Samsung CLX-9250ND-XAA - Manual (Page 111)

Maintenance_ 111
Cleaning the LSU window (CXL-9252 9352 Series only)
1. Open the front door.
2. Squeeze the left/right locking levers and push outward. Remove the
waste toner container.
3. Take out the LSU window cleaning stick.
4. Locate the LSU window cleaning hole and insert the LSU window
cleaning stick.
Slowly push and pull the LSU window cleaning stick 4 or 5 times to
clean the LSU window.
5. Repeat step 4 for all 4 LSU window holes.