Brother Mfc 6890cdw User Manual

							
Troubleshooting and Routine Maintenance165
B
cPull out the jammed paper (1) and press 
Stop/Exit.
 
 
dPush the green duplex unit up. 
eReset the machine by lifting the scanner 
cover from the front of the machine and 
then closing it.
„ If you cannot remove the jammed 
paper from the front of the machine, 
or the error message still appears on 
the LCD after you have removed the 
jammed paper, please go to the next 
step.
fOpen the Outer Back Cover (1) at the 
back of the machine. Pull the jammed 
paper out of the machine.
 
 
 
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gClose the Inner Back Cover (1) if it is 
open as shown in the illustration.
 
hClose the Outer Back Cover.
Make sure the Outer Back Cover is 
closed properly.
 
iUsing both hands, use the plastic tabs 
on both sides of the machine to lift the 
Scanner Cover (1) into the open 
position.
Make sure that there is no jammed 
paper left in the corners of the machine.
 
IMPORTANT
• If the paper is jammed under the print head, unplug the machine from the power 
source, and then move the print head to 
take out the paper.
• If the print head is at the right corner as  shown in the illustration, you cannot move 
the print head. Hold down  Stop/Exit until 
the print head moves to the middle. Then 
unplug the machine from the power 
source, and take out the paper.
 
• If ink gets on your skin or clothing  immediately wash it off with soap or 
detergent.
 
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Troubleshooting and Routine Maintenance167
B
jGently close the scanner cover using 
the finger holds on both sides of it as you 
push down on the Scanner Cover 
Support (1).
 
CAUTION 
Be careful not to trap your fingers under the 
scanner cover.
Always use the finger holds provided on 
both sides of the scanner cover when 
opening and closing it.
 
kPush paper tray #1 and paper tray #2 
firmly back into the machine.
IMPORTANT
Make sure you pull out the paper support 
until it clicks.
 
 
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 to replace 
an ink cartridge, 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.
IMPORTANT
Brother strongly recommends that you do 
not refill the ink cartridges provided with 
your machine. We also strongly 
recommend that you continue to use only 
Genuine Brother Brand replacement ink 
cartridges. Use or attempted use of 
potentially incompatible ink and/or 
cartridges in the Brother machine may 
cause damage to the machine and/or may 
result in unsatisfactory print quality. Our 
warranty coverage does not apply to any 
problem that is caused by the use of 
unauthorized third party ink and/or 
cartridges. To protect your investment and 
obtain premium performance from the 
Brother machine, we strongly recommend 
the use of Genuine Brother Supplies.
 
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aOpen the ink cartridge cover.
If one or more ink cartridges have 
reached the end of their life, for example 
Black, the LCD shows Cannot Print.
bPress down to unlock the release lever 
and take out the ink cartridge for the 
color shown on the LCD.
 
 
cOpen the new ink cartridge bag for the 
color shown on the LCD, and then take 
out the ink cartridge.
dTurn the green knob on the protective 
yellow cap clockwise until it clicks to 
release the vacuum seal, then remove 
the cap (1).
 
 
eEach color has its own correct position. 
Insert the ink cartridge in the direction of 
the arrow on the label.
 
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Troubleshooting and Routine Maintenance169
B
fGently push in the ink cartridge until it 
clicks, and then close the ink cartridge 
cover.
 
gThe machine will automatically reset the 
ink dot counter.
Note
• If you replaced an ink cartridge, for example Black, 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 color. If the ink 
cartridge you installed is not a brand new 
one, be sure to press  No.
• If the LCD shows  No Cartridge or 
Cannot Detect  after you install the ink 
cartridges, check that the ink cartridges 
are installed properly.
 
CAUTION 
If ink gets in your eyes, wash them out with 
water at once and call a doctor if you are 
concerned.
 
IMPORTANT
• 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 gets on your skin or clothing  immediately wash it off with soap or 
detergent.
• If you mix the colors 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.
 
 
						

							
170
Cleaning the outside of the 
machineB
Clean the Touchscreen as follows:
IMPORTANT
• Turn off the power switch when you clean the Touchscreen.
• DO NOT use any type of liquid cleaners  (including ethanol).
 
aClean the Touchscreen with a dry soft 
cloth.
 
Clean the outside of the machine as 
follows:
IMPORTANT
• 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.
 
aPull the paper trays (1) completely out of 
the machine.
 
 
bWipe the outside of the machine with a 
soft cloth to remove dust.
 
cRemove anything that is stuck inside the 
paper tray.
dWipe the paper trays with a soft cloth to 
remove dust.
 
ePut the paper trays firmly back in the 
machine.
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Troubleshooting and Routine Maintenance171
B
Cleaning the scannerB
aLift the document cover (1). Clean the 
scanner glass (2) and the white 
plastic (3) with a soft lint-free cloth 
moistened with a non-flammable glass 
cleaner.
 
bIn the ADF unit, clean the white bar (1) 
and the glass strip (2) with a lint-free 
cloth moistened with a non-flammable 
glass cleaner.
 
Note
In addition to cleaning the scanner glass 
and glass strip with a non-flammable glass 
cleaner, run your finger tip over the glass 
to see if you can feel anything on it. If you 
feel dirt or debris, clean the glass again 
concentrating on that area. You may need 
to repeat the cleaning process three or 
four times. To test, make a copy after each 
cleaning attempt.
 
Cleaning the machine’s 
printer platenB
CAUTION 
Be sure to unplug the machine from the AC 
power outlet before cleaning the printer 
platen (1).
 
aUsing both hands, use the plastic tabs 
on both sides of the machine to lift the 
scanner cover until it locks securely into 
the open position.
bClean the machine’s printer platen (1) 
and the area around it, wiping off any 
scattered ink with a soft, dry, lint-free 
cloth.
 
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Cleaning the paper pick-up 
rollerB
aPull the paper trays completely out of 
the machine.
bUnplug the machine from the AC power 
outlet and open the Outer Back 
Cover (1) and Inner Back Cover (2) at 
the back of the machine.
 
cSlightly moisten a soft, lint-free cloth 
with water. Thoroughly wring the cloth 
before using. 
dClean the paper pick up rollers (1) with 
the cloth, using a side-to-side motion.
Slowly turn the rollers so that the whole 
surface is cleaned.
 
eUse a dry, soft, lint free cloth to dry the 
rollers, using a side-to-side motion.
Slowly turn the rollers so that the whole 
surface is dried.
fClose the Inner Back Cover and the 
Outer Back Cover.
Make sure the Outer Back Cover is 
closed properly.
gPut the paper trays firmly back in the 
machine.
hRe-connect the power cord.
iDo not use the machine again until the 
rollers are dry.
Cleaning the print headB
To maintain good print quality, the machine 
will automatically clean the print head. You 
can start the cleaning process manually if 
there is a print quality problem.
Clean the print head and ink cartridges if you 
get a horizontal line or blank text in the text or 
graphics on your printed pages. You can 
clean Black only, three colors at a time 
(Cyan/Yellow/Magenta), or all four colors at 
once.
Cleaning the print head consumes ink. 
Cleaning too often uses ink unnecessarily.
IMPORTANT
DO NOT touch the print head. Touching 
the print head may cause permanent 
damage and may void the print heads 
warranty.
 
aPress .
bPress Cleaning .
cPress Black , Color  or All .
The machine cleans the print head. 
When cleaning is finished, the machine 
will go back to the Ready screen 
automatically.
Note
If you clean the print head at least five 
times and the print has not improved, try 
installing a new Genuine Brother Brand 
replacement cartridge for each problem 
color. Try cleaning the print head again up 
to five more times. If the print has not 
improved call Brother Customer Service 
(see  Brother numbers  on page i).
 
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Troubleshooting and Routine Maintenance173
B
Checking the print qualityB
If faded or streaked colors and text appear on 
your output, some of the nozzles may be 
clogged. You can check this by printing the 
Print Quality Check Sheet and looking at the 
nozzle check pattern.
aPress .
bPress Test Print .
cPress Print Quality .
dPress Color Start .
The machine begins printing the Print 
Quality Check Sheet.
eCheck the quality of the four color blocks 
on the sheet.
fThe LCD asks you if the print quality is 
OK.
Do one of the following:
„ If all lines are clear and visible, press 
Yes  to finish the Print Quality check 
and go to step j.
„ If you can see missing short lines as 
shown below, press  No.
gThe LCD asks you if the print quality is 
OK for black and three colors.
Press  Yes or No.
hThe LCD asks you if you want to start 
cleaning.
Press  Color Start .
The machine starts cleaning the print 
head.
iAfter cleaning is finished, press 
Color Start .
The machine starts printing the Print 
Quality Check Sheet again and then 
return to step e. 
jPress  Stop/Exit .
If you repeat this procedure at least five 
times and the print quality is still poor, 
replace the ink cartridge for the clogged 
color. 
After replacing the ink cartridge, check 
the print quality. If the problem still 
exists, repeat the cleaning and test print 
procedures at least five times for the 
new ink cartridge. If ink is still missing, 
call Brother Customer Service. (See 
Brother numbers  on page i.)
IMPORTANT
DO NOT touch the print head. Touching 
the print head may cause permanent 
damage and may void the print heads 
warranty.
 
Note
 

OK Poor
   

OK Poor
  
 
i
 
When a print head 
nozzle is clogged 
the printed 
sample looks like 
this.After the print 
head nozzle is 
cleaned, the 
horizontal lines 
are gone.
 
						

							
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Checking the print alignmentB
You may need to adjust the print alignment 
after transporting the machine or if your 
printed text becomes blurred or images 
become faded.
aPress .
bPress Test Print .
cPress Alignment .
dPress Black Start  or Color Start .
The machine starts printing the 
Alignment Check Sheet.
eCheck the 600 dpi and 1200 dpi test 
prints to see if number 5 most closely 
matches number 0. 
fDo one of the following:
„ If the number 5 samples of both the 
600 dpi and 1200 dpi test prints are 
the best matches, press  Yes to finish 
the Alignment Check and go to 
step i.
„ If another test print number is a 
better match for either 600 dpi or 
1200 dpi, press  No to choose it.
gFor 600 dpi, press the number of the test 
print that most closely matches the 
number 0 sample (1-8).
hFor 1200 dpi, press the number of the 
test print that most closely matches the 
number 0 sample (1-8).
iPress  Stop/Exit .
Checking the ink volumeB
Although an ink volume icon appears on the 
LCD, you can use the ink menu to see a large 
graph showing the ink that is left in each 
cartridge.
aPress .
bPress Ink Volume .
The LCD shows the ink volume.
cPress  Stop/Exit .
Note
You can check the ink volume from your 
computer. (See  Printing for Windows
® or 
Printing and Faxing  for Macintosh
® in the 
Software User’s Guide on the CD-ROM.)
 
Machine InformationB
Checking the serial numberB
You can see the machine’s serial number on 
the LCD.
aPress  MENU.
bPress  aor b to display 
Machine Info.
cPress  Machine Info.
dPress Stop/Exit .