Where must an operator access to choose a Mainframe in the S6000?

An operator must access the TC Icon and then select the appropriate option to choose a Mainframe in the S6000 system. The TC Icon serves as the primary interface through which various settings and configurations can be navigated. By selecting this icon, the operator is presented with a streamlined approach to accessing different features, including the selection of Mainframes, which are essential for the operation and optimization of the system.

In contrast, the other options point to different parts of the interface or workflow that do not directly facilitate the selection of a Mainframe. Accessing the library or bank, for example, pertains more to managing presets or audio files rather than choosing a Mainframe. Navigating through the Frame system hierarchy may provide other options but is less direct for selecting a Mainframe. Similarly, the E1, E2, E3, and E4 options refer to specific processes or features rather than the overall selection of a Mainframe in the context of S6000 operation.