Lenovo RD120 - ThinkServer - 6447 User Manual page 81

Attention: In a dc power environment, only trained service personnel other than
Lenovo service technicians are authorized to connect or disconnect power to the dc
power supply and to install and remove a dc power supply. See the documentation
that comes with each dc power supply for installation instructions.
1. Read the safety information that begins on page v and "Installation guidelines"
on page 29.
2. Remove the power-supply filler panel from the empty power-supply bay by
pinching the side clip and pulling the power-supply filler panel from the bay.
Save the power-supply filler panel in case you remove the power supply at a
later time.
Important: During normal operation, each power-supply bay must contain either
a power supply or power-supply filler panel for proper cooling.
3. Slide the ac power supply into the bay until the retention latch clicks into place.
4. Remove the server cover and install the five cooling fans that came with the
power-supply (see "Installing a fan" on page 68).
Important: When power supply 1 is installed, the five fans for power supply 1
occupy the rear row only (fans 3, 4, 8, 9, and 10); when both power supplies
are installed, all 10 fans must be installed. See the fan numbers on the
microprocessor air baffle, or see the illustration in "Removing a fan" on page 69.
5. Connect the power cord for the new ac power supply to the power-cord
connector on the power supply.
The following illustration shows the ac power-supply connectors on the back of
the server.
1
Power cord connectors
2
Power supply 2
3
Power supply 1
6. Route the power cord through the power-supply handle and through any cable
clamps on the rear of the server to prevent the power cord from being
accidentally pulled out when you slide the server in and out of the rack.
7. Connect the power cord to a properly grounded electrical outlet.
8. Make sure that the dc power LED and ac power LED on the power supply are
lit, indicating that the power supply is operating correctly.
If you have other optional devices to install or remove, do so now. Otherwise, go to
"Completing the installation" on page 74.
Chapter 2. Installing optional devices
67