HP LaserJet 4050 Printer series - Manual (Page 102)

80 Chapter 3: Printer Maintenance
EN
Continue Printing When Toner Is Low
When toner is low, the printer’s control panel displays the TONER
LOW message.
By default the printer will continue to print when the toner is low.
The printer will continue to display
TONER LOW until you replace the
toner cartridge.
If the you want to stop the printer when toner is low, change TONER
LOW from the default of CONTINUE to STOP (see page B-16). When
the toner is low, the printer will stop printing and STOP will be
displayed. To resume printing, press [Go] .