What was found
RIGHT PACK FAILED DURING CLIMB. APPROXIMATELY 1 MINUTE LATER, THE LAV SMOKE DETECTOR STARTED BEEPING AND THE FLIGHT ATTENDANT REPORTED SMOKE IN THE CABIN. WITH RECIRCS AND GASPERS OFF, THE CABIN SLOWLY CLEARED. REMOVED LEFT AND RIGHT RAM AIR VENTILATION VALVES AND LEFT HEAT EXCHANGER SPRAYER (H2O) DUCT WITH SERVICEABLE UNITS IAW MM 21-26-01 & 21-51-02. OPS CHECK GOOD. VALVE P/N ON LT 120-42193-001, LT P/N OFF 120-21588-001, DUCT P/N ON RT 120-42193-002, RT P/N OFF 120-21588-002.