Samsung CLX-8540ND - Manual (Page 115)

13 .6
<Maintenance>
Replacing the imaging unit
Expected cartridge life
The useful life of the imaging unit is approximately 30,000 pages. The
screen displays Replace [xxx] Imaging Unit when the imaging unit is
near the end of life. Otherwise your printer stops printing.
Imaging unit yield may be affected by the operating environment,
optional, printing interval, media type and media size.
For ordering information for imaging unit. (Page 15.1)
1 Turn the machine off, then wait a few minutes for the machine to
cool.
2 Open the side cover.
3 Open the front cover.
4 Pull the waste toner container out of the machine using its handle.
5 Turn the imaging unit locking levers outwards to release and open
the inner cover.
6 Pull the used imaging unit out of the machine using the handle on its
bottom.