7. Route the power cord through the handle and cable tie if any, so that it doesnot accidentally become unplugged.8. Connect the power cord for the new power supply to the power-cord connectoron the power supply.9. Connect the other ends of the dc power cable to the dc power source. Cut thewires to the correct length, but do not cut them shorter than 150 mm (6 inch).If the power source requires ring terminals, you must use a crimping tool toinstall the ring terminals to the power cord wires. The ring terminals must beUL approved and must accommodate the wires that are described in note 89.The minimum nominal thread diameter of a pillar or stud type of terminal mustbe 4 mm; for a screw type of terminal the diameter must be 5.0 mm.10. Turn on the circuit breaker for the dc power source to which the new powersupply is connected.11. Make sure that the green power LEDs on the power supply are lit, indicatingthat the power supply is operating correctly.12. If you are replacing a power supply with one of a different wattage in theserver, apply the new power information label provided over the existing powerinformation label on the server. Power supplies in the server must be with thesame power rating or wattage to ensure that the server will operate correctly.13. If you are adding a power supply to the server, attach the redundant powerinformation label that comes with this option on the server cover near thepower supplies.14. (IBM Business Partners only) Restart the server. Confirm that it starts correctlyand recognizes the newly installed devices, and make sure that no error LEDsare lit.15. (IBM Business Partners only) Complete the additional steps in “Instructions forIBM Business Partners” on page 31.Installing a hot-swap fan assemblyThe server comes standard with four dual-motor hot-swap cooling fans. When thereis one microprocessor installed, install fan 1, 2, 3, and 5 for proper cooling.Attention: To ensure proper operation, replace a failed hot-swap fan within 30seconds.Chapter 2. Installing optional devices 93
