    AST RESEARCH, INC.         TECHNICAL BULLETIN #0830                  05-20-93

                       MANHATTAN SMP AND AST RAID CONTROLLERS

    PROBLEM:       When installing the AST Empire Disk Array controllers (part
                   number 202414-002 and 230355-002), the side door of the system
                   may not close properly.

    CAUSE:         The side door of the Manhattan SMP has a metal bracket that
                   holds the boards in place during shipment.  The height of the
                   Empire disk array controller with cables installed may be too
                   tall to allow the side door to close properly.

    SOLUTION:      When the AST Empire disk array controllers are used, the metal
                   PCB retainer must be removed.  This can be accomplished by the
                   removal of one screw located on the upper side of the
                   retainer.  Slide the retainer upward about half an inch, and
                   pull the bottom outwards, completely removing it by sliding it
                   down.

    NOTE:  The metal PCB retainer bracket will be removed on future product and
           will be replaced by a foam retainer.