Lenovo ThinkSystem SR645 V3 User Manual page 153

CAUTION:
The power-control button on the device and the power switch on the power supply do not turn off the
electrical current supplied to the device. The device also might have more than one power cord. To
remove all electrical current from the device, ensure that all power cords are disconnected from the
power source.
Watch the procedure
A video of this procedure is available at YouTube:
CTkyVDu-5Lhy1r9G-4PQGl
Procedure
Step 1. Make preparation for this task.
a. Record all system configuration information, such as Lenovo XClarity Controller IP addresses,
vital product data, and the machine type, model number, serial number, Universally Unique
Identifier, and asset tag of the server.
b. Save the system configuration to an external device with Lenovo XClarity Essentials.
c. Save the system event log to external media.
d. Power off the server and peripheral devices and disconnect the power cords and all external
cables. See
e. If the server is installed in a rack, slide the server out on its rack slide rails to gain access to the
top cover, or remove the server from the rack.
f. Remove the top cover. See
g. If your server has an CFF adapter or a RAID flash power module installed on the front of the
chassis, remove it first.
• "Remove the internal CFF HBA/RAID adapter" on page 71
• "Remove the RAID flash power module on the chassis" on page 118
h. Record where the cables are connected to the system board (system board assembly); then,
disconnect all the cables.
i. Remove any of the following components that are installed on the system board (system board
assembly) and put them in a safe, static-protective place.
• "Remove a system fan" on page 131
• "Remove a memory module" on page 78
• "Processor and heat sink replacement (trained technician only)" on page 107
• "Remove the CMOS battery" on page 54
• "Remove a riser card" on page 122
• "Remove the OCP module" on page 89
j. Pull out the power supplies slightly. Ensure that they are disconnected from the system board
(system board assembly).
.
"Power off the server" on page
"Remove the top cover" on page
https://www.youtube.com/playlist?list=PLYV5R7hVcs-
44.
150.
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Chapter 5 Hardware replacement procedures
143