AST RESEARCH, INC.        TECHNICAL BULLETIN # 1679          04/15/97 
 
 
 
TITLE:  Hard Drive Errors on the Manhattan S/CP
 
 
ISSUE 
 
   Some customers have experienced failures with SCSI hard drive 
   mounting trays. These trays may cause a number of different 
   symptoms including:
   
       Drives dropping off-line.
       Drives failing to spin-up at boot.
       Loss of RAID syncronization
       DPT Event Log errors such as "Command Aborted" and 
       "SCSI Sense" errors.
   
   This issue could potentially affect all Manhattan S6200 and 
   Manhattan Commerce Pro servers, as well as all hard drive option 
   kits for these servers shipped before 4/1/97.    

 
BACKGROUND 
 
   N/A    

 
ACTION 
 
   If you experience any of the symptoms mentioned above, inspect 
   all SCSI hard drive mounting trays for the following Part Numbers 
   and Revisions:
   
    202763-002  Revision A   (p/n on PCB label)
    202763-002  Revision B         "
    202763-002  Revision C         "
   
    205318-001   Any revision (p/n pressed into metal tray)
   
   If any of the above part numbers are present, replace the SCSI 
   mounting tray assembly.
   
   Order replacement trays through an AST Authorized Service Center. 
   The new replacement tray assembly part number is 221357-004.    

 
NOTES 
 
   N/A    

 
TAN 000653EC 
 
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