As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 3683 ACFT BUS 2 CAUTION MSG POSTED AFTER LANDING & NR 1 ENG SHUT DOWN. THE ACFT WAS REMOVED FROM SERVICE. PERFORMED OPERATIONAL CHECK OF LT & RT GEN INTEGRATED DRIVE UNITS IAW CRJ700 AMM 24-11-01. OPERATIONS CHECKED GOOD. THE ACFT RETURN TO SERVICE.