What was found
DURING TAXI IN TO GATE, AFT LAV SMOKE WARNING MSG DISPLAYED WITH REPORT SMOKE FROM FA AND BURNING SMELL IN FLIGHT DECK. EMERGENCY DECLARED AND PROCEEDED WITH EXPEDITED EVACUATION. (FLT#3018) CLOSED FOUND #2 RECIRC FAN RUNNING HOT. REMOVED AND REPLACED #2 RECIRC FAN IAW AMM. PERFORMED OPS TEST OF ACM SYSTEM IAW AMM. RAN ENGINE AND APU BLEED SOURCES FOR AN EXTENDED AMOUNT OF TIME. NO FURTHER SMELLS OR SMOKE NOTED AT THIS TIME.