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Troubleshooting and routine maintenance
123
C
Color misregistration
Make sure that the drum unit is installed properly. (See Replacing the
drum unit on page 174.)
Make sure that the belt unit is installed properly. (See Replacing the
belt unit on page 180.)
Make sure that the waste toner box is installed properly. (See
Replacing the waste toner box on page 185.)
Perform the auto color registration by using the control panel. Press
Menu, 4, 7, 1.
Or
Perform the manual color registration by using the control panel.
a Print the correction chart by using the control panel. Press
Menu, 4, 8, 1.
b Enter the correction value on the chart. Press Menu, 4, 8, 2.
If the color misregistration is not corrected after registering the color
manually, take all the toner cartridges out of the drum unit and turn
the drum unit over, then make sure that four drum unit gears are in
the home position. The home position of each drum can be identified
by matching the number on the drum unit gear to the same number
on the side of the drum unit as shown in the illustration.
The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum unit on page 174.)
Put in a new belt unit. (See Replacing the belt unit on page 180.)
Put in a new waste toner box. (See Replacing the waste toner
box on page 185.)
If solid area of color or images have cyan, magenta or yellow fringes,
you can use the auto registration feature to correct the problem.
Examples of poor print
quality
Recommendation
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