Replacing an Optical Module

Impact on the System

Replacing an optical module will cause service interruption. If any other host paths are available, replacing an optical module will not affect services.

Prerequisites

• A spare part is on hand.
• You have located the interface module that houses the optical module you want to replace.

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.

Precautions

• Remove and insert an optical module with even force. Excessive force may damage the appearance or connectors of the optical module.
• Do not frequently or quickly remove or insert an optical module; otherwise, it may be damaged.

Tools and Materials

• ESD wrist strap
• ESD bag
• Labels

Procedure

1. Check status before replacement.
   1. Check system status.

      Start SmartKit and choose Routine Maintenance > Health Check. On the Health Check page, perform inspection as instructed. For details, see Checking System Status.

      If any items fail the inspection, rectify the faults by performing the recommended actions in the inspection reports. Ensure that all other parts except the parts to be replaced are working properly.

   2. Check the status of the parts to be replaced.

      Start SmartKit and choose Parts Replacement > Parts Replacement. On the Parts Replacement page, click FRU Replacement. Then complete the check before the replacement as prompted. For details, see Replacing an FRU.

      You can proceed to next steps only when all items pass the pre-replacement check and the replacement page is displayed. If any item fails, rectify the fault as prompted.

2. Wear an ESD wrist strap.
3. Remove the optical fibers connected to the optical module to be replaced.

   Do not look into the optical port without eye protection. The laser beam on the optical interface board or from the fiber may cause injuries to eyes.

4. Open the latch of the optical module, and pull out the optical module, as shown in Figure 5-111.
   Figure 5-111 Removing an optical module
   

5. Put the removed optical module into an ESD bag.
6. Take the spare part out of its ESD bag.
7. Remove the protective cap from the optical module, and insert the optical module into the port, as shown in Figure 5-112.
   • Before inserting an optical module, ensure that its latches are completely closed.
   • Insert the optical module to the enclosure until you hear a "click" sound or feel a slight vibration, which indicates that the optical module is in place.
   • If the optical module is not inserted properly, it will fall out or will cause a link fault.
   Figure 5-112 Installing an optical module
   

8. Insert the optical fibers into the optical module.

   Do not look into the optical port without eye protection. The laser beam on the optical interface board or from the fiber may cause injuries to eyes.

   Insert the optical fibers until they snap into place.

9. Observe the port indicator to check whether the optical module has been properly installed.
   • If the indicator is steady green or blue, the installation is successful.
   • If the indicator is steady red or off, the newly installed optical module is faulty, the slot for the optical module is faulty, or the optical module is incorrectly installed.

10. Confirm the replacement.
    1. Perform a post-replacement inspection.

       After the parts replacement, return to the SmartKit page and click Replaced. Then complete the parts check after the replacement as prompted.

    2. Check system status.

       On the Parts Replacement page, click Inspection to check the system status again. If any item fails inspection, rectify the fault based on the suggestions in the inspection report.

    3. After the preceding procedure is complete, check services on the host for storage-related errors.

Follow-up Procedure

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