The status light function depends on teh firmware version 12.0 is an iDX version, which the status light is only lit during boot and in some special encrypted uplink cases, or at least this is what I've gathered. In normal instances, it should be out in this firmware version, that I am sure.
7.0.2 is an iDS version and a green status light is normal. Lat-Lon not available means it is not getting Geo. Location. On a stationary dish, this should be in the options file. On a mobile unit it is usually fed from the controllers GPS. It sounds like it's set as a mobile unit since I think, under 7.x firmware, stationary remotes will have the Tx light blink occasionally.
If you can Telnet in ('telnet 0' or 'telnet 0.0.0.0' from putty, username: admin, probably the same passwords as PuTTY), I'm not sure how from the shell, you can set the coordinates manually. The syntax is 'latlong lat N/S lon E/W' so for example in Houston Tx:
latlong 29.763 N 95.383 W