H137544:  ECA002, 9545 MOD 755CE/CSE/CD  TRAP, HANG, OR NO POWER                
                                                                                
 PURPOSE:                                                                       
 When replacing any FRU within the logic assembly inspect the                   
 DC/DC card FRU P/N85G1500. Replace it if it matches the PHYSICAL               
 CHECK.  A small number of DC/DC adapter cards of this level                    
 could cause solid hangs, Trap 2, D, E or no power conditions.                  
                                                                                
 FEATURES:                                                                      
 Type,                  Machines Affected                                       
 Model,   With          and/or Feature/Device     B/M to be    Service  System  
 Stage    B/M           Description               Installed    Hours    Hours   
                                                                                
 9545     B/M9999999    MOD 755CE, CSE & CD       B/M9999999   00.4     00.2    
                                                                                
 PHYSICAL CHECK:                                                                
 1. Remove the main battery. A label on the base cover under the                
    battery stating "EC F00944 Applied" indicates this ECA is                   
    already installed.  No further inspection or action is                      
    required.                                                                   
                                                                                
 2. If the label described above is not under the battery,                      
    examine the DC/DC card, FRU P/N85G1500.  If it has a red                    
    capacitor with date code of 4HC in position 41, or a red                    
    capacitor with a date code of 4JC or 4KC in position 50,                    
    the DC/DC card must be replaced.                                            
    See the Detail section for position locations.                              
                                                                                
 NOTE: DC/DC cards with purple capacitors in position 41 or 50                  
       are at EC F00944 and do not require this ECA.                            
                                                                                
 PREREQUISITES: NONE                                                            
                                                                                
 COMPANION: NONE                                                                
                                                                                
 CONCURRENT: NONE                                                               
                                                                                
 DETAIL:                                                                        
 The 9545 755 CE, CSE, and CD models in the FEATURES SECTION                    
 without an EC label F00944 installed should have the DC/DC                     
 Adapter FRU P/N85G1500 checked when any FRU in the system's                    
 Logic assembly is being serviced.                                              
                                                                                
 Use the DC/DC Adapter card diagram in Figure 1 to determine the                
 position of the affected capacitors.  If they are present,                     
 replace the card. All DC/DC Adapter card FRU stock of P/N85G1500               
 contains the correct level capacitors.                                         
                                                                                
 Figure 1                                                                       
                                                                                
              ____________________________________________                      
             |                                           |                      
             |   DC/DC Card FRU P/N85G1500       ___     |                      
     ________|                                  |   |    |                      
    |                                           |___|    |                      
    |         Red Barrel Capacitors-->__(_)_(_)__________|                      
    |                _______________ |  41  50  <-Positions                     
    |   Connector-->|_______________|| 4HC  4JC <-Date Codes                    
    |________________________________|      4KC                                 
       |__|<--4 Pin power connector                                             
                                                                                
 NOTES:                                                                         
 This ECA will expire on April 30, 1998.  Order the DC/DC card                  
 locally.