The Diagnostic SOP Checklist recommends performing a visual inspection as the first step.

• A. True
• B. False
• C. Depends on the issue
• D. Never

Answer: (A)

Starting with a visual inspection is essential because it lets you quickly observe the system’s condition and spot obvious hazards, damage, or misalignments before you touch anything. This initial scan provides important context—like loose connections, leaks, corrosion, worn parts, or missing components—that guides the rest of the diagnostic process and helps prevent misdiagnosis or injury. In the Diagnostic SOP Checklist, you begin with this visual check to establish a safe, informed baseline before proceeding with any tools, measurements, or tests. Skipping it could mean you miss a readily visible fault or mistake, and pursuing deeper testing without seeing what’s plainly wrong can waste time or create new problems. Saying it’s only needed for certain issues or never would contradict the standard procedure, which is to perform the visual inspection first as the default starting point.