(1) Interface test
The operations of the SCSI bus and data buffer on the HDD are checked with the WRITE
BUFFER and READ BUFFER commands.
(2) Basic operation test
The basic operations of the HDD are checked by executing self-diagnosis with the SEND
DIAGNOSTIC command (see Subsection 6.1.1).
(3) Random/sequential read test
The positioning (seek) operation and read operation are tested in random access and sequential
access modes with the READ, READ EXTENDED, or VERIFY command.
(4) Write/read test
By using a data block in the internal test space, the write/read test can be executed with an
arbitrary pattern for a disk drive in which user data is stored.
6.2 Maintenance
See Section 5.1 and 6.5 for notes on packaging and handling when returning the HDD.
CAUTION
Data loss
Save data stored on the HDD to other media before requesting
repair. Fujitsu does not assume responsibility if data is corrupted
during servicing or repair.
6.2.1 Precautions
Take the following precautions to prevent injury during maintenance and troubleshooting:
CAUTION
High temperature
To prevent injury, never touch the HDD while it is hot. The DE and
LSI become hot during operation and remain hot immediately after
turning off the power.
C141-E270 99
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