Troubleshooting

Improving the print quality

If you have a print quality problem, make a copy first (put a document on the scanner glass and press Start). If the printout looks good, the problem is probably not the machine. Check the interface cable connections or try printing a different document. If the printout or test page printed from the machine 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 use paper that meets our specifications. (See Acceptable paper and other print media

on page 16.)

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

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

B

 

 

 

side several times to spread the toner evenly inside the cartridge.

ABCDEFGH

Check if the Toner Setting for Replace Toner is set to

 

abcdefghijk

 

A B C D

Continue (Continue mode). See Toner settings in Chapter 1 of

 

a b c d e

the Advanced User's Guide.

 

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

 

0 1 2 3 4

 

high temperatures, and so on, may cause this print fault. See the

 

 

 

 

Safety and Legal booklet.

 

Faint

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

 

 

 

 

off Toner Save mode in the machine menu settings or Toner

 

 

 

 

Save mode in the printer Properties of the driver. See Toner save

 

 

 

 

in Chapter 1 of the Advanced User's Guide or Advanced tab in

 

 

 

 

Chapter 2 of the Software User's Guide.

 

Clean the corona wire of the drum unit. See Cleaning the corona wire on page 34.

Put in a new toner cartridge. See Replacing the toner cartridge on page 29.

Put in a new drum unit. See Replacing the drum unit on page 35.

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