    AST RESEARCH, INC.        TECHNICAL BULLETIN # 1561          08/27/96

    TITLE:  Vibration Torisan CDR_S16 CD-ROM Drive

    SUMMARY

       Systems using the Torisan CDR_S16 6x CD-ROM drive, AST part number
       234441-910, may experience vibration and noise.

       This issue applies to all systems using the CD-ROM drive mentioned
       above.

    ISSUE

       Excessive vibration and resulting noise may occur in all systems
       using the CD-ROM drive, when using the Torisan CDR_S16 6x CD-ROM
       drive with a CD-ROM that is not perfectly balanced.

    BACKGROUND

       The vibration and noise are caused by the high rotation of some
       unbalanced CDs.

    ACTION

       Use the AST spares kit, part number 590017-001, and install it
       according to the instructions included in the kit. The additional
       padding should reduce the vibration to an acceptable level.

    NOTES

       N/A

    TAN 002613RL

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