Is it true that after a system board replacement, a field technician can input the service tag value only once?

After a system board replacement, it is indeed true that a field technician can input the service tag value only once. This is a procedure designed to ensure that each system board is uniquely identified and registered with its specific service tag. Inputting the service tag only once helps to maintain the integrity of the device's warranty and support history. It also prevents any potential conflicts or errors that could arise from multiple entries of the same value.

Once the service tag is established on the new system board, the system is expected to recognize and retain this information without requiring re-entry for the same component. This helps streamline the replacement process and supports efficient record-keeping.

In summary, the design and functionality of the system board replacement procedure emphasize that the service tag is a critical identification component, and limiting input to a single instance contributes to operational consistency and reliability.