Lenovo ThinkSystem SD550 V3 User Manual page 178

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. To replace the front PHM (processor 1):
• If a flash power module is installed on the front air baffle, disconnect the flash power module
cable and remove the flash power module (see
110).
• Remove the front air baffle (see
e. To replace the rear PHM (processor 2):
1. If the rear air baffle is installed, remove it (see
2. 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
internal adapter bracket" on page
Step 2. Remove the PHM from the system board.
Important:
• Do not touch the contacts on the processor contacts. Contaminants on the processor contacts,
such as oil from your skin, can cause connection failures.
• Keep the processor socket clean from any object to prevent possible damages.
• Do not allow the thermal grease on the processor or heat sink to come in contact with anything.
Contact with any surface can compromise the thermal grease, rendering it ineffective. Thermal
grease can damage components, such as the electrical connectors in the processor socket.
a. Fully loosen the Torx T30 nuts on the PHM in the removal sequence shown on the heat-
sink label.
Important:
• For reference, the torque required for the screws to be fully tightened/removed is 10+/- 2.0
lbf-in, 1.1+/- 0.2 N-m.
ThinkSystem SD550 V3 User Guide
168
"Remove a node from the chassis" on page
"Remove the top cover" on page
"Remove the flash power module" on page
"Remove the air baffle" on page
"Remove the air baffle" on page
127).
75); then,
203).
83).
83).
"Remove the