---------------------------------------------------------------------
                           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
---------------------------------------------------------------------
 EC NUMBER         :  ECC80684     DATE             : 91-09-05
 MANDATORY         :  N
 AUTOMATIC SHIPMENT:  N            SERVICE CODE     : 33
 PARTS SOURCE      :  EMO          AVAILABILITY DATE: 91/07

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

 Plant 99                                                       

 5571- B/M0000000 JOYSTICK OF LDT KBD      B/M95F4272 00.4 00.4 
 LDT                                                            

 PURPOSE:                                                                       
 THIS ECA IS RELEASED FOR JAPAN USE ONLY                                        
 TO IMPROVE JOYSTICK QUALITY OF 5571-LDT KEYBOARD AS FOLLOWING.                 
                                                                                
 JOYSTICK ASM P/N:94X1593                                                       
   1)JOYSTICK SWITCH CHATTERING--->SW CHANGE                                    
   2)SW CABLE WEAR IMPROVEMENT                                                  
   3)JOYSTICK LEVER MATERIAL CHANGE                                             

 PHYSICAL CHECK:NONE                                                            
                                                                                
 PREREQUISITES: NONE                                                            
                                                                                
 COMPANION: NONE                                                                
                                                                                
 CONCURRENT: NONE                                                               
                                                                                
 DETAIL:                                                                        
 REPLACE A JOYSTICK ASM.                                                        
                                                                                
 ATTENTION!!                                                                    
 RETURN THE REMOVED JOYSTICK WITH EC COMPLETION REPORT AS SOON
 AS POSSIBLE AFTER EC INSTALLATION.
                                                                                
 NOTES:                                                                         
 THIS FBM IS AVAILABLE FOR ONE YEAR.                                            
---------------------------------------------------------------------