The camera's field of view and focus will be checked and adjusted if required. The interior casing of the camera will also be inspected. The technician will make sure that the casing of the CCTV camera is dry clean. Moreover, the technician will also check camera functionalities including pan and tilt, focus, and zoom. Routine CCTV maintenance involves checking the wiring and cables. System technicians will check the wiring for any damage. They will make sure that the wiring insulation is in good condition. An experienced CCTV technician will also check the CCTV camera and enclosure. The technician will inspect the camera lens inside and out. The camera’s field of view and focus will be checked and adjusted if required.