A deposition head for automated fiber layup of pre-impregnated fibers on a deposition surface) comprising: - an application roller capable of rotating around a rotation axis carried by the deposition head, the application roller being removable and positioned relative to the head by reference surfaces (625, 626), - pressure means configured to applying an application pressure of the application roller to the deposition surface, - a heating laser capable of heating the pre-impregnated fibers and the deposition surface during automated layup, - an optical device configured for focusing the heating laser to project a laser spot with a power distribution (351, 352) in the laser spot at a working distance, the optical device being connected to the deposition head by an adjustable polyarticulated linkage, configured to adjust a relative position of the optical device with respect to the deposition head, - a pilot laser of reduced power as compared with the heating laser, configured to use the optical device, the deposition head comprising: - an adjustment device adapted to be installed on the deposition head in place of the application roller and positioned in relation to the deposition head by the reference surfaces (625, 626), - a translucent screen configured to receive a projection of the laser spot of the pilot laser by the optical device on a face exposed to the optical device, - the translucent screen being connected to the adjustment device by a pivot link lockable around a pivot axis, - a camera oriented towards a face opposite the exposed face of the translucent screen and configured to acquire an image of the translucent screen, and - a control monitor)891) configured for displaying the image acquired by the camera. - an application roller capable of rotating around a rotation axis carried by the deposition head, the application roller being removable and positioned relative to the head by reference surfaces (625, 626), - pressure means configured to applying an application pressure of the application roller to the deposition surface, - a heating laser capable of heating the pre-impregnated fibers and the deposition surface during automated layup, - an optical device configured for focusing the heating laser to project a laser spot with a power distribution (351, 352) in the laser spot at a working distance, the optical device being connected to the deposition head by an adjustable polyarticulated linkage, configured to adjust a relative position of the optical device with respect to the deposition head, - a pilot laser of reduced power as compared with the heating laser, configured to use the optical device, - an adjustment device adapted to be installed on the deposition head in place of the application roller and positioned in relation to the deposition head by the reference surfaces (625, 626), - a translucent screen configured to receive a projection of the laser spot of the pilot laser by the optical device on a face exposed to the optical device, - a translucent screen configured to receive a projection of the laser spot of the pilot laser by the optical device on a face exposed to the optical device, - the translucent screen being connected to the adjustment device by a pivot link lockable around a pivot axis, - a camera oriented towards a face opposite the exposed face of the translucent screen and configured to acquire an image of the translucent screen, and - a camera oriented towards a face opposite the exposed face of the translucent screen and configured to acquire an image of the translucent screen, and - a control monitor)891) configured for displaying the image acquired by the camera.