As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DC GENERATION AND CONTROL: WHEN BATTERY POWER TURNED ON THERE IS SMOKE COMING FROM TOP OF ENTRANCE STAIRS WHERE THE EMERGENCY EGRESS LIGHTS ARE WHERE THE CARPET HAS VELCRO ONTO THE SIDE WHERE YOU STEP DOWN INTO THE PLANE. FOWL ELECTICAL BURN SMELL. R&R THRESHOLD LIGHT. ALL WORK DONE IAW 560XL MM# 33-20-04. OPS CHECK GOOD.