_ DEC-O-LOG for 11785 _ DOL, 11785-R0001, VAX 11/785 Systems DEC 84 PROBLEM: Intermittent System crashes and machine checks associated with cache parity errors. CORRECTION: Delay parity and parity enable signals one cycle to prevent system crashes. IN-PLANT EFFECTIVITY: SEP 84 FIELD EFFECTIVITY: Retrofit all VAX 11/785 Systems to Revision Level 01. QUICK CHECK: Check for a 74S51 in spare location E10. The DEC on-site labor charge will be the time required to install and test the FCO at the then current hourly rate. FCO KIT ORDERING: EQ-01318-01: FCO, PARTS FA-04597-01: FCO only _ DOL, 11785-3-R003, VAX 11785 Systems FEb 88 PROBLEM: Timing problem in the data path section of the CPU. FIELD EFFECTIVITY: Retrofit all 11785 systems to include this FCO. This FCO brings the 11785 Systems to Revision 3 and incorporates the following ECOs: M7460-MK005, M7468-MK003, M7468-MK03A, M7468-MK03B, M7469-MK005, M7469-MK05A, M7470-MK006, M7471-MK001, M7471-MK01A, M7472-MK003, 7020579-MK004, and 7020579-MK006. QUICK CHECK: For M7460 REV "D1" - wire from E68-8 to E68-5. For M7468-YA REV "A1" - wire from E50-7 to E60-7. For M7469-YA REV "A1" - wire from E91-15 to PTH below and attached to E116-1; For Rev "A2" - wire from E120-2 to PTH above E119-8. For M7470-YA REV "A1" - 74S51 at location E58; For REV "A2" 74S51 at location E99. For M7471-YA REV "A1" - wire from E55-14 to I/O finger AR1. For M7472 REV "C1,C2" - wire from E92-2 to E92-9. For BACKPLANE REV "D" -wire from B26M2 to E28D1. For BACKPLANE REV "E" - wire from A13J1 to F11P2. For BACKPLANE REV "A" - (70-20579-02) twisted wire from B13F1 to F10R1. This revised FCO supersedes Rev. B, released 07 Aug. 1987. It has been revised to incorporate new and critical information about the ucode, addition of a new EQ kit and changes to the contents of the EQ kits. FCO KIT ORDERING: EQ-01425-XX FCO, PARTS FA-04710-01 FCO, only