Brother DCP-8060 User Manual page 51

Examples of poor print
quality
Hollow print
All black
White Spots on black text
and graphics at 94mm (3.7
in.) intervals
Black Spots at 94 mm (3.7 in.)
intervals
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Black toner marks across the
page
46
Recommendation
Make sure that you use paper that meets our specifications. (See Acceptable
paper and other media on page 9.)
Choose Thick paper mode in the printer driver or in the machine's Paper
Type menu setting, or use thinner paper than you are currently using. (See
Paper Type on page 15 and Basic tab in the Software User's Guide on the
CD-ROM.)
Check the machine's environment. Conditions such as high humidity can
cause hollow print. (See Choosing a location on page 33.)
Clean the primary corona wire on the drum unit. (See Cleaning the corona
wire on page 60.) If the print quality has not improved, put in a new drum unit.
(See Replacing the drum unit (DR-3150) on page 65.)
Clean the primary corona wire on the drum unit. (See Cleaning the corona
wire on page 60.)
The drum unit may be damaged. Put in a new drum unit. (See Replacing the
drum unit (DR-3150) on page 65.)
Dust, paper powder, glue, or other substances may stick to the surface of the
photosensitive drum (OPC) and cause black or white spots to appear on printed
documents.
Make a few copies of a blank, white sheet of paper. (See Making multiple copies
on page 23.)
If you still see the spots on printed documents after making multiple copies, clean
the drum unit (see Cleaning the drum unit on page 61).
If the print quality still has not improved you need to install a new drum. (See
Replacing the drum unit (DR-3150) on page 65.)
Make sure that you use paper that meets our specifications. (See Acceptable
paper and other media on page 9.)
If you use label sheets for laser printers, the glue from the sheets may
sometimes stick to the OPC drum surface. Clean the drum unit. (See Cleaning
the drum unit on page 61.)
Do not use paper that has clips or staples because they will scratch the
surface of the drum.
If the unpacked drum unit is in direct sunlight or room light, the unit may be
damaged.
The drum unit may be damaged. Put in a new drum unit. (See Replacing the
drum unit (DR-3150) on page 65.)