User Manual

Troubleshooting and routine maintenance
45
C
Improving the print quality C
Examples of poor print
quality
Recommendation
Faint
 Check the machine’s environment. Conditions such as humidity, high
temperatures, and so on, may cause this print fault. (See Choosing a location
on page 33.)
 If the whole page is too light, Toner Save mode may be on. Turn off Toner
Save mode in the machine’s menu settings or in the printer Properties of the
driver. (See Toner save on page 17 or Advanced tab in the Software User’s
Guide on the CD-ROM.)
If this problem occurs when making copies, turn off Toner Save mode in the
machine’s menu setting. (See Toner save on page 17.)
 Clean the scanner window and the primary corona wire of the drum unit. (See
Cleaning the laser scanner window on page 58 and Cleaning the corona wire
on page 60.) If the print quality has not improved, put in a new drum unit. (See
Replacing the drum unit (DR-3150) on page 65.)
 Put in a new toner cartridge. (See Replacing the toner cartridge (TN-3135/TN-
3175) on page 62.)
Grey background
 Make sure that you use paper that meets our specifications. (See Acceptable
paper and other media on page 9.)
 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 33.)
Install a new toner cartridge. (See Replacing the toner cartridge (TN-3135/TN-
3175) on page 62.)
 Clean the primary corona wire and the drum unit. (See Cleaning the corona
wire on page 60 and Cleaning the drum unit on page 61.) If the print quality
has not improved, put in a new drum unit. (See Replacing the drum unit
(DR-3150) on page 65.)
Ghost
 Make sure that you use paper that meets our specifications. Rough-surfaced
paper or thick paper may cause this problem.
 Make sure that you choose the correct media type in the printer driver or in the
machine’s Paper Type menu setting. (See Acceptable paper and other media
on page 9 and Basic tab in the Software User’s Guide on the CD-ROM.)
 Put in a new drum unit. (See Replacing the drum unit (DR-3150) on page 65.)
Toner specks
 Make sure that you use paper that meets our specifications. Rough-surfaced
paper may cause the problem. (See Acceptable paper and other media on
page 9.)
 Clean the primary corona wire and the drum unit. (See Cleaning the corona
wire on page 60 and Cleaning the drum unit on page 61.) If the print quality
has not improved, put in a new drum unit. (See Replacing the drum unit
(DR-3150) on page 65.)
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ABCD
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C
DE
F
d
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BC
b
c
d
2
3
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ABCD
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ABCD
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