Improving The Print Quality - Brother HL-5470DW User Manual

Troubleshooting

Improving the print quality

If you have a print quality problem, print a test page first (see Machine Info. uu page 78). If the printout looks
good, the problem is probably not the machine. Check the interface cable or try the machine on another
computer. If the printout has a quality problem, check the following steps first. And then, if you still have a
print quality problem, check the chart below and follow the recommendations.
Note
Using non-Brother supplies may affect the print quality, hardware performance, and machine reliability.
a
To get the best print quality, we suggest using the recommended paper. Check that you are using paper
that meets our specifications. (See Acceptable paper and other print media uu page 2.)
b
Check that the drum unit and toner cartridge are installed properly.
Examples of poor print quality
ABCDEFGH CDEF
abcdefghijk defg
A B C D B C
a b c d e b c d
0 1 2 3 4 2 3
Faint
ABCDEFGH
abcdefghijk
A B C D
a b c d e
0 1 2 3 4
Gray background
Recommendation
 Take out the drum unit and toner cartridge assembly. Hold the assembly level
with both hands and gently shake it from side to side several times to spread
the toner evenly inside the cartridge.
 If the LCD shows Replace Toner, put in a new toner cartridge.
uu Replacing the toner cartridge uu page 104
Check the machine's environment. Conditions such as humidity, high

temperatures, and so on, may cause this print fault.
uu Product Safety Guide: Choosing a location
 If the whole page is too light, Toner Save may be turned on. Turn off
Toner Save in the machine's menu settings or Toner Save Mode in the
Advanced tab (For Windows
Print Settings (For Macintosh) of the driver.
 Clean the corona wire of the drum unit.
uu Cleaning the corona wire uu page 118
 Put in a new toner cartridge.
uu Replacing the toner cartridge uu page 104
 Put in a new drum unit.
uu Replacing the drum unit uu page 111
 Make sure that you use paper that meets our specifications.
uu Acceptable paper and other print media uu page 2
 Check the machine's environment. Conditions such as high temperatures
and high humidity can increase the amount of background shading.
uu Product Safety Guide: Choosing a location
 Put in a new toner cartridge.
uu Replacing the toner cartridge uu page 104
 Put in a new drum unit.
uu Replacing the drum unit uu page 111
®
) or the Advanced print settings of
6
6
151