LCD TV SERVICE MANUAL
Contents
1. 1S SYNC TS vL Srv n our DOTV VNT QUT X C I O EXPANSION uoo nese er wao pao DTV UNT R QUT our lt Spey ato t4 saper 2 4 2 SUB ge cove oer Ha ce eODTSTRAP 1 0 51 ae pst EAS n SEE o Pw soria Me osue LM vv Fai 53 AUDIC NAST E p220 MODULE SIOE CVBS_DET THE N SYMBOL MARK OF THI CD INCORPORATES N SYMBOL SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X ATION FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS 2007 12 SHOCK HAZARDS WHEN SERVICING IF 15 ESSENTI ONLY MANUFATURES SPECFIED PARTS BE USED FOR URES SPECFIED PARTS BE USED FOR COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC TICAL COMPONENTS IN THE A SYMBOL MARK OF SCHEMETIC mil 0 0254 mm 2 5V 00R mil 0 5 mm A 40 mil 1 046 mm ames 2 ADDRESS TOTAL ENGTH 47 1981 amp DDR2 different 1 50 mill2. use 00 21 5 60191 Jepuedx3 NL v Sel 19539 90101 elSOve ONAS NH ansa 8 9 8 ansa SAAD 105 1 LNW ALG NI 625 SANI INGH 5529 idit 60291 asn 1001 21 2 NI Jd Qd A dWOO b nbvoainraoa 2 v SL NL dis SAAD AL 815004 INW LINY AS NI 1 Od e AL 128 g 9 H LOS see NI 128 NI 58 9 cO LNO A LNW ALC 22 LGE Internal Use Only 20 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes Copyright 2008 LG Electronics Inc All right reserved 21 LGE Internal Use Only Only for training and service purposes Copyright 2008 LG Electronics Inc All right reserved 22 LGE Internal Use Only Only for training and service purposes EEPROM av voop st 10105 i EB SANT lv Lee ATBACEA2W 109 3V EEPROM E 1 Sov EL m CO EEPROM 3V VODP ST Roars wd ST BY 3 3 lie Due
3. 1102 CBASSAR 121E avat 25V_AVDD DVI cns prias D lum Testo AUF TED i OBSS ADUTRVES GENERAL 5 2 5 ie lum E IUNER C 245 POWER P1101 LG DDCON INPUT mizSa L6 3v t1 LPL32 LPL37 LPL47 7 32 37 47 1113 LG50 LP 32 LPL37 LPL47 je3216 50 LG50 LPL32 LPL37 N2 Troup ZZ So tue Tis oot ERROR CUT nus Rao A1263 TPOWER_ON OFF SYMBOL MARK OF THIS SPECIAL FEATURES IMPORTANT FOR AND ELECTRICAL SHOCK ESSENTIAL THA THE CRITICAL COMPONENTS IN THE ONLY MANUF ATURES POR tussi c VOLTAGE 550 137 f sinas 15 PIN 22 21112 050 7 LG30 SHARES PIN 20 Mo42 L630 AUD42 R1120 LGS0 LPL37 ALOA2 SHARES2 0040477 Rita LOS R44 LG LG30 AUD42 ERROA QUT PIN STATUS 15 A S a lt cn 15 e outeur 1 1 1 LI 16 fa
4. e 1 Deo3 vorne s cue aH E lt P Hour HOME LACH 3V_vo0e_st 5 Se ac se I 5 5V POWER 20 45V GENERAL 3 3V_VDDP_ST 4 LEN 2 gt ext tana Em HOMI CEC gn EAR R QUT natas mo DM 5 A SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES i T PECIAL FEATURES FOR PROTECTION FROM X RADIATION AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN A SYMBOL MARK OF THE SCHEMETIC SYMBOL MARK OF THIS SCHE 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 AITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC av avon 33 3v Vope sT eel da 3v vooe sone 9 A00 SI po
5. ate 1056 SUSAN NN 9 TC300 LVA 3PE pron ala bis 504 swem ae 0 256163 2 4 p LVA CKP mon gt 115 5 wa canw NT 15 SES 14 vana 1 13 TEAM x MDATAL 18 MDATA MDATA mc a MDATA MDATA A un ow 5 fet 2 Lvos si BARG 4 7 45 3V CT MDATA Lo50 32 37 62 TEN MOTA Bis 367525774 LESS Qa 8 cs E m n a ILva 4M MBW3216 501TF Tiew DAT MDATA 2 E L p MDATA MDATA ien m 3 NN 2 5 1 DATA DATA MDATA 1 veo Lap voo 1 mei mert va gt Peel Z faa far fast Lva KEG Lv mes pest G d 2 EDT Gl S 4 Ee AS lt 5 ase MCL 5 6300 WRX LK l 7 01 2 7 CLKE AAR
6. isn t OxAA we adjust once more We can confirm the ADC values from 4 9 RGB addresses in a page OxA2 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 EZ ADJUST SUB B C ADJUST 2 3 W B ADJUST 4 WHITE PATTERN R OFFSET G OFFSET B OFFSET 2 COMPONENT input ADC 1 Component Gain Offset Adjustment Convert to Component in Input source Signal equipment displays Impress Resolution 480i MODEL 209 in Pattern Generator 480i Mode Pattern 65 Pattern Generator MSPG 925 series 11 Impress Resolution 1080 Model 223 in Pattern Generator 1080i Mode Pattern 65 in Pattern Generator MSPG 925 series lt Fig 2 gt Adjustment pattern COMPONENT Adjust by commanding AUTO_COLOR_ADJUST 2 Confirmation We confirm whether OxB3 4801 0 10801 address of EEPROM 2 is OxAA or not If OxB3 480i 0xBC 1080i address of EEPROM OxA2 isn t we adjust once more We can confirm the ADC values from OxAD OXB2 480i OXB6 BB 1080i addresses in a page OxA2 Manual ADC process using Service Remocon After enter Service Mode by pushing ADJ key execute ADC Adjust by pushing key at ADC CALIBRATION COMPONENT Impress Resolution 480i EZ ADJUST
7. 4 m sE 18 Po Manil 121 12808201F at o want 111 a I M al 1 E BAL po ana I _________ lt anor 5 01 MADR J x asc 290 5 __ pt 7 MADALC foo 71 5 rM fe MADRS 1 C MADAI 6 LvB 1M i it T 5 j MADRISI 2 MADA lt lt MAD 41 TAA ge m TA ne n c on c AN SYMBOL MAPK OF THIS SCHEMETIC DIAGR 1 SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF ENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR CRITICAL COMPONENTS IN THE SYMBOL MARK DF THE SCHEMETIC SYMBOL MARK OF THIS 5 DIAGR 5 SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM ADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR TRONILS COMPONENTS IN THE 5 YMBOL MARK OF SCHEMETIC Copyright 2008 LG Electronics Inc All right reserved LGE Internal Use Only Only for tr
8. meur fa 1 t1135 1000 167 3V MST Tet azsts70 3 DIATION SERVICING IF 18 SPECFIED PARTS BE USED FOR SYMBOL MARK OF SCHEMETIC PROTECTION ARDS WHEN Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LG Electronics Inc Jan 2008 P NO MFL41037103 Printed in Korea
9. This specification sheet is applied to all of the LCD TV with LD84A chassis 2 Designation 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 Power Adjustment Free Voltage 3 Magnetic Field Condition Nil 4 Input signal Unit Product Specification Standard 5 5 Click Auto tab and set as below 6 Click 7 After downloading check OK message MStar ISP Utility 4 1 8 4 46 3 Es m Device Load Read Auto B P V Restore HDCP 1 Read File Checksum Restore Data v Ie ExitISP File Area 6 i Run C EraseArea Fist 52 KBytes Partial Erase Reserve after operation Above 5 Minutes Heat Run Temperature at 25 5 C Relative humidity 65 10 USB DOWNLOAD Input voltage 220V 60Hz 6 Adjustment equipments Color Analyzer CA 210 or CA 110 Pattern Generator MSPG 925L or Equivalent DDC Adjustment Jig equipment SVC remote controller 7 Don t push The IN STOP KEY after completing the function inspection 3 Main PCB check process APC After Manual Insult executing APC Download 1 Execute ISP program Mstar ISP Utility and then click Config tab 2 Set as below and then click Auto Detect and check message If display
10. t work But your downloaded version is High USB data is automatically detecting 3 Show the message Copying files from memory 4 Updating is staring 5 Updating Completed The TV will restart automatically 6 If your TV is turned on check your updated version and Tool option explain the Tool option next stage f downloading version is more high than your TV have TV can lost all channel data In this case you have to channel recover if all channel data is cleared you didn t have a DTV ATV test on production line LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes After downloading have to adjust TOOL OPTION again 1 Push IN START key in service remote controller 2 Select Tool Option 1 and Punch in the number Each model has their number 32LG5000 ZA 8977 3 Completed selecting Tool option 3 1 ADC Process 1 PC input ADC 1 Auto RGB Gain Offset Adjustment Convert to PC in Input source Signal equipment displays Output Voltage 700 mVp p Impress Resolution XGA 1024 x 768 60 2 Model 60 Pattern Generator Pattern 65 Pattern Generator MSPG 925 Series lt Fig 1 gt Adjustment pattern PC Adjust by commanding AUTO_COLOR_ADJUST 2 Confirmation We confirm whether OxAA RGB address of EEPROM is or not If OxAA RGB address of EEPROM
11. 2 SUB B C ADJUST 8 W B ADJUST 4 WHITE PATTERN Impress Resolution 1080i 1 ADC ADJUST 3 2 Function Check 1 Check display and sound Check Input and Signal items cf work instructions 1 TV 2 AV SCART1 SCART2 S VHS CVBS 3 COMPONENT 480i 4 RGB PC 1024 x 768 60hz 5 HDMI 6 PC Audio In Display and Sound check is executed by Remote controller L LGE Internal Use Only 4 Total Assembly line process 4 1 Adjustment Preparation 1 W B Equipment condition CA210 CH 9 Test signal Inner pattern 85IRE 2 Above 5 minutes H run in the inner pattern power on key of adjust remote control 9 15 Pin D Sub Jack is connected to the AUTO W B EQUIPMENT 4 Adjust Process will start by execute 2 Command Inner pattern OxF3 OxFF 11 000 K X 0 276 0 002 Y 0 283 0 002 Medium 9 300 K X 0 285 0 002 Y 0 293 0 002 6 500 K X 0 313 0 002 Y 0 329 0 002 Color Cool lt Test Signal gt Temperature Inner patern 216gray 85IRE Warm 5 Adjust Process will finish by execute I2C Command Inner pattern Inner pattern OxF3 0x00 Caution Color Temperature COOL Medium Warm One of R Gain G Gain B Gain should be kept on OxCO and adjust other two lower than CO when R G B Gain are all CO it is the FULL Dynamic Range of Module Manual W B process using adjusts Remote control After enter Servic
12. Error Check connect computer jig and set 3 Click Connect tab If display Can t Check connect computer jig and set MStar ISP Utility V4 1 8 Bx gm 25 sw PS 086 Device Load Read Auto B P V Restore HDCP Erase Config Connect Dis Con Use USB E2PROM Device Setting I2C Pin Definition 9 Communication Setting Speed 74 al gt SDA in SCL in PortType use C SDA SCL out verre Vee PIN PINIO SPI Setting Reverse High USE SPI E Md a Lobelt 4 3 c y Pull all Pin High Please Check Speed To us speed between from 200 KHz to 400 KHz Roughly Speed 450 KHz Elapsed Time rec USB 450KH2 Flash Status 00 4 Click Read tab and then load download file XXXX bin by clicking Read MStar ISP Utility V4 1 8 JE Device Load Read Checksum ST SOO a TET File Status Start Addr 0000000 Hex files Unused Bytes 0x00 C OxFF Batch File End Addr 0x1FFFFF Elapsed Time 1058 450KHz Copyright 2008 LG Electronics Inc All right reserved 10 Only for training and service purposes 1 Put the USB Stick to the USB socket 2 Automatically detecting update file in USB Stick If your downloaded program version in USB Stick is Low it didn
13. No Is the inverter on Check the LCD Module gt Is output the normality Low High voltage except Stand by 5V No Replace the Power board Reconnect Panel link cable P401 or P406 or P407 Replace the Main board Before change Main Board Check S W version and White Balance value Change Main bord Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 15 S W download and set White Balance value LGE Internal Use Only 3 Unusual display from TV CATV mode Is video No UM vad output of the Tuner 5 the input normal CheckT U500 voltage normal Check 15 0500 4 Yes Check the Power ed EN ee ue o ec Roc Le ji fete it No Is the LVDS cable connected well Cable inserts well Ww 100 Is video output of the tuner No Is the input Yes normal Check TU500_ voltage normal Check pin24 pin34 Pin21 22 Same as Block Check the Power Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 16 2 communication Normal
14. Only RF or DTV TTR is no sound Check the Tuner in Out Caution Before change Main Board Check S W version and White Balance value Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes Change Main bord 19 G ne spaakor gt Seton speaker on menu on menu Yes No tha Speaker gt Check th Speaker cable cable normal Yes No 1G100 operate gt Replace 100 normally Yes No 1C1000 operate gt Replace IC1000 normally Yes Replace main board S W download and set White Balance value LGE Internal Use Only BLOCK DIAGRAM AS 208201 NACEZSLOIM 000191 VOOO0 d LN tao s c ddH XH 535 a a x 18 5 008d 8 gt 1015 19 5 s D 00891 VEPSOA TPZ 200101 2 0119 41 TS_Serial PCM_CD_ON TS_Parallel i ZAIN lt ul p SGA GH cE 6 amp 00801 411952 euanjeg LOLOI any USe J leuegq AOT 20101
15. V ERCRTRT PEATE N PENCATET surts TU_ERAOR BUF_TS CLK o r Do SYMBOL MARK OF THIS TURES IM ECTRICA 91 HAT ONLY M THE CRITICAL ULERROALN D peas 9 U ERROR L BUF TS VAL GRAM INCORPORATI N FROM X RAUIA BLOCK LGE Internal Use Only Pr E 1 E Huet 7 TEENE me n 9 E FIX POL 3 Mines Hovra JDe vri 1009 05184 Hows e901 0 100 HOME jus cK CX 100 100 CO RESET A i Ves ro 24038919001 j Fi 102000 2 1 Ea d i 20 203 01 AVEO DVbDeLL ig uy m NM
16. clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device General Soldering Guidelines 1 Use a grounded tip low wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range or 500 F to 600 F 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
17. 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 4 6 EDID DATA 1 ANALOG DATA 128Byte 2Bi Pais T4 s 8 ou cad 10 as 48 2 20 1 m 55 22 m c 40 35 C Itf 20 50 s2 7 ef 2 DIGITAL DATA HDMI 1 256Byte 0 a T4Ts Te Tz Eo Fo ps 10 jor 4 46 7 78 lea 57 49 25 20 11 48 5 40 45 40 61 40 81 30 n for o ha 80 40 20 55 oo 26 32 loo foo ha 21 50 51 foo 50 48 55 00 21 00 ic foo foo fFe 00 60 32 47 55 30 20 20 20 20 foo foo foo Fo foo 52 fic or joo joa oo feo 20 po po 2 3 4 8 8 8 Jc ole Ir m pe Ft 02 1 for os 2 13 os 14 es fa o 2 ho 3 07 les 01 00 00 65 03 20 oo io loo o Bc 52 he 20 28 55 40 30 fee 21 00 foo fie o fio loo
18. key by SVC remocon Red LED are blinked alternatively And then Automatically turn off Must not AC power OFF during blinking Copyright 2008 LG Electronics Inc All right reserved 13 LGE Internal Use Only Only for training and service purposes 1 Power 1 Symptom TROUBLESHOOTING 1 It is not discharged minutely from the module 2 Light does not come into the front LED 2 Check process Is inserted a plugged in power cord Yes Is the Line Filter and Power Board Cable connected Is the fuse of PSU normal Is it connected that PSU and P1100 in Main B D Yes Plug in the power cord Connect the Cable Replace the Fuse Connect the Cable P1100 marking is authorized on manual After all cables connect is removed to PSU the AC voltage When ST BY 5V 15V are not operated replace PSU Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes If there is normal status Replace main board 14 LGE Internal Use Only 2 No Raster 1 Symptom 1 No OSD abnd image occur at screen 2 It maintains the conditioon where the front LED is blue 2 Check process Does minute discharge at Module Yes Is the link cable normal Yes Is the IC801 s output normal Yes Change the IC IC 100 Caution
19. n 0 ceni pega T EI a Cil 8 75 avop_ors Th an7o0a AVDO VPI 3V AVDO LPLL 2005 me ica 5 a ERA er s veo usa z is LES AEn AvO LPLL t Sav 4 T VM CS 3 A SE n nn 5 AvaD LPLL 2 9 EA MEMORY LASH MEMORY DIN DV GPIO08 NM 50 3V_AVOD_SI XK mec 5 t V ena n 0998 m B 0 1UF 3v vpoP sT Y ESET N Wp I HP DET Sov ESAE 4 3 3v_vonr_sT IDATA SS Eae DATA 28 261 IDATA 3O ss t ycas MAAS Coe rx 4 5 Coe o 1 x Sett 2 sro tur F gt anal 15 a E Manal ti T Manal papale yoo PAA cra 4 lasn we i es 1 Ee 1OSUB HSYNE aV_vooP_st Ver DSB 1440 900 19 i iv Ene 36087 x 6 i sispan 2 2 10 LvDS 108IT peeo a221 a223 m 5 Sm CO Lv 01050 227 ES meim EBAN
20. 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 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 sh
21. 31 25 50 00 HDTV 1080 11 1920 1080 33 75 60 00 HDTV 1080 12 1920 1080 33 72 59 94 HDTV 1080 19 1920 1080 26 97 27 23 97 24 HDTV 1080p 14 1920 1080 33 716 33 75 29 976 30 00 HDTV 1080p 15 1920 1080 56 250 50 HDTV 1080p 16 1920 1080 67 43 67 5 59 94 60 HDTV 1080p 7 RGB PC INPUT Mode No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed 1 720 400 31 468 70 08 28 321 2 640 480 31 469 59 94 25 17 VESA Input 848 480 60Hz 852 480 60Hz 37 684 75 00 31 50 gt 640 480 60Hz Display 3 800 600 37 879 60 31 40 00 VESA 46 875 75 00 49 50 832 624 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 1440 900 55 5 59 90 88 750 WXGA 19LG3000 ZA only 10 1400 1050 64 744 59 948 101 00 WSXGA 22LG3000 ZA only 11 1680 1050 65 16 59 94 147 00 WSXGA 22LG3000 ZA only 12 1280 1024 63 595 60 0 108 875 SXGA FHD Model only 13 1920 1080 66 647 59 988 138 625 WUXGA FHD Model only Copyright 2008 LG Electronics Inc All right reserved 8 LGE Internal Use Only Only for training and service purposes 8 HDMI DTV No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed 1 720 480 15 734 15 6 59 94 60 27 00 SDTV 4801 2 720 480 31 469 31 5 59 9
22. 4 60 27 00 27 03 SDTV 480P 3 720 576 15 625 50 27 b4 SDTV 576l 4 720 576 31 25 50 54 SDTV 576P 5 1280 720 37 500 50 74 25 HDTV 720P 6 1280 720 44 96 45 59 94 60 74 17 74 25 HDTV 720P 7 1920 1080 33 72 33 75 59 94 60 74 17 74 25 HDTV 10801 8 1920 1080 28 125 50 00 74 25 HDTV 10801 9 1920 1080 26 97 27 23 97 24 74 17 74 25 HDTV 1080 10 1920 1080 33 716 33 75 29 976 90 00 74 25 HDTV 1080 11 1920 1080 56 250 50 148 5 HDTV 1080P 12 1920 1080 67 43 67 5 59 94 60 148 95 148 50 HDTV 1080 9 HDMI PC No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remark 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 50 832 624 49 725 74 55 57 283 Macintosh HDCP 5 1024 768 48 363 60 00 65 00 VESA XGA HDCP 56 470 70 00 75 00 60 123 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 1440 900 55 5 59 90 88 750 WXGA 19LG3000 ZA only 10 1400 1050 64 744 59 948 101 00 WSXGA 22LG3000 ZA only 11 1680 1050 65 16 59 94 147 00 WSXGA 22LG3000 ZA only 12 1280 1024 63 595 60 0 108 875 SXGA FHD Model only HDCP 13 1920 1080 66 647 59 988 138 625 WUXGA FHD Model only HDCP Copyright 2008 LG Electronics Inc All right reserved 9 LGE Internal Use Only Only for training and service purposes ADJUSTMENT INSTRUCTION 1 Application Range
23. 72 51 he oo 28 55 30 foo fee 21 00 joo fhe o ho leo 72 fic ie o ho 50 nc 25 fee 21 00 00 90 20 40 31 60 oo Joc 55 fee 3 loo 8 fir 00 80 51 7 foo so fso feo foo fei foo foo 8 foo foo 58 LGE Internal Use Only 8 DIGITAL DATA HDMI 2 256Byte 4 12 Internal pressure mamaa FA FE Fe Confirm whether is normal or not when between power board s ac block and GND is impacked on 1 5kV dc or 2 2kV dc for one second 4 DIGITAL DATA HDMI 3 256Byte Ye foo 10 20 30 40 50 EJ 70 oo 10 20 30 50 50 70 1 All Data HEXA Value 2 Changeable Data Serial No Controlled Data 01 Month Controlled Data 00 Year Controlled Check sum 4 7 HDCP High Bandwidth Digital Contents Protection SETTING Scaler Mstar Connect D sub Signal Cable to D Sub Jack Input HDCP key with HDCP key in program HDCP Key value is stored on EEPROM AT24C512 which is 0x80 addresses of page AC off on and on HDCP button of MSPG925 and confirm whether picture is displayed or not of using MSPG925 HDCP Key value is different among the sets 4 11 Outgoing condition Configuration When pressing IN STOP
24. Check Pin10 Check the Tuner Is the 20 communication Normal Check Pin18 Pin19 Check the Tuner Yes gt Replace Main board Yes Replace Main board LGE Internal Use Only 5 Unusual display from AV1 AV2 SCART mode CVBS Input input of SCART Jack normal Check JK600 Same as Block A Check the input source If there is normal status Replace main board RGB Input Is video input of the RGB Jac normal Check JK600 _Pin7 11 15 Yes Check IC700_Pin11 of Switching IC normal Same as Block A 6 Unusual display from AV3 SIDE AV mode CVBS Input Is video input of RCA Jack normal Check R704 Yes Same as Block A gt Check the input source If there is normal status Replace main board 7 Unusual display from Component mode CVBS Input Is video input of the Component Jack ormal Check R733 Same as Block A Copyright 2008 LG Electronics Inc All right reserved Check the input source If there is normal status Replace main board Only for training and service purposes 2175 No Check the input source No gt C
25. D TV Receiving system Analog Upper Heterodyne Digital COFDM Scart Jack 2EA PAL SECAM Scart 1 Jack is Full scart and support RF OUT analog Scart 2 Jack is Half scart and support MNT DTV OUT Video Input RCA 1EA PAL SECAM NTSC 4 System PAL SECAM NTSC PAL60 S Video Input 1EA PAL SECAM NTSC 4 System PAL SECAM NTSC PAL60 Component Input 1EA Y Cb Cr Y Pb Pr RGB Input 1EA RGB PC Analog D SUB 15PIN HDMI Input 3EA HDMI1 DTV DVI PC HDMI version 1 3 HDMI2 DTV Support HDCP HDMI3 DTV Audio Input 3EA RGB DVI Audio L R Input Component SPDIF out 1EA SPDIF out Earphone 1EA Antenna AV1 AV2 AV3 Component RGB HDMI1 HDMI2 HDMI USB 1EA For service only Copyright 2008 LG Electronics Inc All right reserved 7 Only for training and service purposes LGE Internal Use Only 6 Component Video Input Y Pn No Specification Remark Resolution H freq kHz V freq Hz 1 720 480 15 73 60 00 SDTV DVD 480i 2 720 480 15 63 59 94 SDTV DVD 480i 3 720 480 31 47 59 94 480p 4 720 480 31 50 60 00 480p 5 720 576 15 625 50 00 SDTV DVD 625 Line 6 720 576 31 25 50 00 HDTV 576p 7 1280 720 45 00 50 00 HDTV 720p 8 1280 720 44 96 59 94 HDTV 720p 9 1280 720 45 00 60 00 HDTV 720p 10 1920 1080
26. SAFETY PRECAUTIONS on page 3 of this publication NOTE If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication always follow the safety precautions Remember Safety First General Servicing Precautions 1 Always unplug the receiver AC power cord from the AC power source before a Removing or reinstalling any component circuit board module or any other receiver assembly b Disconnecting or 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
27. aining and service purposes exo 21 VAIN 20 v our 18 18 C 16 15 3 TU_TS_DATAI7 IU TS DATALS TU_TS_DATATS JR U TS DATA O 7 TU TS SYNC TU TS KB Booster C TU ERROR N P530 0 a591 0 M INCORPORA ROM X RA VICING IF I8 SPECFIED PARTS BE USED IMPORTANT FOR PROTECTION AICAL SHOCK RDS WHEN ONLY MANUFATUPE COMPOI OMPONE witch Ji NT 30700 1GN CENTACT 0 A MODEL T 2007 12 02 BLOCK Tuner GHEET AM g comr ver te Lus L cowp v zu 1 CVBS IN TV vour Bue BU el ow SCL A IN 25A1SsDA T112 1R IMPORTA FEATURES DATA LO An ts ols N 5 081 GENERA 550 38 32 7 a2 47 52 IC DIAGRAM INCORPORATES OTECTION FROM X RADIATION WHEN SER TCING IF IS S BE USED FOR TEA YMBO THE SCHEMETIC e
28. ance of each parts are followed each drawing and specification by part number in accordance with BOM 5 The receiver must be operated for about 20 minutes prior to the adjustment 4 Module general specification Item Specification Remark Display Screen Device 32 wide Color Display Module LCD Aspect Ratio 16 9 LCD Module 32 TFT LCD HD LG5000 MAKER 32 CMO Operating Environment Temp 0 40deg LGE SPEC Humidity 0 85 Storage Environment Temp 20 60 deg Humidity 0 85 Input Voltage 100 240V 50 60Hz Power Consumption Power on Green 32 lt 130W 10 08 120 W LG5000 LCD Backlight Type Size 32 760 x 450 V x 47 4 D LG5000 With inverter Pixel Pitch 32 0 17025 H x 0 51075 V LG5000 Back Light 32 16CCFL Straight type LG5000 Display Colors 16 7M 16 777 216 Coating 3H AG Copyright 2008 LG Electronics Inc All right reserved 6 LGE Internal Use Only Only for training and service purposes 5 Model general specification Item Specification Remark Market EU PAL Market 26 Countries DTV amp Analog UK France Germany Spain Sweden Finland Italy Netherland Belgium Luxemburg Greece Denmark Czech Austria Hngary Switzerland Croatia Turkey Analog Only Poland Portugal Norway Bulgaria Serbia Slovenia Russia Romania Broadcasting system PAL BG PAL DK SECAM LIL DVB T I
29. ct the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the U with long nose pliers to insure metal to metal contact then solder each connection Power Output Transistor Device Removal Replacement 1 Heat and remove all solder from around the transistor leads 2 Remove the heat sink mounting screw if so equipped 3 Carefully remove the transistor from the heat sink of the circuit board 4 Insert new transistor in the circuit board 5 Solder each transistor lead and clip off excess lead 6 Replace heat sink Diode Removal Replacement 1 Remove defective diode by clipping its leads as close as possible to diode body 2 Bend the two remaining leads perpendicular y to the circuit board 3 Observing diode polarity wrap each lead of the new diode around the corresponding lead on the circuit board 4 Securely crimp each connection and solder 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
30. e Mode by pushing ADJ key Enter White Pattern off of service mode and change off on Enter ADJUST by pushing gt key at 3 W B ADJUST 3 W B ADJUST EZ ADJUST TEMPERATURE 1 ADC ADJUST 2 SUB B C ADJUST RRAN 4 WHITE PATTERN Off Off 5 2HOUR OFF R OFESET cory ALL 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 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 12 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
31. excessive component temperatures Copyright 2008 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
32. heck the 700 If there is normal status Replace main board LGE Internal Use Only 8 Unusual display from RGB mode s video input of the RGB jack normal Check JK703_Pin1 No Check the input source Is waveform of Switching IC normal Check IC700 Pin11 12 13 Check the 700 No If there is normal status Replace main board Same as Block A 9 Unusual display from HDMI 1 2 3 mode Is video input of the HDMI jack normal Check JK900 901 902 No Check the input source Check DDC communication Check the 1C900 901 IC903 lines IC900 901 903 si _Pin5 6 No Check the IC902 and DHCP value Check HDCP communication lines IC902 Is waveform of Switching IC normal Check IC902 No gt Check the 16902 No If there is normal status Replace main board Same as Block A Copyright 2008 LG Electronics Inc All right reserved 18 Only for training and service purposes LGE Internal Use Only 10 No Sound 1 Symptom 1 LED is blue 2 Screen display but sound is not output 2 Check process All input is no sound Yes Download the EDID data Only HDMI i ne 15 no Sound Yes No
33. neral Guidance An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line Use a transformer of adequate power rating as this protects the technician from accidents resulting in 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 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
34. ock reasons prior to applying power to the Copyright 2008 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
35. quickly to avoid overheating the circuit board printed foil d Closely inspect the solder area and remove any excess or splashed solder with a small wire bristle brush LGE Internal Use Only 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 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 Conne
36. rcos TS Dl4l NT ROUT MODEL E BLOCK GHEET PHOG 57972 050 1 7 1 4 Ts 0171 dog co rores POM 0E N Dsus C lapic Lue 1p c 9 A coMp Po 083007 E C PEJ024 0 2200F sov 2209F Sov T TERMINAL2 SHIELD PLATE J EEPROM WE IMPORTANT AND El SHOCK ESSENTIAL THAT ONLY MANUFATURE THE CRITICAL COMPONENTS IN THE SYMBOL OF IED PARTS BE U MARK OF THE 5 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes T GENERAL 7 AM gt DSUB DET m ye oswa EVAL L pUF_TS_paTalo PCR ATET tose zu 46V GENERAL EN 16 yo PCM_IAGALN 0 it t6 83955
37. should be between 1 and 5 2 When the exposed metal has no return path to the chassis the reading must be infinite An other abnormality exists that must be corrected before the receiver is returned to the customer Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes Leakage Current Hot Check See below Figure Plug the AC cord directly into the AC outlet Do not use a line Isolation Transformer during this check Connect 1 5K 10watt resistor in parallel with a 0 15uF capacitor between a known good earth ground Water Pipe Conduit etc and the exposed metallic parts Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms volt or more sensitivity Reverse plug the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part Any voltage measured must not exceed 0 75 volt RMS which is corresponds to 0 5mA In case any measurement is out of the limits specified there is possibility of shock hazard and the set must be checked and repaired before it is returned to the customer Leakage Current Hot Check circuit AC Volt meter Good Earth Ground such as WATER PIPE CONDUIT etc L To Instrument s 0 15uF exposed METALLIC PARTS E 1 5 Kohm 10W LGE Internal Use Only SERVICING PRECAUTIONS CAUTION Before servicing receivers covered by this service manual and its supplements and addenda read and follow the
38. the circuit board 1 Remove the defective copper pattern with a sharp knife Remove at least 1 4 inch of copper to ensure that a hazardous condition will not exist if the jumper wire opens 2 Trace along the copper pattern from both sides of the pattern break and locate the nearest component that is directly connected to the affected copper pattern 3 Connect insulated 20 gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead of the nearest component on the other side Carefully crimp and solder the connections CAUTION Be sure the insulated jumper wire is dressed so the it does not touch components or sharp edges LGE Internal Use Only SPECIFICATION NOTE Specifications and others are subject to change without notice for improvement 1 Application range 3 Test method This specification is applied to the LCD TV used LD84A 1 Performance LGE TV test method followed chassis 2 Demanded other specification Safety CE IEC specification 2 Requirement for Test EMCEE IEG Each part is tested as below without special appointment Model Market Appliance 32LG5000 ZA EU PAL market Safety IEC EN60065 1 Temperature 25 59 77 9 F CST 40 5 C EMI EN55013 2 Relative Humidity 65 10 EMS EN55020 3 Power Voltage Standard input voltage 100 240V 50 60Hz Standard Voltage of each products is marked by models 4 Specification and perform
39. website http biz LGservice com LG LCD TV CHASSIS LD84A MODEL 32LG5000 32LG5000 ZA 32LG5010 32LG5010 ZD 32LG5020 32LG5020 ZB 32LG5030 321 5030 2 CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CUm CONTENTS CONTENTS 2 PRODUCT SAFETY 3 6 ADJUSTMENT INSTRUCTION 10 TROUBLE SHOOTIN e reaa oaeaeei 14 BLOCK DIAGRAM ae Eana a 20 22 SVG SHEET e eeec Copyright 2008 LG Electronics Inc All right reserved 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 Replacement Parts List It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock Fire or other Hazards Do not modify the original design without permission of manufacturer Ge
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