When loaded with the appropriate software, a notebook PC can function as a portable service/maintenance tool that can be used to

• A. Modify network addresses and reset devices.
• B. Run antivirus scans on the BAS.
• C. Change set points and time schedules, or check a controller for proper operation.
• D. Replace the main BAS controller.

Answer: (C)

Using a notebook with the right software lets a technician connect on site to the BAS controller(s) and edit how the system behaves and when it runs. The most practical maintenance tasks are adjusting setpoints—things like the target temperature or pressure that the controller aims to achieve—and changing time schedules so equipment turns on or off at the desired times. It also allows you to quickly verify that the controller and its sensors and actuators are operating correctly, by reading current values and status and performing checks without physically replacing hardware. While you could sometimes alter network addresses or perform resets, those are more about configuration or recovery steps and not the core on-site maintenance work. Replacing the main BAS controller requires new hardware, not a notebook-based adjustment, so it isn’t the typical function of a portable service tool.