StorCase Technology S20A120 - Manual (Page 11)

4 Introduction
StorCase Technology, Inc. S20A120 User's Guide - Rev. A01
Figure 3: Receiving Frame Front Panel
Receiving Frame Front Panel
(Figure 3)
• Key Lock/Drive Power Switch- This 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 DE300 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 C.
• Unit ID Number Indicator- This LED displays the physical address of the DE300
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 DE300 (see Figure 9).
• Activity Indicator- A small dot next to the unit ID number illuminates to indicate when
the host computer is accessing the data on the DE300 carrier. This dot will flash
during communication with the host computer.
• Device Spin Down/Up Timer- This timer 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 timer settings.