What was found
NR 1 A/C PACK HAD A DIRTY SOCK ODOR IN CABIN. REPORTED STRONGEST BY FA 3 IN REAR OF CABIN, SOME ODOR IN COCKPIT AS WELL, DURING CLIMBOUT. SUBSIDED DURING CRUISE . APU OFF, A/C PACK FLOW HIGH, NR 1 ENGINE 1:15 DURING TAXI PRIOR TO TAKE OFF , TURNING THE NR 1 A/C PACK OFF RESOLVED ODOR FOR DURATION OF FLIGHT. ON SHUTDOWN REINTRODUCING THE NR 1 A/C PACK, RESULTED IN ODOR REOCURING. LEAK CHECKED THE LT & RT CONDENSORS WATER EXTRACTORS, AND OZONE FILTERS IAW AMM 21-52-16. LEAK CHECKED OK, OPS CHECKED OK. NO ODOR NOTED. R & R THE LT CONDENSER IAW AMM 21-52-32, R & R THE LT OZONE FILTER IAW AMM 21-51-41, R & R THE LT WATER EXTRACTOR IAW AMM 21-52-16. ALL IAW AMM 21-52-16, 25-52-32, & 21-51-41.