Brother DCP 750CW User Manual

							Troubleshooting and Routine Maintenance
63
Characters and lines are stacked. Check the printing alignment. (See Checking the printing alignment on page 76.)
Printed text or  images are  skewed. Make sure the paper is loaded properly in the paper tray and the paper side guide 
is adjusted correctly. (See Loading paper and other media on page 16.) 
Make sure the Jam Clear Cover is set properly.
Smudged stain at the top center of 
the printed page.Make sure the paper is not too thick or curled. (See Acceptable paper and other 
media on page 12.) 
Printing appears dirty or ink seems 
to run.Make sure you are using the recommended types of paper. (See Acceptable 
paper and other media on page 12.) Dont handle the paper until the ink is dry.
Stains appear on the reverse side 
or at the bottom of the page.Make sure the printer platen is not dirty with ink. (See Cleaning the machine printer 
platen on page 74.)
Make sure you are using the paper support flap. (See Loading paper and other 
media on page 16.)
The machine prints dense lines on 
the page.Check Reverse Order in the Basic tab of the printer driver.
The printouts are wrinkled. In the printer driver Basic tab, click Settings, and uncheck Bi-Directional 
Printing.
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.
Print speed is too slow.  Try changing the printer driver setting. The highest resolution needs longer data 
processing, sending and printing time. Try the other quality settings in the printer 
driver Basic tab. Also, click the Settings, and make sure you uncheck Colour 
Enhancement.
Set the borderless feature off. Borderless printing is slower than normal printing. 
(See Printing for Windows
® or Printing and Faxing for Macintosh® in the Software 
Users Guide on the CD-ROM.)
Colour Enhancement is not 
working properly.If the image data is not full colour in your application (such as 256 colour), Colour 
Enhancement will not work. Use at least 24 bit colour data with the Colour 
Enhancement feature.
Machine feeds multiple pages. Make sure the paper is loaded properly in the paper tray. (See Loading paper and 
other media on page 16.)
Check that more than two types of paper are not loaded in the paper tray at any 
one time.
Printed pages are not stacked 
neatly.Make sure you are using the paper support flap. (See Loading paper and other 
media on page 16.)
Printed pages double-feed and 
cause a paper jam.Make sure you pull out the paper support until it clicks.
Machine does not print from Paint 
Brush.Try setting the Display setting to ‘256 colours.’
Machine does not print from Adobe 
Illustrator.Try to reduce the print resolution. (See Printing for Windows
® or Printing and 
Faxing for Macintosh® in the Software Users Guide on the CD-ROM.)
Printing (Continued)
DifficultySuggestions
 
						

							64
Copying Difficulties
DifficultySuggestions
Vertical streaks appear on copies. If you see vertical streaks on copies, clean the scanner. (See Cleaning the 
scanner on page 73.)
Poor copy results when using the 
ADF. (DCP-540CN only)Try using the scanner glass. (See Using the scanner glass on page 10.)
Scanning Difficulties
DifficultySuggestions
TWAIN/WIA errors appear while 
scanning.Make sure the Brother TWAIN/WIA driver is chosen as the primary source. In 
PaperPort
® SE with OCR, click File, Scan and choose the Brother TWAIN/WIA 
driver.
Poor scanning results when using 
the ADF.Try using the scanner glass. (See Using the scanner glass on page 10.)
Software Difficulties
DifficultySuggestions
Cannot install software or print. Run the Repair MFL-Pro Suite program on the CD-ROM. This program will repair 
and reinstall the software.
‘Device Busy’  Make sure the machine is not showing an error message on the LCD.
PhotoCapture Center™ Difficulties
DifficultySuggestions
Removable Disk does not work 
properly.1 Have you installed the Windows
® 2000 update? If not, do the following:
1) Unplug the USB cable.
2) Install the Windows
® 2000 update, and see the Quick Setup Guide. After 
the installation the PC will be automatically restarted.
3) Wait about 1 minute after you restart the PC, and then connect the USB 
cable.
2 Take out the memory card and put it back in again.
3 If you have tried ‘Eject’ from within Windows
®, take out the media card before 
you continue.
4 If an error message appears when you try to eject the media card, it means 
the card is being accessed. Wait a while and then try again.
5 If all of the above do not work, turn off your PC and machine, and then turn 
them on again. (You will have to unplug the power cord of the machine to turn 
it off.)
Cannot access Removable Disk 
from Desktop icon. Make sure you have put the media card into the media slot. 
 
						

							Troubleshooting and Routine Maintenance
65
Network Difficulties
DifficultySuggestions
Cannot print over the Network. Make sure that your machine is powered on and is online and in Ready mode. 
Print a Network Configuration list (see Printing Reports on page 9.) and check the 
current Network settings printed in this list. Reconnect the LAN cable to the hub to 
verify that the cabling 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 machine shows LAN Active for 2 seconds.
(If you are using a wireless connection (DCP-750CW only) or are having Network 
problems, see the Network User’s Guide on the CD-ROM for more information.) 
The network scanning feature does 
not work.(For Windows
® users only) The firewall setting on your PC may be rejecting the 
necessary network connection. Follow the instructions below to configure the 
Firewall. If you are using a personal Firewall software, see the User’s Guide for 
your software or contact the software manufacturer.

1Click the Start button, Settings, Control Panel and then Windows Firewall. 
Make sure that Windows Firewall on the Basic tab is set to On.
2Click the Exceptions tab and Add port button.
3 Enter any name, port number (54295 for network scanning), choose UDP and 
click OK.
4 Make sure if the new setting is added and is checked, and then click OK.
For Windows
® XP SP1 user’s, please visit the Brother Solutions Center.
Your computer cannot find your 
machine.
The firewall setting on you PC may be rejecting the necessary network 
connection. For detail, see the instruction above.

Re-select your machine in the DeviceSelector application located in Macintosh 
HD/Library/Printers/Brother/Utilities or from the model of ControlCenter2.
 
						

							66
Error messagesB
As with any sophisticated office product, errors may occur. If this happens, your machine identifies 
the error and shows an error message. The most common error messages are shown below.
You can correct most errors by yourself. If you need more help, the Brother Solutions Center offers 
the latest FAQs and troubleshooting tips.
Visit us at http://solutions.brother.com.
Error MessageCauseAction
Cover is OpenThe scanner cover is not closed 
completely.Lift the scanner cover and then close it 
again.
The ink cartridge cover is not 
completely closed.Firmly close the ink cartridge cover until it 
clicks.
Data RemainingPrint data is left in the machines 
memory.Re-start printing from your computer.
Print data is left in the machines 
memory. The USB cable was 
unplugged while the computer 
was sending the data to the 
machine.Press Stop/Exit. The machine will cancel 
the job and clear it from the memory. Try to 
print again.
Document JamThe document was not inserted 
or fed properly, or the document 
scanned from the ADF was too 
long.See Using the ADF (DCP-540CN only) 
on page 10.
See Document jam (DCP-540CN only) 
on page 68.
High TemperatureThe print head is too warm. Allow the machine to cool down.
Ink EmptyOne or more of the ink cartridges 
is empty. The machine will stop 
all print operations.Replace the ink cartridges. (See Replacing 
the ink cartridges on page 70.)
Low TemperatureThe print head is too cold. Allow the machine to warm up.
Media ErrorThe media card is either 
corrupted, improperly formatted, 
or there is a problem with the 
media card.Put the card firmly into the slot again to 
make sure it is in the correct position. If the 
error remains, check the media drive by 
putting in another media card that you 
know is working.
Near EmptyOne or more of the ink cartridges 
are running out of ink. Order a new ink cartridge. 
No CartridgeAn ink cartridge is not installed 
properly.Take out the ink cartridge and put it in 
again seating it properly. (See Replacing 
the ink cartridges on page 70.)
No FileThe media card in the media 
drive does not contain a .JPG 
file.Put the correct media card into the slot 
again.
 
						

							Troubleshooting and Routine Maintenance
67
No Paper FedThe machine is out of paper or 
paper is not properly loaded in 
the paper tray.Do one of the following:
„Refill the paper in the paper tray, and 
then press Mono Start or Colour 
Start.
„Remove the paper and load it again 
and then press Mono Start or Colour 
Start.
The paper is jammed in the 
machine.See Printer jam or paper jam on page 69.
Out of MemoryThe machines memory is full.Copy operation in progress
Press Stop/Exit and wait until the other 
operations in progress finish and then try 
again.
Printing operation in progress
Reduce print resolution. (For details, see 
Printing for Windows
® or Printing and 
Faxing for Macintosh® in the Software 
Users Guide on the CD-ROM.)
Paper JamPaper is jammed in the machine. (See Printer jam or paper jam on page 69.)
Unable to Change XX
Unable to Clean XX
Unable to Init.XX
Unable to Print XX
Unable to Scan XXThe machine has a mechanical 
problem.Disconnect the machine from the power for 
several minutes, then reconnect it.
Wrong Paper SizePaper is not the correct size. Load the correct size of paper (Letter, 
Legal or A4), and then press Mono Start 
or Colour Start.
Wrong USB deviceA non-PictBridge compatible or 
broken device has been 
connected to the PictBridge port.Unplug the device from the PictBridge port, 
then press On/Off to turn the machine off 
and then on again.
Error MessageCauseAction
 
						

							68
Changing LCD languageB
You can change the LCD language.
aPress Menu
bPress a or b to select 
Initial Setup.
Press OK.
cPress a or b to select 
Local Language.
Press OK.
dPress a or b to select your language.
Press OK.
ePress Stop/Exit.
Document jam (DCP-540CN 
only)B
Documents can jam if they are not inserted or 
fed properly, or if they are too long. Follow the 
steps below to clear a document jam.
Document is jammed in the top of the 
ADF unit
B
aTake out any paper from the ADF that is 
not jammed.
bOpen the ADF cover.
cPull the jammed document out to the 
right or left.
 
dClose the ADF cover.
ePress Stop/Exit.
Note
To avoid future document jams close the 
ADF cover properly by pushing it gently in 
the middle.
 
Document is jammed inside the ADF 
unit
B
aTake out any paper from the ADF that is 
not jammed.
bLift the document cover.
cPull the jammed document out to the 
left.
 
dClose the document cover.
ePress Stop/Exit.
 
						

							Troubleshooting and Routine Maintenance
69
Printer jam or paper jamB
Take out the jammed paper depending on 
where it is jammed in the machine. Open and 
close the scanner cover to clear the error.
aPull the paper tray (1) out of the 
machine.
 
bPull out the jammed paper (1). 
„If you cannot remove the jammed 
paper from the front, or the error 
message still appears on the LCD 
after you have removed the jammed 
paper, please go to the next step.
cRemove the Jam Clear Cover (1). Pull 
the jammed paper out of the machine.
  
dPut the Jam Clear Cover back on.
Make sure the cover is set properly.
 
eLift the scanner cover (1) from the front 
side of the machine until it locks 
securely into the open position.
Make sure that there is no jammed 
paper left inside the machine. Check 
both ends of the print carriage.
 
Note
If the paper is jammed under the print 
head, unplug the machine from the power 
source, then move the print head to take 
out the paper.
 
1
1
1
1
 
						

							70
fLift the scanner cover to release the lock 
(1). Gently push the scanner cover 
support down (2) and close the scanner 
cover (3).
 
gPush the paper tray firmly back into the 
machine. While holding the paper tray in 
place, pull out the paper support (1) until 
it clicks and unfold the paper support 
flap (2).
 
Routine maintenanceB
Replacing the ink cartridgesB
Your machine is equipped with an ink dot 
counter. The ink dot counter automatically 
monitors the level of ink in each of the 4 
cartridges. When the machine detects an ink 
cartridge is running out of ink, the machine 
will tell you with a message on the LCD.
The LCD will tell you which ink cartridge is low 
or needs replacing. Be sure to follow the LCD 
prompts to replace the ink cartridges in the 
correct order.
Even though the machine tells you that an ink 
cartridge is empty, there will be a small 
amount of ink left in the ink cartridge. It is 
necessary to keep some ink in the ink 
cartridge to prevent air from drying out and 
damaging the print head assembly.
aOpen the ink cartridge cover.
If one or more ink cartridges are empty, 
for example Black, the LCD shows 
Ink Empty Black.
bPull the lock release lever down and 
take out the ink cartridge for the colour 
shown on the LCD.
 
 
						

							Troubleshooting and Routine Maintenance
71
 
cOpen the new ink cartridge bag for the 
colour shown on the LCD, and then take 
out the ink cartridge.
dRemove the protective yellow cap (1). 
Improper Setup 
DO NOT touch the area shown in the 
illustration below.
 
 
Note
If the protective yellow caps come off 
when you open the bag, the cartridge will 
not be damaged.
 
eEach colour has its own correct position. 
Insert the ink cartridge in the direction of 
the arrow on the label.
 
fLift the lock release lever and push it 
until it clicks, and then close the ink 
cartridge cover.
 
gIf you replaced an ink cartridge the LCD 
may ask you to verify that it was a brand 
new one. (For example, 
Did you change Black) For each 
new cartridge you installed, press + 
(Yes) to automatically reset the ink dot 
counter for that colour. If the ink 
cartridge you installed is not a brand 
new one, be sure to press - (No).
If you wait until the LCD shows 
Near Empty and Ink Empty, the 
machine will automatically reset the ink 
dot counter.
Note
If the LCD shows No cartridge after 
you install the ink cartridges, check that 
the ink cartridges are installed properly.
 
1
MbrotherXXXX
 
						

							72
WARNING 
If ink gets in your eyes, wash them out with 
water at once and call a doctor if you are 
concerned.
 
CAUTION 
DO NOT take out ink cartridges if you do 
not need to replace them. If you do so, it 
may reduce the ink quantity and the 
machine will not know the quantity of ink left 
in the cartridge.
  
DO NOT touch the cartridge insertion slots. 
If you do so, the ink may stain your skin.
  
If ink stains your skin or clothing, wash with 
soap or detergent at once. 
  
If you mix the colours by installing an ink 
cartridge in the wrong position, clean the 
print head several times after correcting the 
cartridge installation.
  
Once you open an ink cartridge, install it in 
the machine and use it up within six months 
of installation. Use unopened ink cartridges 
by the expiration date written on the 
cartridge package.
  
DO NOT dismantle or tamper with the ink 
cartridge, this can cause the ink to leak out 
of the cartridge.
 
 
Brother multifunction machines are 
designed to work with ink of a particular 
specification and will work to a level of 
optimum performance when used with 
genuine Brother Branded ink cartridges. 
Brother cannot guarantee this optimum 
performance if ink or ink cartridges of other 
specifications are used. Brother does not 
therefore recommend the use of cartridges 
other than genuine Brother Branded 
cartridges or the refilling of empty 
cartridges with this machine or the refilling 
of empty cartridges with ink from other 
sources. If damage is caused to the print 
head or other parts of this machine as a 
result of using incompatible products with 
this machine, any repairs required as a 
result may not be covered by the warranty.
 
Cleaning the outside of the 
machineB
CAUTION 
Use neutral detergents. Cleaning with 
volatile liquids such as thinner or benzine 
will damage the outside surface of the 
machine.
  
DO NOT use cleaning materials that 
contain ammonia.
  
DO NOT use isopropyl alcohol to remove 
dirt from the control panel. It may crack the 
panel.