Brother Hl 4070cdw User Manual

Troubleshooting
162
7
Colored spots at 75mm
 

If the problem is not solved after printing a few pages, the drum unit may have 
glue from a label stuck on the drum surface. Clean the drum unit. (See 
Cleaning the drum uniton page 133.)
Toner scatter or toner stain
 

Check the printer’s environment. Conditions such as high humidity and high 
temperatures may cause this print quality problem. (See Positioning the 
printeron page 5.)

Make sure that you use paper that meets our specifications. (See About...

Troubleshooting
163
7
Color misregistration
 

Make sure that the drum unit is installed properly.

Make sure that the belt unit is installed properly.

Make sure that the waste toner box is installed properly.

Perform the auto color registration by using the control panel (see Auto 
Registrationon page 91) or perform the manual color registration by using the 
control panel (see Manual Registrationon page 92).
If the color mis-registration is not corrected after registering the color 
manually, take...

Troubleshooting
164
7
Wrinkle
 

Change to the recommended type of paper.

Make sure that the back cover is closed properly.

Make sure that the drum unit is installed properly.

Make sure that the fuser unit is installed properly.

Replace the fuser unit. Call Brother Customer Service.
Offset image
 

Check the printer’s environment. Conditions such as humidity and high 
temperatures may cause this print quality problem. (See Positioning the 
printeron page 5.)

Make sure that you use paper that meets...

Troubleshooting
165
7
Curled or wavy
 

Check the paper type and quality. High temperatures and high humidity will 
cause paper to curl. (See About paperon 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.

Follow these steps:
aOpen the back cover.
bPush the gray lever to the right as shown below. 
cClose the back cover and re-send...

Troubleshooting
166
7
Envelope creases
 7
aOpen the back cover.
bPull down the two gray levers, one on the left-hand side and one on the 
right-hand side, to the envelope position as shown in the illustration below.
 
cClose the back cover and re-send the print job.
Note
When you have finished printing, open the back cover and reset the two gray 
levers back to the original position.
 
Examples of poor print qualityRecommendation
ABCDEFG
EFGHIJKLMN
 

Troubleshooting
167
7
Toner scatter or toner stain on the 
edge of duplex  pages
 
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...

Troubleshooting
168
7
White lines or ribbing down the 
page on duplex  print
 
Note
Position B is only for duplex  
printing with recycled paper 
when the temperature and 
humidity are low.
 

Choose Thin 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:
aOpen the back cover.
bPull 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....

Troubleshooting
169
7
Solving print problems7
Network problems7
For problems concerning using your printer on a Network, see the Network User’s Guide on the CD-ROM we 
have supplied.
Other 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...

Troubleshooting
170
7
For Macintosh® with USB7
Printing from DOS 7
BR-Script 3 (HL-4050CDN / HL-4070CDW only)7
ProblemRecommendation
The printer does not appear in 
Print Center (Mac OS
® X 10.2) 
or Print Setup Utility (M ac 
OS
® X 10.3 or greater).
Make sure that the printer is turned on.

Make sure that the USB interface cable is connected correctly.

Make sure the printer driver is installed correctly.
Unable to print from the 
application.
Make sure that the supplied Macintosh
® printer driver is...

171
A
A
Printer specificationsA
EngineA
1The printing speed may change depending on the type of document you print.
2Print speed may be slower when the printer is connected by wireless LAN.
3From standard paper tray and optional paper tray.
4First print out time may change if the machine is calibrating or registering itself.
AppendixA
ModelHL-4040CNHL-4040CDNHL-4050CDNHL-4070CDW
TechnologyElectrophotographic
Print speed
12 
(A4 size/      
Letter size)Standard 
(A4/Letter)Monochrome
Up to 20 ppm (A4...