Replacing the optical module on the nd2 board

To replace an optical module on the ND2 board, carefully remove the existing module, handle it with ESD protection, and insert the new module until it clicks into place, following proper fiber handling procedures.

Preparation and Safety

Before starting, ensure you:

• Wear an ESD wrist strap or gloves to prevent electrostatic damage to the optical module .
• Check service impact: evaluate whether replacing the module will affect ongoing services .
• Use only Huawei-certified optical modules to maintain transmission reliability .
• Avoid looking directly into the optical port, as laser beams can cause eye damage .

Removing the Existing Optical Module

1. Disconnect the optical fibers: Release the locking clips on the fiber connectors (LC/PC connectors require pressing the latch; MPO connectors release automatically) and gently pull out the fibers .
2. Remove the module: Open the latch on the optical module, hold the handle, and pull it out evenly without excessive force .
3. Store the removed module: Place it in an ESD bag to prevent damage .

Installing the Replacement Module

1. Prepare the new module: Remove it from its ESD bag and take off the dustproof plug .
2. Insert the module: Ensure the latch is fully closed, then insert the module into the port until you hear a click or feel a slight shake, indicating proper seating .
3. Reconnect the fibers: Carefully insert the optical fibers into the new module, ensuring correct labeling and orientation . Cover any unused ports with dust plugs.

Best Practices

• Complete the replacement within 3 minutes to minimize service disruption .
• Avoid repeated or rapid insertion/removal to prevent damage .
• Confirm that the replacement module has the same center wavelength and standards as the original .
• Handle optical fibers gently to avoid damaging the connectors . Following these steps ensures a safe and reliable replacement of the optical module on the ND2 board, maintaining service stability and protecting sensitive components .