Operation Confirmation; Operation Test; Table 1.1 Status Register Contents; Table 1.2 Disposition For Error Register Contents - Fujitsu MHU2100AT Maintenance Manual

Maintenance and Diagnosis
bit
BIT0=1
BIT1, 2
BIT3=1
BIT4=1
BIT5=1 Any of these
cases.
BIT6=0
BIT7=1

Table 1.2 Disposition for error register contents

Error bit
BIT0
BIT1 Any of these
bits are "1".
BIT4
BIT6
BIT2
Any of these
bits are "1".
BIT7
1.2

Operation 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.
1-10

Table 1.1 Status register contents

Shown in Table 1.2
It is not necessary to take any measure when other bits are
normal, in spite of these bits. (Normal)
(1) Check whether vibration is transmitted because of the way
the disk drive is mounted.
(2) Check the power, cable, and connector.
(3) If it is concluded that the disk drive is the cause, replace the
disk drive.
Method of disposition
If it is concluded that the disk drive is the cause, replace the
drive.
(1) Check the status of the host, cable, and drive.
(2) If it is concluded that the disk drive is the cause,
replace the drive.
Contents
C141-F067-01EN