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LG 49LH6000 Service Manual Download Page 26

- 26 -

LGE Internal Use Only

Copyright  © 

 LG Electronics. Inc. All rights reserved.

Only for training and service purposes

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 Shock, Fire, or other Hazards. 

Do not modify the original design without permission of manufacturer.

IMPORTANT SAFETY NOTICE

200

400

800

540

521

530

120

LV

1

410

950

121

820

901

902

700

A10

A2

Summary of Contents for 49LH6000

Page 1: ...P NO MFL69375706 1601 REV00 CHASSIS LA66H MODEL 49LH6000 49LH6000 UB CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL LED TV SERVICE MANUAL Internal Use Only ...

Page 2: ...eserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 9 BLOCK DIAGRAM 17 EXPLODED VIEW 26 DISASSEMBLY 27 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: ...rior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety UL CSA CE IEC specification EMC FCC ICES CE IEC specification Wireless Wireless HD Specification Option No Item Specification Remark 1 Receiving system ATSC NTSC M 64 QAM 256 QAM 2 Available Channel VHF 2 13 UHF 14 69 DTV 2 69 CATV 1 135 CADTV 1 135 3 Video Input AC 100 240V 50 60Hz...

Page 7: ... 10 1920 1080 27 00 24 00 74 25 HDTV 1080P 11 1920 1080 33 71 29 97 74 176 HDTV 1080P 12 1920 1080 33 75 30 00 74 25 HDTV 1080P 13 1920 1080 67 432 59 94 148 352 HDTV 1080P 14 1920 1080 67 50 60 00 148 50 HDTV 1080P 5 1 2 HDMI Input PC DTV No Resolution H freq kHz V freq kHz Pixel clock MHz Proposed Remark HDMI PC DDC 1 640 350 70Hz 31 46 70 09 25 17 EGA Х 2 720 400 70Hz 31 46 70 08 28 32 DOS O 3 ...

Page 8: ... 27 027 SDTV 480P 5 1280 720 44 96 59 94 74 176 HDTV 720P 6 1280 720 45 00 60 00 74 25 HDTV 720P 7 1920 1080 33 72 59 94 74 176 HDTV 1080I 8 1920 1080 33 75 60 00 74 25 HDTV 1080I 9 1920 1080 26 97 23 97 74 176 HDTV 1080P 10 1920 1080 27 00 24 00 74 25 HDTV 1080P 11 1920 1080 33 71 29 97 74 176 HDTV 1080P 12 1920 1080 33 75 30 00 74 25 HDTV 1080P 13 1920 1080 67 43 59 94 148 352 HDTV 1080P 14 1920...

Page 9: ...be also performed in Final Assembly if needed Both Board level and Final assembly adjustment items can be check using In Start Menu 1 ADJUST CHECK 3 2 Final assembly adjustment White Balance adjustment RS 232C functionality check PING Test Factory Option setting per destination Ship out mode setting In Stop 3 3 Etc Ship out mode Service Option Default USB Download S W Update Option Service only IS...

Page 10: ... 4 Communication Port connection 1 Connect PCBA Jig RS 232C Port PC RS 232C Port 4 2 5 Download Caution You need to Access USB certification to key download 1 Models MAC Widevine ESN HDCP2 0 DTCP US Canada North America model 4 3 LAN Inspection 4 3 1 Equipment Condition Each other connection to LAN Port of IP Hub and Jig 4 3 2 LAN inspection solution LAN Port connection with PCB Network setting at...

Page 11: ...erated by Manufacturing Technology Group C Serial number D L must be conformed when it is produced in production line because serial number D L is mandatory by D book 4 0 Manual Download Model Name and Serial Number If the TV set is downloaded By OTA or Service man Sometimes model name or serial number is initialized not always It is impossible to download by bar code scan so It need Manual downlo...

Page 12: ... production line ⓒ Month Year Controlled on production line ex Monthly 01 01 Year 2016 1A ⓓ Model Name Hex LGTV ⓔ Checksum LG TV Changeable by total EDID data ⓕ Vendor Specific HDMI 5 2 4 1 EDID DTS FHD 2D 8bit 40 43 49 55LH600x xx Default PCM FHD 2D 8bit 40 43 49 55LH600x xx 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 00 FF FF FF FF FF FF 00 1E 6D a b 10 c 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26 20 0F 50...

Page 13: ... auto adj RS 232C protocol is needed 3 Adjust Remocon 4 Video Signal Generator MSPG 925F 720p 216 Gray Model 217 Pattern 78 Only when internal pattern is not available Color Analyzer Matrix should be calibrated using CS 1000 5 5 3 Equipment connection MAP 5 5 4 Adj Command Protocol Command Format START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS A STOP LEN Number of Data Byte to be sent CMD Command V...

Page 14: ...nal pattern will be displayed 4 One of R Gain G Gain B Gain should be fixed at 192 and the rest will be lowered to meet the desired value 5 Adj is performed in COOL MEDIUM WARM 3 modes of color temperature R fix adjustment Adjust modes Cool Fix the R gain to 210 default data and change the others G B Gain Adjust the R gain more than 210 If G gain or B gain is less than 0 R gain can adjust more tha...

Page 15: ... BOE Cool temp Spec is 13000K cool med warm x y x y x y spec 271 270 286 289 313 329 target 278 280 293 299 320 339 5 6 HDMI ARC Function Inspection 5 6 1 Test equipment Optic Receiver Speaker MSHG 600 SW 1220 HDMI Cable for 1 4 version 5 6 2 Test method 1 Insert the HDMI Cable to the HDMI ARC port from the master equipment HDMI2 2 Check the sound from the TV Set 3 Check the Sound from the Speaker...

Page 16: ...ow the message Copying files from memory 4 Updating is staring 5 Updating Completed The TV will restart automatically 6 If your TV is turned on check your updated version and Tool option If downloading version is more high than your TV have TV can lost all channel data In this case you have to channel recover If all channel data is cleared you didn t have a DTV ATV test on production line After do...

Page 17: ... NTP 7515 Digital Demod DIF Sub Micom R5F100GEAFB IR KEY Sensor IR KEY I2C HDMI MUX LVDS USB SPDIF OUT ETHERNET USB1 USB2 OCP 1 5A OCP 1 5A HDMI1 HDMI2 ARC REAR OPTIC LAN 51P DDR3 2133 4Gb x16 X_TAL 24MHz WIFI Only SUB ASSY USB_WIFI DDR3 2133 4Gb x16 HDMI3 SIDE CVBS YPbPr H P AV COMP REAR EEPROM 256Kb eMMC 5 0 4GB I2S I2C I2C I2C Analog Demod 1866 CVBS SIF X_TAL 32 768kHz ...

Page 18: ... rights reserved Only for training and service purposes 2 I2C Block Diagram IC101 M2 33Ω 3 3kΩ 3 3_NORMAL I2C_SDA1 I2C_SCL1 100Ω 33Ω 1 8kΩ 3 3_TUNER TU6700 TUNER I2C_SDA2 I2C_SCL2 33Ω 3 3kΩ 3 3_NORMAL I2C_SDA3 I2C_SCL3 IC5600 Audio AMP IC3000 Micom IC100 NVRAM ...

Page 19: ... 1 1V 6A DC DC Converter IC2301 Inductor 2uH 5A L2310 0 83A WiFi Ass Y 0 042A 0 013A IR Key Ass Y VDD33 AVDD_3P3 AVDD_AU33 AVDD_DMPLL AVDD_3P3_USB 0 285A LDO AZ1117EH IC2300 0 006A 1 8V 0 01A DVDD18_EMMC Tuner 0 205A Panel_Vcc 0 387A AVDDL_MOD AVDDL_DVI DVDD_DDR VDDC_1 14 VDDC_SRAM_1 2 L311 L309 L310 L301 L303 L306 L307 L314 L2307 5V 4A DC DC Converter Inductor 3 3uH 7 3A IC2304 L2315 USB OCP TJ22...

Page 20: ...eserved Only for training and service purposes 4 Tuner Block Diagram Tuner 3 3V_RF 3 IC101 M2 SCL_RF 1 SDA_RF 2 CVBS 4 IF_AGC 5 SIF 6 IF P 7 IF N 8 33Ω 3 3_TUNER 1 8kΩ K22 GPIO15 SCKM2 L21 GPIO14 SDAM2 3 3_TUNER 33Ω 0 047uF Y6 CVBS1 AD4 IFAGC AF5 SIFP AF4 VIFP AE4 VIFM ...

Page 21: ...hts reserved Only for training and service purposes 5 Video Audio In Block Diagram IC101 M2 R3 GIN1P P2 BIN1P SoC Side Jack Side R1 RIN1P W1 LINEIN_L2 W2 LINEIN_R2 V5 CVBS2 COMP2_Y AV_CVBS_IN COMP2_Pb COMP2_Pr COMP2_L_IN COMP2_R_IN Y6 CVBS1 AF5 SIFP TU_CVBS TU_SIF ...

Page 22: ...ice purposes 6 Audio Out Block Diagram IC101 M2 AUD_SCK AUD_LRCK AUD_LRCH I2C_SDA1 I2C_SCL1 AMP_RESET_N I2S_OUT_BCK C26 AMP Mute I2S_OUT_WS C25 I2S_OUT_SD D26 I2C_SDA1 I2C_SCL1 PWM1 B26 4P Wafer Optical Jack JK3400 LINEOUT_L2 W3 LINEOUT_R2 Y3 H P Jack JK3402 SPDIF_OUT D21 IC3000 Micom IC5600 Audio AMP ...

Page 23: ...7 HDMI IC101 M2 DDCDD_CK DDCDD_DA HOTPLUGD DDC_SCL_1 DDC_SDA_1 HDMI_HPD_5V_1 TMDS Data x3 Clock x1 HDMI 1 DDC_SCL_2 DDC_SDA_2 HDMI_HPD_5V_2 TMDS Data x3 Clock x1 HDMI 2 DDC_SCL_3 DDC_SDA_3 HDMI_HPD_5V_3 TMDS Data x3 Clock x1 HDMI 3 DDCDB_CK DDCDB_DA HOTPLUGB DDCDA_CK DDCDA_DA HOTPLUGA CEC 3 4V_ST Q3000 IC3000 Micom ...

Page 24: ...2 LVDS Tx R_ODD 5 LVB1N R_ODD 4 LVB1P R_ODD 3 LVB2N R_ODD 2 LVB2P R_ODD 1 LVBCLKN R_ODD 0 LVBCLKP G_ODD 7 LVB3N G_ODD 6 LVB3P G_ODD 5 LVB4N G_ODD 4 LVB4P G_ODD 1 LVA1N G_ODD 0 LVA1P B_ODD 7 LVA2N B_ODD 6 LVA2P B_ODD 5 LVACLKN B_ODD 4 LVACLKP B_ODD 3 LVA3N B_ODD 2 LVA3P B_ODD 1 LVA4N B_ODD 0 LVA4P PANEL 51P LVDS Wafer P7200 PANEL_VCC 10 10 ...

Page 25: ...training and service purposes IC101 M2 USB 1 USB 2 USB_DM2 USB_DP2 DM_P1 DP_P1 USB_DM1 USB_DP1 DM_P3 DP_P3 WIFI_DM WIFI_DP DM_P0 DP_P0 P4001 3 4V_WIFI WOL IC3000 Micom IR Key IR Key 2 LED R IC4301 OCP IC IC4302 OCP IC USB 5V_USB_1 USB 5V_USB_2 5V_NORMAL 5V_NORMAL 9 USB 2 0 WiFi IR Key ...

Page 26: ... characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock Fire or other Hazards Do not modify the original design without permission of manufacturer IMPORTANT SAFETY NOTICE 200 400 800 540 521 530 120 LV1 410 950 121 820 901 902 ...

Page 27: ...ight LG Electronics Inc All rights reserved Only for training and service purposes DISASSEMBLY 1 Disassemble parts Back Cover Disassemble screws 2 Disassemble parts Back Cover Bottom Disassemble screws Pull the upward Pull the upward ...

Page 28: ...TROUBLE SHOOTING GUIDE Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 29: ... Voltage Y Replace Inverter or Module N Repair Power B D or parts End Always check record S W Version and White Balance value before replace the Main B D Replace Main B D Re enter White Balance value Precaution 1 14 A Video error Video X Audio O A9 A1 A9 A4 A2 1 First of all Check whether all of cables between board is inserted properly or not Main B D Power B D LVDS Cable Speaker Cable IR B D Cab...

Page 30: ...Voltage Video X Audio X Check and Replace Main B D Y N End A9 2 14 2 A Video error Video X Audio O Check Power B D 13V output Repair or Replace Power B D or parts Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 31: ...t Top Box Different maker TV etc SVC Bulletin Replace Main B D Check Tuner soldering Normal Picture Y N Y Close Close By using Digital signal level meter By using Diagnostics menu on OSD All Settings Programmes Programmes Tuning Settings 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 ...

Page 32: ...ut External Input COMPONENT AV HDMI Y External device Cable normal External Input Component error Check external device and cable Y External device Cable normal HDMI error Check external device and cable Replace Main T con B D Replace Main T con B D N N A6 N Y End Replace module Or T Con B D Request repair for external device cable Color error A7 Copyright 2016 LG Electronics Inc All rights reserv...

Page 33: ...ct 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 N Y Replace Main T con B D Screen normal Check screen condition by input External Input Component HDMI DVI Request repair for external device Component error HDMI DVI Connect other external device and cable Check normal operation of External Inp...

Page 34: ...perly Check Logo LED Replace Power B D Measure the each output voltage 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 Replace Power B D N Y Normal voltage Replace Power B D Y A9 Stand By Red or Turn On Operating Turn Off Close 6 14 B Power error No power Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purpos...

Page 35: ... status except listed case Abnormal POWEROFF_ABNORMAL1 Power off by abnormal status except CPU trouble POWEROFF_CPUABNORMAL Power off by CPU Abnormal B Power error Off when on off while viewing power auto on off Error N Y Check Power Off Mode Fix A C cord Outlet and check each 3 phase out Check A C cord Check for all 3 phase power out Check outlet Replace Main B D CPU Abnormal If Power Off mode is...

Page 36: ... set CORRECT output Correct Y N Set correct output Check audio B 13V of Power Board Normal voltage Y N Replace Power Board and repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End Disconnection A11 A12 A9 Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 37: ...only for Analog Wrecked audio Discontinuation Noise only for External 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 audio B Voltage 13V Replace Main B D In case of External ...

Page 38: ...t in room Check Replace Baterry of R C Check Repair Cable connection Connector solder Normal operating Check Stan by Voltage On Main B D Normal Voltage Close N N Check Stan by voltage on Power B D Replace Power B D or Replace Main B D Check IR Output signal Normal Signal N Y Repair Replace IR B D N Replace Main B D Y Y A13 A9 A13 A13 10 14 Remote control Local switch checking D Function Error Copy...

Page 39: ...rror Check the INSTART menu Wi Fi Mac value is NG Y Check Repair Wifi cable connection N Check the Wi Fi Wafer pin Change the Wifi assy Normal Voltage Close Y Y N Replace Main B D Wi Fi Mac value is NG N Close A15 A4 A4 A15 Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 40: ...rsion N Y Technical information Check input signal Signal input Y N External Input and Component Recognition error Check and fix external device cable HDMI DVI Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 41: ...cription If there is a Tak Tak noise from the cabinet refer to the KMS fix information and then proceed as shown in the solution manual For models without any fix information provide the description 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...

Page 42: ...Zoom part with exterior damage Module damage Cabinet damage Replace cabinet Replace remote control Remote control damage Stand dent Replace stand F Exterior defect Exterior defect Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 43: ...g stop TUNER input signal strength checking method A3 4 Version checking method A4 5 Tuner Checking Part A5 6 A Video error _Vertical Horizontal bar residual image light spot Connection diagram A6 7 A Video error_ Color error Check Link Cable EPI reconnection condition A7 8 Appendix Exchange Module 1 A 1 2 Exchange Module 2 A 2 2 Copyright 2016 LG Electronics Inc All rights reserved Only for train...

Page 44: ...while viewing POWER OFF MODE checking method A10 12 C Audio error_ No audio Normal video Checking method in menu when there is no audio A11 13 Voltage and speaker checking method when there is no audio A12 14 D Function error Remote control operation checking method A13 15 Wi Fi operation checking method A14 Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purpos...

Page 45: ... 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 locations Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 46: ...mal audio Entry method 1 Press the ADJ button on the remote control for adjustment 2 Enter into White Balance of item 13 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 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 47: ...ning Manual Tuning Select Channel A3 TUNER input signal strength checking method A Video error_Video error video lag stop Signal Strength is too strong Use attenuator 10dB 15dB 20dB etc Signal Strength is too weak Use Signal Booster Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 48: ...d date Revised date Version ALL MODELS A4 A4 Version checking method A Video error_Video error video lag stop Press the IN START with the remote control for adjustment Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 49: ... each voltage from power supply finally replace the MAIN BOARD A5 TUNER checking part A Video error_Video error video lag stop Checking method 1 Check the signal strength or check whether the screen is normal when the external device is connected 2 After measuring each voltage from power supply finally replace the MAIN BOARD Copyright 2016 LG Electronics Inc All rights reserved Only for training a...

Page 50: ...d date A6 A6 connection diagram 1 A Video error _Vertical Horizontal bar residual image light spot As the part connecting to the external input check the screen condition by signal Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 51: ...te Revised date A7 A7 Check Link Cable EPI reconnection condition A Video error_Color error Check the contact condition of the Link Cable especially dust or mis insertion Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 52: ...l display Line Dim Crosstalk Crosstalk Press damage Brightness difference Burnt Un repairable Cases In this case please exchange the module Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 53: ... Noise on power on off time Line Defect Mura Brightness difference Un repairable Cases In this case please exchange the module Appendix Exchange the Module 2 Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 54: ...Content Established date Revised date A8 ST BY condition On or Off Power ON condition Turn Off A8 Check front Power Indicator B Power error _No power Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 55: ...ch the DC 13V 1 Power ON OFF 2 PDIM 2 3 GND 4 D13 2V 5 D13 2V 6 D13 2V 7 A13 2V 8 A13 2V 9 GND 10 GND 11 MS 12 PDIM 1 A9 Check the Power output voltage and St by voltage B Power error _No power Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 56: ...ntry method 1 Press the IN START button of the remote control for adjustment 2 Check the entry into adjustment item 3 POWER OFF MODE checking method B Power error _Off when on off whiling viewing Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 57: ...Press the Setting button on the remote control 2 Select the Sound function of the Menu 3 Select the Sound Out 4 Select TV Speaker Checking method in menu when there is no audio C Audio error_No audio Normal video Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 58: ...ontact the output terminal of the speaker with GND if there is sound ouput noise we conclude the speaker works well 1 Power ON OFF 2 PDIM 2 3 GND 4 D13 2V 5 D13 2V 6 D13 2V 7 A13 2V 8 A13 2V 9 GND 10 GND 11 MS 12 PDIM 1 A12 Checking Voltage and speaker C Audio error_No audio Normal video Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use O...

Page 59: ... 8 GND 9 12 EYE_SDA 13 EYE_SCL 14 GND 15 IR 16 LED_R 17 GND 18 3 4V_ST 19 KEY2 20 KEY1 21 GND A13 A13 Checking order 1 Check IR cable condition between IR Main board 2 Check the st by 3 5V on the pin 18 Remote control operation checking method D Function error Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 60: ...tion 3 Check the voltage 3 4V_WIFI on P4101 P4001 1 3 4V_WIFI 2 WIFI_DM 3 WIFI_DP 4 GND 5 WOL WIFI_POWER_ON 6 GND 7 NC 8 GND 9 12 EYE_SDA 13 EYE_SCL 14 GND 15 IR 16 LED_R 17 GND 18 3 4V_ST 19 KEY2 20 KEY1 21 GND A14 Wi Fi operation checking method D Function error Copyright 2016 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

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