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General| Screen Size | 55 inches |
|---|---|
| Display Technology | LED |
| Resolution | 3840 x 2160 (4K UHD) |
| Refresh Rate | 60 Hz |
| Smart TV | Yes (webOS 3.0) |
| HDMI Ports | 3 |
| USB Ports | 2 |
| Wi-Fi | Yes |
| Processor | Quad-Core |
| Bluetooth | No |
| Audio Output | 20W |
| Weight | 37.5 lbs |
Essential safety parts must be replaced with specified components to prevent hazards.
Precautions for using isolation transformers and handling components safely.
Procedures for performing AC leakage current checks (Cold and Hot).
General guidelines for safe and correct servicing procedures.
Techniques to prevent damage to ES devices from static electricity.
Guidelines for proper soldering techniques, temperature, and materials.
Procedures for removing and replacing components like ICs, transistors, diodes, and fuses.
Techniques for repairing damaged copper patterns on circuit boards.
Defines scope, environmental, and power conditions for testing.
Outlines the methods used for performance and specification testing.
Details overall technical specifications of the TV model.
Lists specifications for different display modules used in the TV.
Specifies resolutions and frequencies for component input.
Lists resolutions, frequencies, and clock rates for HDMI PC/DTV input.
Lists resolutions, frequencies, and clock rates for HDMI DTV input.
Specifies 3D modes and resolutions for HDMI 1.4b input.
Details 3D input modes and resolutions for HDMI 1.4/2.0.
Lists 3D input modes and resolutions for HDMI PC input.
Lists resolutions and frequencies for 3D RF input.
Details manual and automatic 3D input modes via USB/DLNA.
Lists resolutions and frequencies for 3D component input.
Details manual 3D input modes for Miracast and Widi.
Specifies scope and general technical details relevant to adjustments.
Lists main PCB and final assembly adjustment points.
Details the process for Automatic Digital Conversion (ADC) adjustment.
Procedures for downloading MAC, ESN, Widevine, and HDCP2.0 keys.
Steps for inspecting LAN port connection and network settings.
Procedure for performing a PING test on the LAN port.
Instructions for downloading model name and serial number.
Method to check Wi-Fi MAC address using RS232 commands.
Procedures for downloading Extended Display Identification Data (EDID).
Defines the command format for adjustment procedures.
Details the objective and process for V-COM voltage adjustment.
Describes the manual method for white balance adjustment.
Outlines the procedure for automatic white balance calibration.
Provides tables for LED module color coordinate compensation for aging.
Procedures for testing remote controls and ship-out mode.
Tests for 3D functionality and HDMI ARC inspection.
Procedure to inspect the Eye-Q sensor functionality.
Details the procedure for performing GND and internal pressure checks.
Instructions for downloading software via USB for service.
Illustrates the overall circuit connections of the K2Lp chipset.
Shows the Inter-Integrated Circuit (I2C) communication pathways.
Reiterates safety precautions for handling parts.
Troubleshooting steps for no video or normal audio issues.
Troubleshooting steps for no video and no audio issues.
Troubleshooting steps for picture breaking or freezing.
Troubleshooting steps for color-related errors.
Troubleshooting for visual artifacts like bars or spots.
Troubleshooting for external device video and color errors.
Troubleshooting steps when the TV does not power on.
Troubleshooting for unexpected power shutdowns or auto-off issues.
Troubleshooting steps when there is no audio but video is present.
Troubleshooting for distorted, intermittent, or noisy audio.
Troubleshooting for remote control and local switch issues.
Procedure to check the operation of the MR15 remote.
Troubleshooting steps for Wi-Fi connectivity issues.
Troubleshooting for camera module errors.
Troubleshooting for errors when external devices are not recognized.
Steps to diagnose and resolve circuit and mechanical noise issues.
Steps to diagnose and address physical defects on the TV exterior.
Detailed steps for diagnosing and resolving various video errors.
Steps for diagnosing and resolving power-related issues.
Procedures for diagnosing and resolving audio issues.
Steps for diagnosing and resolving various function-related errors.
Diagnosing and resolving noise and physical exterior defects.
Visual guide to common main board defects requiring replacement.
More visual examples of main board defects and their symptoms.
Visual guide to common power supply board defects.
Visual examples of panel defects requiring module exchange.
More visual examples of panel defects requiring module exchange.
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