OMAHA, Neb. (AP) _ A judge on Friday scheduled two separate trials for four music stores charged with selling a sexually explicit 2 Live Crew album to minors.

Two of the stores, owned by Trans World Music of Albany, N.Y., were scheduled for trial July 9, said Judge Stephen M. Swartz. The other two stores, Omaha Pickles Records and Tapes, face trial July 13. All have entered innocent pleas.

Charges of selling obscene materials to a minor were filed in April after City Councilman Steve Exon and the group Omaha for Decency sent four teen- agers, ages 13 to 17, into stores to buy the rap group's ''Sports Weekend'' album.

The misdemeanor charge carries a maximum $1,000 fine and a year in jail.

Richard Dinsmore, who represents the Omaha Pickles stores and co-owners Rodney Ferguson and William Hempel III, said he will ask that charges be dismissed based on a federal appeals court ruling last month in Atlanta that the 2 Live Crew album ''As Nasty As They Wanna Be'' is not obscene. Expert witnesses testified the album had artistic merit.

J. William Gallup, who represents the stores owned by Trans World, said there was no criminal intent when the albums were sold. The corporation has a policy against selling explicit albums to minors, he said.

The Nebraska law prohibits the ''knowing'' sale of obscene materials to minors.

Thirty-five states have similar laws, although no case has gone to court, say representatives of the American Civil Liberties Union and Trans World, which has about 600 stores in 33 states.

Luther Campbell, lead singer of 2 Live Crew, came to Omaha on April 21 to defend the music. He said parents, not the government, should decide what music children listen to.

The album carries a warning: ''Parental Advisory Explicit Lyrics.''