Troubleshooting and routine maintenance
71
C
Colored streaks or bands down
the page
One of the toner cartridges may be damaged. Replace the toner
cartridge that matches the color of the streak or band. (See Replacing
a toner cartridgeon page 117.)
Clean all four corona wires (one for each color) of the drum unit by
sliding the green tab. (See Cleaning the corona wireson page 104.)
Make sure each corona wire’s green tab is at the home position (b).
The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum uniton page 122.)
The fuser unit may have a smudge mark. Call Brother Customer
Service at 1-877-BROTHER (1-877-276-8437) (in USA) or
1-877-BROTHER (in Canada).
Colored lines across the page
One of the toner cartridges may be damaged. Replace the toner
cartridge that matches the color of the line. (See Replacing a toner
cartridge on page 117.)
The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum uniton page 122.)
Clean all four corona wires (one for each color) of the drum unit by
sliding the green tab. (See Cleaning the corona wireson page 104.)
Clean the laser scanner windows with a soft cloth. (See Cleaning the
laser scanner windowson page 100.)
White spots or hollow print
Make sure that you use paper that meets our specifications. (See
Acceptable paper and other mediaon page 10.)
Make sure that the recommended paper was used.
Choose Thick paper mode in the printer driver or in the machines
Paper Type menu setting, or use thinner paper than you are currently
using. (See Paper typeon page 21 and Basic tab in the Software
User’s Guide on the CD-ROM.)
Change the paper to fresh, unopened paper.
Check the machines environment. Conditions such as high humidity
can cause hollow print. (See Choosing a locationon page 50.)
Clean all four corona wires (one for each color) of the drum unit by
sliding the green tab. (See Cleaning the corona wireson page 104.)
If the print quality has not improved, put in a new drum unit. (See
Replacing the drum uniton page 122.)
Completely blank or some
colors are missing.
Make sure that the toner cartridges are installed properly. (See
Replacing a toner cartridgeon page 117.)
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 cartridgeon page 117.)
The drum unit may be damaged. Put in a new drum unit. (See
Replacing the drum uniton page 122.)
Examples of poor print
quality
Recommendation
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