16 Appendix B: Troubleshooting

This section describes the troubleshooting procedures to address any problems encountered with the switch. The following table provides a problem and resolution sequence to assist in troubleshooting of minor operating problems.

Table 16-1. Troubleshooting Symptoms and Solutions for PD-IES008x-DCXX
Symptom	Corrective Steps
Unit does not power-up	Verify that the input power connection polarities are not reversed. Measure the voltage applied to the unit and verify that it is according to Table 17-2 Verify that the external power supply can deliver the amount of power wattage listed on Table 17-2. Remove all cables connected to the switch and leave only the power input cable. Remove and re-apply power to the switch
PoE Powered-Device (PD) does not operate.	Remove all cables connected to the switch and leave only the power input cable. Remove and re-apply power to the switch and wait for the System Status LED to lit in Green. Verify that the switch detects a PD. Verify that the PD is designed for PoE operation. Verify that a standard Category 5/5e/6 cable is in use, a straight-wired cable, with four pairs. If an external power splitter is in use, replace it with a splitter known to be in good condition. Ensure that the input Ethernet cable is connected to the Up-link port. Verify that the PD is connected to the Data and Power port. Reconnect the same PD to a different PoE switch. If it works, then probably there is a faulty port or a faulty RJ45 connection. Verify that there is no short-circuit over any of the twisted pair cables or over the RJ45 connectors.
The end device operates, but there is no data link on the copper port.	Remove all cables connected to the switch and leave only the power input cable. Remove and re-apply power to the switch and wait for the System Status LED to lit in Green. If an external power splitter is in use, then replace it with a splitter known to be in good condition. Verify that you are using a standard UTP/FTP Category 5 straight (non-crossover) cabling, with all four pairs. Verify that the Ethernet cable length is less than 100 meters from the Ethernet source to the remote terminal.

Table 16-2. Troubleshooting Symptoms and Solutions for PD-IES206x-DCXX
Symptom	Corrective Steps
Unit does not power-up	Verify that the input power connection polarities are not reversed. Measure the voltage applied to the unit and verify that it is according to Table 17-2. Verify that the external power supply can deliver the amount of power wattage listed on Table 17-2. Remove all cables connected to the switch and leave only the power input cable. Remove and re-apply power to the switch
PoE Powered-Device (PD) does not operate.	Remove all cables connected to the switch and leave only the power input cable. Remove and re-apply power to the switch and wait for the System Status LED to lit in Green. Verify that the switch detects a PD. Verify that the PD is designed for PoE operation. Verify that a standard Category 5/5e/6 cable is in use, a straight-wired cable, with four pairs. If an external power splitter is in use, replace it with a splitter known to be in good condition. Ensure that the input Ethernet cable is connected to the Up-link port. Verify that the PD is connected to the Data and Power port. Reconnect the same PD to a different PoE switch. If it works, then probably there is a faulty port or a faulty RJ45 connection. Verify that there is no short-circuit over any of the twisted pair cables or over the RJ45 connectors.
The end device operates, but there is no data link on the copper port.	Remove all cables connected to the switch and leave only the power input cable. Remove and re-apply power to the switch and wait for the System Status LED to lit in Green. If an external power splitter is in use, then replace it with a splitter known to be in good condition. Verify that you are using a standard UTP/FTP Category 5 straight (non-crossover) cabling, with all four pairs. Verify that the Ethernet cable length is less than 100 meters from the Ethernet source to the remote terminal.
The end device operates, but there is no data link on the Fiber port.	Remove all the cables connected to the switch and leave only the power input cable. Remove and re-apply power to the switch and wait for the System Status LED to lit in Green. Verify that the transceiver/module are well inserted in the SFP cage. Verify that the same type of transceiver/module is applied on both fiber optic cable ends. Verify that the fiber optic cable is compatible with the transceiver/module type. Verify that the fiber optic cable does not exceed the transceivers type maximum length. Try to reconnect the SFP transceiver/module to the SFP cage.

Table 16-3. Troubleshooting Symptoms and Solutions for PD-IES-xyy-AC
Symptom	Corrective Steps
Unit does not power-up	Verify that the input power connection polarities are not reversed. Measure the voltage applied to the unit and verify that it is according to Table 17-3. Verify that the external power supply can deliver the amount of power wattage listed on Table 17-3. Remove all cables connected to the switch and leave only the power input cable. Remove and re-apply power to the switch
The end device operates, but there is no data link on the copper port.	Remove all cables connected to the switch and leave only the power input cable. Remove and re-apply power to the switch and wait for the System Status LED to lit in Green. Verify that a standard Category 5/5e/6 cable is in use - Straight wired cable, with four pairs. Ensure that the input Ethernet cable is connected to the Up-link port. Verify that there is no short-circuit over any of the twisted pair cables or over the RJ45 connectors.
The end device operates, but there is no data link on the Fiber port. (PD-IES206-AC only)	Remove all the cables connected to the switch and leave only the power input cable. Remove and re-apply power to the switch and wait for the System Status LED to lit in Green. Verify that the transceiver/module are well inserted in the SFP cage. Verify that the same type of transceiver/module is applied on both fiber optic cable ends. Verify that the fiber optic cable is compatible with the transceiver/module type. Verify that the fiber optic cable does not exceed the transceivers type maximum length. Try to reconnect the SFP transceiver/module to the SFP cage.