Requirements for quality printed matter are constantly increasing, delivery deadlines of finished products are shortened, so it is necessary to ensure a constant in providing digital prints of good quality and quickly. This means that the digital printing machine, as the basic and most important tool for the operation of a digital printing press, must be reliable in order to fulfil tasks imposed upon it with more efficiency and high quality. As digital printing has set high standards for quality prints on a wide range of printing surfaces, even a small deviation from the planned is a problem and considered a bad print. It is because of all the abovementioned reasons that the production system complete maintenance model is a imperative, as this kind of maintenance offers users a high level of reliability, quality and fast print, availability of supplies, spare parts and repair services in a very short time, and printing cost predictability from beginning to end. This work researches maintenance occurrence on machines observed through service interventions. It will present the functional load of machines through the display of the number of prints made, and the ratio between service interventions and quantity of prints made, as well as the relationship between the number of service interventions and the age of the machine. The aim of this paper is to present how important maintenance is for the machine itself, that is, for the digital printing press.