We replaced the Magenta toner cartridge and the printer goes through both initialization and calibration. Before i replaced the cartridge the yellow toner cartridge had about 2-3 pages of toner. When the printer completed it’s process the yellow cartridge shows empty.
Does calibrating use toner?
The HP Laserjet and color laserjet printer uses toner for more than just printing. On some occasions the printer will use the toner as a lubricant. Here is a document that explains the different ways the printer uses the toner within the printer. The document will also explain different ways the process will affect page counts.