As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LANDING, CABIN INTERIOR LIGHTS WERE TURNED ON. WHEN THE AIRSTAIR DOOR WAS OPENED AND LOCKED IN THE FULL DOWN POSITION ALL THE ENTRY AND CABIN INTERIOR LIGHTS WENT OUT. TROUBLESHOT TO FAULTY GALLEY SWITCH PANEL. R & R SWITCH ASSY IAW MM. SYS OPS CHECKED GOOD.