LG 49LF640V Service Manual Download Page 80

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Established
date

Standard Repair Process Detail Technical Manual

Revised
date

Error symptom

Content

Check LCD back light with naked eye

A. Video

error_No

video/Normal audio

After turning on the power and disassembling the case, check with the naked eye, whether

you can see light from module holes.

Only for training and service purposes

LGE Internal Use Only

Summary of Contents for 49LF640V

Page 1: ...40V 49LF640V ZD 55LF640V 55LF640V ZD CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL LED 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: ...ights reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 13 BLOCK DIAGRAM 21 EXPLODED VIEW 31 SCHEMATIC CIRCUIT DIAGRAM APPENDIX TROUBLE SHOOTING GUIDE APPENDIX ...

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: ...ctrostatic charge on your body by touching a known earth ground Alter natively obtain and wear a commercially available discharg ing wrist strap device which should be removed to prevent potential 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 e...

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: ...land Latvia Estonia Lithuania Poland Portugal Roma nia Albania Bosnia Slovakia Belarus DTV MPEG2 4 DVB T2 11 countries UK Ireland Sweden Denmark Finland Norway Ukraine Kazakh stan Russia Italy Croatia Serbia DTV MPEG2 4 DVB C 37 countries Germany Netherland Switzerland Hungary Austria Slovenia Bulgaria France Spain Italy Belgium Russia Luxemburg Greece Czech Croatia Turkey Morocco Ireland Latvia E...

Page 7: ... 2 5 2 3 3 4 5 6 64 QAM 1 2 2 5 2 3 3 4 5 6 256 QAM 1 2 2 5 2 3 3 4 5 6 DVB C Symbolrate 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 45 Msymbol s DVB S QPSK 2 45 Msymbol 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 5 Scart 1EA PAL SECAM Scart 1 Jack is Full scart and support ATV DTV OUT n...

Page 8: ...80i 2 720 480 15 63 59 94 SDTV DVD 480i 3 720 480 31 47 59 94 480p 4 720 480 31 50 60 00 480p 5 720 576 15 625 50 00 SDTV DVD 625 Line 6 720 576 31 25 50 00 HDTV 576p 7 1280 720 45 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 HDT...

Page 9: ...on H freq kHz V freq Hz Proposed Remarks 1 640 480 31 469 59 94 SDTV 480P 2 648 480 31 5 60 00 SDTV 480P 3 720 480 15 73 59 97 SDTV DVD 480I 525I Spec out but display 4 720 480 15 75 60 SDTV DVD 480I 525I 5 720 576 15 625 50 SDTV DVD 576I 625I 50Hz 6 720 480 31 47 59 94 SDTV 480P 7 720 480 31 5 60 SDTV 480P 8 720 576 31 25 50 SDTV 576P 9 1280 720 44 96 59 94 HDTV 720P 10 1280 720 45 60 HDTV 720P 1...

Page 10: ... 35 148 5 4 Side by side Full HDTV 720P 16 1920 1080 33 72 33 75 59 94 60 74 18 74 25 5 Top and Bottom Side by side half Secondary HDTV 1080I Primary HDTV 1080I 17 67 432 67 50 59 94 60 148 35 148 5 5 Frame packing Field alternative Primary HDTV 1080I HDTV 1080I 18 33 72 33 75 59 94 60 148 35 148 5 5 Side by side Full HDTV 1080I 19 28 125 50 00 74 25 20 Top and Bottom Side by side half Secondary H...

Page 11: ...umn Interleaving 8 1920 1080 28 12 25 74 25 HDTV 1080P 9 1920 1080 33 75 30 00 74 25 HDTV 1080P 10 1920 1080 67 50 60 00 148 5 HDTV 1080P 2D to 3D Side by Side Half Top Bottom Checker Board Single Frame Sequential Row Interleaving Column Interleaving 11 1920 1080 56 250 50 148 5 HDTV 1080P No Resolution H freq kHz V freq Hz Pixel clock MHz 3D input proposed mode 1 Under 704x480 2D to 3D 2 Over 704...

Page 12: ... 30 000 74 25 HDTV 1080P 14 1920 1080 33 71 29 97 74 176 HDTV 1080P 7 8 Component Input 3D 3D supported mode manually No Resolution H freq kHz V freq Hz Pixel clock MHz 3D input proposed mode Proposed 1 1024 768 48 36 60 65 2D to 3D Side by Side half Top Bottom HDTV 768P 2 1360 768 47 71 60 85 5 3 1920 1080 67 500 60 148 50 2D to 3D Side by Side half Top Bottom Checker Board Single Frame Sequentia...

Page 13: ...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 MAC ad...

Page 14: ...itialized 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 7 Model Number D L like below photo 3 Input the Factory model name ex 55LF630V ZA or Serial number like photo 4 Check the model name Instart menu Factory name displayed ex 55LF630V ZA 5 Check the Diagnostics DTV country only Buyer model...

Page 15: ... DDC Function 0001 0100 Analog 0001 0100 Digital Chassis MODEL NAME HEX LD51H 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 ⓔ1 ⓔ2 10bit XvYcc ⓔ2 8bit XvYcc ⓔ3 HDMI1 E6 81 C8 X HDMI2 E6 71 B8 X HDMI3 E6 61 A8 X INPUT MODEL NAME HEX HDMI1 78 03 0C 00 10 00 B8 2D 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10 HDMI2 78 03 0C 00 20 00 B8 2D 20 C0 0E 01 4F 3F FC 08 10 18 10 06 10 16 10 28 10...

Page 16: ... is needed 3 Adjustment Remote control 4 Video Signal Generator MSPG 925F 720p 204 Gray Model 217 Pattern 49 Color Analyzer Matrix should be calibrated using CS 1000 4 2 4 Equipment connection MAP 4 2 5 Adj Command Protocol Command Format LEN Number of Data Byte to be sent CMD Command VAL FOS Data value CS Checksum of sent data A Acknowledge Ex Send JA_00_DD Ack A_00_okDDX RS 232C Command used dur...

Page 17: ...rdinate and color temperature Luminance 204 Gray Standard color coordinate and temperature using CS 1000 over 26 inch Standard color coordinate and temperature using CA 210 CH 14 4 2 8 LED White balance table EDGE LED module change color coordinate because of aging time Apply under the color coordinate table for compensated aging time Only march to December Global Model normal line LGD Only Januar...

Page 18: ...2 pattern No 83 1 Please input 3D test pattern like below 2 When 3D OSD appear automatically then select Green key 3 Don t wear a 3D Glasses check the picture like below 4 5 2 HDMI ARC Function Inspection 1 Test equipment Optic Receiver Speaker MSHG 600 SW 1220 HDMI Cable for 1 4 version 2 Test method 1 Insert the HDMI Cable to the HDMI ARC port from the master equipment HDMI 1 2 Check the sound f...

Page 19: ... Off Button to On in Wi Fi Connection Step 4 The system finds any AP like blow PIC Step 5 Select the AP you want to connect 4 7 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...

Page 20: ... 100 mA 2 Mass Production Line Test GND AC 1 5 KV sec Cut off current not exceed 100 mA TEST time DQA 1 min Mass Production Line 1 sec TEST POINT GND TEST POWER CORD GND SIGNAL CABLE METAL GND Internal Pressure TEST POWER CORD GND LIVE NEUTRAL LEAKAGE CURRENT At 0 5 mArms 8 Audio Measurement condition 1 RF input Mono 1 KHz sine wave signal 100 Modulation 2 CVBS Component 1 KHz sine wave signal 0 5...

Page 21: ...S Out I2C 1 EPI I2C 2 LVDS USB 2 0 I2C 5 H P Line Out AV COMP SCART D Demod I2C 4 OCP 1 5A OCP 1 5A ARC R E A R S I D E S I D E R E A R H AMP TI CVBS YPbPr CVBS RGB SPDIF OUT ETHERNET I2C 3 LOCAL DIMMING BLUETOOTH IR KEY EYE PM IC WIFI SUB ASSY I2C 2 IR KEY UART_BT IR Bla Ready Tuner I2C 6 LAN PHY OCP 1A X_TAL 25MHz I2C EYE DVB T2 C S2 TUNER Si2178B RDA 5815M ATV DVB T C DVB S SIF CVBS TS_ 0 7 Si2...

Page 22: ...SDA3 I2C_SCL3 I2C_SDA1 I2C_SCL1 IC6900 LNB 33Ω 22Ω 33Ω 3 3V_NORMAL 3 3KΩ IC7700 PMIC I2C_SDA2 I2C_SCL2 3 3V_NORMAL 3 3KΩ IC5600 NTP7533 AMP I2C_SDA0 I2C_SCL0 0 Ω P7400 Local dimming 33Ω IC103 NVRAM 3 3KΩ 3 3V_NORMAL I2C_SDA4 I2C_SCL4 33Ω I2C_SDA5 I2C_SCL5 TUNER 3 3KΩ 3 3V_TUNER 33Ω IC101 M14 IR KEY EYE 100Ω 3 5V_ST 3 3KΩ IC3000 Renesas MICOM EYE_I2C_SDA EYE_I2C_SCL 2 I2C ...

Page 24: ...3 AK32 AL33 AL32 AL32 AM33 TP_DVB_DATA0 7 RESET_DEMOD 25 AH19 GPIO26 B1 3 3V 1 SCL_DEMOD 27 SDA_DEMOD 30 AH22 SCL3 AJ22 SDA3 AK28 DMD_ADC_INP AL28 DMD_ADC_INN IC2_SCL6 IC2_SDA6 FE_DEMOD1_TS_ERROR FE_DEMOD1_TS_CLK FE_DEMOD1_TS_SYNC FE_DEMOD1_TS_VAL FE_DEMOD1_TS_DATA 0 7 TU_RESET1 LNB_TX I2C_SCL4 I2C_SDA4 3 3V_TU 1 2K Ω 3 3V_DEMOD_TU 3 3V_Normal 3 3V_LNA_TU IF_P IF_N IF_AGC 33Ω AIF_AGC 3 AL27 CVBS_I...

Page 25: ...IO_DATA 0 7 TS_IN 0 7 TPI_DATA 0 7 TS_OUT 0 7 CI_DET1 CAM_CD1_N CI_DET2 CAM_CD2_N CAM_CE1_N CARD_EN1 CARD_EN2 10K Ω EB_BE_N0 EB_BE_N1 IOWD IORD EB_ADDR 0 14 EB_DATA 0 7 ADDR 0 14 DAT 0 7 CAM_WAIT_N CAM_REG_N CAM_IREQ_N EB_OE_N EB_WE_N TPI_CLK SOP VAL TS_OUT_CLK SYNC VAL CI_RESET CI_WAIT INPACK REG IRQA O_EN WR_EN VCC CAM_VCCEN_N 5V_NORMAL 33 Ω TPO_CLK SOP VAL TS_IN 0 7 33 Ω TPO_CLK SOP VAL CI_IN_T...

Page 26: ...IN_S0C_S0Y COMP2_Pb__IN_SOC PB2_IN PR2_IN AUDA_L_CH3_IN COMP2_Pr_IN_SOC AUAD_L_CH3_IN AUDA_R_CH3_IN AUAD_R_CH3_IN SC_CVBS_IN SC_ID FB SC_R G B SC_CVBS_IN_SOY SC_L R_IN TU_CVBS TUNER_SIF IF_P N CVBS_IN2 SC_CVBS_IN_SOC SC_ID_SOC SC_FB_SOC SC1_SID SC1_FB PB1_IN Y1_IN SOY1_IN PR1_IN AUDA_L_CH2_IN AUDA_R_CH2_IN COMP1_PB_IN_SOC COMP1_Y_IN_SOC COMP1_Y_IN_SOC_SOY COMP1_PR_IN_SOC AUAD_L_CH2_IN AUAD_R_CH2_I...

Page 27: ...H HP_L ROUT_MAIN HEAD PHONE LPF 4P WAFER AUDA_OUTL AUDA OUTR IC101 M14 TUNER_SIF DAC_SCK DAC_LRCH AUD_LRCK AUD_SCK DAC_LRCK SDA0 SCL0 I2C_SDA1 I2C_SCL1 IC3000 MICOM AMP_MUTE AUDA_L_CH2_IN AUDA_R_CH2_IN AUDA_L_CH3_IN AUDA_R_CH3_IN JK3802 DVB only DVB only AUD_MASTER_CLK AUDCLK_OUT JK4600 GPIO21 AMP_RESET_N IC6100 TPA6138A2PWR HP AMP JK3401 JK3403 LPF SPEAKER_L SPEAKER_R IC6000 AZ4580MTR OP AMP Mute...

Page 28: ...for training and service purposes HDMI1 HDMI2 HDMI3 CEC_REMOTE RENESAS MICOM HDMI_CEC IC101 M14 Q3001 DDC_SCL_1 DDC_SCL_2 DDC_SDA_2 TMDS Link 8bits SPDIF_OUT_ARC DDC_SDA_1 X tal 32 768kHz TMDS Link 8bits TMDS Link 8bits WOL_CTL DDC_SCL_4 DDC_SDA_4 HDMI_HPD HDMI_HPD HDMI_HPD 8 HDMI ...

Page 29: ... GAM9 GMA10 GMA16 GMA18 VDD VCC1 8 EO GST GCLK MCLK EPI_LOCK8 EPI_LOCK8 TR Diode TR Diode SWP CTRLP SWN CTRLN VGH VGL 6 6 8 6 8 I2C 4 4 4 VGH_ODD EVEN VST GIP_RST 4 6 6 CLK1 CLK6 6 6 GMA4 GMA5 GAM7 GMA12 GMA14 GMA15 2CH OP AMP PVCOM LEFT RIGHT VCOM 1 2 Top Bottom H_VDD VCOMRFB VCOMLFB VGH_ODD EVEN VST GIP_RST CLK1 CLK6 GMA4 GMA5 GAM7 GMA12 GMA14 GMA15 PMIC L S TPS65175 EPI_LOCK4 9 Panel Interface ...

Page 30: ...DM2 HUB_PORT_OVER0 OCP OCP 5V_USB_1 5V_USB_2 USB_OCD1 USB_CTL1 USB_CTL2 USB_OCD2 WIFI BT_DM WIFI BT_DP EYY_SCL EYE_SDA USB2_0_DP0 USB2_0_DM0 USB_DP3 5V_USB_3 USB_CTL3 USB_OCD3 USB3 USB_DM3 HUB_VBUS_CTRL0 IC 4500 IC 4306 USB3_DP1 USB3_DM1 EB_CS3 EB_CS2 USB2_1_DP0 USB2_1_DM0 EB_CS1 EB_CS0 WIFI BT IR KEY EYE Micom LED IR KEY1 KEY2 I2C I2C_SDA1 I2C_SCL1 10 USB 2 0 WIFI BT IR KEY EYE ...

Page 31: ...teristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock Fire or other Hazards Do not modify the original design without permission of manufacturer IMPORTANT SAFETY NOTICE 900 200 400 800 540 521 530 820 501 500 502 121 120 LV1 A2 A10 ...

Page 32: ...V_NORMAL R174 200 1 3 3V_NORMAL R173 200 1 OPM1 SOC_RX AR100 33 1 16W C101 10pF C102 10pF 5V_NORMAL R11033 10K NON_CI R11034 10K NON_CI IC103 2 BR24G256FJ 3 NVRAM_ROHM 3 A2 2 A1 4 GND 1 A0 5 SDA 6 SCL 7 WP 8 VCC X101 24MHz 4 GND_2 1 X TAL_1 2 GND_1 3 X TAL_2 AR102 3 3K AR103 3 3K AR104 3 3K AR105 33 IC101 LG1311 C1 XIN_MAIN B23 XO_MAIN A23 PORES_N AG21 BOOT_MODE AJ18 PLLSET0 AB8 PLLSET1 AC8 OPM0 A...

Page 33: ... NON_SS_DDR R231 4 7K R234 10K ODT_46_ohm MODEL_OPT_13 R233 10K ODT_55_ohm R239 10K OPT MODEL_OPT_15 R237 10K OPT MODEL_OPT_14 R240 10K OPT R236 10K R235 10K OPT MODEL_OPT_16 R238 10K TU_RESET2 IC101 LG1311 C1 TP_DVB_CLK AH30 TP_DVB_SOP AH32 TP_DVB_VAL AH31 TP_DVB_ERR AH33 TP_DVB_DATA7 AM33 TP_DVB_DATA6 AL32 TP_DVB_DATA5 AL33 TP_DVB_DATA4 AK32 TP_DVB_DATA3 AK33 TP_DVB_DATA2 AK31 TP_DVB_DATA1 AJ30 ...

Page 34: ..._1 DDR3_OPT1 COMP1_Pb R370 0 GOOGLE SMARTCARD_RST SD_EMMC_DATA 2 R352 22K EU I2S_AMP SC_CVBS_IN_SOC C357 1uF 10V D1 _HDMI1 AUD_SCK D0 _HDMI1 R333 33 C313 4 7uF 10V COMP1_Y_IN_SOC SCART_LOUT_SOC R360 33 IF_N AUAD_R_CH3_IN CK _HDMI2 HP_ROUT_MAIN SMARTCARD_VCC SD_EMMC_CMD C339 100pF 50V OPT R385 4 7K OPT SMARTCARD_DET SD_EMMC_DATA 3 D1 _HDMI3 CK _HDMI3 D0 _HDMI3 D2 _HDMI3 D2 _HDMI3 CK _HDMI3 D0 _HDMI...

Page 35: ...8 DQL6 G2 DQL7 H7 DQU0 D7 DQU1 C3 DQU2 C8 DQU3 C2 DQU4 A7 DQU5 A2 DQU6 B8 DQU7 A3 VREFCA M8 VREFDQ H1 ZQ L8 VDD_1 B2 VDD_2 D9 VDD_3 G7 VDD_4 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 A14 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 V...

Page 36: ... M7 BA0 M2 BA1 N8 BA2 M3 CK J7 CK K7 CKE K9 CS L2 ODT K1 RAS J3 CAS K3 WE L3 RESET T2 DQSL F3 DQSL G3 DQSU C7 DQSU B7 DML E7 DMU D3 DQ0 E3 DQ1 F7 DQ2 F2 DQ3 F8 DQ4 H3 DQ5 H8 DQ6 G2 DQ7 H7 DQ8 D7 DQ9 C3 DQ10 C8 DQ11 C2 DQ12 A7 DQ13 A2 DQ14 B8 DQ15 A3 VREFCA M8 VREFDQ H1 ZQ L8 VDD_1 B2 VDD_2 D9 VDD_3 G7 VDD_4 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 VDD...

Page 37: ..._2 W12 AVDD11_C4TX_3 Y12 AVDD11_C4TX_4 AA12 DVDD11_XTAL G18 DVDD11_DR3PLL H18 DVDD11_CVBSPLL AF23 AVDD11_DMD_1 AF24 AVDD11_DMD_2 AF25 DVDD18_EMMC_1 L26 DVDD18_EMMC_2 M26 IC101 LG1311 C1 GND_1 B22 GND_2 B24 GND_3 C22 GND_4 C23 GND_5 C24 GND_6 D4 GND_7 D5 GND_8 D6 GND_9 D20 GND_10 D21 GND_11 E6 GND_12 E20 GND_13 E21 GND_14 F6 GND_15 F7 GND_16 F8 GND_17 F18 GND_18 F19 GND_19 F20 GND_20 F21 GND_21 G7 ...

Page 38: ... CAM_INPACK_N AR703 33 CI R715 100 CI TPI_DATA 4 CI_TS_DATA 3 CI_TS_DATA 6 EB_ADDR 13 EB_ADDR 4 PCM_OE CI_TS_DATA 0 AR707 100 CI CI_TS_CLK PCM_IRQA C708 12pF 50V OPT AR712 33 CI CI_ADDR 6 EB_ADDR 1 EB_ADDR 0 PCM_WE CI_ADDR 1 CI_DATA 0 7 R722 10K CI CI_ADDR 5 TPI_SOP CI_IN_TS_VAL PCM_INPACK R721 33 OPT EB_BE_N1 5V_CI_ON CI_IN_TS_DATA 2 EB_ADDR 14 CI_IN_TS_VAL CI_ADDR 14 PCM_OE CI_ADDR 10 AR714 33 C...

Page 39: ...4 22uF 10V C2354 10uF 10V R2319 430K 1 16W 1 R2339 10K C2300 22uF 10V R2312 10K INV_CTL C2339 10uF 10V C2346 22uF 10V C2303 0 1uF 25V 3 3V_EMMC PWM_DIM2 C2327 330pF 50V POWER_DET R2313 4 7 1 16W 5 R2307 100 PANEL_VCC 3 3V_NORMAL C2335 100pF 50V OPT L2308 C2319 0 1uF 16V R2342 10K R2346 3 3K LVDS_DISCHARGE R2320 560K 1 10W 5 13V VA23001 5 6V AMOTECH CO LTD Default_Amotech C2326 10uF 25V C2309 10uF ...

Page 40: ...DA20 19 P13 TXD2 SO20 20 P12 SO00 TXD0 TOOLTXD 21 P11 SI00 RXD0 TOOLRXD SDA00 22 P10 SCK00 SCL00 23 P146 24 P147 ANI18 25 P27 ANI7 26 P26 ANI6 27 P25 ANI5 28 P24 ANI4 29 P23 ANI3 30 P22 ANI2 31 P21 ANI1 AVREFM 32 P20 ANI0 AVREFP 33 P130 34 P01 TO00 RXD1 35 P00 TI00 TXD1 36 P140 PCLBUZ0 INTP6 37 P120 ANI19 38 P41 TI07 TO07 39 P40 TOOL0 40 RESET 41 P124 XT2 EXCLKS 42 P123 XT1 43 P137 INTP0 44 P122 X...

Page 41: ...MI_Amotech D1 _HDMI1 Q3202 NTR4501NT1G G D S DDC_SDA_4 AR3212 5 1 1 16W EOS_HMDI_TMDS_5 1OHM D3201 MHL A2 C A1 R3201 10K MHL AR3206 47K 1 16W D3203 A2 C A1 D3202 30V MBR230LSFT1G MHL CK _HDMI2 R3259 33 HDMI_EXT_EDID R3269 1K HDMI_EXT_EDID D0 _HDMI1 5V_HDMI_4 CEC_REMOTE D1 _HDMI2 5V_HDMI_4 R3265 100K DDC_SCL_1 R3267 100K NON_MHL CEC_REMOTE Q3203 MMBT3904 NXP HDMI_EXT_EDID E B C C3203 10uF 10V MHL I...

Page 42: ...P_OUT 3 3V_NORMAL R3409 100 HP_OUT C328 1000pF SPDIF_OUT DOUT1 VA3806 5 5V TP3400 C325 0 047uF JK3403 PEJ034 01 6B T_TERMINAL2 7B B_TERMINAL2 5 T_SPRING 4 R_SPRING 3 E_SPRING R3801 1K SOC_TX VA3800 5 6V Default_Amotech SOC_RX HP_LOUT COMP1_Pb VA3805 5 5V R3802 1K DOUT1 3 3V_NORMAL TP3401 VA3802 5 6V Default_Amotech R3806 10K VA3801 5 6V Default_Amotech P3400 12507WS 04L 1 2 3 4 5 R3827 10K OPT COM...

Page 43: ...09 10K 5 C4009 0 1uF 16V OPT BT_RESET R4002 100 C4015 5pF 50V WIFI_DMDP_5pF D4000 RCLAMP0502BA OPT WIFI_DP 3 5V_ST C4002 0 1uF OPT KEY2 P4000 SMAW200 H18S5 14 KEY2 9 SDA 4 USB_DM 18 GND 13 GND 8 GND 3 BT_RESET 17 LED_R 12 KEY1 7 WOL 2 3 5V_WIFI 16 3 5V_ST 11 SCL 6 USB_DP 1 GND 15 IR 10 GND 5 NC 19 GND R4020 2K IC4001 AP2191WG 7 3 FLG 2 GND 4 EN 1 OUT 5 IN 3 5V_ST R4021 33 R4022 10K OPT WIFI_EN C40...

Page 44: ...05 USB_DM3 D4303 5V USB_ESD_SD05 5V_USB_3 USB_DP3 USB_DP2 JK4300 3AU04S 305 ZC LG 1 2 3 4 5 C4323 22uF 10V C4311 22uF 10V C4322 10uF 10V C4310 10uF 10V D4302 RCLAMP0582B USB_ESD_0582B D4300 RCLAMP0582B USB_ESD_0582B D4302 1 RCLAMP0502BA USB_ESD_0502BA D4300 1 RCLAMP0502BA USB_ESD_0502BA D4302 2 DF3D6 8MS Multi_Toshiba D4300 2 DF3D6 8MS Multi_Toshiba MID_LG1311 1 2014 05 28 USB 2 3 PAGE 13 MAX 1 5A...

Page 45: ... 16V 5V_NORMAL USB_CTL1 USB_OCD1 JK4500 3AU04S 305 ZC LG 1 2 3 4 5 D4501 5V USB_ESD_SD05 C4502 22uF 10V OPT R4502 14K 1 IC4500 BD2242G 3 EN 2 GND 4 OC 1 VIN 6 VOUT 5 ILIM R4501 4 7K C4501 10uF 10V D4500 RCLAMP0582B USB_ESD_0582B D4500 1 RCLAMP0502BA USB_ESD_0502BA D4500 2 DF3D6 8MS Multi_Toshiba 1 MID_LG1311 USB 1 DVR 2014 05 28 PAGE 14 USB1 2 0 MAX 1 5A OCP USB1 value change 10K 2 63V 4 7K 2 97V ...

Page 46: ... RGB_IO 17 SYNC_GND1 18 SYNC_GND2 19 SYNC_OUT 20 SYNC_IN 21 COM_GND 22 AV_DET DTV MNT_L_OUT VA4609 5 5V EU R8904 75 1 16W EU C4601 1000pF 50V EU SC_L_IN VA4608 5 6V EU_Amotech SC_R_IN SC_DET C4604 0 1uF EU SC_B R4602 100 EU VA4605 5 5V EU SC_R L4600 BLM18PG121SN1D EU SC_FB DTV MNT_R_OUT L4601 BLM18PG121SN1D EU VA4611 5 6V EU_Amotech VA4601 5 6V EU_Amotech DTV MNT_V_OUT VA4602 5 6V EU_Amotech SC_CV...

Page 47: ...RTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC C5000 0 1uF 16V D5002 5 5V LAN_ESD D5001 5 5V LAN_ESD C5001 0 01uF 50V JK5000 RJ45VT 01SN002 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 D5000 5 5V LAN_ESD EPHY_RDN EPHY_RDP EPHY_TDN EPHY_TDP D5003 5 5V LAN_ESD PAGE 16 Ethernet Block Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE I...

Page 48: ...10OUT 30 AVDD33_2 31 CKXTAL1 32 CKXTAL2 5 MDI 1 8 RXDV 6 MDI 1 4 MDI 0 2 AVDD10OUT 33 EP R5204 2 49K 1 C5200 4 7uF 10V ET_COL SNI R5200 3 3K R5202 1M OPT LAN_JACK_POWER C5208 0 1uF 16V C5211 0 1uF 16V ET_COL SNI EPHY_TDP EPHY_ACTIVITY EPHY_RXD0 EPHY_RDP 3 5V_WOL EPHY_RXD1 EPHY_CRS_DV R5217 3 3K EPHY_TXD1 EPHY_MDC C5204 0 1uF C5209 33pF EPHY_TXD0 R5210 33 R5209 51 C5201 0 1uF 16V R5223 33 IC5201 AP...

Page 49: ...MP 3 3V_NORMAL C5605 22000pF 50V AMP_RESET_N POWER_DET R5601 10K AMP_MUTE_MICOM AUD_LRCH I2C_SDA1 L5602 NRS6045T100MMGK 10 0uH R5608 4 7K C5610 1uF 10V C5608 22000pF 50V C5617 0 47uF 50V R5603 3 3 1 10W C5612 390pF 50V 3 3V_NORMAL L5605 NRS6045T100MMGK 10 0uH 13V_AMP SPK_L 10uF C5607 25V SPK_L AMP_MUTE SPK_R R5690 100 AMP_MUTE_PWR_DET L5604 NRS6045T100MMGK 10 0uH SPK_R L5600 UBW2012 121F L5601 BLM...

Page 50: ...T_MUTE_NXP E B C Q6001 MMBT3904 NXP EU E B C SCART_ROUT R6011 2 2K EU L6000 EU R6008 33K EU R6002 470K OPT R6000 2 2K EU C6000 1uF 25V EU DTV MNT_R_OUT SCART_MUTE SCART_LOUT C6004 0 1uF 50V EU R6004 33K EU DTV MNT_L_OUT DTV MNT_L_OUT R6001 10K EU Q6000 MMBT3904 NXP EU E B C R6014 1K EU IC6000 AZ4580MTR E1 EU 3 IN1 2 IN1 4 VEE 1 OUT1 5 IN2 6 IN2 7 OUT2 8 VCC C6003 33pF EU C6001 4 7uF 10V EU R6003 1...

Page 51: ...OUT 3 OUTR 2 INR 4 GND_1 1 INR 6 VSS 5 MUTE 7 CN 8 CP 9 VDD 10 GND_2 11 UVP 12 OUTL 13 INL 14 INL R6106 43K 1 HP_OUT R6101 10K HP_OUT C6102 1uF 10V HP_OUT R6103 43K 1 HP_OUT C6104 18pF HP_OUT C6101 1uF 10V HP_OUT R6105 4 7K HP_OUT 3 3V_NORMAL R6102 43K 1 HP_OUT C6109 18pF HP_OUT C6105 1uF 10V HP_OUT C6103 1uF 10V HP_OUT SIDE_HP_MUTE C6108 10pF 50V HP_OUT R6100 10K HP_OUT C6107 0 1uF 16V HP_OUT 3 3...

Page 52: ...ACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC PCM_5V_CTL 5V_CI_ON IC6200 AP2151WG 7 CI 3 FLG 2 GND 4 EN 1 OUT 5 IN 5V_NORMAL R6219 10K CI C6210 1uF 25V CI R6218 10K CI R6217 100 CI C6211 0 1uF 16V CI PAGE 21 CI POWER ENABLE CONTROL Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 53: ...MMC_DATA 1 R6317 1 2K JAPAN R6300 22 JAPAN R6315 1 2K JAPAN L6301 BLM18PG121SN1D JAPAN C6300 0 1uF 16V JAPAN SMARTCARD_CLK SD_EMMC_DATA 0 R6306 OPT R6318 1 2K OPT R6305 2 7K JAPAN L6300 BLM18PG121SN1D JAPAN C6301 10uF 10V JAPAN AR6300 33 JAPAN 3 3V_NORMAL 3 3V_NORMAL C6306 0 1uF 16V JAPAN C6302 0 1uF 16V JAPAN 3 3V_NORMAL R6314 1K JAPAN SMARTCARD_RST SD_EMMC_DATA 2 C6303 0 1uF 16V JAPAN R6319 1 2K...

Page 54: ..._ERROR R6501 100 TU_M W FE_DEMOD1_TS_DATA 5 IF_AGC_TU TU_CVBS RF_SWITCH_CTL R6507 1K OPT FE_DEMOD1_TS_ERROR L6503 BLM18PG121SN1D TU_M W 3 3V_NORMAL FE_DEMOD1_TS_DATA 6 LNB_TX L6500 BLM18PG121SN1D C6507 0 1uF 16V TU_M W FE_DEMOD2_TS_DATA C6502 0 1uF 16V TU_ALL_IntDemod_H15 FE_DEMOD2_TS_SYNC R6516 200 TU_ALL_2178B I2C_SCL6 3 3V_NORMAL R6506 1K TU_ALL_IntDemod C6519 33pF C6503 47pF 50V OPT C6505 47pF...

Page 55: ..._Core C6705 2700pF 50V TU6702 TDJM G301D TU_M_EU 1 3 3V 2 NC_1 3 AIF_AGC 4 SCL_RF 5 SDA_RF 6 AIF P 7 AIF N 8 SIF 9 CVBS 10 NC_2 11 3 3V_RF 12 ERROR 13 GND_1 14 MCLK 15 SYNC 16 VALID 17 D0 18 D1 19 D2 20 D3 21 D4 22 D5 23 D6 24 D7 25 RESET_DEMOD 26 3 3V_DEMOD 27 SCL_DEMOD 28 1 2V_DEMOD 29 NC_3 30 SDA_DEMOD 31 LNB 47 SHIELD 32 GND B1 B1 A1 A1 C6702 1000pF 630V TU_H M_CN TDJW J301F TU6703 TU_W_JP 47 ...

Page 56: ...D6902 1 30V SS23L LNB_TSC C6900 0 1uF LNB Q6901 PMV48XP G D S C6913 0 1uF 50V C6914 0 1uF 50V Q6902 MMBT3904 NXP E B C R6910 10K 1 16W 5 C6915 4 7uF 10V OPT 13V_M 13V R6909 150K R6908 36K 3 3V_NORMAL IC6900 1 A8303SESTR T 4M LNB_Allegro 1 VCP 3 NC_1 7 SCL 9 ADD 10 TONECTRL 11 TCAP 12 ISET 13 VREG 14 GND 15 VIN 16 LX 17 GNDLX 18 NC_2 19 NC_3 20 BOOST 5 TDO 8 SDA 6 IRQ 4 TDI 2 LNB 21 EP GND L6900 15...

Page 57: ... TX1P R7220 33 OPT TXC2P TX21P R7218 33 LGD_T Con_Scanning TXC1P TX22P TXB4N TX0N TXD3N TX13N TXA1N TX10N TXC1N TX22N TXA1P TX10P R7210 33 OPT TXACLKN TX8N R7204 0 OPT TXB0N TX5N TXC4P TX18P TXA0N TX11N TXD3P TX13P TXD4N TX12N TXBCLKP TX2P TXA3N TX7N 3 3V_NORMAL TXA2N TX9N PWM_DIM L7200 UBW2012 121F AUO_SHARP P7201 SP14 11592 01 51Pin LVDS_51PIN_FLIP_TYPE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 ...

Page 58: ... MCLK R7731 0 EPI_V14 VCOM_FB2 SWN C7745 1uF 10V R7734 0 EPI_V14 32 _V12_V13 C7718 15pF 50V EO C7717 15pF 50V GMA5 R7717 22K TXD2N TX15N C7707 560pF 50V C7708 560pF 50V C7709 560pF 50V C7704 560pF 50V C7721 560pF 50V C7716 560pF 50V IC7703 TPS65175B 1 REVERSE 2 GCLK 3 MCLK 4 GST 5 E O 6 GND 7 VGL 8 SWN 9 CTRLN 10 RST 11 OUTB 12 SWB 13 AGND 14 PVINB 15 AVIN 16 PVINH 17 SWH 18 OUTH 19 PGNDH 20 SCL 2...

Page 59: ..._68 K3 NC_69 K12 NC_70 K13 NC_71 K14 NC_72 L1 NC_73 L2 NC_74 L3 NC_75 L12 NC_76 L13 NC_77 L14 NC_78 M1 NC_79 M2 NC_80 M3 NC_81 M7 NC_82 M8 NC_83 M9 NC_84 M10 NC_85 M11 NC_86 M12 NC_87 M13 NC_88 M14 NC_89 N1 NC_90 N3 NC_91 N6 NC_92 N7 NC_93 N8 NC_94 N9 NC_95 N10 NC_96 N11 NC_97 N12 NC_98 N13 NC_99 N14 NC_100 P1 NC_101 P2 NC_103 P8 NC_104 P9 NC_105 P11 NC_106 P12 NC_107 P13 NC_108 P14 IC8100 THGBMBG...

Page 60: ...UC 20S 02 010L OPT C6808 0 1uF RS232C C6809 0 1uF RS232C C6810 0 1uF RS232C DOUT1 SOC_RX R6821 100 RS232C 3 5V_ST C6813 0 1uF RS232C IC6801 MAX3232CDR EAN41348201 RS232C 3 C1 2 V 4 C2 1 C1 6 V 5 C2 7 DOUT2 8 RIN2 9 ROUT2 10 DIN2 11 DIN1 12 ROUT1 13 RIN1 14 DOUT1 15 GND 16 VCC R6820 100 RS232C SOC_TX RIN1 ZD6802 ADUC 20S 02 010L 20V OPT C6811 0 1uF RS232C PAGE 32 RS 232C Control INTERFACE Copyright...

Page 61: ...C315 4 7uF EU R319 75 1 EU 1005 C307 10pF 50V OPT COMP1_Y_IN_SOC SC_ID SC_L_IN R339 100K EU SC_CVBS_IN_SOY R320 10K 1 EU SC_B R316 2 7K EU L302 EU 1uH C362 0 1uF EU R302 75 EU SC_ID_SOC C363 0 1uF EU AUAD_R_CH2_IN SC_CVBS_IN C329 2 2uF 10V EU C320 0 047uF EU SC_CVBS_IN_SOY SC_R R331 33 EU AUAD_L_CH2_IN R313 75 1 EU 1005 3 3V_NORMAL C326 0 047uF EU COMP1_PB_IN_SOC DTV MNT_V_OUT_SOC C327 1000pF EU R...

Page 62: ......

Page 64: ...n 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 Bulletin in GCSC Sys...

Page 65: ...ir Power Board or parts End Always 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 Revised date 1 13 Error symptom A Video error No video Normal audio A4 A1 A2 A7 A3 First of all Check whether all of cables between board is inserted properly or not Main B D Power B D LVDS or EPI Cable Speak...

Page 66: ... 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 3 Error symptom Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 67: ... B D Check Tuner soldering Normal Picture Y N Y Close Y Close By using Digital signal level meter By using Diagnostics menu on OSD Setting Set up Manual Tuning Check the Signal Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N Normal Picture Y Close N Standard Repair Process Established date Revised date 3 13...

Page 68: ...ternal device and cable Y External device Cable normal 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 Standard Repair Process Established date Revised date 4 13 5 Error symptom Copyright 2015 LG Electronics Inc All rights reserved...

Page 69: ...Jig pattern Generator Set top Box etc N Y Replace Main B D Screen normal Check screen condition by input External Input Component 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 and HDMI DVI by connecting Jig pattern Generator Set top Box etc Replace Main B D Screen normal N Y ...

Page 70: ...BY 8 8V Power on 13 2V N Y Normal voltage Replace Main B D Y OK Replace Main B D N Y Normal Check ST BY 3 5V at Main B D And Power output Voltage Power output voltage to Main B D is 8 8V at STBY Status 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 Stand By Red Operating Turn Off Close 7 Error symptom Copyright 201...

Page 71: ...IMER 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_UNKNOWN Power off by unknown status except listed ca...

Page 72: ... Board and 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 Standard Repair Process 9 Error symptom Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 73: ...Connect 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 13 2V Voltage Pin no 7 8 Replace Main B D In case of External Input signal error Check and fix external device Replace Main B D N End...

Page 74: ... C Check Repair Cable connection Connector solder Normal operating Check B 3 5V On Main B D A27 Normal Voltage Close N N Check 13 2v 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 11 Y Error symptom Copyright 201...

Page 75: ...xternal 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 Standard Repair Process 12 Error symptom Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 76: ...n proceed as shown in the solution manual For models without any fix information provide the description 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...

Page 77: ...ace remote controller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Established date Revised date 13 13 Standard Repair Process 14 Error symptom Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 78: ... A8 11 Check Link Cable LVDS reconnection condition A10 12 Adjustment Test pattern ADJ Key A12 13 A Video error_Vertical Horizontal bar residual image light spot Connection diagram A8 14 Check Link Cable LVDS reconnection condition A10 A11 15 Adjustment Test pattern ADJ Key A12 16 Appendix Defected Type caused by Main Inverter Module Exchange Main Board or LVDS EPI Cable A 1 5 17 Exchange Main Boa...

Page 79: ... video Checking method in menu when there is no audio A24 26 Voltage and speaker checking method when there is no audio A25 27 C Audio error_Wrecked audio discontinuation Voltage and speaker checking method in case of audio error A25 28 D Function error_ No response in remote controller key error Remote controller operation checking method A27 29 Display has error especially color V Com checking a...

Page 80: ...k LCD back light with naked eye A Video error_No video Normal audio After turning on the power and disassembling the case check with the naked eye whether you can see light from module holes A1 Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 81: ...udio A2 Established date Revised date A2 Check the Voltage between LED LED The voltage spec is in Power B D Spec sheet Refer the Power B D Spec sheet ex 55LF63 156 9V 235 0V Error symptom Content Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 82: ...l Check White Balance value A Video error_No video Normal audio ALL MODELS A3 Established date Revised date A3 Entry method 1 Press the ADJ button on the remote controller for adjustment 2 Enter into White Balance of item 10 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 Error symptom Content Copyright 2015 LG Electronics...

Page 83: ...te Revised date A4 Check the 13 2V for Audio 12 Pin Power Board Main Board SMAW200 H12S5K BK 1 Power on 2 PWM 2 3 GND 4 D13V 5 D13V 6 D13V 7 A13V 8 A13V 9 GND 10 GND 11 DRV ON Inverter ON 12 PWM 1 Error symptom Content Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 84: ... 15dB 20dB etc Standard 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 A6 Error symptom Content Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 85: ...top 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 A7 Error symptom Content Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 86: ...tal bar residual image light spot As the part connecting to the external input check the screen condition by signal A8 Established date Revised date A8 ALL MODELS Error symptom Content Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 87: ...dition A Video error_Color error Check the contact condition of the Link Cable especially dust or mis insertion A10 Established date Revised date A10 Error symptom Content Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 88: ...atterns 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 A12 Error symptom Content Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 89: ...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 LVDS or EPI Cable or Main B D 1 Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 90: ...ion Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION GRADATION Abnormal Display Appendix Exchange LVDS or EPI Cable or Main B D 2 Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 91: ...ss damage Crosstalk Crosstalk Press damage Panel Mura Light leakage Press damage A 4 5 Un repairable Cases In this case please exchange the module Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 92: ...k 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 A 5 5 Un repairable Cases In this case please exchange the module Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 93: ...r _No power A17 Established date Revised date A17 ST BY condition Red Power ON condition Turn Off Front LED control Menu General Standby Light ON Off Error symptom Content Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 94: ...Main Power Voltage 4 5 6 Pin Power on DC ON status 13 2V STBY status 8 8V 12 Pin Power Board Main Board SMAW200 H12S5K BK 1 Power on 2 PWM 2 3 GND 4 D13V 5 D13V 6 D13V 7 A13V 8 A13V 9 GND 10 GND 11 DRV ON Inverter ON 12 PWM 1 Error symptom Content Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 95: ...vised date A19 Check power on pin is high 12 Pin Power Board Main Board SMAW200 H12S5K BK 1 Power on 2 PWM 2 3 GND 4 D13V 5 D13V 6 D13V 7 A13V 8 A13V 9 GND 10 GND 11 DRV ON Inverter ON 12 PWM 1 Error symptom Content Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 96: ...tem 3 Standard 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 A22 Error symptom Content Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 97: ...Select TV Speaker 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 A24 Error symptom Content Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 98: ... GND and output terminal the speaker is normal Standard Repair Process Detail Technical Manual Voltage and speaker checking method when there is no audio C Audio error_No audio Normal video A25 Established date Revised date A25 12 Pin Power Board Main Board SMAW200 H12S5K BK 1 Power on 2 PWM 2 3 GND 4 D13V 5 D13V 6 D13V 7 A13V 8 A13V 9 GND 10 GND 11 DRV ON Inverter ON 12 PWM 1 Error symptom Conten...

Page 99: ...ess 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 A27 P4000 1 GND 2 3 5V_WIFI 3 BT_RESET 4 WIFI_DM 5 NC 6 WIFI_DP 7 WOL WIFI_POWER_ON 8 GND 9 EYE_SDA 10 GND 11 EYE_SCL 12 KEY1 13 GND 14 KEY2 15 IR 16 3 5V_ST 17 LED_R 18 GND Error symptom Content Copyright 2015 LG Electron...

Page 100: ...or A28 Established date Revised date A28 Entry method 1 Press the ADJ button on the remote controller for adjustment 2 Enter into V Com of item 14 3 Check and adjust V Com value Error symptom Content Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

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