Fujitsu MAA3182FC Series, Manual

Page: 122 / 327

C141-E054-02EN 2 - 21
(1) General response in not ready state
The IDD, except in cases where the received command corresponds to either of the commands
in item 2.7.4 (2), reports the CHECK CONDITION status in response to that command. The
sense data generated at this time show one of the conditions in Table 2.1, depending on the
state of the IDD.
Table 2.1 Sense data in not ready state
IDD State Sense Key Sense Code
Spindle motor not
rotating at normal speed. NOT READY
[=2]
Logical unit not ready
[=04-01]
Reading system
information have not
completed. NOT READY
[=2]
Logical unit not ready
[=04-01]
Reading system
information failed. HARDWARE ERROR
[=4]
Logical unit failed self-
configuration
[=4C-nn]
(2) Commands that can be executed even in the not ready state
The IDD can execute any of the following commands when they are received, even when in
the Not Ready state.
• START/STOP UNIT command
• RESERVE command
• RELEASE command
• WRITE BUFFER command
• READ BUFFER command
• INQUIRY command
• REQUEST SENSE command: When the REQUEST SENSE command is executed
normally and the IDD is in the sense data hold state, the sense data held at that time are
transferred to the INIT. If not in the sense data hold state, sense data corresponding to the
IDD's state at that time (See Table 2.3) are transferred to the INIT.
• REZERO UNIT command: If the direct drive's spindle motor has reached the rated speed,
even if reading of system information failed, these commands are executed. When the spindle
motor has not reached the rated speed, or if reading of system information is in progress, the
IDD responds with the CHECK CONDITION status in the same way as in item 2.7.4 (1).