Brother MFC-9450CDN, DCP-9042CDN, DCP-9045CDN b, c, d

Colored spots at 2.95 in. (75 mm)

aDust, paper powder, glue, and so on may stick to the surface of the

photosensitive drum (OPC) and cause black or white spots to

appear on printed documents.

bMake a few copies of a blank, white sheet of paper. (See Making

multiple copieson page 30.)

cIf you still see the spots on printed documents after making multiple

copies, clean the drum unit (See Cleaning the drum uniton

page108.)

dIf the print quality still has not improved you need to install a new

drum. (See Replacing the drum uniton page 122.)

Toner scatter or toner stain

Check the machine’s environment. Conditions such as high humidity

and high temperatures may cause this print quality problem. (See

Choosing a locationon page 50.)

Make sure that you use paper that meets our specifications. Rough-

surfaced paper may cause the problem. (See Acceptable paper and

other mediaon page 10.)

Install a new toner cartridge for the color causing the problem. (See

Replacing a toner cartridgeon page 117.)

Clean the corona wires and the drum unit for the color causing the

problem. (See Cleaning the corona wireson page 104 and Cleaning

the drum uniton page 108.) If the print quality has not improved, put

in a new drum unit. (See Replacing the drum uniton page 122.)

Gray or colored background

Make sure that you use paper that meets our specifications. (See

Acceptable paper and other mediaon page 10.)

Check the machine’s environment. Conditions such as high

temperatures and high humidity can increase the amount of

background shading. (See Choosing a locationon page 50.)

Install a new toner cartridge for the color causing the problem. (See

Replacing a toner cartridgeon page 117.)

Clean the corona wires of the drum unit for the color causing the

problem. (See Cleaning the corona wireson page 104.) If the print

quality has not improved, put in a new drum unit. (See Replacing the

drum uniton page 122.)

Page skewed

Make sure the paper or other print media is loaded properly in the

paper tray and that the guides are not too tight or too loose against

the paper stack.

Set the paper guides correctly.

The paper tray may be too full.

Make sure that you use paper that meets our specifications. (See

Acceptable paper and other mediaon page 10.)

Examples of poor print

quality

Recommendation

ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.

75 mm / 2.95 in.

ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.