18 71 1C 70 00 00 00 00 00 00 00 00 00 00 00 00 00 30 16 20 58 2C 25 00 C4 8E 21 00 00 9 8C 0A DO 8A 40 20 0 20 10 10 96 00 8 21 00 100 18 8 0 50 DO 8A 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18 60 26 36 80 AO 70 38 1F 40 30 20 25 00 4 8 21 00 70 00 1A 00 00 00 00 00 00 00 00 00 00 00 00 00 17 Copyright 2007 LG Electronics Inc All right reserved LGE Internal Use Only Only for training and service purposes 5 Adjusting the White Balance 5
27. 1 Overview Purpose and principle for adjusting the white balance Purpose Adjust the white balance to reduce the deviation of the module Principle The full dynamic range of the module when the RGB gain on the OSD is 192 In order to adjust the white balance with no saturation of the full dynamic range and the data fix one of the RGB gains to 192 and decrease the remaining two gains to adjust 5 2 Device to use 1 Color Analyzer CA 210 NCG CH 9 WCG 12 2 Computer to adjust needed for the automatic adjustment possible to communicate with the RS 232C 3 Adjustment remote controller 4 Video Signal Generator MSPG 925F 720p 216Gray Model 217 Pattern 78 gt Applied only when the inner pattern cannot be used Use the Color Analyzer with the matrix calibrated by the CS 1000 5 3 Measuring instrument wiring diagram Color Analyzer vi RS Computer RS 232C Pattern Generator Signal Notused when the inner pattern of the TV set is used 5 4 RS 232C Command used for the automatic adjustment RS 232C COMMAND Meaning CMD ID DATA wb 00 00 White Balance adjustment start wb 00 10 Start of adjust gain Inner white pattern wb 00 1f End of gain adjust wb 00 20 Start of offset adjust Inner white pattern wb 00 2f End of offset adjust wb 00 ff End of White Balance adjust Inner pattern disappeared wb
28. 5V 5C TU500 OPTION RF AGC USE ONLY FOR SECAM MES B jocis nidi L610 n TOFV G135D1 f bun i HER i T Jes lus Tos Lyt 1 16v cil csse ence ka FE Tour SME 0 iu BBLCTAI I w ep lt sera m neto LEMC3ZeST 6ROM I I mak 2 Ws Toss Posie ions ione ScinTi DET vu ualle ics es dem I e IS d M I v I L ce F501 0 I 1 0 45V GENERAL m m wI mea R518 47 A599 0 45V TU ftt we Sgen 2 E scama per 47 A557 m2 OPL SDA A TU 5V 81 10 ES spa A Tu FACE me LEMC3225T 6ROM Y sci B reas be 12 SCL A TU 0608 10 gr Ny sv S T WI m LU L PR SER s E 2 SC1 L IN 7 0 P504 Sce ID AM AUDIO 5 50 470 TA ji oer Test m am CA torre I tmt ScL p u Em my c2 L 1N L ar 9H mg or hes s neas 21 DELS SOFT jc cv gt pss 25 16 0 112 1 5VTU 1 anoe E 7 usta 9501 B Mens IE a3 w out R504 33 TU TS DATA 7 C629 ee 505 33 TU_TS OATAIE TULRESET_N Fm 5 625 da
29. ARK OF THE SCHEMETIC 45V GENERAL Ase3ec 3V VODP ST 4 5V_GENERAL 5V_CI_Vs Analog RGB SwitchING COMPONENT ms 727 ote L SERE 10087872 050LF BA IGN PCAN pa PCM DL3I taper ES z P z scio 1 16 lt t ge Em BUF TS CLK BUF TS DATA O BUF TS SYNC TU ERROR li BL TS VAL TU TS DATAL 1 7 ot 5 I mel E d LE gh 1 8 Fin 8 cow w v m Ww E POL A O 14 8 nm xm imgs inicia anc Qucm al Teens T ge m E ME routs p bas 4 q uy oS peer 5 2 go l x vice Y iie Ine semi i gs 2 Ei oime lt 2721 E E peel t JE vs m TTE APART 4 We x puma aye S gu 2 Dsue R 4 s is 2 n l as pd B I 5t 7 07 45V GENERAL Anas 7 Lucae os BRE gp mi onm ui Zeon E x 7 Ie a22 tnolcowract 1 T i wd TU TS DATAUT 7 a 1 1 1 T C748 e20pF 50V 6 z Tes 5 reds as 2010 14 E SPRING Sn z 2 ARB32 0171 180121 1 5 0131 ri Side AV Inge ewe um i wein K Sor 15 oT coseta E 0717 Sara 2 ISW sma AST Fem iUm I I LO SS a riim CELLA
30. ATD 2 STRER EA mots sv sT Hav 5v jV GENERAL 2155 m cux piensa sup Sore rx o 8 MEW3215 501TF 99 sov sov 1 60 SV PANEL Sapa TRE Co wur Sov _ 16 HS C1194 45V GENERAL 9 ur d5v ST IC1100 50V MP2305DS t uy cun sus de Lense 1 2 ue Ww RS u i m ST tawoon i l e ese T SF enr loss 1 POWER ON OFF 4 4 Sof SW COMP C1164 1100_ ES 3 6 shew 0 tu 0 tuF cia the Oise 1 PN POWER ES i Sox mac F 4 5 E 1 4 uml 7 ax 1107 fore C1142 E jme rey cue Tod d T wI T Aer PANEL CTL 1430 1630 1560 26 32 37 42 47 Sv C4137 00300650 32 37 42 47 52 THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FILRE AND ELECTRICAL SHOCK HAZARDS ESSENTIAL THAT ONLY MANUFATURES SPECFIED THE CRITICAL COMPONENTS IN THE N SYMBOL wen FROM X RADIATION WHEN SERVICING IF IS ARTS BE USED FOR ARK OF THE SCHEMETIC
31. An other abnormality exists that must be corrected before the receiver is returned to the customer 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 SD Good Earth Ground Q such as WATER PIPE To Instrument s 0 15uF CONDUIT etc exposed METALLIC PARTS AW 1 5 Kohm 10W 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
32. C1001 switch you should decide to replace Can you see the normal waveform RGB Audio switch or not Check the output of Main IC IC100 After checking the Power of Main Especially you should check IC IC100 you should decide to replace The H V sync and clock Main IC or not Can you see the normal waveform This board has big problem because Main IC IC100 have some troubles After checking thoroughly all path once again You should decide to replace Main Board or not Copyright O 2007 LG Electronics Inc All right reserved 26 LGE Internal Use Only Only for training and service purposes HDMI doesn t display Check input connect J900 J901 J902 J900 J901 J902 Can you see the normal may have problem Replace this Jack waveform Check DDC communication NO After checking the Power of this chip lines IC900 IC901 IC903 Pin5 6 you should decide to replace this or not NO Check HDCP communication After checking the Power of this chip lines IC902 you should decide to replace this or not After checking the trace of TMDS lines and This signal is TMDS power of HDMI Switch you should decide to replace HDMI Switch or not Can you see the normal waveform Check the output of HDMI After checking the Power of HDMI Switch IC902 Switch you should decide to replace Can you see the normal waveform MST3361 or not Check the output of Main IC IC100 After checking the Power of Main E
33. Device Setting Communication Getting Speed 74 4 C 50 PotType fuse gt C SbA cut C SO out oct jenio Boe gt use ser 2 pin t switch UART I20 GJ gt J pre Pull off Pon High z Elapsed Time fac USB Flash Status 00 Controllare la frequenza Usare una frequenza da 200KHz a 400KHz Copyright O 2007 LG Electronics Inc All right reserved Only for training and service purposes 23 2 4 Click Read tab and then load download file XXXX bin by clicking Read filexxx bin Checksum How filos File Unused Bytes Stan addr 003705 7 OFF End Barch File Elapsad Tima inc USB xu 5 Click Auto tab and set as below 6 Click Run 7 After downloading check OK message iia con CODESourceCodA Source Code Proe Dvo 3 nana r tor F Multi Flashes All Chp C File Area USB 3x Hz LGE Internal Use Only hha Ks aC http bbs 520101 com o USB DOWNLOAD 3 1 ADC Process 1 Put the USB Stick to the USB socket 3 1 1 PC input ADC 2 Automatically detecting update file in USB Stick 3 1 1 1 Auto RGB Gain Offset Adjustment If your downloaded program version in USB Stick is Convert to PC in Input source Low it didn t work But your downloaded version is High Signal equipment displays USB data is automatically detecting Output Voltage 700 mVp p 3 Show the messa
34. E Ta zaie p Ern HATA Er 3v avoo_aDc Er gs ST_BY 3 3V os 73 AvOD 33 2 5257 Eren iur TEO dur Er MDATA 10 Avo 33 3 IA Erro 33 4 p MDATA 121 in SR ES E AVDD 33 6 7 cesa 3 3V AVDD OTG adl i AVDD_MPLL 0 iur 3 3v AV00 LPLL yoa EG casi A 3 3v AVDD AU AND paral i wi uaa mds B s ANEI DDR MEMORY AVDD AU 50 43 3V AVDO STF Fred AE AV00 SIF Erin DATATE AVDD DDR C286 AVDD DOR 2 TO Tre te 42 5008 Ere MD TA avo p A Er za MDATA 251 T 27 280 DATA 27 0 25V AVOD OVI za Acne STs ST ey se Eri RAE vooc 1 P BBI vooc 2 EX Rese ME vooc 3 poa AME uo VES cos NM d 840 m ones 50 FEED MADRI 141 voc espe 2 soraa 02 ho ae MADR IB Mess Em WEE Ea veo Pw reer ANNE AVDD RTC grae ME MADR 4 J Za Erja Fa 56 MADRLO 0 pond 7 LvB op 100 o ER LGE7363C LF SAT EVE EX Cece d s Lva_aM or Temm Leso_sunes2 7 se LVB 4P 5 0 LP 37 LVDS meo uva 4 Lt vA 0P E Vac in ms e nw mas rs m 8 CAM mus mpm LVA CkM n wd ex vi B296
35. E USED FOR ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC ge ga BS 88949 45y sT 3 e EEPROM WP ENKMC2838 T112 ait 0 y x PU 8 a3 z jc al ME mo 2x 8 mies 100 sel e DOC SDA 1 T Taiki 48 DOC SCL 1 d prom I PRW cec sEMOTE 2 gt ces DOC SDA 3 us T x DDC SCL 3 1 1 02 HOMEt seme X 4 ERAN D o TA R96 104 1 ki s z 2 DO HOMI1 1c902 90 5 aan n ENKMC2B38 T112 gt 2 7 mid Een m 50 0013 1 xx a 300 0411 DOT HOMI4 s ao 5 T D1 HOMI1 10 39 CK4 HOMIi 5803 ti sss agen BET x 000 8044 I
36. LG LCD TV CHASSIS LD84D MODEL 42LG5010 42LG5010 ZD 42LG5020 42LG5020 ZB 42LG5030 42LG5030 ZE CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CONTENTS CONTENTS ate TTE 2 PRODUCT SAFETY uy uuu nnZidqded nina eaaa a aaaea aaa 3 SPEGIFICATION u nn aadoinnbriunce Doni ERG 6 ADJUSTMENT INSTRUCTION 13 TROUBLE SHOOTING LULU nna 22 BLOCK av cxt cio inno ences cain lae 28 EXPLODED VIEW uu usu uslunusisananaqahaqhusshusssakuaqika akuassssasaskassisasuqc 29 SVO SHEET Copyright 2007 LG Electronics Inc All right reserved 285 LGE Internal Use Only Only for training and service purposes SAFETY PRECAUTIONS Schematic Diagram and Replacement Parts List Shock Fire or other Hazards IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by A in the Do not modify the original design without permission of manufacturer It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent General Guidance An isolation Transformer should always be used during the servicing of a receiver whose chassis is not i
37. M i I t KEY2 bii 2 37 A Lar 583 26 25 85 23 EE 20402 4 eZ 742 2550 52 5 Sd Laces Lva 19 24 23 51552 ag 1630 25 37 EST 552 1541 NC 3 3v Sw zl Lve_4P 22 21 TP LVDS SEL GPID SV ST Soir tve 17 RKEO see n 5V_ST tie Si meot z HA ee m ligi r Ie paoa en S WIR 0055 2 pa IR Lva ANEN Lva oec 2045 L 2 ool 8 L630 LPL4e abu 88 NC RESET 2 1650 57 sg RESET NE dE 8 ROBE o n zener Diode is 155 men 7 L650 32 37 kuo42 LPL47 I close to wafer i sn GND tver 9 mec L630 a 37 742 Sus ES Lee LVB 1ML 3 8 4 Lve op gt 7 KES co LED_R PWM Lvg8 o0MD 6 mes 5 IR GND 4 NC SMW200 40C wolsv P407 oa LG50 37 42 47 52 2 vote E 1 voolsv Lan 86201280807 G30_19 22 726 Pao LG30 19 22 apt 00 JLVB 3M 1630 18 26 TIS LvB ckPL JLVB CKM L405 TO 2 Lve 1 dam e em m LVB 0M MEW32i6 SO1TF F3 1630 26 32 37 42 LoSo sa ing 4 t BFS E 1 m s 20400 5 68 Sr 2 gt
38. O 400cd m 1000 C R is excepted for PC mode 3 47 inch CMO 400cd m 1000 4 52 inch SHARP 360cd m 1000 8 Component Video Input Y Ps Pn No Specification Remark Resolution H freq kHz V freq Hz 1 720x480 15 73 60 00 SDTV DVD 480i 2 720x480 15 63 59 94 SDTV DVD 480i 3 720x480 31 47 59 94 SDTV 480p 4 720x480 31 50 60 00 SDTV 480p 5 720x576 15 625 50 00 SDTV DVD 625 Line 6 720x576 31 25 50 00 HDTV 576p 7 1280x720 45 00 60 00 HDTV 720p 8 1280x720 44 96 59 94 HDTV 720p 9 1280x720 37 50 50 HDTV 720p 50Hz 10 1920x1080 31 25 50 00 HDTV 1080i 11 1920x1080 33 75 60 00 HDTV 1080i 12 1920x1080 33 72 59 94 HDTV 1080i 13 1920x1080 56 25 50 00 HDTV 1080P 14 1920x1080 67 433 59 94 HDTV 1080P 15 1920x1080 67 50 60 HDTV 1080P 9 RGB PC No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remarks 720 400 31 468 70 08 28 321 2 640 480 31 469 59 94 25 17 VESA Input 848x480 60Hz 852x480 60Hz 37 684 75 00 31 50 gt 640x480 60Hz Display 3 800 600 37 879 60 31 40 00 VESA 46 875 75 00 49 50 4 832 624 49 725 74 55 57 283 Macintosh 1024 768 48 363 60 00 65 00 VESA XGA 56 470 70 00 75 00 60 123 75 029 78 75 6 1280 768 47 78 59 87 79 5 WXGA 7 1360 768 47 72 59 8 84 75 WXGA 8 1366 768 47 56 59 6 84 75 WXGA 9 1280 1024 63 595 60 0 108 875 SXGA FHD Model only 10 1920 1080 66 647 59 988 138 625 WUXGA FHD Model only Copyright O 2007 LG Electronics Inc All right reserved 10 LGE Internal Use Only Only
39. SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE A SYMBOL MARK OF THE SCHEMETIC E LG30 19 22 amp Stand by 3 _ 1 25V_MST_Core gem D D 3 Ware R STRAIGHT FR OM ke 7 s O W H D 43 3V_VODP 3 SV AVDD SIF T p apesr 43 3v vooP st cmassauk 121E m a s 101105 10 1uF ye m azs0865 3 STV ES 5v sT ad m I m pua quoe 530 19 22 piG30 19 227 R1104 0 PWM DIM 7 25109 at t 01100 2603052 Filta LG30 19 22 26 32 37 42 US ey genera r 1 1104 oor L sso ag ie t n euo m gum gu E ay r Lut 201209 0420 ead 1104L630 19 22 26 32 37 42 LG50 LPL3 PL37 LPL47 tee is Ae ar nar LS E RE A PIT AR AT L650 LPL32 LPL37 LPL47 WI P1101 5 GENERAL 16 DOCON INPUT 25V AVDO DVI 3V_VDDP_ST 03466 2 a asv sT Dur TE Ed SY avian um m sim St ni 0 S Pte OPTION TUNER CI 3V 1 BV WT TED POWER P1101 LG30
40. T 16 206 e D C use PM 101940 100 43 3v vopp_sr 2 9 e se TT scars oer RER wo SP01F_0UT Tan OE BE x Ss ut p217 m paeo Ww NS oL aede scanr ner S zs in to ad iom ur ean rou 100 Fr s ges pi MODULE SEL lt A avs gg 00 sip 985 a q Reis x tk THE IN SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES Tom SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC 1 mil 0 0254 mm z t 22 I ds als als ds als ds REG les ADDRESS TOTAL LENGTH lt 3000 mil 78 2mm E Js ds Js 5 al5ol5al5s o 7 ars EU au T 4 Soe t 4 ge I Ji zi JG aye TER DDR1 amp DDR2 different length range 4 25 mil max 50 mil zy I Ji T 2415459 SRI 2 5V DDR 2 5V DDR 2 5V_DDR 2 5V_DDR A IC300 IC3O41 5 56 630 4 5 16 02 4 4300 TT agii E 1 View 0015 T pa 0015 15 MDATA 31 MDATA 14 E ESI LM MDATA 30 ants MDATA 13 0014 E MDATA 291 Dat 0014 22 MDATAL 42 JMDATA 0 MDATA 281 16 pes HE MDATA
41. T Set to 0 5mArms LGE Internal Use Only 111 DAN 10 ISP Download option 10 1 Overview The Micom upgrade via the external port for the service for the customer 10 2 Device to use 1 PC 2 B D for the interface IIC amp ISP 3 Jig for downloading for the power supply 10 3 Adjustment wiring diagram Download device configuration diagram Main B D Interface B D 10 4 Adjustment condition Download condition IC name amp Circuit number MYSON MTV416GMF amp IC4015 Power supply 5V P4004 Pin 3 SCL D sub Pin 10 SDA D sub Pin 7 10 5 How to adjust for downloading 1 fter executing LGE Monitor Tools v1 1 click the first icon See the figure 2 When the screen is displayed as shown at the below figure set the items as follows MCU Select MTV512M64 R W Option Auto Write Verify Jig Option Myson Transmit Speed Medium Check blank PORT Select the Parallel Port to use LPT1 in general caution Select the EPP as LPT from the ROM BIAS setting Copyright 2007 LG Electronics Inc All right reserved 20 Only for training and service purposes WinISP 3 0 MCU Select C MTV3l2Mbs C MTVOI2M128 9 MTV512M54 Option Option C Auto Myson Fastest Auto C LG ae Read Init MICOM Jig Option Transmit Speed User Setting D MHz Check PORT LPT 1 Save Seting C CRC Mode Verilv Mode
42. VI mag ge MD TT m nommer m AA s10 cvns Tama E ETC pesi i sap pure w fex iex a wide amp 1 1 E 0 Mm amem areva CO UU b ur ge R gus 155 PSS Le TU ERROR L SUF TS VAL Wi IS X PC AUDIO F eu 2 EESTI TU ERROR VAL E 1FOIO SPRING 4 Tunes CMS im mes t BUF TS ro leonract 3 35 SIDE ALIN ir E f ew lla 1m im ge o 222 1ceoo mem 30 ue IE 29 74LVC541A PW 43 VCI oer ls i S E USB ust l gs Ea mn s OY wI wl gge 22 E cer n repr re ole puo Sr yar T 2 RI d ia P Ts T I SIDE C IN ceos __ 7 si Tu rs pararol Y IS TERTRE ono 3 P cus 8 K I ff s I qu m Id E use o i oe sucer Lo uc 2 E sar wl 2 is L l THE A SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X BADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS B
43. ace this Jack Check the input of Component After checking the Power of component Audio switch IC1001 Audio switch you should decide to Can you see the normal waveform replace component Audio switch or not Check the output of Component After checking the Power of component Audio switch IC1001 Audio switch you should decide to Can you see the normal waveform replace component Audio switch or not Check the output of Main IC IC100 Especially you should check The H V sync and clock Can you see the normal waveform After checking the Power of Main IC IC100 you should decide to replace Main IC or not This board has big problem because Main IC IC100 have some troubles After checking thoroughly all path once again You should decide to replace Main Board or not Copyright 2007 LG Electronics Inc All right reserved 25 LGE Internal Use Only Only for training and service purposes RGB PC doesn t disply Check J703 J703 Can MONT ermal may have problem Replace this Jack Check the input of RGB Video After checking the Power of RGB Video switch IC700 switch you should decide to replace Can you see the normal waveform RGB Video switch or not Check the input of RGB Audio switch IC1001 Can you see the normal waveform After checking the Power of RGB Audio switch you should decide to replace RGB Audio switch or not Check the output of RGB Audio After checking the Power of RGB Audio switch I
44. ach connection Power Output Transistor Device Removal Replacement 1 Heat and remove all solder from around the transistor leads 2 Remove the heat sink mounting screw if so equipped 3 Carefully remove the transistor from the heat sink of the circuit board 4 Insert new transistor in the circuit board 5 Solder each transistor lead and clip off excess lead 6 Replace heat sink Diode Removal Replacement 1 Remove defective diode by clipping its leads as close as possible to diode body 2 Bend the two remaining leads perpendicular y to the circuit board 3 Observing diode polarity wrap each lead of the new diode around the corresponding lead on the circuit board 4 Securely crimp each connection and solder it 5 Inspect on the circuit board copper side the solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch at stake top 3 Solder the connections CAUTION Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures Copyright 2007 LG Electronics Inc All right reserved gb Only for training and service purposes Circuit Board Foil Repair Excessive hea
45. d service purposes LGE Internal Use Only 4 5 EDID DATA HDMI3 EDID DDC Display Data Channel Data Note Because downloading can be down at the power on 0 1 2 3 4 5 6 7 8 1 9IAIBICIDIETE mode only if it is not set press the Power ON key of 0 FF FF FF 00 1E 6001 00 01 o1 01 ihe remotecontroller to proceed 10 00 11 01 03 80 73 41 96 CF 74 A3 57 4C 0 23 20 09 48 aC AF CF 00 31 40 45 40 61 40 81 80 Ag 40 o HDMI1 EDID DDC Display Data Channel Data 01 01 01 01 01 0166 21 50 BO 51 00 18 30 40 70 40 36 00 C4 8E 21 00 00 1 02 3 80 18171 38 2D 40 50 58 26 45 00 4 21 00 00 1 00 00 00 FD 00 30 60 58 1 64 11100 0A 20 20120 20 20 20 00 00 00 FC 70 00 4 47 20 54 56 0 20120 20 20 20 20 20 01 8A 0 1 2 3 4 5 6 7 8 9 B C D 0 00 00 1 60 01 00 01 01 01 01 10 00 11 01 03 80 73 41 96 0 CF 74 57 4C BO 23 20 09 48 4 00 31 40 45 40 61 40 81 80 A9 40 30 01 01 01 01 01 01 66 21 50 BO 51 00 1B 30 40 70 40 36 00 C4 8 21 00 00 1E 02 80 18 71 38 2D 40 50 58 26 45 00 4 8E 21 00 00 1E 00 00 00 FD 00 30 60 58 1 64 11 00 0A 20 20 20 20 20 20
46. ding is ended remove the USB Memory Stick from the USB jack 6 Press the IN START button of the remote controller to check the upgraded S W version Copyright 2007 LG Electronics Inc All right reserved 21 5 LGE Internal Use Only Only for training and service purposes TROUBLESHOOTING TV CATV doesn t display Check TU500 Pin15 Video output Could you measure voltage of NO Pin16 Sound output 0800 amp IIC lines Yo shou d check power line amp IIC lines Can you see the normal signal Are they all normal YES YES You should replace TUNER Check the output of TR Q503 NO You should decide to replace TR Q503 Can you see the normal waveform or not Check the output of Main IC IC100 Especially you should check The H V sync and clock Can you see the normal waveform NO After checking the Power of Main IC IC100 you should decide to replace Main IC or not This board has big problem because Main IC IC100 have some troubles After checking thoroughly all path once again You should decide to replace Main Board or not Copyright O 2007 LG Electronics Inc All right reserved R2 LGE Internal Use Only Only for training and service purposes DTV doesn t display Check the output data of TU800 Could you measure voltage of NO Pin 24 34 TU800 amp IIC lines Can you see the normal signal Are they all normal YES You should replace TUNER You should check power line a
47. e at the center of the LCD module surface when adjusting 5 Press the ADJ of the R C to select 7 White Balance of the Ez Adjust and press the right arrow key G to enter into the adjustment mode As soon as you press G the screen is entered into the full white inner pattern 6 Fix one of the R G B gains to 192 and decrease the remaining two gains to adjust not to exceed 192 7 The adjustment is done at three white balances of Cool Medium and Warm The inner pattern is basically used and if it is not possible the adjustment can be done by selecting the HDMI input NONE INNER or HDMI can be selected by the bottom option at the Ez Adjust Menu 7 White Balance menu and it is set to INNER as default If the adjustment cannot be done by the inner pattern select the HDMI to adjust Adjustment environment and reference 1 Environment illuminance Adjust it to 10 LUX or less at the place where the light Source such as lamp should be blocked at maximum 2 Probe location PDP Locate the Color Analyzer CA 100 CA 100 CA210 close to the module surface to measure and adjust LCD Maintain the Color Analyzer CA 210 close to the module surface by 10cm or less and keep the probe of the Color Analyzer perpendicular to the module surface 80 100 3 Aging time Keep the power on after the aging start with no power off to perform the heat run for 15 minutes or longer Keep the white pattern with the inner pattern
48. es 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 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
49. for the PDP For the LCD make sure that the back light is turned on by using no signal and the full white pattern or others LGE Internal Use Only 6 3 Reference White Balance adjustment coordinate and White balance O Brightness Full white 216 Gray Standard color coordinate and white balance when using the CS 1000 Color Coordination Color temperature Temp AUV x y COOL 0 276 0 283 11000K 0 0000 MEDIUM 0 285 0 293 9300K 0 0000 WARM 0 313 0 324 6500K 0 0000 Standard color coordinate and white balance when using the CA 210 CH 10 Color Coordination Color temperature Test Equipment x y COOL CA 210 0 276 0 002 0 283 0 002 MEDIUM CA 210 0 285 0 002 0 293 0 002 WARM CA 210 0 313 0 002 0 329 0 002 7 Select the option by country 7 1 Overview The option selection is applied to the North American model only which selects the rating related country Applied models LA84A Chassis applied None USA Model Canada Mexico 7 2 How to select 1 Press the In Start key of the R C and press the red oval OP1 PIP CH key to enter into the Factory Option menu 2 Select 1 USA 2 CANADA or 3 MEXICO from the country select according to the destination At this time use the volume key to adjust Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 19 8 Set the shipping mode In stop Afte
50. ge Copying files from memory Impress Resolution XGA 1024 x 768 60Hz Model 60 in Pattern Generator Pattern 65 in Pattern Generator MSPG 925 SERISE 4 Updating is staring Adjustment pattern PC Adjust by commanding AUTO COLOR ADJUST 3 1 1 2 Confirmation We confirm whether OxAA RGB address of EEPROM OxA2 is OxAA or not If OxAA RGB address of EEPROM OxA2 isn t OxAA we adjust once more We can confirm the ADC values from 0xA4 0XA9 RGB addresses a page 2 Manual ADC process using Service Remocon After enter Service Mode by pushing ADJ key execute ADC Adjust by pushing gt key at ADC CALIBRATION RGB PC 3 2 1 COMPONENT input ADC 3 2 1 1 Component Gain Offset Adjustment Convert to Component in Input source Signal equipment displays Impress Resolution 480i 1 ADC ADJUST EZ ADJUST 5 Updating Completed The TV will restart automatically R GAN 6 If your TV is turned on check your updated version and t SB a ADAST de Tool option explain the Tool option next stage 4 WHTE PATTERN 20 Rss OFFSET If downloading version is more high than your TV have TV lost all channel data In this case you have to channel recover if all channel data is cleared you didn t have a DTV ATV test on production line O After downloading have to adjust TOOL OPTION again 1 Push IN START key in service remote controller 2 Select Tool
51. is Full scart and support RF OUT analog Scart 2 jack is Half scart and support MNT DTV OUT 4 Video Input RCA 1EA PAL SECAM NTSC 4 System PAL SECAM NTSC PAL60 5 S Video Input 1EA PAL SECAM NTSC 4 System PAL SECAM NTSC PAL60 6 Component Input 1EA Y Cb Cr Y Pb Pr RGB Input RGB PC Analog D SUB 15PIN HDMI Input 3EA HDMI1 DTV DVI PC HDMI version 1 3 HDMI2 DTV Support HDCP HDMI3 DTV 9 Audio Input 3EA RGB DVI Audio L R Input Component AV 10 SDPIF out 1EA SPDIF out 11 Earphone out 1EA Antenna AV1 AV2 AV3 Component RGB HDMI1 HDMI2 HDMI3 12 USB 1EA For service only Copyright 2007 LG Electronics Inc All right reserved eos Only for training and service purposes LGE Internal Use Only 6 Chroma amp Brightness 6 1 37 LCD Module No Item Specification Min Typ Max Remark Viewing Angle lt CR gt 10 gt Right Left Up Down 89 2 Luminance Luminance cd m2 400 500 Variation 1 3 MIN Contrast Ratio CR 1000 1400 CIE Color Coordinates White WX Typ 0 279 Typ LPL 37 wy 0 03 0 292 0 03 RED Xr 0 641 v 0 334 Green Xg 0 291 Yo 0 614 Blue Xb 0 145 Yo 0 062 1 Standard Test Condition The unit has been ON 2 Stable for approximately 30 minutes in a dark environment at 25 2_ 3 The values specified are at approximate distance 50Cm fr
52. mp IIC lines Check the output of Main IC IC100 Especially you should check The H V sync and clock Can you see the normal waveform After checking the Power of Main IC IC100 you should decide to replace Main IC or not This board has big problem because Main IC IC100 have some troubles After checking thoroughly all path once again You should decide to replace Main Board or not Copyright O 2007 LG Electronics Inc All right reserved 29s LGE Internal Use Only Only for training and service purposes AV1 2 3 doesn t display Check J600 J600 JK607 JK618 J600 J601 or SIDE AV may have Can you see the normal problem Replace this Jack or SIDE waveform AV Check the input of Video After checking the Power of AV switch switch IC700 you should decide to replace AV switch Can you see the normal waveform or not Check the output of Main IC IC100 Especially you should check The H V sync and clock Can you see the normal waveform After checking the Power of Main IC IC100 you should decide to replace Main IC or not This board has big problem because Main IC IC100 have some troubles After checking thoroughly all path once again You should decide to replace Main Board or not Copyright O 2007 LG Electronics Inc All right reserved 24 LGE Internal Use Only Only for training and service purposes Component doesn t display Check J701 J701 Can you see the normal hi k waveform may have problem Repl
53. nternal 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 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 e
54. om the LCD surface 4 25 2 VLCD 12 0V fV 60Hz Dclk 148 5MHz VBR 1 6 ExtVBR_B 100 6 2 42 LCD Module No Item Specification Min Typ Max Remark Viewing Angle lt CR gt 10 gt Right Left Up Down 89 2 Luminance Luminance cd m2 400 500 Variation 1 3 MAX MIN 3 Contrast Ratio CR 1000 1500 CIE Color Coordinates White WX Typ 0 280 Typ AUO 42 wy 0 03 0 290 0 03 RED Xr 0 640 v 0 330 Green Xg 0 290 Yy 0 600 Blue Xb 0 150 Yo 0 060 1 Standard Test Condition The unit has been ON 2 Stable for approximately 60 minutes a dark environment at 25_ 3 The values specified are at approximate distance 50Cm from the LCD surface Copyright O 2007 LG Electronics Inc All right reserved 8 LGE Internal Use Only Only for training and service purposes 6 3 47 LCD Module No Item Specification Min Typ Max Remark Viewing Angle lt CR gt 10 gt Right Left Up Down 80 88 2 Luminance Luminance cd m2 450 500 Variation 1 3 MAX MIN 3 Contrast Ratio CR 1800 2000 CIE Color Coordinates White WX Typ 0 280 Typ CMO 47 wy 0 03 0 285 0 03 RED Xr 0 638 Yr 0 331 Xg 0 272 Yy 0 590 Blue Xb 0 144 Yo 0 068 1 Stable for approximately 60 minutes in a dark environment at 25 2_ and windless
55. pecification Remark 1 Display Screen Device 37 42 47 52 wide Color Display Module LCD Aspect Ratio 16 9 3 LCD Module 37 TFT LCD FHD MAKER 37 LPL 42 TFT LCD FHD 42 AUO 47 TFT LCD FHD 47 CMO 52 TFT LCD FHD 52 SHARP 4 Operating Environment Temp 0 40 deg Humidity 0 85 LGE SPEC 5 Storage Environment Temp 20 60 deg Humidity 0 85 Input Voltage AC100 240V 50 60Hz Power Consumption Power on Green 37 lt 132W 7 86 125 W LG5000 42 lt 197W 13 2 184 W LCD Backlight 47 lt 242W 26 4 216 1 W 52 lt 335W 20 16 315 W 8 Type Size 37 877 H x 516 8 V x 55 5 D LG5000 42 983 0 H x 576 0 V x 52 7 D With inverter 47 1096 0 H x 640 0 V x 51 0 D 52 1219 0 H x 706 7 V x 64 6 D 9 Pixel Pitch 37 0 42675 H x 0 42675 V LG5000 42 0 4845 47 0 5415 H x 0 1805 V 52 0 600 H x 0 600 V 10 Back Light 37 TBD EEFL Straight type LG5000 42 18pcs Straight type 47 20CCEL Straight type 52 24CCFTs direct type 11 Display Colors 16 7M 16 777 216 12 Coating 3H AG Copyright 2007 LG Electronics Inc All right reserved 6 LGE Internal Use Only Only for training and service purposes 5 MODEL General Specification No Item Specification Remarks 1 Broadcasting system 1 PAL BG 2 PAL DK 3 PAL I T 4 SECAM L L 5 DVB T ID TV 2 Receiving system Analog Upper Heterodyne Digital COFDM 3 Scart Jack 2EA PAL SECAM Scart 1 Jack
56. 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 10 by volume Acetone and 90 by volume isopropyl alcohol 90 99 strength CAUTION This is a flammable mixture Unless specified otherwise in this service manual lubrication of contacts in not required 5 Do not 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
57. r completing the final test in order to set the set to the shipping condition press the In Stop key of the R C to make sure that the set is turned off 9 GND and resisting pressure test 9 1 How to test 1 Preparing for the automatic test on the GND amp resisting pressure Make sure that the power cord is completely inserted into the set When it is disconnected or loosened test after inserting it 2 Perform the automatic test on the GND amp resisting pressure The set with power cord the cord and the A V completely inserted into the tuner is loaded on the pallet and entered into the automatic test process Connect the D terminal AV JACK tester Turn on the automatic GWS103 4 Perform the GND TEST If it is not good the buzzer is operated to notify the test result to the operator If it is OK it is automatically switched to the resisting pressure test Disconnect the cord and the A V from the AV JACK BOX Perform the resisting pressure test If it is not good the buzzer is operated to notify the test result to the operator If it is OK the GOOD LAMP is turned and the stopper is moves down and it moves to the next process 9 2 Items to manage O TEST voltage GND 1 5KV min at 100mA SIGNAL 3KV min at 100mA O TEST time 1 second O TEST POINT GND TEST between POWER CORD GND and SIGNAL CABLE METAL GND Resisting pressure TEST between POWER CORD GND and LIVE amp NEUTRAL O LEAKAGE CURREN
58. solated from the AC power line Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks It will also protect the receiver and it s components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation If any fuse or Fusible Resistor in this TV receiver is blown replace it with the specified When replacing a high wattage resistor Oxide Metal Film Resistor over 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
59. specially you should check IC IC100 you should decide to replace The H V sync and clock Main IC or not Can you see the normal waveform YES This board has big problem because Main IC IC100 have some troubles After checking thoroughly all path once again You should decide to replace Main Board or not Copyright O 2007 LG Electronics Inc All right reserved LGE Internal Use Only Only for training and service purposes BLOCK DIAGRAM 46 0004 II O 843 OII ZAA S S Y ul u 5 000191 VOO0Ed LN SCAT 00801 91952 10121 ay Asoway use 20101 8r use 6021 Jepuedx3 O I SII NL v PCM CD ON 20801 NACEZSLOIM 008d 1015 1D TS_Parallel PCM ADD euinjes 60101 2160 2 Jet 2 19 5 a n ead phone Out TS Serial 19539 0101 INIM Side_Y C V L R 2001201 ZVOLLOWdL IWGH AS 20621 yms GdH XH O3O X O3O gt ASR wl ED 20 21 y ZEZEXVIN 00891 VIYESONWA 951 100101 990 NI dd Ad A b Ab V oza Al E NA vivd SL NL 318 SHAO AL H3ISOOG
60. t applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board causing the foil to separate from or lift off the board The following guidelines and procedures should be followed whenever this condition is encountered At IC Connections To repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern side of the circuit board Use this technique only on IC connections 1 Carefully remove the damaged copper pattern with a sharp knife Remove only as much copper as absolutely necessary 2 carefully scratch away the solder resist and acrylic coating if used from the end of the remaining copper pattern 3 Bend a small U in one end of a small gauge jumper wire and carefully crimp it around the IC pin Solder the IC connection 4 Route the jumper wire along the path of the out away copper pattern and let it overlap the previously scraped end of the good copper pattern Solder the overlapped area and clip off any excess jumper wire At Other Connections Use the following technique to repair the defective copper pattern at connections other than IC Pins This technique involves the installation of a jumper wire on the component side of the circuit board 1 Remove the defective copper pattern with a sharp knife Remove at least 1 4 inch of copper to ensure that a hazardous condition will not exist if the j
61. tip size and shape that will maintain tip temperature within the range or 5 to 600 TF 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 5000F 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 circuitboard printed foil 6 Use the following soldering technique a Allow the soldering iron tip to reach a normal temperature 5000F to 600 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 I
62. umper 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 NOTE Specifications and others are subject to change without notice for improvement 1 Application Range 3 Test method This spec sheet is applied to the 37 42 47 52 LCD TV used LA84A chassis 3 1 Performance LGE TV test method followed 3 2 Demanded other specification 2 Specification Safety CE IEC specification Each part is tested as below without special appointment EMC CE IEC 2 1 Temperature 25 5 C 77 9 F CST 40 5 C 2 2 Relative Humidity 65 10 2 3 Power Voltage Standard input voltage 100 240V 50 60Hz 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 General Specification No Item S
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