Konica Minolta magicolor 1690MF - Manual (Page 173)

Replacing Consumables 7-10
16
Press the Stop/Reset key to reset the machine and clear the indicator
message.
"
The machine must complete a calibration cycle after a toner car-
tridge has been replaced. If you open the scanner unit or front
cover before the machine is reset, the calibration stops, then starts
over again after the cover is closed.