Thanks for the reply gonk.

I did press the TNR button to operate the 990, with no success. I did turn the front panel power on and then tried the remote and still nothing. In the section that pertains to the battery installation, the manual indicates the LED light will flash if the batteries are installed properly. Also, the manual indicates the backlight feature will turn on when any button is pressed on the remote. Neither the LED light nor the remote's backlight feature work even after checking and double checking the proper battery installation, and after installing brand new batteries.