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Essential servicing instructions for qualified personnel and general safety precautions.
Guidelines for safely handling and repairing LCD panels, including ESD protection.
Safety warnings regarding the replacement and handling of lithium batteries.
Procedures for post-repair safety checks and electrical leakage testing.
Guidance on proper grounding techniques and the use of lead-free solder.
Procedures for safely inserting/extracting FFCs and assembling/disassembling tuner modules.
Explains LED blinking patterns to identify error causes and their corresponding codes.
Step-by-step guide for diagnosing and resolving "No Power" issues related to the PSU.
Details LED blinking counts and their associated error conditions and solutions.
A systematic approach to diagnose and fix sound-related issues in the TV.
Comprehensive steps to troubleshoot and resolve situations where there is no picture output.
Procedures for identifying and resolving issues with the TV's physical side buttons.
Steps to troubleshoot issues with wired Ethernet network connectivity.
A guide for diagnosing and fixing problems with Bluetooth connectivity and devices.
Step-by-step instructions for accessing the TV's service mode using the remote control.
Guide to accessing and checking the TV's software and firmware versions.
Instructions for setting or editing the TV's serial number in the service menu.
Steps for selecting and setting the correct model number within the service menu.
Procedure for adjusting white balance settings to optimize picture color accuracy.
Instructions for transferring WB, Mura, and CUC data between components.
Procedures for checking HDD performance and re-registering the drive.
Method to directly access the self-diagnosis display without entering the full service mode.
Visual guides showing the placement of main circuit boards within the TV.
An overview of the TV's main components and their interconnections.
Detailed layout of all connectors on the QEL model for reference.
Essential servicing instructions for qualified personnel and general safety precautions.
Guidelines for safely handling and repairing LCD panels, including ESD protection.
Safety warnings regarding the replacement and handling of lithium batteries.
Procedures for post-repair safety checks and electrical leakage testing.
Guidance on proper grounding techniques and the use of lead-free solder.
Procedures for safely inserting/extracting FFCs and assembling/disassembling tuner modules.
Explains LED blinking patterns to identify error causes and their corresponding codes.
Step-by-step guide for diagnosing and resolving "No Power" issues related to the PSU.
Details LED blinking counts and their associated error conditions and solutions.
A systematic approach to diagnose and fix sound-related issues in the TV.
Comprehensive steps to troubleshoot and resolve situations where there is no picture output.
Procedures for identifying and resolving issues with the TV's physical side buttons.
Steps to troubleshoot issues with wired Ethernet network connectivity.
A guide for diagnosing and fixing problems with Bluetooth connectivity and devices.
Step-by-step instructions for accessing the TV's service mode using the remote control.
Guide to accessing and checking the TV's software and firmware versions.
Instructions for setting or editing the TV's serial number in the service menu.
Steps for selecting and setting the correct model number within the service menu.
Procedure for adjusting white balance settings to optimize picture color accuracy.
Instructions for transferring WB, Mura, and CUC data between components.
Procedures for checking HDD performance and re-registering the drive.
Method to directly access the self-diagnosis display without entering the full service mode.
Visual guides showing the placement of main circuit boards within the TV.
An overview of the TV's main components and their interconnections.
Detailed layout of all connectors on the QEL model for reference.
General