Brother DCP-J4120DW Basic User's Manual page 38

Error Message
Ink Low
Low Temperature
Media Error
Media is Full.
No Ink Cartridge
30
Cause
One or more of the ink cartridges are
near the end of their life. If one of the
colour ink cartridges is near the end
of its life.
The room temperature is too low.
The memory card is either corrupted,
incorrectly formatted, or there is a
problem with the memory card.
The memory card or USB flash drive
you are using already contains 999
files.
The memory card or USB flash drive
you are using does not have enough
free space to scan the documents.
An ink cartridge is not installed
correctly.
Action
Order a new ink cartridge. You can
continue printing until the
Touchscreen displays
Cannot Print.
(See Online User's Guide.)
After increasing the room
temperature, allow the machine to
warm up to room temperature. Try
again when the machine has warmed
up.
Remove the memory card from the
media drive (slot) of the machine and
format it correctly.
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 (slot) of the machine
by inserting a working memory card.
Your machine can save to your
memory card or USB flash drive only
if it contains less than 999 files.
Delete unused files and try again.
Press .
Delete unused files from your
memory card or USB flash drive to
make some free space, and then try
again.
Take out the new ink cartridge and
re-install it slowly and firmly until the
cartridge lever lifts.
(See Online User's Guide.)