    AST RESEARCH, INC.         TECHNICAL BULLETIN #0822                  04-07-93

                         PREMMIA SYSTEMS WITH ZIF CONNECTORS

    PROBLEM:       After updating CPUs, some Premmia systems with ZIF connectors
                   manufactured by AMP would no longer boot.

    CAUSE:         When the bail on the AMP ZIF connector (part number 916461-1)
                   is not opened completely, damage to various pins on the CPU
                   may result.

    SYSTEMS
    AFFECTED:      AST Premmia.

    SOLUTION:      Upon AMP's evaluation of the problem, it was concluded that
                   when the bail is opened to a 90 degree angle (or greater), the
                   CPU can be safely inserted or removed.

                   AST is currently designing a caution label that will be placed
                   near the ZIF socket advising customers that the bail arm must
                   be in its full open position, before removing or installing a
                   CPU.