Brother Hl 5380dn User Manual

Troubleshooting
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 To avoid print quality problems, DO NOT touch the shaded parts shown in the illustrations.
 
dPut the toner cartridge back into the drum unit until you hear it lock into place. If you put the cartridge in 
properly, the blue lock lever will lift automatically.
eClose the front cover.
 

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Improving the print quality7
If you have a print quality problem, print a test page first (see Menu table on page 89). If the printout looks 
good, the problem is probably not the printer. Check the interface cable or try the printer on another computer.
This section gives information on the following topics.
Examples of poor print 
qualityRecommendation
Faint„Check the printer’s environment. Conditions such as humidity, high 
temperatures, and so on, may cause this print fault. See...

Troubleshooting
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Hollow print„Make sure that you use paper that meets our specifications. See About paper on 
page 6.
„Choose Thick Paper mode in the printer driver, or use thinner paper than what 
you are now using.
„Check the printer’s environment. Conditions such as high humidity can cause 
hollow print. See Positioning the printer on page 5.
„The drum unit may be damaged. Put in a new drum unit. See Replacing the drum 
unit on page 114.
All black„Clean the primary corona wire inside the drum...

Troubleshooting
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White Spots on black text 
and graphics at 94 mm 
(3.7 in.) intervals
Black Spots at 94 mm 
(3.7 in.) intervals„If the problem is not solved after printing a few pages, the drum unit may have 
glue from a label stuck on the OPC drum surface.
Clean the drum unit as follows:
7
1) Put the print sample in front of the drum unit, and find the exact position of the 
poor print.
2) Turn the drum unit gear by hand while looking at the surface of the OPC 
drum (1).
3) When you have found the...

Troubleshooting
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Black toner marks across the 
page„The drum unit may be damaged. Put in a new drum unit. See Replacing the drum 
unit on page 114.
„The toner cartridge may be damaged. Put in a new toner cartridge. See 
Replacing the toner cartridge on page 108.
„Make sure that you use paper that meets our specifications. See About paper on 
page 6.
„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 Clean the...

Troubleshooting
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Curled or wavy„Check the paper type and quality. High temperatures and high humidity will cause 
paper to curl. See About paper on page 6.
„If you do not use the printer 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.
Wrinkles or creases„Make sure that the paper is loaded properly. See Printing on plain paper, bond 
paper or transparencies from...

Troubleshooting
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Poor Fixing„Open the back cover and make sure that the two blue levers on the left and right 
hand sides are in the up position.
„Choose Improve Toner Fixing mode in the printer driver. See Improve Print 
Output in Advanced tab on page 40 (For Windows
® printer driver), Advanced 
options on page 52 (For BR-Script printer driver for Windows
®) or Print Settings 
on page 61 (For Macintosh). If this selection does not provide enough 
improvement, select Thicker Paper in Media Type...

Troubleshooting148
7
Curled „
Lift up the Face-down Output Tray Support Flap 2 (Support Flap 2) (1).
„ Choose  Reduce Paper Curl  mode in the printer driver. See  Improve Print 
Output  in Advanced tab  on page 40 (For Windows
® printer driver),  Advanced 
options  on page 52 (For BR-Script printer driver for Windows
®) or Print Settings  
on page 61 (For Macintosh).
„ Turn the paper over in the paper tray, and print again (excluding Letterhead 
paper). If the problem remains, slid e the Anti-Curl...

Troubleshooting
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Solving print problems7
ProblemRecommendation
The printer prints unexpectedly 
or it prints garbage data.„Make sure that the printer cable is not too long. We recommend that you use a 
parallel or USB cable that is no longer than 2 meters (6.5 feet).
„Make sure that the printer cable is not damaged or broken.
„If you are using an interface-switching device, remove it. Connect your computer 
directly to your printer, and then try again.
„Make sure that you have chosen the correct...

Troubleshooting
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Network problems 7
For problems concerning using your printer on a Network, see the Network User’s Guide on the CD-ROM we 
have supplied. Click Documentation on the menu screen.
The Network User’s Guide in HTML format will be installed automatically when you install the driver. Click the 
Start button, All Programs
1, your printer, and then User’s Guide.
You can also view the manuals in PDF format by accessing the Brother Solutions Center 
(http://solutions.brother.com/
).
1Programs...