If black streaks appear with printing, the fuser roller in the main unit may be dirty.
Should this occur, clean the fusing roller in the following procedure. The roller should also be cleaned each time the toner cartridge is replaced. Load a sheet of blank LTR paper into the multi-purpose tray and start cleaning.
note:
Cleaning the roller takes approximately 100 seconds.
1. Press [Additional Functions].
2. Press [<-] or [+>] to select <ADJUST./CLEANING>, then press [OK].
3. Open the multi-purpose tray.
4. Pull out the multi-purpose tray extension until it clicks, then open it. 
5. Load a sheet of blank LTR paper.
6. Press [<-] or [+>] to select <FIX. UNIT CLEANING>, then press [OK].
Cleaning starts. When finished, the display returns to the standby mode.
note:
- Use standard paper as the cleaning paper.
- Throw away the cleaning paper after use.
