We found follwing LED status for our AP- 3865e on connecting existing connection where AP-3620 is working properly but at same location AP-3865e is not working.
Radio-1 - Green blinking
Radio-2 - Green blinking
Power - Red blinking
LAN - Red & Green blinking Simultaneously
However on connecting this AP-3865e Directly to Switch on the same port the AP- 3865e is being activated.