Improving the print quality; Toner Save; 12 - 18- Page 179

Brother MFC-8440 User's Guide

2014 Dodge Charger SRT Owner Manual

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USER'S GUIDE MFC-8440/MFC-8640D/MFC-8840D/MFC-8840DN
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TROUBLESHOOTING AND ROUTINE MAINTENANCE   

12 - 18

Improving the print quality

This section provides information on the following topics:

Examples of poor print 
quality

Recommendation

Faint

Check the printer’s environment. Conditions such as humidity, high 
temperatures, and so on may cause this print fault. (See 

Choosing a 

location

 on page ix.)

If the whole page is too light, 

Toner Save

 mode may be on. Turn off 

Toner Save

 mode in the printer Properties tab of the driver.

—

OR

—

If your MFC is not connected to a computer, turn off Toner Save mode 
in the MFC itself. (See 

Toner Save

 on page 4-9.)

Try installing a new toner cartridge. (See 

Replacing the toner cartridge

 

on page 12-28.)
Try installing a new drum unit. (See 

Replacing the drum unit

 on page 

12-34.)

Gray background

Make sure that you use paper that meets the recommended 
specifications. (See 

About paper

 on page 2-1.)

Check the printer’s environment - high temperatures and high humidity 
can increase the amount of background shading. (See 

Choosing a 

location

 on page ix.)

Use a new toner cartridge. (See 

Replacing the toner cartridge

 on page 

12-28.)
Use a new drum unit. (See 

Replacing the drum unit

 on page 12-34.)

Ghost

Make sure you use paper that meets our specifications. Rough-surfaced 
paper or thick print media may cause this problem.
Make sure that you choose the appropriate media type in the printer 
driver. (See 

About paper

 on page 2-1.)

Try using a new drum unit. (See 

Replacing the drum unit

 on page 

12-34.)

Toner specks

Make sure that you use paper that meets our specifications. 
Rough-surfaced paper may cause the problem. (See 

About paper

 on 

page 2-1.)
The drum unit may be damaged. Put in a new drum unit. (See 

Replacing 

the drum unit

 on page 12-34.)

Hollow print

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

About 

paper

 on page 2-1.)

Choose 

Thick paper

 mode in the printer driver, or use thinner paper 

than you are currently using.
Check the printer’s environment because conditions such as high 
humidity can cause hollow print. (See 

Choosing a location

 on page ix.)

All black

You may clear the problem by cleaning the primary corona wire inside 
the drum unit by sliding the blue tab. Make sure you return the blue tab 
to the home position (

â–²

). (See 

Cleaning the drum unit

 on page 12-27.)

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

Replacing 

the drum unit

 on page 12-34.)

ABCDEFGH
abcdefghijk

A B C D
a b c d e
0 1 2 3 4

CDEF

defg

B C

b c d

2 3

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

Detailed Information for Brother MFC-8440 User's Guide

Lists of information found in Brother MFC-8440 User's Guide - Page 179

  • 9.) Try installing a new toner cartridge.
  • 28.) Try installing a new drum unit.
  • 34.) Gray background Make sure that you use paper that meets the recommended specifications.
  • 1.) Check the printer’s environment - high temperatures and high humidity can increase the amount of background shading.
  • 28.) Use a new drum unit.
  • 34.) Ghost Make sure you use paper that meets our specifications.
  • 1.) Try using a new drum unit.
  • 34.) Toner specks Make sure that you use paper that meets our specifications.
  • 1.) The drum unit may be damaged.
  • 34.) Hollow print Make sure that you use paper that meets our specifications.
  • 1.) Choose Thick paper mode in the printer driver, or use thinner paper than you are currently using.
  • 27.) The drum unit may be damaged.

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