Brother DCP 7065DN User Manual

Troubleshooting
57
B
Print quality difficulties
DifficultiesSuggestions
Printed pages are curled.Low quality thin or thick paper or not printing on the recommended side of the 
paper could cause this problem. Try turning over the stack of paper in the 
paper tray.
Make sure that you choose the Paper Type that suits the print media type you 
are using. (See Acceptable paper and other print media on page 16.)
Printed  pages  are  smeared. The Paper Type setting may be incorrect for the type of print...

58
Your computer cannot find your 
machine.(Windows®) The firewall setting on your PC may be rejecting the necessary 
network connection. (For details, see the instructions above.)
(Macintosh)
The computer may be unable to detect the machine due to the firewall 
settings. Change or disable the firewall settings. If you are using a third-party 
personal Firewall software, see the Users Guide for your software or contact 
the software manufacturer.
Re-select your machine in the Device Selector...

Troubleshooting
59
B
Improving the print qualityB
If you have a print quality problem, make a copy first (put a document on the scanner glass and 
press Start). If the printout looks good, the problem is probably not the machine. Check the 
interface cable connections or try printing a different document. If the printout or test page printed 
from the machine 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...

60
 
Gray backgroundMake sure that you use paper that meets our specifications. See 
Acceptable paper and other print media on page 16.
Check the machine’s environment. Conditions such as high 
temperatures and high humidity can increase the amount of 
background shading. See the Safety and Legal booklet.
Put in a new toner cartridge. See Replacing the toner cartridge 
on page 29.
Put in a new drum unit. See Replacing the drum unit on page 35.
 
GhostMake sure that you use paper that meets our...

Troubleshooting
61
B
 
Hollow printMake sure that you use paper that meets our specifications. See 
Acceptable paper and other print media on page 16.
Choose Thick Paper mode in the printer driver, choose Thick in 
the machine’s Paper Type menu setting or use thinner paper than 
you are currently using. See Paper Type on page 15 and Basic 
tab in the Software Users Guide.
Check the machine’s environment. Conditions such as high 
humidity can cause hollow print. See the Safety and Legal 
booklet.
The...

62
 
White lines, bands or ribbing 
across the pageCheck the machines environment. Conditions such as high 
humidity and high temperatures may cause this print quality 
problem.
If the problem is not solved after printing a few pages, put in a new 
drum unit. (See Replacing the drum unit on page 35.)
 
White Spots on black text and 
graphics at 94 mm (3.71 in.) 
intervals
 
Black Spots at 94 mm (3.71 in.) 
intervalsMake ten copies of a blank, white sheet of paper. See How to 
copy on page 24. If the...

Troubleshooting
63
B
 
Black toner marks across the 
pageMake sure that you use paper that meets our specifications. See 
Acceptable paper and other print media on page 16.
If you use label sheets for laser printers, the glue from the sheets 
may sometimes stick to the OPC drum surface. Clean the drum 
unit. See Cleaning the drum unit in Appendix A of the Advanced 
Users Guide.
Do not use paper that has clips or staples because they will 
scratch the surface of the drum.
If the unpacked drum unit is...

64
 
Page skewedMake sure that 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.
Set the paper guides correctly. See Loading paper on page 8.
If you are using the manual feed slot, see Loading paper in the 
manual feed slot on page 10.
The paper tray may be too full. See Loading paper on page 8.
Check the paper type and quality. See Acceptable paper and 
other print media on page 16.
Check for loose...

Troubleshooting
65
B
 
Envelope creasesMake sure that the two green envelope levers inside the back 
cover are pulled down when you print the envelope.
 
Note
When you have finished printing, open the back cover and reset 
the two green levers back to their original position.
 
Examples of poor print qualityRecommendation
 

66
 
Poor fixingOpen the back cover and make sure that the two green envelope 
levers on the left and right hand sides are in the up position.
 
Choose Improve Toner Fixing mode in the printer driver. See 
Other Print Options (for Windows®) or Print Settings (For 
Macintosh) in the Software Users Guide. 
If this selection does not provide enough improvement, select 
Thicker Paper in Media Type settings.
Examples of poor print qualityRecommendation
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789....