_ DEC-O-LOG for DEFEB _ DOL, DEFEB-F001, Applications Proc. Module Feb 92 Problem: This FCO corrects the following problems: 1) The DEFEB fan sensing circuitry may indicate properly operating fans even though the fans are malfunctioning. 2) The fan sensing circuitry may indicate malfunctioning fans even though the fans are operating correctly. Field Effectivity: Rework "as needed" DEFEB-AA and DEFEB-AB with 54-19375-01 Application Modules below Revision "B1". This FCO implements ECO number 5419375-TW001. Solution: Replace those DEFEB Application Processor Modules (AP), 54-19375-01, in the Field below Revision "B1" with AP module at Revision "B1". Quick Check: Application Processor (AP) Module, 5419375-01, at Rev "B1". FCO Kit Ordering Information Quantity Part Number Description DEFEB family of -------- ----------- ----------- --------------- EQ-01621-01 1 54-19375-01 Application Procsr Mod Fiber Optic FA-04954-01 1 FA-04954-01 FCO Document Bridges