Brother HL-3400CN Series - Manual (Page 163)

USER’S GUIDE
5-6
Oil Bottle
Oil Bottle Low Message
When the Oil has almost run out, the following message appears on the
LCD panel. Obtain a new Oil Bottle to replace the nearly empty bottle.
After this message appears, you can print approximately 30 pages:
FUSER OIL LOW
Oil Bottle Empty Message
When the Oil completely runs out, the following message appears on the
LCD panel and the printer stops printing. When you see this message,
you must replace the Oil Bottle with a new one:
23 OIL EMPTY
Warning
The Fusing Unit and the parts around it are HOT! Be sure to wait
until the Fusing Unit has cooled sufficiently before replacing the Oil
Bottle.
If you touch the HOT parts, you might get injured.
!
Caution
Be careful not to spill oil inside the printer, it may cause considerable
damage and void your warranty. If you spill some oil, consult your dealer
or Brother authorized service representative.
Replacing the Oil Bottle
1. Press the Power button to turn off the printer and wait until it has
cooled down sufficiently.
2. Open the Top Cover.