Brother MFC-9840CDW User Manual page 145

Examples of poor print
quality
Toner scatter or toner stain on
the edge of duplex pages
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
Recommendation
CAUTION
We recommend that you place the drum unit and toner cartridges on a
clean, flat surface with a piece of disposable paper underneath them in
case you accidentally spill or scatter toner.
DO NOT touch the surface of the photosensitive drum.
Take all the toner cartridges out of the drum unit and turn the drum
unit over. Wipe the toner on the edge of drum unit with a dry lint free
soft cloth as shown in the illustration.
Troubleshooting and routine maintenance
C
129