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FUJITSU MPG3XXXAH-E User Manual

Page 11

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C141-E116-01EN

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3.4.2

Cable connector specifications ..............................................................................................3 - 9

3.4.3

Device connection .................................................................................................................3 - 9

3.4.4

Power supply connector (CN1) .............................................................................................3 - 10

3.4.5

System configuration for Ultra DMA....................................................................................3 - 10

3.5

Jumper Settings .....................................................................................................................3 - 13

3.5.1

Location of setting jumpers ...................................................................................................3 - 13

3.5.2

Factory default setting ...........................................................................................................3 - 14

3.5.3

Jumper configuration.............................................................................................................3 - 14

CHAPTER 4

THEORY OF DEVICE OPERATION ...............................................................4 - 1

4.1

Outline...................................................................................................................................4 - 1

4.2

Subassemblies .......................................................................................................................4 - 1

4.2.1

Disk .......................................................................................................................................4 - 1

4.2.2

Head ......................................................................................................................................4 - 2

4.2.3

Spindle ..................................................................................................................................4 - 2

4.2.4

Actuator.................................................................................................................................4 - 3

4.2.5

Air filter.................................................................................................................................4 - 3

4.3

Circuit Configuration.............................................................................................................4 - 4

4.4

Power-on Sequence ...............................................................................................................4 - 6

4.5

Self-calibration ......................................................................................................................4 - 8

4.5.1

Self-calibration contents........................................................................................................4 - 8

4.5.2

Execution timing of self-calibration ......................................................................................4 - 9

4.5.3

Command processing during self-calibration ........................................................................4 - 9

4.6

Read/write Circuit .................................................................................................................4 - 10

4.6.1

Read/write preamplifier (PreAMP) .......................................................................................4 - 10

4.6.2

Write circuit ..........................................................................................................................4 - 10

4.6.3

Read circuit ...........................................................................................................................4 - 11

4.6.4

Synthesizer circuit .................................................................................................................4 - 12

4.7

Servo Control ........................................................................................................................4 - 13

4.7.1

Servo control circuit ..............................................................................................................4 - 13

4.7.2

Data-surface servo format .....................................................................................................4 - 16

4.7.3

Servo frame format................................................................................................................4 - 17

4.7.4

Actuator motor control ..........................................................................................................4 - 18

4.7.5

Spindle motor control............................................................................................................4 - 19