Service Manual

Table Of Contents
25
 

......................................................................................75

 LED

................................................................................................................75
 
 
......................................................................................................................81
 
..............................................................................................................................84



...........................................................................................................84

!



 


  [nnnn]

  
   
    
 Dell.......................................................................................84

! 
   
...................................................................................................84

 ..............................................................................................................84
 
   ........................................................................................................84

 
  (ECC)
  ................................................................................84

 
.........................................................................................................84


...................................................................................................................85
 
 ..............................................................................................................85

     0.................................................................................85
  ..................................................................................................................85



  ................................................................................................85
 Gate A20.............................................................................................85
  .........................................................................................................................85

  


 ...................................................................................................86
 
  


............................................................................................86
  


 ..........................................................................................................86
   


...................................................................................................86


  
 

.............................................................................86
 
  
DIMM1.......................................................................86
  
..................................................................................................................86
 
 


 
  ..............................................................................86

 ................................................................................................................86
 
 


 
 ...............................................................................87

   


 
 .......................................................................87

 /




 
 .......................................................................87
/
 


 
 .....................................................................................87
  CMOS
 .................................................................................................87