Fujitsu MHY2040BH 用户手册

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7.2  Operation Confirmation 
C141-E262 
7-11 
7.2  Operation Confirmation 
7.2.1  Operation test 
When the host computer is processing data, the disk drive monitors disk drive 
operation errors including data, command, and seek errors.  The host is notified of 
the error that the disk drive detected and the user is notified of its result. 
The user may notice intermittent and indefinite failures such as overlong 
execution time, abnormal noise, abnormal odor, or failures in particular processes. 
The failure reported in the operation test will need further investigation.  To 
ascertain the cause of the disk drive failure reported, the disk drive can be 
replaced.  Failures in the operation test are often not caused by the host system.  
For example, not having enough power supply reserve, a loose cable connection, 
no timing and mechanical reserves, or relationship with other systems. 
In normal operation, the disk drive itself or the host determines the processing 
(return or halt) following the detected failure state. 
To troubleshoot the failure reported in the test at this level, accurately reproduce 
the condition that caused the failure.  Then, by replacing the disk drive, try to 
separate the fault from the other sections of the disk drive host system. 
7.2.2  Diagnostic test 
The diagnostic test is used to separate a confirmed disk drive failure to a disk 
drive subassembly or to check the disk drive performance.  A test of this level 
usually includes a specific disk drive function or concentrated execution of a 
group of functions.  The test is usually performed by a factory engineer and not 
where the failure was reported.  The disk drive is tested using another host 
computer or test equipment. 
To troubleshoot the disk drive failure in the diagnostic test, the engineer will 
reproduce the failure condition.  The engineer then isolates the failure to a 
subassembly or part of the disk drive. 
The procedures used in a test of this level great depend on the test equipment 
used.  It is beyond the range of this manual.