![background image](https://i.printerdoc.net/HP LaserJet 3052 All in One Printer/en/HP LaserJet 3052 All in One Printer_en261.png)
Receive toner warnings from the all-in-one at the all-in-one control panel
(HP LaserJet 3390/3392 all-in-one)
The Toner Low light on the all-in-one control panel lights up when the print cartridge level is low.
Receive toner warnings from the all-in-one at the all-in-one control panel
(HP LaserJet 3390/3392 all-in-one)
The Toner Low light on the all-in-one control panel lights up when the print cartridge level is low.