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                           IBM ECA
              Engineering Change Announcement

Parts removed from this machine and returned to IBM must be genuine,
                      unaltered IBM Parts

         IBM World Trade Corporation, CE Department Germany
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 EC NUMBER         :  ECC72349     DATE             : 90-11-08
 MANDATORY         :  N                               93-05-18
 AUTOMATIC SHIPMENT:  N            SERVICE CODE     : 33
 PARTS SOURCE      :  FUJI         AVAILABILITY DATE: 91/05
                                                                                
 PURPOSE:                                                                       
 THIS ECA IS RELEASED FOR JAPAN USE ONLY                                        
 TO PREVENT READ ERROR OF 30MB HDD P/N6128216 OR P/N6128283.                    

 Type             Machines Affected                             
 Mod.  With       and/or Feature/Device    B/M to be  Serv Syst 
 Stg.  B/M        Description              Installed  Hour Hour 

 Plant 97                                                       

 5551- B/M0005551 SEE PHYSICAL CHECK       B/M79F5410 01.0 01.0 
  M19                                                           
  P19                                                           

 PHYSICAL CHECK:                                                                
 CHECK PART NUMBER AND LOT NUMBER OF 30MB HDD ASM.                              
 FOLLOWING FIXED DISK IS AFFECTED.                                              
      P/N  : 6128216 OR 6128283                                                 
      LOT# : XM,XN                                                              
             (X IS ANY ALPHABET)                                                
                                                                                
 PREREQUISITES: NONE                                                            
 COMPANION: NONE                                                                
 CONCURRENT: NONE                                                               
                                                                                
 DETAIL:                                                                        
 REPLACE 30MB HDD P/N6128216 OR P/N6128283 WITH NEW P/N95F4086.                 
                                                                                
 ATTENTION!!                                                                    
 RETURN THE REMOVED PART WITH THE COMPLETION REPORT AS SOO AS                   
 POSSIBLE.                                                                      

 NOTES:                                                                         
 THIS FBM IS AVAILABLE FOR TWO YEARS AND USED ON MODEL 5541-M19/                
 P19 TOO.                                                                       
 ---- REVISED
      THE APPRICABLE PERIODE OF THIS FBM WAS EXPANDED UNTIL THE
      END OF APRIL IN 1994.
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