Pull these levers to disable the shields on the power cells.
Follow the combinations on the tooltips that appear when you mouse over the cells at close range.
0-looking symbol means the lever should be facing away from the cells.
L/1 symbol means the lever should be facing towards the cells.
Destroying the cells spawns adds from the passage you came from.
Destroy all four cells to spawn a named and progress the zone.
Barrier that does not come down until you've finished ring event in the Power Cell Room. Leads to King Klak'Anon and the MPC. See Zam for description of how to kill these final bosses.