After repairing or replacing a bad component in a system, what is the recommended action?

After repairing or replacing a bad component in a system, testing the system is a critical action to ensure that the issue has been resolved and the system operates correctly. This step is essential because it verifies that the repair was successful and that the newly installed component functions as intended within the overall system. Additionally, testing can identify any potential side effects the repair might have had on other components or functions, allowing for prompt troubleshooting if further issues arise. This practice helps in maintaining system reliability and performance, ensuring that the repair not only fixes the immediate problem but also supports the overall integrity of the system.