The remote control for my 990 is not working. This occurred when a red light that looks like a speaker/volume symbol appeared on the right side of the front panel display for the 990. There is nothing in the 990 manual describing what the red light indicates.

Even after I upgraded the firmware for the 990, the red speaker/volume light was still on the front panel display.

Yes, there are batteries in the remote and the remote has power. Any thoughts are much appreciated.

The red symbol over on the right is an indicator that the pre-amp outputs are active (it will disappear when you hold down mute for several seconds, at which point the headphone jack becomes active). I assume you've hit the "TNR" button on the 990's remote.