LG 49LF640 Series Service Manual Download Page 73

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Contents of Standard Repair Process Detail Technical Manual

No.

Error symptom

Content

Page

Remarks

B. Power error_No power

Check front display LED

A17

Check power input Voltage & ST-BY Voltage

A18

Checking method when power is ON

A18

POWER BOARD voltage measuring method

B. Power error_Off when on, off while
viewing

POWER OFF MODE checking method

A22

B. Power error_Off when on, off while
viewing

POWER BOARD PIN voltage checking method

A18

C. Audio error_No audio/Normal video

Checking method in menu when there is no
audio

A24

Voltage and speaker checking method when
there is no audio

A25

C. Audio error_Wrecked
audio/discontinuation

Voltage and speaker checking method in case of
audio error

A25

D. Function error_ No response in remote
controller

Normal Remote controller operation checking
method

A27

Motion Remote controller operation checking
method

A29

Continued from previous page

LGE Internal Use Only

Summary of Contents for 49LF640 Series

Page 1: ...49LF640 49LF6400 DA 49LF640T DA 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 CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL ...

Page 2: ...nics Inc All rights reserved Only for training and service purposes CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 14 BLOCK DIAGRAM 21 EXPLODED VIEW 32 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: ...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: ...ed for about 20 minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC 4 General Specification No Item Specification Remark 1 Market Taiwan Colombia Panama 2 Broadcasting system Digital DVB T T2 Analog NTSC M PAL M PAL N Taiwan NTSC M Colombia DVB T T2 3 Available Channel BAND NTSC VHF UHF CATV D...

Page 7: ...15 625 50 13 5 SDTV 576I 6 720 576 31 25 50 13 5 SDTV 576P 7 1280 720 37 5 50 74 25 HDTV 720P 8 1280 720 45 00 60 00 74 25 HDTV 720P 9 1280 720 44 96 59 94 74 176 HDTV 720P 10 1929 1080 28 125 50 74 25 HDTV 1080I 11 1920 1080 33 75 60 00 74 25 HDTV 1080I 12 1920 1080 33 72 59 94 74 176 HDTV 1080I 13 1920 1080 56 25 50 148 5 HDTV 1080P 14 1920 1080 67 50 60 148 50 HDTV 1080P 15 1920 1080 67 432 59 ...

Page 8: ...0 00 HDTV 720P DVB 12 1920 x 1080 28 12 50 00 HDTV 1080I DVB 13 1920 x 1080 33 72 59 94 HDTV 1080I 14 1920 x 1080 33 75 60 00 HDTV 1080I 15 1920 x 1080 26 97 23 97 HDTV 1080P 16 1920 x 1080 27 00 24 00 HDTV 1080P 17 1920 x 1080 33 71 29 97 HDTV 1080P 18 1920 x 1080 33 75 30 00 HDTV 1080P 19 1920 x 1080 56 25 50 00 HDTV 1080P DVB 20 1920 x 1080 67 43 59 94 HDTV 1080P 21 1920 x 1080 67 5 60 00 HDTV ...

Page 9: ...rame Sequential 3 1920 1080 33 75 60 00 74 25 HDTV 1080I 2D to 3D Side by Side half Top Bottom 4 1920 1080 28 125 50 00 74 25 HDTV 1080I 2D to 3D Side by Side half Top Bottom 5 1920 1080 27 00 24 00 74 25 HDTV 1080P 2D to 3D Side by Side half Top Bottom Checkerboard 6 1920 1080 28 12 25 74 25 HDTV 1080P 2D to 3D Side by Side half Top Bottom Checkerboard 7 1920 1080 33 75 30 00 74 25 HDTV 1080P 2D ...

Page 10: ...ide by side Full SDTV 480P 7 720 576 576p 31 25 50 27 17 18 Top and Bottom Side by side half Secondary SDTV 576P Secondary SDTV 576P 8 62 5 50 54 17 18 Frame packing Line alternative Secondary SDTV 576P SDTV 576P 9 31 25 50 54 17 18 Side by side Full SDTV 576P 10 720 1440 576 576i 15 625 50 27 21 Top and Bottom Side by side half Secondary SDTV 576I Secondary SDTV 576I 11 31 25 50 54 21 Frame packi...

Page 11: ...74 25 33 Top and Bottom Side by side half Secondary HDTV 1080P Secondary HDTV 1080P 29 56 24 25 148 5 33 Frame packing Line alternative Secondary HDTV 1080P HDTV 1080P 30 28 12 25 148 5 33 Side by side Full HDTV 1080P 31 33 716 33 75 29 976 30 00 74 18 74 25 34 Top and Bottom Side by side half Primary HDTV 1080P Secondary HDTV 1080P 32 67 432 67 5 29 976 30 00 148 35 148 5 34 Frame packing Line al...

Page 12: ...9 94 74 176 2D to 3D Side by Side half Top Bottom HDTV 1080I 6 1920 1080 28 12 50 74 25 2D to 3D Side by Side half Top Bottom HDTV 1080I 7 1920 1080 67 500 60 148 50 2D to 3D Side by Side half Top Bottom HDTV 1080P 8 1920 1080 67 432 59 94 148 352 2D to 3D Side by Side half Top Bottom HDTV 1080P 9 1920 1080 27 000 24 000 74 25 2D to 3D Side by Side half Top Bottom HDTV 1080P 10 1920 1080 28 12 25 ...

Page 13: ... Proposed 1 1920 1080 33 75 30 74 25 2D to 3D Side by Side Half Top Bottom Checkerboard Row Interleaving Column Interleaving Photo side by Side half Top Bottom HDTV 1080P 6 8 DLNA Input 3D No Resolution H freq kHz V freq Hz Pixel clock MHz 3D input proposed mode Proposed 1 1920 1080 33 75 30 74 25 2D to 3D Side by Side Half Top Bottom Checkerboard Row Interleaving Column Interleaving Photo side by...

Page 14: ...hite pattern In this status you can maintain Heat Run useless any pattern generator Notice if you maintain one picture over 20 minutes Especially sharp distinction black with white pattern 13Ch or Cross hatch pattern 09Ch then it can appear image stick near black level 3 Adjustment items 3 1 PCB Assembly Adjustment MAC Address ESN Widevine HDCP1 4 HDCP 2 0 Download EDID The Extended Display Identi...

Page 15: ...ode Manual ADC Calibration When OTP mode is failed ADC calibration should be OK by using External mode If you want re adjust for ADC Enter Service Mode by pushing ADJ key Enter Internal ADC mode by pushing key at 9 ADC Calibration Adjustment protocol Order Command Set response 1 Inter the Adjustment mode aa 00 00 a 00 OK00x 2 Change the Source xb 00 40 b 00 OK40x Adjust 480i Comp1 Adjust 1080p Com...

Page 16: ...MI 3 Check sum 0x40 0xFB CEA Block 0x21 30 EDID data for FHD 2D DTS HD 10Bit 60 65LF63 Series Model name LG TV HDMI 1 EDID table 0x40 0xD4 LVDS supports 10bit support Deep color Total Block LVDS supports 10bit support Deep color CEA Block 0x23 B8 0x24 2D 1 HDMI 1 Check sum 0x40 0xD4 CEA Block 0x21 10 2 HDMI 2 Check sum 0x40 0xC4 CEA Block 0x21 20 3 HDMI 3 Check sum 0x40 0xB4 CEA Block 0x21 30 EDID...

Page 17: ... 11 White Balance then press the cursor to the right KEY When KEY is pressed 206 Gray internal pattern will be displayed 4 Adjust Cool modes Fix the one of R G B gain to 192 default data and decrease the others If G gain is adjusted over 172 and R and B gain less than 192 Adjust is O K If G gain is less than 172 Increase G gain by up to 172 and then increase R gain and G gain same amount of increa...

Page 18: ...remote controller Check AA battery before test A recommendation is that a tester change battery every lots 5 3 2 Test 1 Make pairing with TV set by pressing Mute START key on RCU 2 Check a cursor on screen by pressing ENTER or OK key of RCU 3 Stop paring with TV set by pressing VOL STOP key 5 4 3D pattern test 5 4 1 Test equipment 1 Pattern Generator MSHG 600 or MSPG 6100 HDMI 1 4 support 2 Patter...

Page 19: ...rom 0 to 300 or not If it doesn t change the value the sensor is also defected one You have to replace it Caution Don t push The INSTOP KEY after completing the function inspection 6 GND and HI POT Testing 6 1 GND HI POT auto check preparation Check the connection between set and power cord 1 Check the POWER CABLE and SIGNAL CABE insertion condition 6 2 GND HI POT auto check 1 Pallet moves in the ...

Page 20: ...Value default 128 7 2 White balance Value CENTER DEFAULT C50 0 W50 R Gain 192 192 192 G Gain 192 192 192 B Gain 192 192 192 R Cut 64 64 64 G Cut 64 64 64 B Cut 64 64 64 8 USB DOWNLOAD epk file download 1 Put the USB Stick to the USB socket 2 Press Menu key and move General before 10 2 Step Set USB Expert Mode Enabled IN START System 3 USB Expert Mode 3 Press number key 7 Press 7 times 4 Select dow...

Page 32: ...racteristics 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 200 400 800 540 521 530 820 121 120 LV1 900 350 A10 Set Stan...

Page 33: ..._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 AD...

Page 34: ... 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 35: ...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 _HDMI3...

Page 36: ...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 37: ...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 VDDQ...

Page 38: ...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 G...

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: ...12 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 X2 EXCLK 45 P121 X1 46 REGC...

Page 41: ...HMDI_TMDS_5 1OHM D3201 MHL A2 C A1 R3201 10K MHL AR3206 47K 1 16W D3203 HDMI_SW_SUZHOU 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 IC3203 M24C02 RMN6T HDMI_EXT_EDID_ST 3 E2 2 E1 4 VSS 1 E0 5 SD...

Page 42: ..._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 COMP...

Page 43: ...9 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 C401...

Page 44: ...5 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: ...TS 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 right reserved Only for training and service purposes LGE I...

Page 47: ...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 48: ...P 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 BLM1...

Page 49: ...UT 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 3V...

Page 50: ...RF 12 ERROR 13 GND_1 14 MCLK 15 SYNC 16 VALID 17 DATA 18 NC_3 19 NC_4 20 NC_5 21 NC_6 22 NC_7 23 NC_8 24 NC_9 25 RESET_DEMOD 26 3 3V_DEMOD 27 SCL_DEMOD 28 1 2V_DEMOD 29 NC_10 30 SDA_DEMOD 47 SHIELD B1 B1 A1 A1 R6401 1 0 TU_CN TU6402 2 TDJM K301F TU_M_CO 1 3 3V 2 NC_1 3 NC_2 4 SCL_RF 5 SDA_RF 6 NC_3 7 NC_4 8 SIF 9 CVBS 10 NC_5 11 3 3V_RF 12 ERROR 13 GND_1 14 MCLK 15 SYNC 16 VAILD 17 D0 18 D1 19 D2 ...

Page 51: ..._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 52: ... 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 53: ...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 21...

Page 54: ...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 THGBMBG5...

Page 55: ...C 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 56: ......

Page 58: ... power 6 7 Off when on off while viewing power auto on off 7 8 C Audio error No audio Normal video 8 9 Wrecked audio discontinuation noise 9 10 D Function error Normal Motion Remote Controller operating error 10 11 External device recognition error 11 12 E Noise Circuit noise mechanical noise 12 13 F Exterior error Exterior defect 13 First of all Check whether there is SVC Bulletin in GCSC System ...

Page 59: ...k 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 Error symptom A Video error No video Normal audio A5 A4 First of all Check whether all of cables between board is inserted properly or not Main B D Power B D LVDS EPI Cable Speaker Cable IR Wi Fi combo cab...

Page 60: ...replace MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio A5 Established date Revised date 2 13 Error symptom Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 61: ... Check Tuner soldering Normal Picture Y N Y Close Y Close By using Digital signal level meter By using Diagnostics menu on OSD Menu Quick Channels 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 Normal Picture Y Close N A7 Standard Repair Process Established date Revised date 3 13 Error symptom ...

Page 62: ...k external device and cable Y External device Cable normal HDMI 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 Standard Repair Process Established date Revised date 4 13 Error symptom Copyright ⓒ 2015 LG Electronics Inc All right reserved Only...

Page 63: ...and HDMI by connecting Jig pattern Generator Set top Box etc N Y Replace Main B D Screen normal Check screen condition by input External Input Component HDMI Request repair for external device Component error HDMI Connect other external device and cable Check normal operation of External Input Component and HDMI by connecting Jig pattern Generator Set top Box etc Replace Main B D Screen normal N Y...

Page 64: ...tage of each output of Power B D N Y Normal voltage Replace Main B D Y OK Replace Main B D N Y Normal Check ST BY Voltage D13V Replace Power B D N Y Normal voltage Replace Power B D Y A17 A18 A5 Standard Repair Process Established date Revised date 6 13 Error symptom Stand By Red or No color Close A18 Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE...

Page 65: ...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_U...

Page 66: ...pair parts Check Speaker disconnection N Y Connect Speaker to Main cable Replace MAIN Board End C Audio error No audio Normal video A24 A25 Disconnection Established date Revised date 8 13 Error symptom Standard Repair Process Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 67: ... Input 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 A13V Voltage Replace Main B D In case of External Input signal error Check and fix external device Replace Main B D N End Esta...

Page 68: ...B D Y A27 Standard Repair Process Established date Revised date 10 13 Error symptom Y Y N 2 Motion Remote control operating error Check Motion R C itself Operation Normal operating Y Check R C Operating When turn off light in room Check Replace Baterry of R C Check Repair Cable connection Connector solder Normal operating Check 3 5V_WIFI On Main B D A29 Normal Voltage Close N Check 13V on Power B ...

Page 69: ...fix external device cable HDMI 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 Error symptom Standard Repair Process Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 70: ...lace remote controller Remote controller damage Stand dent Replace stand F Exterior defect Exterior defect Established date Revised date 13 13 Error symptom Standard Repair Process Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 71: ...n proceed as 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 noise in the Owners Manual E Noise Circuit noise mechanical noise Established date Revised date 12...

Page 72: ...ner Checking Part A9 11 Check Link Cable LVDS EPI reconnection condition 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 EPI reconnection condition 15 Adjustment Test pattern ADJ Key A12 16 Appendix Defected Type caused by T Con Inverter Module Exchange T Con Board 1 A 1 5 17 Exchange T Con Boa...

Page 73: ...OWER BOARD PIN voltage checking method A18 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 Normal Remote controller operation ch...

Page 74: ...tom Content 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 Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 75: ...the DC D13V A13V 18 Pin Power Board Main Board SMAW200 H12S5K 1 Power on 2 PDIM 2 3 GND 4 D13V 5 D13V 6 D13V 7 A13V 8 A13V 9 GND 10 GND 11 DRV_ON 12 PDIM 1 13 GND 14 GND 15 GND 16 L DIM0_SCLK 17 L DIM0_VS 18 L DIM0_MOSI Power Board Shape is different of models Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 76: ... 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 Error symptom Content Established date Revised date Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 77: ...stop 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 Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 78: ...ntal 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 ALL MODELS Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 79: ...oltage from 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 Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 80: ... 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 A12 Established date Revised date Error symptom Content Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 81: ...older 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 A 1 5 Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 82: ... Section Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION GRADATION Abnormal Display Appendix Exchange T Con Board 2 A 2 5 Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 83: ...Exchange LED driver Board PSU No Light Dim Light Dim Light Dim Light No picture Sound Ok A 3 5 Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 84: ...ess damage Crosstalk Crosstalk Press damage Panel Mura Light leakage Press damage Un repairable Cases In this case please exchange the module A 4 5 Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 85: ...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 Module itself 2 Un repairable Cases In this case please exchange the module A 5 5 Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 86: ... power A17 Established date Revised date Error symptom Content Be careful LF63 LF64 LF65 LF72 Models have a Standby Light Control UI ST BY condition On Power ON condition Off Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 87: ...dard Repair Process Detail Technical Manual Check power input voltage and ST BY Voltage B Power error _No power A18 Established date Revised date Error symptom Content When st by only D13V is normally on Output 9 5 9 9V Check the DC D13V A13V Power on Power Board Shape is different of models Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal ...

Page 88: ... item 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 Error symptom Content Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 89: ...tion of the Menu 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 Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 90: ...r Board If there is no input voltage remove the cable and check the connector 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 Standard Repair Process Detail Technical Manual Voltage and speaker checking method when there is no audio C Audio error_No audio Normal video ALL MODELS A25 Established date...

Page 91: ... Repair Process Detail Technical Manual Normal Remote controller operation checking method D Function error_ No response in remote controller ALL MODELS A27 Established date Revised date Error symptom Content P4000 1 GND 2 3 5V_WIFI 3 BT_RESET 4 USB_DM 5 NC 6 USB_DP 7 WOL 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 Copyright ⓒ 2015 LG Electronics Inc A...

Page 92: ...ain board 3 Check the 3 5V_WIFI on the terminal 2 4 Check the B T version value Standard Repair Process Detail Technical Manual Motion Remote controller operation checking method D Function error_ No response in remote controller ALL MODELS A29 Established date Revised date Error symptom Content Copyright ⓒ 2015 LG Electronics Inc All right reserved Only for training and service purposes LGE Inter...

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