What action should be taken if splitting the train electrically to troubleshoot power issues?

When troubleshooting power issues by splitting the train electrically, retrieving the electrical portion is a critical action to ensure that the technicians can analyze and address the source of the problem effectively. By focusing on the electrical systems directly, it allows for a thorough examination of the train’s power distribution and connections.

Retrieving the electrical portion involves isolating it from other systems to minimize distractions and potential complications that may arise from concurrent operations. This step is crucial in identifying whether the issue is localized within the train's electrical architecture or if it is part of a broader systemic failure. Once the electrical components are retrieved, technicians can conduct more precise tests and measurements to determine the fault's nature and location.

Contacting maintenance, checking both ends for power, or attempting to reroute power may become necessary actions after the electrical portion is addressed, but they do not provide the targeted analysis needed for troubleshooting the power issues. Thus, focusing on the electrical segment helps streamline the diagnostic process and leads to faster resolution of the issue.