Brother DCP 9040CN User Manual

							49
C
C
TroubleshootingC
IMPORTANT
For technical help, you must call the country where you bought the machine. Calls must be 
made from within that country.
 
If you are having difficulty with your machineC
If you think there is a problem, check the chart below and follow the troubleshooting tips. You can 
solve most problems by yourself.
If you need additional help, the Brother Solutions Center offers the latest FAQs and 
troubleshooting tips.
Visit us at http://solutions.brother.com/
.
Troubleshooting and routine 
maintenance
C
Copy quality difficulties
DifficultiesSuggestions
Vertical black lines appears in 
copies.Black vertical lines on copies are typically caused by dirt or correction fluid on the 
glass strip, or one of the corona wires for printing is dirty. (See Cleaning the 
scanner on page 82 and Cleaning the corona wires on page 87.)
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 106.)
„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 error message. (See Error and 
maintenance messages on page 65.)
„Check that the machine is online: 
(For Windows Vista®
)
Click the Start button, Control Panel, Hardware and Sound, and then 
Printers. Right-click Brother DCP-XXXX Printer. Make sure that Use Printer 
Offline is unchecked.
(For Windows®
 XP and Windows Server®
 2003) 
Click the Start button and select Printers and Faxes. Right-click Brother 
DCP-XXXX Printer. Make sure that Use Printer Offline is unchecked.
(For Windows®
 2000) 
Click the Start button and select Settings and then Printers. Right-click 
Brother DCP-XXXX Printer. Make sure that Use Printer Offline is 
unchecked.
 
						

							
50
The machine prints unexpectedly 
or it prints garbage.„
Pull out the paper tray and wait until the machine stops printing. Then turn off 
the machine’s power switch and disconnect from the power for several 
minutes.
„ Check the settings in your application to make sure it is set up to work with 
your machine.
The machine prints the first couple 
of pages correctly, then some 
pages have text missing. „
Check the settings in your application to make sure that it is set up to work with 
your machine.
„ Your computer is not recognizing the machine
’s input buffer’s full signal. Make 
sure that you connected the interface cable correctly. (See  the Quick Setup 
Guide .)
The headers or footers appear 
when the document displays on the 
screen but they do not show up 
when it is printed. There is an unprintable area on the top and bottom of the page. Adjust the top and 
bottom margins in your document to allow for this.
The machine does not print on both 
sides of the paper even though the 
printer driver setting is Duplex. 
(DCP
-9042CDN only) Check the paper size setting in the printer driver. You need to select Letter, Legal 
or Folio.
The machine is not printing or has 
stopped printing and the machine’s 
Data LED turns on. Press 
Job Cancel . As the machine cancels the job and clears it from the memory 
it may produce an incomplete printout.
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 51.
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.
Cannot perform ‘2 in 1’ or ‘4 in 1’ 
printing. Check that the paper size setting in the application and in the printer driver are the 
same.
The machine does not print from 
Adobe Illustrator.  Try to reduce the print resolution. (See 
Advanced tab in the Software User’s Guide 
on the CD-ROM .) 
Printing difficulties (Continued)
DifficultiesSuggestions
 
						

							Troubleshooting and routine maintenance
51
C
Paper handling difficulties
DifficultiesSuggestions
The machine does not load paper.
The LCD shows No Paper or a 
Paper Jam message. „If there is no paper, load a new stack of paper into the paper tray.
„If there is paper in the paper tray, make sure it is straight. If the paper is curled, 
you should straighten it. Sometimes it is helpful to remove the paper, turn the 
stack over and put it back into the paper tray.
„Reduce the amount of paper in the paper tray, and then try again.
„Check that the MP tray mode is not chosen in the printer driver.
„If the LCD shows Paper Jam message and you still have a problem, see Paper 
jams on page 70.
The machine does not feed paper 
from the MP tray.„Fan the paper well and put it back in the tray firmly.
„Make sure that MP tray mode is chosen in the printer driver.
How do I  print on envelopes? You can load envelopes from the MP tray. Your application must be set up to print 
the envelope size you are using. This is usually done in the Page Setup or 
Document Setup menu of your application. (See your application’s manual for 
more information.)
Which paper can I use? You can use plain paper, recycled paper, envelopes and labels that are made for 
laser machines. (For details, see Acceptable paper and other media on page 12.)
There is a paper jam. (See Paper jams on page 70.)
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 media type you are 
using. (See Acceptable paper and other media on page 12.)
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 12 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 23.)
„Set Toner Save mode to off in the Advanced tab in the printer driver. (See 
Advanced tab in the Software User’s Guide on the CD-ROM.)
Network difficulties
DifficultiesSuggestions
Cannot print over a wired Network. Make sure your machine is powered on and is on-line and in Ready mode. Print 
the Network Configuration list to see your current Network settings. (See User 
Settings List on page 23.) Reconnect the LAN cable to the hub to verify that the 
cable and network connections are good. If possible, try connecting the machine 
to a different port on your hub using a different cable. If the connections are good, 
the upper LED of the back panel of the machine will be green.
 
						

							52
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 a 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. Make sure that Windows Firewall on the 
General tab is set to On.
bClick the Advanced tab and Settings... button of the Network Connection 
Settings.
cClick the Add button.
dTo add port 54925 for network scanning, enter the information below:
1. In Description of service: Enter any description, for example “Brother 
Scanner”.
2. In Name or IP address (for example 192.168.0.12) of the computer 
hosting this service on your network: Enter “Localhost”.
3. In External Port number for this service: Enter “54925”.
4. In Internal Port number for this service: Enter “54925”.
5. Make sure UDP is selected.
6. Click OK.
eIf you still have trouble with your network connection, click the Add button.
fTo add port 137 for both network scanning and network printing, enter the 
information below:
1. In Description of service: Enter any description, for example “Brother 
network scanning”
2. In Name or IP address (for example 192.168.0.12) of the computer 
hosting this service on your network: Enter “Localhost”.
3. In External Port number for this service: Enter “137”.
4. In Internal Port number for this service: Enter “137”.
5. Make sure UDP is selected.
6. Click OK.
gMake sure if the new setting is added and is checked, and then click OK.
Network difficulties (Continued)
DifficultiesSuggestions
 
						

							Troubleshooting and routine maintenance
53
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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 that Windows Firewall on the General tab is set to On.
dClick the Exceptions tab.
eClick the Add port... button.
fTo add port 54925, enter the information below:
1. In Name: Enter any description, for example “Brother Scanner”.
2. In Port number: Enter “54925”.
3. Make sure UDP is selected. Then click OK.
gMake sure that the new setting is added and is checked, and then click 
Apply.
hIf you still have trouble with your network connection such as network 
scanning or printing, check File and Printer Sharing box in the Exceptions 
tab and then click Apply.
Your computer cannot find your 
machine.For Windows
® users: The firewall setting on your PC may be rejecting the 
necessary network connection. For details, see the instruction above.
For Macintosh
® users: Re-select your machine in the DeviceSelector application 
located in Macintosh HD/Library/Printers/Brother/Utilities or from the Model 
pop-up menu of ControlCenter2.
Other
DifficultiesSuggestions
The machine will not turn on. Adverse conditions on the power connection (such as lightning or a power surge) 
may have triggered the machine’s internal safety mechanisms.
Turn the machine off and unplug the power cord. Wait for ten minutes, then plug 
in the power cord and turn the machine on.
Network difficulties (Continued)
DifficultiesSuggestions
 
						

							54
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 machine is on a solid level surface.
„Make sure that the toner cartridges are installed properly. (See 
Replacing a toner cartridge on page 101.)
„Shake the toner cartridges gently.
„Make sure that the drum unit is installed properly. (See Replacing the 
drum unit on page 106.)
„Make sure that you use paper that meets our specifications. A rough 
surfaced paper or thick print media can cause the problem. (See 
Acceptable paper and other media on page 12.)
„Clean the laser scanner windows with a soft cloth. (See Cleaning the 
laser scanner windows on page 83.)
„The drum unit may be damaged. Put in a new drum unit. (See 
Replacing the drum unit on page 106.)
Colors are light or unclear on 
the whole page.
 
„Make sure that the recommended paper was used. 
„Change the paper to freshly unpacked paper.
„Make sure that the front cover is closed properly.
„Shake the toner cartridges gently.
„Clean the laser scanner windows with a soft cloth. (See Cleaning the 
laser scanner windows on page 83.)
„Turn off Toner Save. (See Toner save on page 23.)
White streaks or bands down 
the page
 
„Shake the toner cartridges gently.
„Clean the laser scanner windows with a soft cloth. (See Cleaning the 
laser scanner windows on page 83.)
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
 
						

							Troubleshooting and routine maintenance
55
C
Colored streaks or bands down 
the page
 
„One of the toner cartridges may be damaged. Replace the toner 
cartridge that matches the color of the streak or band. (See Replacing 
a toner cartridge on page 101.)
„Clean all four corona wires (one for each color) of the drum unit by 
sliding the green tab. (See Cleaning the corona wires on page 87.)
„Make sure each corona wire’s green tab is at the home position (b).
„The drum unit may be damaged. Put in a new drum unit. (See 
Replacing the drum unit on page 106.)
„The fuser unit may have a smudge mark. Call Brother Customer 
Service at 1-877-BROTHER (1-877-276-8437) (in USA) or 
1
-877-BROTHER (in Canada).
Colored lines across the page
 
„One of the toner cartridges may be damaged. Replace the toner 
cartridge that matches the color of the line. (See Replacing a toner 
cartridge on page 101.)
„The drum unit may be damaged. Put in a new drum unit. (See 
Replacing the drum unit on page 106.)
„Clean all four corona wires (one for each color) of the drum unit by 
sliding the green tab. (See Cleaning the corona wires on page 87.)
„Clean the laser scanner windows with a soft cloth. (See Cleaning the 
laser scanner windows on page 83.)
White spots or hollow print
 
„Make sure that you use paper that meets our specifications. (See 
Acceptable paper and other media on page 12.) 
„Make sure that the recommended paper was used. 
„Choose Thick paper mode in the printer driver or in the machine
’s 
Paper Type menu setting, or use thinner paper than you are currently 
using. (See Paper type on page 21 and Basic tab in the Software 
User’s Guide on the CD-ROM.)
„Change the paper to fresh, unopened paper.
„Check the machine
’s environment. Conditions such as high humidity 
can cause hollow print. (See Choosing a location on page 36.)
„Clean all four corona wires (one for each color) of the drum unit by 
sliding the green tab. (See Cleaning the corona wires on page 87.) If 
the print quality has not improved, put in a new drum unit. (See 
Replacing the drum unit on page 106.)
„Clean the drum unit. (See Cleaning the drum unit on page 90.)
Completely blank or some 
colors are missing.
 
„Make sure that the toner cartridges are installed properly. (See 
Replacing a toner cartridge on page 101.)
„One of the toner cartridges may be damaged. Identify the missing 
color and put in a new toner cartridge for the color with the white line. 
(See Replacing a toner cartridge on page 101.)
„The drum unit may be damaged. Put in a new drum unit. (See 
Replacing the drum unit on page 106.)
Examples of poor print 
qualityRecommendation
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
 
						

							56
Colored or white spots at 
2.95 in. intervals (75 mm)
 aDust, paper powder, glue, and so on may stick to the surface of the 
photosensitive drum (OPC) and cause colored or white spots to 
appear on printed documents.
bMake five copies of a blank, white sheet of paper. (See Making 
multiple copies on page 26.)
cIf you still see the spots down the printed documents at 
2.95 in. (75 mm) intervals after you made five copies, clean the 
drum unit. (See Cleaning the drum unit on page 90.)
dIf the print quality still has not improved you need to install a new 
drum. (See Replacing the drum unit on page 106.)
Toner scatter or toner stain
 
„Check the machine’s environment. Conditions such as high humidity 
and high temperatures may cause this print quality problem. (See 
Choosing a location on page 36.)
„Make sure that you use paper that meets our specifications. Rough-
surfaced paper may cause the problem. (See Acceptable paper and 
other media on page 12.)
„Install a new toner cartridge for the color causing the problem. (See 
Replacing a toner cartridge on page 101.)
„Clean the corona wires and the drum unit for the color causing the 
problem. (See Cleaning the corona wires on page 87 and Cleaning 
the drum unit on page 90.) If the print quality has not improved, put in 
a new drum unit. (See Replacing the drum unit on page 106.)
Gray or colored background
 
„Make sure that you use paper that meets our specifications. (See 
Acceptable paper and other media on page 12.) 
„Check the machine
’s environment. Conditions such as high 
temperatures and high humidity can increase the amount of 
background shading. (See Choosing a location on page 36.)
„Install a new toner cartridge for the color causing the problem. (See 
Replacing a toner cartridge on page 101.)
„Clean the corona wires of the drum unit for the color causing the 
problem. (See Cleaning the corona wires on page 87.) If the print 
quality has not improved, put in a new drum unit. (See Replacing the 
drum unit on page 106.)
Page skewed
 
„Make sure 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.
„The paper tray may be too full.
„Make sure that you use paper that meets our specifications. (See 
Acceptable paper and other media on page 12.)
Examples of poor print 
qualityRecommendation
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
2.95 in. (75 mm)
2.95 in. (75 mm)
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 012345678
9. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 01234567
89. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 012345678
9. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 012345678
9. abcdefghijklmnopqrstuvwxyz.
 
						

							Troubleshooting and routine maintenance
57
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 12.)
„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 12 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. (See 
Replacing the drum unit on page 106.)
The color of your printouts are 
not what you expected.„Make sure that the toner cartridges are installed properly. (See 
Replacing a toner cartridge on page 101.)
„Make sure that none of the toner cartridges have reached the end of 
their life.
„Make sure that the drum unit is installed properly. (See Replacing the 
drum unit on page 106.)
„Make sure that the belt unit is installed properly. (See Replacing the 
belt unit on page 112.)
„Perform the calibration. Press Menu, 3, 5. (See Software User’s 
Guide on the CD-ROM.)
„Adjust the color by using the custom setting in the printer driver. 
Colors the machine can print and colors you see on a monitor are 
different. The machine may not be able to reproduce the colors on 
your monitor.
„Make sure that you use paper that meets our specifications. (See 
Acceptable paper and other media on page 12.) 
„The drum unit may be damaged. Put in a new drum unit. (See 
Replacing the drum unit on page 106.)
„Put in a new belt unit. (See Replacing the belt unit on page 112.)
All one color„Clean the corona wires of the drum unit for the color causing the 
problem. (See Cleaning the corona wires on page 87.) If the print 
quality has not improved, put in a new drum unit. (See Replacing the 
drum unit on page 106.)
„The drum unit may be damaged. Put in a new drum unit. (See 
Replacing the drum unit on page 106.)
Examples of poor print 
qualityRecommendation
 
						

							58
Color misregistration
 
„Make sure that the drum unit is installed properly. (See Replacing the 
drum unit on page 106.)
„Make sure that the belt unit is installed properly. (See Replacing the 
belt unit on page 112.)
„Make sure that the waste toner box is installed properly. (See 
Replacing the waste toner box on page 117.)
„Perform the auto color registration by using the control panel. Press 
Menu, 3, 6, 1.
Or
„Perform the manual color registration by using the control panel.
aPrint the correction chart by using the control panel. Press 
Menu, 3, 7, 1.
bEnter the correction value on the chart. Press Menu, 3, 7, 2.
If the color misregistration is not corrected after registering the color 
manually, take all the toner cartridges out of the drum unit and turn 
the drum unit over, then make sure that four drum unit gears are in 
the home position. The home position of each drum can be identified 
by matching the number on the drum unit gear to the same number 
on the side of the drum unit as shown in the illustration.
 
„The drum unit may be damaged. Put in a new drum unit. (See 
Replacing the drum unit on page 106.)
„Put in a new belt unit. (See Replacing the belt unit on page 112.)
„Put in a new waste toner box. (See Replacing the waste toner box 
on page 117.)
„If solid area of color or images have cyan, magenta or yellow fringes, 
you can use the auto registration feature to correct the problem.
Examples of poor print 
qualityRecommendation
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.