Start the slope calibration and follow the step by step procedure:
1. Measure the paper white of the reference chart. If this has been just before then skip it.
2. Type in the reference density data, the values the instrument should read, for black, cyan, magenta and yellow. The values are taken from the reference chart or from the readings of a 3rd party instrument.
3. Measure the reference for black, cyan, magenta and yellow and press continue.
4. Review the settings and submit them with the green button.