According to page 191 of the fourth printing of Campaign Operations, Technical Teams are assigned to units to conduct Maintenance Checks. If time is being tracked, these checks are made once per week while in use, and once every four weeks when not, Rugged quirk notwithstanding.
Depending on the unit and whether Extra Time is taken, this requires a certain amount of the Technical Team's daily eight hours of productive work.
Here's my question: is that time subtracted every day the Technical Team is assigned, or only on days when Maintenance Checks are conducted?
Let me give an example, in case this isn't clear: let's say you have a Technical Time assigned to an assault 'Mech being fielded regularly. It requires a Maintenance Check every week, let's say Sunday.
On Sunday, the Technical Team only has 390 minutes available, since 90 minutes are spent on the Maintenance Check. On Monday, will it have 390 minutes or 480 minutes available?