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LG OLED55B6P

LG OLED55B6P
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P/NO : MFL69589301 (1604-REV00)
CHASSIS : EA64B
MODEL : OLED55B6P OLED55B6P-U
MODEL : OLED65B6P OLED65B6P-U
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
OLED TV
SERVICE MANUAL
Internal Use Only

Table of Contents

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LG OLED55B6P Specifications

General IconGeneral
Screen Typeoled
Wall Mount300mm x 200mm
Tunerdigital
Screen Size54.6 inches, 55 inches
Resolution4k (2160p)
Refresh Rate60hz
HDRyes
Built-In Speakersyes
Surround Soundother
Speakers Output40 watts
HDMI Ports4
HDMI 2.1 Ports0
USB Ports3
RF Antennayes
Networkbuilt-in wi-fi
Digital Optical Audio Outputs1
Analog Audio Outputs0
Component Video Inputs0
Composite Video Inputs1
DVI0
SmartTVwebos
Streaming Servicesnetflix, youtube
Voice Assistantother
Remote Controluniversal
3Dno
Power Consumption175 kilowatt hours
Depth with Stand8.9 inches
Height with Stand29.9 inches
Width with Stand48.4 inches
Net Weight with Stand41 pounds
Depth without Stand1.9 inches
Height without Stand28.1 inches
Net Weight without Stand33.7 pounds

Summary

SAFETY PRECAUTIONS

IMPORTANT SAFETY NOTICE

Critical safety information for preventing hazards during servicing.

SERVICING PRECAUTIONS

ADJUSTMENT INSTRUCTION

ADC Calibration and SW Version Check

ADC Calibration Procedures

Procedures for calibrating Analog-to-Digital Converter settings.

SET Assembly Adjustment Methods

White Balance Adjustment Procedures

Procedures for calibrating white balance for optimal color reproduction.

DDC Protocol, RS-232 C Commands, and Bluetooth Upgrade

Block Diagrams Overview

EXPLODED VIEW

DISASSEMBLY Procedures

Schematic Diagrams - K2 L Interfaces and Power

K2 L DDR3 Memory and External IO Schematics

Schematics detailing DDR3 memory interface and external input/output connections.

Schematic Diagrams - K2 L Memory and Ground Connections

Schematic Diagrams - K2 L External InputOutput and Interfaces

Schematic Diagrams - K2 L Power Sequence and Voltage Rails

Schematic Diagrams - OLED Power Supply and Detection

Schematic Diagrams - MICOM and Power Sequence Control

Schematic Diagrams - HDMI Retimer, EEPROM, and Control Interfaces

Schematic Diagrams - Wireless and IRKey Interfaces

Schematic Diagrams - USB 2.0 Port Connections

Schematic Diagrams - USB 3.0 Port Connections

Schematic Diagrams - Ethernet Interface

Schematic Diagrams - Main Audio Amplifier

Schematic Diagrams - Tweeter Amplifier

Schematic Diagrams - Earphone Amplifier

Schematic Diagrams - Tuner and Demodulator Circuits

Schematic Diagrams - Tuner Module Connections

Schematic Diagrams - EMMC Interface

Schematic Diagrams - RS-232 C Control Interface

Standard Repair Process - Video Error: No VideoNormal Audio

Vx1 Lock LED and Power Board Output Check

Troubleshooting steps for no video or normal audio issues.

No VideoNo Audio Troubleshooting

Diagnostic steps for no video and no audio faults.

Picture BrokenFreezing Troubleshooting

Steps to diagnose and fix picture breaking or freezing issues.

Color Error Troubleshooting

Diagnostic flow for color-related display errors.

VerticalHorizontal Bar and External Device Issues

Troubleshooting for bars, image retention, and external device connection problems.

Standard Repair Process - Power Error: No Power

No Power Troubleshooting Steps

Diagnostic steps for when the TV does not power on.

Power Intermittent Issues Troubleshooting

Troubleshooting for power issues like auto on/off or off during viewing.

Standard Repair Process - Audio Error: No AudioNormal Video

No Audio Troubleshooting in Menu

Steps to diagnose and fix audio issues when video is normal.

Standard Repair Process - Function Error: Remote Control Issues

Standard Repair Process - Noise Issues

Standard Repair Process - Exterior Defect

Standard Repair Process Detail Manual - Index

Video Error Troubleshooting Details

Specific troubleshooting procedures for various video error types.

Standard Repair Process Detail Manual - Video Error (No VideoNormal Audio)

Appendix: Module Exchange Guide (1)

Appendix: Module Exchange Guide (2)

Standard Repair Process Detail Manual - Power Error (No Power)

Power Input Voltage Check

Procedure to measure input voltages from the power board.

Standard Repair Process Detail Manual - Audio Error (No AudioNormal Video)

Standard Repair Process Detail Manual - Function Error: Remote Control

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