Brother GT-541 Instruction Manual page 78

6. Maintenance
(1) Pull out the Waste Cartridge Tray.
The message "ERROR NO WASTE INK TRAY" is displayed.
(2) Remove the sticker on the used Waste Ink Cartridge, and use it to seal the hole on it.
(3) Remove the new Waste Ink Cartridge from its package.
<Note>
Save the plastic package for storing the used cartridge.
(4) Remove the used Waste Ink Cartridge from the Waste Cartridge Tray, and put it in the package, in
which the new Waste Ink Cartridge came in.
(5) Install the new Waste Ink Cartridge into the Waste Cartridge Tray. Make sure that two projections of
the Waste Cartridge Tray pierce the two holes of the Waste Ink Cartridge.
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GT-541