Improving the print quality

If you have a print quality problem, print a test page first (Menu, 4, 2, 3). If the printout looks good, the problem is probably not the machine. Check the interface cable or try the machine on another computer.
Note Note
 
You can resolve a print quality problem by replacing a toner cartridge with a new one when the LCD shows the Toner Life End message.
Examples of poor print quality
Recommendation
White lines or bands or ribbing across the page
Graphic
• 
Make sure that the machine is on a solid level surface.
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Make sure that the toner cartridges are installed properly. (See Replacing a toner cartridge.)
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Shake the toner cartridges gently.
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Make sure that the drum unit is installed properly. (See Replacing the drum unit.)
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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 media.)
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Clean the laser scanner windows with a soft cloth. (See Cleaning the laser scanner windows.)
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The drum unit may be damaged. Put in a new drum unit. (See Replacing the drum unit.)
Colors are light or unclear on the whole page.
Graphic
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Make sure that the recommended paper was used.
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Change the paper to freshly unpacked paper.
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Make sure that the front cover is closed properly.
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Shake the toner cartridges gently.
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Clean the laser scanner windows with a soft cloth. (See Cleaning the laser scanner windows.)
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Turn off Toner Save. (See Toner save.)
White streaks or bands down the page
Graphic
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Shake the toner cartridges gently.
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Clean the laser scanner windows with a soft cloth. (See Cleaning the laser scanner windows.)
Colored streaks or bands down the page
Graphic
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One of the toner cartridges may be damaged. Replace the toner cartridge that matches the color of the streak or bond.
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Clean all four corona wires (one for each color) of the drum unit by sliding the green tab. (See Cleaning the corona wires.)
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Make sure each corona wire’s green tab is at the home position (Bsymbol.dtri).
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The drum unit may be damaged. Put in a new drum unit. (See Replacing the drum unit.)
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The fuser unit may have a smudge mark. Call Brother or your dealer for service.
Colored lines across the page
Graphic
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One of the toner cartridges may be damaged. Replace the toner cartridge that matches the color of the line.
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The drum unit may be damaged. Put in a new drum unit. (See Replacing the drum unit.)
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Clean all four corona wires (one for each color) of the drum unit by sliding the green tab. (See Cleaning the corona wires.)
• 
Clean the laser scanner windows with a soft cloth. (See Cleaning the laser scanner windows.)
White spots or hollow print
Graphic
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Make sure that you use paper that meets our specifications. (See Acceptable paper and other media.)
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Make sure that the recommended paper was used.
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Choose Thick paper mode in the printer driver or in the machine’s Paper Type menu setting, or use thinner paper than you are currently using. (See Paper type and Basic tab in the Software User’s Guide on the CD-ROM.)
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Change the paper to fresh, unopened paper.
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Check the machine’s environment. Conditions such as high humidity can cause hollow print. (See Choosing a location.)
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Clean all four corona wires (one for each color) of the drum unit by sliding the green tab. (See Cleaning the corona wires.) If the print quality has not improved, put in a new drum unit. (See Replacing the drum unit.)
Clean the drum unit. (See Cleaning the drum unit.)
Completely blank or some colors are missing.
Graphic
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Make sure that the toner cartridges are installed properly. (See Replacing a toner cartridge.)
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One of the toner cartridges may be damaged. Identify the missing color and put in a new toner cartridge for the color with the white line. (See Replacing a toner cartridge.)
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The drum unit may be damaged. Put in a new drum unit. (See Replacing the drum unit.)
Colored spots at 75 mm
Graphic
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Dust, paper powder, glue, and so on may stick to the surface of the photosensitive drum (OPC) and cause black or white spots to appear on printed documents.
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Make a few copies of a blank, white sheet of paper. (See Making multiple copies.)
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If you still see the spots on printed documents after making multiple copies, clean the drum unit (See Cleaning the drum unit.)
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If the print quality still has not improved you need to install a new drum. (See Replacing the drum unit.)
Toner scatter or toner stain
Graphic
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Check the machine’s environment. Conditions such as high humidity and high temperatures may cause this print quality problem. (See Choosing a location.)
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Make sure that you use paper that meets our specifications. Rough-surfaced paper may cause the problem. (See Acceptable paper and other media.)
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Install a new toner cartridge for the color causing the problem. (See Replacing a toner cartridge.)
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Clean the corona wires and the drum unit for the color causing the problem. (See Cleaning the corona wires and Cleaning the drum unit.) If the print quality has not improved, put in a new drum unit. (See Replacing the drum unit.)
Grey or colored background
Graphic
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Make sure that you use paper that meets our specifications. (See Acceptable paper and other media.)
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Check the machine’s environment. Conditions such as high temperatures and high humidity can increase the amount of background shading. (See Choosing a location.)
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Install a new toner cartridge for the color causing the problem. (See Replacing a toner cartridge.)
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Clean the corona wires of the drum unit for the color causing the problem. (See Cleaning the corona wires.) If the print quality has not improved, put in a new drum unit. (See Replacing the drum unit.)
Page skewed
Graphic
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Make sure the paper or other print media is loaded properly in the paper tray and that the guides are not too tight or too loose against the paper stack.
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Set the paper guides correctly.
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The paper tray may be too full.
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Make sure that you use paper that meets our specifications. (See Acceptable paper and other media.)
Ghost
Graphic
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Make sure that you use paper that meets our specifications. Rough-surfaced paper or thick paper may cause the problem. (See Acceptable paper and other media.)
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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 and Basic tab in the Software User’s Guide on the CD-ROM.)
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The drum unit may be damaged. Put in a new drum unit. (See Replacing the drum unit.)
The color of your printouts are not what you expected.
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Make sure that the toner cartridges are installed properly. (See Replacing a toner cartridge.)
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Make sure that the toner cartridges are not empty. (See Toner life end message.)
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Make sure that the drum unit is installed properly. (See Replacing the drum unit.)
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Make sure that the belt unit is installed properly. (See Replacing the belt unit.)
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Perform the calibration by using the control panel.
Press Menu, 4, 6.
1
Press OK to select Calibrate.
2
Press 1 to select Yes.
(For more information, see Software User’s Guide on the CD-ROM.)
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Adjust the color by using the custom setting in the printer driver. Colors the machine can print and colors you see on a monitor are different. The machine may not be able to reproduce the colors on your monitor.
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Make sure that you use paper that meets our specifications. (See Acceptable paper and other media.)
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The drum unit may be damaged. Put in a new drum unit. (See Replacing the drum unit.)
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Put in a new belt unit. (See Replacing the belt unit.)
All one color
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Clean the corona wires of the drum unit for the color causing the problem. (See Cleaning the corona wires.) If the print quality has not improved, put in a new drum unit. (See Replacing the drum unit.)
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The drum unit may be damaged. Put in a new drum unit. (See Replacing the drum unit.)
Color misregistration
Graphic
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Make sure that the drum unit is installed properly. (See Replacing the drum unit.)
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Make sure that the belt unit is installed properly. (See Replacing the belt unit.)
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Make sure that the waste toner box is installed properly. (See Replacing the waste toner box.)
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Perform the auto color registration by using the control panel. Press Menu, 4, 7, 1.
or
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Perform the manual color registration by using the control panel.
1
Print the correction chart by using the control panel. Press Menu, 4, 8, 1.
2
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.
Graphic
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The drum unit may be damaged. Put in a new drum unit. (See Replacing the drum unit.)
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Put in a new belt unit. (See Replacing the belt unit.)
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Put in a new waste toner box. (See Replacing the waste toner box.)
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If solid areas of color or images have cyan, magenta or yellow fringes, you can use the auto-registration feature to correct the problem.
Uneven density appears periodically across the page
Graphic
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Identify the color that is uneven and put in a new toner cartridge for that color. (See Replacing a toner cartridge.)
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The drum unit may be damaged. Put in a new drum unit. (See Replacing the drum unit.)
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Make sure that the fuser unit is installed properly.
Missing image at edge
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Make sure that the toner cartridges are installed properly. (See Replacing a toner cartridge.)
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Make sure that the drum unit is installed properly. (See Replacing the drum unit.)
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One of the toner cartridges may be damaged. Identify the missing color and put in a new toner cartridge for the color with the white line. (See Replacing a toner cartridge.)
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The drum unit may be damaged. Put in a new drum unit. (See Replacing the drum unit.)
Missing image at thin line
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If you are using a Windows® printer driver, open Properties window, and then click Printing Preferences. Choose the Advanced tab, Device Option, Print Setting, and then check the Improve pattern printing or Improve Thin Line boxes.
Wrinkle
Graphic
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Check the paper type and quality. (See Acceptable paper and other media.)
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Make sure that the back cover is closed properly.
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Make sure that paper is loaded properly.
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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 and Basic tab in the Software User’s Guide on the CD-ROM.)
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Turn over the stack of paper in the tray or rotate the paper 180˚ in the input tray.
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Make sure that the drum unit is installed properly. (See Replacing the drum unit.)
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Make sure that the fuser unit is installed properly.
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If the problem continues, call your Brother dealer.
Insufficient gloss
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Check the paper type and quality. (See Acceptable paper and other media.)
Offset image
Graphic
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Check the machine’s environment. Conditions such as high temperatures and humidity can cause this problem. (See Choosing a location.)
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Make sure that you use paper that meets our specifications. (See Acceptable paper and other media.)
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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 and Basic tab in the Software User’s Guide on the CD-ROM.)
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The drum unit may be damaged. Put in a new drum unit. (See Replacing the drum unit.)
Poor fixing
Graphic
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Make sure that you use paper that meets our specifications. (See Acceptable paper and other media.)
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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 and Basic tab in the Software User’s Guide on the CD-ROM.)
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Make sure that the release lever of the fuser unit is in the closed position.
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If the problem continues, call your Brother dealer.
Poor fixing when printed on thick paper
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Choose Thick paper mode in the printer driver or in the machine’s Paper Type menu setting. (See Paper type and Basic tab in the Software User’s Guide on the CD-ROM.)
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Make sure that you use paper that meets our specifications. (See Acceptable paper and other media.)
Curled or wave
Graphic
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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 and Basic tab in the Software User’s Guide on the CD-ROM.)
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Check the paper type and quality. High temperatures and high humidity will cause paper to curl.
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If you do not use the machine often, the paper may have been in the paper tray too long. Turn over the stack of paper in the paper tray. Also, fan the paper stack and then rotate the paper 180˚ in the paper tray.
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Follow these steps:
1
Open the back cover.
2
Push the grey lever to the right as shown below.
Graphic
3
Close the back cover and re-send the print job.
Note Note
 
When you have finished printing, open the back cover and reset the lever back to the original position.
Envelope creases
Graphic
 
1
Open the back cover.
2
Pull down the two grey levers, one on the left-hand side and one on the right-hand side to the envelope position, as shown in the illustration below.
Graphic
3
Close the back cover and re-send the print job.
Note Note
 
When you have finished printing, open the back cover and reset the two grey levers back to the original position.
White lines or ribbing down the page on duplex print
Graphic
Note Note
 
Position B is only for duplex printing with recycled paper when the temperature and humidity are low.
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Choose Plain Paper mode in the printer driver and re-send the print job.
If the problem is not solved after printing a few pages, follow these steps:
1
Open the back cover.
2
Pull down the two grey levers, one on the left-hand side and one on the right-hand side, to position B as shown in the illustration below.
Graphic
3
Close the back cover.
4
Choose Plain Paper(Thick) mode in the printer driver and re-send the print job.
5
If the problem is not solved after printing a few pages, choose Thin Paper mode in the printer driver and re-send the print job.
Note Note
 
When you have finished printing, open the back cover and reset the two grey levers back to the original position.
• 
Use thicker paper than you are now using.
Toner scatter or toner stain on the edge of duplex pages
Graphic
CAUTION CAUTION
 
We recommend that you place the drum unit and toner cartridges on a clean, flat surface with a piece of disposable paper underneath them in case you accidentally spill or scatter toner.
 
DO NOT touch the surface of the photosensitive drum.
Take all the toner cartridges out of the drum unit and turn the drum unit over. Wipe the toner on the edge of drum unit with a dry lint free soft cloth as shown in the illustration.
Graphic
Colored streaks or bands down the reverse side of printed pages
Graphic
• 
Replace the waste toner box with new one. (See Replacing the waste toner box.)