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early fault determination
Checklist Before Submitting an RMA Request
Based on prior experience, a short troubleshooting session may reveal the root cause of a failure and prevent redundant shipment of parts.FS provides the below checklists for common issues of our products, and updates the checklists regularly, based on our customers' feedback and our continued experience.
FS provides the below checklists for common issues. You can view it by selecting different product types.
- Fibre Optic Transceiver Checklist
- DAC & AOC Cable Checklist
- Network Interface Card Checklist
- Network Switch Checklist
- Mux Demux & OADM Checklist
- Monitor Online Software Checklist
- FMT Pluggable Module Checklist
- Fibre Optic Patch Lead Checklist
- Fibre Cassette & Enclosure Checklist
Fibre Optic Transceiver Checklist
If the transceiver isn't recognized by the switch or link’s errors, plug and unplug the transceiver again, and make sure that it is correctly inserted into the port of the designated device.
Please perform the following to verify the possible problem:
Check whether the types, data rate, and wavelengths of the transceivers at both ends are identical.
Check whether the data rate, working mode, FEC function, and Auto-negotiation mode of the ports that the transceivers are inserted are identical.
Check whether the fibre optic cables or ethernet patch cables connected match with the transceiver.
Log in to the management interface of the device that the transceiver is connected and check whether there is an error message after the module is inserted.
If there is an error message, it indicates that the transceiver is faulty or is not compatible with the device.
Check the DDM information of the transceiver on the current port. And confirm whether specifications (Eg: voltage, current, temperature, RX power, and TX power) of the transceiver are normal.
Check whether the light of the port that the transceiver is connected is normal. If not, please perform the following:
Please repeat the test after cleaning the TX port of the module and the end face of the fibre cable.
Check if the link loss is within the budget of the transceiver.
Repeat the test after inserting the module into another known working port.
Repeat the test after replacing a known working optical cable.
Repeat the test after replacing other transceivers with the same P/N from the same FS order.