Yamaha RX-V550 Receiver "clock interrupt received" Questions

...HOW DO I STOP THIS Plug out in main socket Mine did this too. I found that setting the time on the clock fixed the problem. to set the time turn the stereo off then back on. you cant set the clock

Aiwa XR-EM50 It has a clock. NO way to set it. Same for Bas/Treb control. I know there MUST be a method?? Can't find the manual at Sony-Aiwa or on the websites! What idiot designed this!? This was ...