

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 
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 
Try installing a new toner cartridge. (See
on page 12-28.)
Try installing a new drum unit. (See 
Gray background
Make sure that you use paper that meets the recommended 
specifications. (See 
Check the printer’s environment - high temperatures and high humidity 
can increase the amount of background shading. (See 
Use a new toner cartridge. (See
12-28.)
Use a new drum unit. (See 
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 
Try using a new drum unit. (See
Toner specks
Make sure that you use paper that meets our specifications. 
Rough-surfaced paper may cause the problem. (See 
page 2-1.)
The drum unit may be damaged. Put in a new drum unit. (See 
Hollow print
Make sure that you use paper that meets our specifications. (See
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 
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
The drum unit may be damaged. Put in a new drum unit. (See
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