A fiber optic transceiver is an Ethernet transmission media conversion unit that exchanges short-distance twisted-pair electrical signals and long-distance optical signals, and is also called a photoelectric converter in many places.
1. Symptom: The transceiver indicator is off
Solution: Use a multimeter DC voltage file to measure the output of the AC/DC power transformer. See if the voltage is normal. If there is no output voltage, use a multimeter's resistance file to measure whether the transformer primary is open, such as open circuit, replace the power transformer.
2. Failure phenomenon: POWER light is on, RX light and LINK light are off
Solution: This symptom indicates that there is a problem with the optical path. Remove the fiber head and place it in a dark place. Observe if the opposite light is coming. If not, replace the opposite transceiver. If there is red light, observe whether the transmitting end of the fiber optic transceiver has red light and how strong or weak it is. If no light or weak, replace the transceiver.
3. Symptom: UTP RX and LINK lights are not on
Solution: This symptom is a problem with the output. Use a line finder to measure the twisted pair of the switch. If it is normal, it may only be a problem with the fiber transceiver. Look carefully at the fiber optic transceiver. There is a straight-through switch. Use a small screwdriver to repeatedly pluck the switch. The RX light and LINK light are on and the output is normal. This fault is caused by dust entering the switch.
4. Symptoms: The indicators are all normal and the network is slow
Solution: Use a laptop computer to access the UTP port of the fiber transceiver, enter Windows 98, click "Start" * "Run", enter the "PingXXX-T" command (XXX is the home page's IP address), you can find breakpoints. Replace the fiber transceiver. At this time, execute the ping command again. If you still find a breakpoint, you need to replace the fiber transceiver on the other end.
1. Symptom: The transceiver indicator is off
Solution: Use a multimeter DC voltage file to measure the output of the AC/DC power transformer. See if the voltage is normal. If there is no output voltage, use a multimeter's resistance file to measure whether the transformer primary is open, such as open circuit, replace the power transformer.
2. Failure phenomenon: POWER light is on, RX light and LINK light are off
Solution: This symptom indicates that there is a problem with the optical path. Remove the fiber head and place it in a dark place. Observe if the opposite light is coming. If not, replace the opposite transceiver. If there is red light, observe whether the transmitting end of the fiber optic transceiver has red light and how strong or weak it is. If no light or weak, replace the transceiver.
3. Symptom: UTP RX and LINK lights are not on
Solution: This symptom is a problem with the output. Use a line finder to measure the twisted pair of the switch. If it is normal, it may only be a problem with the fiber transceiver. Look carefully at the fiber optic transceiver. There is a straight-through switch. Use a small screwdriver to repeatedly pluck the switch. The RX light and LINK light are on and the output is normal. This fault is caused by dust entering the switch.
4. Symptoms: The indicators are all normal and the network is slow
Solution: Use a laptop computer to access the UTP port of the fiber transceiver, enter Windows 98, click "Start" * "Run", enter the "PingXXX-T" command (XXX is the home page's IP address), you can find breakpoints. Replace the fiber transceiver. At this time, execute the ping command again. If you still find a breakpoint, you need to replace the fiber transceiver on the other end.
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