PORT WASHINGTON, Wis. (AP) — The actor who played Screech in the 1990s TV show “Saved by the Bell” has pleaded not guilty to charges resulting from a bar fight in southeastern Wisconsin. Dustin Diamond and his fiancée, Amanda Schutz, face on charges stemming from the Christmas Day scuffle at a Port Washington bar. Diamond is accused of stabbing a man after Schutz became involved in an altercation. The stabbed man told police he had shoved Diamond forcefully and didn’t realize he had been cut until later.