What was found
DFW/ATL - FLT 234 - HAD TO DIVERT TO MEM DUE TO CABIN DE-RESSURIZATION. AUTOPRESSURIZATION FAILED AND OXYGEN MASKS DEPLOYED, EXCEPT 4 AT ROWS 5C, D, AND E. REMOVED AND REPLACED OYGEN BOTTLE AND DROP-CHECKED OXYGEN MASKS. OPS CHECK OKAY, PLACED AUTOPRESS ON MEL.