Konica Minolta Magicolor 2430DL - Manual (Page 79)

Replacing Consumables 71
10
Close the front cover.
11
Carefully close the top cover.
"
The printer must complete a calibration cycle (less than 2 minutes)
after the toner cartridge has been replaced. If you open the top
cover before the message
READY appears, the printer stops and
repeats the calibration cycle.