Table 36 Default Register Values; Table 37 Diagnostic Codes; Register Initialization; Diagnostic And Reset Considerations - Hitachi HDS721050CLA362 Specifications

9.1.1

Register Initialization

Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
Alternate Status
Table 35
Default Register Values
After power on, hard reset, or software reset, the register values are initialized as shown in
Table 36
Diagnostic Codes
The meaning of the Error Register diagnostic codes resulting from power on, hard reset or the Execute Device
Diagnostic command is shown in

Diagnostic and Reset considerations

9.2
In each case of Power on Reset, COMRESET, Soft reset, and EXECUTE DEVICE DIAGNOSTIC command, the
device is diagnosed. And Error register is set as shown in
HITACHI Deskstar & CinemaStar 7K1000.B & Deskstar E7K1000 Hard Disk Drive specification
Register
Code
01h No error Detected
02h Formatter device error
03h Sector buffer error
04h ECC circuitry error
05h Controller microprocessor error
Table 36
.
Default Value
Diagnostic Code
01h
01h
00h
00h
A0h
50h
50h
Description
Table 36
.
55
Table 35
.