_ DEC-O-LOG for DS-650Q2 _ DOL, DS-650Q2-F001, MIRA Systems, APR 90 PROBLEM: Cross-talk problem between Dispatcher cable and switched cable. Revision incompatibility problem between M7764-00 and M7763-00 module. Intermittent data corruptions happen when testing switched KMV1A with MDM Diagnostics in MIRA Systems. FIELD EFFECTIVITY: This FCO should be installed on all MIRA MicroVAX 3000 (also called MIRA 3200) systems shipped before 03-Jul-1989 with DS-650Q2-A2/A3 part numbers. This FCO is also required for Special Customized MIRA systems (not always referred to with the part numbers listed above), that use the MIRA logic modules M7763 and M7764 at Revision D or below. This FCO incorporates ECO's M7763-AE006 and M7764-AE004. QUICK CHECK: If all the cables on the watch-dog module M7763-00 are flat cables, this FCO is required. If you find a round cable (70-27118-03) connected to the M7763, the module is at the correct Revision (E), and the FCO is not required. FCO KIT ORDERING: EQ-01568-02 FCO, Parts FA-04886-01 FCO Document only