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C141-E252 65
CHAPTER 6 Diagnostics and Maintenance
6.1 Diagnostics
6.2 Maintenance
6.3 Operation Check
6.4 Troubleshooting
6.5 Packaging
This chapter describes diagnostics and maintenance.
6.1 Diagnostics
6.1.1 Self-diagnostics
The HDDs have the following self-diagnostic function. This function checks the basic operations of
the HDDs.
• Initial self-diagnostics
• Online self-diagnostics (SEND DIAGNOSTIC command)
Table 6.1 lists the contents of the tests performed with the self-diagnostics. For a general check of
the HDDs including the operations of the host system and interface, use a test program that runs on
the host system (see Subsection 6.1.2).
Table 6.1 Self-diagnostic functions