Off air appears on display
The selected channel is not in service. The antenna cable is damaged
Try another channel and check the antenna for a pinched cable

No song title or artist name is displayed.
This information may not be available for some music channels , news channels or when there is no song playiing
This condition is normal , there is nothing wrong with your receiver

You cannot receive any XM channels
Your XM receiver is not activated . Contact XM

No signal appears on display
The XM signal is blocked. This message may appear when driving inside a tunnel or under obstacles.
Check the XM antenna connection, make sure the antenna has a clear view to the sky

CHK antenna appears in the display.
The XM antenna is not connected
Check the XM antenna connection, make sure the antenna has a clear view to the sky

With the XMD1000 tuner module being discontinued, are there any other adapters available?
Yes, The CNP2000UC tuner module and CNPJEN1 adapter cable will work but will need to be programmed
When programming the CNP2000UC select the CD3720XM from the menu of radios