Brother HL 4570CDWT User Manual
Page 170
Troubleshooting
164
6
Color misregistration
Make sure that the machine is on a solid level surface.
Perform the auto color registration using the control panel (see Auto
Registration on page 83) or perform the manual color registration using the
control panel (see Manual Registration on page 84).
Put in a new drum unit. (See Replacing the drum unit on page 102.)
Put in a new belt unit. (See Replacing the belt unit on page 106.)
Uneven density appears
periodically across the page
Perform the calibration. (See Color Calibration on page 83.)
Identify the color that is uneven and put in a new toner cartridge for that color.
(See Replacing the toner cartridges on page 97.)
To identify the color of the toner cartridge, visit us at
o view our FAQs and troubleshooting tips.
Put in a new drum unit. (See Replacing the drum unit on page 102.)
Missing image at thin line
Make sure toner save mode is off in the control panel or the printer driver.
Change the print resolution.
If you use a Windows printer driver, choose Improve pattern printing or
Improve Thin Line in Print Setting of Basic tab. (See Settings Dialog
on page 32.)
Wrinkle
Change to the recommended type of paper. (See Recommended paper and
print media on page 2.)
Make sure that the back cover is closed properly.
Make sure that the two gray levers inside the back cover are in the up position.
Make sure that the media type setting in the driver matches the type of paper
you are using. (See Type and size of paper on page 2.)
Offset image
Make sure that the media type setting in the driver matches the type of paper
you are using. (See Type and size of paper on page 2.)
Make sure that the two gray levers inside the back cover are in the up position.
Check the machine’s environment. Conditions such as low humidity and low
temperatures may cause this print quality problem.
Put in a new drum unit. (See Replacing the drum unit on page 102.)
Examples of poor print quality
Recommendation
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