Brother DCP-J525W Basic User's Manual page 56

Error Message
Unusable Device
Disconnect device from
front connector & turn
machine off & then on
(DCP-J725DW)
Unusable Device
Please Disconnect
USB Device.
(DCP-J725DW)
Wrong Ink Colour
Wrong Paper Size
48
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Cause
A broken device has been connected
to the USB direct interface.
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/.
A colour ink cartridge has been
installed in the Black ink cartridge
position.
The Paper Size setting does not
match the size of paper in the tray. Or,
you did not set the paper guides in the
tray to the indicators for the paper size
you are using.
Action
Unplug the device from the USB direct
interface, then press
machine off and then on again.
Unplug the device from the USB direct
interface. Turn the machine off and
then on again.
Check which ink cartridges are not
matched by colour to their ink
cartridge positions and move them to
their correct positions.
1 Check that the paper size you
choose matches the size of paper
in the tray.
2 Make sure you loaded the paper in
a Portrait position, by setting the
paper guides at the indicators for
your paper size.
3 After you have checked the paper
size and the paper position, press
Mono Start or Colour Start.
to turn the