Fujitsu MHV2120AT manual Operation Confirmation, Operation test, 1 Status register contents

Maintenance and Diagnosis

Table 1.1 Status register contents

	Bit		Contents
BIT0=1		Shown in Table 1.2
BIT1, 2		It is not necessary to take any measure when other bits are
		normal, in spite of these bits. (Normal)
BIT3=1		(1)	Check whether vibration is transmitted because of the way
BIT4=1			the disk drive is mounted.
BIT5=1 Any of these		(2)	Check the power, cable, and connector.
BIT6=0	cases.	(3)	If it is concluded that the disk drive is the cause, replace the
			disk drive.
BIT7=1

Table 1.2 Disposition for error register contents

	Error bit	Method of disposition
BIT0
BIT1	Any of these	If it is concluded that the disk drive is the cause, replace the
BIT4	bits are “1”.	drive.
BIT6
BIT2	Any of these	(1) Check the status of the host, cable, and drive.
		(2) If it is concluded that the disk drive is the cause,
BIT7	bits are “1”.
		replace the drive.

1.2Operation Confirmation

1.2.1 Operation test

When the host computer is processing data, the disk drive monitors disk drive operation errors including data, command, and seek errors. The host is notified of the error that the disk drive detected and the user is notified of its result.

The user may notice intermittent and indefinite failures such as overlong execution time, abnormal noise, abnormal odor, or failures in particular processes.

The failure reported in the operation test will need further investigation. To ascertain the cause of the disk drive failure reported, the disk drive can be replaced. Failures in the operation test are often not caused by the host system. For example, not having enough power supply reserve, a loose cable connection, no timing and mechanical reserves, or relationship with other systems.

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