This information applies to Melco OS and Bravo OS version 11.06.073 and higher.
Some Melco EMT16 or Bravo machines may briefly go offline when the Maintenance Notification appears. This will be resolved in a forthcoming software update (anticipated for late 2016).
If this is occurring and interferes with the performance of other Melco machines also attached to that computer, this is a temporary workaround:
Under: Tools - Settings - Timers, you can uncheck the Maintenance Timers Enabled box. You will not be prompted by the Maintenance Notifications, and can manually check on a monthly basis to determine what maintenance is required.