A320 SIGNS CONTROL PANEL

EMER EXIT LT sw

• ON: Turn on overhead emergency lights, EXIT signs, and proximity marking system come on.
• OFF: Turn off overhead emergency lights
• ARM:
  • Emergency lighting and proximity marking turn on if normal aircraft electrical power system fails or DC SHED ESS BUS fails or AC BUS 1 fails.
  • Exit signs come on if normal aircraft electrical power system fails, or DC SHED ESS BUS fails.

EMER EXIT LT

• The amber OFF light comes on when the EMER EXIT LT sw is set to OFF.

SEAT BELTS sw

• ON: Turn on FASTEN SEAT BELT and RETURN TO SEAT signs. Low-tone chime is played in the passenger compartment.
• OFF: Turn signs off and chime sounds.

NO SMOKING sw or EXIT sw NO PED sw

• NO SMOKING sw or EXIT sw activate the EXIT and NO SMOKING signs.
• NO PORTABLE ELEC DEVICE sw activates the EXIT and NO MOBILE signs.
• A low-tone chime sounds each time a sign goes on or off.
• ON: Signs are on in the cabin
• AUTO: Signs are on in the cabin when either landing gear or flaps/slats are extended.
• OFF: Signs are off in the cabin.