Fujitsu MAP3735, MAP3367, MAP3147, MAS3735 Sense data in not ready state, Not Ready, Hardware Error

1.7 Command Processing Exceptions

• When reading of system information is not completed, or reading failed.

Also, if initialization of the disk media (formatting) has not been completed normally, it will be impossible to access data on the disk media.

Processing of and response to commands received by the IDD when it is in the not ready state or in the initialization incomplete state are described below. Furthermore, starting control of the spindle motor when the power is switched on can be selected from either or two methods, through the setting terminal (motor start mode) on the IDD, with rotation started at the same time as when the power is switched on or through the START/STOP UNIT command.

(1)General response in not ready state

The IDD reports a CHECK CONDITION status for a command, except in cases where the command is one of the commands in item (2). The sense data generated at this time depends on the state of the IDD, as shown in Table 1.3.

Table 1.3 Sense data in not ready state

IDD State	Sense Key	Sense Code
Spindle motor not	NOT READY	Logical unit not ready
rotating at normal speed.	[=2]	[=04-01]
Reading system	NOT READY	Logical unit not ready
information have not	[=2]	[=04-01]
completed.
Reading system	HARDWARE ERROR	Logical unit failed self-configuration
information failed.	[=4]	[=4C-nn]

(2)Commands that can be executed even in the not ready state

If the IDD receives any of the following commands, it executes those commands even if it is in the Not Ready state.

•START/STOP UNIT command

•RESERVE command

•RELEASE command

•WRITE BUFFER command

•READ BUFFER command

•INQUIRY command

•REQUEST SENSE command: The REQUEST SENSE command is executed normally. If the IDD is in the sense data hold state, the sense data being held at that time are transferred to the INIT. If not, sense data appropriate to the IDD’s state at that time are transferred to the INIT (See Table 1.3).

•REZERO UNIT command: If the spindle motor has reached the normal rotational speed, this command is executed even if reading of system information failed. If the spindle motor has not

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