For more information on 3490E controls and indicators, see IBM 3490E Tape
Subsystem Models F00, F01, F1A, and F11 Installation, Planning, and Operator's
Guide.
Figure 26. 3490E Controls and Indicators for Model F1A
3590 Model B1A Tape Subsystem Controls
The 3590 Model B1A operator panel 1 (see Figure 27 on page 38) is accessible
to the operator by opening the front door of the frame containing the tape
subsystem to be accessed.
37
Chapter 2. Controls and Indicators