H001115.TXT - SERVER 320/520 TRAPS AFTER CACHE UPGRADE                        
                                                                                
 SYMPTOM:                                                                       
 PCI/EISA versions of the IBM PC Server 320 and 520 hang or                     
 reboot while booting or loading an operating system.  These                    
 errors have been seen with OS/2, Windows NT, and SCO/UNIX.                     
                                                                                
 PROBLEM ISOLATION AIDS:                                                        
 - The system is an 8640 or 8641 PCI/EISA model.                                
 - A 256KB L2 cache upgrade (Option P/N 94G3141) was installed.                 
 - The system may have a second processor installed.                            
 - Symptoms disappear when disabling cache in BIOS with <F2>.                   
 - Advanced diagnostics run without error.                                      
                                                                                
 FIX:                                                                           
 1. Verify that the cache modules are installed correctly and                   
    that no pins are bent.                                                      
                                                                                
 2. Verify the system board cache jumpers:                                      
    256KB cache: W5 and W10 should have pins 1 and 2 jumpered.                  
    512KB cache: W5 and W10 should have pins 2 and 3 jumpered.                  
                                                                                
 3. Replace any cache modules that have the word "Alliance" or                  
    or the number AS7C3256-15PC with FRU P/N06H8510.                            
                                                                                
 SCO is a trademark of The Santa Cruz Organization, Inc.                        
 Windows NT is a trademark of Microsoft Corp.