SALEM – A Lynn truck mechanic, facing a mandatory seven years in prison for peddling a little more than two and a half ounces of heroin, will have to come up with $6,000 cash in order to get out of the Middleton Jail pending his trial.Troy Bettencourt, 43, of 204 Washington St., #206, appeared Friday in Salem Superior Court for his arraignment, but instead of returning home on the $1,000 cash bail, he found himself behind bars and will have to come up with an additional $5,000 in order to get out of prison pending trial.Bettencourt pleaded innocent to a charge of trafficking over 28 grams of heroin in connection with his arrest last December.Assistant District Attorney Karen Hopwood urged Judge Timothy Q. Feeley to increase the original bail of $1,000 set in the Lynn District Court to $10,000 cash, saying it was “not sufficient in the matter,” based on the mandatory seven-year punishment Bettencourt is facing, his prior violations of probation and the fear Bettencourt will not be present for trial.She told Feeley the charges arise from a search warrant on Dec. 4 when authorities raided his apartment following several controlled buys made earlier by a confidential informant.Police said they confiscated in excess of 75 grams of heroin along with sifters, $4,000 cash found in a safe and documentation linking Bettencourt to the apartment.Hopwood acknowledged that Bettencourt has never served state prison time, but has served penalties in the House of Corrections in 1985 and his most recent in 2008.Defense attorney David Grimaldi pleaded with Feeley to maintain the same bail amount, pointing out that his client had made every prior court appearance in District Court and was currently present on the matter.He said Bettencourt worked as a truck mechanic, was born in Lowell, graduated from Lowell Vocational High School and lives in Lynn. He has a 2-month-old child and has been with the mother for over three years, citing local roots in the community.Grimaldi insisted that his client could not make more than $1,000 and asked the judge to impose conditions of release to assure his client’s presence.”I can’t impose $1,000 – it is not enough, especially noting his record of defaults,” Feeley explained, adding that the case appears to be a “very strong” case for the commonwealth, as he ordered the bail to be set at $6,000 cash.Bettencourt’s next scheduled court date is July 16 for a pretrial conference.