Replacing a Power Module (for OceanStor 5500 V5, 5500F V5, 5600 V5, 5600F V5, 5800 V5, or 5800F V5)

Prerequisites

• The spare part is on hand.
• The power module that you want to replace has been located.

You can locate a component in either of the following ways:

• Locating a component based on alarms in DeviceManager: On the Alarms and Events page of DeviceManager, view the help information and determine the ID of the component to be replaced. Then locate the component at your site based on its ID.
• Locating a component based on the status of its Running/Alarm indicator: For details about the indicators on different components, see "Indicator Introduction" of each component in the Product Description specific to your product model and version.

• Before replacing a power module, ensure that the other power module is working properly.
• Check whether connectors of other power modules are securely inserted. Otherwise, connectors of other power modules may become loose during replacement and may be powered off unexpectedly.

Precautions

• Do not touch the connectors of a power module and a power cable.
• Remove and insert a power module with even force. Excessive force may damage the appearance of the power module or cause faults.
• Remove only one power module at a time.
• A power module must be replaced within three minutes. Otherwise, the system heat dissipation is compromised.

Tools and Materials

• ESD wrist strap
• ESD bag
• Labels
• Phillips screwdriver

Procedure

1. Perform a pre-replacement check.
   Check whether there is a redundant power module and whether the Running/Alarm indicator of the redundant power module is steady green, as shown in Figure 7-45 or Figure 7-46. For details about the indicators on different components, see "Indicator Introduction" in the Product Description of the corresponding model.

   Figure 7-45 Running/Alarm indicator on a power module
   

   Figure 7-46 (Optional) Running/Alarm indicator on a power module
   

   You can perform replacement only when a redundant power module exists and the redundant power module is working properly.

2. Wear an ESD wrist strap.
3. Remove the power cable.
   • Remove the AC power cable.
     1. Remove the velcro strap that secures the power cable, as shown in step 1 in Figure 7-47.
        Figure 7-47 Removing the AC power cable
        
     2. Remove the AC power cable, as shown in step 2 in Figure 7-47.
   • Remove the DC power cable (applicable to 1200 W power modules).
     1. Turn off the circuit breaker that connects to the DC power module.
     2. Use a flat-head screwdriver to press the spring in the square hole on the top of the power cable, and remove the cable, as shown in steps 1 and 2 in Figure 7-48.
     3. Use the Phillips screwdriver to remove the screw from the ground hole, and remove the ground cable from the screw, as shown in step 3 in Figure 7-48.
        Figure 7-48 Removing the DC power cable
        
   • Remove the DC power cable (applicable to 2000 W power modules).
     1. Turn off the circuit breaker that connects to the DC power module.
     2. Press the latch on the inner side of the power connector and remove the cable, as shown in steps 1 and 2 in Figure 7-49.
        Figure 7-49 Removing the DC power cable
        
     3. Use the Phillips screwdriver to remove the screw from the ground hole, and remove the ground cable from the screw, as shown in step 3 in Figure 7-50.
        Figure 7-50 Removing the ground cable
        

4. Open the latch on the ejector lever of the power module, hold the ejector lever, and pull out the power module, as shown in Figure 7-51.
   Figure 7-51 Opening the power module latch to pull out the power module
   

   Do not press the yellow-green latch when removing the power module.

5. Put the removed power module into an ESD bag.
6. Take the spare part out of its ESD bag.
7. Pull out the ejector lever of the power module to be installed, insert the power module into the empty slot, and push the power module into the slot as much as possible, as shown in Figure 7-52.
   Figure 7-52 Inserting the power module into the empty slot
   

8. Push the power module inwards using the ejector lever until the power module is completely inserted into the slot, as shown in Figure 7-53.
   Figure 7-53 Pushing the power module inwards using the ejector lever
   

9. Connect the power cables.
   • Connect the AC power cable.
     1. Connect the power cable to the cable port on the AC power module, as shown in step 1 in Figure 7-54.
        Figure 7-54 Connecting the AC power cable
        

     2. Secure the power cable using a velcro strap, as shown in step 2 in Figure 7-54.

   Adjust the position of the velcro strap to ensure that the velcro strap can fasten the AC power cable and the connector of the AC power cable is secure.

   • Connect the DC power cables (applicable to 1200 W power modules).
     1. Connect one end (OT terminal) of the ground cable to the screw removed from the ground hole, install the screw in the ground hole, and tighten the screw, as shown in step 1 in Figure 7-55.
     2. Connect the power cable to the wiring terminal on the power module until the power cable snaps into the spring, as shown in step 2 in Figure 7-55.
        • Connect the OT terminal on the cathode power cable (blue) to the NEG (-) wiring terminal on the power module.
        • Connect the OT terminal on the anode power cable (black) to the RTN (+) wiring terminal on the power module.
        Figure 7-55 Connecting the DC power cable
        
     3. Turn on the circuit breaker that connects to the DC power module.
   • Connect the DC power cables (applicable to 2000 W power modules).
     1. Connect one end (OT terminal) of the ground cable to the screw removed from the ground hole, install the screw in the ground hole, and tighten the screw, as shown in step 1 in Figure 7-56.
     2. Insert one end of the power cable into the matched quick-connect terminal, and use a screwdriver to tighten the two screws on the quick-connect terminal, as shown in steps 2 and 3 in Figure 7-56.

        This step applies to the scenario where a 1200 W DC power module is removed or a 2000 W DC power module is installed.

     3. Insert the quick-connect terminal inserted with the power cable into the cable port on the power module. If you hear a "click" sound, the power cable is properly inserted, as shown in step 4 in Figure 7-56.
     4. Turn on the circuit breaker that connects to the DC power module.
        Figure 7-56 Connecting the DC power cable
        

10. Wait about two minutes and check the status of the Running/Alarm indicator on the power module to determine whether the power module has been successfully installed. Figure 7-57 or Figure 7-58 shows the location of the Running/Alarm indicator.
    • If the indicator is steady green, the power module has been successfully installed.
    • If the indicator is blinking green, the power input is normal but the controller enclosure is powered off.
    • If the indicator is steady yellow or off, the newly installed power module is faulty or the power module slot is faulty.
    Figure 7-57 Running/Alarm indicator on a power module
    
    Figure 7-58 (Optional) Running/Alarm indicator on a power module
    

11. Confirm the replacement.

    After the preceding procedure is complete, check services on the host for storage-related errors. If any storage-related error is reported, contact Huawei technical support.

Follow-up Procedure

After the power module is replaced, label it to facilitate subsequent operations.