Visual Check: Inspect the button for any signs of physical damage, such as cracks, wear, or fading of labels.
Functionality Test: Test each button to ensure it operates smoothly and responds correctly when pressed. Check for any sticking or inconsistent responsiveness.
Surface Cleaning: Clean the surface of the buttons regularly using a soft, dry cloth to remove dust, fingerprints, and other debris.
Button Surroundings: Clean the area around the buttons to prevent dirt and dust buildup, which can affect their performance.
Maintain a clean and controlled environment around the instrument to minimize exposure to dust and contaminants that could affect button performance.