Hi,
I also look for a way to get rid of the "time for calibration" nag screen when I start up the JM-105.
Hi,
I also look for a way to get rid of the "time for calibration" nag screen when I start up the JM-105.

There isn't a user-accessible way to permanently disable it. The only proper way to clear it is to perform the required calibration/service and reset the maintenance counter through the service menu. If it's overdue, the reminder will continue to appear at startup.