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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         :  ECC27234     DATE             : 89-12-14
 MANDATORY         :  N                               93-10-07
 AUTOMATIC SHIPMENT:  Y            SERVICE CODE     : 33
 PARTS SOURCE      :  YASU         AVAILABILITY DATE: 89/12

 PURPOSE: THIS ECA IS RELEASED FOR JAPAN USE ONLY                               
 TO PREVENT SYSTEM HUNG UP WHEN DISPLAY ADAPTER EC(EC#13008 FBM#
 38F7112)IS INSTALLED ON 5571-S0A WITH ASYNC TTL ADAPTER CARD.                  

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

 Plant 97                                                       

 5571 B/M0005571 5571-S0A EQUIPPED WITH    B/M57F0086 00.4 00.4 
 S0A             ASYNC TTL ADAPTER CARD                         
                 P/N94X0836 EC#A27351A                          

 PHYSICAL CHECK:                                                                
 CHECK EC# ON ASYNC TTL ADAPTER CARD (P/N94X0836)                               
 IF EC# IS A27351A, REPLACE IT WITH EC# A27351B OR HIGHER.                      
 PREREQUISITES: NONE                                                            
                                                                                
 COMPANION: NONE                                                                
                                                                                
 CONCURRENT:                                                                    
 WHEN DISPLAY ADAPTER FBM(EC# C13008,FBM# 38F7112) IS INSTALLED                 
 ON 5571-S0A WITH ASYNC TTL ADAPTER, THIS EC IS REQUIRED.                       
                                                                                
 DETAIL: REPLACE A ASYNC TTL ADAPTER CARD
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