Brother Mfc 790cw User Manual

							
Troubleshooting and Routine Maintenance155
B
No Paper FedThe machine is out of paper or 
paper is not properly loaded in the 
paper tray, or the Jam Clear 
Cover is not closed properly. Do one of the following:
„ Refill the paper in the paper tray, and 
then press  Black Start  or Color Start .
„ Remove the paper and load it again 
and then press  Black Start or 
Color Start . (See Loading paper and 
other print media  on page 10.) Close 
the Jam Clear Cover properly.
The paper is jammed in the 
machine. Remove the jammed paper by following 
the steps in 
Printer jam or paper jam  
on page 159.
The Jam Clear Cover is not 
closed properly. Check the Jam Clear Cover is closed 
evenly at both ends. (See 
Printer jam or 
paper jam  on page 159.)
No Response/Busy The number you dialed does not 
answer or is busy. Verify the number and try again.
Not Registered You tried to access a Speed Dial 
number that is not programmed. Set up the Speed Dial number. (See 
Storing Speed Dial numbers
 on page 77.)
Out of Memory The machines memory is full. Fax sending or copy operation in 
progress
Do one of the following:
„ Press  Stop/Exit  and wait until the other 
operations in progress finish and then 
try again.
„ Clear the data in the memory. To gain 
extra memory, you can turn off Memory 
Receive. (See  Turning off Memory 
Receive Operations  on page 53.)
„ Print the faxes that are in the memory. 
(See  Printing a fax from the memory  
on page 58.)
The memory card or USB flash 
memory drive you are using does 
not have enough free space to 
scan the document. Delete unused files from your memory card 
or USB Flash memory drive to make some 
free space and then try again.
Paper Jam Paper is jammed into the 
machine. Open the Jam Clear Cover (at the back of 
the machine) and pull out the jammed 
paper by following steps in 
Printer jam or 
paper jam  on page 159.
Touchscreen 
initialization 
failed The Touchscreen was pressed 
before the power on initialization 
was completed. Unplug the machine from the power source 
or turn the machine off. Make sure that 
nothing is touching or resting on the 
Touchscreen. Plug the machine back into 
the power source or switch the machine 
on. Wait until the 
MENU button appears 
before attempting to use the Touchscreen.
Error MessageCauseAction
 
						

							
156
Error animationB
Error animation displays step-by-step 
instructions when paper gets jammed. You 
can read the steps at your own pace by 
pressing c to see the next step and  d to go 
backward. If you do not press a key after 1 
minute the animation starts running 
automatically again.
Note
You can press  d or  c to pause the auto-
animation and go back to step-by-step 
mode.
 
Transferring your faxes or 
Fax Journal reportB
If the LCD shows:
„ Unable to Clean  XX
„ Unable to Init.  XX
„ Unable to Print  XX
„ Unable to Scan  XX
„ Unable to use Phone  XX
We recommend transferring your faxes to 
another fax machine or to your PC. (See 
Transferring faxes to another fax machine  
on page 157 or  Transferring faxes to your PC  
on page 157.)
Unable to Clean  XX
Unable to Init.  XX
Unable to Print XX
Unable to Scan XX
Unable to use Phone XX
(If the LCD shows error 
number  46, see the error 
message  Unable to 
Clean 46  in this table.) The machine has a mechanical 
problem.
—OR—
A foreign object such as a clip or 
ripped paper is in the machine.
Open the scanner cover and look inside 
the machine for foreign objects and paper 
scraps. If the error message continues, 
disconnect the machine from the power for 
several minutes, then reconnect it. (The 
machine can be turned off for 
approximately 24 hours without losing 
faxes stored in the memory. See 
Transferring your faxes or Fax Journal 
report
 on page 156.)
Unable to Clean  46
Unable to Init.  46
Unable to Print  46 The Ink absorber box or Flushing 
box is full of ink.
The Ink absorber box or Flushing box 
needs to be replaced. Call Brother 
Customer Service. (See 
Brother numbers 
on page i.)
Unsupported file typeThe file you sent has an 
unsupported file extension for 
printing with  Bluetooth
® wireless 
technology. Send a suppported file type, with a JPG or 
VNT extension.
Unusable Device
Disconnect device
from front 
connector & turn 
machine off & then 
on A broken device has been 
connected to the USB direct 
interface.
Unplug the device from the USB direct 
interface, then press 
On/Off to turn the 
machine off and then on again.
Unusable Device
Please Disconnect
USB Device. A USB device or USB Flash 
memory drive that is not 
supported has been connected to 
the USB direct interface.
For more information, visit us at 
http://solutions.brother.com.  Unplug the device from the USB direct 
interface.
Wrong Paper Size Paper is not the correct size. Check that the machines Paper Size 
setting matches the size of paper in the 
tray. (See Paper Size  on page 26)
Error MessageCauseAction
 
						

							
Troubleshooting and Routine Maintenance157
B
You can also transfer the Fax Journal report 
to see if there are any faxes you need to 
transfer. (See Transferring Fax Journal report 
to another fax machine  on page 157.)
Note
If there is an error message on the 
machines LCD, after the faxes have been 
transferred, disconnect the machine from 
the power source for several minutes, and 
then reconnect it.
 
Transferring faxes to another fax 
machine
B
If you have not set up your Station ID, you 
cannot enter fax transfer mode. (See Setting 
your station ID in the Quick Setup Guide.)
aPress Stop/Exit  to interrupt the error 
temporarily.
bPress  MENU.
cPress  aor b to display  Service.
dPress Service .
ePress Data Transfer .
fPress Fax Transfer .
gDo one of the following:
„ If the LCD shows  No Data, there 
are no faxes left in the machines 
memory.
Press  Stop/Exit .
„ Enter the fax number to which faxes 
will be forwarded. 
hPress  Black Start .
Transferring faxes to your PC B
You can transfer the faxes from your 
machines memory to your PC. 
aPress Stop/Exit  to interrupt the error 
temporarily.
bMake sure you have installed  MFL-Pro 
Suite  on your PC, and then turn on  PC 
FAX Receiving  on the PC. (For details 
see  PC- FAX receiving  for Windows
® in 
the Software User’s Guide on the 
CD-ROM.)
cMake sure you have set PC Fax 
Receive on the machine. (See  PC Fax 
Receive  on page 52.)
If faxes are in the machine’s memory 
when you set up PC Fax Receive, the 
LCD will ask if you want to transfer the 
faxes to your PC.
dDo one of the following:
„ To transfer all faxes to your PC, 
press  Yes. You will be asked if you 
want to also turn on backup print.
„ To exit and leave the faxes in the 
memory, press  No.
ePress  Stop/Exit .
Transferring Fax Journal report to 
another fax machine
B
If you have not set up your Station ID, you 
cannot enter fax transfer mode. (See Set your 
station ID in the Quick Setup Guide.)
aPress Stop/Exit  to interrupt the error 
temporarily.
bPress  MENU.
cPress  aor b to display  Service.
dPress Service .
ePress Data Transfer .
fPress Report Trans.
 
						

							
158
gEnter the fax number to which the Fax 
Journal report will be forwarded.
hPress Black Start .
Document jamB
Documents can jam in the ADF unit 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 up and to the 
left.
 
dClose the ADF cover.
ePress Stop/Exit .
Note
To avoid future document jams close the 
ADF cover properly by pressing it down  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 Maintenance159
B
Printer jam or paper jamB
Take out the jammed paper depending on 
where it is jammed in the machine.
aPull the paper tray (1) out of the 
machine.
 
bPull out the jammed paper (1) and press 
Stop/Exit.
 
cReset 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.
dOpen the Jam Clear Cover (1) at the 
back of the machine. Pull the jammed 
paper out of the machine.
 
 
eClose the Jam Clear Cover.
Make sure the cover is closed properly.
 
1
1
1
 
						

							
160
fLift 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. 
 
Note
• 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 has stopped in the right  corner as shown in the illustration, you 
cannot move the print head. Press 
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 onto your skin, immediately  wash it off with soap or detergent.
 
gLift the scanner cover to release the 
lock (1). Gently push the scanner cover 
support down (2) and close the scanner 
cover (3) using both hands.
 
hPush the paper tray firmly back into the 
machine.
Note
Make sure you pull out the paper support 
until it clicks.
 
 
1
1
23
 
						

							
Troubleshooting and Routine Maintenance161
B
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.
CAUTION 
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.
 
aOpen the ink cartridge cover.
If one or more ink cartridges have 
reached the end of their life, for example 
Black, the LCD shows 
B&W Print Only or 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.
 
						

							
162
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.
 
fGently push the ink cartridge in 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, 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.
 
WARNING 
If ink gets in your eyes, wash them out with 
water at once and call a doctor if you are 
concerned.
 
1
 
						

							
Troubleshooting and Routine Maintenance163
B
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 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.
 
Cleaning the outside of the 
machineB
Clean the Touchscreen as follows:
CAUTION 
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:
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.
 
 
						

							
164
aPull the paper tray (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 tray with a soft cloth to 
remove dust.
 
ePut the paper tray firmly back in the 
machine.
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.
 
1
2
1
3
1
2