Samsung ML-2151N-XBH - Manual (Page 27)

2.6 S ETTING U P Y OUR P RINTER
7 Close the top cover. Make sure that the cover is securely
closed.
N OTE : When printing text at 5% coverage, you can expect a
toner cartridge life of approximately 8,000 pages (4,000 pages for
the toner cartridge that is shipped with the printer).
Loading Paper
You can load approximately 500 sheets of paper in the tray.
1 Pull the tray out of the printer.