LCD TV SERVICE MANUAL
Contents
1. 8 Q 4 H W OPTION 3 ELECTRONICS 4 gases L R or SID H8 MSTAR DD HD LGE6891 IO EAX40043809 MSTAR LP81A Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes NON EU OPTION TW9910 block SW L R COMP2 LGElectronics SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE ASYMBOL MARK OF THE SCHEMETIC THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF 18 LGE Internal Use Only L8VDDC L8VDDA 433VDDP 433VDDA 1C703 USB 33VDDP EAX40043809 MSTAR LP81A2. EDID Data Item Condition Data Manufacturer ID GSM 1E6D Version Digital 1 01 Revision Digital 3 03 lt HDMI 1 256bytes gt The data is same without Physical address kiir 00 01 02 9J Q4 05 06 97 08 09 OC 00 DE OF bhi 00 FF FF FF EF FF FF amp 3 1E amp D F 01 8 4 27 7 1 1T D 1011 57 49 821258 45 40 81 40 01 01 Di 01 19 00 30 41 00 1E 30 ID 43 21 504251 00 18 10 8 BB Qd 77 21 82 900 JC 00 DO di 1754 Es 08 20 20 TE NITUU UD DD FD 0F 00 84 20 20 10 20 20 20 01 ti Fl 07 i 12 13 04 14 10 23 0 87 07 83 0189 00 68 03 9 100 2D Di 1D BD 51 E 1 20 4D 3d BC 88 21 00 DB D Do NA 20 Eb fD 10 amp 09 12 BE 21 59 00 18 40 14 51 FO r TC 43 DO 21 00 DD 3 01 10 ED i3 16 34 2C 20 80 21 49 00 E DB 69 DB 54 00 00 00 42 00 00 00 49 00 00 00 gt Physical address F HDMI 1 gt 10 Detail EDID Options are below A B C D E F A Product ID Model Product ID Name Dec Hex EDID table HD 4018 A 9CF5 F59C 4018 D 9CF6 F69C B Serial No Controlled on production line C Month Year Controlled on production line ex Monthly 09 09 Year 2007 gt 11 D Model Name Hex Model name Model Name HEX LG TV 00 00 100 FC 00 4C 47 20 54 56 20
3. GOALLSOVOIODS OINIO ANS E NIVIW V NVI XL DTETS A JOVINOOIN JOVINOOINE KNO ONTYdS ONTUdS OIND 2 4d IANOO UT NOD IS Ast V uw umm ToT ISW Ag e INVO 1dN0D Ad HL Tid NoD J 3 si E a Pas E ONTudS Ola OEDI A TINO LLNANOdINOO lt LNANOANOI 201 V LSYN O6OStrOOFrXwu LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LG Electronics Inc
4. Haya C TETHCIVI AN HAVIA E Ishiavix Ishiaviw chiavi vas ola vn IGV p 9 ovas TOLVA SONIZIV 1 oin 40001 062 1 ISIN OIV LV CIN 9 Iclwavaw POSSA lelwavaw uod sada OSSA eI v Lv ax swaf ISIVIVAA 9Iv Lv nx LLIVIVAN sida Is v Lv raaa 106 4 T HOtO9IO9SCOCISCHAH c 1 01 v Lv a LSW 0 VI8d TIV LSIN 608tv00PXVH LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes H W OPTION 2 H W OPTION 1 Jaratan AT24ACG4AN 108U 2 7 FLASH ZORAN MODEL DATE T 9e
5. OLLIINSHOS SIHL 40 NAVN TORN AST 1 lt SAAO ids 1 T 60 OS Ifdd Lad OaGIA 5 lt ANT SLANI 2 E sos dE INVO INON INI 5 Y orav lt 140 NVO INVO LOV LNOolaul OMA ONRidS NIX 3dI lt 2 LLOV INOOlT NVI DAT NIT ACIS lt 1 TONTadSs NVO TIOV LNOO CA IOV INOOLTAI dI HA ona OHM 4 VOTAT AV HCIIS CLOV INOOLT VI8d I 2IV LSIN 608 700 LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LLOdNI 52005129997 ee YAW EE 91 11211111 80 10 8007 3194 140 6 Od OctcS c Id WNOO ILNMANI vas 40801 TOS 8081 arus Q 10 4 COZCcSCII WV V6009TTSAO ANS LE8TOWANA cC APTO IN IIATATO SI 1S COO FC I ANNOS Dd WALI ILIAN
6. 0 7 1 1 YHANAL NON OOSAL NVISd I 2I V LSYN 6OS8trOOVrxXw u LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes E ee 80 1 0 8007 5110041338 910 TOALNOI indino punos OV NOOSLSE LLO N d S 8 Sc VA CVIOOOSAI LLO N dDCSOCOSC WALI LILIAN avag avag avaa avaa avaa avaa x x x xc LOFT 90rO Stt 59004929957 ouawaHos IHL 40 AYN NI SLNINOdINOO 3 04 48M Ad SLAVd 09149945 SSSOLVHONVIN LVHL SqHVZVH YOOHS ANY JATA NOLLVIQV3E X INO34 NOLLOSLLOWd LNVLYOdWI SINNALVIH 1 845 SALVYOdYOONI AVADVIO 6 SIH L dO IO8INAS NUT dol 000 LOFT ler 1 ISW tmc ja 8080 T quo T 901 177 0rT O CIHd meus ce ONIS ISW Att man
7. Mode Color coordinate Temp Auv X Y Cool 0 276 0 002 0 283 0 002 11 000 0 000 Warm 0 313 0 002 0 329 0 002 6 500K 0 003 To check the Coordinates of White Balance you have to measure at the below conditions Picture Mode User 1 XD Manual XD Contrast Off XD Colour Off If you miss the upper condition the coordinates of W B can be lower than the spec LGE Internal Use Only DDC Command set 3 E2PROM Data Read 1 Signal TABLE Adjustment CMD HEX ADR VALUE detail Aging On Off F3 00 00 FF ON OO OFF 5 6 50 1 84 J A 03 l A CMD AJ ADH STOP Input select F4 00 0x10 TV Delay 150ms 0x20 AV1 STARI 6F A D1 A 4 Dal A STOP 0x21 AV2 1 0 128 Bytes MEE 0x40 Componenti R GAIN 16 00 00 0 GAIN adjustment 2 COMMAND SET G GAIN 18 00 CO CSM COOL B GAIN 1A 00 CO Adjustment contents CMD hex ADH hex ADL hex Details R GAIN 16 01 00 CO GAIN adjustment EEPROM READ E7 A0 0 0 Page 0 7F Read G GAIN 18 00 CSM NORMAL 80 0 80 FF Read B GAIN 1A 00 CO A2 0 1 0 7F Read R GAIN 16 02 00 0 GAIN adjustment 80 1 Page 80 F
8. Manual ADC process using Service Remocon After enter Service Mode by pushing ADJ key execute Auto RGB by pushing key at Auto RGB 3 3 TOOL Option Area Option 1 Profile Must be changed the option value because being different with some setting value depend on module maker inch and market 2 Equipment adjustment remote control 3 Adjustment method The input methods are same as other chassis Use IN START Key on the Adjust Remocon If not changed the option the input menu can differ the model spec Refer to Job Expression of each main chassis ass y for Option value Before PCBA check you have to change the Tool option Area option and have to AC off on Plug out and in After Tool Option Area Option change you have to AC power off Never push the IN STOP KEY after completing the function inspection 3 4 Check SW Version 1 Method 1 Push In start key on Adjust remote control 2 Check Main V3 xx wey i ig Ta 3 LX Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 10 4 EDID Extended Display Identification Data DDC Data Channel download Caution Use the proper signal cable for EDID Download 4 1 EDID DOWNLOAD Caution Never connect HDMI amp D SUB Cable at the same time Use the proper cables below for EDID Writing For HDMI EDID
9. Only for training and service purposes Circuit Board Foil Repair Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board causing the foil to separate from or lift off the board The following guidelines and procedures should be followed whenever this condition is encountered At IC Connections To repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern side of the circuit board Use this technique only on IC connections 1 Carefully remove the damaged copper pattern with a sharp knife Remove only as much copper as absolutely necessary 2 carefully scratch away the solder resist and acrylic coating if used from the end of the remaining copper pattern 3 Bend a small U in one end of a small gauge jumper wire and carefully crimp it around the IC pin Solder the IC connection 4 Route the jumper wire along the path of the out away copper pattern and let it overlap the previously scraped end of the good copper pattern Solder the overlapped area and clip off any excess jumper wire At Other Connections Use the following technique to repair the defective copper pattern at connections other than IC Pins This technique involves the installation of a jumper wire on the component side of the circuit board 1 Remove the defective copper pattern with a sharp knife Remove at
10. then stick sensor to the module when adjusting 4 For manual adjustment it is also possible by the following sequence 1 Select white pattern of heat run by pressing POWER ON key on remote control for adjustment then operate heat run longer than 15 minutes If not executed this step the condition for W B may be different 2 Push Exit key 3 Change to the AV mode by remote control Push front or Input key 4 Input external pattern 85 white pattern 5 Push the ADJ key two times entering White Balance mode 6 Stick the sensor to the center of the screen and select each items Red Green Blue Gain and Offset using D e CH key R C 7 Adjust R G B Gain using c VOL key 8 Adjust two modes Cool and Warm Fix the one of R G B and change the others 9 When adjustment is completed Exit adjustment mode using EXIT key on R C CASE First adjust the coordinate far away from the target value x y 1 x y gt target 1 Decrease the R G 2 x y lt target 1 First decrease the B gain 2 Decrease the one of the others 3 x gt target y lt target 1 First decrease B so make y a little more than the target 2 Adjust x value by decreasing the R 4 x lt target y gt target 1 First decrease B so make x a little more than the target 2 Adjust x value by decreasing the G Standard color coordinate and temperature when using the CA100 or CA210 equipment
11. Y PB PR Resolution H freq kHz V freq kHz Pixel clock MHz Proposed 720 480 15 73 59 94 13 500 SDTV DVD 4801 525 720 480 15 75 60 00 13 514 SDTV DVD 4801 525 720 576 15 625 50 00 13 500 SDTV 5761 6251 50Hz 720 480 31 47 59 94 27 000 SDTV 480P 720 480 31 50 60 00 27 027 SDTV 480P 720 576 31 25 50 00 27 000 SDTV 576P 50Hz 1280 720 44 96 59 94 74 176 HDTV 720P 1280 720 45 00 60 00 74 250 HDTV 720P 1280 720 37 50 50 00 74 25 HDTV 720P 50Hz 1920 1080 28 125 50 00 74 250 HDTV 10801 50Hz 1920 1080 33 72 59 94 74 176 HDTV 10801 1920 1080 33 75 60 00 74 25 HDTV 10801 1920 1080 56 25 50 148 5 HDTV 1080P 1920 1080 67 432 59 94 148 350 HDTV 1080P 1920 1080 67 5 60 00 148 5 HDTV 1080P Copyright 2009 LG Electronics Inc All right reserved 7 Only for training and service purposes LGE Internal Use Only 7 HDMI input DTV Resolution H freq kHz V freq kHz Pixel clock MHz Proposed Remark 720 480 15 73 59 94 13 500 SDTV DVD 480 525 Spec out but display 720 480 15 75 60 00 13 514 SDTV 4801 525 720 576 15 625 50 00 13 500 SDTV DVD 5761 6251 50Hz 720 480 31 47 59 94 27 SDTV 480P 720 480 31 5 60 27 027 SDTV 480P 720 576 31 25 50 27 SDTV 576P 1280 720 44 96 59 94 74 176 HDTV 720P 1280 720 45 60 74 25 HDTV 720P 1280 720 37 5 50 74 25 HDTV 720P 1920
12. 14 mode data write SyncFlags HPeriodH HPeriodL VtotalH VtotalL SrcHTotalH SrcHTotalL SrcHStartH SrcHStartL SrcVStartH SrcVStartL HsyncPhase 3 Random Data write write the appointment Address of E PROM Copyright O 2009 LG Electronics Inc All right reserved Only for training and service purposes 12 LGE Internal Use Only TROUBLESHOOTING VOOOEdLN 2 LYVd imam 021689491 HSV IJ 5 uaa WAN NIVIA NIVIN 01 MO Vr 191P XNN INAH XAN WAN aida OVdISESGNL 138 ansa MS Oldnv MS e 990t0H 4OW NI 44 LNO ANIT ino ann 310IN NM LNO SHAD RT T NI 315 NI NI SAO YANNL LGE Internal Use Only 13 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 1 No power 1 Symptom 1 It is not discharged minutely from module 2 Light does not come into the front LED 2 Check process Is the power cord No plugged in Are the line filter and No PSU connected Is the fuse of PSU No normal F101 Is it connected that PSU and P1100 No in Main B D Yes After all cables connect is removed to PSU the AC voltage marking is authorized on manual When ST BY 5V is
13. Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LOLOI SDRAM A A Proa loliyawva lorvaivar eo Ielivanvar Isulvanvar Inova fennel Tv Nl TIG Iava ur gavia zm LGE Internal Use Only mawa sun Sowa 2008 01 08 MSTAR N EU_ DATE BLOCK USB MPEG ELECTRONICS SECRET LGElectronics ES RADIATION CHEMETIC DIAGRAM INCORPOR FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS FOR PROTECTION FROM ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE ASYMBOL MARK OF THE SCHEMETIC SPECIAL FEATURES IMPORTA DIRE ony Fonero LOdNI ZLOANIPO ILOdNI 1110 NIV INV AJ0 14 1300W uomdg 1210H THLOH 30 NAVN TOAWASW SHL SINSNOdINOO TVOLLIWO 531081338 91 138535 A I HCIIS TdINOOD M S
14. O pnv tod X09 4350136 51 4 09142945 SSOLLVHONVIN LVHL IVLLNHSSH SI I ONIDIANAS NAHM STIVZVH X20HS 1 ANY FATA NOLLVIQV3EX WOU NOLLOS IO Id 910 LNV LHOdIAT SAYA LV Ad TVIOSdS SALVYOdYOONI AVADVIO OLLHIASHOS SIHL dO IOSIAS AHL 405 i 1 AS ITAW ASH ASH V CIONLINOO et 1 TIANO ILAW ASH gt TAS INIT ACIS ITAW ASH AS OCHO V990FOHTLOIN ped 198 ITAN AS VO00 dLN 00921 18544 MS 201 V LSYN Hd LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes vt LH sese 3190 NOLLdO Attld L d O0LH LAV L 1006141 XII 18004 STINT NG SOLO ousWaHoS JHL 30 XUV TOWA SAHL NI SLNSNOdWOO IHL 304 ASA 38 81 4 142445 SAYALVANNWW ATNO TVLLNASSA 134345 SI AI 6 STHVZVH 5 ANY JATA NOLLVIGVY X NOLLORLIO Wd INV DIOdIAT SINNALVAA TVIOddS SALVYOdYOON VOV OLLIINSHOS SIH L 40 NAVIA OGINAST IHL C THIHS YANAL Ds t VAS PU MANALI ASt 2 001
15. S xd Tad AS JA AS TIOS dd Ivds Odd hn 18 Ast 9 INAH CIIAS c CIT IO IV ANINIO H 1S COO VC I ESINL HXA SINL lt lt SAWL lt OXY lt SANL lt lt JD L 1 DS odd Odd lt AVS LL ININ LAT NAH T ISW T M S CSOINL 5 Dor SONL OXYUZSINL OXY SAL lt lt Oa e CDS odd Odd VI8dT AVLSIN lt LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 1ddH5 52 042 0 NAVIN NI SLNINOdINOD IVLLIIO AHL rry 43413 24115 91 304 38 SLAVA EE EE LVHL 80 10 8007 4180 oanuvisw 14421465 SI dl DNIDIAYAS NAHM SCAWZVH WORLLOATA ANV WOW LNVLUOANT STANLY 12848
16. 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 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 inf
17. 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 LP81A chassis 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC Specification 2 Requirement for Test EMG Each is tested as below without special appointment 1 Temperature 25 5 C 77 9 F CST 40 5 2 Humidity 6596 1096 3 Power Standard input voltage 100 240 50 60Hz Standard Voltage of each products is marked by models 4 Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM 5 The receiver must be operated for about 20 minutes prior to the adjustment 4 General Specification LCD Modul
18. 1080 28 125 50 74 25 HDTV 10801 1920 1080 33 72 59 94 74 176 HDTV 10801 1920 1080 33 75 60 74 25 HDTV 10801 1920 1080 56 25 50 148 5 HDTV 1080P 1920 1080 67 432 59 94 148 350 HDTV 1080P 1920 1080 67 5 60 00 148 5 HDTV 1080P 1920 1080 27 24 74 25 HDTV 1080P 1920 1080 33 75 30 74 25 HDTV 1080P Copyright 2009 LG Electronics Inc All right reserved 8 LGE Internal Use Only Only for training and service purposes ADJUSTMENT INSTRUCTION 1 Application Range This spec sheet is applied all of the 26 32 LCD TV LP81A chassis HURRICANE 5 by manufacturing LG TV Plant all over the world 2 Specification 1 Because this is not a hot chassis it is not necessary to use an isolation transformer However the use of isolation transformer will help protect test instrument 2 Adjustment must be done in the correct order 3 The adjustment must be performed in the circumstance of 25 5 of temperature and 65 10 of relative humidity if there is no specific designation 4 The input voltage of the receiver must keep 100 220V 50 60Hz 5 The receiver must be operated for about 5 minutes prior to the adjustment when module is in the circumstance of over 15 In case of keeping module is in the circumstance of 0 C it should be placed in the circumstance of above 15 C for 2 hours In case of keeping module is in the circumstance of below 20 C it should be placed in the circumstance of above 15 C for 3 hours 3 PCB assem
19. 20 20 20 20 20 20 E Checksum Changeable by total EDID data LGE Internal Use Only 4 2 HDCP SETTING High Bandwidth Digital Contents Protection Before HDCP Download you have to Set the Configuration that CMD delay Configuration gt Option gt 2 delay Write Byte 0 5 ms Read Byte 0 5ms Read CMD Byte 0 5ms Change the DDC gt After Write Data delay Time 20ms also Change the After Send Read Command delay Time 20ms Check the Communication Clock gt 45KHz 1 Connect D sub Signal Cable to D Sub Jack 2 Input HDCP key with HDCP key in program 3 HDCP Key value is stored on EEPROM AT24C64 which is From 0x80 addresses of page 4 AC off on and on HDCP button of MSPG925 and confirm whether picture is displayed or not of using MSPG925 5 HDCP Key value is different among the sets 4 3 Adjustment of White Balance Purpose Adjust the color temperature to reduce the deviation of the module color temperature Principle To adjust the white balance without the saturation Fix the one of R G B gain to CO and decrease the others Adjustment mode Two modes Cool and Warm Medium data is automatically calibrated by the Cool data Required Equipment 1 Remote controller for adjustment 2 Color Analyzer 100 or CA 210 or same product ch 9 3 Auto W B adjustment instrument only for Auto adjustment 1 Connect
20. ANNANN ONZLIHS a 29c 00CAINS IVINAON E DOHDOZAVIAS STON XL ONL OX LL TX L 087 XL 09 XL SOOXLHOF OX AOX HA OKLA 8X LCHOX X UNL HOON em amc Ace AHAVA NVISd I 20 V LSYN LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 80 10 8007 om MINIS Vas ANIS TOS IZ NNNNNNNNN YD VdISESIAL wars ccv L UND TIOS T 9 L ODA cca n 8 ODA rea TC 91 411070 806 Oi ESCIAL ESCINL IXY ESCINL 0 ESCINL OXY 683 yn ESCINL OXY 108 evas odd NAH ACIS too nes CDS dd 2 IRSA O SINL s Essig OXA SAL gt gt S 25 o SANL 2 ap IXA SONL 1 SONL gt LSIN ASA LSIN Gineyoqd MS HS MS NIOLLdO cINLC 7 SNL 31 M
21. F Read G GAIN 18 00 CSM WARM A4 0 2 Page 0 7F Read B GAIN 1A 00 CO 80 2 Page 80 FF Read CSM mode F2 00 00 COOL A6 0 3 Page 0 7F Read 01 NORMAL 80 3 Page 80 FF Read 02 WARM OG elie Osa adjustment Purpose To read 84h the appointment Address of EZPROM 1 Gain adjustment by 128 80h byte 2 Offset and Gain adjustment EEPROM Read 00 00 EEPROM read EEPROMWrite E8 00 data EEPROM write 5 DDC command protocol 5 1 Signal TABLE 5 6 50 84 AJICMD A ADR AJ VAL A CS A STOP 5 2 Data Write 1 Signal TABLE 20 4 1 AJJADH Data TT Data_n A CS STOP Delay 20m LEN 84h Bytes CMD E8h ADH E2PROM Slave Address A0 A2 A4 A6 Not 00h Reserved by ADL E2PROM Sub Address 00 FF Data Write data Delay 20ms 2 Command Set Adjustment contents CMD hex LEN Details EEPROM WRITE E8h 94 16 Byte Write 84 n h n byte Write Purpose 1 EDID write 16 byte by 16 byte 8 order 128 byte write TO 00 7F of EEPROM 2 FOS Default write
22. North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com CHASSIS LP81A MODEL 32LF15R 32LF15R MA CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL gt P NO MFL41394480 0904 00 Printed in Korea CONTENTS CONTENTS score o aer tinca 2 SAFETY PRECAUTIONS cissie niniaren aaraa 3 SPECIFICATION 2 6 ADJUSTMENT INSTRUCTION ii on s aiia nsa 9 TROUBLE SHOOTING icons nennen dor ton ied d npn 13 BLOCK DIAGRAM as iini sexi dai i haa us exin ia ink wg RR KR 18 EXPLODED VIEW sida 19 SVG EE E A Copyright O 2009 LG Electronics Inc All right reserved 285 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 in the Schematic Diagram and Exploded View It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock Fire or other Hazards Do not modify the original design without permission of manufacturer General Guidance An isolation Transformer should always be used during the servicing of a receiver whose chassis
23. Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 6066 AIL 5200 49998 Aa SINE 51 27020250 so ro sooz d1UQ AVISA 14 144245 SI AI ANY IATA NOLLVIQV3 X INO H NOLLOSLLO ld SIANLVIA TVIOHdS SELL V3OdOONI IANV3DVIG OLLIINHHOS SIHL JO AYVIA TOSNXS JHL i WD 969 28d lt 1 iP one SL x NNN 5 Irloso oad 900131 O00 LOI 0017 0014 Med vas DIETA ued TOS AG e 19 MS Ic 5 1 41170 00012 09202 CAVAS I 3 0012 ad t 1001 VIXVIN VI8d I AVLSIN 608 cCVrOOVr XV A LGE Internal Use Only Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 5210429 31111 91 22987 sonos 190 avis 130 195235 SI dl 8 TVOhLOS TH ANY NOLLVIQV3EX WOU NOLLOS LLO3Hd INVLYOdWI SH30LVH IVIOHdS SHLV3Od3OONI INVSIDVIG OLLHINHHOS SIHL JO NAVIA 5 ZOT6TLIENVA XINAH 8S VINOWIO NIVIA WALI ITAN
24. Tuner LGE Internal Use Only 4 Unusual display from rear AV mode Is video input of the A V Jack normal Check R8044 Check the input source Same as Block A 5 Unusual display from component 2 model Is video Jack normal Check 8030 32 33 Check the input source Change 801 Copyright 2009 LG Electronics Inc All right reserved 16 Only for training and service purposes LGE Internal Use Only 6 No Sound 1 Symptom 1 LED is green 2 Screen display but sound is not output 2 Check process All input mode is no sound Yes Only HDMI is no sound Yes Only AV COM2 PC input is no sound Only RF is no sound Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes No 600 normal Yes Check the signal after IC600 refer to circuit diagram No Check the Tuner In Out 17 Is the speaker on it menu Yes No Download the Is the speaker gt EDID data cable normal Yes No No Is the output of Replace 600 Is 801 operated normality Yes Is 601 operated normality Yes Replace Main B D No Set on speaker in menu No Check the Speaker
25. bly adjustment method 3 1 Mstar Main S W program download 1 Preliminary steps 1 Download method 1 PCB Assy 2 Connect the download jig to D sub jack 2 Download steps 1 Execute ISP Tool program in PC then a main window will be opened mme MM Mstar p a Ee Copyright 2009 LG Electronics Inc All right reserved 9 Only for training and service purposes 2 Click the connect button and confirm Dialog Box 3 Click the Config button and Change speed E2PROM Device setting over the 350Khz 4 Read and write bin file Click 1 Read tab and then load download file XXXX bin by clicking Read 5 Click Auto 2 tab and set as below 6 click Run 3 7 After downloading check 4 message LGE Internal Use Only 3 2 Auto color balance ADC Component 1 Method of Auto Component Color Balance 1 Convert to Component in Input source 2 Input the Component Which has 720p 260Hz 100 Color Bar YPbPr signal into Component MSPG 925F Model 217 Pattern 65 3 Adjust by commanding AUTO COLOR ADJUST 0 1 0x00 0x02 instruction 2 Confirmation 1 We confirm whether OxF3 offset OxF4 gain address of EEPROM is or not 2 If OxF4 address of EEPROM OxBC isn t we adjust once more 3 We can confirm the ADC values from 0 06 0 0 addresses in a page
26. cable No Replace 801 No Replace IC601 LGE Internal Use Only BLOCK DIAGRAM 20891 NO 1H AcL HMd Noudaa 148 gt X19 ZO 148 l 4 p P 1859 98 ONAS ONIININIG 19313S NO 1H le TALOH HOZ 30 OV NIVIN Scl 18vd 713839 MS 197 3M19X1 OMTOXL 9 0 1 0109 1 181 0 VL VGIN INGH T3S ANIS 9 y 215 WV 1 7235 EEE SAS 7 NIVIAN NIVIN 10131 dd A 3NIT 310W Y X LNN NIH 1 SAAD NI AV lt 002 NIA 59 9 vorar DAS ansa 211 gy LSW GdH GdH LAG AS LOSA M S GdH Odd SGWL ALG oad 00601 y LGE Internal Use Only 18 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes EXPLODED VIEW IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by A in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended
27. ct 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 9096 9996 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
28. e Item Specification Measurement Result Remark Display Screen Device 26 wide Color Display Module Resolution 1366X768 32 wide Color Display Module Resolution 1366X768 Aspect Ratio 16 9 LCD Module 26 TFT WXGA LCD 26 HD MAKER LGD 32 TFT WXGA LCD 32 HD MAKER LGD Operating Environment 1 Temp 0 40 deg LGE SPEC 2 Humidity 0 85 Storage Environment 1 Temp 20 60 deg 2 Humidity 0 85 96 Input Voltage 100 240 50 60Hz Power Consumption Power on Blue LF15R Volume 1 8 volume of sound distortion point 110W 26 HD lt 160W 32 HD St By Red lt 1 0W Copyright 2009 LG Electronics Inc All right reserved 6 LGE Internal Use Only Only for training and service purposes 5 Model Specification NON EU Item Specification Remark Market NON EU CHINA Broadcasting system PAL SECAM B G D K PAL 1 11 NTSC M Available Channel BAND PAL NTSC China DK Australia BG VHF UHF 2 69 2 78 VHF UHF 1 062 1 75 CATV 51 547 1 71 CATV S1 S41 52 544 Receiving system Upper Heterodyne Video Input 1EA PAL SECAM NTSC Rear AV Output 1EA PAL SECAM NTSC Rear Audio Out 80 for commercial china Component Input 1EA Y Cb Cr Y Pb Pr Rear HDMI Input 1EA HDMI DTV Only PCM MODE Audio Input 2EA Component 1EA AV 1EA L R Input 6 Component Video Input
29. in this manual to prevent X RADIATION Shock Fire or other Hazards Do not modify the original design without permission of manufacturer Copyright 2009LG Electronics Inc All right reserved 19 LGE Internal Use Only Only for training and service purposes SCHEMATIC DIAGRAM 91 SALVYOdYOONI NV35VIG OLLIINIHOS SIHL 40 XUV IO8WAS 7 HHL Age INW AGH ASC CICI AS HOLIMS AS lt ATI UWAS did AcCL 202 ATT L YHANN LNO z s Anozz 1enba AALAAANOD LOW ASH ILIAN ASAS AS 19 DIA HOLIMS NO THINVd anv riaw 2av sanas oi p TEAC ESTAS LS ONIININIG Nd dSId SS SOTIA yopora HONG OVC OO0CAS V IAS C IC 61 LI 1 l SALVIS TINVd av x x cs sorna NIOLLdO TANVd VISTI AVLSIN VA LGE Internal Use
30. ing diagram of equipment for measuring For Automatic Adjustment PMT AA EC arial comarca c PCT 1 Enter the adjustment mode of DDC Set command delay time 50ms Enter the DDC adjustment mode at the same time heat run mode when pushing the power on by power only key Maintain the DDC adjustment mode with same condition of Heat run Maintain after AC off on in status of Heat run pattern display 2 Release the DDC adjustment mode Release the adjust mode after AC off on or std by off on in status of finishing the Hear run mode Release the Adjust mode when receiving the aging off command F3 00 00 from adjustment equipment Need to transmit the aging off command to TV set after finishing the adjustment Check DDC adjust mode release by exit key and release DDC adjust mode Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 11 3 Enter the adjust mode of white balance Enter the white balance adjustment mode with aging command F3 00 FF Luminance min value is 200 gt in the cool mode For LCD 4 4 Adjustment of White Balance for Manual adjustment 1 Adjustment mode Two modes Cool and Warm Medium data is automatically calibrated by the Cool data 2 Color analyzer CA100 CA210 should be used in the calibrated ch by CS 1000 LCD CH9 PDP CH10 3 Operate the zero calibration of the CA100 or CA 210
31. inite An other abnormality exists that must be corrected before the receiver is returned to the customer Copyright 2009 LG Electronics Inc All right reserved 2 Only for training and service purposes Leakage Current Hot Check See below Figure Plug the AC cord directly into the AC outlet Do not use a line Isolation Transformer during this check Connect 1 5K 10watt resistor in parallel with a 0 15uF capacitor between a known good earth ground Water Pipe Conduit etc and the exposed metallic parts Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms volt or more sensitivity Reverse plug the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part Any voltage measured must not exceed 0 75 volt RMS which is corresponds to 0 5mA In case any measurement is out of the limits specified there is possibility of shock hazard and the set must be checked and repaired before it is returned to the customer Leakage Current Hot Check circuit AC Volt meter Good Earth Ground such as WATER PIPE CONDUIT etc To Instrument s 0 15 METALLIC PARTS AM gt 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 SAFETY PRECAUTIONS on page 3 of this publication NOTE unforeseen circumstances create confli
32. nd crimp the U with long nose pliers to insure metal to metal contact then solder each connection Power Output Transistor Device Removal Replacement 1 Heat and remove all solder from around the transistor leads 2 Remove the heat sink mounting screw if so equipped 3 Carefully remove the transistor from the heat sink of the circuit board 4 Insert new transistor in the circuit board 5 Solder each transistor lead and clip off excess lead 6 Replace heat sink Diode Removal Replacement 1 Remove defective diode by clipping its leads as close as possible to diode body 2 Bend the two remaining leads perpendicular y to the circuit board 3 Observing diode polarity wrap each lead of the new diode around the corresponding lead on the circuit board 4 Securely crimp each connection and solder it 5 Inspect on the circuit board copper side the solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch at stake top 3 Solder the connections CAUTION Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures Copyright 2009 LG Electronics Inc All right reserved 5
33. not operated replace PSU Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes Plug in the power cord Connect the cable to SC100 Replace the fuse Connect a cable P1100 14 LGE Internal Use Only 2 No Raster 1 Symptom 1 No OSD and image occur at screen 2 It maintains the condition where the front LED is green 2 Check process Does Is output the normality Low High voltage except Stand by 5V Replace the Power board No minute discharge gt gt Is the inverter gt at Module NaVs on Yes Yes Check the LCD Module Is the link cable ae Reconnect Panel line cable normal HD P403 Yes de Replace the VSC output normal 3 Unusual display from RF mode video output of the input voltage Tuner normal Check normal Check Y No Yes Check the power Block A Is the LVDS No Cable connected Cable inserts well well Yes Change the IC IC801 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes Yes Is the 2 communication normal Check Pin9 Pin10 y o Check the
34. rea and remove any excess or splashed solder with a small wire bristle brush LGE Internal Use Only IC Remove Replacement Some chassis circuit boards have slotted holes oblong through which the IC leads are inserted and then bent flat against the circuit foil When holes are the slotted type the following technique should be used to remove and replace the IC When working with boards using the familiar round hole use the standard technique as outlined in paragraphs 5 and 6 above Removal 1 Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts 2 Draw away the melted solder with an anti static suction type solder removal device or with solder braid before removing the IC Replacement 1 Carefully insert the replacement IC in the circuit board 2 Carefully bend each IC lead against the circuit foil pad and solder it 3 Clean the soldered areas with a small wire bristle brush It is not necessary to reapply acrylic coating to the areas Small Signal Discrete Transistor Removal Replacement 1 Remove the defective transistor by clipping its leads as close as possible to the component body 2 Bend into 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 a
35. ricity 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 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 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 a
36. served 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 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 elect
37. voltage interlocks with which receivers covered by this service manual might be equipped 6 Do not apply AC power to this instrument and or any of its electrical assemblies unless all solid state device heat sinks are correctly installed 7 Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead Always remove the test receiver ground lead last 8 Use with this receiver only the test fixtures specified in this service manual CAUTION Do not connect the test fixture ground strap to any heat sink in this receiver Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easily by static electricity Such components commonly are called Electrostatically Sensitive ES Devices Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor chip components The following techniques should be used to help reduce the incidence of component damage caused by static by static electricity 1 Immediately before handling any semiconductor component or semiconductor equipped assembly drain off any electrostatic charge on your body by touching a known earth ground Alternatively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent potential shock reasons prior to applying power to the Copyright 2009 LG Electronics Inc All right re
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