In the beginning of "Starship Mine" episode (Star Trek Next Generation 6x18) maintenance crew boards Enterprise-D to install field diverters in key ship's areas. They start with the bridge.
How did they get to the bridge? Are there any other doors, except turbolift and captain's ready room, in the right wall in bridge (looking from screen perspective)?
I watched this scene twice and either I'm blind or they enters bridge from... captain's ready room.