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LG Electronics 37LD345H Flat Panel Television User Manual

1. arse MN CL UIT ARMES H 3 tit Ir uro x K 4 af PEN O a gt pe 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 PLACE AT JACK SIDE PLACE AT MATIN SOC SIDE PLACE AT 1 f LG ELECTRONICS LGElectronics LGE Internal Use Only Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGEectronics sr tr m hn m LG E ETRONIES 00000 00 00 0 MODEL BLOCK DATE GHEET Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only
2. HEHEHEHE Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes FROM LIPS amp POWER B D P DET Pw 5V_Normal DEV_DCDC_TPS54327 DDR MAIN 1 5V pm i 7 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 2 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 5011 MICOM MODEL OPTION P147 ANI18
3. 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 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Detail Technical Manual Error symptom B Power error No power Established date 2010 12 14 Revised date EE Content Checking method when power is ON Edge LED zy 24V 24V GNO GNO GNO 3 5V GNO 3 5V 3 5V GND GND 12V 12V 3 5V GNO GNO Inverter On off Lamp A Dim LED N C PWM Dim 1 12V GND P_DIM2 Lamp SCANNING Model PWM Dim 2 Error out Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Detail Technical Manual rror symptom B Power error _Off when on off whiling viewing Established date 2010 12 14 lt ALL MODELS gt Content WEE CLO T nbe SKJY1107 00 00 07 01 1 02 9 1 00 58 0 0 y 5 99 99 0 01 0 01 MTK 5369 10 Wi Fi Channel d Wi Fi MAC 10 00 00 00 MDCP2 0 DTCP RF Receiver 00 00 A Demod F W Ver Null D Demod F W Ver Null bug Stat Access USB Status 0 0T 0 C APP History
4. SECRET LG ELECTRONICS Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes LOCAL DIMMING To LED DRIVER LG ELECTRON Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes lt POWER BLOCK gt THIS IS REVERSE PATTERN S Right Source 41PIN LOCATION zi LEVEL SHIFTER BLOCK gt SECRET ELECTRONICS Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes eMMC I F 4GB _4GB 2GB i5 x a H a 2 a HYNIX EMMC 2GB SAMSUNG EMMC DEV_HYNIX_EMMC 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 j id a ae THEA iis OF THE
5. 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
6. CNTY Yes Chine Smert TV 10 HA O Add Item 1 Marlin Yes No 2 CNTV Yes No 3 HDCP Tx Yes No 4 DTCP Rx Yes No 5 HDCP Rx Yes No 3 CNTV Yes China Smart TV Only LGE Internal Use Only 4 Changed BOM Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes Tool Option bits Range Remark Mac AP Key 101 off fon Automation checkup ESN_AP Key 1 Doff fon Automation checkup for Netflix Service AP Key 1 101 off fon Automation checkup WIDEVINE_AP Key 101 off fon Automation checkup for CP or 3D Zone Steaming Service Marlin_AP key 111 00 Aion Automation checkup EDID_TPE 2 fAC 2Rewerved 012 34 0 mA LED Current 2 1 100mA Setting PWM Duty each Module Tool OPT 2 105mA LED Bar Type LCD Only LCD V_12B V 6B 128 4 6B LED Bar LCD Only Pen Touch Tv PDP Onh Off Ready Buitin NULL Pen touch Ont DiiVa 101 XvYee 1 O not Support 1 Support Check whether or not support of Module Color Gamut Xv CC MRCU 1 WnotSupport 1 Support Check whether or not support of Voice recognition function Gesture 1 0 not Support 1 Support Check whether or not support of gesture recognition function 0 50_60Hz 1 PWM Freq 1 DB Setting each Module Sum of bits 16 Full Assign Guide Check whether or not key write MAC AP Global ESN_AP Global Except China AP EUICIS WIDEVINE AP Global MAR
7. LGElectronics is ELELTRONILS BLULK O SHEET UY Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes LG Life s Good 2012 LED LCD TV Engineering guide lt Applicable Model gt XXLM760S ZB Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes New features Main PCBs Block Diagrams IIC Map Structure of TV set and connection of sub ass ys New sub ass ys Instruction of new sub ass ys How to use tool Download Adjust way of new features widevine Repair guide The latest issue and concerning issue Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes EPI Interface EPI Embedded Point Point Interface Features Point Point topology support 2 Pair option CDR Clock Data Recovery Bandwidth up to 1 85Gbps pair at FHD 120Hz 10 bit application Lock signal cascading and feedback to T Con Embedded Control Data d Merits Better reliability on common noise No data skew and better EMI margin Fewer lines than mini LVDS Slim PCB design Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LOCK Figure1 Topology Table 1 Example of FHD 120Hz TV FHD 10bit 960
8. P51 INTP2 INTP1 SI11 SDA1l P16 TI01 TOC P5 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 r ESD for MTK ESD for LG1152 MODEL DATE TGBsctoke LG ELECTRONICS BLOLK SHEET Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training
9. Di bo LG ELECTRONICS MODEL BLOCK DATE SHEET Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ZigBee Radio Pulse M REMOTE OPTION AV WN WN NN M_REMOTE ALL M_REMOTE OPTION J Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Ethernet Block ESD for LG1152 SECRET LG ELECTRONICS Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes STA380BW JIS SCHEMETIC DIAGR NT FOR PROTECTION FR ON SHO ARDS WHEN SER N SECRET 3 CRITICAL COMPONENTS THE SYNBOL MARK LG ELECTRONICS SHEET Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes SECRET ELECTRONICS
10. Set Top Box Different maker TV etc aA Check satellite setting L u AT AN Normal Fin Ee Normal A sve N B Check Replace N Signal EATERS i setting S W Ve Bulletin lt Tuner soldering Main B D Se Check Satellite connection b A Sr N DiSEqC motor etc N Y S W Upgrade Y 7 Change satellite setting P signal distributor match with installed ANT Normal S or broadcaster icture Cable or Air N X e Norman N zd TN picture Clos Close ir ad WJ Y AN Close lt Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process A Video error Established 2010 12 14 date symptom pup Color error Revised date 413 A10 A11 x Y Check color by input AZ x feck and AN p replace Link Colors Y Yeas M menace Man Bp gt Color Replace module i a RGB error LVDS and eplace error Pace modus HDMI DVI v4 contact 7 E N condition N N Check error e color input mode A12 Check External Input external Ext rnal device Check Test pattern Component 4 lt Cable gt gt _ Replace Main B D N device and Serer d cable S d V
11. 3 14 5 BK Machine 12EA FAB31339201 M3 L10 BK Taptite BEA FAB30016122 M4 L20 BK Taptite Warning 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 18 LGE Internal Use Only Only for training and service purposes BLOCK DIAGRAM L y E D SNIWWIG 1 201 4 0 Jayn 2c ruvn 145 521 T HED lpzez su e 1 34 bido ALW Woud3a3 uru 1 eo 3d A H asule 888 sov yeay i 1 san 1 anoo r anoa 3104 1 i gt lafu B lzan opis B 1 E Sum asn E sasn LGE Internal Use Only 19 Copyright 2012 LG Electronics Inc 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 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 preven
12. Data rate 660Mbps 10bit FHD120 External clock Data rate 1 8Gbps Embedded clock Control Simple structure Fewer Lines 12 Embedded clock Meri e Standardization low EMI Clock skew free Easy to PCB design Too many lines 36 1 Clock skew Transmission Overhead Demerit EMI due to clock lines Bandwidth limit Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes Abit delimiter LGE Internal Use Only Main PCB for Broadband Main TCON all in one xxLM760S ZB Chassis LD22E PCB P No EAX64307905 WIFI Soft touch IR Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 1 1 LNB IC Only G S model 1 1 Main processor DDR Memory eMMC Memory Micom for Key IR sensing PMIC Audio AMP 10W 10W EPI Wafer Level shifter LGE Internal Use Only MTK5369 Block Diagram LM76 1 an ANALOG 1 Cable 1 Power load TUNER ele DIGITAL L 19905 17 1 1 18015 1 CONTROLER DVB S perius I 2 1 1 i I 3 uix ud uo use EB 4 use uses S LNB usB_WF T g Side HDCP EEPROM 1 0 4 L rout compii
13. VDD g 50Pin EPI RIGHT 901 199 LGE Internal Use Only GP4 Backend block diagram LVDS Tx amp Local Dimming ome L DIMO SCLK SUE L DIMO MOSI I2C SCLi STB_SCL 504 4 2 SDA1 L DIMO VS VSYNC Main SoC PANEL VCC 12V 51 Dual link LVD ual lini 5 Output LVDS 10bit R LVDS_SEL Output LVD S Tx BIT SEL LOW Block Dual link LVDS Output 41Pin 102 R LVDS Bm Output l JEIDA L or NC VESA LGD or NC 10 bit L 8 bit Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Interconnection 1 xxLM760S ZA Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes PCBs 6600 Main PCB Power Board Tact key PCB RF Assy WIFI Assy Cables Main LPB 24Pin cable Main Module EPI cable 50 amp 50PIN LED driver PSU 10Pin IR Touch Cable SPK Cable Local Dimming Cable RF Assy Cable WIFI Assy Cable LGE Internal Use Only 2012Y IR Soft touch PCB Circuit Block Diagram TV MAIN Pin Configuration KEY1 KEY2 Voltage Tolerance of voltage 0 2V 0 58V 0 09V 1 75V 118V KEY2 0 58V 0 09V 175V L18V Sensor CM3231 Ass y Picture TOP im p IR Receiver KSM 903SMRICL 2 KEY 12 B
14. 2 8V LDO M4 4 mode Only Bluetot BCM20702M BROADCOM oth 4 0 UART Bluetooth Remocon Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes Bluetooth Receiver LGE Internal Use Only 4 Function list Remocon 2 Item Ic Manufacturer Function Voice Codec WM8950 Wolfson 16KHz Sampling of Audio data Voice MEMS Mic SPU0414HR5H Knowles Sensing Voice Motion Gyro Sensor ITG3050 Invensense Sensing angular velocity of X Y Z axis Sensor DE Accelerometer MMA8452 Stmicro Sensing device tilt Pitch amp Roll angle RF Antenna SDBTPTR3015 Partron RF NM X tal 24MHz Partron Wireless communication Micom RF Micom BCM20733 Broadcom DC DC Converter TPS61097 Battery Boost up Regulator LDO1 uPI7716 uPI RF Gyro Accelerometer Power Supply LDO2 uPI7716 uPI Audio Codec Mic Power Supply Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only 5 RF Pairing Un pairing Method Description RF Pairing Method1 If unpaired just press OK button If paired press OK button after unpairing Method 2 Repairing Press BACK button for 5 sec When do pairing the remote should make pairing request IR signal 0x29 to TV When TV receive the IR signal
15. A Video error_Vertical Horizontal bar residual image light spot 17 lt Appendix gt 18 Defected Type caused by T Con Inverter Module 20 Content Remarks Check LCD back light with naked eye Al LED driver B 24V measuring method A2 Check White Balance value A3 Power Board voltage measuring method A4 TUNER input signal strength checking method A6 LCD TV Version checking method A7 LCD TV connection diagram A8 Tuner Checking Part A9 A1 A10 32 37 42 47 55 Check Link Cable LVDS reconnection condition m i 6 ps Adjustment Test pattern ADJ Key A12 LCD TV connection diagram A8 Check Link Cable LVDS reconnection condition 10 AID SPISTMPMTISS A11 A11 32 AUO Adjustment Test pattern ADJ Key A12 Exchange T Con Board 1 A 1 5 Exchange T Con Board 2 A 2 5 Exchange LED driver Board PSU 3 5 OT board Exchange Module itself 1 A 4 5 Exchange Module itself 2 A 5 5 Copyright 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 symptom 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 gt Power B D LVDS Cable Speaker Cable IR B D Cable p A1 AA A No video a
16. Y Check Back Light On NY Check Power Board Atormal Y Normal audio audio On with naked eye 12v 3 5v etc voltage gt NO qn T Move to No SA2 Check Power Board 24v output Repair Power Board video No audio X Precaution m A7 amp Always check amp record S W Version and White Balance value before replacing the Main Board or parts Replace Inverter oN Normal Y Voltage or module 4 d Replace T con Board or module And Adjust VCOM A28 gt Replace Main Board 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 Error symptom No Video No audio A Video error Established date 2010 12 14 uAA4 Check various voltages o Power Board 3 5V 12V 20V or 24V No video No audio ZI Normal X voltage Replace Power Board and repair parts Check and replace MAIN B D Revised date 2 13 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Established date Error A Picture Problem 2010 12 14 symptom Picture broken Freezing Revised date 3 13 AG By using Digital signal lev
17. 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 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Detail Technical Manual Error symptom A Video error_No video Audio Established date 2010 12 14 Revised Content Power Board voltage measuring method date Power on 24V 24V 4 24V GNO GNO GNO GNO 3 5V 3 5V 3 5V 3 5V GND GND GNO GND 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 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Detail Technical Manual Error T lt symptom A Video error Video error video lag stop Established date 2010 12 Content TUNER input signal strength checking method renee AG lt ALL MODELS gt Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Error symptom Standard Repair Process Detail Technical Manual A Video error_Video error video lag stop Established
18. Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes EARPHONI SCHEMETIC DIAGR FOR PROTECTION FROM N S WHEN ING IF IS SECRET THE Pe QS IN N SYMB az scenic LGElectronics ELECTRONICS BLOLK CHEET 7 Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 1 Option FOR MTK L amp ELELTRON Option FOR LG1152 LGE Internal Use Only T C S amp H NIM amp T2 C TUNER EU amp CHINA ERROR amp TU6501 TU6502 G351D SQ HO51F Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes DCDC_GND A_GND are connected DCDC_GND A_GND are conn
19. FACTOF 3 3 LAN 3 3 1 Equipment amp Condition Each other connection to LAN Port of IP Hub and Jig d s n 3 3 2 LAN inspection solution LAN Port connection with PCB Network setting at MENU Mode of TV Setting automatic IP Setting state confirmation If automatic setting is finished you confirm IP and MAC Address 1 92 168 123 254 LAN Hup PCBA JIG Ready Setting automatic IP Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 11 3 3 3 WIDEVINE key Inspection Confirm key input data at the IN START MENU Mode UTT 44 APP History Ver 19675 Eye Q Gain 5000 3 4 LAN PORT INSPECTION PING TEST Connect SET LAN port PC LAN Port SET Pc 3 4 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 3 4 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 e PingTest LGE Internal Use Only 3 5 Model name amp Serial number Download 3 5 1 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
20. amp Internal Pressure auto check preparation Check that Power cord is fully inserted to the SET If loose re insert 2 Perform GND amp Internal Pressure auto check Unit fully inserted Power cord Antenna cable and A V arrive to the auto check process Connect D terminal to AV JACK TESTER Auto CONTROLLER GWS103 4 ON Perform GND TEST I NG Buzzer will sound to inform the operator I OK changeover to I P check automatically Remove CORD A V form AV JACK BOX Perform I P test If NG Buzzer will sound to inform the operator If OK Good lamp will lit up and the stopper will allow the pallet to move on to next process 4 12 2 Checkpoint TEST voltage GND 1 5 KV min at 100 mA SIGNAL 3 KV min at 100 mA TEST time 1 second TEST POINT GND TEST POWER CORD GND amp SIGNAL CABLE METAL GND Internal Pressure TEST POWER CORD GND amp LIVE amp NEUTRAL LEAKAGE CURRENT At 0 5 mArms 5 Audio No Min Typ Max Unit Remark Audio practical 9 10 12 Ww EQ Off 4 max Output LIR AVL Off Distortion 10 8 10 10 8 vims Clear Voice Of max Output EQ Off 2 9 10 42 w avot impedance Clear Voice Off Measurement condition 1 RF input Mono 1 KHz sine wave signal 100 Modulation 2 CVBS Component 1 KHz sine wave signal 0 5 Vrms 3 RGB PC 1 KHz sine wave signal 0 7 Vrms Copyright O 2012 LG Electronics In
21. 0 1 comp 1 1 SCARTI 082105 cves 1 12S Out 5 LOCAL DIMMING M Remote I Rear Module PC RGBI 8 6 RGBH V 14 Remote Control Pc aupig rn IR oer DH srr ovr 2 pg LAN Til gt Ethernet uart 4 4 1 RS 232C EG 1 eee eee ee 1 Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Jack Interface Main SoC MTK SHAEPDIET BEDE INI gt SPDIF Full Scart 18 Pin Gender SC RGB gt PROP PBOP YOP SC DET gt OPCTRLS ICVBSOP 4 7 SC L R IN AINO L ADDC EH p g RUS oaa ME AV1_GVBS_DET________ 508 15010 CVBS 1 PHONE JACK SC ID a gt ADINO SRV SC CVBS IN CVBS p CvES2P is sony HP_LOUT MAN 1 T ARO ADAC HP ROUT Man 2 6 2 4 ROUT gt JACK DTV MNT_V_OUT OUTI VDACY OUT DTV MNT_L_OUT ISCART LOUT IAUOUTLO IC6000 SCART_ROUT AUOUTROI AZ4580M ee ANZ AADC 4 a PC AUDIO AIN2_R_AADC COMP 1 PHONE JACK COM PT gt YIPLPBIPIPRIP 1 DSUB DET m pET HRE i gt OPCTRLS vea scu PGB DDC SCL GA sb FGB DDC SDA Co
22. Inc All rights reserved Only for training and service purposes LGE Internal Use Only Appendix Exchange 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 Board 2 C Abnormal Power Section Abnormal Power Section Solder defect Short Crack Ta O Solder defect Short Crack Fuse Open Abnormal power section Abnormal Display GRADATION Noise GRADATION Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Appendix Exchange PSU LED driver No Light Dim Light Dim Light Dim Light No picture Sound Ok Copyright 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 m Crosstalk Press damage Crosstalk Un repairable Cases In this case please exchange the module Press damage Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and servi
23. Standard Repair Process Detail Technical Manual Error Established symptom C Audio error No audio Normal video date 2010 12 14 mm iei Aes ALL MODELS 24 Pin Power Board Main Board SMAW200 H24S YEONHO Power on 2 20V 24V 20V 24V 4 20V 24V GNO 6 GND GND 8 GND 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 21 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 2 Measure the 24V input voltage supplied from 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 symptom key error date 2010 12 14 Revised Content Remote controller operation checking method date 27 lt ALL MODELS gt Je Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Detail T
24. acrylic coating to the areas Small Signal Discrete Transistor Removal Replacement 1 Remove the defective transistor by clipping its leads as close as possible to the component body Bend into 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 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
25. and service purposes RS232C CVBS 1 PHONE JACK s we 9 we 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 LGEectronics Full Scart 18 Pin Gender
26. it should send pairing request packet to the RF receiver After pairing success the remote should blink LED for some time and TV send pairing success packet back to TV When remote try to unpairing it doesn t care about state of receiver stand alone RF Unpairing Press HOME button and BACK button at the same time for 5 sec Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes When remote try to unpairing it doesn t care about state of receiver stand alone After unpairing all pairing information should be erased After unpairing LED should be blinked for 3sec The remote just becomes to IR mode LGE Internal Use Only Introductions of 12 WIFI built in ass y Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes WIFI Built ass y feature LGIT WIFI built in feature USB interface 5V DM Switch diplexer i BCM43236B 1 1 1 802 11 MAC fom 1 24GHzPA 2x2 M soon 5 USE 20 j SGHZPA Radio Qj PHY SSN 3 1 H 1 lt 4 1 5 2 bits i 384K ARM Cortex 3 CPU 1 1 1 USB Connector Copyright 2012 LG Electronics
27. 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 etc If the exp
28. 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 Q II sensor 5 Remove your hand from the Eye Q Il sensor and wait for 6 seconds 6 Confirm that ok pop up If change is not seen replace Eye II sensor Sensor Data prov 4 4 Local Dimming Function Check Step 1 on TV Step 2 Press TILT key on the Adj RIC Step 3 At the Local Dimming mode module Edge Backlight moving right to left Back light of IOP module moving Step 4 Confirm the Local Dimming mode Step 5 Press exit key Ee LED Hose 4 5 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 control before test recommend that change the battery per every lot 3 Sequence test 1 if you select the Start Wheel 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 Wheel key on the Adjustment remote control 3 You must remove the pairing with the TV Set by select Mute key on the Adjustment remote control LGE Internal Use Only 4 7 Wi Fi Test Step 1 Turn on TV Step 2 Select Network Connection option in Network Menu Step 4 If the system finds any AP like blow PIC it is working well Copyright 2012 LG Electronics Inc A
29. the panel is at its Full Dynamic Range In order to prevent saturation of Full Dynamic range and data one of RIGIB is fixed at 192 and the other two is lowered to find the desired value 3 Adjustment condition normal temperature 1 Surrounding Temperature 25 C 5 C 2 Warm up time About 5 Min 3 Surrounding Humidity 20 80 1 Color Analyzer CA 210 LED Module CH 14 2 Adjustment Computer During auto adj RS 232C protocol is needed 3 Adjustment Remote control 4 Video Signal Generator MSPG 925F 720p 204 Gray Model 217 Pattern 49 Only when internal pattern is not available Color Analyzer Matrix should be calibrated using CS 100 4 2 2 Equipment 4 2 3 Equipment connection MAP Color Analyzer ipee Computer RS 282C KEA Pattern Generator Signal Source 7 internal patter is used not needed 4 2 4 Adj Command Protocol lt Command Format gt 50 a A A 00 A VAL A CS STOP LEN Number of Data Byte to be sent CMD Command VAL FOS Data value CS Checksum of sent data Acknowledge Ex Send 00 DD Ack A 00 okDDX RS 232C Command used during auto adjustment RS 232C COMMAND Explantion CMD ID wb 00 00 Begin White Balance adjustment wb 00 10 Gain adjustment internal white pattern wb 00 1f Gain adjustm
30. y Cool 0 269 0 273 13000K 0 0000 Medium 0285 0 203 9300K 0 0000 Warm 0313 0 320 6500K 0 0000 Standard color coordinate and temperature using CA 210 CH 14 Coordinate Mode Temp Auv x y Cool 0 269 0 002 0 273 0 002 13000 0 0000 Medium 0 285 0 002 0 293 0 002 9300 K 0 0000 Warm 0 313 0 002 0 329 0 002 6500 K 0 0000 4 2 7 LED White balance table EDGE LED module change color coordinate because of aging time Apply under the color coordinate table for compensated aging time ALEF LS57 series Aging Cool Medium Warm GP4 time X y x y x y Min 269 273 285 293 313 329 0 2 280 287 296 307 320 337 3 5 279 285 295 305 319 335 6 9 277 284 293 304 317 334 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 79 271 275 287 295 311 325 80 119 270 274 286 294 310 324 Overi20 269 273 285 293 309 323 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 15 4 3 EYE Q function check 1 Turn on TV 2 Press EYE key of Adjustment remote control 3 Cover the Eye Q II sensor on the front of the using your hand and wait for 6 seconds 4 Confirm
31. 080 26 97 127 23 97 124 HDTV 1080P 10 1920 1080 25 HDTV 1080P 11 1920 1080 33 716 33 75 29 976 30 00 HDTV 1080P 12 1920 1080 56 250 50 HDTV 1080P 13 1920 1080 67 43 67 5 59 94 60 HDTV 1080P 7 2 PC mode No Resolution H freq kHz V freq Hz Proposed 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 800x600 60Hz 37 879 60 31 VESA SVGA 5 1024x768 60Hz 48 363 60 00 VESA XGA 6 1152x864 60Hz 54 348 60 053 VESA 7 1280 x 1024 60Hz 63 981 60 020 VESA SXGA 8 1360x768 60Hz 47 712 60 015 VESA WXGA 9 1920 1080 60Hz 67 5 60 00 WUXGA Reduced Blanking Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ADJUSTMENT INSTRUCTION 1 Application Range This specification sheet is applied to all of the LED LCD TV with LD22E chassis 2 Designation 1 Because this is not a hot chassis it is not necessary to use an isolation transformer However the use of isolation transformer will help protect test instrument 2 Adjustment must be done in the correct order 3 The adjustment must be performed in the circumstance of 25 C 5 C of temperature and 65 10 of relative humidity if there is no specific designation 4 The input voltage of the receiver must keep AC 100 240 V 50 60 Hz 5 The receiver must be operated for about 5
32. 0i 720 480 31 47 59 94 480p 4 720 480 31 50 60 00 480p 5 720x576 15 625 50 00 SDTV DVD 625 Line 6 720 576 3125 50 00 HDTV 576 1280 720 45 00 50 00 HDTV 720p 8 4280x720 44 96 59 94 HDTV 720p 9 1280x720 45 00 60 00 HDTV 720p 10 1920x1080 3135 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 1 640 350 70Hz 31468 70 09 EGA 2 720x400 70Hz 31469 70 08 DOS 640x480 60Hz 31469 59 94 VESA VGA 4 800x600 60Hz 37 879 60 31 VESA SVGA 5 1024x768 60Hz 48 363 60 00 VESA XGA 6 1152 864 60Hz 54 348 60 053 VESA 4360x768 60Hz 47 712 60 015 VESA WXGA 8 1920 1080 60Hz 67 5 60 00 WUXGA Reduced Blanking Copyright 2012 LG Electronics Inc All rights reserved Only for training and service oses LGE Internal Use Only 7 HDMI Input 7 1 DTV mode No Resolution H freq kHz V freq kHz Proposed 1 640 480 31 469 31 5 59 94 60 SDTV 480P 2 720 480 31 469 31 5 59 94 60 SDTV 480P 3 720 576 31 25 50 SDTV 576P 4 720 576 15 625 50 SDTV 5761 5 1280 720 37 500 50 HDTV 720P 6 1280 720 44 96 45 59 94 60 HDTV 720P 7 1920 1080 3372133 75 59 94 60 HDTV 10801 8 1920 1080 28 125 50 00 HDTV 10801 9 1920 1
33. 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes 2 HDCP 2 0 amp NETFLIX Y Y HDCP High bandwidth Digital Content Protection i 1 D Protect high value digital motion pictures television programs and audio against unauthorized interception and copying between a digital set top box or digital video recorder and a digital TV or PC Specification developed by Intel Corporation to protect digital entertainment across the DVI HDMI interface Why HDCP2 0 HDCP revision 2 0 supports a broader range of wired and wireless interfaces Netflix the services maintain a huge selection of movies and latest releases and offer DVD rentals via mail amp online streaming Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes 3 DTCP The Digital Transmission Content Protection Specification defines a cryptogrphic protocol for protecting audio video entertainment content from unauthorized copying intercepting and tampering as it traverses digital transmission mechanisms such as a high performance serial bus that conforms to the IEEE 1394 1995 standard Only legitimate entertainment content delivered to a source device via another approved copy protection system such as the DVD Content Scrambling System will be protected by this protection system Three cryptographic Keys A
34. 462MHz Ch1 Ch11 2412 2472MHz Ch1 Ch13 2412 2484MHz Ch1 Ch14 BPSK 6 9 Mbps QPSK 12 1SMbps 16 QAM 24Mbps 64 QAM 48 54Mpb and above Current consumption SV DC Full load 430mA Operating Temperature 0 60 C ambient Storage Temperature 20 60 C ambient Humidity under 85 and must be non condensing Regulation and certification compliance available FCC e WiFi CERTIFIED WPS Wi Fi PROTECTED SETUP go Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only 12 Widevine amp HDCP 2 0 amp NETFLX 1 Widevine 2 HDCP 2 0 amp NETFLIX 3 DTCP 4 Changed BOM Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes 1 Widevine Widevine Widevine is the Solution Library offering Adaptive Streaming and DRM In BBTV when special CP do service this module is required key Currently CP which is requested to widevine is typically Australian Bigpond Live and North American CinemaNow Furthermore because the future will be the spread of CP widevine key download for the global model should be applied to production Because operation unique key should be downloaded for Widevine Widevine key dowmload by NSU is impossible Widevine Key Widevine Key is unique data stored TV for using Widevine Copyright
35. Adj key on the Adjustmetn Remote Control and select 9 ADC Calibration Set up the ADC Type to OTP then Select Start button by pressing Enter key Component and RGB are Writed and display Success or NG 2 Adj protocol Protocol Command Set ACK Enter adj mode aa0000 a00 0 xb 0004 b 00 OKO4x Adjust 480i 1080p Compt Source change xb 0008 b 00 OKO6x Adjust 1920 1080 RGB Begin adj ad 00 10 Case of Success Ratum adj result NGx Case of Fail mai main ad0020 000000000000000000000000007c007006dx Read adj data sub Sub 2410021 000000070000000000000000007c00830077x NG 03 00x Fall NG 03 01 Fall Confirm adj 240099 NG 03 02 Fal 03 03x Success End adj 0090 a 00 OK90x Ref ADC Adj RS232C Protocol_Ver1 0 3 Adj order 00 00 Enter ADC adj mode xb 00 04 Change input source to Component 48018 1080p ad 00 10 Adjust 480i amp 1080p 1 xb 00 06 Change input source to RGB 1024 768 ad 00 10 Adjust 1920 1080 RGB ad 00 90 End adj LGE Internal Use Only 3 2 MAC address DIL Cl key D L Widevine key D L ESN D L Connect USB port Communication Prot connection Com 1 2 3 4 and 115200 Baudrate Mode check Online Only check the test process DETECT gt MAC CI gt Widevine gt ESN Play START Result Ready Test OK or NG Printer Out MAC Address Label
36. C Symbolrate 4 0Msymbols s to 7 2Msymbols s Modulation 16QAM 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 Scart jack is Full scart and support MNT DTV OUT 4 Scart Gender Jack 1EA PAL SECAM not support DTV Aulo AV 4 System PAL SECAM NTSC PAL60 5 Video Input RCA 1EA PAL SECAM NTSC AV gender jack 1EA Antenna AV1 AV2 Component 6 Head phone out RGB HDMI1 HDMI2 USB1 USB2 USB3 Component Gender 1 7 Component Input 1EA Y ppp 8 RGB Input RGB PC Analog D SUB 15PIN HDMI1 DTV PC support HDMI version 1 3 HDMI2 DTV Support HDCP 9 HDMI Input 4EA HDMIS DTV HDMI4 DTV RGB DVI Audio UR Input 10 Audio Input 3EA Component AV 11 SPDIF out 1EA SPDIF out 12 USB 3EA DivX HD For SVC download JPEG MP3 DivX HD 13 EthemetConnect1EA Ethernet Connect Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only 5 Component Video Input Y CR PR No Resolution H freq kHz V freq Hz Porposed 1 720 480 15 73 60 00 SDTV DVD 480i 2 720x480 15 63 59 94 SDTV DVD 48
37. Ch 60Hz 120Hz 240Hz Transmission Line 12 12 24 Bandwidth 0 84Gbps 1 68Gbps 1 68Gbps LGE Internal Use Only EPI Interface mini LVDS vs Comparison What to change HF mini LVDS LCM T con to S Driver IC HF mini FHD 10bit LVDS 60Hz 120 2 240Hz No of Signal 36 36 72 60pin 60pin 80pin Connector 26a 2ea 2ea Difficult to upgrade bandwidth limit Multiple number of wires needed for higher bandwidth FHD 120Hz EPI Embedded clock P to P Interface FHD 10bit EPI 60Hz 120Hz 240Hz 960ch 960ch 720ch No of Signal 12 12 32 Connector T o Better reliability on common noise No data skew Better EMI margin Lower cost Cable Connector Slim S PCB design 14mm gt 10mm helps slimmer TV FHD 120Hz Bandwidth Capability FHD 120Hz 10Bit 594Mbps 36Lines 1 65Gbps 12Lines FHD 240Hz 10Bit 594Mbps 72Lines 1 25Gbps 32Lines Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes EPI Interface mini LVDS vs EPI HF mini LVDS EPI Topology Lok 2 1 ECCERE a Yo BEX 998 9 Protocol 0157 Y Y lel l Iel Multi Drop Point to Point Features
38. In Stop After In Stop Red LED On is processed and after In Stop Red LED turns on within 3 sec Condition Power Only In the case of Power Only On Red LED turns Off Mode In the case of DC Off Red LED turns On E Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Introductions of GP4 Sensor Touch IC Manual of Touch Sensitivity ouch Sensitivity Setting KEY Touch THR 2 Once you correctly touch Touch button for more than 1 sec you 4 can see a Touch data while you keep touching the button 3 Keep in mind that you can only read the Touch data during touch Status Touch Key Threshold Level Ta 25 C 67 68 69 70 73 68 68 71 Sensitivity Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Introductions of GP4 Sensor Touch IC Touch EEPROM Register change with USB port File F Relay Register G Monitoring M I E i b eL eo oda Addr Addr Value Addr Value 00 a 00 00 00 o 7 00 oo 00 00 00 w o 00 LI Threshold address Register Version LL Company name LL Model Information Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 48 mmm 1 Write all of the address value Hex as a be
39. Inc All rights reserved Only for training and service purposes LGE Internal Use Only WIFI Built in Block diagram Arcadyan WN8522D ui MAC PHY Radio BCM43236KMLG USB Interfaces Power Table Chip I 5v RT8020 15 7 BCM43236KMLG ASM3053755T 5104 321 4mA 375 2mA Serial FLASH Total power 1 5785W Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes ont End witches 53755 5104 ASM3053755T 5104 arcadyan ANTO X 2G 5G Antenna ANT1 gt 2G 5G Antenna Arcadyan Technology Corporatio hlipz www arcadyan com LGE Internal Use Only WIFI Built ass y Specification Frequency Band Draft 802 11n Radio 2 4 GHz 802 11g Radio 2 4 GHz 802 11b Radio 2 4 GHz USA FCC Canada IC Europe ETSI Japan STD T66 STD 33 802 11a Radio 5 GHz 5 150 5 250GHz 5 725 5 8850GHz Operating Channels IEEE 802 11b g n compliant 11 channels US Canada 13 channels ETSI 14 channels Japan Transmit Power and Sensitivity TX Output Power Typical Meet emission standard llb 17 2dBm lig 14 2 dBm 54Mbps Each chain 13 2 dBm Each chain Rx Sensitivity Typical 69dBm at HT20 m7 2 4GHz 87dBm at HT20 m0 2 4GHz 69dBm at HT20 m7 5 0GHz 87dBm at HT20 m0 5 0GHz Modulation DBPSK 1Mbps DQPSK 2Mbp CCK S 5 11Mbps 2412 2462MHz Ch1 Ch11 2412 2
40. LIN AP Japan only Setting each model s Spec In case of LPB Tool OPT4 Power Type This tool is valid In case of LPB Tool OPT4 Power Type This tool is valid China ON Global Except china OFF Setting each Module LO ON MTK Off LGE Internal Use Only 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 Video error video lag stop fail tunning 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 No audio Normal video Wrecked audio discontinuation noise Function error No response in remote controller key 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 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 A Video error_ No video Normal audio A Video error_ No video Video lag stop A Video error_Color error
41. North Latin America http aic lgservice com Europe Africa http eic Igservice com Asia Oceania http biz Igservice com Life s Good LED LCD TV CHASSIS LD22E MODEL 42LS570S 570T 575S 575T 42LS570S 570T ZB 42LS575S 575T ZD CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL P NO MFL67360908 1202 REVO00 Printed in Korea 5 CONTENTS 2 SAFETY natn tata 3 SERVICING PRECAUTIONS SPECIFICATI ara RR 6 ADJUSTMENT INSTRUCTION aiae 10 SCREW ASSEMBLY WORKING GUIDE sess 18 BLOCK DIAGRAM sesssssseseeeee een nnn T ta tata sata sns ra nana 19 EXPLODED VIEW stata natn tn sata share nana 20 SCHEMATIC CIRCUIT DIAGRAM Copyright O 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
42. OTTOM Touch IC 2 ANSGOSQL Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only 2012Y IR Soft Touch LED Lighting Scenario Power LED Scenario 7E Spec HWS gu 12Y GP4 High L9 GP4 Mid MTK GP4 Low S7LR2 Power Power Light UI Delete compared with 11 Y GP3 model Indicator UI 11Y Carry Over Model 12Y same Power LED scenario process d gt Power Light UI Delete The way of 11 Soft Touch Ass y is used White LED Disable P Stand By condition to Red LED On After DC ON Red LED light Blinks twice and then Red LED is Off ower 9n Stand By condition to Red LED Off After DC ON Red LED light Blinks three times and then Red LED is Off P Without Blink Red LED On immediately But If the mode of Power Indicator UI is Stand By keep staying Red LED Off status 2 User Remote Condition p Sr When you put the remote Control button Red LED Blinks once GP4 Warm Red LED On stays and In the case of Set On Red LED turns Off e High Mid Low Stand by 2 Including DVR Ready model Japanese model 11 Power LED S ame re 3D mode Red LED Off Power On condition is identical as the 11 Factory 12Y LED Model Stand By On Red LED On Default 12 CCFL Model Stand By On Red LED On 3 Mode 11 Carry Over Model 5 5 Stand By On Red LED On Factory
43. OWER 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 POWER BOARD PIN voltage checking method C Audio error No audio Normal video Checking method in menu when there is no audio 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 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 e i symptom A Video error_No video Normal audio 2010 12 14 Revised Content Check White Balance value date A4 ALL MODELS EZ ADJUST Tool Option Tool Option2 Tool Option3 Tool Option4 Tool Option5 Too Tool Option White Balance R Gain G Gain B Gain Country Group ADC Calibration White Balance R Cut G Cut B Cut Test Pattern Backlight Reset ooo 10 11 P CO 11 20 Point WB 12 Test Pattern 13 Sub B C 14 Touch Sensitivity Setting 15 Ext Input Adjust Entry method
44. Resistance must be less than 0 1 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 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 c
45. Touch txt file based on the left 2 Make the file Filename Touch txt and move it to USB The outermost area Don t move it to any folder 3 Connect USB to TV and press button ADJ menu and then choose the touch sensitivity setting 4 Press button SIMPLINK Simply Link key and then you can see the OK Pop up 5 After that you check it the IR LED version on In start menu and verify it that the number of version is changed to what you want 10 F5 120 12 FF 13 92 15 78 16 6h 17 FF 18 2B wn LE 10 FF 1D FF 1E FF dr Fo 20 7F 22 23 08 2 co 25 90 26 FF 27 FF 28 FF 29 FF 28 w 2 DEA as ca 36 uc FE Value LGE Internal Use Only Introductions of 12 RF ass y Magic Remote control Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Remote RF Receiver Pairing Information Transmission Send to TV after Paired Static Calibration Data Bypass only Remote FW ver Save also in Receiver BD ADDR Save also in Receiver Pairing Information Transmission Sequence When it is paired the remote sends packets pairing success F W version BD ADDR to the receiver The receiver sends the pairing success packet to TV directly F W version and BD ADDR packets are just saved on the receiver The receiver sends F W ve
46. V MPEG2 4 DVB S 30 countries Germany Netherland Switzerland Hungary Austria Slovenia Bulgaria France Spain Italy Belgium Russia Luxemburg Greece Czech Croatia Turkey Moroco Ire land Latvia Estonia Lithuania Poland Portugal Romania Albania Bosnia Serbia Slovakia Beralus Supported satellite 22 satellites HISPASAT 1C 1D ATLANTIC BIRD 2 NILESAT 101 102 ATLANTIC BIRD 3 AMOS 2 3 THOR 5 6 IRIUS 4 EU TELSAT W3A EUROBIRD 9 EUTELSAT W2A HOTBIRD 6 8 9 EUTELSAT SESAT ASTRA 1L H M KR ASTRA 3 3B BADR 4 6 ASTRA 2D EUROBIRD 3 EUTELSAT W7 HELLASSAT 2 EXPRESS AM1 TURKSAT 2 3 INTERSAT10 Copyright 2012 LG Electronics Inc All rights reserved 6 LGE Internal Use Only Only for training and service purposes Item Specification Remarks DVB S Satellite 2 Broadcasting system DVB C DVB T2 DVB S gt DVB T Guard Interval Bitrate Mbit s 1 4 118 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 1 4 1 8 1 16 1 32 1 128 19 128 19 256 Modulation Code Rate QPSK 1 2 2 5 2 3 3 4 5 6 Aralog pper Hetesodyne 16 QAM 1 2 2 5 2 3 3 4 5 6 08 64 QAM 1 2 2 5 2 3 3 4 5 6 3 Receiving system Digital COFDM QAM 256 QAM 1 2 213 ald 56 gt DVB
47. Ver 27992 24478 i DEGO LL S11 J00000 POWER OFF MODE checking method DC Data ver Off System 1 System 2 System 3 Number D L est Option e Spectrum Sync Level 11 Stable Count 12 SDP Server Selection 13 Network Error History 14 RF Remocon Test 15 Access Code Entry method Revised date Power EF POWER OFF BY REMOTE KEYI ACDET LOFF BY REMOTE KEY1 11 POWER OFF BY ACDET 12 POWER OFF BY ACDET 13 POWER OFF BY ACDET 14 POWER OFF BY ACDET 15 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 a POWER OFF BY REMOTE KEY 77 POWER OFF BY REMOTE KEY 2 POWER OFF BY ON TIMER 4 POWER 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 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail Technical Manual Error Established symptom C Audio error_No audio Normal video ste 2010 12 14 Content Checking method in menu when there is no audio 24 lt ALL MODELS gt Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes
48. c All rights reserved Only for training and service purposes Perm 6 USB S W Download Service only 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 Download Version High amp Power only mode Set is automatically Download 3 Show the message Copying files from memory TV Software Upgrade Expert Copy the file from the Memory Do not remove the USB from the Do not unplug 4 Updating is starting Scan Upgrade COMPLETED TheTV lea nma e Bh Wsetuare Upate UPGRADING 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 Option 1 and push OK key 3 Punch in the number Each model has their number LGE Internal Use Only SCREW ASSEMBLY WORKING GUIDE Screw specification and application situation FAB31339402
49. ce purposes Appendix Exchange the Module 2 Vertical Block Vertical Line Vertical Block Source TAB IC Defect Source TAB IC Defect Source TAB IC Defect Horizontal Block Horizontal Block Horizontal line Gate TAB IC Defect Gate TAB IC Defect Gate TAB IC Defect Un repairable Cases In this case please exchange the module Horizontal Block Gate TAB IC Defect 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 symptom B Power error No power Established date 2010 12 14 Revised date Content Check front display LED Remote control and intelligent sensors Power indicator OKG HOME INPUT VE Touch buttons v v 17 or Indicator 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 onion B Power error No power Established date 2010 12 14 Revised Content Check power input voltage and ST BY 5V SED A18 For 10 models there is no voltage out for st by purpose When st by only 3 5V is normally on Check the DC 20V 24V 12V 3 5V Power on 24V GNO GNO 3 5V 3 5V GND GNO GND GND
50. date 2010 12 14 Content LCD TV Version checking method lt ALL MODELS gt Revised date 1 Checking method for remote controller for adjustment IN STAR Model Name GLOBAL PLATA Serial Number SKJY1107 S W Version MICOM Version BOOT Version B IR LED Version Version PWM min max 3DDut EDIDIRGB HDMI Chip Type Wi Fi Version Wi Fi Channel Wi Fi MAC MAC Address IP Address Widevine ESN Num j RF Receiver Version 00 00 ADemodF WVer Null D Demod F W Ver z Null Debug Status N USB Status 0 0 7 0 C 1 Adjust Check 2 ADC Data 3 Power Off Status 4 System 1 5 System 2 6 System 3 7 Model Number D L 8 Test Option 9 Spread Spectrum 10 im Level 11 Stable Count 12 SDP Server Selection 13 Network Error History 14 RF Remocon Test 15 Access Code 5 5 Press the IN START with the remote 3234 controller for adjustment d 1 Country Group A Country Group Code Country Group Country 2 Tool Opfion Tool Option Tool Option2 Tool Option3 Tool Option4 Tool OptionS Tool Option amp Tool Option 3 Adjust White Balang 4 Adjust ADC OTP 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 2040 12 44 symptom residual image light spot date
51. echnical Manual Error Y LCD TV symptom D VCOM Adjustment SUA erp qaa Content Sequence of the Vcom adjustment 28 1 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 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 Wi Press the exit key to finish V COM adjustment V Com Saving OK T Press to save Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only
52. ected pin 27 DVB S2 LNB Part Allegro cm cup ana are connected e Option LNB peer mmm mm mM Mm eM wm em eM eM wm ew em ee ee eK input trace widths should be sized to conduct at least 22 trace widths should be sized to conduct at least 2a SERVICING IF IS MODEL DATE ATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL M OF THE SCHEMETIC ic HERNES O 1 LGE Internal Use Only Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes FOR COMMERCIAL 12V OUT RS 232C 9 PIN OPT COMMER EXT 12V 100 COMM LO OUT JACK ER _ 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 LGE Internal Use Only
53. el meter By using Diagnostics menu on OSD 4 Menu Set up Support gt 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 Box Different maker TV etc N AT W Menu Setup Booster Check RF Cable A N Connection Normal Y Check lt sve UN Booster menu Normal _Y 1 Reconnection lt gt icture2 5i S Bulletin On Off Check S Picture Close 2 Install Booster di nod n 7 e djs Off On Check ug N M Y 1 Ke Y P n S W Upgrade Check _ Normal Contact with signal distributor pa Tuner soldering N Picture or broadcaster Cable or Air PO Tert Normal gt N lt 1 A Main B D Aa s J Close Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process A Picture Problem DVB S S2 2011 01 24 symptom pul Tuning fail Picture broken Freezing Revised date 3 13 f Check RF signal cable DVB satellite signal or not Check whether other equipments have problem or Check RF Signal level By connecting RF Cable at other equipment
54. ent completed wb 00 20 Offset adjustment internal white pattern wb 00 2f Offset adjustment completed IEXEN C auarnert Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes 14 Ex wb0000 gt Begin white balance auto adj wb00 10 gt Gain adj ja 00ff gt Adj data jb 00 cO wb 00 1 Gain adj completed wb 00 20 Start wb 00 2f end Off set adj wb 00 ff End white balance auto adj Adj Map Win Command DataRange Default Jl e lower caseASCII Hex Decimal CMD1 CMD2 MAX RGan i g o0 co GGan i h 00 co coo BOW i i 00 co R Cut G Cut B Cut RGan a co GGan i b 00 co BGai j c 00 co Medi edum Rut G Cut B Cut RGan i d 00 co GGain j e 00 co Wam BGan T o0 co R Cut G Cut 4 2 5 Adj method 1 Auto adj method 1 Set TV in adj mode using P Only key 2 Zero calibrate probe then place it on the center of the Display 3 Connect Cable RS 232C to USB 4 Select mode in adj Program and begin adj 5 When adj is complete OK Sign check adj status pre mode Warm Medium Cool 6 Remove probe and RS 232C cable to complete adj W B Adj must begin as start command wb 00 00 and finish as end command wb 00 ff and Adj offset if need 2 Manual adjustment method 1 Set TV in Adj mode u
55. er B D don t have problem If R C operate Normals Explain the customer operating Close cause is interference from light in room N Replace R C Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process D Function error Spe 2010 12 14 Error symptom External device recognition error Revised date 1143 Check Check technical s Fixinform tion Replace Main B D signal Fix information information S W Version Replace Main B D DVI Optical Recognition erro Fix in accordance with technical information Check and fix external device cable LGE Internal Use Only Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes Standard Repair Process Identify nose type E Noise Error Established date 2010 12 14 symptom Circuit noise mechanical noise Revised date Replace PSU with LED driver Check location of oR noise Replace LED driver Check location of noise 3 Mechanical noise is a natural phenomenon and apply the 1st level description When the customer does not agree apply the process by stage Describe the basis
56. for external device cable FS A N RGB Check external External device Y gt lt HDMI DVI gt device and lt Cable 2 Replace Main B D error cable N P Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process A Video error Established Error date 2010 12 14 symptom Vertical Horizontal bar residual image light spot external device color error Revised date 5 13 Vertical Horizontal bar residual image light spot Replace Module A8 em P Re A10 A11 A N heck color condition by input Check external External Input ecreen device FA Y Be Screen Screen Component normal connection Normal Top ace Linc normat ormal NU condition NU NA 4 HDMI DVI N N y For LGD panel Y R i Replace Main B D Replace equest repair A12 module for external x ur device Check Test pattern For other panel External device screen error Color error Check screen 29 S condition by input LN External Input ternal N ee At Component KC input Connect other external N NSO RGB error device and cable Screen Replace HDMI DVI NA Check normal operation of Roney Main B D Y
57. for training and service purposes 2 Check the key download for transmitted command RS232 00 10 CMD 1 CMD2 Data 0 0 3 Result value Normally status for download OKx Abnormally status for download NGx 3 6 2 Check the method of Cl key value RS232 1 Into the main ass y mode RS232 aa 00 00 CMD 1 CMD 2 Data 0 A A 0 0 2 Check the mothed of Cl key by command RS232 ci 00 20 CMD1 CMD2 Data 0 c 2 0 3 Result value 101 OK 1d1852d21ctedSdcx L Cl Key Value 3 7 WIFI MAC ADDRESS CHECK 1 Using RS232 H freq kHz V freq Hz Transmission 05 10 0 200 or ING 12 2 Check the menu on in start LEF S2173 LGE Internal Use Only 4 Manual Adjustment ADC adjustment is not needed because of OTP Auto ADC adjustment 4 1 EDID The Extended Display Identification Data DDC Display Data Channel download 4 1 1 Overview Itis a VESA regulation A PC or a MNT will display an optimal resolution through information sharing without any necessity of user input It is a realization of Plug and Play 4 1 2 Equipment Since embedded EDID data is used EDID download JIG HDMI cable and D sub cable are not need Adjustment remote control 4 1 3 Download method 1 Press ADJ key on the Adjustment remote control then select 10 EDID D L By pressing Enter key e
58. gt External Input Component mponent RGB and HDMI DVI by S W Upgrade connecting Jig pattern Y Generator Set top Box etc Request repair for 558 external device 4 s Connect other external orma N device and cable _ NH creen x Check normal operation of Screen Replace 7 Vax External Input Component ormai gt Main B D HDMI RGB and HDMI DVI by C Du 2 connecting Jig pattern V Now 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 B Power error Established date 2010 12 14 symptom A17 No power Revised date A19 A ee formal Check Power 2 Y E ea On High peor p BD 6 13 A Replace 2 Power N Replace Main B D Replace Main B D Ss DC Pi Check Power L Y gweron Power LED by pressing Power Key 7 On Remote control Stand By Red NI Operating white Check Power cord was inserted properly AA i Y S N Measure voltage of each output of Power ine D gt T Korma S Y gt Pd voltage close ee Check ST BY 3 5V formal a N V Y Y Replace Power B D Replace Power B D Copyright 2012 LG Electronics Inc All rights reserved Only for training and service pur
59. ics Revised Content LCD TV connection diagram 1 date 8 lt ALL MODELS gt POMC CARO MoT 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 symptom A Video error_Video error video lag stop Established 2010 12 14 Revised Content TUNER checking part aie AQ lt ALL MODELS gt 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 A Video error_Color error Established LCD TV symptom date 2010 12 14 Content Adjustment Test pattern ADJ Key iru ANB _ EZ ADJUST Tool NE 1 Tool Option3 i 050 Tool Option4 Tool B i Tool Option6 Tool Option7 Country Group ADC Calibration Test Pattern White Balance TT fed poo 10 014 CO 2 oint WB S Test Pattern 15 Sub B C Touch Sensitivity Setting Ext Input Adjust Test Pattern Patter Control Press 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 2012 LG Electronics
60. ig Normal signal N Noise only gt gt Replace Main B D N d for D TV Wrecked 3udio A E OS Replace Power B D SS 4 Tor Analog When PF signal is not __ received Request repair to external Wr cked a dio Replace Main B D cable ANT provider Discontinuation N Noise only In case of External for amp xternalJnout v Input signal error Connect check Normal Check and fix other external device audio external device yr Check and fix external device Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process i Established Error D General Function Problem a 2010 12 14 LCD TV symptom i 1 Remote control amp Local switch checking Revised date 10 13 1 Remote control R C operating error Replace Main B D AST A27 gt A27 Normal D eens Normal N Check B 3 5V _ Normal Check IR Norma I ing ing i Signal operating Connect colicin operating On Main B D Voltage Output signal Signal __ ty N oN Y Y 4 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 lt Replace Power B D or IR B D in room up Replace Main B D P an Pow
61. ll rights reserved Only for training and service purposes 16 4 8 LNB voltage and 22KHz tone check only for DVB S S2 model Test method 1 Set TV in Adj mode using POWER ON 2 Connect cable between satellite ANT and test JIG 3 Press Yellow key ETC SWAP in Adj Remote control to make LNB on 4 Check LED light ON at 18 V menu 5 Check LED light ON at 22 KHz tone menu 6 Press Blue key ETC PIP INPUT in Adj Remote control to make LNB off 7 Check LED light OFF at 18 V menu 8 Check LED light OFF at 22 KHz tone menu Test result 1 After press LNB On key 18 V LED and 22 KHz tone LED should be ON 2 After press LNB OFF key 18 V LED and 22 KHz tone LED should be OFF 4 9 Option selection per country 4 9 1 Overview Option selection is only done for models in Non EU 4 9 2 Method 1 Press ADJ key on the Adj R C then select Country Group Meun 2 Depending on destination select Country Group Code 04 or Country Group EU then on the lower Country option select US CA MX Selection is done using or gt lt 4 key 4 10 Tool Option selection Method Press ADJ key on the Adjustment remote control then select Tool option 4 11 Ship out mode check In stop After final inspection press IN STOP key of the Adjustment remote control and check that the unit goes to Stand by mode LGE Internal Use Only 4 12 GND and Internal Pressure check 4 12 1 Method 1 GND
62. mbly 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 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 h
63. minutes prior to the adjustment when module is in the circumstance of over 15 In case of keeping module is in the circumstance of 0 C it should be placed in the circumstance of above 15 C for 2 hours In case of keeping module is in the circumstance of below 20 C it should be placed in the circumstance of above 15 C for 3 hours Caution When still image is displayed for a period of 20 minutes or longer Especially where W B scale is strong Digital pattern 13ch and or Cross hatch pattern 09ch there can some afterimage in the black level area 3 Automatic Adjustment 3 1 ADC Adjustment 3 1 1 Overview ADC adjustment is needed to find the optimum black level and gain in Analog to Digital device and to compensate RGB deviation 3 1 2 Equipment amp Condition 1 USB to RS 232C Jig 2 MSPG 925 Series Pattern Generator MSPG 925FA pattern 65 Resolution 1080P Comp1 1920 1080 RGB Pattern Horizontal 100 Color Bar Pattern Pattern level 0 7 0 1 Vp p Image Copyright O 2012 LG Electronics Inc All rights reserved Only for training and service purposes 10 3 1 3 Adjustment 1 Adjustment method Don t need to adjust ADC because there is data in and adjusted initially Check ADC adjustment 1 Press In start key on the Adj Remote Control then Adjust ADC OTP status is displayed on 1 Adjustment check Select 2 ADC Data then ADC data is displayed 2 Press
64. n status except listed case Ab POWEROFF ABNORMAL1 Power off by abnormal status except CPU trouble normal FPOWEROFF_CPUABNORMAL Power off by CPU Abnormal Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes Standard Repair Process Error C Audio error LCD TV symptom Established date 2010 12 14 No audio Normal video Revised date A24 N No audio Check user Screen normal menu gt Off Speaker off N Cancel OFF 1425 a Check audio B 24V MormaN Y of Power Board voltage Nu Replace Power Board and repair parts disconnection Check Speaker isconnectior Replace MAIN Board gt b Replace Speaker 8 13 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process C Audio error eeu 2010 12 14 Error symptom Wrecked audio discontinuation noise Revised date 9 13 abnormal audio discontinuation noise is same after Check input signal compared to No audio Pat wa A25 Wrecked audio gt Discontinuation Check audio Noise for B Voltage 24V Check input A all audio 1 soe Signal b M x Y External Input Normal Wehea ad
65. ndling 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 asse
66. nter EDID D L menu 2 Select Start button by pressing Enter key HDMI1 HDMI2 HDMI3 HDMI4 RGB are writing and display OK or NG For Analog For HDMI EDID D sub to D sub DVI D to HDMI or HDMI to HDMI 4 1 4 EDID DATA 1 EDID DATA Copyright 2012 LG Electronics Inc All rights reserved 13 Only for training and service purposes Reference HDMI1 HDMI4 RGB In the data of EDID bellows may be different by S W or Input mode amp Product ID HEX EDID Table DDC Function 0001 0100 Analog Digital Serial No Controlled on production line Month Year Controlled on production line ex Week 01 gt 01 Year 2012 gt 16 fix Model Name Hex LGTV Chassis MODEL NAME HEX LD22E 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 Checksum Changeable by total EDID data 1 2 HDMI1 43 15 x HDMI2 43 05 X HDMI3 43 F5 X HDMI4 43 X RGB X 5 Vendor Specific HDMI INPUT MODEL NAME HEX 67 03 0C 00 10 00 80 2D HDMI2 67 03 0C 00 20 00 80 2D HDMI3 67 03 0C 00 30 00 80 2D HDMI4 67 03 0C 00 40 00 80 2D LGE Internal Use Only 4 2 White Balance Adjustment 4 2 1 Overview WIB adj Objective amp How it works 1 Objective To reduce each Panel s W B deviation 2 How it works When R G B gain in OSD is at 192 it means
67. of the description in Part related to nose in the Owner s Manual OR 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 12 13 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only Standard Repair Process F Exterior defect Error Established date 2010 12 14 Symptom Exterior defect Replace module Revised date Adjust VCOM N Zoom part with 2 exterior damage T damage V A mote damag A28 Cabinet gt damage gt Replace cabinet ControlleP Replace remote controller 4 Stand dent Replace stand Sv 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 P
68. 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 Bo 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
69. ontacts 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 p gt bul o A 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 ha
70. osed 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 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 10 watt resistor in parallel with 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 Good Earth Ground such as WATER PIPE CONDUIT etc To Instrument s exposed METALLIC PARTS 0 15 uF 1 5 Kohm 10W When 25 is impressed between Earth and 2nd Ground for 1 second
71. poses LGE Internal Use Only Standard Repair Process Established date Error B Power error symptom Check outlet 34 Off when on off while viewing power auto on off Revised date 7 13 A wr A22 fn N SY Check cord gt lt Error uer bur CPU gt Replace Main Normal Abnormal N f M NS N A N Check for all 3 phase iorm l Replace Power B D Nu Jl Fix A C cord amp Outlet eacha If Power Off mode is VAN not displayed forma Y yf Check Power B D voltage Replace Main B D voltage MC Caution Check and fix exterior af Power B D Part Replace Power B D Please refer to the all cases which Status Power off List Explanation can be displayed on power off mode POWEROFF REMOTEKEY Power off by REMOTE CONTROL P 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 POWEROFF RESREC Power off by Reservated Record POWEROFF RECEND Power off by End of Recording POWEROFF SWDOWN Power off by S W Download POWEROFF UNKNOWN Power off by unknow
72. pyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes DSUB_R DSUB G DSUB IRPGPMBP t IVSYNC HSYNC DSUB VSYNC DSUB HSYNC LGE Internal Use Only GP4 Backend block diagram EPI amp T con VDD vec CTRLP Main SoC MTK EO SOC TCON6 GST soc MCLK SOC GCLK_SOC meong 47 z Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes 50Pin EPI LEFT E 9 m 1C7700 TPS65178 gt o 5 E z E a gt a 8 veom ar net i gt Ros ot gt EO OPT GST ODD VGH EVEN Qj 1 7701 VGH_R VGH F VST 4 GCLK TPS65198 cuire gt 08 yg 50Pin EPI RIGHT LGE Internal Use Only GP4 Backend block diagram EPI amp T Con TXAIN P TXACLKN P TXA4N P VCOMLFB VCOM DYN Main SoC PMIC RESET E o 3l ain so IOPCTRLI 2 SDA2 17700 4 5 7 12 15 ____ gt MTK OPCTRL10 lec Sci TPS65178 e Cs EPI LOCK6 SOURCE L p EPI 1 6 VCOMRFB TXAON P TXBIN P TXB2N P CH4 5 6 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes
73. reless HD Specification Option Each part is tested as below without special appointment 1 Temperature 25 C 5 C 77 F 9 F CST 40 C 5 2 Relative Humidity 65 10 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 No Item Specification Remarks DTV amp Analog Total 37 countries DTV MPEG2 4 DVB T 30 countries Germany Netherland Switzerland Hungary Austria Slovenia Bulgaria France Spain Italy Belgium Russia Luxemburg Greece Czech Croatia Turkey Moroco Ire land Latvia Estonia Lithuania Poland Portugal Romania Albania Bosnia Serbia Slovakia Beralus DTV MPEG2 4 DVB T2 7 countries UK Sweden Denmark Finland Norway Ukraine Kaza khstan Ireland DTV MPEG2 4 DVB C 37 countries Germany Netherland Switzerland Hungary Austria Slovenia Bulgaria France Spain Italy Belgium Russia Luxemburg Greece Czech Croatia Turkey Moroco Ire land Latvia Estonia Lithuania Poland Portugal Romania 1 Market EU PAL Market 36Countries Albania Bosnia Serbia Slovakia Beralus UK Sweden Denmark Finland Norway Ukraine Kazakhstan DT
74. rsion BD ADDR packet to TV when it is required Motion Data Transmission Period 7 5msec Motion Data gyro accelerometer Voice Data Transmission Period 10msec Voice sampling 16khz 16bit gt See 6 2 Packets on page 8 Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes 2 Remote Buttons vs M4 BUTTON RF Unpaired RF Paired IR continuous ETC IR_CODE RF_CODE repeat POWER 0x08 0x08 Y IR only BACK 0x28 0x8028 Y HOME Ox7C 0x807C Y lt 0 07 0 8007 Y 0x06 0x8006 Y ii 0x40 0x8040 Y i 0x41 0x8041 Y Phsical OK 0x75 0x8044 Y Buttons CH 0x00 0x8000 Y CH 0x01 0x8001 Y VOL 0x02 0x8002 Y VOL 0x03 0x8003 Y MUTE 0x09 0x8009 Y 3D Mode OxDC Ox80DC Y MyAPPS 0x42 0x8042 Y VOICE 0x800A Y VOICE START AUTO WAKEUP X 0x800C VOICE START X 0x800A Logical Buttons VOICE_STOP X 0x800D POINT START X 0x803E M3 Remote M4 Remote PONT SOP x OB 05 Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes 3 M4 Block Diagram 3050 Invensense LIS331DLH Accel STMicro 256Kbit EPROM Key Button 4x5 BCM20733M BROADCOM Bluetooth 3 0 WM8950 Wolfson AA x 2 Battery DC DC 2 8V LDO Power Management
75. sing P Only key 2 Zero Calibrate the probe of Color Analyzer then place it on the center of LCD module within 10 cm of the surface 3 Press ADJ key EZ adjust using adj R C 7 White Balance then press the cursor to the right key gt When right key P is pressed 216 Gray internal pattern will be displayed 4 One of R Gain G Gain B Gain should be fixed at 192 and the rest will be lowered to meet the desired value 5 Adjustment is performed in COOL MEDIUM WARM 3 modes of color temperature If internal pattern is not available use RF input In EZ Adj menu 7 White Balance you can select one of 2 Test pattern ON OFF Default is inner ON By selecting OFF you can adjust using RF signal in 216 Gray pattern LGE Internal Use Only Adjustment condition and cautionary items 1 Lighting condition in surrounding area Surrounding lighting should be lower 10 lux Try to isolate adj area into dark surrounding 2 Probe location Color Analyzer CA 210 probe should be within 10 cm and perpendicular of the module surface 80 100 3 Aging time After Aging Start Keep the Power ON status during 5 Minutes In case of LCD Back light on should be checked using no signal or Full white pattern 4 2 6 Reference White balance adjusmtment coordinate and color temperature Luminance 204 Gray Standard color coordinate and temperature using CS 1000 over 26 inch Mode Coordinate Temp Auv x
76. t X RADIATION Shock Fire or other Hazards Do not modify the original design without permission of manufacturer ED i Set Stand Stand Base Body Copyright O 2012 LG Electronics Inc All rights reserved 20 LGE Internal Use Only Only for training and service purposes EAX6430790 LD22 LC22 EAX6443420 LT22 LJ22 LA22 LB22 MID MAIN 1 5 ELECTRON Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes DATE SHEET 0 1 i 4 Fe ps aa qd 4 j ee en e OR OL I9 QUII IN emm Lip 1 i 1 RH TN 1 125 ot Hi te 4 DM i pe pne E 1 8 i 1 1 TN 1 Hehe pen 1 1g 1 mo 0 1 D 14 1 1 1 1 1 1 1
77. the path of the out away copper pattern and let it overlap the previously scraped end of the good copper pattern Solder the overlapped area and clip off any excess jumper wire At Other Connections Use the following technique to repair the defective copper pattern at connections other than IC Pins This technique involves the installation of a jumper wire on the component side of the circuit board 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 LD22E 1 Performance LGE TV test method followed chassis 2 Demanded other specification Safety CE IEC specification EMC CE IEC 2 Requirement for Test Wireless Wi
78. use RS 232 Must check the serial number at Instart menu 3 5 2 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 It 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 5 Model Number D L like below photo 3 Input the Factory model name ex 47LM760S ZB A or Serial number like photo 7 Dm 4 Check the model name Instart menu Factory name displayed ex 47LM760S ZB 5 Check the Diagnostics DTV country only Buyer model displayed ex 47LM760S ZB 3 6 Cl Key checking method Check the Section 3 2 Check whether the key was downloaded or not at In Start menu Refer to below gt Check the Download to Cl Key value in LGset 3 6 1 Check the method of Key value 1 Check the method on Instart menu 2 Check the method of RS232C Command 1 Into the main ass y mode RS232 aa 00 00 CMD 1 CMD2 Data 0 A A 0 0 Copyright O 2012 LG Electronics Inc All rights reserved Only
79. uthentication Key which is formed as a result of authentication and used to protect the exchange keys Exchage Key which is used to set up and protect content streams eContent Key which is used to encrpt the content being exchanged Copyright 2012 LG Electronics Inc All rights reserved LGE Internal Use Only Only for training and service purposes 4 Changed BOM As Was zy Input Format Model Info Platform Ex GPIR GP2 Startrek Main IC Ex 3549 Model Data Too Optiont R AreaCode Tool Option2 2 Country Group Tool Option3 Country Tool Options 7 re Option Tool Options Tool Option6 Function Model SN Write Wedevine CI Download Buit n Wifi MAC Address DVB S ESN Download Wasu 7 Cl Yes EU Model S TLA eren 37 Wasu Yes China Smart TV Ony S PUU ray ETC Additional Info cancel Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes Current Model Info Platform era x cris Gea santek Hain 1 mss 19 MT Uf Model Data Tool optiont pasez Country Group zu ow Tool Option Ind Country Tool options areacodeoroption Tool Options Tool Options aad Tool Options 2 eol Option Commercial Tool option Function Model Sti Write re Widevine CI Download res Built tn wifi MAC Address Yes ESN Download yes

LG Electronics 37LD345H Flat Panel Television User Manual

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