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C141-E234 6-1
CHAPTER 6 Diagnostics and Maintenance
6.1 Diagnostics
6.2 Maintenance Information
6.3 Operation Check
6.4 Troubleshooting Procedures
This chapter describes diagnostics and maintenance information.
6.1 Diagnostics
6.1.1 Self-diagnostics
The HDD has the following self-diagnostic function. This function checks the basic operations of the
HDD.
• 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 HDD 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