When there is an equipment problem, the speed of resolution often depends on how the first caller describes the problem. This article sorts out the standard path for after-sales response in three sections: demarcation, failure reporting, and repair. Readers can prepare directly according to the order.

First define the boundaries: divide the faults into three categories

• Selection type: low receiving power or overload, rate mismatch, single fiber A/B end and wavelength pairing error, these types account for the majority of inquiries;
• Link type: end face contamination, bending radius exceeding the standard, welding loss being too large, manifested as light receiving changes with weather or jitter;
• Device type: single module orGigabit single mode single fiber one optical one electrical fiber optic transceiverPort abnormality, DDM reading distortion.

It is not difficult to collect the basis for delimitation: DDM transceiver and optical readings, switch port logs, peer device models and code patterns. If these three are collected, most problems can be determined on the spot.

Elements for reporting a failure: one sentence, a table, and a photo

One sentence describes the symptom (which link, when it started, what phenomenon), a port correspondence table (local and remote device models, module slots), and a photo of the nameplate and batch number. EB-LINK's technical support is accepted here and will respond on working days, providing remote guidance, on-site parts replacement or repair suggestions. Telephone communication is also available outside the technical support channel.

Repair and improvement: batch number is the clue

• Send the faulty parts back together with the anti-static bag and batch number label to avoid disconnection of secondary inspection records;
• Multiple failures in the same batch will trigger a review of factory records and compare the test data of the current batch;
• When customizing code-writing devices, first check whether the on-site equipment is consistent with the code pattern to prevent misjudgment as a bad part;
• After repair or replacement, test records will be attached to the order and the ledger will be closed.

The after-sales system is not an isolated link: factory test records, batch traceability and code library versions jointly determine the demarcation speed. Network card driver and compatibility information can be found atKnowledge article areaFor inquiries, if you have any questions, please call 0755-83179002 on working days.