Cleaning LSU
To obtain high quality from your printer, clean the LSU(Laser Scanning Unit) when characters have lines running through them.
1Open the top cover and remove the toner cartridge.
2Pull up on the LSU cleaner and put it on the LSU.
3Slide the LSU cleaner
horizontally across a track on the top of the LSU.
Notes: For more information on using method, see
attached label on the inside of the top cover.
6.6 MAINTAINING YOUR PRINTER