StorCase Technology S20A114 - Manual (Page 11)

4 Introduction
StorCase Technology, Inc. S20A114 User's Guide - Rev. A01
Receiving Frame
Key Lock/Drive
Power Switch
0563
2.
Unit ID Number
Indicator
Activity Indicator
Device Spin Down/Up
Timer Switch
Figure 3: Receiving Frame Front Panel
Receiving Frame Front Panel
(Figure 3)
• Key Lock/Drive Power Switch (Figure 3) - Performs three functions. The key
switch assures proper seating of the drive carrier within the receiving frame, turns
power to the drive carrier on and off, and prevents unauthorized removal or
installation of the carrier. For the computer to access data on the disk drive, the key
must be turned counterclockwise to the locked position. The key can be configured
as either fixed or removable as shown in Appendix B.
• Unit ID Number Indicator (Figures 3 & 4) - This LED displays the physical address
of the DE75 device carrier if the carrier is Installed and Locked in the receiving frame
or if the carrier is removed from the receiving frame. If the carrier is Installed but
not Locked in the receiving frame, a "u" will be displayed to indicate an unlocked
condition. The unit ID number is selected by means of the unit ID select switch inside
the receiving frame using a special alignment tool supplied with the DE75 (see Figure
9).
• The Activity Indicator (Figures 3 & 4) - A small dot next to the unit ID number
illuminates to indicate when the host computer is accessing the data on the DE75
carrier. This dot will flash during communication with the host computer.
• Device Spin Down/Up Timer Switch (Figure 3) - This switch controls the length
of time that the activity indicator flashes during device spin down/up, providing a
visual indication of drive activity. Refer to Figure 10 for switch settings.