LG 65UG8709 User Manual

Printed in KoreaP/NO : MFL68762602 (1501-REV00)
CHASSIS : LD53V
MODEL : 65UG870V 65UG870V-ZA
65UG8709 65UG8709-ZA
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

LG 65UG8709 Specifications

General

Brand	LG
Model	65UG8709
Category	TV
Language	English

Summary

LED TV Service Manual

CAUTION

SAFETY PRECAUTIONS

IMPORTANT SAFETY NOTICE

Electrical and mechanical parts have special safety characteristics.

SERVICING PRECAUTIONS

ADJUSTMENT INSTRUCTION

Automatic Adjustment Procedures

Manual Adjustment and EDID Download

EDID(The Extended Display Identification Data)/DDC(Display Data Channel) download

White Balance Adjustment

Adjustment Procedures and Commands

BLOCK DIAGRAM

EXPLODED VIEW

IMPORTANT SAFETY NOTICE

Main System Schematic

Power Supply Schematics (Part 1)

T-con and URSA Power Supplies

DDR Memory Schematics

DDR3 Memory Details

LM15U Integrated Circuit Pinout

IC100 LGE5331(LM15U) Pinout

CI Interface Schematics

Power Supply Schematics (Part 2)

LM15U Power Schematics

Renesas MICOM and Debugging

Renesas MICOM Schematics

HDMI and MHL Interfaces

HDMI Interface Schematics

USB Interface Schematics

USB Downstream and Hub

Ethernet Interface Schematic

SCART Interface Schematic

Audio Amplifier Schematics

AUDIO AMP (NTP7515)

Woofer Amplifier Schematic

Woofer Amplifier Circuit

SCART Audio Amplifier Schematic

SCART Audio Amplifier Circuit

Headphone Amplifier Schematic

HP_AMP Circuit

B-CAS (Smart Card) Interface

Tuner Circuit Schematics

Tuner Circuit Details

DVB Tuner Symbol and Improvements

DVB-S2 LNB Schematic

LNB Part Allegro Layout

URSA9 Video/OSD Interface

eMMC Interface Schematic

eMMC I/F Details

RS-232C Control Interface

RS232C Control Schematic

URSA9 Video and OSD Interface

URSA9 Configuration and Debugging

URSA Reset and SPI Flash

URSA9 Integrated Circuit Pinout

IC2500 LGE7411(URSA9) Pinout

Main PCB Identification (UF85 CIS)

Main PCB Identification (UF85 Series)

Main PCB Identification (UG87 Series)

Standard Repair Process: Video Errors

No Video/Normal Audio Troubleshooting

Troubleshooting steps for no video or normal audio issues.

No Video/No Audio Troubleshooting

Troubleshooting steps for no video or no audio issues.

Picture Broken/Freezing Troubleshooting

Troubleshooting steps for picture breaking or freezing.

Color Error Troubleshooting

Troubleshooting steps for color errors, including input and test patterns.

Vertical/Horizontal Bar Issues

Troubleshooting for vertical/horizontal bars, residual images, and light spots.

Standard Repair Process: Power Errors

No Power Troubleshooting

Troubleshooting steps when the TV has no power.

Power Off Mode Issues

Troubleshooting for power off modes and voltage checks.

Standard Repair Process: Audio Errors

No Audio/Normal Video Troubleshooting

Troubleshooting steps when there is no audio or normal video.

Audio Distortion/Noise Troubleshooting

Troubleshooting for wrecked audio, discontinuation, or noise.

Standard Repair Process: Function Errors

Remote Control Operating Error

Troubleshooting steps for remote control operation issues.

MR15 (Magic Remote) Operating Error

Troubleshooting steps for the MR15 Magic Remote control.

Wifi Operating Error

Troubleshooting steps for Wifi operating errors, including Mac value and cable checks.

Camera Operating Error

Troubleshooting steps for camera operating errors, checking version and module.

External Device Recognition Error

Troubleshooting for errors recognizing external devices.

Standard Repair Process: Noise Issues

Circuit and Mechanical Noise

Troubleshooting steps for circuit noise and mechanical noise.

Standard Repair Process: Exterior Defects

Exterior Defect Troubleshooting

Steps for addressing exterior defects like module, cabinet, or stand damage.

Standard Repair Process: Video Error Details

Checking LCD Backlight

Procedure to check LCD backlight by naked eye.

Checking White Balance Value

Procedure to check and re-enter white balance values.

Tuner Input Signal Strength Check

Method to check tuner input signal strength.

Version Checking Method

Method to check software version for remote controller adjustment.

Tuner Checking Part

Checking methods for tuner components and external device connection.

Connection Diagram for External Inputs

Link Cable Reconnection Check

Procedure to check Link Cable (VX1) contact and reconnection.

Adjustment Test Patterns (ADJ Key)

Using ADJ Key to view test patterns for color error diagnosis.

Standard Repair Process: Power Error Details

Checking Front Power Indicator

Procedure to check the front power indicator status.

Checking Power Input Voltage and ST-BY 3.5V

Procedure to check power input voltages.

Power Off Mode Checking Method

Method to check the power off modes and adjust settings.

Standard Repair Process: Audio Error Details

Checking Audio Settings in Menu

Procedure to check audio settings in the menu for no audio issues.

Voltage and Speaker Checking Method

Checking method for voltage and speaker when there is no audio.

Standard Repair Process: Function Error Details

Remote Controller Operation Check

Wifi & BT Operations Check