Fiducials

Figure 5. Library Locating Fiducials

 

Figure 5 shows a B1A or E1A with a single fiducial

. The fiducial is used

by cartridge-handling devices to locate and remember where the tape subsystem device is installed. Do not cover or change the fiducial.

Drive Power

The power switch is located on the back of each device. This toggle switch controls the distribution of ac power to the associated device. Certain subsystem configurations have additional controls for distribution of ac power to the device.

It is recommended that all SCSI ports be taken offline before powering off the drive. See “Services Menu” on page 33.

Indicators and Icons

This section describes the indicators on the 3590.

Chapter 3. Drive Operator Panel and Controls 13

Page 33
Image 33
IBM 3590 manual Fiducials, Drive Power, Indicators and Icons, This section describes the indicators on