AST RESEARCH, INC.         TECHNICAL BULLETIN #1322              9-22-95



                     BRAVO MS AND MS-T SYSTEMS NOT BOOTING

PROBLEM:     The system may not boot or may hang.

CAUSE:       The issue has been traced to a particular TAG RAM 
             manufacturer. The TAG RAM chip manufactured by Paragon, was 
             found to have improper plating in the vias resulting in no 
             continuity between the PCB and the chip. 

SOLUTION:    If the error condition is experienced, the Authorized 
             Service Center technician should check location U-36 on the 
             motherboard. The offending part can be identified by the 
             chip being mounted on a PCB (printed circuit board). If the 
             part is identified, the cache including the TAG RAM 
             component should be removed to restore normal operation. 
             This part is only available in the 256K cache upgrade kit 
             for the Bravo MS and MS-T ( 501284-004) and should be 
             replaced with non-Paragon parts. Non-Paragon parts can be 
             identified by the chip not being mounted on a PCB. A 
             motherboard replacement is not required.


SYSTEMS
AFFECTED:    All Bravo MS and MS-T systems.