Black toner marks across the ; Line across the page; Black lines down the page- Page 118

104

Black toner marks across the 

page

„

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

Acceptable paper and other print media

 on page 14.)

„

If you use label sheets for laser machines, the glue from the sheets 
may sometimes stick to the OPC drum surface. Clean the drum unit. 
(See 

Cleaning the drum unit

 on page 123.)

„

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

Replacing a toner cartridge

 on page 126.)

„

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

Replacing the drum unit

 on page 130.)

Line across the page

„

Clean the laser scanner window and the corona wire inside the drum 
unit. (See 

Cleaning the laser scanner window

 on page 120 and 

Cleaning the corona wire

 on page 122.)

„

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

Replacing the drum unit

 on page 130.)

Black lines down the page

Printed pages have toner 

stains down the page

„

Clean the 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 122.)

„

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

Replacing a toner cartridge

 on page 126.)

„

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

Replacing the drum unit

 on page 130.)

„

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).

Examples of poor print 
quality

Recommendation

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