4.4

Maintenance, Diagnostic Commands

 

 

Table 4.47 Self-diagnosis test

 

 

 

 

 

 

 

 

 

Type of Self-diagnosis Test

UnotOfl = "0"

UnitOfl = "1"

 

 

 

 

 

 

 

 

1)

Controller Function Test

×

×

 

 

 

 

 

 

 

 

2)

Disk Drive Seek Test

 

×

 

 

 

 

 

 

 

 

3)

Disk Media Write/Read/Data Comparison Test

 

×

 

 

 

 

 

 

 

×: Execution Object

When the HDD completes all the specified self-diagnosis tests normally, it reports a GOOD status. On the other hand, when an error is detected in any of the specified self-diagnosis tests, a CHECK CONDITION status is reported and information related to the detected error is shown in the sense data. For example, when an error is detected in the controller function test, the type of error is shown by HARDWARE ERROR [=4] in the sense key, and the additional sense code/additional sense code qualifier show "Diagnostic failure on component 'nn' [=40-nn]." (nn is the code in the range X '80' to X 'FF,' which shows the type of error. This code is a Fujitsu unique definition for the purpose of analysis when there is a failure, and its meaning is not released to the public. The user should present the value displayed in this sense data as repair information to the Fujitsu representative.)

Furthermore, error recovery processing when diagnostic tests (seek tests and write/read/data comparison tests) related to the disk drive are executed are in accordance with the mode set in the MODE SELECT command's parameters (Page code 1: Read/Write Error Recovery parameter, Page code 21: Additional Error Recovery parameter), except in the following special cases.

Special cases of MODE SELECT parameters during a self-diagnosis test are as shown below

The AWRE, ARRE and TB flags are not applied.

The PER and DTE flags are as shown in Table 4.48.

C141-C013

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Fujitsu MBC2073RC, MBC2036RC, MBA3300RC, MBA3147RC, MBA3073RC specifications Self-diagnosis test