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    AST RESEARCH, INC.              TECHNICAL BULLETIN # 0931              5-31-94

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    			    AST COMPUTER FLOPPY DRIVE ERROR

    PROBLEM:        Certain AST computers may exhibit the following floppy drive
    		failures with Mitsumi floppy drives:

    		1. After performing a read/write operation on a 1.44 density
    		   floppy diskette, the drive will no longer read a 720k
    		   diskette until the system is rebooted.

    		2. After performing a read/write operation on a 720k diskette,
    		   the drive will not read a 1.44 diskette until the system is
    		   rebooted.

    CAUSE:          Improper cabling from the floppy drive to the system board may
    		cause bent pins on the system board floppy drive connector.

    SYSTEMS
    AFFECTED:       AST
    		PART NUMBER     DESCRIPTION
    		500887-XXX      PREMIUM SE4-33/3
    		500888-XXX      PREMIUM SE4-50/3
    		500998-XXX      PREMIUM SE4-50D
    		500999-XXX      PREMIUM SE4-60D
    		501200-XXX      PREMMIA SE4-33
    		501202-XXX      PREMMIA SE4-60d
    		501203-XXX      PREMMIA SE-P60
    		501204-XXX      PREMMIA MTE 4-33
    		501206-XXX      PREMMIA MTE 4-66D
    		501232-XXX      PREMMIA MTE P/60

    SOLUTION:       Reseat the cable on the component side of the system board.
    		It is strongly recommended that this modification be performed
    		by a qualified service technician at an AST Authorized Service
    		Center.  In no case will AST Research, Inc. be liable for
    		damage to the system and its components, or loss of data caused
    		by improper modification.