The scope of maintenance refers to the specific tasks and procedures that are performed on each equipment component. These may vary depending on the type of maintenance, the equipment condition, and the maintenance objectives. However, some common tasks include cleaning, lubricating, tightening, adjusting, calibrating, replacing, testing, and documenting. For example, cleaning may involve removing dust, dirt, and debris from equipment surfaces, contacts, and terminals. Lubricating may involve applying grease or oil to moving parts, such as bearings, gears, and switches. Tightening may involve checking and securing bolts, nuts, and screws. Adjusting may involve aligning and positioning equipment parts, such as contacts, springs, and relays. Calibrating may involve verifying and setting the accuracy and sensitivity of equipment parameters, such as voltage, current, and frequency. Replacing may involve swapping worn or damaged parts, such as fuses, filters, and seals. Testing may involve measuring and evaluating the electrical and mechanical characteristics of equipment, such as resistance, insulation, continuity, and functionality. Documenting may involve recording and reporting the maintenance activities, results, and recommendations.