Brother MFC640CW Service Manual page 255

Messages on the LCD
Media Error
Near Empty
No Cartridge
No File
No Paper Fed
No Response/Busy
Not Registered
Out of Memory
Paper Jam
Wrong Paper Size
Unable to Change
Unable to Clean
Unable to Init.
Unable to Print
Unable to Scan
The media card is either corrupted, improperly formatted, or
there is a problem with the media card.
One or more of the ink cartridges are running out of ink. If a
sending machine has a color fax, the machine's 'handshake' will
ask that the fax be sent as black and white.
If the sending machine has the ability to convert it, the color fax
will be received into memory as a black and white fax.
An ink cartridge is not installed properly.
The media card in the media drive does not contain a .JPG file.
The machine is out of paper or paper is not properly loaded in
the paper tray.
The paper is jammed in the machine.
The number you dialed does not answer or is busy.
You tried to access a Speed Dial number that is not
programmed.
The machine's memory is full.
Paper is jammed in the machine.
Paper is not the correct size.
The machine has a mechanical problem.
9- 4
Probable Cause
Confidential