Sony STR-DG820 - Manual (Page 76)

76 US
Message
appears Explanation Remedies
XM – – The preset number entered is an
invalid number. Enter a number from 1 to 30.
SIG:GOOD The signal strength is good. Adjust the antenna so that the signal is as strong as
possible. For details, see “Aiming the XM antenna
(aerial)” (page 69).
SIG:MARG The signal strength is marginal.
SIG:WEAK The signal strength is weak.
SIG:NONE There is no signal.