Brother  HL-4140CN User Manual page 114

Error Message
Small paper
Toner Error
Toner Low
WT Box End Soon
Cause
The paper size specified in the
printer driver is too small for the
machine to deliver it to the
Face-down output tray.
One or more toner cartridges are
not installed correctly.
The toner cartridge is near the
end of its life.
The waste toner box is near the
end of its life.
Action
Open the back cover to let the printed paper
out on the back output tray and then press
Mono Start or Colour Start.
Pull out the drum unit. Take out all the toner
cartridges, and then put them back into the
drum unit.
Buy a new toner cartridge for the colour that
is indicated on the LCD before you get a
Replace Toner message.
Buy a new waste toner box before you get a
Replace WT Box message.
Troubleshooting
B
85