At the repair depot - the workshop - Manufacturers often sub-out this work to specialist companies to make repairs on their behalf. The manufacturer concentrates on making new machines & gets a third-party to make repairs. The literature with your machine will (should ideally) explain how you can get the machine serviced. You may think it's going to Fujitsu but it probably isn't. Similarly Fujitsu's help desk will also be run by a third-party organisation. All the manufacturers do this sub-contracting these days
Peccavi, October 2009