Orange / Amber flashing light on a Dell Poweredge 2450 / 2550

Placed LTO unit in maintenance mode (eject tape and press eject button 3 times in two seconds) and then took the LTO unit out of maintenance mode (with unit empty, press eject and hold for 3 seconds).

The display screen reset and the light became green once more.

I deal with dell servers extensively and have never come across this. (Various ages from new to 12 years old) All seem to be uniform for me across various sites.

Something that might resolve this or at least point out the source of the problem is to use the cabled UID/Status-Indicator that comes with Dell cable management arms. They plug into a small socket on the back.