Lenovo NeXtScale n1200 Installation And Service Manual page 59

Step 6. Grasp the handle on the rear of the power supply and slide the power supply forward into the
power-supply bay until it clicks. Make sure that the power supply connects firmly into the power-
supply connector.
Figure 31. Power supply installation
Step 7. Route the power cord through the handle and cable tie if any, so that it does not accidentally
become unplugged.
Step 8. Connect the other ends of the DC power cable to the DC power source. Cut the wires 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 to install the ring terminals to the power cord wires. The
ring terminals must be UL approved and must accommodate the wires that are described in
Regulations. The minimum nominal thread diameter of a pillar or stud type of terminal must be 4
mm; for a screw type of terminal the diameter must be 5.0 mm.
Step 9. Attach the ferrite clamp core nearly to power supply with all input cables including the -48V, the
-48V RTN, and the ground cable.
Step 10. Turn on the circuit breaker for the DC power source to which the new power supply is connected.
Step 11. Make sure that the green power LEDs on the power supply are lit, indicating that the power supply
is operating correctly.
Step 12. If you are adding a power supply to the server, attach the redundant power information label that
comes with this option on the server cover near the power supplies.
Power supply
.
Chapter 4 Removing and replacing components
47