The Most Common Dishwasher Problem Is Unclean Dishes
This is a problem you can fix yourself by doing these few simple steps.
And you might find a simple cleaning may solve the problem thus avoiding that expensive service call from the repair man.
The first task would be to clean the spray arm. It has numerous water spray holes that can get plugged by food debris.
While doing this also clean the filter at the bottom.
On The Next Page You'll See A Video Showing How To Clean Out The Bottom Of The Dishwasher