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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         :  ECC13325     DATE             : 91-06-20
 MANDATORY         :  N                             : 91-09-05
 AUTOMATIC SHIPMENT:  N            SERVICE CODE     : 33
 PARTS SOURCE      :  FUJI         AVAILABILITY DATE: 89/06
 PARTS SOURCE      :  YASU         AVAILABILITY DATE: 91/07

 PURPOSE:                                                                       
 THIS ECA IS RELEASED FOR JAPAN USE ONLY.                                       
 TO FIX 10483/10458 ERROR BY 120MB HARD DISK DRIVE FAILURE                      
 AT POWER ON TIME.                                                              
 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 97                                                       

 5551- B/MBASIC   MACHINE S/N:             B/M38F7980 01.0 01.0 
 T0B/               9790001 THRU 9791750                        
 TRB                9791812 THRU 9791814                        
                  AND MOREOVER HDD S/N:                         
                  CXXXXXXX                                      
                  20000001 THRU 20133642                        

 Plant 98                                                       

 5541- B/M0005541 SEE PHYSICAL CHECK       B/M79F5341 00.4 00.4 
   TXX                                                          


 PHYSICAL CHECK:                                                                
 TO CHECK AFFECT HDD S/N,SEE A HDD S/N LABEL ON THE TOP COVER OF
 THE HARD DISK DRIVE (P/N 90X9286).                                             
 THIS EC IS APPLICABLE ONLY TO THE SYSTEM UNIT WHICH IS EQUIPPED
 WITH 2-8MB MEMORY EXPANSION CARD, FURTHER MORE IT'S ADAPER 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.

 PREREQUISITES: NONE                                                            
                                                                                
 COMPANION: NONE                                                                
                                                                                
 CONCURRENT: NONE                                                               
                                                                                
 DETAIL: REPLACE A 120MB HDD (P/N 90X9286).                                     

         ATTENTIONšš
         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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