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AST RESEARCH, INC.         TECHNICAL BULLETIN # 1127                4-5-95

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			  BRAVO MS-L 4/66D WINDOWS GPF ERRORS & MEM.EXE


PROBLEM

The Bravo MS-L 4/66D system may experience the following problems:

1. Loss of Windows Groups while in Windows.

2. Incorrect amount of system memory reported by MEM.EXE.  For example, 
the system has 8 MB of memory but MEM.EXE may report 66 MB.


CAUSE

The +5V power supply may not remain at +5V during power surges. 


SYSTEMS AFFECTED
AST PART NUMBER AND DESCRIPTION

501586-XXX     BRAVO MS-L 4/66D


SOLUTION

If the Bravo MS-L 4/66D system is experiencing the problems described above, 
replace the power supply (part number 230433-002) with part number 230433-005.  

To obtain this part, call your AST Authorized Service Center.


CAUTION

This modification should be performed by a qualified service technician.  
It is strongly recommended that this change be completed by 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.


INSTALLATION PROCEDURE

Removal and replacement of system "Field Replaceable Units" (FRUs) should only 
be performed according to the installation procedures approved and prescribed 
by AST Research, Inc.


CHECK-OUT PROCEDURE

To verify proper operation of the system upon completion of this change, 
follow the setup and test procedures described in the AST User's Manual.


NOTE

Warranty reimbursement for this change requires prior AST Research, Inc. 
approval.