What to do if the crystal head has poor contact
In network connections, poor contact of the crystal head (RJ45 interface) is one of the common problems, which may lead to network instability, reduced network speed, or even complete disconnection. This article will analyze the reasons and provide solutions, and also attaches the hot topics and hot content on the entire network in the past 10 days for readers' reference.
1. Reasons for poor contact of the crystal head
Poor contact of the crystal head is usually caused by the following reasons:
| Reason | Description |
|---|---|
| Oxidation or dirt | After long-term use, metal contacts may be oxidized or contaminated with dust |
| Wire sequence error | The line sequence is incorrect when making the crystal head |
| Crimping is not firm | The crimping tool does not fully press the metal piece into the wire core |
| physical damage | The crystal head or network cable is damaged by bending or pulling. |
2. Solution
For different reasons, the following measures can be taken:
| Question type | solution |
|---|---|
| Oxidation or dirt | Use absolute alcohol to clean the contacts, or replace the crystal head |
| Wire sequence error | Remade according to T568A or T568B standards |
| Crimping is not firm | Use professional crimping pliers to re-crimp |
| physical damage | Replace the crystal head or the entire network cable |
3. Preventive measures
In order to avoid poor contact of the crystal head, it is recommended:
1. Choose quality crystal heads and network cables
2. Make sure the wiring sequence is correct and the crimping is firm during production.
3. Avoid frequent plugging and unplugging and excessive bending
4. Check network connection status regularly
4. Hot topics on the Internet in the past 10 days
The following is the hot content that has attracted much attention across the Internet in the past 10 days:
| Ranking | topic | heat index |
|---|---|---|
| 1 | New breakthroughs in AI technology | 9.8 |
| 2 | World Cup Match Analysis | 9.5 |
| 3 | New energy vehicle subsidy policy | 9.2 |
| 4 | Development status of the Metaverse | 8.9 |
| 5 | New measures for epidemic prevention and control | 8.7 |
5. Recommendation of professional tools
When dealing with crystal head issues, the following tools can help:
| Tool name | Purpose |
|---|---|
| Network line tester | Detect network cable continuity and line sequence |
| RJ45 crimping pliers | Professionally made crystal heads |
| wire stripper | Precisely remove the sheath of network cables |
6. Common Misunderstandings
When solving crystal head problems, you need to avoid the following misunderstandings:
1. I think you can make a crystal head with ordinary scissors (professional crimping pliers are required)
2. Ignore the line sequence standards and arrange them randomly (must follow T568A/B)
3. Over-reliance on temporary fixes (such as taping)
4. Ignore the impact of network cable quality on transmission
Summary:Although poor contact of the crystal head is common, it can be effectively solved with the correct methods and tools. Regular maintenance of network equipment and the use of high-quality materials can greatly reduce the occurrence of such problems. At the same time, understanding the hot spots across the entire network will help you grasp technology development trends and better maintain network equipment.
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