Lenovo ThinkSystem ST550 7X09, Maintenance Manual

Page: 177 / 220

Important: Before you return the system board, make sure that you install the CPU socket dust covers from
the new system board. To replace a CPU socket dust cover:
1. Take a dust cover from the CPU socket assembly on the new system board and orient it correctly above
the CPU socket assembly on the removed system board.
2. Gently press down the dust cover legs to the CPU socket assembly, pressing on the edges to avoid
damage to the socket pins. You might hear a click on the dust cover is securely attached.
3. Make sure that the dust cover is securely attached to the CPU socket assembly.
S017
CAUTION:
Hazardous moving fan blades nearby.
S012
CAUTION:
Hot surface nearby.
Remove the system board
Use this information to remove the system board.
“ Read the
installation
Guidelines” on
page 59
“ Power off
the server
for this task”
on page 12
“ ATTENTION:
Static Sensitive Device
Ground package before opening”
on page 60
Before removing the system board:
1. If the server is installed in a rack, extend the server from the rack.
2. Remove the server cover. See “Remove the server cover” on page 68.
3. Record where the cables are connected to the system board; then, disconnect all the cables.
Attention: Disengage all latches, cable clips, release tabs, or locks on cable connectors beforehand.
Failing to release them before removing the cables will damage the cable connectors on the system
board. Any damage to the cable connectors may require replacing the system board.
4. Remove any of the following components that are installed on the system board and put them in a safe,
static-protective place. See the related topics in Chapter 3 “Hardware replacement procedures” on page
59.
• System fans
• DIMMs
• PCIe adapters
Chapter 3
.
Hardware replacement procedures
169