A maintenance cart is configured so the maintenance units within the cart can be selectively moved to correspond to a scalable printhead array. The maintenance cart includes a body configured to selectively move along a path to the printhead array, the body having a recess; and a plurality of cleaning modules mounted within the recess, the plurality of cleaning modules being adjustably arranged within the recess to correspond to a plurality of printheads of the printhead array to enable each cleaning module in the plurality of cleaning modules to align with a corresponding printhead of the printhead array in response to the body being moved to the printhead array.