Fujitsu MBA3073RC Manual Do Utilizador

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C141-E252 

 

For maintenance at this level, we recommend additional testing of the HDD and signal checking. 

 

The sense data posted from the HDDs help with troubleshooting.  This sense data makes the error type clear 
(functional, mechanical, or electrical error).  Chapter 7 error analysis by sense data, and gives 
supplementary information on finding the error cause (faulty part). 

 

Table 6.3 lists how to detect a faulty HDD subassembly.  This fault finding requires a working host 
computer or HDD test equipment to recreate the error conditions. 

 

If the detected error cannot be recreated in an ordinary test, HDD conditions can be changed to force 
the error to recur.  This is done by changing the DC voltage or the ambient temperature of the HDD. 

 

If the error does not recur with changed conditions, the HDD is not faulty.  If no error occurs in the 
HDD test, notify the user of the test results, and find out from the user the environment conditions 
where the HDD is used. 

Item Recommended 

action 

Frequent or repeated seek errors 

Collect sense data, and see Chapter 7. 

Replace the HDD, and check that the test method is correct.  If the 
error recurs, it is likely that the HDD is normal but the test method is 
incorrect. 

Intermittent or nonfatal errors 

Replace the HDD, and check that the test method is correct.  If the 
error recurs, it is likely that the HDD is normal but the test method is 
incorrect. 

To check performance, change the HDD conditions by changing the 
voltage or temperature. 

 

If the HDD error recurs or a possibly faulty part is found by troubleshooting, return the complete 
HDD to Fujitsu for repair.  A media defect list must be included with the HDD returned to Fujitsu. 

 

If the possibly faulty part is the DE, return the whole HDD to Fujitsu for repair.  Also if a clear error 
(erroneous servo track information or noisy HDD) is detected in the DE, return the whole HDD to 
Fujitsu.  A media defect list must be included with the HDD returned to Fujitsu. 

 

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