White lines across the page; Lines across the page; White lines down the page- Page 100

Troubleshooting

92

6

Hollow print

„

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

About 

paper

on page 5.

„

Choose 

Thick paper

 mode in the printer driver, or use thinner paper than what 

you are now using.

„

Check the printer’s environment. Conditions such as high humidity can cause 
hollow print. See 

Positioning the printer

on page 4.

„

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

Replacing the drum 

unit

on page 69.

All black

„

Clean the primary corona wire inside the drum unit by sliding the green tab. Be 
sure to return the green tab to the home position (

a

). See 

Cleaning the corona 

wire

on page 77.

„

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

Replacing the drum 

unit

on page 69.

„

The fuser unit may be contaminated. Call Brother Customer Service.

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 problems.

„

Make sure that you choose the correct media type in the printer driver.

„

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

„

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

Replacing the drum 

unit

on page 69.

Lines across the page

„

Clean the inside of the printer and the primary corona wire in the drum unit. See 

Cleaning

on page 73.

„

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

Replacing the drum 

unit

on page 69.

White lines down the page

„

Make sure that a torn piece of paper is not inside the printer covering the scanner 
window.

„

Wipe the scanner window with a soft cloth. See 

Cleaning the inside of the 

printer

on page 74.

„

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

Replacing the toner cartridge

on page 62.

„

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

Replacing the drum 

unit

on page 69.

Examples of poor print 
quality

Recommendation

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