On a 600 series receiver it is on the System Status screen, Line F.
Options 4, 7.
You will see a 3 digit number (the number of channels in the map) then a dash followed by a 4 digit number (your map code)
4320 is a 2 satelllite quad LNB.
4323 is a 3 satelllite quad LNB.
4377 is a 2 satellite stacked LNB in the East.
4379 is a 2 satellite stacked LNB in the West.
There are several others some of which may no longer be in use.
There may also be some new ones I'm not aware of.
Thanks for the great info guys! I have another question. Is there a difference between the V-codes on a 75e LNBF and a 60e LNBF? For example would the V-code for the new xKU be 4323 for both the 60e and the 75e?