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.