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WD1004-27x - Winchester Disk Controller Boards

Key Features

  • These boards are described below. WD1004-27X Board Figure 1-1 shows the connector locations (J1, J2, J3, J4, and J5) on the WD100427X board and the location of the jumpers (W17 to W22, R23, and W25 to W28). The WD1004-27X board has a connector at J4, which allows the controller to connect power to FileCard® drives and jumpers W17 to W22, which permit selection of additional options. Also the WD1004-27X board can be used as a secondary controller. WD1004A-27X Board Figure 1-2 shows the connector.

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Datasheet Details

Part number WD1004-27x
Manufacturer Western Digital
File Size 88.24 KB
Description Winchester Disk Controller Boards
Datasheet download datasheet WD1004-27x Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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READ THIS FIRST INSTALLATION GUIDE WD1004-27X WD1004A-27X Winchester Disk Controller Boards FEBRUARY 1989 IDENTIFY DRIVE The WD1004-27X and WD1004A-27X boards work with any hard disk drive that has the ST506/412 drive interface and no more than 1024 cylinders and 16 heads. The Seagate 238 hard disk drive unit is such a drive. Look in your drive manual to verify that you have an ST506/412 RLL drive or check with your dealer. Then check the drive manual for the drive parameters, such as those listed in Table 1-1. You'll need this information to select the proper low level format. Table 1-1. WD1004 and WD1004A Default Drive Parameters Formatted Number of Number of Sectors per Capacity Heads Cylinders Track 32MB 4 615 26 This board does not work with RLL drives.