Xerox WorkCentre 7970-3795 - Manual (Page 188)

Maintenance
4. Hold the new toner cartridge with the arrow facing up, then push the cartridge in slowly until it stops.
5. Push gently on the toner cartridge to ensure that it is seated.
6. Close the printer front cover.
188 Xerox ® WorkCentre ® 7970 Multifunction Printer
User Guide