| Removing the Three-Way Power Cable from the 7133| 1 Press and hold down the latch 1, then pull out the plug. Repeat the action for| each plug of the three-way power cable.| 2 If you are removing the power cable completely, remove the screw and washer 3| to release the ground wire 2.| Note: Two ground wires are present, one for each three-way power cable.| 3 If you want to isolate the 7133 from the power source, remove both three-way power| cables.| 4 Attention: Each three-way power cable must be connected to all three| fan-and-power-supply assemblies; otherwise, problems occur if one −48 volt power| source fails.| When installing a three-way power cable, ensure that you connect each plug of the| power cable to a different fan-and-power-supply assembly (see the diagram).Chapter 3. Removal and Replacement Procedures 3-11

IBM 7133 Series Service Manual