AST RESEARCH, INC.         TECHNICAL BULLETIN #0842A              09-30-93




                     BRAVO LC WITH CMOS BATTERY FAILURE

PROBLEM:       After one week of operation the CMOS battery fails and the
               system setup is lost.

CAUSE:         The failure is caused by a Motorola chip, part number
               MCCS146818B at location U41.  Only revision B of the chip will
               experience this problem.  Motorola chip MCCS146818A is not
               affected.

AFFECTED
SYSTEMS:       All models of Bravo LC and Advantage with motherboard part
               number 202492-XXX or 202480-XXX with Motorola chip
               MCCS146818B.

SOLUTION:      Replace the system board with similar part number, which can
               be located between the slots.  All stock at AST has been
               reworked and the affected component is no longer used.  The
               motherboard can be sent to AST for repair or the system can be
               sent in to the AST Repair Center for the board to be replaced.