As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GNDED. ACRID SMELL REPORT IN AFT CABIN ACCOMPANIED BY SMOKE COMING OUT OF LIGHTING FIXTURE. EXACT FIXTURE NOT KNOWN. R & R THE UPPER SIDEWALL BALLAST AT ROW 10 IAW AMM 33-21-03 & ACCOMPLISHED OPERATIONAL CHECK. SYSTEM CHECKED NORMAL.