I cannot get the screen up. I have turned the unit RX-V463 on and to TV Viewing with the DTV/Cable on. I have set the subwoofer to less than half. Turned on the TV/Monitor and cable box. Plugged in the YPAO mic. The reveiver reads ENTER TO START and I press enter and nothing happens. What am I doing wrong. Does Yamaha have a customer help number to call to walk me through this process? Can anyone help me?