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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         :  EC341966     DATE             : 89-02-02
 MANDATORY         :  N                             : 91-06-20
 AUTOMATIC SHIPMENT:  N            SERVICE CODE     : 33
 PARTS SOURCE      :  FUJI         AVAILABILITY DATE: 88/12

 PURPOSE:                                                                       
 THIS ECA IS RELEASED FOR JAPAN USE ONLY.                                       
 TO SOLVE HDD HIGH FALLOUT WITH DATA ERROR PROBLEM.                             
                                                                                

 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                                                           
  J08 B/MBASIC   99R2182 THRU 99R7886      B/M38F4654 01.0 01.0 
  J08 B/MBASIC   99A3709 THRU 99A6958      B/M38F4654 01.0 01.0 
  K08 B/MBASIC   99R2282 THRU 99R7785      B/M38F4654 01.0 01.0 
  K08 B/MBASIC   99A4009 THRU 99A7108      B/M38F4654 01.0 01.0 

                                                                                
 PHYSICAL CHECK: NONE                                                           
                                                                                
 PREREQUISITES: NONE                                                            
                                                                                
 COMPANION: NONE                                                                
                                                                                
 CONCURRENT: NONE                                                               
                                                                                
 DETAIL: IF YOU EXPERIENCE DATA CHECK, DEFECTIVE SECTORS OR                     
         FORMAT ERROR ON HDD IN AFFECTED MACHINE SERIAL RANGE                   
         ESPECIALLY IN HIGH HUMIDITY ENVIRONMENT, INSTALL                       
         FBM 38F4654 WHICH IS TO BE REPLACED THE HDD.                           
                                                                                
 NOTES: THE FBM IS AVAILABLE FOR ONE YEAR.                                      
 -----> REVISED IN 1989-OCTOBER
        APPOICABLE PERIODE OF THIS FBM WAS EXPANDED FOR ADDITIO-
        NAL ONE YEAR.
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