LG Electronics 328*** Flat Panel Television User Manual
Contents
1. No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed 1 720 576 15 625 50 00 13 5 SDTV DVD 5761 2 720480 15 73 60 00 13 5135 SDTV DVD 4801 720 480 15 73 59 94 13 50 SDTV 4801 4 720 576 31 25 50 00 27 00 SDTV 576 5 720 480 31 50 60 00 27 027 SDTV 480P 6 720 480 3147 59 94 27 00 SDTV 480P 1280 720 37 50 50 00 74 25 HDTV 720P 8 1280 720 4500 60 00 74 25 HDTV 720P 9 1280 720 44 96 59 94 74 176 HDTV 720P 10 1920 1080 28 125 50 00 74 25 HDTV 10801 11 1920 1080 33 75 60 00 74 25 HDTV 10801 12 1920 1080 33 72 59 94 74 176 HDTV 10801 13 1920 1080 56 25 50 00 148 50 HDTV 1080P 14 1920 1080 67 50 60 00 148 50 HDTV 1080P 15 1920 1080 67 432 59 94 148 352 HDTV 1080P 16 1920 1080 27 00 24 00 74 25 HDTV 1080P 17 1920 1080 26 97 23 94 74 176 HDTV 1080P 18 1920 1080 33 75 30 00 74 25 HDTV 1080P 19 1920 1080 33 71 29 97 74 176 HDTV 1080P 5 2 RGB Input PC HD Model No _ Resolution H freq kHz V freq Hz Pixel clock MHz Proposed DDC 1 640 480 31 469 59 94 2547 VESA VGA 2 800 600 37 879 60 31 40 00 VESA SVGA 1024 768 48 363 60 00 65 00 VESA XGA o 4 1152 864 54 348 60 053 80 00 VESA o 5 3 RGB Input PC FHD Model No Resolution H freq kHz Pixel clock MHz Proposed DDC 1 640 350 312. LGElectronics Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes RGB PC SPDIF PC AUDIO MODEL GP4L_S7LR2 2011 09 27 LG ELECTRONICS BLOCK 9 Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes RS 23320 COMMERCIAL NonOS MODEL OPTION COMMERCIAL MODEI For Comsumer model use 4PIN Wafer SECRET 3 S7LR2 2011 08 13 LGElectronics 232C_PHONE 10 7 Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes LVDS for large inch 51Pin LVDS Connector For FHD 60Hz FOR FHD REVERSE 10bit 30Pin LVDS Connector Change in S7LR For HD 60Hz Normal MIRROR Pol
3. 000 0000000000 0000000000 GP4L_S7LR2 2011 12 01 LGBlectronics PLASH EEPROM GPIO i 7 Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes gt VDDC 1 05V 22 2011 07 12 DATE et GHEET S7LR2 GPAL MODEL BLOCK LGElectronics LGE Internal Use Only Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes FROM LIPS amp POWER B D PANEL POWER 1 s 7 ERROR_OUT is used for lamp CCFL EEFL models In o
4. ITT 0000 FOR FHD REVERSE 8bit 000000 Change in S7LR MIRROR Pol 1 gt 0000 SECRET GPAL S7LR2 2011 11 14 LGElectronics LVDS_LARGE 11 Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes LGE2111A T8 S7LR2_DIVX_MS10 10100000000 00 00000 0 00904 004 00000000 00000000 Aa 00 00 000000 TTT T T T TAT TTT TTT TTE T TT TI GPAL S7LR2 DDR 256 2011 06 03 12 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Serial Flash for SPI SECRET GP4L_S7LR2 2011 06 03 T e LG ELELTRON 5 SFLASH 1MB 2 3 LGBlctronics Z Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Headphone WODptgqon HEAIX EHONE SECRET GPAL S7LR2 2011
5. Status Power off List Explanation Power off by REMOTE CONTROL l POWEROFF OFFTIMER Power off by OFF TIMER l POWEROFF SLEEPTIMER Power off by SLEEP TIMER l POWEROFF INSTOP Power off by INSTOP KEY l POWEROFF AUTOOFF Power off by AUTO OFF Normal l POWEROFF Power off by ON TIMER l POWEROFF RS232C Power off by RS232C l POWEROFF RESREC Power off by Reserved Record l POWEROFF RECEND Power off by End of Recording l POWEROFF SWDOWN Power off by S W Download l POWEROFF UNKNOWN Power off by unknown status except listed case Abnormal l POWEROFF ABNORMAL1 Power off by abnormal status except CPU trouble l POWEROFF CPUABNORMAL Power off by CPU Abnormal Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Established date LCD TV symptom No audio Normal video Revised date 9 14 Error C Audio error 2012 01 14 A15 A16 Check audio B 24V of Power Board Y N Check user menu Speaker off No audio Screen normal p Y voltag Cancel OFF Replace Power Board and repair parts fisconnecti n gt Replace MAIN Board Era disconnection T Y Replace Speaker Copyright O 2012 LG E
6. leone 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 If 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 After downloading have to adjust Tool Option again 1 Push IN START key in service remote control 2 Select Tool Option 1 and push OK key 3 Punch in the number Each model has their number LGE Internal Use Only 3 1 ADC Process 3 3 EDID data 1 ADC 1 FHD RGB EDID data RGB input only LD21B support Enter Service Mode by pushing ADJ key o 1 2 s 4 s e z e e A B c p E F Enter Internal ADC mode by pushing gt key at 7 ADC 00 00 00 1 60 b Calibration c o1 68 5 78 EE 91 54 4C 99 26 20 so 54 00 31 40 45 40 71 01 01 0t 01 02 3A 18 71 20 40 58 2C etl 40 45 00 A0 5 00 00 00
7. If R C operate Explain the customer cause is interference from light in room i Established ERE D Function error pem 2012 01 44 LCD TV symptom 1 Remote control amp Local switch checking Revised date 11 14 1 Remote control R C operating error Replace Main B D 17 1 A17 A A17 1 Check amp Repair X Check B ex nm Y Check itself Normal Y Cable connection Normal 3 5V Normal Check IR lt Norma Sl Operation operating Connector solder operating On Main B D Voltage ut signal Signal 4 N NL N N i lan AA i Check R C Operating Check amp Replace Close Check 3 5v on Power B D Repair Replace When turn off light Baterry of R C Replace Power B D or IR B D in room Replace Main B D Power B D don t have problem Rormar operating Replace R C Copyright 2012 LG Electronics Inc Only for training and service purposes All rights reserved LGE Internal Use Only Standard Repair Process LCD TV Check input signal Error D Function error Established date 2012 01 14 symptom External device recognition error Check technical information Fix information S W Version Check and fix external device cable Fix in accordance with technical information Revised date DVI Optical ecognition e
8. 2 When 3D OSD appear automatically then select OK key T2 Swee 18 Touch Senstiiy Sting After you finished all adjustments Press In start key 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 Push the IN STOP key after completing the function inspection And Mechanical Power Switch must be set ON 4 2 EYE Q function check 3 Don t wear a 3D Glasses Check the picture like below 1 Turn on TV 2 Press EYE key of Adjustment remote control 3 Cover the Eye Q sensor on the front of the using your hand and wait for 6 seconds 4 Confirm that R G B value is lower than 10 of the Raw Data Sensor data Back light If after 6 seconds R G B value is not lower than 10 replace Eye sensor 5 Remove your hand from the Eye Q sensor and wait for 6 seconds 6 Confirm that ok pop up If change is not seen replace 4 4 IR emitter inspection Eye Q II sensor 1 Start 3D pattern inspection ru ri 2 If IR emitter signal is correctly received to IR receiver the 3 Sensor Data lamp of IR tester turn on IR Tester EJ Enitter inspection 1 IR Tester Lampturned ofig IR Tester Lamp ened Copyright 2012 LG Electronics
9. Zoom part with exterior damage Exterior defect Replace module abinel dama Replace cabinet ontrolle Replace remote controller e Stan dent Replace stand Revised date 1414 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only
10. 2 Power adjustment Free Voltage 3 Magnetic Field Condition Nil 4 Input signal Unit Product Specification Standard 5 Reserve after operation Above 5 Minutes Heat Run Temperature at 25 5 Relative humidity 65 10 Input voltage 220 V 60 Hz 6 Adjustment equipments Color Analyzer CA 210 or CA 110 DDC Adjustment Jig Service remote control 7 Push the IN STOP key For memory initialization Case Software version up 1 After downloading S W by USB TV set will reboot automatically 2 Push In stop key 3 Push Power on key 4 Function inspection 5 After function inspection Push In stop key Case Function check at the assembly line 1 When TV set is entering on the assembly line Push In stop at first 2 Push Power on key for turning it on If you push Power on key TV set will recover channel information by itself 3 After function inspection Push In stop key 3 Main PCB check process APC After Manual Insert executing APC Boot file Download 1 Execute ISP program Mstar ISP Utility and then click Config tab Denes 4 Use use T Pu ahi Pre espss Time Ja T Reese Ho Please Check the To use speed between from 200KHz to 400KHz
11. 58 2 26 1HVOS 4 T 1 8 9 pene I 1 dis ER a009 aon osal LLolviva 51 34 p 5 sosvsoisoscs1 30 1deox3 LGE Internal Use Only 19 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes EXPLODED VIEW IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safely related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW IL is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X RADIATION Shock Fire other Hazards Do not modify the original design without permission of manufacturer 00 4 6 5 P 60 d z a I ELR dem 8 8 2 O gt se v B8 S Copyright 2012 LG Electronics Inc All rights reserved 20 LGE Internal Use Only Only for training and service purposes Config OUT BCK 125 OUT MCK PAD PWMIPAD LR2 DIVX Gao m
12. 3 EDID C S dat 3 Tool uia HDMI RGB 4 Tool Option 5 Block 0 43 5 5 Country Group respice Check sum 23 HDMI1 7 ADC Calibration Hex 1 13 HDMI2 8 White Balance 03 HDMI3 9 10 Pont d 10 Test Pate f Vendor Specific HDMI S SE BC Input Model name HEX 13 Touch Sensitivity Setting HDMI1 780300001000 lt Caution gt Never connect HDMI amp amp D sub cable when EDID HDMI2 780300002000 downloaded HDMI3 78030C003000 Copyright 2012 LG Electronics Inc All rights reserved 242 LGE Internal Use Only Only for training and service purposes 3 4 Function Check Check display and sound Check Input and Signal items 1 TV 2 AV SCART CVBS 3 COMPONENT 480i 4 RGB PC 1024 x 768 60hz RGB input LD21B only support 5 HDMI 6 PC Audio In except LD21A chassis model Display and Sound check is executed by Remote control lt Caution gt Not to push the INSTOP key after completion if the function inspection 4 Total Assembly line process 4 1 Adjustment Preparation W B Equipment condition CA210 CCFL EEFL gt CH9 Test signal Inner pattern 80IRE LED gt 14 Test signal Inner pattern 80IRE If it is executed W B adjustment 2 3 minutes H run it is adjusted by Target data Mode Temp Coordinate spec Target PIPER Apre m Medium 9 300k 283 60 00 220287 Gem TEES ERE HERE Edge LED W B Table in proce
13. 66 21 50 BO 51 00 18 30 urea 36 00 00 00 00 1 oo 00 00 2 Tool Option 60 1E 53 10 00 20 20 20 20 20 20 d 3 Tool 70 d vole 4 Tool Option 5 5 Country Group 6 Area Option 2 FHD HDMI EDID data AT8 C P E TF 8 White Balance oo 00 1 b 10 78 54 99 26 WE 20 oF 50 54 00 31 40 45 40 61 40 71 40 81 80 EDD 07 01 ot 02 80 18 71 38 40 58 2 12 90856 40 45 A0 00 00 00 t 66 21 so Bo 51 00 30 13 Touch Sensitivity Setting 50 40 70 36 00 A0 A 00 00 00 1E 00 00 3A Caution Using power on key of the Adjustment remote SE 1E 188 10 00 10 20120120120 control power on TV 02 33 F1 46 10 04 13 05 14 o2 12 20 21 90 22 15 01 26 15 07 50 09 57 07 f ADC Calibration Protocol RS232 80 20 0 0E 01 40 OA oF 18 10 58 NO item 1 CMD2 Data 0 10 38 10 01 t8 71 tc 16 20 2c 25 o0 20 Es Adjust x To o When venster ine Made ir
14. Minimize bodily motions when handling unpackaged replace ment 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 suf ficient to damage an ES device a o General Soldering Guidelines 1 Use a grounded tip low wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range or 500 F to 600 F Use an appropriate gauge of RMA resin core solder composed of 60 parts tin 40 parts lead Keep the soldering iron tip clean and well tinned Thoroughly clean the surfaces to be soldered Use a mall wire bristle 0 5 inch or 1 25 cm brush with a metal handle Do not use freon propelled spray on cleaners Use the following unsoldering technique a Allow the soldering iron tip to reach normal temperature 500 F to 600 F b Heat the component lead until the solder melts c Quickly draw the melted solder with an anti static suction type solder removal device or with solder braid CAUTION Work quickly to avoid overheating the circuit board printed foil Use the following soldering technique a Allow the soldering iron tip to reach a normal temperature 500 F to 600 F b First hold the soldering iron tip and solder the strand against the component lead until the solder melts Quickly move the soldering iron tip to the junction
15. 5 Click Auto tab and set as bel 6 Click Run use Fus Speed low message z Corin cometas can 7 After downloading check OK a se Jun eves Loan Are ese Santee File DAC in vie ReGonnect P Resi File p2Code SeurcsCocle Project E_S Blank i pee Roha sper Koy Checksum hot assa testor Data F Multi Flashes 9 Verity 22377 nun Elapsed Time USB DOWNLOAD Put the USB Stick to the USB 058 sees socket a 2 Automatically detecting update file in USB Stick If your downloaded program version in USB Stick is Low it didn t work But your downloaded version is High USB data is automatically detecting 3 Show the message Copying files from memory 4 Updating is starting 2 Set as below and then click Auto Detect and check OK message If Error is displayed check connection between computer jig and set 3 Click Read tab and then load download file XXXX bin by clicking Read penis T Elapsed Tine RE Copyright 2012 LG Electronics Inc All rights reserved 11 Only for training and service purposes 8 N Sota UPGRADING mmm 05 TV Sofrare Upgrade COMPLETED
16. B Power error Established 2012 01 14 LCD TV S SCC 4 No power Revised date 7 4 13 DC Power on 4 Y Replace gt pressing Power Key Normal 5 peces y On Remote control A pt n 19 Stand By Red N 4 Y N Check Power cord Replace Main B D was inserted properly 4 k A Measure voltage of each output of Power Y Y Y ormal Replace Main B D oltage Normal Check ST BY 3 5V velle F A12 Replace Power B D N Replace Power B D Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process LCD TV Error B Power error Established date 2012 01 14 symptom Off when on off while viewing power auto on off Check outlet A14 Check A C cord Check for all 3 phase Error power out and check each 3 Please refer to the all cases which can be displayed on power off mode Fix A C cord amp Outlet phase out Mode Check Power Off Revised date If Power Off mode is not displayed orma Y Check Power B D oltage Replace Main B D voltage N Check and fix exterior of Power B D Part Caution Replace Power B D Y Replace Main lt Replace 8 14 ower B D
17. Inc All rights reserved 14 LGE Internal Use Only Only for training and service purposes 4 5 Outgoing condition Configuration When pressing IN STOP key by SVC remocon Red LED are blinked alternatively And then automatically turn off Must not AC power OFF during blinking 5 HI POT Test 5 1 HI POT auto check preparation Check the POWER cable and SIGNAL cable insertion condition 5 2 HI POT auto check 1 Pallet moves in the station POWER CORD AV CORD is tightly inserted 2 Connect the AV JACK Tester 3 Controller GWS103 4 on 4 HI POT test Auto If Test is failed Buzzer operates If Test is passed GOOD Lamp on and move to next ess automatically 5 3 Checkpoint 1 Test voltage Touchable Metal 3KV min at 100mA SIGNAL 3KV min at 100mA 2 TEST time 1 second case mass production 3 TEST POINT Touchable Metal gt LIVE amp NEUTRAL Touchable Metal SIGNAL gt LIVE amp NEUTRAL SIGNAL 6 Model name amp Serial number D L Press Power on key of service remote control Baud rate 115200 bps Connect USB to RS232 Signal Cable to USB Jack Write Serial number Must check the serial number at the Diagnostics of SET UP menu Refer to below 6 1 Signal Table LENGTH ADH ADL ow 1 Datan cs DELAY CMD AOh LENGTH 85 94h 1 16 bytes ADH EEPROM Sub Address high 00 1 ADL E
18. c2 31 00 00 9E 01 1D 00 72 51 DO 20 6E 28 55 Adjust MODE In Carry the command Do 00 20 cz 00 oo te 02 71 20 40 58 Eo 2 45 00 A0 00 co 1D oo Bc 52 bo E PERANG Be neo The use ofa pater Fo 20 28 55 40 21 00 o0 1 00 00 oo o0 e Adjust Sequence 3 Detail EDID Options are below aa 00 00 Enter Adjust Mode a Product ID xb 00 40 Component1 Input 480i ad 00 10 Adjust 480i Comp MODEL NAME HEX EDID Table DDC Function xb 00 60 RGB Input 1024 768 only LD21B HD FHD Model 0001 0100 Analog Digital ad 00 10 Adjust 1024 768 RGB only LD21B aa 00 90 End Adjust mode b Serial No Controlled on production line Required equipment Adjustment remote control c Month Year Controlled on production line 1 gt 01 1 2012 gt 16 fix d Model Name Hex 3 2 EDID Download After enter Service Mode by pushing ADJ key Enter EDID D L menu cf TV set s model name in EDID data is below Enter START by pushing OK key Model name MODEL NAME HEX 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 LG TV EZ ADJUST 0 Tool Opliont e Checksum Changeable by total EDID data 1 Tool FHD 2 Tool
19. 10 04 LGElectronics Qc ELECTRONICS HEADPHONE 15 Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Option name of this page because of Hong Kong CI Region GPAL S7LR2 11 08 13 Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes ETHERNET H W option 9 A NT FOR PROTECTION FR N ARDS WHEN SER SECRET ssania ont nene eie pars s osen e EE BLG ELELTRONILS BLOCK SHEET Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes GPAR GLOBAL TUNER BLOCK TU T C TU T2 C TU2602 TU2603 TU2601 TDSS G101D TDSN G301D 6001 1 SECRET GP4L_S
20. 90 99 strength CAUTION This is a flammable mixture Unless specified otherwise in this service manual lubrication of contacts in not required Do not defeat any plug socket B voltage interlocks with which receivers covered by this service manual might be equipped Do not apply AC power to this instrument and or any of its electrical assemblies unless all solid state device heat sinks are correctly installed Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead Always remove the test receiver ground lead last Use with this receiver only the test fixtures specified in this service manual CAUTION Do not connect the test fixture ground strap to any heat sink in this receiver p gt bul o Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged eas ily 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 dam age caused by static by static electricity Immediately before handling any semiconductor component or semiconductor equipped assembly drain off any electrostatic charge on your body by touching a known earth ground
21. Alter natively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent poten tial shock reasons prior to applying power to the unit under test Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes P 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 expo sure of the assembly Use only 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 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ES devices Do not remove a replacement ES device from its protective package until immediately before you are ready to install it Most replacement ES devices are packaged with leads electri cally shorted together by conductive foam aluminum foil or comparable conductive material Immediately before removing the protective material from the leads of a replacement ES device touch the protective material to the chassis or circuit assembly into which the device will be installed CAUTION Be sure no power is applied to the chassis or circuit and observe all other safety precautions
22. Download check the OK 3 Start Cl Key Download Push the 4 Check the OK or NG 7 3 2 LAN PORT inspection PING TEST 1 Play the LAN Port Test Program 2 Connect each other LAN Port Jack 3 Play Test F9 button and confirm OK Message 4 Remove LAN cable x PingTest 1 Country Group Pr County Group cose H Country Group 8 Model Number D L Country 7 Tent Option 2 Area Option 3 Bde ADC Tool Option Spread Spectum Opont Teal Optonz LE Sable Count Opens 2 00C Tet Tool ion Tool Options 4 Adjust White Balance 5 Adjust ADC 180 Component Jp Component EF Copyright O 2012 LG Electronics Inc All rights reserved 16 LGE Internal Use Only Only for training and service purposes BLOCK DIAGRAM 42LM3450 Applied Model 3M808 V1S Moles Oie 0V1vd SL L olviva 51 34 46 7 2 7 Lrolviva Wd 48 E piel Wod yng i 22217 Wod 3191952 0101 d 19SNIWHH LOWPZW on gea 1 Pv avs oda VILLZO1 NHIGDY 1 89 4 105 sano 108 Dosa T ino 8 99000 d ad A SAAD oe J09M ais pen aio aon p 09 52 005651 Jo LGE Intern
23. as close as possible to the component body Bend into a U shape the end of each of three leads remaining on the circuit board Bend into a U shape the replacement transistor leads Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the U with long nose pliers to insure metal to metal contact then solder each connection Power Output Transistor Device Removal Replacement 1 Heat and remove all solder from around the transistor leads 2 Remove the heat sink mounting screw if so equipped 3 Carefully remove the transistor from the heat sink of the circuit board 4 Insert new transistor in the circuit board 5 Solder each transistor lead and clip off excess lead 6 Replace heat sink Diode Removal Replacement 1 Remove defective diode by clipping its leads as close as pos sible to diode body Bend the two remaining leads perpendicular y to the circuit board Observing diode polarity wrap each lead of the new diode around the corresponding lead on the circuit board Securely crimp each connection and solder it 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 o Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2
24. covered by this service manual and its supplements and addenda read and follow the SAFETY PRECAUTIONS on page 3 of this publication NOTE If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication always follow the safety precautions Remember Safety First General Servicing Precautions Always unplug the receiver AC power cord from the AC power source before a Removing or reinstalling any component circuit board mod ule 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 explo sion hazard 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 Do not spray chemicals on or near this receiver or any of its assemblies Unless specified otherwise in this service manual clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner cotton tipped stick or comparable non abrasive applicator 10 by volume Acetone and 90 by volume isopropyl alcohol
25. scart and support RF OUT analog 5 Video Input SECAM NTSC 4 System PAL SECAM NTSC PAL6O 6 Component Input 1EA veer Analog D SUB 15PIN 7 RGB Input Some are not supported HDMI1 DTV DVI PC HDMI version 1 3 HDMI Input 3EA HDMI2 DTV Support HDCP HDMI3 DTV The number of Input ports is different by model In case of the RGB DVI Audio input 9 Audio Input 2EA cons Some models LD21A LD21C are not supported Component amp AV s audio input is used by common port 10 SDPIF out 1EA SPDIF out Some models LD21A LD21C are not supported 11 Earphone out 1EA RGB some models LD21A LD21C are not supported EMF JPEG MP3 DivX HD 12 USB 1EA or 2EA DivX HD LM58 CM96 2EA For SVC download LS56 LS35 CS46 15 34 LM34 1EA CI UK Finland Denmark Norway Sweden Russia DVB T Spain Ireland Luxemburg Belgium Netherland France Canal Italy DGTVi 13 DVB Switzerland Austria Slovenia Hungary Bulgaria DVB C Switzerland UPC Cablecom Netherland Ziggo Germany KDG CWB Finland labwise DVB S Germany Astra HD 14 Ethernet DLNA Wired DMP only Some models LD21A LD21C are not supported Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only 5 Video resolutions 2D 5 1 Component Input Y
26. 0 67 50 60 00 148 50 HDTV 1080P 12 19201080 67 432 59 94 148 352 HDTV 1080P 13 1920 1080 27 00 24 00 74 25 HDTV 1080P 14 1920 1080 26 97 23 976 74476 HDTV 1080P 15 19201080 33 75 30 00 74 25 HDTV 1080P Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only 6 Video resolutions 3D 6 1 HDMI Input No Resolution H freq kHz Vreq Hz Pixel clock MHz Proposed 3D input proposed mode 1 19201080 5395 54 2398 24 148 35 148 5 HDTV 1080P Frame packing 2 1280720 89 9 90 59 94 60 148 35 148 5 HDTV720P Frame packing 1280720 75 50 148 5 HDTV720P Frame packing 1920 1080 675 60 148 5 HDTV 1080 Side by Side half Top and bottom 5 19201080 563 50 148 5 HDTV 1080 Side by Side half Top and bottom 6 1280 720 45 60 74 25 HDTV720P Side by Side half Top and Bottom 7 1280720 375 50 74 25 HDTV720P Side by Side half Top Bottom 8 19201080 337 60 74 25 HDTV 1080 Side by Side half Top and Bottom 9 19201080 28 125 50 74 25 HDTV 1080 Side by Side half Top and Bottom 10 19201080 27 24 74 25 HDTV 1080 Side by Side half and Bottom 11 19209080 337 30 89 1 HDTV 1080P Side by Side half Top and Bottom 6 2 RF 3D Input DTV No Resolution H freq kHz V freq Hz Pix
27. 468 70 09 25 17 EGA x 2 720 400 31 469 70 08 28 32 DOS o 3 640 480 31 469 59 94 25 17 VESA VGA 4 800 600 37 879 60 31 40 00 VESA SVGA o 5 1024 768 48 363 60 00 65 00 VESA XGA 6 1152 864 54 348 60 053 80 00 VESA 1360 768 47 712 60 015 85 50 VESA WXGA 8 19201080 67 5 60 148 5 HDTV 1080P o Copyright 2012 LG Electronics Inc All rights reserved 8 LGE Internal Use Only Only for training and service purposes 5 4 HDMI Input PC DTV No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remark PC DVI DDC 1 640 350 31 468 70 09 2547 EGA x 2 720 400 31 469 70 08 28 32 DOS o 3 640480 31 469 59 94 25 17 VESA VGA o 4 800 600 37 879 60 31 40 00 VESA SVGA o 5 1024 768 48 363 60 00 65 00 VESA XGA 6 1152 864 54 348 60 053 80 00 VESA o 7 1360 768 47 712 60 015 85 50 VESA WXGA 8 12801024 63 981 60 020 108 0 VESA 5 o FHD only 9 1920 1080 67 50 60 00 148 5 HDTV 1080P FHD only 1 720 480 3147 59 94 27 00 SDTV 480P 2 720 480 31 50 60 00 27 027 SDTV 480P 3 720 576 31 250 50 00 27 00 SDTV 576 4 1280720 37 50 50 00 74 25 HDTV 720P 5 1280720 45 00 60 00 74 25 HDTV 720P 6 1280 720 44 96 59 94 74 176 HDTV 720P 7 1920 1080 28 125 50 00 74 25 HDTV 10801 8 19201080 33 75 60 00 74 25 HDTV 10801 9 1920 1080 33 72 59 94 74476 HDTV 10801 10 19201080 56 250 50 00 148 50 HDTV 1080P 1920108
28. 7LR2 2011 12 23 i e LG ELECTRONICS TUNER EU 26 LGBlctronics Z Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes DVB S2 LNB Part Option LNB DCDC_GND and A Y ND are connected in pin 27 ea e d mt Pet trace widths should be sized to conduct at least 3A 9995 trace widths should be sized to conduct at least 2A T ock WEEN SERVICING IF IS O SECRET i CRITICAL EE Bae ere A OF INE LGElectronics ELELTRONILS BLOCK GHEET Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes SCART COMPONENT amp COMPSIT COMPONENT2 im FULL SCART COMPONENTI T 1 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes ELECTRONICS GPAL S7LR2 REAR JACK EU 2012 01 06 28 7 LGE Internal U
29. EPROM Sub Address low 00 FF Data Write data CS CMD LENGTH ADH ADL Data_1 Data Delay 20ms Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 15 6 2 Comand Set Adjust mode CMD hex EEPROM WRITE A0h LENGTH hex 4 Des cription n bytes Write n 1 16 Description FOS Default write lt 7mode data write Vtotal V_Frequency Sync_Polarity Htotal Hstart Vstart 0 Phase Data write Model Name and Serial Number write in EEPROM 6 3 Method amp notice 1 Serial number D L is using of scan equipment 2 Setting of scan equipment operated by Manufacturing Technology Group 3 Serial number D L must be conformed when it is produced in production line because serial number D L is mandatory by D book 4 0 Manual Download Model Name and Serial Number If the TV set is downloaded by or Service man sometimes model name or serial number is initialized Not always There is impossible to download by bar code scan so It need Manual download 1 Press the Instart key of Adjustment remote control 2 Go to the menu 6 Model Number D L like below photo 3 Input the Factory model name or Serial number like photo akin TTD 4 Check the model name Instart menu Factory name displayed ex 32LV3400 ZG 5 Check the Diagnostics DTV country only Buyer model display
30. North Latin America http aic lgservice com Europe Africa http eic lgservice com gt Asia Oceania http biz Igservice com Life s Good LED LCD TV CHASSIS LD21B MODEL 42LM3450 345S 345T 42LM3450 345S 345T ZA CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL P NO MFL67360737 1209 REVO00 Printed in Korea CONTENTS jn 2 SAFETY PRECAUTIONS 2 3 SERVICING PRECAUTIONS 4 SPECIFICATION reta tate tasa tasa 6 ADJUSTMENT INSTRUCTION BLOCK DIAGRAM aissa aa 17 EXPLODED VIEW 2 20 SCHEMATIC CIRCUIT DIAGRAM 2 0 0 4840400 00 Copyright 2012 LG Electronics Inc All rights reserved 2 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 se
31. Securely crimp the leads of replacement component around notch at stake top Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes p Solder the connections CAUTION Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures 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 connec tions 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 a
32. Slovakia Bosnia Serbia Albania Belarus Supported satellite 22 satellites HISPASAT 1C 1D ATLANTIC BIRD 2 NILESAT 101 102 ATLANTIC BIRD 3 AMOS 2 3 THOR 5 6 IRIUS 4 EUTELSAT W3A EUROBIRD 9A EUTELSAT W2A HOTBIRD 6 8 9 EUTELSAT SESAT ASTRA 1L H M KR ASTRA 3A 3B BADR 4 6 ASTRA 2D EUROBIRD 3 EUTELSAT W7 HELLASSAT 2 EXPRESS 1 TURK SAT 2A 3A INTERSAT10 Copyright O 2012 LG Electronics Inc All rights reserved 6 LGE Internal Use Only Only for training and service purposes No Specification Remarks 1 PAL BG 2 PAL DK 2 Broadcasting system 3 PAL I I 4 SECAM LIL 5 DVB T T2 C S gt DVB T Guard Interval Bitrate Mbit s 1 4 1 8 1 16 1 32 Modulation Code Rate QPSK 1 2 2 3 3 4 5 6 7 8 16 QAM 1 2 2 3 3 4 5 6 7 8 64 QAM 1 2 2 3 3 4 5 6 7 8 gt DVB T2 Guard Interval Bitrate_Mbit s 4 4 1 8 1 16 1 32 1 128 19 128 19 256 Modulation Code Rate 3 Receiving system Digital COFDM QAM SB 256 QAM 1 2 2 5 2 3 3 4 5 6 gt DVB C Symbolrate 4 0Msymbols s to 7 2Msymbols s Modulation 146QAM 64 QAM 128 QAM and 256 QAM gt DVB S S2 symbolrate DVB S2 8PSK QPSK 2 45Msymbol s DVB S QPSK 2 45Msymbol s viterbi DVB S mode 1 2 2 3 3 4 5 6 7 8 DVB S2 mode 1 2 2 3 3 4 3 5 4 5 5 6 8 9 9 10 4 Scart Jack PAL SECAM Scart 1 Jack is Full
33. al Use Only meram Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes 42LM345T Applied Model 08 15 AdS LADJ ka e ore vasrios MOSN3S 0v1vd 51 ovava Si 34 _ L olviva Wod aaa nog Wod 5 5 VOLI lonwa ronyn os gea PPv 198 ais oda EE SAO 195 Lr 9 Javos 100A 33 IAA SSAO san 99000 nuauodwog 109752 105 lt 51 30 0 2 9 Je9HM u97 dis NL NSGL L olvivd 61 34 o LGE Internal Use Only 18 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 42LM345S Applied Model 3M808 V1S 1289 opny LAM vasrios MOSN3S 51 jam M Lrolvivd si 34 M L L olviva reves 5 rely Wod 1eyng a lt S 207 ol 3147952 VOIN p ppy Ids zHos aH4 avs od3 10121 45 yuya 1 31045 ui Ipny
34. ed ex 32LV3400 ZG LGE Internal Use Only 7 MAC Address amp Cl key download 7 2 LAN Inspection 7 2 1 Equipment amp Condition 14 CERE andion Each other connection to LAN Port of IP Hub and Jig Play file Serial exe 1 192 168 123 254 MAC Address edit Input Start End MAC address 7 1 2 Download method 1 Communication Prot connection Am gt 4 ae f 7 2 2 LAN inspection solution PCBA USD Port USBloSeralAdoer RS 232C Cabe 8 232 Por LAN Port connection with PCB Network setting at MENU Mode of TV Connection PCBA USB Port USB to Serial Adapter 51 UG 232A RS2520 cable POS If automatic setting is finished you confirm IP and MAC Caution LJ21 chassis support only UC 232A driver only Address use this one IG Re IP 2 MAC Address amp Cl Key Download CEU SS Set Cl Key path Directory at Start Mac amp Cl Download Programme Com 1 2 3 4 and 115200 Baudrate 08 PEE ee j sese 7 3 LAN PORT INSPECTION PING TEST som GP4_LOW Connect SET gt LAN port PC gt one SSS p SET PC ex 7 3 1 Equipment setting 1 Play the LAN Port Test PROGRAM _ 2 Input IP set up for an inspection to Test Program IP Number 12 12 2 2 Port connection button click 1 Push the 2 MAC Address write At success
35. el clock MHz Proposed 3D input proposed mode 1 12807720 37 500 50 74 25 HDTV720P Side by Side amp Bottom 2 1920 1080 28125 50 74 25 HDTV 1080 Side by Side amp Bottom 6 3 USB Input No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed 3D input proposed mode 1 19201080 33275 30 000 7425 HDTV 1080P MPO Top amp Bottom support 6 4 RGB PC Input No Resolution H freq kHz V freq Hz Pixel 2 Proposed 3D input proposed mode 1 19201080 66 587 59 93 148 50 HDTV 1080 Side by Side amp Bottom 6 5 DLNA Input No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed 3D input proposed mode 1 19201080 3375 30 74 25 HDTV 1080p Side by Side amp Bottom 6 6 3D Input mode No Side by Side Top amp Bottom Single Frame Sequential Frame Packing Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 10 LGE Internal Use Only ADJUSTMENT INSTRUCTION 4 Click Connect tab If Can t is displayed check connection between computer jig and set 1 Application Range This specification sheet is applied to all of the LCD TV with LD21B 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
36. eo Normal LED driver B 24V measuring method audio Check White Balance value 4 Power Board voltage measuring method 6 A Video error_ No video Video TUNER input signal strength checking method 7 lag stop LCD TV Version checking method A6 9 LCD TV connection diagram 7 10 A Video error Color error ee a Cable LVDS reconnection i 11 Adjustment Test pattern ADJ Key A10 12 LCD TV connection diagram A8 13 A Video error Vertical Horizontal bar Check Link Cable LVDS reconnection A8 residual image light spot condition A9 14 Adjustment Test pattern ADJ Key A10 15 Exchange T Con Board 1 A 1 5 16 Exchange T Con Board 2 A 2 5 17 Pase caused by T Con Exchange LED driver Board PSU A 3 5 D UAR Inverter Module 18 Exchange Module itself 1 A 4 5 19 Exchange Module itself 2 A 5 5 Continue to the next page Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process symptom A1 Check Back Light On with naked eye No video Normal audio video No audio Precaution is A6 amp Always check amp record S W Version and White Balance value before replacing the Main Board Move to No 2 Check Power Board 24v output y dom Y Replace Inverter or module oltage N Repair Power Board or parts gt 4 Check Powe
37. er Voltage Standard input voltage AC 100 240 V 50 60 Hz Standard Voltage of each products is marked by models 4 Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM 5 The receiver must be operated for about 5 minutes prior to the adjustment 4 Model General Specification No Item Specification Remarks 1 Market EU PAL Market 37 Countries DTV amp Analog Total 37 countries DTV MPEG2 4 DVB T 37 countries Ukiltaly Germany France Spain Sweden Finland Nether lands Belgium Luxemburg Greece Denmark Czech Austria Hungary Swiss Croatia Turkey Norway Slovenia Poland Ukraine Portugal Ireland Morocco Latvia Estonia Lithania Rumania Bulgaria Russia Slovakia Bosnia Serbia Albania Kazakhstan Belarus DTV MPEG2 4 DVB T2 8 countries UK Denmark Sweden Finland Norway Ireland Ukraine Kazakhstan DTV MPEG2 4 DVB C 37 countries Uk ltaly Germany France Spain Sweden Finland Netherlands Belgium Luxemburg Greece Denmark Czech Austria Hungary Swiss Croatia Turkey Norway Slovenia Poland Ukraine Portugal Ireland Morocco Latvia Estonia Lithania Rumania Bulgaria Russia SlovakiaBosnia Serbial Albania Kazakhstan Belarus DTV MPEG2 4 DVB S 29 countries Italy GermanylFrance Spain Netherlands Belgium Luxemburg Greece Czech Austria Hungary Swiss Croatia Turkey Slovenia Poland Portugal Morocco Latvia Estonia Lithuania Rumania Bulgaria Russia
38. esidual image light spot tar A8 AQ Replace Request repair module for external device Check Test pattern External device screen error Color error Check and External Input device Y 2 Component connection Normal gt gt pace Link quee condition Replace Module 4 M normal Replace Main B D h Connect other external device and cable Check normal operation of External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc MON creer Replace jormal Main B D Y Check screen condition by input Eri Check S W Version T External Input gt lt Input Component error RGB HDMI DVI mponent S W Upgrade RGB Formal screen HDMI lt Connect other external device and cable Check normal operation of External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc Request repair for external device oe fv Screen N Replace Main B D Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process
39. h 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 O 2012 LG Electronics Inc All rights 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 5 K 10 watt resistor in parallel with a 0 15 uF 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 5 mA 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 lt gt Good Earth Ground such as WATER PIPE CONDUIT etc To Instrument s exposed METALLIC PARTS 0 15 1 5 Kohm 10W When 25 is impressed between Earth and 2nd Ground for 1 second Resistance must be less than 0 1 Base on Adjustment standard LGE Internal Use Only SERVICING PRECAUTIONS CAUTION Before servicing receivers
40. lectronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process LCD TV Check input signal RF Error symptom C Audio error Established date 2012 01 14 Wrecked audio discontinuation noise Wises audio Soo uate Noise for A External Input signal gm N When RF signal is not received Request repair to external cable ANT provider lt lt Wretked audio scontinuatioiv Noise only 7 Nar D TV 2 Wrecked udio scontinuationv f gt lt S Noise only Replace Power B D Tor Analog WreCked a dio In case of External Input signal error Check and fix external device Discontinuation Noise only gt lt P for External put Connect and check Revised date abnormal audio discontinuation noise is same after Check input signal compared to No audio A16 connector Check and replace speaker and Check audio B Voltage 24V Replace Main B D other external device 10 14 Replace Main B D audio Y Check and fix external device Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process
41. ny 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 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 con nected to the affected copper pattern 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 LD21B 1 Performance LGE TV test method followed chassis 2 Demanded other specification Safety CE IEC specification 2 Requirement for Test Each part is tested as below without special appointment 1 Temperature 25 C 5 C 77 F 9 F CST 40 C 5 C 2 Relative Humidity 65 10 3 Pow
42. o suspension of power supply and heat run over 5 minutes Using signal or POWER or the others check the back light on Auto adjustment Map using RS 232C to USB cable RS 232C COMMAND CMD 10 DATA Wb 00 00 White Balance Start Wb 00 ff White Balance End RS 232C COMMAND CENTER CMD ID DATA MIN DEFAULT MAX Coo Mid Warm Cool Mid Warm R Gain jg Ja jd 00 172 192 192 192 G Gain jh Jb fie 00 172 192 192 192 Gain Jc 00 192 192 172 192 RCut 64 64 64 128 GCut 64 64 64 128 B Cut 64 64 64 128 lt gt Color Temperature COOL Medium Warm One of R Gain G Gain B Gain should be kept on and adjust other two lower than CO When R G B Gain are all itis the FULL Dynamic Range of Module 13 LGE Internal Use Only Manual W B process using adjust Remote control 4 3 3D function test After enter Service Mode by pushing ADJ key Pattern Generator MSHG 600 MSPG 6100 Support HDMI1 4 Enter White Balance by pushing gt key at 8 White HDMI mode NO 872 pattern No 83 Balance 1 Please input 3D test pattern like below HDMI mode No EZADJUST White Balance 872 pattern No 83 Tl ote otn 2 Tool Option3 G Gain 172 3 Tool Options B Gain 192 4 Tool Option 5 Country Group Sou amp Ama Cn 7 ADC Calibration Test Pattem K Benin t0 Pom we
43. of the component lead and the printed circuit foil and hold it there only until the solder flows onto and around both the compo nent lead and the foil CAUTION Work quickly to avoid overheating the circuit board printed foil Closely inspect the solder area and remove any excess or splashed solder with a small wire bristle brush a m o a 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 cir cuit 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 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 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 Itis not necessary to reapply acrylic coating to the areas Small Signal Discrete Transistor Removal Replacement 1 Remove the defective transistor by clipping its leads
44. ox Different maker TV Check RF Cable i zr Connection Normal Y Check Picture lt S W Version 2 Install Booster 1 Reconnection V Check Tuner soldering Contact with signal distributor or broadcaster Cable or Air Replace Main B D Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error Video error Established date LCD TV symptom gt AS Check RF Signal level Contact with signal distributor or broadcaster Cable or Air t lose e Check satellite setting Tuning fail Picture broken Freezing N Normal Normal _Y S Signal S setting Slgnal2 Check Satellite connection N DiSEqC motor etc N Revised date Check RF signal cable DVB satellite signal or not Check whether other equipments have problem or not By connecting RF Cable at other equipment Set Top Box Different maker TV etc Check S W Version Change satellite setting match with installed ANT y S W Upgrade Picture M A Si cos lo 2012 01 14 414 Check Replace Main B D x Copyright 2012 LG Electronics Inc All rights
45. r Board 12v 3 5v etc No video Normal audio Revised date First of all Check whether all of cables between board is inserted properly or not Main B De Power B D LVDS Cable Speaker Cable IR B D Cable Repair Power Board or parts Replace Main Board gt Re enter White Balance value Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Established Error A Video error date 2012 01 LCD TV symptom No video No audio Revised date 2 14 ar A4 Check various a Y Check and No Video voltages of Power Norma replace No audio Board 3 5V 12V 20V oltage MAIN B D or 24V Replace Power Board and repair parts Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Established LCD TV Error Video error ER 2012 01 14 symptom Picture broken Freezing Revised date 314 or A5 7 By using Digital signal level meter By using Diagnostics menu on OSD 4 Menu Set up Support Signal Test Signal strength Normal over 50 Signal Quality Normal over 50 Check whether other equipments have problem or not By connecting RF Cable at other equipment DVD Player Set Top B
46. reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Error A Video error date Established 2012 01 14 LCD TV symptom AT Color error A8 AQ X Check Revised date X error gt gt Replace module SZ Check color by input and replace External Input g color Link Cable Replace Main B D Color RGB error ed error contac BEEN N condition N N v Check error color input mode 1 N NS d Ext rnal Input cnet i External device y Check Test pattern componen gt A Cable error device and N b N equest for external device cable N RGB N Check external Ext enal device y L_ lt HDMI DVI 7 device and I lt Cable error cable normal 5 14 Y Replace Main B D Replace Main B D Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process LCD TV Error symptom A Video error 2012 01 14 Vertical Horizontal bar residual image light spot external device color error Revised date 6 14 SA7 Check color condition by input Check external HDMI DVI Vertical Horizontal bar r
47. rror Replace Main B D Replace Main B D 1214 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process LCD TV Identity nose type E Noise Error Established date 2012 01 14 symptom Circuit noise mechanical noise Revised date Replace PSU with LED driver Check location of noise Replace LED driver Check location of noise 3 Mechanical noise is a natural phenomenon and apply the 1st level OR description When the customer does not agree apply the process by stage Describe the basis of the description in Part related to nose in the Owner s Manual When the nose is severe replace the module For models with fix information upgrade the S W or provide the description If there is a Tak Tak noise from the cabinet refer to the KMS fix information and then proceed as shown in the solution manual For models without any fix information provide the description 13 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process LCD TV Error F Exterior defect Established date 2012 01 14 symptom
48. rvicing 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 1 W keep the resistor 10 mm 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 1 and 5 2 MQ When the exposed metal has no return pat
49. se Only AUDIO STA380BWE SECRET GP4L_S7LR2 2011 11 16 LGElectronics ELECTRONICS AMP_STA380BWE 34 Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Life s Good Contents of LCD TV Standard Repair Process Error symptom High category Error symptom Mid category Remarks Video error No video Normal audio No video No audio Tuning fail Picture broken Freezing Color error Vertical Horizontal bar residual image light spot external device color error Power error No power Off when on off while viewing power auto on off Audio error Function error No audio Normal video Wrecked audio discontinuation noise Remote control amp Local switch checking External device recognition error Noise Circuit noise mechanical noise Exterior error Exterior defect First of all Check whether there is SVC Bulletin in GCSC System for these model Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Contents of LCD TV Standard Repair Process Detail Technical Manual Error symptom Content Remarks Check LCD back light with naked eye 2 A Video error_ No vid
50. ss of time LGD module amp 65 AUO module Aging Cool Medium Warm time x y x y x y Min 269 273 285 293 313 329 1 02 280 287 296 307 320 337 2 3 5 279 285 295 305 319 335 3 6 9 277 284 293 304 317 334 4 10 19 276 283 292 303 316 333 5 20 35 274 280 290 300 314 330 6 3649 272 277 288 297 312 327 7 5079 271 275 287 29 311 325 80 19 270 274 286 294 310 324 9 120 269 273 285 293 309 323 Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes Connecting picture of the measuring instrument On Automatic control Inside PATTERN is used when W B is controlled Connect to auto controller or push Adjustment R C POWER ON Enter the mode of White Balance the pattern will come out Full White Pattern 3 S COLOR ANALYZER TYPE 210 RS 232C Communication Auto control interface and directions 1 Adjust in the place where the influx of light like floodlight around is blocked illumination is less than 10 lux 2 Adhere closely the Color analyzer CA210 to the module less than 10 cm distance keep it with the surface of the Module and Color analyzer s prove vertically 80 100 3 Aging time After aging start keep the power on n
51. ther words LED models need not use Vout 0 8 1 R1 R2 1 5319 2 5V 4 1 8V S7LR core tos Vout 0 827 1 R1 R2 1 225V SECRET GP4L_S7LR2 2011 11 26 ELECTRONICS MODEL DATE 2911711726 POWER_LARGE 4 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only TRY LED and control normal models SECRET GP4L_S7LR2 2011 11 16 T e LG ELECTRON 5 IR CONTROL 6 LGElectronics Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes USB SIDE 05 1 DIODES USB2 DIODES pm E SECRET GP4_S7LR2 10 08 13 T ELECTRON 5 USB_OCP_DIODE LGElectronics Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes 10 04 LGE Internal Use Only 2011 8 DATE SHEET S7LR2 GPAL MODEL BLOCK
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