Universal Robots UR3 Service Manual page 78

9. Remove the power connection on the current distributor.
The module is not loose from the controller.
10. Power supplies are located in the rack under the controller module, the two 48V power
supplies are the lower ones in the rack (UR3 and UR5 has one and UR10 has two 48V power
supplies).
Before removing the 48V power supply, label the wires then disconnect them from that
supply.
11. Remove the screws keeping the defective 48V power supply in place from the side of the
rack.
UR3
5. Service and Replacement of Parts
72 Service Manual