Fujitsu MAW3300fc User Manual

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C141-E235 

 

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

 

The sense data posted from the HDD helps 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 disk drive subassembly.  This fault finding requires a working 
host computer or disk drive test equipment to recreate the error conditions. 

 

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

 

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

Item Recommended 

action 

Frequent or repeated seek errors 

Collect sense data, and see Chapter 7. 

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

Intermittent or nonfatal errors 

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

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

 

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

 

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

 

 

Never open the disk enclosure for any reason. 
Doing so will void any warranties.