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C141-E116-01ENx
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