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.扣开黑色卡扣，向上拉出黄色排线；
Open the black buckle and pull out the Yellow cable upward;
4.用托盘接住废液，取出打印平台；
Use a tray to catch the waste liquid and take out the printing platform;
5.拧开螺丝，取出料槽；
Screw out the screw and take out the material trough;
6.依次拧开打印屏固定螺丝；
Open the fixing screws of the printing screen in turn;
7.轻轻松动打印屏；
Gently loosen the print screen；
8.从右边抬起打印屏，防止左边排线损坏；
Lift up the printing screen from the right side to prevent damage to the left cable;
9.拉出左侧排线，取出打印屏套件；
Pull out the left cable and take out the print screen kit;
10.安装新打印屏套件；
Install the new print screen kit;
11.扣开卡扣，插入黄色排线，扣上卡扣；
Open the clasp, insert the Yellow cable, and buckle it;
12.插入左侧排线，盖上打印屏套件；
Insert the left cable and cover the print screen kit;
13.拧紧打印屏套件固定螺丝；
Tighten the fixing screws of the print screen kit;
14.将黄色排线平行插入卡槽；
Insert the Yellow cable into the slot in parallel;
15.完全插入后，再按下黑色卡扣；
After fully inserting, press the black clasp again;
16.接通电源，打印机开机；
Turn on the power and the printer will start up;
17.依次点击“工具–校正–下一步”；
Click “tools – correction – next step” in turn;
18.当触摸屏和打印屏都显示矩形框，说明测试成功；
When the touch screen and print screen display rectangular box, the test is successful;
19.测试后应及时关闭打印机，保护屏幕；
After the test, the printer should be turned off in time to protect the screen;
20.安装侧盖板，打印屏套件更换完成。
Install the side cover and replace the print screen kit.
