12 - 15 TROUBLESHOOTING AND ROUTINE MAINTENANCE

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, h igh
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 b e on. Turn off
Toner Save mode in the printer Properties tab of the driver.
—OR—
If your MFC is not connected to a computer, tur n off Toner Save mode
in the MFC itself. (See Toner Save on page 4-11.)
Try installing a new toner cartridge. (See Replacing the toner cartridge
on page 12-25.)
Try installing a new drum unit. (See Replacing the drum unit o n page
12-30.)
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
12-25.)
Use a new drum unit. (See Replacing the drum unit on page 12-30.)
Ghost
Make sure you use paper that meets our sp ecifications. Rough-surfaced
paper or thick print media may cause this problem.
Make sure that you choose the appropriate media type in the print er
driver. (See About paper on page 2-1.)
Try using a new drum unit. (See Replacing the drum unit on page
12-30.)
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 12-30.)
Hollow print
Make sure that you use paper that meets our spec ifications. (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 h igh
humidity can cause hollow print. (See Choosing a location on pag e ix.)
All black
You may clear the problem by cleaning the primary corona wire i nside
the drum unit by sliding the blue tab. Ma ke sure you return the blue tab
to the home position (▲). (See Cleaning the drum unit on page 12-24.)
The drum unit may be damaged. Put in a new drum unit. (See Replacing
the drum unit on page 12-30.)
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BC
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2
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