This document is the LT1957 LCD TV repair manual, which mainly introduces the product's safety precautions, specifications, operating instructions, connection introduction, fault handling process, disassembly process diagram, white balance adjustment, BOM, PCB Layout, circuit diagram, TV electrical box diagram, TV explosion diagram and other content.
This service manual provides detailed safety guidelines, storage recommendations, and high‑voltage warnings for the LT1957 LCD TV. It also lists the basic specifications and describes the internal components such as the main board, power board, remote receiver board, and key board.
The document includes step‑by‑step operation instructions, menu functions, external connection methods, fault‑handling procedures, disassembly flowcharts, white‑balance adjustment, a bill of materials, PCB layouts, circuit diagrams, and both electrical block and exploded views of the television. This manual is written in Chinese.
| Components | Main board, power board, remote receiver board, key board |
|---|---|
| Control interfaces | I2C logic bus, DDC, LCD panel brightness control, DC‑DC converter |
Unplug the power cord before moving the display.
High voltage generated by the power boost board can cause severe electric shock if contacted.