Remove a power supply unit

Follow the instructions in this section to remove a power supply unit.

About this task

CAUTION

High touch current. Connect to earth before connecting to supply.

S002

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.

S029

DANGER

danger

For -48V dc power supply, electrical current from power cords is hazardous.

To avoid a shock hazard:

• To connect or disconnect -48V dc power cords when you need to remove/install redundancy power supply unit(s).

To Connect:

To Disconnect:

Turn OFF subject dc power source(s) and equipment(s) that are attached to this product. Install the power supply unit(s) into the system housing. Attach dc power cord(s) to the product. Ensure correct polarity of -48 V dc connections: RTN is + and -Vin (typical -48 V) dc is -. Earth ground should be connected very well. Connect dc power cord(s) to subject power source(s). Turn ON all the power source(s).

Disconnect or turn off the subject dc power source(s) (at the breaker panel) before removing the power supply unit(s). Remove the subject dc cord(s) and make sure the wire terminal of power cord(s) is insulated. Unplug the subject power supply unit(s) from the system housing.

S035

CAUTION

Never remove the cover on a power supply or any part that has this label attached. Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician.

在直流输入状态下，若电源供应器插座不支持热插拔功能，请务必不要对设备电源线进行热插拔，此操作可能导致设备损坏及数据丢失。因错误执行热插拔导致的设备故障或损坏，不属于保修范围。

NEVER CONNECT AND DISCONNECT THE POWER SUPPLY CABLE AND EQUIPMENT WHILE YOUR EQUIPMENT IS POWERED ON WITH DC SUPPLY (hot-plugging). Otherwise you may damage the equipment and result in data loss, the damages and losses result from incorrect operation of the equipment will not be covered by the manufacturers’ warranty.

CAUTION

240 V dc input (input range: 180-300 V dc) is supported in Chinese Mainland ONLY. Power supply with 240 V dc input cannot support hot plugging power cord function. Before removing the power supply with dc input, please turn off server or disconnect dc power sources at the breaker panel or by turning off the power source. Then, remove the power cord.

Procedure

1. 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 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.

   • For –48V DC power supply units:

     1. Turn off the server and 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 more than one power supply units, 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 unit until the LED(s) on the firstly replaced power supply unit are lit green. For the location of the power-supply-unit LEDs, refer to Power supply LEDs.
2. Remove the power supply unit.
   Note

   PSU with a release tab is a hot-swap PSU. The color of the release tab does not affect the serviceability of the PSU.

   Figure 1. Removing the power supply unit

   
   
   
   1. Press and hold on the orange release tab.
   2. Grasp the handle and slide the power supply unit out from the server.