H132521 - CORRUPTED/DISTORTED VIDEO ON PC700 WITH OS/2                                                                          
                                                                                                                                    
                                                                                                                                    
  SYMPTOM:                                                                                                                          
  IBM PC 700 Series 6875, 6885, 6876 and 6886 systems                                                                               
  with S3 Vision864 integrated video chipsets may experience                                                                        
  video corruption while running applications in OS/2 seamless                                                                      
  mode (in a window as opposed to full screen mode).  This                                                                          
  symptom has been experienced with applications such as                                                                            
  Lotus 1-2-3 for Windows.                                                                                                          
                                                                                                                                    
  PROBLEM ISOLATION AIDS:                                                                                                           
  Applications running in a seamless mode on the OS/2 Desktop may                                                                   
  intermittently begin to lose video synchronization which may                                                                      
  cause the video image to fade out, begin to roll, or become too                                                                   
  distorted to read.  The power-on LED on IBM and other brands of                                                                   
  multi-sync monitors will begin to blink when video sync is lost.                                                                  
                                                                                                                                    
  The PC 700 Series systems are built with either an S3 Vision864                                                                   
  or S3 Vision868 video chipset.  The following system board                                                                        
  FRU part numbers with the S3 Vision868 chipset are NOT affected:                                                                  
                                                                                                                                    
   FRU P/N12H1947 ISA 100Mhz & below Models                                                                                         
   FRU P/N12H1954 Micro Channel 100Mhz & below Models                                                                               
   FRU P/N40H4759 Micro Channel 100Mhz+ Models                                                                                      
   FRU P/N40H4760 ISA 100Mhz+ Models                                                                                                
                                                                                                                                    
  Only system boards with the S3 Vision864 chipset AND an S3                                                                        
  Video DAC in location U3, next to the battery, are affected.                                                                      
                                                                                                                                    
  FIX:                                                                                                                              
  Not all systems will exhibit the failure even while running                                                                       
  seamless applications.  The following system board FRU                                                                            
  part numbers should be replaced if normal problem determination                                                                   
  efforts conclude that the failure is consistent with this tip:                                                                    
                                                                                                                                    
  FRU P/N88G4270 / Asm P/N40H4811 (75/90Mhz ISA Bus Models)                                                                         
                                                                                                                                    
  FRU P/N11H5545 / Asm P/N40H4795 (75/90Mhz Micro Channel Models)                                                                   
                                                                                                                                    
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