Samsung MSYS SF-6900 - Manual (Page 95)

3.14 Maintenance
Managing toner cartridge
Expected cartridge life
The life of your toner cartridge depends on the amount of toner used in
each print job. For instance, when you print a typical business letter with
about 5% page coverage, you can expect a toner cartridge life of
approximately 6,000 pages. The actual number may vary according to the
print density of the page you print. If you print a lot of graphics, you may
need to change the cartridge more often.
You can extend the life of your print cartridge by using the econo mode
setting. Econo mode uses less toner than normal printing. The printed
image is much lighter, and is adequate for printing drafts or proofs.
Replacing toner cartridge
When the toner cartridge is near the end of its life, white streaks or hue
changes will occur. You can temporarily re-establish print quality by
redistributing the remaining toner in the cartridge.
1. Open the cover and remove the toner cartridge.
2. Gently shake the cartridge to distribute the toner evenly inside the
cartridge.
3. Reinstall the cartridge and close the cover.
This is typically successful only one time. When the toner eventually runs
out, white pages will be printed when a print job is sent, or when a fax is
received. The print cartridge needs to be replaced. See the following page.