Brother DCP 9045CDN User Manual

Troubleshooting and routine maintenance
63
C
Printing difficulties
DifficultiesSuggestions
No printout.„Check that the machine is plugged in and the power switch is turned on.
„Check that the toner cartridges and drum unit are installed properly. (See 
Replacing the drum unit on page 120.)
„Check the interface cable connection on both the machine and your computer. 
(See the Quick Setup Guide.)
„Check that the correct printer driver has been installed and chosen.
„Check to see if the LCD is showing an...

64
Scanning difficulties
DifficultiesSuggestions
TWAIN errors appear while 
scanning.Make sure that the Brother TWAIN driver is chosen as the primary source. In 
PaperPort
 ™ 11SE, click File, Scan or Get Photo and choose the Brother 
TWAIN driver.
Network scanning does not work. See Network difficulties on page 65.
Software difficulties
DifficultiesSuggestions
Cannot install software or print. Run the Repair MFL-Pro Suite program on the CD-ROM. This program will repair 
and reinstall the software....

Troubleshooting and routine maintenance
65
C
Printed pages are smeared. The Paper Type setting may be incorrect for the type of print media you are using, 
or the print media may be too thick or have a rough surface. (See Acceptable paper 
and other media on page 10 and Basic tab in the Software User’s Guide on the 
CD-ROM.)
Printouts are too light.„If this problem occurs when making copies, turn Toner Save mode to off in the 
machine menu settings. (See Toner save on page 22.)
„Set Toner Save mode to...

66
The network scanning feature 
does not work.
The network printing feature does 
not work.(For Windows® only) The firewall setting on your PC may be rejecting the 
necessary network connection. Follow the instructions below to configure your 
firewall. If you are using personal firewall software, see the User’s Guide for your 
software or contact the software manufacturer.
For Windows
® XP SP2 users:
aClick the Start button, Control Panel, Network and Internet Connections, 
and then Windows Firewall....

Troubleshooting and routine maintenance
67
C
The network scanning feature 
does not work.
The network printing feature does 
not work.
(continued)For Windows Vista® users:
aClick the Start button, Control Panel, Network and Internet, Windows 
Firewall and click Change settings.
bWhen the User Account Control screen appears, do the following.
„Users who have administrator rights: Click Continue.
„For users who do not have administrator rights: Enter the administrator 
password and click OK.
cMake sure...

68
Improving the print qualityC
If you have a print quality problem, print a test page first (Menu, 3, 2, 3). If the printout looks good, 
the problem is probably not the machine. Check the interface cable or try the machine on another 
computer.
Note
You can resolve a print quality problem by replacing a toner cartridge with a new one when the 
LCD shows the Toner Life End message.
 
Examples of poor print 
qualityRecommendation
White lines or bands or ribbing 
across the page
 
„Make sure that the...

Troubleshooting and routine maintenance
69
C
Coloured streaks or bands 
down the page
 
„One of  the toner cartridges may be damaged. Replace the toner 
cartridge that matches the colour of the streak or band. (See 
Replacing a toner cartridge on page 115.)
„Clean all four corona wires (one for each colour) of the drum unit by 
sliding the green tab. (See Cleaning the corona wires on page 102.)
„Make sure each corona wire’s green tab is at the home position (b).
„The drum unit may be damaged. Put in a...

70
Coloured spots at 75 mm
 
„Dust, paper powder, glue, and so on may stick to the surface of the 
photosensitive drum (OPC) and cause black or white spots to appear 
on printed documents.
„Make a few copies of a blank, white sheet of paper. (See Making 
multiple copies on page 28.) 
„If you still see the spots on printed documents after making multiple 
copies, clean the drum unit. (See Cleaning the drum unit 
on page 105.)
„If the print quality still has not improved you need to install a new 
drum....

Troubleshooting and routine maintenance
71
C
Ghost „Make sure that you use paper that meets our specifications. Rough-
surfaced paper or thick paper may cause the problem. (See 
Acceptable paper and other media on page 10.)
„Make sure that you choose the proper media type in the printer driver 
or in the machine
’s Paper Type menu setting. (See Acceptable paper 
and other media on page 10 and Basic tab in the Software User’s 
Guide on the CD-ROM.)
„The drum unit may be damaged. Put in a new drum unit....

72
Colour misregistration
 
„Make sure that the drum unit is installed properly. (See Replacing the 
drum unit on page 120.)
„Make sure that the belt unit is installed properly. (See Replacing the 
belt unit on page 127.)
„Make sure that the waste toner box is installed properly. (See 
Replacing the waste toner box on page 132.)
„Perform the auto colour registration by using the control panel. Press 
Menu, 3, 7, 1.
Or
„Perform the manual colour registration by using the control panel.
aPrint the...