C series dimmer function

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Squamish VFR,

The UniController hardware and its processing software are common to all models of c/e-Series MFDs. When the Shortcuts menu is displayed, clockwise rotation of the UniController should result in smooth, graduated increases to the MFD's backlighting.
Similarly, when the Shortcuts menu is displayed, counter clockwise rotation of the UniController should result in smooth, graduated decreases to the MFD's backlighting. Should your MFD not be responding in the manner described above, then it would be recommended that the MFD be sent to Raymarine’s Product Repair Center to be bench checked / serviced.