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    AST RESEARCH, INC.          TECHNICAL BULLETIN # 1021                 11-28-94

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             BRAVO LC 4/50S NOISE WITH GRAPHICS ADAPTERS AND SOUND BOARDS

    PROBLEM:        The Bravo LC 4/50s system may experience loud static and
                    distorted sounds during play when using a Creative Labs Sound
                    Blaster 16, CT2230 with either a New Media Graphics Super
                    Video (single input, version E1) Windows adapter card or an
                    Intel Action Media II DVI adapter card.  The DVI application
                    software can not access the hardware.

    CAUSE:          Incompatibility between the sound board and system board
                    P/N 202594-103, revision X14 or lower.

    SYSTEMS
    AFFECTED:           AST
                    PART NUMBER           DESCRIPTION

                    501433-010      BRAVO LC 4-50S/273W 8MB

    SOLUTION:       Upgrade the system board (P/N 202594-103) to revision X15 or
                    higher.

    STATUS
    VERIFICATION:   The revision level of the AST system board can be identified
                    by observing the revision letter at the end of the nine-digit
                    part number located on the component side of the system board.