2. Turn off the server (see “Turning off the server” on page 22) and remove theperipheral devices cables, excluding the power supply cable. Disconnect allexternal cables from the server.Attention: When you handle static-sensitive devices, take precautions toavoid damage from static electricity. For details about handling these devices,see “Handling static-sensitive devices” on page 37.3. Turn off the circuit breaker(s) for the power supplies.4. If the server is in a rack, at the back of the server, pull back the cablemanagement arm to gain access to the rear of the server and the powersupply.5. Press and hold the orange release tab to the left. Grasp the power supplyhandle and pull the power supply out of the server.FillerpanelPower supplyrelease tabSpacerSpacerrelease tab750-watt -48 volt dcpower supply6. Detach the dc power cable from the power supply.7. If you are not installing a new power supply, reinstall the power supply fillerin the bay.8. Facing the rear of the server, pull the spacer release tab on the power supplyspacer to the right, use your finger to grasp the hole on the side of the spacer,and slide the power supply spacer out of the server.Note: You only need to remove the spacer if you are removing all of the750-watt -48 V to -60 V dc power supplies or 900-watt power supplies fromthe server and installing 1400-watt power supplies.9. Set the power supply spacer aside.10. If you are instructed to return the power supply, follow all packaginginstructions, and use any packaging materials for shipping that are suppliedto you.Replacing a 750-watt -48 volt to -60 volt dc power supplyThis information provides instructions on how to replace a 750-watt -48 volt to -60volt dc power supply.310 System x3750 M4 Types 8722 and 8733: Installation and Service Guide
