the command to use is ap-leds.
(aruba-7010) #ap-leds ?
all Control LEDs on all APs
ap-group Control LEDs on APs in this group
ap-name Control LEDs on AP with this name
ip-addr Control LEDs on AP at this IP address
wired-mac Control LEDs on AP at this MAC address
ap-leds ap-name <NameofAP> blink
ap-leds ap-name <NameofAP> normal