Troubleshooting

Improving the print quality

If you have a print quality problem, print a test page first (see Print a test page uu page 82). If the printout looks good, the problem is probably not the machine. Check the interface cable or try the machine on another computer. If the printout has a quality problem, check the following steps first. And then, if you still have a print quality problem, check the chart below and follow the recommendations.

Note

Using non-Brother supplies may affect the print quality, hardware performance, and machine reliability.

a To get the best print quality, we suggest using the recommended paper. Check that you are using paper that meets our specifications. (See Acceptable paper and other print media uu page 2.)

b Check that the drum unit and toner cartridge are installed properly.

 

 

 

 

 

 

 

6

Examples of poor print quality

Recommendation

 

 

 

 

 

 

 

 

Take out the drum unit and toner cartridge assembly. Hold the assembly level

 

 

 

 

 

 

 

with both hands and gently shake it from side to side several times to spread

 

 

 

ABCDEFGH

the toner evenly inside the cartridge.

 

 

 

abcdefghijk

If the LEDs indicate Replace Toner, put in a new toner cartridge.

 

 

 

A B C D

 

 

 

uu Replacing the toner cartridge uu page 96

 

 

 

a b c d e

 

 

0 1 2 3 4

 

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

 

 

 

Faint

temperatures, and so on, may cause this print fault.

 

 

 

uu Product Safety Guide: Choosing a location

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If the whole page is too light, Toner Save may be turned on. Turn off

 

 

 

 

 

 

 

Toner Save Mode in the Advanced tab (For Windows®) or the Advanced

 

 

 

 

 

 

 

print settings of Print Settings (For Macintosh) of the driver.

 

 

 

 

 

 

 

Clean the corona wire of the drum unit.

 

 

 

 

 

 

 

uu Cleaning the corona wire uu page 111

 

 

 

 

 

 

 

Put in a new toner cartridge.

 

 

 

 

 

 

 

uu Replacing the toner cartridge uu page 96

 

 

 

 

 

 

 

Put in a new drum unit.

 

 

 

 

 

 

 

uu Replacing the drum unit uu page 104

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Make sure that you use paper that meets our specifications.

 

 

 

 

 

 

 

uu Acceptable paper and other print media uu page 2

 

 

 

ABCDEFGH

 

 

 

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

 

 

 

abcdefghijk

 

 

 

A B C D

and high humidity can increase the amount of background shading.

 

 

 

a b c d e

uu Product Safety Guide: Choosing a location

 

 

0 1 2 3 4

 

Put in a new toner cartridge.

 

 

Gray background

uu Replacing the toner cartridge uu page 96

 

 

 

 

 

 

 

Put in a new drum unit.

 

 

 

 

 

 

 

uu Replacing the drum unit uu page 104

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

141