AST RESEARCH, INC.          TECHNICAL BULLETIN # 0942                 6-24-94




                      ASCENTIA 900N BOOTING AND POWER SOURCE


PROBLEM:        The Ascentia 900N systems may hang during the booting process
                if the power source is changed before the system has completed
                boot up.

CAUSE:          The system has been designed to boot up from a single power
                source only.

SYSTEMS
AFFECTED:           AST                                                REVISION
                PART NUMBER          DESCRIPTION                         LEVEL

                501299-2XX      ASCENTIA 900N 4/50 CS10                   All
                501300-3XX      ASCENTIA 900N 4/50 CT9                    All
                501302-2XX      ASCENTIA 900N 4/75 CS10                   All
                501304-3XX      ASCENTIA 900N 4/75 CT10                   All


SOLUTION:       Use a single power source (either AC or battery) during boot.