Lenovo ThinkSystem SR655 V3 User Manual page 110

• Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static-
sensitive components in their static-protective packages until installation, and handling these devices with
an electrostatic-discharge wrist strap or other grounding system.
Watch the procedure
A video of this procedure is available at YouTube:
BashWCNZQEDP7o3EohXPEV
Procedure
Step 1. If a cable management arm (CMA) is installed, adjust the CMA to gain access to the power supply
bay.
a. Press down the stop bracket
b. Rotate the CMA out of the way to gain access to the power supply unit.
Note: Your CMA kit might look different from the illustration.
Figure 66. Adjusting the CMA
Step 2. Disconnect the power cord from the hot-swap power supply unit and the electrical outlet.
• For AC power supply units, disconnect both ends of the power cord and keep it in an ESD-safe
place.
• For 240 V DC power supply units, turn off the server, and then disconnect both ends of the
power cord and keep it in an ESD-safe place.
Note: If you are replacing two power supplies, replace them one by one to ensure that the power
supply to the server is not interrupted. Do not disconnect the power cord from the secondly
replaced power supply until the power output LED for the firstly replaced power supply unit is lit.
For the location of the power output LED, refer to
Step 3. Press the release tab toward the handle and carefully pull the handle at the same time to slide the
hot-swap power supply unit out of the chassis.
Note: If your CMA kit obstructs in the way, slightly pull the power supply unit upwards when sliding
the power supply unit out of the chassis.
ThinkSystem SR655 V3 User Guide
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https://www.youtube.com/playlist?list=PLYV5R7hVcs-
.
and rotate it to the open position.
1
"Power supply LEDs" on page 207.