What's the matter with the light signal not coming on?

php Xiaobian Yuzai is here to reveal the secret to everyone: There may be many reasons why the light signal does not light up. The most common reasons are a broken signal light bulb or a faulty circuit. When the bulb burns out or the circuit is damaged, the signal light cannot light up properly. Other possible causes include power supply problems, controller failure, signal poles being struck, etc. If the signal light does not light up, we should promptly report for repair or contact the relevant departments to solve the problem to ensure the safety and smoothness of road traffic.

Why is the optical signal light not on?

1. Optical fiber pigtail problem: It may be because the optical fiber pigtail is not plugged in tightly. Here we Re-insert the optical fiber pigtail connector;

2. Optical modem interface problem: It may be because there is a problem with the optical modem optical interface. Here we need to replace the optical modem;

3. Broadband arrears : It may be that the broadband used by the user is in arrears, and here we need to pay in time;

4. Router problem: The router may be damaged, and here we need to replace it with a new router;

5. Signal light problem: It may be because the light signal light is broken, we can replace it with a new router;

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