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Life is good 55LM6200 Flat Panel Television User Manual

1. Sensor Option LG ELECTRON Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes 5 E di E e LGElectronics LGE Internal Use Only Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes RGB PC AUDIO SPDIF PC AUDIO MODEL DATE TGBsctoke LG ELECTRONICS BLOLK SHEET Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes 3 Lr ESD for MTK ESD for LG1152 MODEL DATE TEBschorks LG ELECTRONICS BLOLK SHEET Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes RS232C CVBS 1 PHON
2. LCD TV symptom A Video error No video Audio ats 2010 12 14 Content Power Board voltage measuring method E A5 Edge LED Power on 24V 24V 24V GND GNO GND GNO 3 5V 3 5V 3 5V 3 5V GND GNO GND GNO 12V Inverter On off 12V Lamp A Dim LED N C 12V PWM Dim 1 GND P_DIM2 Error out Lamp SCANNING Model PWM Dim 2 Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Detail Technical Manual Error z 1 Established LCD TV symptom A Video error Video error video lag stop date Content TUNER input signal strength checking method E A6 2010 12 14 ALL MODELS Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Detail Technical Manual Error a P LCD TV symptom Video error Video error video lag stop Established date 2010 12 14 Content LCD TV Version checking method Adjust Check ADC Data Power Off Status 4 System E y Version 7 Model Number D L t 8 Test Option 9 Spread Spectrum 10 Sync Level 11 Stable Count 12 SDP Server Selection 13 Network Error History 14 RF Remocon Test 15 Access Code Press the IN START with the remote controller for adjustment Revised date 1 Checking method for remote contr
3. i E lish En A Video error stablished 2010 12 14 LCD TV a8 symptom Vertical Horizontal bar residual image Revised date 5 13 light spot external device color error Vertical Horizontal bar residual image light spot TENES Module A8 A10 A11 m heck color condition by input N Check external 05 F a External Input Screen device 4 DRA Melius creen N Screen Component ormal connection Normal replace Link lt ormal Zo ormal gt AGB me ve Gondiion xp Cable Ce va adjust VCOM normaly HDMI DVI N For LGD panel Y nen Request repair Ena Replace Main B D A12 module for external device Check Test pattern daa External device screen error Color error Check screen AN eondition by input A AN External Input Extern Check S W Version bourn Component lt Input gt Connect other external ANON NP RGB error device and cable p Screen Replace S HDMI DVI X Check normal operation of normal Main B D Y External Input Component N gt g mpon nt RGB and HDMI DVI by y error connecting Ji ttern S W Upgrade Neo ctas v d Generator Set top Box etc Request repair for external device pata y RGB Y error Connect other external orma N N NZ device and cable d m N screen L Check normal operation of Screen Replace A N External Input Component ormal
4. WIN HeH arsro ssar 8 V UITOULNOI uaa poueg 9 L YINNL YOSIIS 9LLZIS ala LGE Internal Use Only 16 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 safety related characteristics These parts are identified by A 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 or other Hazards Do not modify the original design without permission of manufacturer Stand Base Body a T Set Stand Copyright 2012 LG Electronics Inc All rights reserved 17 LGE Internal Use Only Only for training and service purposes EAX6430790 LD22 LC22 EAX6443420 LT22 LJ22 LA22 LB22 MID MAIN 1 LG ELECTRON Copyright 2012 LG Electronics
5. gt L 2 SS 2 Signal Check Satellite connection getting Tuner soldering Main B D D N DiSEqC motor etc S W n y x Contact with Change satellite setting A N signal distributor match with installed ANT rh Normal or broadcaster SS Picture z Cable or Air VLA lv AX EN ciose Close NM Ney Copyright 2012 LG Electronics Inc Alll rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Esta A8 car A10 A11 7 X Check and Y Oreck golon by input Wa replace Link N JE S ped Input Colors Y MESE Color epee S error LVDS and Replace Main B D error 2 Replace module HDMI DVI contact M NM s N condition N v Check error ee color input mode A12 Check Ext rnal Input eend Ext rnal device y Check Test pattern Component gt 2 A MK iCable Replace Main B D error device and normal i cable b 3 SU 2 fequest repail for extemal for ENG z RGB NX Check external External device Y ERO HDMI DVI gt gt device and m lt Cable Replace Main B D N error cable 7 2d Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process
6. 3 Power 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 20 minutes prior to the adjustment 4 Model General Specification 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC Wireless Wireless HD Specification Option or For SVC No Item Specification Remarks Australia New Zealand AU Singapore SG Indonesia ID de lais Asia Oceania Africa Middle East Malaysia MY Vietnam VN i MAIER PAL DVB Market South Africa ZA Iran IR Considering for Israel IL only Analog for A ASIA 1 PAL SECAM BIGIDIK PAL for NZ SG 2 PAL I I 2 Broadcasting system 3 Tso ny 4 DVB T 3 Channel Storage ATV 135EA DTV 1000EA gt DVB T Guard Interval Bitrate Mbit s Uprier Hatemdns 1 4 118 1 16 1 32 4 Receiving system nog Modulation Code Rate EM Digital COFDM DVB T 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 4 System 5 Video Input RCA PAL SECAM NTSC PAL SECAMUNTSC PALGD 6 Component Input YICbICr YIPbIPr 7 RGB Input RGB PC Analog D SUB 15PIN PE HDMI1 DTV DVI HDMI2 DT
7. DATE GHEET Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only FROM LIPS amp POWER B D P DET Pw 5V_Normal DEV_DCDC_TPS54327 DDR MAIN 1 5V pm i Iw SECRET LG ELECTRONICS Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Renesas MICOM For Debug K CLK XT2 EXC P122 X2 EXQ P123 XTl P41 T107 1007 P124 GP4 High MID Power SEQUENCE 42 P60 POWER_ON OFF P61 SDAAO P P63 IC3000 P31 T103 1003 INTP4 m P75 KR5 INTP9 SCKO1 SC 6 RSF100GEAFB P74 KR4 INTP8 SIO1 4 P73 KR3 E MICOM P72 KR2 71 KR1 8121 P70 KRO SC P30 INTP3 RTC1HZ MICOM MODEL OPTION S011 MICOM MODEL OPTION P147 ANII18 P51 INTP2 INTP1 SI11 SDA1l P16 TI01 TOC P5
8. l l l I l I J Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Ethernet Block ESD for LG1152 n i SECRET LG ELECTRONICS Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes OUTIB 2 OUTIB 1 THERMAL 49 PGND1B 1B IC5400 NTP 7500L AGND VDR2 SDATA 9 Seite us k PGND2A LG ELECTRON Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes EARPHONI SCHEMETIC DIAGR FOR PROTECTION FROM X RA N S WHEN ING IF IS SECRET THE Pe QS IN N SYMB l az scenic LGElectronics CUNG ELECTRONILG BLOCK ei CHEET 7 Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes T C S amp H NIM e T2 C TUNER EU amp CHINA ERROR amp TU6
9. Inc All rights reserved LGE Internal Use Only Only for training and service purposes DATE SHEET 0 1 fa v ps aa qd ded Pa ee en d e OR OL I9 QUII IN emm Hie 4 i 1 1 a TN 1 ud pod 1a I ENE Hi Eua 4 DM 4 i pu ope pne E Tow 1 mentes Sed 8 i 1 1 TN 1 Hine en d 1 1 8 T Doja mo ij 1 D 14 1 1 L 1 1 1 i 1 1 1 1 1 arse NL UIT E Ad ERA H 3 tit Ir uro x da Eos K 4 OE a lele O i l a q O F d dU LGE Internal Use Only Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes SECRET LG ELECTRONICS Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes zr LGEectronics sr H sfr afri afer m HI LG E ETRONIES AOADA NA AO N MODEL BLOCK
10. Signal Quality Normal over 50 JE By using Digital signal level meter Check whether other equipments have problem or not By connecting RF Cable at other equipment DVD Player Set Top Box Different maker TV etc Check RF Cable Connection 1 Reconnection 2 Install Booster A7 Check S W Versio Booster menu DY Normal gt gt On Off Check xd 27 in Seres ulletin Off On Check ke N L D y S W Upgrade Contact with signal distributor or broadcaster Cable or Air oN Normal gt N Picture SS p Ix Zr Close W Menu Setup Booster 3 13 Pd ormal Y Normal gt Close L lt Check Tuner soldering i 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 ES A Picture Problem DVB S S2 grs 2011 01 24 ate LCD TV symptom Tuning fail Picture broken Freezing Revised date 3 13 A6 Check RF signal cable DVB satellite signal or not 7 Check whether other equipments have problem or not Check RE Stgnallevel L By connecting RF Cable at other equipment Set Top Box Different maker TV etc pu ma satellite setting Aa heck LNB frequency p y Normal Y i formai SS Check Replace gt Check satellite lt gt
11. Standard Repair Process Error LCD TV symptom Check input signal Check technical information Fix information S W Version Check and fix external device cable rnal Input Component e anon pne RGB HDMI DVI Optical Recognition errof information Fix in accordance with technical information D Function error External device recognition error Revised date nn Replace Main B D Replace Main B D 11 13 LGE Internal Use Only Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes Standard Repair Process LCD TV Identify nose type Error symptom Circuit noise mechanical noise Replace PSU with LED driver Check id eci location of OR noise Replace LED driver Check location of noise Part related to nose in the Owner s Manual gt x Mechanical noise is a natural phenomenon and apply the 1st level description When the customer does not OR agree apply the process by stage Describe the basis of the description in L XX When the nose is severe replace the module For models with fix information upgrade the S W or provide the description X If there is a Tak Tak noise from the cabinet refer to the KMS
12. v H x 6 Revised date Remote control and intelligent sensors Power indicator Touch buttons A17 Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error symptom B Power error No power Established date Revised date 2010 12 14 LCD TV Content Check power input voltage and ST BY 5V A18 For 10 models there is no voltage out for st by purpose When st by only 3 5V is normally on Power on 24V GND GND 3 5V 3 5V GND GNO GNO GNO Inverter On off 12V 12V Lamp A Dim LED N C PWM Dim 1 12V GND P_DIM2 Lamp SCANNING Model PWM Dim 2 Error out Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Detail Technical Manual Error Established LCD TV symptom B Power error No power iate 2010 12 14 Content Checking method when power is ON EE A19 Edge LED ET Power on 24V LI 24V 24V GND GNO GND GNO 3 5V 8 5V 3 5V 3 5V 5 GND GNO GND GNO 12V Inverter On off 12V Lamp A Dim LED N C 12V PWM Dim 1 GND P_DI
13. Main B D Y gt HDMI RGB and HDMI DVI by Fi connecting Jig pattern NDI 9 Jig p ene NA Generator Set top Box etc Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error LCD TV symptom No power Revised date 6 13 ww A17 ZON DC Power on ZN N aid AN Repl Check L Y h N S Ww Y Replace Fede LED On EQ by pressing Power Key gt ld adit mak OK 7 Power bu On Remote control 4 B D Stand By Red N A Y Ys Operating white Check Power cord Replace Main B D was inserted properly AA AA 1 MON Measure voltage of each output of Power B lt Normal N 7 T Y x AN forman Y p Replace Main B D f ZEN voltage Close Normals NA XS ck ST BY 3 5V gt J oltage N NS Y A18 Replace Power B D N Replace Power B D Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process B Power error Off when on off while viewing power auto on off A22 Error LCD TV symptom Check outlet 31 ZN Check A C cord gt lt Error gt Y P 4 S Check for all 3 phase y power out Fix A C cord amp Outlet and check each 3 phase out Please refer to the all
14. Voltage and speaker checking method when there is no audio C Audio error Wrecked audio discontinuation Voltage and speaker checking method in case of audio error D Function error_ No response in remote controller key error Remote controller operation checking method D VCOM Adjustment Sequence of the Vcom adjustment Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error i LCD TV symptom A Video error No video Normal audio FStapished 2010 12 14 Revi Content Check White Balance value HEA A4 EZ ADJUST 0 Tool Option1 1 Tool Option 2 Tool Option3 de Option4 R Gain G Gain B Gan 8 ADC Calibration R Cut 9 White Balance G Cut 11 20 Point WB B Cut 12 Test Pattern Test Pattern 13 Sub B C i 14 Touch Sensitivity Setting Backlight Reset 15 Ext Input Adjust Entry method 1 Press the ADJ button on the remote controller for adjustment 2 Enter into White Balance of item 7 3 After recording the R G B GAIN Cut value of Color Temp Cool Medium Warm re enter the value after replacing the MAIN BOARD Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Detail Technical Manual Error Established
15. acrylic coating to the areas S Small Signal Discrete Transistor Removal Replacement 1 Remove the defective transistor by clipping its leads 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 S RO 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
16. and Serial Number If the TV set is downloaded by OTA 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 7 Model Number D L like below photo 3 Input the Factory model name or Serial number like photo Input Model name HEX HDMI1 78 03 0C 00 10 00 B8 2D 20 CO OE 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10 HDMI2 78 03 0C 00 20 00 B8 2D 20 CO OE 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10 HDMI3 78 03 0C 00 30 00 B8 2D 20 CO OE 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10 HDMI4 78 03 0C 00 40 00 B8 2D 20 CO OE 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10 4 6 Model name amp Serial number D L Press Power on key of service remote control Baud rate 115200 bps Connect RS232 Signal Cable to RS 232 Jack Write Serial number by use RS 232 Must check the serial number at the Product Service info menu key red key select product Service info el Number CMLCPTDOIS 4 6 1 Signal Table 4 Check the model name Instart menu Factory name displayed 5 Check the Product Service info Menu Key Support Select Product Service Info Buyer model displayed n Check Key on Remote control 4 7 Local Dimming Func Step 1 Turn on TV and push the in Power Only Mode Step 2 At the Lo
17. fix information and then proceed as shown in the solution manual For models without any fix information provide the description 12 13 Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process LCD TV Error symptom ymp Exterior defect Revised date i Zoom part with exterior damage z ae lama NY ge F Exterior defect v 4 abi binet bn damage v B m t gt Controlle lamag mage N Stand dent V 7 Replace cabinet Replace remote controller gt Replace stand Replace module mmg Adjust VCOM A28 13 13 Copyright 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 Continued from previous page Remarks B Power error No power Check front display LED Check power input Voltage amp ST BY 5V Checking method when power is ON POWER BOARD voltage measuring method B Power error Off when on off while viewing POWER OFF MODE checking method B Power error Off when on off while viewing C Audio error No audio Normal video POWER BOARD PIN voltage checking method Checking method in menu when there is no audio
18. i duci c ea d a 5 4 0 MOK dc Pie ES oS moms LEES ET Elapsed Time Us Eke 9 LGE Internal Use Only USB DOWNLOAD epk file download 1 Put the USB Stick to the USB socket 2 Automatically detecting update file in USB Stick If your downloaded program version in USB Stick is Low it didn t work But your downloaded version is High USB data is automatically detecting 3 Show the message Copying files from memory Aw TV Software Upgrade Expert Copy the file from the Memory Do not remove the USB from the port Do not unplug 4 Updating is starting ED Situ Upgrade E WV Sofa Upgrade UPGRADING COMPLETED TheTV wilt rastar antamia Tene Deni 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 3 1 ADC Process Enter Service Mode by pushing ADJ key Enter ADC mode by pushing gt key at 8 ADC Calibration There are 2 ways for ADC Calib
19. inspection Push In stop key Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 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 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 filexxx bin ttt ta Start adin c DART saei T lapsed Tine w DSE on 4 Click Connect tab If Can t is displayed check connection between computer jig and set MStar ISP Ut Vat 0 ss wa Ex ves mal Dewo iter fees Ao BEY rasure roer Use usa Commentator Sering Spod 74 WT gt ronte ese EX T Reese Ho me er WZ pini evite UART T2e T Pu ah Pre Ha esgssc Time Flash Stats t Please Check the Speed To use speed between from 200KHz to 400KHz 5 Click Auto tab and set as below 6 Click Run 7 After downloading check OK message se ux Er g enes tse fess an oP ote ese nee gem v 1 RW ReGonnect Blank kabel PUT ETT 2 deres o cem hot
20. second Resistance must be less than 0 1 0 Base on Adjustment standard LGE Internal Use Only SERVICING PRECAUTIONS CAUTION Before servicing receivers covered by this service manual and its supplements and addenda read and follow the SAFETY 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
21. service purposes LOCAL DIMMING To LED DRIVER Ee LG ELECTRON Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes POWER BLOCK THIS IS REVERSE PATTERN S Right Source 41PIN LOCATION zi LEVEL SHIFTER BLOCK gt SECRET LG ELECTRONICS Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes eMMC I F _AGB AGB 2GB 3K EMMC EMMC SAND I HYNIX SAMSUNG EMMC GED HYNIX EMMC 2GB ie Don t Connect Power At VDDI Just Interal LDO Capacitor Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Place Near Micom JIS SCHEMETIC DIAGR NT FOR PROTECTION FR N ARDS WHEN SER SECRET r MODEL DATE id a ae THEA iis a XK OF THE sciauezic LGEectronics is ELELTRONILS BLULK O SHEET UY Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and servic
22. 501 TU6502 G351D SQ HO51F pewep Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes FOR COMMERCIAL 12V OUT RS 232C 9 PIN OPT COMMER EXT 12V 100 r COMM LO OUT JACK ER EXT AMP OCK HAZARDS WHEN SECRET ESSENTIAL THAT ON PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE Serene LGElectronics is ELELTRONILS Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes FOR COMMERCIAL AUDIO OUT OPT COMMER EXT AMP BLOCK SHEET LGE Internal Use Only SECRET LG ELECTRONICS Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and
23. 6 21 so 8o 51 00 t amp 20 oxos 4o 70 36 oo no sa o0 oo oo 1E 00 oo oo FD 00 3 oxos s te 53 10 00 oa zo zo zo zo zo 20 d ox07 d oo Tes 2 3D FHD RGB EDID data xvYCC OFF oxoo oxo1 0x02 0x03 oxo 0x05 xo xo 0x08 0x09 0x0A p os xoc pxop xa xor xoo oo FF FF FF rr rr rr oo E sb a b foxo c or os 80 no sa re m EE amp AS 4 4c 99 ze xoz oF so 54 At oe 00 si 4o 45 0 a1 40 zt 40 81 8G loos or o1 or or or or o2 3a 8o 18 71 38 20 a0 8 20 xoa 4s oo Ao sa oo oo o0 t e 21 so 8o st oo te a0 oxos 40 70 36 oo no sa o0 oo oo 1E 00 oo oo FD 00 3 oxos se 1E 53 10 00 oa 20 zo zo zo zo 20 d oxo7 d 91 et oxo o2 os 37 F 10 9F oa 1s os 14 03 2 2 20 a Jaxon 22 15 o1 26 is or so os sr 7 t 0x02 f Da3 T ES os or oz sa 80 x8 71 38 zo 4 se Oxoa 2c 45 00 Ao 5 oxos zo sa 2c 25 00 Ao sa oo oo oo SE or 0 00 72 5t 28 00 oxo po t zo ss oo ao sa 00 00 oo t 00 oo oo ioxo7 oo oo oo 00 oo o0 a0 oo oo oo oo oo 00 00 e
24. 69 273 285 293 309 323 co o o o oma 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 gt Enter the mode of White Balance the pattern will come out Full White Pattern C exse coLoR ANALYZER TYPE CA210 RS 232C Communication Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes M Color Temperature COOL Medium Warm One of R Gain G Gain B Gain should be kept on OXCO and adjust other two lower than CO When R G B Gain are all CO it is the FULL Dynamic Range of Module Manual W B process using adjust Remote control After enter Service Mode by pushing ADJ key Enter White Balance by pushing p key at 9 White Balance White Balance 1 10 Point WB TI Test Pa Hn om DEM rez 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 LGE Internal Use Only 4 2 DPM operation conf
25. As pushing the right or the left button on the remote controller And find the V COM value Which is no or minimized the Flicker If there is no flicker at default value Press the exit key and finish the VCOM adjustment W Push the OK key to store the value Then the message Saving OK is pop W Press the exit key to finish V COM adjustment V Com T u0 Saving OK Press to save Press to save Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes
26. B Voltage 24V orm Replace Main B D for External Jnput V Connect and check other external device Replace Power B D 9 13 Replace Main B D ZN Normal audio A Check and fix external device Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process E D General Function Problem Established 2010 12 14 Iron date Sinis LCD TV symptom H 1 Remote control amp Local switch checking Revised date 10 13 1 Remote control R C operating error Replace Main B D A27 A27 gt A27 Check R C itself Normal Y ies ene formar Check B 3 5V Norma Y Check IR Normai y ina s i i 2 Si 2 Operation operating Conhector solder operating On Main B D Voltage Output signal Signal N P pu oz N N Y Y A4 li Check R C Operating Check amp Replace Check 3 5v on Power B D Repair Replace When turn off light Battery of R C Replace Power B D or IR B D in room ee It RIC operate scarring gt Close Explain the customer cause is interference J N from light in room Replace R C Replace Main B D Power B D don t have problem Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only
27. E JACK s s we 9 v Be v v MODEL DATE TGBsctoke LG ELECTRONICS BLOCK SHEET Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Soft Touch Micom D L Zener Diode is close to wafer ESD for LG1152 SECRET LG ELECTRONICS Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes 5V_ USB FOR USB USB1 DVR Ready Vout 0 8 1 R1 R2 q SN1104041 ESD for LG1152 SECRET 1G ELECTRONICS Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes ZigBee Radio Pulse M REMOTE OPTION AN WN WN NN M_REMOTE ALL M_REMOTE OPTION j I I I I l
28. F BY OH TIMER 4 POWER OFF BY REMOTE KEY 1 Press the IN START button of the remote controller for adjustment 2 Check the entry into adjustment item 3 A22 Copyright O 2012 LG Electronics Inc Only for training and service purposes All rights reserved LGE Internal Use Only Error symptom Standard Repair Process Detail Technical Manual C Audio error No audio Normal video rds 2010 12 14 LCD TV lt ALL MODELS gt Content Checking method in menu when there is no audio E infinite Sound Off Treble 0 mm Bass to mmm Reset Ze 9 e DTV Audio Setting Auto A24 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual LCD TV Rem C Audio error No audio Normal video cmt 2010 12 14 canisi whan hera le no audio ee dem A25 ALL MODELS 24 Pin Power Board gt Main Board Common SMAW200 H24S YEONHO Power on 2 20V 24V 20V 24V 4 20V 24V GND 6 GNO GND 8 GNO 3 5V 10 3 5V 3 5V 12 3 5V GND 14 GND GND 16 GND 12V 18 Inverter On off 19 12V 20 Lamp A Dim LED N C 1 12V 22 PWM Dim 1 23 GND P_DIM2 24 Error out Checking order when there is no audio Check the contact condition of or 24V connector of Main Board Measure the 24V input voltage supplied f
29. M2 Error out Lamp SCANNING Model PWM Dim 2 Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes LCD TV ALL MODELS Standard Repair Process Detail Technical Manual Error symptom B Power error Off when on off whiling viewing Established date 2010 12 14 Content POWER OFF MODE checking method GEE 00 00 07 01 1 02 9 1 00 58 C Duty 5 99 99 0 01 0 01 Chip Type MTK 5369 Wi Fi Version Wi Fi Channie 1 Stable 12 SDP Ser 13 Network Error History 14 RF Remocon Test HDCP2 0 15 Access Code DTCP ESN Num RF Receiver A Demod F W D Demod F W Null f t tus 5B Status 0 0 T 0 C APP History Ver 27992 Eye Q Gain 4478 DB LGD ELF 2176 00000x Entry method date Power ott 0 POWER_OFF_BY_REMOTE_KEY1 1 POWER OFF BY ACDET 2 POWER OFF BY ACDET 3 POWER OFF BY ACDET 4 POWER OFF BY ACDET POWER_OFF_BY_ACDET j POWER_OFF_BY_ACDET POWER OFF BY ACDET ER IER OFF BY ACDET ER R POWI POWER_OFF_BY_ACDET 10 POWER_OFF_BY_REMOTE KEY 1 OFF DET M F DET 13 POWER OFF BY ACDET 14 POWER OFF BY ACDET 45 POWER OFF BY REMOTE KEY 16 POWER OFF BY REMOTE KEY 17 POWER OFF BY KEYTIMEOUT POWER OFF BY REMOTE KEY 19 POWER OFF BY REMOTE KEY 20 POWER OFF BY REMOTE KEY 21 POWER OFF BY REMOTE KEY 22 POWER OFF BY REMOTE KEY 24 POWER OF
30. North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Life s Good LED LCD TV CHASSIS LB22E MODEL 55LM6200 55LM6200 TA 55LM620Y 55LM620Y TA CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL P NO MFL67441812 1201 REV00 Printed in Korea CONTENTS CONTENTS nanne nrnrenanaenenenennenenensnenenenenenvenenensnenenenenenvenenenenenene 2 SAFETY PRECAUTIONS nnnnnannnernenenenennenenensnenenenenennenenenenene 3 SERVICING PRECAUTIONS SPECIFICATION nnn nnnenenenenennenenensarneneneneenenenenenenenenenennenenenenent 6 ADJUSTMENT INSTRUCTION nne ennaa Aaa 9 SCREW ASSEMBLY WORKING GUIDE sese 15 BLOCK DIAGRAM nnen ennernenenanenenenennenenensnenenenenvenenenensnene 16 EXPLODED VIEW ee nnenaeennenenenenennenensnnnsnenenenvenenenensnene 17 SCHEMATIC CIRCUIT DIAGRAM 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 Ha
31. S w o 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 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 p
32. V DVI PC HDMI Ver 1 4 j pu HDMI3 DTV DVI HDMI4 DTV DVI Support HDCP RGB DVI Audio 9 Audio Input Component AV 10 SPDIF out SPDIF out 11 USB Input For My Media Movie Photo Music List Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only 5 Component Video Input Y CB PB CR PR No Resolution H freq kHz V freq Hz Porposed 1 720x480 15 73 60 00 SDTV DVD 480i 2 720x480 15 63 59 94 SDTV DVD 480i 3 720x480 31 47 59 94 480p 4 720x480 31 50 60 00 480p 5 720x576 15 625 50 00 SDTV DVD 625 Line 6 720x576 3125 50 00 HDTV 576p 7 1280x720 45 00 50 00 HDTV 720p 8 1280x720 44 96 59 94 HDTV 720p 9 1280x720 45 00 60 00 HDTV 720p 10 1920x1080 31 25 50 00 HDTV 1080i 11 1920x1080 33 75 60 00 HDTV 1080i 12 1920x1080 33 72 59 94 HDTV 1080i 13 1920x1080 56 250 50 HDTV 1080p 14 1920x1080 67 5 60 HDTV 1080p 6 RGB input PC No Resolution H freq kHz V freq Hz Proposed Remark 1 640x350 70Hz 31 468 70 09 EGA 2 720x400 70Hz 31 469 70 08 DOS 3 640 x 480 60Hz 31 469 59 94 VESA VGA 4 goo x 600 60Hz 37 879 60 31 VESA SVGA 5 1024 x 768 60Hz 48 363 60 VESA XGA 6 1152 x 864 60Hz 54 348 60 053 VESA 7 1360 x 768 60Hz 47 712 60 015 VESA WXGA 8 1920 x 1080 60Hz 67 5 60 WUXGA CEA 861D FHD only Copyright 2012 LG Ele
33. ath 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 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 w LGE Internal Use Only 1 Application range SPECIFICATION NOTE Specifications and others are subject to change without notice for improvement This specification is applied to the LCD TV used LB22E chassis 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
34. cal Dimming mode module Edge Backlight moving right to left Back light of IOP module moving Step 3 confirm the Local Dimming mode Step 4 Press exit Key E NN OM Local Dimming Dame Edge LED Model CMD LENGTH ADH ADL DATA 1 Data_n cs DELAY CMD AOh LENGTH 85 94h 1 16 bytes ADH EEPROM Sub Address high 00 1 ADL EEPROM Sub Address low 00 FF Data Write data CS CMD LENGTH ADH ADL Data_1 Data n Delay 20ms Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 13 LGE Internal Use Only 4 8 3D function test Pattern Generator MSHG 600 MSPG 6100 Support HDMI1 4 HDMI mode No 872 pattern No 83 1 Please input 3D test pattern like below 2 When 3D OSD appear automatically then select OK key 3 Don t wear a 3D Glasses check the picture like below 4 9 Wi Fi Test Step 1 Turn on TV Step 2 Select Network Connection option in Network Menu Network Connection Step 3 Select Start Connection button in Network Connection Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes 14 Step 4 If the system finds any AP like blow PIC it is working well 4 10 Magic Motion Remote control test 1 Equipment RF Remote control for test IR KEY Code Remote control for test 2 You must confirm the battery power of RF Remote c
35. cases which can be displayed on power off mode Mode Check Power Off E P i cpu norma VY IN Abnormal gt Replace Main B D Ge Normal N di Replace Power B D N17 NA If Power Off mode is ZS not displayed Normal Y A Check Power B D oltage Replace Main B D voltage No 3 Caution Check and fix exterior of Power B D Part Replace Power B D Status Power off List Explanation POWEROFF REMOTEKEY Power off by REMOTE CONTROL POWEROFF OFFTIMER Power off by OFF TIMER POWEROFF SLEEPTIMER Power off by SLEEP TIMER POWEROFF INSTOP Power off by INSTOP KEY POWEROFF AUTOOFF Power off by AUTO OFF Normal POWEROFF_ONTIMER Power off by ON TIMER POWEROFF RS232C Power off by RS232C l POWEROFF RESREC Power off by Reservated Record 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 POWEROFF ABNORMAL1 Power off by abnormal status except CPU trouble Abnormal FPOWEROFF 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 Error C Audio error Established date 2010 12 14 LCD TV
36. ctronics Inc All rights reserved sfe LGE Internal Use Only Only for training and service purposes 7 HDMI Input 7 1 DTV mode No Resolution H freq kHz V freq kHz Proposed Proposed 1 720 480 31 469 31 5 59 94 60 27 00 27 03 SDTV 480P 720 576 31 25 50 54 SDTV 576P 3 1280 720 37 500 50 74 25 HDTV 720P 4 1280 720 44 96 45 59 94 60 74 17174 25 HDTV 720P 5 1920 1080 33 72 33 75 59 94 60 74 17174 25 HDTV 10801 6 1920 1080 28 125 50 00 74 25 HDTV 10801 A 1920 1080 26 97 27 23 97 24 74 17174 25 HDTV 1080P 8 1920 1080 33 716 33 75 29 976 30 00 74 25 HDTV 1080P 9 1920 1080 56 250 50 148 5 HDTV 1080P 10 1920 1080 6743167 5 59 94 60 148 35 148 50 HDTV 1080P 7 2 PC mode No Resolution H freq kHz V freq Hz Proposed Remark 1 640x350 70Hz 31 468 70 09 EGA 2 720x400 70Hz 31 469 70 08 DOS 3 640x480 60Hz 31 469 59 94 VESA VGA 4 800 x 600 60Hz 37 879 60 31 VESA SVGA 5 1024 x 768 60Hz 48 363 60 VESA XGA 6 1152 x 864 60Hz 54 348 60 053 VESA 7 1280 x 1024 60Hz 63 981 60 02 VESA SXGA FHD only Support to HDMI PC 8 1360 x 768 60Hz 47 712 60 015 VESA WXGA 9 1920 x 1080 60Hz 67 5 60 WUXGA CEA 861D FHD only Copyright 2012 LG Electronics Inc All rights reserved 8 LGE Internal Use Only Only for training and service purposes ADJUSTMENT INSTRUCTION 1 Application Range This sp
37. del option download RS232 No tem CMD 1 CMD2 Data o Enter Download 4 4 o Whentranster the Mode In download Mode Mode In Carry the command EDID dala and ADC Automatically adjustment Model option Adjust A f E 90 0 The use of a internal pattem download Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 12 4 5 2 Manual Download Caution 1 Use the proper signal cable for EDID Download Analog EDID Pin3 exists Digital EDID Pin3 exists 2 Never connect HDMI amp D sub Cable at the same time 3 Use the proper cables below for EDID Writing 4 Download HDMI1 HDMI2 separately because HDMI1 is different from HDMI2 For Analog D sub to D sub For HDMI EDID DVI D to HDMI or HDMI to HDMI No Item Condition Hex Data 1 Manufacturer ID GSM 1E6D 2 Version Digital 1 01 3 Revision Digital 3 03 1 3D FHD RGB EDID data xvYCC OFF ox00 0x01 0x02 0x03 oxo nxos 0x06 oxo oxos oxos oxca pos xoc 0x00 xa xor loxool oo rr FF rr rr rr rr oo E sb a b xx c or os ss no 5A r amp EE 91 A3 sa c s ze xoz or so 54 At oe 00 31 4o 45 0 61 40 zt 40 et 8G xos or ot or ot ot 0 G2 a amp 8o 16 71 38 2D 40 5 ze loxoal 4s oo Ao sa 00 00 oo t 6
38. e purposes LG Life s Good 2012 LED LCD TV Engineering guide Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Contents of LCD TV Standard Repair Process Error symptom High category Error symptom Mid category Remarks No video Normal audio No video No audio Video error Video error video lag stop fail tunning Color error Vertical Horizontal bar residual image light Spot external device color error No power Power error Off when on off while viewing power auto on off No audio Normal video Audio error Wrecked audio discontinuation noise No response in remote controller key error Function error recording error memory error 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 LGE Internal Use Only Only for training and service purposes Contents of LCD TV Standard Repair Process Detail Technical Manual Error symptom Content Remarks A Video error No video Normal audio Check LCD back light with naked eye LED driver B 24V measuring method Check White Balance value Power Board voltage measuring method A Video error N
39. ecification sheet is applied to all of the LED LCD TV with LB22E chassis 2 Designation 1 The adjustment is according to the order which is designated and which must be followed according to the plan which can be changed only on agreeing 2 Power adjustment Free Voltage 3 Magnetic Field Condition Nil 4 Input signal Unit Product Specification Standard 5 Reserve after operation Above 5 Minutes Heat Run Temperature at 25 C 5 C Relative humidity 65 10 Input voltage 220 V 60 Hz 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 6 Adjustment equipments Color Analyzer CA 210 or CA 110 DDC Adjustment Jig equipment 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 key 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
40. fore handling any semiconductor component or semiconductor equipped assembly drain off any electrostatic charge on your body by touching a known earth ground 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 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 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 a
41. irmation Only Apply for MNT Model Check if Power LED Color and Power Consumption operate as standard Set Input to RGB and connect D sub cable to set m Measurement Condition 100 240 VQ 50 60Hz Confirm DPM operation at the state of screen without Signal 4 3 DDC EDID Write RGB 128Byte Connect D sub Signal Cable to D Sub Jack Write EDID DATA to EEPROM 24C02 by using DDC2B protocol Check whether written EDID data is correct or not For SVC main Assembly EDID have to be downloaded to Insert Process in advance 4 4 DDC EDID Write HDMI 256Byte Connect HDMI Signal Cable to HDMI Jack Write EDID DATA to EEPROM 24C02 by using DDC2B protocol Check whether written EDID data is correct or not For SVC main Assembly EDID have to be downloaded to Insert Process in advance 4 5 EDID DATA 1 All Data HEXA Value 2 Changeable Data Serial No Controlled Data 01 Month Controlled Data 00 Year Controlled Check sum 4 5 1 Auto Download When you turn on the TV EDID will set automatically Not operate EZ ADJUST 0 Too Option 1 Tool Option 2 Tool Option 3 Tool Optiong 4 Tool Options 5 Tool Option6 B Tool Option 7 Country Group B ADC Calibration 9 White Balance 1d 10 Point WB n IDC 14 Sub B C 16 P Gamma 17 Touch Sensitivity Setting 18 Ext Input Adjust lt Caution gt Never connect HDMI amp D sub Cable when EDID downloaded m Edid data and Mo
42. l rights reserved LGE Internal Use Only Only for training and service purposes Appendix Exchange PSU LED driver NEN a No Light Dim Light Dim Light Dim Light No picture Sound Ok Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Appendix Exchange the Module 1 Panel Mura Light leakage Panel Mura Light leakage Press damage Crosstalk Press damage Crosstalk Un repairable Cases In this case please exchange the module Press damage Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Appendix Exchange the Module 2 Vertical Block Source TAB IC Defect Horizontal Block Gate TAB IC Defect Horizontal Block Gate TAB IC Defect Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes p Vertical Line Vertical Block Source TAB IC Defect Source TAB IC Defect Horizontal Block Horizontal line Gate TAB IC Defect Gate TAB IC Defect Un repairable Cases In this case please exchange the module LGE Internal Use Only Standard Repair Process Detail Technical Manual B Power error No power Error LCD TV symptom Established date 2010 12 14 Content Check front display LED 1 soy Screen a OKG HOME INPUT O I
43. o video Video lag stop TUNER input signal strength checking method LCO TV Version checking method A Video error Color error LCD TV connection diagram Tuner Checking Part Check Link Cable LVDS reconnection condition 32 37 42 47 55 32 AUO Adjustment Test pattern ADJ Key A Video error Vertical Horizontal bar residual image light spot LCD TV connection diagram Check Link Cable LVDS reconnection condition 32 37 42 47 55 32 AUO Adjustment Test pattern ADJ Key lt Appendix gt Defected Type caused by T Con Inverter Module Exchange T Con Board 1 Exchange T Con Board 2 Exchange LED driver Board PSU 55 driver board Other PSU Exchange Module itself 1 Exchange Module itself 2 A 5 5 Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes Continue to the next page LGE Internal Use Only Standard Repair Process Error A Video error Established date 2010 12 14 LCD TV svmplom No video Normal audio Revised date First of all Check whether all of cables between board is inserted properly or not Main B D lt Power B D LVDS Cable Speaker Cable IR B D Cable Jn NEBST Move to No video No audio wee Precaution A7 amp A3 Always check amp record S W Versi ind White Balance value before replacing the Main B
44. oard 1 N ZN No video Normal Y Check Back Light DA Ns NE Naudo EE K 4 yn A 1 eck Power Board 24v output i A4 Check Power Board 2v 3 5v etc eS rA formals Y gt voltage b Repair Power Board or parts a Korma S voltage Replace Inverter or module NAA In Repair Power Board or parts 1 13 Replace T con Board or module And Adjust VCOM A28 Replace Main Board Re enter White Balance value Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Error LCD TV No Video No audio symptom x A No video No audio Revised date si A4 Check various voltages of Power Board 3 5V 12V 20V or 24V A LN Normal_Y voltage NC IL Replace Power Board and repair parts Check and replace MAIN B D 2 13 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process LCD TV A6 Check RF Signal level Established date A Picture Problem Error 2010 12 14 symptom Picture broken Freezing Revised date By using Diagnostics menu on OSD Menu gt Set up Support Signal Test Signal strength Normal over 50
45. old 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 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 S Bo a m o a LGE Internal Use Only IC RemovelReplacement 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 lt is not necessary to reapply
46. oller for adjustment Tool Option2 Tool Option3 Tool Option4 Tool Option5 Tool Option amp AT Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error A Video error Vertical Horizontal bar Established 2010 12 14 LCD TV Symprom residual image light spot dele desk Content LCD TV connection diagram 1 IGI A8 ALL MODELS Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Detail Technical Manual Error 1 i Established LCD TV symptom Video error Video error video lag stop aic 2010 12 14 Content TUNER checking part Eu A9 ALL MODELS Checking method 1 Check the signal strength or check whether the screen is normal when the external device is connected 2 After measuring each voltage from power supply finally replace the MAIN BOARD Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Detail Technical Manual Error Established LCD TV symptom A Video error Color error ERE 2010 12 14 Content Adjustment Test pattern ADJ Key E A12 LT MEME White 2 rd EI EZ ADJUST Test Patem Test Pattem Tool Option Tool Option2 Pattern C
47. ontrol Tool Option3 Tool Option4 Tool Option5 Tool Option6 Tool Option7 Country Group ADC Calibration Test Pattern White Balance patentoi fed Press 8 to hide OSD EE Game Vm DO ID 01 ND 5 Test Pattern SUD B C Touch Sensitivity Setting Ext Input Adjust Test Patten hmetwu T Press 0 to hide 0S0 Test Pattem Pattem Control ET Press O to hide OSD You can view 6 types of patterns using the ADJ Key Checking item 1 Defective pixel 2 Residual image 3 MODULE error ADD BAR SCAN BAR 4 Video error Classification of MODULE or Main B D Copyright O 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Appendix Exchange T Con Board 1 Solder defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Abnormal Power Section Solder defect Short Crack Abnormal Power Section Solder defect Short Crack Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Appendix Exchange T Con Board 2 Abnormal Power Section Abnormal Power Section Solder defect Short Crack W x VC Solder defect Short Crack Fuse Open Abnormal power section Abnormal Display F GRADATION Noise GRADATION Copyright 2012 LG Electronics Inc Al
48. ontrol before test recommend that change the battery per every lot 3 Sequence test 1 if you select the Start OK key on the Adjustment remote control you can pairing with the TV SET 2 You can check the cursor on the TV Screen when select the OK key on the Adjustment remote control 3 You must remove the pairing with the TV Set by select OK key Mute key on the Adjustment remote control 4 11 Outgoing condition Configuration m When pressing IN STOP key by Service remote control Red LED are blinked alternatively And then automatically turn off Must not AC power OFF during blinking LGE Internal Use Only SCREW ASSEMBLY WORKING GUIDE Screw specification and application situation FAB31339402 M3 L4 5 BK Machine 14EA FAB31339201 M3 L10 BK Taptite BEA FAB30016122 M4 L20 BK Taptite 4EA lt Warning gt Check Screw Type When Screw is assembled at A Part If C Screw is used at the A part Module will get damaged Copyright O 2012 LG Electronics Inc All rights reserved 15 LGE Internal Use Only Only for training and service purposes BLOCK DIAGRAM T EBD Dzet su vn zeusoupa e M NVI 1 ba i oz 1no aag JH brido 1 1 uy 4 loranv 2d 1 A H a5u e 889 H93 2d 1 1 Jeoy 1 eo TrdWio3 me ruvn Ids NO STI M LIN PIWGH I IWGH woudaa 1 erwan Dan i TIWGH
49. or analyzer s prove vertically 80 100 3 Aging time After aging start keep the power on no suspension of power supply and heat run over 5 minutes X 0 269 20 002 Using no signal or POWER ONLY or the others check Cool 13 000 K a Y 0 273 80 002 rest Signal gt the back light on Medium 9 300 K pen anes Inner pattern Auto adjustment Map RS 232C 0 002 204gray 80IRE RS 232C COMMAND Warm 6 500 K 313 0 002 CMD ID DATA i 329 10 002 Wb 00 00 White Balance Start wb 00 ff White Balance End White Balance table RS 232C COMMAND CENTER Edge LED module change color coordinate because of IEMD ID DATA MIN DEFAULT MAX aging time Cool Mid Warm Cool Mid Warm Apply under the color coordinate table for compensated R Gain jg Ja jd oo 172 192 192 192 aging time G Gain jh Jb je oo 172 192 192 192 Aging Cool Medium Warm B Gain ji Je t oo 192 192 172 192 GPA time x y x y x y R Cut 64 64 e4 128 Min 269 273 285 293 313 329 G Cut 64 64 64 128 0 2 280 287 296 307 320 337 B Cut 64 e4 64 128 35 279 285 295 305 319 335 6 9 277 284 293 304 317 334 Caution 10 19 276 283 292 303 316 333 20 35 274 280 290 300 314 330 36 49 272 277 288 297 312 327 50 79 Zn 275 287 295 311 325 80 119 270 274 286 294 310 324 Over 120 2
50. ration OTP External OTP mode Automatic ADC Calibration Internal ADC Calibration On the manufacture line OTP is used for ADC Calibration automatically Externl mode Manual ADC Calibration When OTP mode is failed ADC calibration should be OK by using External mode 3 1 1 OTP mode 1 Press ADJ key on the Adjustment Remote Control then select 8 ADC Calibration By pressing Enter key enter ADC Calibration menu 2 Set up the ADC Type to OTP then Select Start button by pressing Enter key Component and RGB are Written and display Success or NG Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 10 3 1 2 External mode Equipment MSPG 925 series Pattern Generator RS 232C Jig 1 Input the signal for TV SET by using Pattern Generator Model 225 Pattern No 65 1080P 2 Change the ADC type External by using P key 3 Enter Start key 4 Check the sign OK all of comp RGB Pattern Horizontal 100 Color Bar Pattern Pattern level 0 740 1 Vp p Image EZ ADJUST 0 Taol Option Tool Option ADC 4 Too Options 5 To Opens ADC Component County Group bc 3 White Balance 1 10 Pont WB Start o t T3 Sub B C 14 Toueh Sensitivity Setting 15 Ext Input Adjust lt Caution gt Using P ONLY key of the Adjustment remote control power on TV ADC Calibration Protocol RS232 wo f em cwb cwo
51. rom Power Board If there is no input voltage remove and check the connector 8 Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik sound when you touch the GND and output terminal the speaker is normal Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Detail Technical Manual Error D Function error No response in remote controller Established date 2010 12 14 LCD TV symptom key error Content Remote controller operation checking method ALL MODELS TOP BOTTOM Checking order 1 2 Check IR cable condition between IR amp Main board 3 Check the st by 3 3V on the terminal 6 Revised date 4 When checking the Pre Amp when the power is in ON condition it is normal when the Analog Tester needle moves slowly and defective when it does not move at all A27 P4102 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error LCD TV SYMpIom 3 Revised Content Sequence of the Vcom adjustment date A28 D VCOM Adjustment Established 2010 12 14 1 Case IW LCD module change E T Con board change 2 Equipment W Service Remote controller 3 Adjust sequence W Press the adj key W select V COM W
52. ssembly 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 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 e a o N e 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 h
53. symptom No audio Normal video Revised date A24 4 No audio Check user NN Screen normal menu gt Off Speaker off NS ff Y i Y Cancel OFF Check audio B 24V of Power Board Kerman Y gt lt voltage P Replace Power Board and repair parts Check Speaker Lp 4 disconnection Replace MAIN Board Replace Speaker 8 13 Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process LCD TV Error symptom AE ie mone Wrecked audio discontinuation noise Revised date Se abnormal audio discontinuation noise is same after Check input signal compared to No audio Check input signal v Signal N Y A Wrecked audio gt Piscontinuatio Noise for all audio RF External Input signal ormal7 gt N When RF signal is not received Request repair to external cable ANT provider Wrecked a dio iscontinuationi N Noise only Sor D TV U wrecked audio Discontinuation oles only held Analog Wr cked a dio In case of External Input signal error Check and fix external device Discontinuation N Noise only gt gt Check and replace speaker and connector A25 Check audio
54. tc If the exposed metallic part has a return path to the chassis the measured resistance should be between 1 MQ and 5 2 MO When the exposed metal has no return path to the chassis the reading must be infinite An other abnormality exists that must be corrected before the receiver is returned to the customer Copyright 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 qo Good Earth Ground such as WATER PIPE CONDUIT etc To Instrument s exposed METALLIC PARTS 0 15 uF 1 5 Kohm 10W When 25A is impressed between Earth and 2nd Ground for 1
55. the contacts with a pipe cleaner cotton tipped stick or comparable non abrasive applicator 10 by volume Acetone and 90 by volume isopropyl alcohol 90 99 strength CAUTION This is a flammable mixture Unless specified otherwise in this service manual lubrication of contacts in not required 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 M Lal ba bul o A eo 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 be
56. z LGE Internal Use Only 3 Detail EDID Options are below 4 6 2 Comand Set a Product ID Adjust mode CMD hex LENGTH hex Description HEX EDID Table DDC Function EEPROM WRITE A0h Sim mebytes Write n 1 16 0001 0100 Analog Digital Description b Serial No Controlled on production line c Month Year Controlled on production line ex Week 01 gt 01 Year 2012 gt 16 fix d Model Name Hex cf TV set s model name in EDID data is below 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 4 6 3 Method amp notice 1 Serial number D L is using of scan equipment MODEL NAME MODEL NAME HEX 2 Setting of scan equipment operated by Manufacturing LG TV 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 LG TV Technology Group 3 Serial number D L must be conformed when it is produced in e Checksum Changeable by total EDID data 3D FHD Model el e2 e3 HDMH 43 15 X HDMI2 43 05 X HDMI3 43 F5 X HDMI4 43 E5 X RGB X Xx 5C f Vendor Specific HDMI 3D FHD model 3D xvYCC OFF amp 3D xvYCC ON production line because serial number D L is mandatory by D book 4 0 Manual Download Model Name
57. z vaat Ener Ad 4 a Jo Jo Wrentanserie woon Alst MODE ode i Cary he command utra adsimen ADcsdus AncAdust A D 1 0 Che use ofa internal pattern Adjust Sequence aa 00 00 Enter Adjust Mode xb 00 40 Component Input 480i ad 00 10 Adjust 480i Compt xb 00 60 RGB Input 1024 768 ad 00 10 Adjust 1024 768 RGB aa 00 90 End Adjust mode Required equipment Adjustment remote control 3 2 Function Check 3 2 1 Check display and sound Check Input and Signal items 1 TV 2 AV SCART1 SCART2 CVBS 3 COMPONENT 4801 4 RGB PC 1024 x 768 60hz 5 HDMI 6 PC Audio In Display and Sound check is executed by Remote control lt Caution gt Not to push the INSTOP key after completion if the function inspection LGE Internal Use Only 4 Total Assembly line process 4 1 Adjustment Preparation W B Equipment condition CA210 CCFL EEFL gt CHO Test signal Inner pattern 80IRE LED gt CH14 Test signal Inner pattern 80IRE Above 5 minutes H run in the inner pattern power on key of Adjustment remote control Only EEFL 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 Col
58. zards 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 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 e

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