Lenovo ThinkSystem ST250 V2 Maintenance Manual page 128

CAUTION:
To avoid personal injury, disconnect the fan cables before removing the fan from the device.
• S017
CAUTION:
Hazardous moving fan blades nearby. Keep fingers and other body parts away.
• S033
CAUTION:
Hazardous energy present. Voltages with hazardous energy might cause heating when shorted
with metal, which might result in spattered metal, burns, or both.
Attention:
• Read the "Installation guidelines" on page 85 to ensure that you work safely.
• Turn off the server and peripheral devices, and disconnect the power cords and all external cables (see
"Power off the server" on page 13).
• If the server is in a rack, remove it from the rack.
• Remove any locking device that secures the server cover, such as a Kensington lock or a pad lock.
Watch the procedure
A video of this procedure is available at YouTube:
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Procedure
Step 1. Remove the server cover (see "Remove the server cover" on page 199).
Step 2. Disconnect the fan cable from the system board (see "System-board components" on page 27).
Step 3. Remove the rear system fan from the chassis.
a. Press the two tabs of the rear system fan towards each other.
b. Carefully slide the fan out of the chassis.
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https://youtube.com/playlist?list=PLYV5R7hVcs-
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