Solve Problems If you have a problem using your NX300/305 Series, check these sections for guidance in diagnosing and solving the problem: Checking for Software Updates Problem-solving Tools Problems and Solutions Re-installing Software Getting More Help Note:If the display screen only shows the clock, your NX300/305 Series is in sleep mode to save power. This occurs when about 15 minutes elapse without pressing a button. Press any button (except the On button) to wake it up.