Lenovo ThinkSystem SR630 Maintenance Manual page 144

Step 1. If the server is in a rack, adjust the cable management arm (CMA) to gain access to the power
supply bay.
Figure 72. CMA adjustment
1. Press down the stop bracket
2. Rotate the CMA out of the way to gain access to the power supply.
Step 2. Disconnect the power cord from the hot-swap power supply.
• For 240 V DC power supply units, turn off the server, then, disconnect both ends of the power
cord and keep it in an ESD-safe place.
• For AC power supply units, disconnect both ends of the power cord and keep it in an ESD-safe
place.
• For –48V DC power supply units:
1. Disconnect the power cords from the electrical outlet.
2. Use a slotted screwdriver to loosen the captive screws on the power supply terminal block.
3. Disconnect the power cords from the power supply unit, make the wire terminal insulated,
and keep them 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 is lit. For the
location of the power output LED, refer to "Rear view LEDs" on page 43.
ThinkSystem SR630 V2 Maintenance Manual
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and rotate it to the open position.
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