In an arrangement allowing remote maintenance of a computer-controlled system to be serviced, in particular a medical system, the maintenance occurs via a spatially independent monitoring system in communication with the system to be serviced. The system to be serviced is, among other things, designed for the processing of access-protected data such as, for example, patient data. Access to the access-protected data by the monitoring ensues exclusively via an authorization unit associated with the system to be serviced.