White lines across the page; Lines across the page; Black lines down the page- Page 126

112

White lines across the page

„

Make sure that you use paper that meets our specifications. A rough surfaced 
paper or thick print media can cause the problem. (See 

Acceptable paper 

and other media

 on page 12.)

„

Make sure that you choose the proper media type in the printer driver or in the 
machine

’

s Paper Type menu setting. (See 

Acceptable paper and other 

media

 on page 12 and 

Basic tab in the Software User

’

s Guide on the 

CD

-

ROM

.)

„

The problem may disappear by itself. Print multiple pages to clear this 
problem, especially if the machine has not been used for a long time.

„

Clean the scanner window with a soft cloth. (See 

Cleaning the laser 

scanner window

 on page 128.)

„

The drum unit may be damaged. Put in a new drum unit. (See 

Replacing the 

drum unit (DR-520)

 on page 135.)

Lines across the page

„

Clean the primary corona wire in the drum unit. (See 

Cleaning the corona 

wire

 on page 130.)

„

Clean the scanner window with a soft cloth. (See 

Cleaning the laser 

scanner window

 on page 128.)

„

The drum unit may be damaged. Put in a new drum unit. (See 

Replacing the 

drum unit (DR-520)

 on page 135.)

Black lines down the page

Printed pages have toner 

stains or stripes down the page.

„

Clean the primary corona wire of the drum unit. (See 

Cleaning the corona 

wire

 on page 130.)

„

Make sure the primary corona wire

’

s blue tab is at the home position (

a

).

„

The drum unit may be damaged. Put in a new drum unit. (See 

Replacing the 

drum unit (DR-520)

 on page 135.)

„

The toner cartridge may be damaged. Put in a new toner cartridge. (See 

Replacing the toner cartridge (TN-550/TN-580)

 on page 132.) 

„

The fuser unit may be smudged. Call Brother Customer Service at 
1

-

877

-

BROTHER (1-877-276-8437) (

in USA

) or 

1

-

877

-

BROTHER (

in Canada

).

White lines down the page

„

Clean the laser scanner window with a soft cloth. (See 

Cleaning the laser 

scanner window

 on page 128.)

„

The toner cartridge may be damaged. Put in a new toner cartridge. 
(See 

Replacing the toner cartridge (TN-550/TN-580)

 on page 132.)

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.

„

If you are using the MP tray, see 

Loading envelopes and other media

 on 

page 16.

„

The paper tray may be too full.

„

Check the paper type and quality. (See 

Acceptable paper and other 

media

 on page 12.)

Examples of poor print 
quality

Recommendation

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A B C D
a b c d e
0 1 2 3 4

ABCDEFGH
abcdefghijk

A B C D
a b c d e
0 1 2 3 4

ABCDEFGH
abcdefghijk

A B C D
a b c d e
0 1 2 3 4

ABCDEFGH
abcdefghijk

A B C D
a b c d e
0 1 2 3 4

ABCDEFGH
abcdefghijk

A B C D
a b c d e
0 1 2 3 4