Contents

Illustrations

Figures

Figure 1.1

Current fluctuation (Typ.) at +5V when power is turned on

1-6

Figure 2.1

Disk drive outerview (the MHJ Series and MHK Series)

2-2

Figure 2.2

Configuration of disk media heads

 

2-3

 

 

 

Figure 2.3

1 drive system configuration

2-4

 

 

 

 

 

Figure 2.4

2 drives configuration

2-4

 

 

 

 

 

 

Figure 3.1

Dimensions (MHJ/MHK series)

3-2

 

 

 

Figure 3.2

Orientation (Sample: MHJ2181AT)

3-4

 

 

Figure 3.3

Mounting frame structure 3-5

 

 

 

 

 

Figure 3.4

Location of breather

3-6

 

 

 

 

 

 

Figure 3.5

Surface temperature measurement points (Sample: MHJ2181AT)

 

3-7

 

 

 

 

 

 

 

 

Figure 3.6

Service area (Sample: MHJ2181AT)

3-8

 

 

Figure 3.7

Connector locations (Sample: MHJ2181AT) 3-9

 

 

Figure 3.8

Cable connections 3-10

 

 

 

 

 

 

Figure 3.9

Power supply connector pins (CN1)

3-11

 

 

Figure 3.10

Jumper location

3-11

 

 

 

 

 

 

Figure 3.11

Factory default setting

3-12

 

 

 

 

 

 

Figure 3.12

Jumper setting of master or slave device

3-12

 

 

Figure 3.13

CSEL setting

3-13

 

 

 

 

 

 

 

Figure 3.14

Example (1) of Cable Select

3-13

 

 

 

 

Figure 3.15

Example (2) of Cable Select

3-14

 

 

 

 

Figure 4.1

Head structure

4-3

 

 

 

 

 

 

 

Figure 4.2

Circuit Configuration

4-5

 

 

 

 

 

 

Figure 4.3

Power-on operation sequence

4-7

 

 

 

 

Figure 4.4

Read/write circuit block diagram

4-11

 

 

 

Figure 4.5

Frequency characteristic of programmable filter 4-12

 

Figure 4.6

Block diagram of servo control circuit

4-14

 

 

Figure 4.7

Physical sector servo configuration on disk surface

4-16

 

Figure 4.8

Servo frame format

4-18

 

 

 

 

 

 

Figure 5.1

Interface signals

5-2

 

 

 

 

 

 

Figure 5.2

Execution example of READ MULTIPLE command

5-20

Figure 5.3

Read Sector(s) command protocol

 

5-80

 

 

xiv

C141-E088-01EN

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Fujitsu MHJ2181AT, MHK2120AT, MHK2090AT, MHK2060AT manual Illustrations, Figures