Lenovo ThinkServer RD120 - Removing the Power Backplane

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. See the documentation that comes with each dc power
supply.
Removing the power backplane
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. See the documentation that comes with each dc power supply.
To remove the power backplane, complete the following steps.
1 Power backplane connector
1. Read the safety information that begins on page vii and “Installation guidelines”
on page 53.
2. Turn off the server and peripheral devices, and disconnect the power cord and
all external cables.
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. See the documentation that comes with each dc power
supply.
3. Remove the cover (see “Removing the cover” on page 56).
4. Remove the power supplies from the power-supply bays (see “Removing a
hot-swap power supply” on page 93).
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. See the documentation that comes with each dc power
supply.
5. Remove the cover (see “Removing the cover” on page 56).
6. Remove the fan-bracket assembly (see “Removing the fan-bracket assembly”
on page 60).
7. Grasp the power backplane and slide it toward the right side of the server.
8. Disconnect the power cable from the hard disk drive backplane.
9. Lift the power backplane out of the server.
104 ThinkServer RD120 server Machine Types 6444, 6445, 6446, and 6447: Hardware Maintenance Manual