9
5. W henever there is a fault, you can contact our technical support
after you identify the problem and the alarm.
Common Problems:
1. PWR power supply indicator lamp not lighting
Cause:
1. Power supply not properly connected.
2. Protector tube damaged.
3. Power input tie-line in reverse connection.
4. Internal power supply circuit with failure.
Solution:
1
. Check power switch and jack.
2. Replace protector tube.
3. Correct power supply line connection.
4. Returned to the manufacturer for repair.
2. FX (Fiber Link Port) indicator lamp not lighting
Cause:
Optic fiber port link is fault.
Solution:
1. Check fiber optic is link or not.
2. Check fiber optic loss is high.
3. Clean the connector of optic interface.
4. Insert the well connector in place.
5. Returned to the manufacturer for repair.
3. TP-TX (Ethernet Port) indicator lamp not lighting
Cause:
Ethernet port link is fault.
Solution:
1. Check Ethernet (RJ45) line is link or not.
2. Check Ethernet (RJ45) port is loose.
3. Check the rate of selected media converter
