User Manual

46
Improving the print quality B
Examples of poor print
quality
Recommendation
White lines across the page
 Make sure that you use paper that meets our specifications. A rough
surfaced paper or thick print media can cause the problem. (See
Acceptable paper and other print media on page 11.)
 Make sure that you choose the appropriate media type in the printer
driver or in the machine’s Paper Type menu setting. (See Acceptable
paper and other print media on page 11 and Basic tab in the Software
User’s Guide on the CD-ROM.)
 The problem may disappear by itself. Print multiple pages to clear this
problem, especially if the machine has not been used for a long time.
 The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 71.)
White lines down the page
 Wipe the laser scanner windows with a soft cloth. (See Cleaning the
laser scanner window on page 61.)
 Make sure that a torn sheet of paper is not inside the machine
covering the scanner window.
 The toner cartridge may be damaged. Put in a new toner cartridge.
(See Replacing a toner cartridge on page 67.)
 The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 71.)
Hollow print
 Make sure that you use paper that meets our specifications. (See
Acceptable paper and other print media on page 11.)
 Choose Plain paper (Thick) mode in the printer driver, choose
Plain (Thick) in the machine
’s Paper Type menu setting or use
thinner paper than you are currently using. (See Paper type
on page 17 and Basic tab in the Software User’s Guide on the
CD-ROM.)
 Check the machine
’s environment. Conditions such as high humidity
can cause hollow print. (See Choosing a location on page 34.)
 The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 71.)
Grey background
 Make sure that you use paper that meets our specifications. (See
Acceptable paper and other print media on page 11.)
 Check the machine
’s environment. Conditions such as high
temperatures and high humidity can increase the amount of
background shading. (See Choosing a location on page 34.)
 The toner cartridge may be damaged. Put in a new toner cartridge.
(See Replacing a toner cartridge on page 67.)
 The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 71.)
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
ABCDEFGH
abcdefghijk
ABCD
abcde
01234
ABCDEFGH
abcdefghijk
ABCD
abcde
01234