操作步骤详解：
1.必须先关机并断开电源，确保人身安全；
You must shut down and disconnect the power first to ensure personal safety.
2.将打印机左侧四颗螺丝拧开，并打开侧盖板;
Unscrew the four screws on the left side of the printer and open the side cover.
3.如图所示，右下角跳线位置喷适量酒精;
As shown in the figure, spray proper amount of alcohol at the jumper position at the lower right corner.
4.溶解固定胶质，轻轻拔下插头;
Dissolve and fix the gel and gently pull out the plug.
5.打开盖子，取出托盘和料槽;
Open the lid, take out the printing platform and the resin Vat.
6.限位开关位置如图所示，使用配套工具拧开螺丝;
The position of the limit switch is shown in the figure, use the matching tool to loosen the screw.
7.轻轻抽出限位开关线缆;
Gently pull out the limit switch cable.
8.安装新限位开关;
Install new limit switch.
9.将限位开关线缆插入孔洞;
Insert the limit switch cable into the hole.
10.拧紧两颗螺丝，固定限位开关;
Tighten the two screws to secure the limit switch.
11.插好主板跳线插头，整理线缆;
Plug in the jumper plug of the mainboard and arrange the cables.
12.盖上侧板，拧紧固定螺丝;
Cover the side panel and tighten the fixing screws.
13.完成限位开关安装;
Complete limit switch installation.
