FUJITSU MHW2060AC - Manual (Page 105)

5.3 Host Commands
Note: The device responds to this command with the result of power-on
diagnostic test.
At command issuance (I/O registers setting contents)
1F7
H
(CM) 1 0 0 1 0 0 0 0
1F6
H
(DH) x x x DV Head No. /LBA [MSB]
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(FR)
xx
xx
xx
xx
xx
At command completion (I/O registers contents to be read)
1F7
H
(ST) Status information
1F6
H
(DH) x x x DV Head No. /LBA [MSB]
1F5
H
(CH)
1F4
H
(CL)
1F3
H
(SN)
1F2
H
(SC)
1F1
H
(ER)
xx
xx
01
H
01
H
Diagnostic code
C141-E258 5-29