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    AST RESEARCH, INC.          TECHNICAL BULLETIN # 1014                 11-16-94

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                          ASCENTIA 900N, 800N AND WYSE MONITOR

    PROBLEM:        The video appears to roll and is out of sync on the Ascentia
                    900N and 800N systems using a WYSE WY-157ODES monitor
                    (P/N 901703-XX).

    CAUSE:          The video signal is less than 3.15 volts.

    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
                    501469-3XX      ASCENTIA 800N 4/33                        All
                    501469-4XX      ASCENTIA 800N 4/33                        All
                    501471-3XX      ASCENTIA 800N 4/50                        All
                    501471-4XX      ASCENTIA 800N 4/50                        All

    SOLUTION:       WYSE will provide instructions to remove two resistors (one on
                    the main board, one on the video board) that affect the video
                    buffer circuit on the monitor.
                    Contact the WYSE Customer Service Center at (800) 800-WYSE and
                    reference Field Engineering Bulletin (FEB) # 0446.  This FEB
                    qualifies as a valid in-warranty claim.
                    Customers in all countries outside the United States should
                    contact the local WYSE Service Center.