If debris is found on the bin contacts, wipe the bin contacts on both the bin and robot with a clean melamine foam. The following are the locations of the bin contacts:
Roomba 800 and 900 AeroForce™ Bin
 
  Bin contacts on the bin.
 
  Bin contacts on the robot.
Roomba 700 AeroVac™ Series 2 Bin
 
  Bin contacts on the AeroVac™ Series 2 Bin.
 
  Bin contacts on the robot.
Roomba 600 AeroVac™ Bin
 
  Bin contacts on the AeroVac™ the bin.
 
  Bin contacts on the robot.