Brother MFC 9450CDN User Manual

Troubleshooting and routine maintenance
121
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Toner scatter or toner stain on 
the edge of duplex pages
 
CAUTION 
We recommend that you place the drum unit and toner cartridges on a 
clean, flat surface with a piece of disposable paper underneath them in 
case you accidentally spill or scatter toner.
  DO NOT touch the surface of the photosensitive drum.
 
Take all the toner cartridges out of the drum unit and turn the drum 
unit over. Wipe the toner on the edge of drum unit with a dry lint free 
soft...

122
Setting dial tone detectionC
When you send a fax automatically, by 
default your machine will wait for a fixed 
amount of time before it starts to dial the 
number. By changing the Dial Tone setting to 
Detection you can make your machine dial 
as soon as it detects a dial tone. This setting 
can save a small amount of time when 
sending a fax to many different numbers. If 
you change the setting and start having 
problems with dialling you should change 
back to the default No Detection setting....

Troubleshooting and routine maintenance
123
C
Error and maintenance messagesC
As with any sophisticated office product, error and maintenance messages may be displayed. The 
most common error and maintenance messages are shown below.
Error MessageCauseAction
Access ErrorThe device is removed from the 
USB direct interface while the 
data is processing.Press Stop/Exit. Reinsert the device and try to 
print with direct print or PictBridge.
BT Call Sign On
(U.K. only)BT Call Sign is set to On. You 
cannot...

124
Comm.ErrorPoor telephone line quality 
caused a communication error.Try sending the fax again or try connecting the 
machine to another telephone line. If the 
problem continues, call the telephone company 
and ask them to check your telephone line.
Connection FailYou tried to poll a fax machine 
that is not in Polled Waiting mode.Check the other fax machine’s polling setup.
Cooling Down
Wait for a whileThe temperature of the drum unit 
or toner cartridge is too hot. The 
machine will pause its...

Troubleshooting and routine maintenance
125
C
Fuser ErrorThe temperature of fuser unit 
does not rise at a specified 
temperature within specified time.Turn the power switch off, wait a few seconds, 
and then turn it on again. Leave the machine for 
15 minutes with the power on. The machine can 
be turned off for up to 4 days without losing faxes 
stored in the memory. (See Checking if the 
machine has faxes in its memoryon page 128.) The fuser unit is too hot.
Fuser Unit EndIt is time to replace the...

126
Not RegisteredYou tried to access a One-Touch 
or Speed Dial number that is not 
programmed.Set up the One-Touch or Speed Dial number.
(See Storing one-touch dial numberson 
page 53 and Storing speed-dial numberson 
page 54.)
Out of MemoryThe machine’s memory is full.Fax sending or copy operation in progress
Do one of the following:
„Press Mono Start or Colour Start to send 
or copy the scanned pages.
„Press Stop/Exit and wait until the other 
operations in progress finish, and then try 
again....

Troubleshooting and routine maintenance
127
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Rename the FileThere is already a file on the USB 
flash memory drive with the same 
name as the file you are trying to 
save.Change the file name of the file on the USB flash 
memory drive or the file you are trying to save.
Scan Unable XXThe machine has a mechanical 
problem.Turn off the machines power switch and then 
turn it on again. If the error message continues 
leave the machine for several minutes before 
you try it again. The machine can be turned...

128
Checking if the machine has 
faxes in its memoryC
If the LCD shows an error message then you 
can check to see if there are faxes in the 
machine’s memory.
aPress Menu, 9, 0, 1.
bDo one of the following:
„If the LCD shows No Data, there 
are no faxes left in the machine’s 
memory.
Press Stop/Exit.
„If the LCD shows Enter Fax No., 
there are faxes in the machine’s 
memory.
• You can send the faxes to 
another fax machine. (See 
Transferring faxes to another fax 
machineon page 128.)
• You can send the...

Troubleshooting and routine maintenance
129
C
Note
If there is an error message on the 
machine’s LCD after the faxes have been 
sent, disconnect the machine from the 
power source for several minutes, and 
then reconnect it.
If you choose Backup Print On, the 
machine will also print the fax at your 
machine so you will have a copy. This is a 
safety feature in case there is a power 
failure before the fax is forwarded or a 
problem at the receiving machine. The 
machine can store faxes up to 4 days if...

130
Paper jamsC
To clear paper jams, please follow the steps 
in this section.
HOT SURFACE 
After you have just used the machine, some 
internal parts of the machine will be 
extremely hot. When you open the front or 
back cover of the machine, DO NOT touch 
the shaded parts shown in the illustration.
 
 
Note
The LCD names for the paper trays are as 
follows:
• Standard paper tray: Tray 1
• Optional lower tray: Tray 2
• Multi-purpose tray: MP Tray
 
Paper is jammed in the MP trayC
If the LCD shows Jam...