KORG M3 - Manual (Page 157)

Media utility File copying, deleting, and formatting (Media– Utility)
149
Quick Start
Introduction
Setup
Program
Combination
Sequencer
Sampling
Global
Media
Effect
KARMA
Drum Track
Other
Appendices
5. Press the OK button.
If the calendar backup battery runs low, a message
of “The clock battery voltage is low.” will appear
on the display. If the calendar backup battery runs
down completely, the calendar will be initialized,
and the date and time will not be recorded
correctly.
Note: You can replace the calendar backup battery by
yourself. For details, please see “Specifications and
options” on page 224.