LG 32LM620T Service Manual Download Page 108

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Abnormal Power Section

Solder defect, Short/Crack

Abnormal Power Section

Solder defect, Short/Crack

Fuse Open, Abnormal power section

Noise

GRADATION

Abnormal Display

Appendix : Exchange T-Con Board (2)

Only for training and service purposes

LGE Internal Use Only

Summary of Contents for 32LM620T

Page 1: ... 669T MODEL 42LM660S 660T ZA 42LM669S 669T ZC CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL LED LCD TV SERVICE MANUAL North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only ...

Page 2: ...ll rights reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 10 SCREW ASSEMBLY WORKING GUIDE 18 BLOCK DIAGRAM 19 EXPLODED VIEW 20 SCHEMATIC CIRCUIT DIAGRAM ...

Page 3: ...inals 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 m...

Page 4: ...lectrostatic 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 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent...

Page 5: ...he solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch at stake top 3 Solder the connections CAUTION Maintain original spacing between the replace...

Page 6: ...V 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...

Page 7: ...e 4 0Msymbols s to 7 2Msymbols s Modulation 16QAM 64 QAM 128 QAM and 256 QAM DVB S S2 symbolrate DVB S2 8PSK QPSK 2 45Msymbol s DVB S QPSK 2 45Msymbol s viterbi DVB S mode 1 2 2 3 3 4 5 6 7 8 DVB S2 mode 1 2 2 3 3 4 3 5 4 5 5 6 8 9 9 10 4 Scart Gender Jack 1EA PAL SECAM Scart jack is Full scart and support MNT DTV OUT not support DTV Auto AV 5 Video Input RCA 1EA PAL SECAM NTSC 4 System PAL SECAM ...

Page 8: ...5 00 50 00 HDTV 720p 8 1280 720 44 96 59 94 HDTV 720p 9 1280 720 45 00 60 00 HDTV 720p 10 1920 1080 31 25 50 00 HDTV 1080i 11 1920 1080 33 75 60 00 HDTV 1080i 12 1920 1080 33 72 59 94 HDTV 1080i 13 1920 1080 56 250 50 HDTV 1080p 14 1920 1080 67 5 60 HDTV 1080p No Resolution H freq kHz V freq Hz Proposed 1 640 x 350 70Hz 31 468 70 09 EGA 2 720 x 400 70Hz 31 469 70 08 DOS 3 640 x 480 60Hz 31 469 59 ...

Page 9: ...20 1080 28 125 50 00 HDTV 1080I 9 1920 1080 26 97 27 23 97 24 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 No Resolution H freq kHz V freq Hz Proposed 1 640 x 350 70Hz 31 468 70 09 EGA 2 720 x 400 70Hz 31 469 70 08 DOS 3 640 x 480 60Hz 31 469 59 94 VESA VGA 4 800 x 600 60Hz 37 8...

Page 10: ...o find the optimum black level and gain in Analog to Digital device and to compensate RGB deviation 3 1 2 Equipment 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 3 1 3 Adjustment 1 Adjustment method Don t need to adjust ADC because there is data ...

Page 11: ... Jig 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 3 3 3 WIDEVINE key Inspection Confirm key input data at the IN START MENU Mode 3 4 LAN PORT INSPECTION PING TEST Connect SET LAN port PC LAN Port 3 4 1 Equipment setting 1 Play the LAN Port...

Page 12: ...er D L like below photo 3 Input the Factory model name ex 47LM760S ZB A or Serial number like photo 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 CI Key checking method Check the Section 3 2 Check whether the key was downloaded or not at In Start menu Refer to below Check the Download to C...

Page 13: ...le by total EDID data ⓕ Vendor Specific HDMI 1 Deep color module 10bit 2 None deep color module 8bit ⓖ Colorimetry Data Block HDMI The Model supporting XvYcc LM7600 For Analog For HDMI EDID D sub to D sub DVI D to HDMI or HDMI to HDMI HEX EDID Table DDC Function 0001 01 00 Analog Digital Chassis MODEL NAME HEX LD22E 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 INPUT MODEL NAME HEX HDMI1 7...

Page 14: ...rogram 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 using P Only key 2 Zero Calibrate the probe of Color Analyzer then place it on the center of LCD module w...

Page 15: ... wait for 6 seconds 6 Confirm that ok pop up If change is not seen replace Eye Q II sensor 4 4 Local Dimming Function Check Step 1 Turn on TV Step 2 Press TILT key on the Adj R C 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 4 5 Magic Motion Remote control test 1 Equipment RF R...

Page 16: ...mote 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...

Page 17: ...ve 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 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 ...

Page 18: ...t If C Screw is used at the A part Module will get damaged SCREW ASSEMBLY WORKING GUIDE ח ͷͲͳ ͽ ͳͼ ΒΔΙΚΟΖ ח ͶͲ FAB30013202 M3 L8 White Taptite 4EA ח ͷͲͳ ͽ ͳͼ ΒΔΙΚΟΖ ח ͶͲ E E E E E E E E ח ͷͲͳ ͽ ͳͼ ΒΔΙΚΟΖ ח ͶͲ A A A A A A A A A A A A B C C C C ח ͷͲͳ ͽ ͳͼ ΒΔΙΚΟΖ ͶͲ B B B A A A A D D D D A A A A A A A A A A A A A A A A A A A A A A A A B B C C C C C C C C ח ͷͲͳ ͽ ͳͼ ΒΔΙΚΟΖ ͶͲ B B B B B B A A A A A A A...

Page 19: ... 2Gb HDMI1 HDMI2 HDMI3 Side Rear RGB H V Ethernet CVBS UART SYSTEM EEPROM X 1 256Kb HDMI MUX HDCP EEPROM M Remote Module Air Cable TUNER T C TUNER S2 DIGITAL DEMOD T C DVB S ANALOG DEMOD DIGITAL DEMOD S2 TS_S P sui USB2 USB3 HDMI4 eMMC X 1 2GB USB_WIFI SYSTEM DDR3 X 1600 X 16 2Gb DDR CONTROLER A B SPI LOCAL DIMMING I2C Sub Micom RENESASA IR Remote Control SYSTEM DDR3 X 1600 X 16 2Gb SYSTEM DDR3 X ...

Page 20: ...l Play Option EXPLODED VIEW 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 X RADIATION Shock Fire or other Hazards Do not modify the original de...

Page 21: ..._STB AH26 AVDD33_VGA_STB AK18 AVSS33_VGA_STB AK17 AVDD33_PLLGP AK23 AVSS33_PLLGP AM27 AVDD10_LDO AJ20 GPIO0 H32 GPIO1 F37 GPIO2 F36 GPIO3 G37 GPIO4 G36 GPIO5 G35 GPIO6 G34 GPIO7 H34 GPIO8 L34 GPIO9 L32 GPIO10 K33 GPIO11 K32 GPIO12 H33 GPIO13 L35 GPIO14 K36 GPIO15 J32 GPIO16 J34 GPIO17 K34 GPIO18 K35 GPIO19 K37 GPIO20 J36 GPIO21 J37 GPIO22 J35 GPIO23 J33 GPIO24 G33 GPIO25 H35 GPIO26 H31 GPIO27 F34 ...

Page 22: ...LKN TXBCLKP COMP1_Y TP344 TP361 R349 0 OPT HP_LOUT CI_A_VS1 DSUB_R COMP1_Pb_SOC CI_CD2 TP327 TP364 TP369 TXA3P TXB2N TXB3N C342 100pF 50V TP333 MT5369_TS_IN 3 C339 560pF 50V OPT R325 2K OPT R302 180 C352 0 01uF TXC3N PC_R_IN_SOC DSUB_B R364 100 DSUB_HSYNC_SOC TXD4P TP354 C396 33pF OPT 5V_NORMAL TXD1N C306 0 1uF MODEL_OPT_10 2D 3D_CTL MODEL_OPT_2 PCM_5V_CTL EMMC_RST MODEL_OPT_8 MODEL_OPT_9 VCOM_DYN...

Page 23: ...4 U21 DVSS_93 V21 DVSS_105 W21 DVSS_118 Y21 DVSS_128 AA21 DVSS_138 AB21 DVSS_64 R22 DVSS_75 T22 DVSS_85 U22 DVSS_94 V22 DVSS_106 W22 DVSS_119 Y22 DVSS_129 AA22 DVSS_139 AB22 DVSS_65 R23 DVSS_76 T23 DVSS_86 U23 DVSS_140 AB23 DVSS_96 W6 DVSS_30 G17 DVSS_27 F25 DVSS_109 Y6 DVSS_17 E21 DVSS_25 F21 DVSS_45 L8 DVSS_66 T7 DVSS_7 D11 DVSS_14 E11 DVSS_8 D12 DVSS_18 E22 DVSS_26 F22 DVSS_33 G25 DVSS_136 AB19...

Page 24: ...601 470K OPT SC_R SCART_Rout R618 15K EU DTV MNT_V_OUT_SOC R605 75 1 EU TU_CVBS R608 75 1 EU C612 0 01uF EU SC_COM_SOC SC_CVBS_IN_IF SC_L_IN SCART_Lout_SOC R623 100 EU DTV MNT_V_OUT SC_G_SOC R619 15K EU R602 470K OPT C610 10uF 16V EU C611 10uF 16V EU C603 330pF 50V OPT C602 330pF 50V OPT R600 EU 0 TP600 C600 220pF OPT C617 220pF OPT R627 330pF 50V EU R603 330pF 50V EU 12V R630 100K OPT R631 100K O...

Page 25: ... K2 VDD_5 K8 VDD_6 N1 VDD_7 N9 VDD_8 R1 VDD_9 R9 VDDQ_1 A1 VDDQ_2 A8 VDDQ_3 C1 VDDQ_4 C9 VDDQ_5 D2 VDDQ_6 E9 VDDQ_7 F1 VDDQ_8 H2 VDDQ_9 H9 NC_1 J1 NC_2 J9 NC_3 L1 NC_4 L9 NC_7 T7 VSS_1 A9 VSS_2 B3 VSS_3 E1 VSS_4 G8 VSS_5 J2 VSS_6 J8 VSS_7 M1 VSS_8 M9 VSS_9 P1 VSS_10 P9 VSS_11 T1 VSS_12 T9 VSSQ_1 B1 VSSQ_2 B9 VSSQ_3 D1 VSSQ_4 D8 VSSQ_5 E2 VSSQ_6 E8 VSSQ_7 F9 VSSQ_8 G1 VSSQ_9 G9 NT5CB128M16BP DI IC7...

Page 26: ..._CD2 R923 10K OPT CI_TS_DATA 0 CI_CD1 PCM_RST R938 0 OPT CI_A_ADDR 0 C905 10uF 10V CI R925 0 C904 0 1uF CI R940 22 CI CI_CD1 R922 22 CI PCM_INPACK PCM_CE1 R936 10K CI CI_A_ADDR 5 R928 100 CI CI_A_ADDR 14 CI_TS_DATA 1 R921 22 CI R924 10K OPT CI_A_DATA 0 7 R941 22 C907 0 1uF 16V CI CI_CD2 CI_MDI 0 7 CI_VS1 PCM_IORD CI_A_ADDR 11 5V_CI_ON 3 3V_NORMAL R934 10K OPT PCM_CE1 PCM_IOWR CI_IN_TS_VAL CI_IN_TS...

Page 27: ... R2426 1K R2434 47K 1 24V P2400 FW20020 24S OPT 19 14 9 4 18 13 8 3 17 12 7 2 16 11 6 1 20 15 10 5 21 22 23 24 C2426 100pF 50V PANEL_VCC 3 5V_ST C2443 0 1uF 50V R2437 10K A_DIM R2422 0 POWER_24_GND R2415 56K 1 C2421 4700pF 50V R2442 10K MTK_EPI R2441 1 8K MTK_EPI 12V R2430 10K RL_ON 3 5V_ST C2413 0 1uF 50V R2401 10K C2402 10uF 16V C2441 3300pF 50V OPT R2403 10K R24000 OPT L2404 2uH C2400 10uF 16V ...

Page 28: ...INTP4 6 P75 KR5 INTP9 SCK01 SCL01 7 P74 KR4 INTP8 SI01 SDA01 8 P73 KR3 SO01 9 P72 KR2 SO21 10 P71 KR1 SI21 SDA21 11 P70 KR0 SCK21 SCL21 12 P30 INTP3 RTC1HZ SCK11 SCL11 13 P50 INTP1 SI11 SDA11 14 P51 INTP2 SO11 15 P17 TI02 TO02 16 P16 TI01 TO01 INTP5 17 P15 PCLBUZ1 SCK20 SCL20 18 P14 RXD2 SI20 SDA20 19 P13 TXD2 SO20 20 P12 SO00 TXD0 TOOLTXD 21 P11 SI00 RXD0 TOOLRXD SDA00 22 P10 SCK00 SCL00 23 P146 ...

Page 29: ...D1 15 DDC_CLK D0 _HDMI2_JACK DDC_SDA_3_JACK CK _HDMI4_JACK D1 _HDMI1_SOC D0 _HDMI2_JACK CK _HDMI4_JACK DDC_SCL_2_JACK R3310 1K DDC_SCL_4_JACK DDC_SCL_3_JACK CK _HDMI1_SOC D2 _HDMI2_JACK HDMI_HPD_1_SOC R3315 100 5V_HDMI_1_SOC 5V_NORMAL DDC_SDA_4_JACK 5V_HDMI_1_SOC R3304 1K DDC_SCL_1_SOC D1 _HDMI4_JACK R3323 47K DDC_SDA_4_JACK R3302 100 DDC_SCL_1_SOC D1 _HDMI4_JACK R3306 4 7K HDMI_INTERNAL_EDID DDC_...

Page 30: ... 13 14 14 15 15 16 16 R3646 10K C3615 0 1uF 16V RGB_DDC_SDA SPDIF_OUT R3615 33 C3634 18pF 50V EDID_WP PC_R_IN 5V_NORMAL DSUB_HSYNC DSUB_VSYNC D3616 30V OPT PC_L_IN R3642 2 7K RGB_5V RGB_5V IC3600 M24C02 RMN6T RGB_EDID 3 E2 2 E1 4 VSS 1 E0 5 SDA 6 SCL 7 WC 8 VCC SOC_TX SOC_RX D3620 MMBD6100 A2 C A1 R3647 100 RGB_DEBUG D3623 5 6V OPT D3611 5 6V OPT D3612 5 6V OPT D3600 20V OPT D3601 20V OPT D3622 5 ...

Page 31: ...D FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC R3700 10K HP_OUT HP_LOUT 3 3V_NORMAL JK3700 KJA PH 0 0177 EAG61030001 HP_OUT 3 DETECT 4 L 5 GND 1 R HP_DET HP_ROUT VA3700 5 6V OPT VA3700 1 5 6V ESD_MTK_HP_OUT VA3700 2 5 6V ESD_LG1152_HP_OUT 37 JACK_COMMON 2011 11 21 ESD for LG1152 ESD for MTK Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purpo...

Page 32: ...CT 4 M4 5 M5_GND 1 M1 6 M6 AV1_CVBS_IN COMP1_Y R3821 100 RS232 3 3V_NORMAL R3820 100 RS232 3 5V_ST 12V_COMMERCIAL_OUT 12V_COMMERCIAL_OUT 3 5V_ST R3834 10K OPT_RS232 SOC_RX 3 5V_ST SOC_TX P3800 12507WS 04L UART_4PIN_STRAIGHT 1 2 3 4 5 R3810 10K R3806 10K D3803 5 6V OPT D3800 5 6V OPT D3804 20V OPT D3805 20V OPT D3801 5 6V OPT D3802 5 6V OPT D3801 1 5 6V ESD_MTK D3802 1 5 6V ESD_MTK D3800 1 5 6V ESD...

Page 33: ...2 MMBT3904 NXP COMMERCIAL_IR_EU E B C Q4104 MMBT3904 NXP COMMERCIAL_IR E B C R4101 1K COMMERCIAL_IR R4109 1K COMMERCIAL_IR_EU R4115 3 3K COMMERCIAL_IR R4103 3 3K COMMERCIAL_IR R4107 10K IR_BYPASS P4102 12507WR 10L GP4_IR_10P 1 2 3 4 5 6 7 8 9 10 11 D4106 20V ADUC 20S 02 010L OPT D4105 20V ADUC 20S 02 010L OPT D4101 5 6V AMOTECH CO LTD OPT D4100 5 6V AMOTECH CO LTD OPT D4104 5 6V AMOTECH CO LTD OPT...

Page 34: ...uF 10V 5V_USB 3 3V_NORMAL USB_OCD3 C4301 22uF 10V R4332 10K POWER_ON OFF2_4 C4331 0 1uF 16V 12V L4307 3 6uH C4341 4 7uF 10V R4342 10K 5 L4306 BLM18PG121SN1D USB_CTL3 C4325 10uF 16V C4342 100pF 50V USB_DCDC_SN1104041 IC4306 1 BD86180MUV DEV_USB_DCDC_BD86180 3 SS 2 COMP 4 RT 1 EN 6 CTL1 5 CTL2 7 FLG2 8 FLG1 9 USB_OUT2 10 GND_1 11 GND_2 12 USB_OUT1 13 USB_IN_1 14 USB_IN_2 15 USB_IN_3 16 SW_1 17 SW_2 ...

Page 35: ...1D EU R4600 75 EU DTV MNT_R_OUT SC_FB SC_R R4606 47K EU C4606 0 1uF 50V EU R4601 10K EU R4608 0 OPT D4611 5 6V OPT D4607 5 6V OPT D4606 5 6V OPT D4605 5 6V OPT D4608 5 6V OPT D4601 5 6V OPT D4601 1 5 6V ESD_MTK_SCART 200pF D4605 2 5 6V ESD_LG1152_SCART 200pF D4606 2 5 6V ESD_LG1152_SCART 200pF D4601 2 5 6V ESD_LG1152_SCART 200pF D4611 2 5 6V ESD_LG1152_SCART 200pF D4600 20V OPT D4600 2 20V ESD_LG1...

Page 36: ...MBOL MARK OF THE SCHEMETIC M_RFModule_ISP M_REMOTE_RX M_REMOTE_TX 3 3V_NORMAL L4800 120 ohm M_REMOTE M_RFModule_RESET C4800 0 1uF P4800 12507WR 08L M_REMOTE 1 3 3V 2 GND 3 RX 4 TX 5 RESET 6 DC 7 DD 8 GND 9 AR4800 100 1 16W M_REMOTE 3D_SYNC_RF 3D_SYNC_RF ZigBee_Radio Pulse M_REMOTE OPTION ALL M_REMOTE OPTION 48 MOTION REMOTE 2011 11 21 Only For PDP Copyright 2012 LG Electronics Inc All rights reser...

Page 37: ...N_C D4 GN_A C5003 0 01uF 50V EPHY_RDP LAN_JACK_POWER D5000 5 5V OPT D5002 5 5V OPT D5003 5 5V OPT D5001 5 5V OPT D5001 2 5 5V ADUC 5S 02 0R5L ESD_LG1152 D5003 2 5 5V ADUC 5S 02 0R5L ESD_LG1152 D5002 2 5 5V ADUC 5S 02 0R5L ESD_LG1152 D5000 2 5 5V ADUC 5S 02 0R5L ESD_LG1152 D5003 1 ADUC 5S 02 0R5L ESD_MTK D5000 1 ADUC 5S 02 0R5L ESD_MTK D5002 1 ADUC 5S 02 0R5L ESD_MTK D5001 1 ADUC 5S 02 0R5L ESD_MTK...

Page 38: ...07 0 1uF 16V C5821 0 22uF 50V L5805 10 0uH C5802 0 1uF 50V C5800 0 1uF 50V C5815 10uF 35V C5820 0 22uF 50V R5801 10K R5800 10K SPK_L R5812 43 L5803 10 0uH C5819 0 22uF 50V 24V C5814 0 1uF 50V SPK_R Q5800 MMBT3904 NXP E B C C5826 10uF 10V C5827 10uF 35V C5828 0 1uF 16V C5829 1000pF 50V OPT C5801 0 1uF 16V IC5800 STA380BW DEV_STM_AMP 1 VCC_REG 2 VSS_REG 3 OUT2B 4 GND2 5 VCC2 6 OUT2A 7 OUT1B 8 VCC1 9...

Page 39: ...OPT R6008 33K EU 3 5V_ST C6004 0 1uF 50V EU R6000 2 2K EU L6000 EU R6002 470K OPT Q6000 MMBT3904 NXP EU E B C R6011 2 2K EU DTV MNT_R_OUT C6003 33pF EU DTV MNT_L_OUT Q6001 MMBT3904 NXP EU E B C DTV MNT_L_OUT R6004 33K EU C6002 6800pF OPT C6007 6800pF OPT C6008 1uF 25V EU C6000 1uF 25V EU IC6000 AZ4580MTR E1 EU 3 IN1 2 IN1 4 VEE 1 OUT1 5 IN2 6 IN2 7 OUT2 8 VCC SCART_AMP_R_FB SCART_AMP_L_FB R6013 51...

Page 40: ..._HP_MUTE 3 3V_NORMAL R6106 0 OPT R6102 4 7K OPT 3 3V_NORMAL R6107 1K HP_LOUT_MAIN L6100 120 ohm BLM18PG121SN1D R6103 4 7K C6105 10uF 10V IC6100 TPA6132A2 EAN60724701 3 INR 2 INL 4 INR 1 INL 5 OUTR 6 G0 7 G1 8 HPVSS 9 CPN 10 PGND 11 CPP 12 HPVDD 13 EN 14 VDD 15 SGND 16 OUTL C6107 0 1uF 16V R6101 OPT Q6100 MMBT3904 NXP E B C C6100 1uF 10V C6103 1uF 10V C6108 2 2uF 10V C6106 2 2uF 10V C6109 2 2uF 10V...

Page 41: ...MBOL MARK OF THE SCHEMETIC Q6201 AO3407A CI G D S 5V_CI_ON C6207 4 7uF 10V OPT R6218 10K CI 5V_NORMAL C6202 0 1uF 16V OPT R6242 2 2K CI R6221 10K OPT PCM_5V_CTL R6248 10K CI R6223 4 7K CI R6241 22K CI Q6200 MMBT3904 NXP CI E B C C6210 1uF 25V OPT C6210 1 1uF 25V CI_MTK CI POWER ENABLE CONTROL 62 CI SLOT 2011 10 31 Option FOR MTK Option FOR LG1152 Copyright 2012 LG Electronics Inc All rights reserv...

Page 42: ...1 D1 22 D2 23 D3 24 D4 25 D5 26 D6 27 D7 28 GND_2 29 GND_3 30 1 23V_S2_DEMOD 31 S2_RESET 38 SHIELD 32 3 3V_S2_DEMOD 33 S2_F22_OUTPUT 34 S2_SCL 35 S2_SDA 36 LNB 37 GND_4 TU6502 TDSQ H051F CHB_V 1 5V SPLITTER 2 RESET 3 TU_SCL 4 TU_SDA 5 M_ 3 3V 6 M_SIF 7 M_ 1 8V 8 M_CVBS 9 M_IF_AGC 10 M_DIF P 11 M_DIF N 12 S_3 3V 13 S_1 8V 14 S_CVBS 15 GND_1 16 SD_ERROR 17 SD_SYNC 18 SD_VALID 19 SD_MCLK 20 SD_SERIAL...

Page 43: ...8 22 BFO 23 NC_9 24 BFI 25 VIN 26 LX 27 GNDLX 28 LNB 5 TDO 8 GND 6 EXTM 4 NC_1 2 VCP 29 EP C6908 27pF OPT C6903 0 1uF LNB C6909 27pF OPT D6902 40V LNB_SMAB34 A_GND 3 3V_NORMAL DCDC_GND A_GND 12V_LNB A_GND C6911 0 1uF 50V LNB C6904 0 1uF 50V LNB C6912 68uF 35V LNB D6900 30V MBR230LSFT1G LNB R6906 2 2K 1W LNB D6904 LNB C6910 10uF 25V LNB R6904 0 R6905 0 C6916 18pF LNB C6915 18pF OPT C6913 33pF OPT C...

Page 44: ...AL EXT_AMP_RESET 12V_COMMERCIAL_OUT SPK_L_OUT_COMMERCIAL SPK_R_OUT_COMMERCIAL L7000 BLM18PG121SN1D JK7000 KJA PH 0 0177 EAG61030001 COMMER_EXT_AMP_JACK 3 DETECT 4 L 5 GND 1 R SPK_R_OUT_COMMERCIAL SPK_L_OUT_COMMERCIAL Q7001 MMBT3904 NXP E B C 12V_EXT_PWR_DET 3 5V_ST C7002 22uF 25V R7005 22K R7004 100K R7006 10K C7003 22uF 25V C7000 470pF 50V C7001 1uF 25V L7001 BLM18PG121SN1D D7000 5 6V D7001 5 6V ...

Page 45: ...C 3 NC 4 NC 5 NC 6 AUO_65_MIRROR 7 LVDS_SEL 8 NC 9 NC 10 L DIM_ENABLE 11 GND 12 RA0N 13 RA0P 14 RA1N 15 RA1P 16 RA2N 17 RA2P 18 GND 19 RACLKN 20 RACLKP 21 GND 22 RA3N 23 RA3P 24 RA4N 25 RA4P 26 GND 27 BIT_SEL 28 RB0N 29 RB0P 30 RB1N 31 RB1P 32 RB2N 33 RB2P 34 GND 35 RBCLKN 36 RBCLKP 37 GND 38 RB3N 39 RB3P 40 RB4N 41 RB4P 42 GND 43 GND 44 GND 45 GND 46 GND 47 NC 48 VLCD 49 VLCD 50 VLCD 51 VLCD 52 G...

Page 46: ...RITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC I2C_SCL1 L DIM0_SCLK R7601 10K L DIM_OUT 3 3V_NORMAL L DIM0_MOSI R7607 4 7K L DIM_OUT R7606 33 L DIM_OUT P7600 12507WR 08L L DIM_OUT 1 2 3 4 5 6 7 8 9 I2C_SDA1 L DIM0_VS R7600 10K OPT AR7600 33 1 16W L DIM_OUT LOCAL DIMMING To LED DRIVER 76 LOCAL DIMMING 2011 12 13 Copyright 2012 LG Electronics Inc All rights reserved Only for training and ser...

Page 47: ...744 1uF 50V C7749 1uF 50V PMIC_RESET D7703 100V 1N4148W D7705 100V 1N4148W Q7701 MMBT3906 NXP E B C D7704 100V 1N4148W D7706 100V 1N4148W C7728 10uF 10V OPT C7712 1uF 10V C7741 10uF 16V EPI_LOCK6 EPI_LOCK6_SOURCE 3 3V_NORMAL C7732 0 1uF 50V C7727 0 1uF 50V C7754 0 1uF 50V Q7700 MMBT3904 NXP E B C D7700 40V SX34 D7701 40V SX34 Q7702 MMBT3904 NXP E B C Q7703 MMBT3904 NXP E B C R7758 10K R7756 10K R7...

Page 48: ...C_109 N10 NC_110 N11 NC_111 N12 NC_112 N13 NC_113 N14 NC_114 P1 NC_115 P2 NC_117 P8 NC_118 P9 NC_120 P11 NC_121 P12 NC_122 P13 NC_123 P14 DUMMY_1 DU1 DUMMY_2 DU2 DUMMY_3 DU3 DUMMY_4 DU4 DUMMY_5 DU5 DUMMY_6 DU6 DUMMY_7 DU7 DUMMY_8 DU8 DUMMY_9 DU9 DUMMY_10 DU10 DUMMY_11 DU11 DUMMY_12 DU12 DUMMY_13 DU13 DUMMY_14 DU14 DUMMY_15 DU15 DUMMY_16 DU16 IC8100 2 KLM2G1HE3F B001 SAMSUNG_EMMC_2GB DAT0 A3 DAT1 A...

Page 49: ...OR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC 3 5V_ST L8900 BLM18PG121SN1D LOGO_LIGHT P8900 12507WR 03L LOGO_LIGHT 1 2 3 4 Q8900 MMBT3904 NXP LOGO_LIGHT E B C LOGO_LIGHT R8903 1K LOGO_LIGHT 3 5V_ST R8901 10K LOGO_LIGHT R8902 10K OPT C8900 0 1uF 16V LOGO_LIGHT R8900 22 LOGO_LIGHT Place Near Micom Copyright 2012 LG Electronics Inc All rights reserved Only for training and service pu...

Page 50: ......

Page 52: ...on 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 Only for training and service purposes LGE Internal Use Only ...

Page 53: ...D 120Hz 10 bit application Lock signal cascading and feedback to T Con Embedded Control Data Merits Better reliability on common noise No data skew and better EMI margin Fewer lines than mini LVDS Slim PCB design TCON 2 LOCK VCC 1 Figure1 Topology Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 54: ...o data skew Better EMI margin Lower cost Cable Connector Slim S PCB design 14mm Æ 10mm helps slimmer TV EPI FHD 10bit 60Hz 120Hz 240Hz 960ch 960ch 720ch No of Signal 12 12 32 Connector 50 pin 2ea 70pin 2ea LCM T con to S Driver IC TCON 2 LOCK VCC 1 TCON 18 VCC 1 18 HF mini LVDS EPI Bandwidth Capability FHD 120Hz 10Bit 594Mbps 36Lines 1 65Gbps 12Lines FHD 240Hz 10Bit 594Mbps 72Lines 1 25Gbps 32Line...

Page 55: ...ructure Standardization Fewer Lines 12 Embedded clock low EMI Clock skew free Easy to PCB design Demerit Too many lines 36 Clock skew EMI due to clock lines Bandwidth limit Transmission Overhead 4bit delimiter TCON Lock 2 1 TCON EPI Interface mini LVDS vs EPI Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 56: ...ey IR sensing PMIC Audio AMP 10W 10W xxLM760S ZB Soft touch IR Front Spk To module 5 5 EPI Wafer G S model 2 1 LNB IC Only G S model 1 2 Chassis LD22E PCB P No EAX64307905 3 6 Level shifter WIFI RF Assy Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 57: ... EEPROM M Remote Module Air Cable TUNER T C TUNER S2 DIGITAL DEMOD T C DVB S ANALOG DEMOD DIGITAL DEMOD S2 TS_S P LNB USB2 USB3 HDMI4 LVDS 41P 51P eMMC X 1 4GB USB_WIFI SYSTEM DDR3 X 1600 X 16 2Gb DDR CONTROLER A B SPI LOCAL DIMMING I2C Sub Micom RENESASA IR Remote Control SYSTEM DDR3 X 1600 X 16 2Gb SYSTEM DDR3 X 1600 X 16 2Gb UART P_TS Power load EPI 50P 50P X_TAL 27MHz Copyright 2012 LG Electro...

Page 58: ..._OUT DTV MNT_L_OUT IC6000 AZ4580M SC_L R_IN SC_CVBS_IN SCART_LOUT SCART_ROUT DTV MNT_R_OUT SC_FB AIN3_R_AADC AIN3_L_AADC CVBS0P OPCTRL5 AV1_L_IN AV1_R_IN AV1_CVBS_DET AV1_CVBS_IN CVBS 1 PHONE JACK EARPHONE JACK HP_LOUT_MAIN HP_ROUT_MAIN RGB_PC RGB_DDC_SCL RGB_DDC_SDA DSUB_DET DSUB_VSYNC DSUB_HSYNC DSUB_R DSUB_G DSUB_B PC AUDIO PC_L_IN PC_R_IN AIN2_R_AADC Full Scart 18 Pin Gender IC6100 TPA6132A2 H...

Page 59: ...VGL_I VGL_I VGH_ODD VGH_EVEN VGH_R VGH_F VST R 0옴 CLK1 6_I CLK1 6 VCOM_P N LOOP VGL_FB CTRLN VCC CTRLP VGH_FB VDD SWP SWN Main SoC MTK R 47옴 EO_SOC MCLK_SOC GST_SOC GCLK_SOC GCLK MCLK GST EO TCON6 TCON5 TCON4 TCON3 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 60: ... TXA1N P TXACLKN P TXA4N P EPI CH1 2 3 EPI CH4 5 6 TXA0N P TXB1N P TXB2N P Z_OUT Vcore VDD H_VDD Vcore H_VDD VDD VCC18 VCC18 VCOMLFB VCOMRFB EPI_LOCK6 EPI_LOCK6_SOURCE VCOM_DYN PMIC_RESET I2C_SDA2 I2C_SCL2 TCON7 TCON8 OPCTRL11 OPCTRL10 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 61: ...put 10 bit R Dual link LVDS Output 24 10 bit R 24 Dual link LVDS Output LVDS_SEL H JEIDA L or NC VESA LGD BIT_SEL H or NC 10 bit L 8 bit L DIMO_SCLK L DIMO_MOSI I2C_SCL1 I2C_SDA1 L DIMO_VS LDM_CK LDM_VSYNC STB_SCL LDM_D0 STB_SDA Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 62: ...ule EPI cable 50 50PIN LED driver PSU 10Pin IR Touch Cable SPK Cable Local Dimming Cable PCBs Cables 6 1 2 3 1 2 3 4 5 6 xxLM760S ZA 7 RF Assy Cable 7 8 WIFI Assy Cable 8 4 5 4 RF Assy 5 WIFI Assy Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 63: ...CB Pinmap Circuit Block Diagram Pin Configuration KEY1 KEY2 Voltage Tolerance of voltage 0 2V Ass y Picture Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 64: ...er Indicator UI is Stand By keep staying Red LED Off status Remote Key input When you put the remote Control button Red LED Blinks once Warm Stand by Red LED On stays and In the case of Set On Red LED turns Off Æ Including DVR Ready model Japanese model Same as the 11Y 3D mode Red LED Off Power On condition is identical Same as the 11Y Factory Condition Factory Default Mode In Stop 12Y LED Model S...

Page 65: ... 1 sec you 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 4 It doesn t matter that Touch data gets low value after taking off your finger Manual of Touch Sensitivity Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 66: ...rea 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 Addr Value Copyright 2012 LG Electronics Inc All rights reserved Only ...

Page 68: ... 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 version or 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 Æ See 6 2 Packets on page 8 Copy...

Page 69: ... CH 0x01 0x8001 Y VOL 0x02 0x8002 Y VOL 0x03 0x8003 Y MUTE 0x09 0x8009 Y 3D_Mode 0xDC 0x80DC Y MyAPPS 0x42 0x8042 Y VOICE 0x800A Y VOICE_START Logical Buttons AUTO_WAKEUP X 0x800C VOICE_START X 0x800A VOICE_STOP X 0x800D POINT_START X 0x803E POINT_STOP X 0x803F power mute home ok voice vol ch M3 Remote M4 Remote power back home ok mute vol ch 3D star Copyright 2012 LG Electronics Inc All rights re...

Page 70: ...ocon Bluetooth Receiver BCM20702M BROADCOM Bluetooth 4 0 Antenna Connector X tal 20 MHz Antenna X tal 24 MHz 3 M4 Block Diagram 2 8V LDO 256Kbit E2 PROM 512Kbit Serial Flash I2C I2C SPI UART SPI WM8950 Wolfson Voice MIC Knowles I2S M4 4 mode Only Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 71: ...MMA8452 Stmicro Sensing device tilt Pitch Roll angle RF Micom RF Antenna SDBTPTR3015 Partron Wireless communication X tal 24MHz Partron RF Micom BCM20733 Broadcom DC DC Converter TPS61097 TI Battery Boost up Regulator LDO1 uPI7716 uPI RF Gyro Accelerometer Power Supply LDO2 uPI7716 uPI Audio Codec Mic Power Supply 4 Function list Copyright 2012 LG Electronics Inc All rights reserved Only for train...

Page 72: ...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 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...

Page 74: ...ass y feature LGIT WIFI built in feature PIN USB interface 1 5V 2 DM 3 DP 4 GND Pin map Block diagram Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 77: ...12Y Widevine HDCP 2 0 NETFLX 1 Widevine 2 HDCP 2 0 NETFLIX 3 DTCP 4 Changed BOM Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 78: ...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 ...

Page 79: ...ecification developed by Intel Corporation to protect digital entertainment across the DVI HDMI interface Why HDCP2 0 9 HDCP revision 2 0 supports a broader range of wired and wireless interfaces Netflix 9 the services maintain a huge selection of movies and latest releases and offer DVD rentals via mail online streaming 2 HDCP 2 0 NETFLIX Copyright 2012 LG Electronics Inc All rights reserved Only...

Page 80: ... is used to encrpt the content being exchanged 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 entertain...

Page 81: ...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 주3 CNTV Yes China Smart TV Only Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 83: ... 7 Off when on off while viewing power auto on off 8 8 C Audio error No audio Normal video 9 9 Wrecked audio discontinuation noise 10 10 D Function error No response in remote controller key error recording error memory error 11 11 External device recognition error 12 12 E Noise Circuit noise mechanical noise 13 13 F Exterior error Exterior defect 14 First of all Check whether there is SVC Bulleti...

Page 84: ...le LVDS reconnection condition A10 A11 A10 32 37 42 47 55 A11 32 AUO 12 Adjustment Test pattern ADJ Key A12 13 A Video error_Vertical Horizontal bar residual image light spot LCD TV connection diagram A8 14 Check Link Cable LVDS reconnection condition A10 A11 A10 32 37 42 47 55 A11 32 AUO 15 Adjustment Test pattern ADJ Key A12 16 Appendix Defected Type caused by T Con Inverter Module Exchange T Co...

Page 85: ...ys check record S W Version and White Balance value before replacing the Main Board Replace Main Board Re enter White Balance value Precaution Established date Standard Repair Process Revised date 1 13 LCD TV Error symptom A Video error No video Normal audio A4 A1 A2 A28 A7 A3 First of all Check whether all of cables between board is inserted properly or not Main B D Power B D LVDS Cable Speaker C...

Page 86: ...replace MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio A4 Established date Revised date 2 13 LCD TV Error symptom 2010 12 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 87: ...Main B D Check Tuner soldering Normal Picture Y N Y Close Normal Picture Y Close Menu Setup Booster By using Digital signal level meter By using Diagnostics menu on OSD Menu Set up Support Signal Test Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N N Normal Picture Y Close N A7 Standard Repair Process Estab...

Page 88: ...fferent maker TV etc Y Change satellite setting match with installed ANT N Normal Picture Y Close N A7 Standard Repair Process Established date Revised date 3 13 LCD TV Error symptom 2011 01 24 Check satellite setting Check LNB frequency Check satellite Check Satellite connection DiSEqC motor etc Normal setting Contact with signal distributor or broadcaster Cable or Air Close N Check Tuner solderi...

Page 89: ...ice and cable Y External device Cable normal RGB HDMI DVI error Check external device and cable Replace Main B D Replace Main B D N N A Video error Color error A8 N Y End Replace module Request repair for external device cable Color error Check Test pattern A12 A10 A11 Standard Repair Process Established date Revised date 4 13 LCD TV Error symptom 2010 12 14 Copyright 2012 LG Electronics Inc All r...

Page 90: ... Jig pattern Generator Set top Box etc N Y Replace Main B D Screen normal Check screen condition by input External Input Component RGB HDMI DVI Request repair for external device Component error RGB error HDMI DVI Connect other external device and cable Check normal operation of External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc Replace Main B D Screen no...

Page 91: ... each output of Power B D N Y Normal voltage Replace Main B D N Y OK Replace Main B D N Y Normal Check ST BY 3 5V Replace Power B D N Y Normal voltage Replace Power B D Y A17 A18 A19 A4 Standard Repair Process Established date Revised date 6 13 LCD TV Error symptom Stand By Red Operating white Close 2010 12 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purp...

Page 92: ...y REMOTE CONTROL POWEROFF_OFFTIMER Power off by OFF TIMER POWEROFF_SLEEPTIMER Power off by SLEEP TIMER POWEROFF_INSTOP Power off by INSTOP KEY POWEROFF_AUTOOFF Power off by AUTO OFF 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...

Page 93: ...repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video A24 A25 Disconnection Established date Revised date 8 13 LCD TV Error symptom Standard Repair Process 2010 12 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 94: ...ct and check other external device N Y Normal audio Check and fix external device Replace Power B D N Y Normal voltage Check input signal RF External Input signal Signal normal When RF signal is not received Request repair to external cable ANT provider Y Check audio B Voltage 24V Replace Main B D In case of External Input signal error Check and fix external device Replace Main B D N End Establish...

Page 95: ... Baterry of R C Check Repair Cable connection Connector solder Normal operating Check B 3 5V On Main B D A27 Normal Voltage Close N N Check 3 5v on Power B D Replace Power B D or Replace Main B D Power B D don t have problem A4 Check IR Output signal Normal Signal N Y Repair Replace IR B D N A27 Replace Main B D Y A27 Standard Repair Process Established date Revised date 10 13 LCD TV Error symptom...

Page 96: ... device cable RGB HDMI DVI Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information D Function error External device recognition error Established date Revised date 11 13 LCD TV Error symptom Standard Repair Process 2010 12 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 97: ...s shown in the solution manual For models without any fix information provide the description OR 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 of the description in Part related to nose in the Owner s Manual E Noise Circuit noise mechanical noise Established date Revised date 12 13 LCD TV ...

Page 98: ...oller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Adjust VCOM Established date Revised date 13 13 LCD TV Error symptom Standard Repair Process A28 2010 12 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 99: ...WER BOARD PIN voltage checking method A19 28 C Audio error_No audio Normal video Checking method in menu when there is no audio A24 29 Voltage and speaker checking method when there is no audio A25 30 C Audio error_Wrecked audio discontinuation Voltage and speaker checking method in case of audio error A25 31 D Function error_ No response in remote controller key error Remote controller operation ...

Page 100: ... White Balance value A Video error_No video Normal audio ALL MODELS A4 Established date Revised date Error symptom Content LCD TV Entry method 1 Press the ADJ button on the remote controller for adjustment 2 Enter into White Balance of item 7 3 After recording the R G B GAIN Cut value of Color Temp Cool Medium Warm re enter the value after replacing the MAIN BOARD 2010 12 14 Copyright 2012 LG Elec...

Page 101: ... Board Main Board SMAW200 H24S YEONHO 1 Power on 2 24V 3 24V 4 24V 5 GND 6 GND 7 GND 8 GND 9 3 5V 10 3 5V 11 3 5V 12 3 5V 13 GND 14 GND 15 GND 16 GND 17 12V 18 Inverter On off 19 12V 20 Lamp A Dim LED N C 21 12V 22 PWM Dim 1 23 GND P_DIM2 Lamp SCANNING Model PWM Dim 2 24 Error out Edge LED 2010 12 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE I...

Page 102: ...ard Repair Process Detail Technical Manual TUNER input signal strength checking method A Video error_Video error video lag stop ALL MODELS A6 Established date Revised date Error symptom Content LCD TV 2010 12 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 103: ...1 Checking method for remote controller for adjustment Press the IN START with the remote controller for adjustment Version ALL MODELS A7 Established date Revised date Error symptom Content LCD TV 2010 12 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 104: ... bar residual image light spot As the part connecting to the external input check the screen condition by signal A8 Established date Revised date Error symptom Content LCD TV ALL MODELS 2010 12 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 105: ...om power supply finally replace the MAIN BOARD Standard Repair Process Detail Technical Manual TUNER checking part A Video error_Video error video lag stop ALL MODELS A9 Established date Revised date Error symptom Content LCD TV 2010 12 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 106: ... 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 A12 Established date Revised date Error symptom Content LCD TV 2010 12 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 107: ...n 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 Appendix Exchange T Con Board 1 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 108: ...ower Section Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION GRADATION Abnormal Display Appendix Exchange T Con Board 2 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 109: ...pendix 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 ...

Page 110: ...Press damage Crosstalk Crosstalk Press damage Panel Mura Light leakage Press damage Un repairable Cases In this case please exchange the module Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 111: ...lock Source TAB IC Defect Horizontal Block Gate TAB IC Defect Horizontal line Gate TAB IC Defect Gate TAB IC Defect Horizontal Block Gate TAB IC Defect Appendix Exchange the Module 2 Un repairable Cases In this case please exchange the module Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 112: ...7 Established date Revised date Error symptom Content LCD TV ST BY condition Red Power ON condition white Front LED control Menu Æ Option Æ Power Indicator Æ Standby light ON 2010 12 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 113: ...Check the DC 20V 24V 12V 3 5V Edge LED 2010 12 14 Edge LED 24 Pin Power Board Main Board SMAW200 H24S YEONHO 1 Power on 2 24V 3 24V 4 24V 5 GND 6 GND 7 GND 8 GND 9 3 5V 10 3 5V 11 3 5V 12 3 5V 13 GND 14 GND 15 GND 16 GND 17 12V 18 Inverter On off 19 12V 20 Lamp A Dim LED N C 21 12V 22 PWM Dim 1 23 GND P_DIM2 Lamp SCANNING Model PWM Dim 2 24 Error out Copyright 2012 LG Electronics Inc All rights re...

Page 114: ...wer Board Main Board SMAW200 H24S YEONHO 1 Power on 2 24V 3 24V 4 24V 5 GND 6 GND 7 GND 8 GND 9 3 5V 10 3 5V 11 3 5V 12 3 5V 13 GND 14 GND 15 GND 16 GND 17 12V 18 Inverter On off 19 12V 20 Lamp A Dim LED N C 21 12V 22 PWM Dim 1 23 GND P_DIM2 Lamp SCANNING Model PWM Dim 2 24 Error out Edge LED Edge LED Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE ...

Page 115: ...tandard Repair Process Detail Technical Manual POWER OFF MODE checking method B Power error _Off when on off whiling viewing ALL MODELS A22 Established date Revised date Error symptom Content LCD TV 2010 12 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 116: ...to On Standard Repair Process Detail Technical Manual Checking method in menu when there is no audio C Audio error_No audio Normal video ALL MODELS A24 Established date Revised date Error symptom Content LCD TV 2010 12 14 Copyright 2012 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 117: ...tail Technical Manual Voltage and speaker checking method when there is no audio C Audio error_No audio Normal video ALL MODELS A25 Established date Revised date Error symptom Content LCD TV 24 Pin Power Board Main Board SMAW200 H24S YEONHO 1 Power on 2 20V 24V 3 20V 24V 4 20V 24V 5 GND 6 GND 7 GND 8 GND 9 3 5V 10 3 5V 11 3 5V 12 3 5V 13 GND 14 GND 15 GND 16 GND 17 12V 18 Inverter On off 19 12V 20...

Page 118: ...does not move at all Standard Repair Process Detail Technical Manual Remote controller operation checking method D Function error_ No response in remote controller key error ALL MODELS A27 Established date Revised date Error symptom Content LCD TV P4102 1 SCL 2 SDA 3 GND 4 KEY1 5 KEY2 6 St 3 5V 7 GND 8 RED_LED 9 IR 10 GND 2010 12 14 Copyright 2012 LG Electronics Inc All rights reserved Only for tr...

Page 119: ...e 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 Push the OK key to store the value Then the message Saving OK is pop Press the exit key to finish V COM adjustment A28 Established date Revised date Error symptom Content LCD TV 2010 12 14 Copyright 2012 LG Electronics Inc All r...

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