BLT4102 Product Manual
17
A.3 Replace the Lower protective window
1. Loose the screw and open the protective door of the lower protective window drawer;
2. Pull out the lower protective window drawer;
3. Close the protective door of the lower protective window drawer to prevent dust from
entering;
4. Remove the pressure ring on the protective window;
5. Replace the lower protective window;
6. Open the protective door of the lower protective window drawer;
7. Insert the lower protective window drawer with lens into the inside of the cutting head.