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General| Screen Size | 55 inches |
|---|---|
| Display Type | LCD |
| Smart TV | Yes |
| HDMI Ports | 4 |
| USB Ports | 3 |
| Wi-Fi | Yes |
| Ethernet | Yes |
| Audio Output | 20W |
| Backlight Technology | LED |
| 3D Technology | Yes |
| Refresh Rate | 100Hz |
| Operating System | LG Smart TV |
| Resolution | 1920 x 1080 |
| Weight | 19.5 kg |
Important safety notice before servicing the chassis.
Guidance on using isolation transformers and replacing components safely.
General safety rules for servicing, including unplugging and component handling.
Techniques for repairing damaged copper patterns on circuit boards.
Lists market specifications and supported countries for DTV/Analog.
Specifies parameters for analog and digital receiving systems, including modulation types.
Lists HDMI inputs and their support for PC and HDCP.
Details ADC adjustment for black level, gain, and RGB compensation.
Procedure for downloading MAC, CI+, Widevine, and ESN.
Steps for connecting SET to PC for PING test.
Checking the downloaded CI+ key value in Instart menu or via RS232.
Explains EDID/DDC for PC/MNT optimal resolution via information sharing.
Steps for automatic White Balance adjustment using a color analyzer.
Steps for manual White Balance adjustment.
Lighting, probe location, and aging time conditions for adjustment.
Procedure for selecting country group and options.
Auto-check preparation and procedure for GND/Internal Pressure.
Steps to adjust Tool Option after USB software download.
Illustrates screw types and their locations on the chassis.
Table showing MICOM model options and their configurations.
Lists the applicable model for the engineering guide.
Details EPI features like topology, CDR, bandwidth, and signal cascading.
Compares HF mini-LVDS features like signal count and connectors.
Shows the change from mini-LVDS to EPI for LCM connection.
Compares demerits like line count, clock skew, and bandwidth for mini-LVDS and EPI.
Identifies the main printed circuit board.
Identifies EPI cables connecting main and module.
Identifies the main printed circuit board.
Identifies EPI cables connecting main and module.
Diagram showing the circuit connections for IR and soft touch.
Details the LED lighting scenarios for different modes and conditions.
Displays touch key threshold levels at a specific temperature.
Instructions for understanding and checking touch sensitivity.
Procedure for changing touch EEPROM registers via USB port.
Details data sent during pairing, including FW version and BD_ADDR.
Period and data type for motion and voice data transmission.
Block diagram of the WIFI built-in module.
Explains Widevine as a solution for adaptive streaming and DRM.
Discusses HDCP 2.0 and its relation to Netflix services.
Defines Widevine Key as unique data stored on the TV.
Highlights HDCP 2.0's support for broader wired and wireless interfaces.
Defines DTCP as a cryptographic protocol for content protection.
Shows the current settings for platform, model, and function parameters.
Lists error symptoms by mid category.
Lists common defect types for T-Con, Inverter, and Module.
Addresses video errors related to no video or normal audio.
Addresses video errors related to no video or no audio.
Addresses picture problems like freezing or broken images.
Addresses picture problems in DVB-S/S2 tuning.
Addresses video errors, specifically color issues.
Addresses video errors: vertical/horizontal bars, residual image, light spots.
Addresses power errors, specifically no power issues.
Addresses power errors: off when on, off while viewing, auto on/off.
Addresses audio errors: no audio or normal video.
Addresses audio errors: wrecked audio, discontinuation, or noise.
Addresses general function issues, specifically remote control errors.
Troubleshooting steps for remote control operating errors.
Addresses function errors related to external device recognition.
Addresses noise issues, including circuit and mechanical noise.
Addresses exterior defects and related repair actions.
Lists error symptoms by mid category.
Details checking White Balance value for video errors.
Details power board voltage measuring methods.
Details checking tuner input signal strength.
Details LCD-TV version checking method.
Details LCD TV connection diagram for video errors.
Details the tuner checking part for video errors.
Details adjustment test patterns using the ADJ Key.
Details checking the front display LED for power errors.
Details checking power input voltage and ST-BY 5V.
Details checking the "power on" pin status.
Details checking power off mode for specific errors.
Details checking audio settings in the menu.
Details voltage and speaker checking methods for audio errors.
Details remote controller operation checking methods.
Details the sequence of VCOM adjustment.
