StorCase Technology DE75i-A66 - Manual (Page 14)

DE75i-A66 User's Guide - Rev. A00 StorCase Technology Inc.
Installation 7
Figure 5: DE75i-A66 Drive Carrier Circuit Board
The JP3 and JP4 connectors have 3 pins each:
Pin 1 should be connected to the Master signal of the disk drive. This signal indicates
that this is the Master C: drive.
Pin 2 should be connected to the Slave/Slave Present signal of the drive. This signal
indicates whether a Slave D: drive is present or not.
Pin 3 may optionally be connected to the "Active" signal of the drive. This signal
controls the level of the drive activity indicator light on the front panel of the
receiving frame. The receiving frame circuit board is designed to route the
drive's - HOST SLV/ACT signal (drive activity) to the activity indicator light on
the front panel of the DE75i-A66 receiving frame. A connection to Pin 3 should
only be made if the drive does not support this - HOST SLV/ACT signal on Pin
39 of the interface connector (check the documentation that accompanied the
drive and controller).
The appropriate pins on the drive must be connected to JP3 and/or JP4 on the carrier
board. These connections are required to set the Master/Slave configurations of the
installed drive. Figure 5 illustrates the Drive Carrier Circuit Board.