Service Manual

  
 6 .  
 
Alert! Previous attempts at booting this system
have failed at checkpoint [nnnn]. For help in
resolving this problem, please note this
checkpoint and contact Dell Technical Support
           .
CMOS checksum error
   RTC    BIOS .
CPU fan failure
    .
System fan failure
  .
Hard-disk drive failure
            
) POST.(
Keyboard failure
       .        
   .
No boot device available
              
        .
•             
        .
•         .
No timer tick interrupt
              .
NOTICE - Hard Drive SELF MONITORING SYSTEM has
reported that a parameter has exceeded its
normal operating range. Dell recommends that
you back up your data regularly. A parameter
out of range may or may not indicate a
potential hard drive problem
       ) S.M.A.R.T(  
    .
  73