88W0-032
Checking the Amount Remaining in the Toner Cartridges
How to check the amount remaining in the toner cartridges is described here.
Before printing in a large quantity, check if you need to have new toner cartridges ready.
1
Select <Status Monitor> in the Home screen.
2
Select <Device Information> 
<Cartridge Information>.
<Cartridge Information>.3
Check the toner cartridge level.
The value displayed for the remaining amount in the toner cartridges is approximate and may differ from the actual amount.