NOKIA OLT Issues that can happen
There are a few potential issues that may occur with the NOKIA OLT:
- Rarely, problems may arise right from the outset. When checking the controller board, you should typically see the PWR and A/S LEDs illuminated for normal operation. If the ACO LED remains stuck in the “on” state, it suggests that the OLT’s operating system has become corrupted.
- Another sign of a corrupted operating system is if, during the console terminal startup, the message “Serial driver initialized” persists for longer than 15 minutes or keeps repeating continuously.
- Alternatively, if the FAN LED is consistently lit in red, and you notice a loud noise, this could indicate a defective fan unit. In such cases, you might need to return the entire chassis for replacement or service. It’s also possible that the fan’s airflow is obstructed by a clogged filter. To check this, you can remove the OLT nameplate and inspect the filter or fan unit for blockages.
To address the issue of operational system corruption on the NOKIA OLT and resolve it, follow these steps:
Fixing Operational System Corruption:
- Shutdown and Disconnect: Ensure that the OLT is powered off, and disconnect it from the power source.
- Remove Controller Board: Open the OLT chassis and carefully remove the controller board from the OLT unit.
- Locate Compact Flash: On the controller board, locate the compact flash storage device. It usually appears as a small card or module.
- Obtain a Compact Flash Reader: Acquire a compatible compact flash reader. This reader is essential for reading and writing data to the compact flash.
- Get a “Good Image” File: Obtain a “good image” file with a .imgc extension. This file should be a known, working image of the OLT’s operating system. You can acquire this image through the following methods:
- Request from Nokia: Contact your Nokia channel or reach out to Nokia directly to request the appropriate .imgc file. They should be able to provide you with a verified and working image.
- Burn the Image: Using the compact flash reader, write the “good image” file onto the compact flash. This process effectively replaces the corrupted operating system with a known, functioning one.
- Reinstall Controller Board: Carefully reinstall the controller board back into the OLT unit.
- Power On and Test: Reconnect the OLT to the power source and power it on. The OLT should now boot up with the new, functioning operating system.
Remember that these steps are intended as a general guideline. It’s crucial to follow the specific instructions and procedures provided in your troubleshooting lessons for your NOKIA OLT model to ensure a successful resolution of the operating system corruption issue.
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