1. Consider the structural requirements of the whole machine when positioning components that require frequent adjustment or replacement such as potentiometers, adjustable inductance coils, variable capacitor micro switches, fuses, buttons, and plug-ins.

2. Place components in positions for easy adjustment and replacement. If adjusted inside the machine, position them on the printed circuit board for easy access. If adjusted outside the machine, adapt their position to the adjustment knobs on the chassis panel to avoid conflicts between three-dimensional and two-dimensional spaces.

3. Ensure that panel openings of switches and vacant positions on the printed circuit board match and provide fixing holes near terminals, plug-in parts, and other areas subjected to force, allowing space for thermal expansion.

4. For components with large tolerances and low precision in volume, add margins based on the original interval setting. Recommended margins for specific components include not less than 1mm for electrolytic capacitors and not less than 3mm for transformers, radiators, and resistors exceeding 5W.

5. Maintain a minimum distance of 10mm between electrolytic capacitors and heating components and 20mm between other components and radiators to prevent interference and thermal issues.

6. Avoid placing stress-sensitive components in high-stress areas of the printed circuit board and ensure that component layout meets reflow soldering and wave soldering spacing requirements to reduce shadowing effects during soldering.

7. Reserve positioning holes and brackets on the printed circuit board and leave a 5~10mm wide gap in large-area printed circuit boards to prevent bending during the soldering process.