Maintenance Manual
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... value and the stable servo control is positioned. The torque varies with the disk drive and the cylinder where the head is realized. 4-8 C141-E293 For sensing, the firmware mixes the disturbance signal to the position signal at factory calibration. The forces are ... read/write operations. 4.5.1 Self-calibration contents (1) Sensing and compensating for stopping head stably. The firmware of the drive measures and stores the force (value of the actuator motor drive current) that compensates torque constant value change and loop gain change is positioned. This makes the ...
... value and the stable servo control is positioned. The torque varies with the disk drive and the cylinder where the head is realized. 4-8 C141-E293 For sensing, the firmware mixes the disturbance signal to the position signal at factory calibration. The forces are ... read/write operations. 4.5.1 Self-calibration contents (1) Sensing and compensating for stopping head stably. The firmware of the drive measures and stores the force (value of the actuator motor drive current) that compensates torque constant value change and loop gain change is positioned. This makes the ...
Maintenance Manual
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...turned. For each sampling timing during head movement to the reference cylinder when the power is applied the heads are digitally controlled by the firmware. Track following control. The MPU feeds the VCM current via the D/A converter and power amplifier to move the head to the reference...by filtering the position difference between the specified target position and the current position for each sampling time, the VCM drive current is digitally executed by the firmware. C141-E293 4-17 When the head arrives at the center of the actuator includes the operation to move the head...
...turned. For each sampling timing during head movement to the reference cylinder when the power is applied the heads are digitally controlled by the firmware. Track following control. The MPU feeds the VCM current via the D/A converter and power amplifier to move the head to the reference...by filtering the position difference between the specified target position and the current position for each sampling time, the VCM drive current is digitally executed by the firmware. C141-E293 4-17 When the head arrives at the center of the actuator includes the operation to move the head...
Maintenance Manual
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... to V-phase), (U-phase to W-phase), and (V-phase to 3) or 5) step depending on the back electromotive force. The SVC detects this order). The firmware operates on the MPU manufactured by itself based on the condition of spindle motor. e) The MPU is waiting for the spindle control; Then, rotation of... circuit is used for a specific period, the MPU resets the SVC and starts from the SVC. The SVC starts a phase switching by Fujitsu. Theory of Device Operation 4.7.5 Spindle motor control Hall-less three-phase twelve-pole motor is used as the spindle motor driver (called SVC ...
... to V-phase), (U-phase to W-phase), and (V-phase to 3) or 5) step depending on the back electromotive force. The SVC detects this order). The firmware operates on the MPU manufactured by itself based on the condition of spindle motor. e) The MPU is waiting for the spindle control; Then, rotation of... circuit is used for a specific period, the MPU resets the SVC and starts from the SVC. The SVC starts a phase switching by Fujitsu. Theory of Device Operation 4.7.5 Spindle motor control Hall-less three-phase twelve-pole motor is used as the spindle motor driver (called SVC ...
Maintenance Manual
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... of Subcommand code 01h and 03h transfer by Subcommand code 07h, reactivates in the device for the update of the rewriting microcode of the device (firmware). After the designation of rewriting by which data is divided into multiple times is also possible simultaneously with the data transfer). (9) DOWNLOAD MICROCODE (X '92') 5.3 Host...
... of Subcommand code 01h and 03h transfer by Subcommand code 07h, reactivates in the device for the update of the rewriting microcode of the device (firmware). After the designation of rewriting by which data is divided into multiple times is also possible simultaneously with the data transfer). (9) DOWNLOAD MICROCODE (X '92') 5.3 Host...
Maintenance Manual
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...from 384 to 511 KB Transfer from 512 to 639 KB Firmware rewriting execution Transfer of 640 KB Firmware rewriting execution Transfer of 640 KB and Firmware rewriting execution Transfer of 128 KB (0 to 127 KB) ...Transfer from 384 to 511 KB Transfer from 512 to 639 KB and Firmware rewriting execution The Aborted Command error is reported if any of the following conditions is satisfied: ...transferred microcode data is incorrect, firmware rewriting is specified before microcode data is transferred, or the DOWNLOAD MICROCODE command is not...
...from 384 to 511 KB Transfer from 512 to 639 KB Firmware rewriting execution Transfer of 640 KB Firmware rewriting execution Transfer of 640 KB and Firmware rewriting execution Transfer of 128 KB (0 to 127 KB) ...Transfer from 384 to 511 KB Transfer from 512 to 639 KB and Firmware rewriting execution The Aborted Command error is reported if any of the following conditions is satisfied: ...transferred microcode data is incorrect, firmware rewriting is specified before microcode data is transferred, or the DOWNLOAD MICROCODE command is not...
Maintenance Manual
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Set by READ/WRITE MULTIPLE command *8 Total number of user addressable sectors (28bit LBA mode only) C141-E293 5-105 Buffer Size=8MBytes: X '4000' Reserved Firmware revision (ASCII code, 8 characters, left) Model name (ASCII code, 40 characters, left) Maximum number of sectors per block on READ/WRITE MULTIPLE command Reserved Capabilities *4 ...
Set by READ/WRITE MULTIPLE command *8 Total number of user addressable sectors (28bit LBA mode only) C141-E293 5-105 Buffer Size=8MBytes: X '4000' Reserved Firmware revision (ASCII code, 8 characters, left) Model name (ASCII code, 40 characters, left) Maximum number of sectors per block on READ/WRITE MULTIPLE command Reserved Capabilities *4 ...
Maintenance Manual
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It is a single alphabetic character followed by a single alphanumeric character. Disk drive revision number Firmware code/revision Figure 7.1 Disk drive revision number label 7-6 C141-E293 Maintenance and Diagnosis 7.1.4 Disk drive revision number The disk drive revision number is stuck on the DE and marked on the revision number label. Figure 7.1 shows the disk drive revision number label format.
It is a single alphabetic character followed by a single alphanumeric character. Disk drive revision number Firmware code/revision Figure 7.1 Disk drive revision number label 7-6 C141-E293 Maintenance and Diagnosis 7.1.4 Disk drive revision number The disk drive revision number is stuck on the DE and marked on the revision number label. Figure 7.1 shows the disk drive revision number label format.
Maintenance Manual
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...delivered A2 Revision Revision number change in the field A3 Revision Figure 7.2 Display of revision number after delivery, Fujitsu issues a "Change Request/Notice" and the disk drive revision number after the change in the field When a part is replaced in the field or other modifications ... indicated by crossing out the relevant number in the relevant alphabetic character row using = marks (see Figure 7.2). (3) Firmware code and revision First 4-digit indicates a firmware code and rest 4-digit indicates its revision. The level is indicated by crossing out up to the relevant number in...
...delivered A2 Revision Revision number change in the field A3 Revision Figure 7.2 Display of revision number after delivery, Fujitsu issues a "Change Request/Notice" and the disk drive revision number after the change in the field When a part is replaced in the field or other modifications ... indicated by crossing out the relevant number in the relevant alphabetic character row using = marks (see Figure 7.2). (3) Firmware code and revision First 4-digit indicates a firmware code and rest 4-digit indicates its revision. The level is indicated by crossing out up to the relevant number in...
