Lenovo ThinkSystem SD550 V3 User Manual page 157

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 GPU air duct is installed in the node, remove it (see
119).
e. If the internal adapter bracket is installed and blocks the way of removing the fan cage,
disconnect all the cables from the internal adapter; then, remove the internal adapter bracket
from the node (see
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
Step 2. Remove the PCIe riser assembly from the node.
a. Loosen the captive screw that secures the PCIe riser assembly to the node.
b. Disconnect the PCIe riser power cable from the riser.
c. Carefully hold the PCIe riser assembly by its edges and lift it out of the node.
"Power off the node" on page
"Remove a node from the chassis" on page
"Remove the top cover" on page
"Remove the internal adapter bracket" on page
104).
53); then, disconnect all external cables
203).
"Remove the GPU air duct" on page
127).
.
Chapter 5 Hardware replacement procedures
75); then,
147