Lenovo ThinkSystem SD550 V3 User Manual page 172

To avoid potential danger, make sure to read and follow the safety information.
Attention: Read "Installation Guidelines" on page 43
sure that you work safely.
Procedure
Step 1. Make preparations for this task.
a. Power off the node (see
from the node.
Note: If necessary, press the release clip with a flat-head screwdriver to remove an external
network cable from the rear of a 2U node.
b. Remove the node from the chassis (see
carefully lay the node on a flat, static-protective surface, orienting the node with the front
toward you.
Notes:
• When removing the node, note the node tray number and make sure to install the node in
the same tray from which it was removed. Reinstalling the node into a different tray requires
the node to be reconfigured.
• For safety, make sure to hold the node with both hands when lifting the node.
c. Remove the top cover (see
d. If the internal adapter bracket is installed, disconnect all the cables from the internal adapter;
then, remove the internal adapter bracket from the node (see
bracket" on page
e. If the GPU air duct is installed in the node, remove it (see
119).
f. Disconnect all the fan cables from the system board; then, remove the fan cage from the node
(see "Remove the fan cage" on page
g. If necessary for the specific configuration, remove the front air baffle and drive cage assembly
to disconnect the PCIe riser cables from the system board (see
page 83 and
h. If the PCIe riser assembly is installed, remove it from the node and disconnect the PCIe cables
from the system board (see
cable routing" on page
i. Remove the power bus bar (see
Step 2. Disconnect the cables between the power distribution board and system board.
ThinkSystem SD550 V3 User Guide
162
"Power off the node" on page
"Remove the top cover" on page
127).
"Remove the drive cage assembly" on page
"Remove the PCIe riser assembly" on page 146
223).
"Remove the power bus bar" on page
and "Safety inspection checklist" on page 44
53); then, disconnect all external cables
"Remove a node from the chassis" on page
203).
"Remove the GPU air duct" on page
104).
96).
75); then,
"Remove the internal adapter
"Remove the air baffle" on
and "PCIe riser
156).
to make