3-4. Battery Check Procedures - Continued
AGU Battery. Check the AGU battery as follows:
Unscrew the charger receptacle cover on the side of the AGU.
Insert the charger plug into the receptacle, making sure the keyed
positions of tile plug are aligned properly.
Set tile voltage selector to 115 or 230, depending upon available line
Plug the charger plug into electrical outlet.
Set the charger ON/OFF switch to ON.
Observe that the BATTERY A and BATTERY B CHARGE
COMPLETE LEDs are lit.
Observe that the BATTERY A and BATTERY B BATTERY
FAILURE LEDs are extinguished.