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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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*** OBSOLETED ***

 EC NUMBER         :  ECC72315     DATE             : 91-09-05
 MANDATORY         :  N                               93-10-07
 AUTOMATIC SHIPMENT:  N            SERVICE CODE     : 33
 PARTS SOURCE      :  YASU         AVAILABILITY DATE: 91/07
                                                                                
 PURPOSE:                                                                       
 THIS ECA IS RELEASED FOR JAPAN USE ONLY                                        
 TO PREVENT FOLLOWING MEMORY ERROR.                                             
                                                                                
    1)POST 201,164 ERROR OR HIGH INTERMITTENT POST 111 ERROR                    
        (EXCEPT IN CASE OF CHANGING SYSTEM CONFIGURATION)                       
                                                                                
    2)ADVANCED DIAGNOSTIC ERROR XX02401XX                                       

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

 Plant 98                                                       

 5530- B/M0005530 SEE PHYSICAL CHECK       B/M79F5341 00.4 00.4 
   TXX                                                          

 PHYSICAL CHECK:                                                                
 THIS EC IS APPLICABLE ONLY TO THE SYSTEM UNIT WHICH IS EQUIPPED                
 WITH 2-8MB MEMORY EXPANSION CARD,FURTHER MORE IT'S ADAPTER CARD                
 NEEDS TO SATISFY FOLLOWING CONDITIONS.                                         
                                                                                
  AFFECTED 2-8MB MEMORY EXPANSION CARD :                                        
    A)P/N:23F3058 EC#:341657,341657A OR 341657B.                                
   AND                                                                          
    B)PRIOR TO 9012, WHICH IS STAMPPED ON MODULE DL1/DL2(DELAY                  
      LINE) OF THE CARD.(REFER TO NEXT LOCATION CHART)                          
      _____________________________________                                     
     | P/N 23F3058   __                    |    __________                      
     |              |__|DL1  ----------------->| PE-2178X |                     
     |  _________   |__|DL2 ___________    |   | XXXXN SEC|                     
     | |__J3_____|   __    |____JI_____|   |   | 9012-L<---CHECK
     |  _________   |__|    ___________    |   | CHINA    |
     | |__J4_____|         |____J2_____|   |   |__________|                     
     |_____________________________________|                                    
                                                                                
 PREREQUISITES: NONE                                                            
                                                                                
 COMPANION: NONE                                                                
 CONCURRENT: NONE                                                               
                                                                                
 DETAIL:                                                                        
 REPLACE THE 2-8MB MEMORY EXPANSION CARD.                                       
                                                                                
 ATTENTION!!                                                                    
 RETURN THE REMOVED CARD WITH EC COMPLETION REPORT AS SOON AS                   
 POSSIBLE AFTER EC INSTALLATION.                                                
                                                                                
 NOTES:                                                                         
 THIS FBM IS AVAILABLE FOR ONE YEAR.                                            
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