CBS Records will shift a plant to CD production.

The company said it will halt production of conventional records at its Pitman, N.J., plant by the end of the year and start manufacturing compact audio disks there by 1988. The company, a division of New York-based CBS Inc., said it plans to consolidate all of its 12-inch and 7-inch record production at its Carrollton, Ga., plant. The company said it hopes to produce up to 20 million compact disks a year after its operation is fully on line in Pitman by 1990. About 300 people will be employed there, CBS Records said.