I’m having some trouble with my network cable installation, what should I do to find out what the exact problem is? What can I start with?
The general manifestations of network cable faults are as follows:
- The RJ45 connector of the network cable becomes loose, resulting in poor contact.
This type of problem is more common, and it is characterized by some indicator lights not lighting up when testing the cable with a cable tester, excluding the possibility of cable breakage.
For this situation, it is necessary to reassemble the problematic RJ45 connector. - The metal contact pins on the RJ45 connector become oxidized or dusty, leading to poor contact.
This situation can be observed by checking if the metal contact pins on the RJ45 connector turn black or accumulate dust. It can also be further tested with a cable tester.
In this case, it is necessary to reassemble the problematic RJ45 connector. - Incorrect RJ45 wiring sequence.
This phenomenon occurs when T568A and T568B are mixed, and it is characterized by the crossed light sequence of the indicator lights at both ends of the cable tester (only for straight-through cables).
The solution is to reassemble the RJ45 connector with the incorrect wiring sequence. - Short circuit in the metal contact pins of the RJ45 connector.
This situation usually occurs with lower-quality RJ45 connectors, manifested by multiple indicator lights flashing simultaneously on the cable tester.
The solution is to reassemble the RJ45 connector. - Some wire cores in the network cable are disconnected.
Detection method: Use a cable tester to determine which cores are not lighting up when excluding problems with the RJ45 connector. The corresponding wire cores may be broken.
The solution is to ensure that there are four cores for a 100Mbps link, and for a 1000Mbps link, rewiring is necessary.
There are many steps to network cable installation. Which step specifically with problems for you?