6
Troubleshooting
This troubleshooting section is intended to help you solve the most common problems on the DES-5024.
The Diagnostic LED displays a code if there is a problem on the DES-5024. If an error cannot be resolved by implementing the solutions in this section, contact D-Link Technical Support.
All LEDs are explained in detail in Chapter 4, LEDs. If you are having a problem that is not discussed here, contact technical support.
ProblemSolution
POST Errors The DES-5024 performs a Power On Self Test (POST) every time it is powered on. If you are connected to the DES-5024 through Local Console Management during the POST you can see the results displayed on your monitor. The login screen appears after the DES-5024 has completed the POST.
The POST checks all of the hardware components on the DES-5024. See Table 8: Diagnostic LED for proper actions.
Cables Faulty cable is the most common source of problems on Ethernet and Fast Ethernet networks. Check the cable first if you are having any problems connecting to a device.
Ethernet is more fault tolerant than Fast Ethernet. If you are moving from Ethernet to Fast Ethernet, make sure the cables are pinned out correctly. See Chapter 3, Connecting the DES-5024 to the Network, Cable Specifications, for a diagram showing the proper pin arrangement for Ethernet and Fast Ethernet.
Port States All ports on the DES-5024 have two modes: auto negotiation mode and forced mode. Ports in auto negotiation mode auto negotiate the proper speed and duplex mode. Ports in forced mode have been manually set to a particular speed and duplex mode. Check the LEDs on the DES-5024 and on the link partner to verify settings. See Chapter 4, LEDs, for an explanation of all LEDs.
The port settings on the DES-5024 and the port settings on the device you are connecting to must be the same in order for them to communicate. Check the speed and duplex setting on both the port and device you are connecting to.
Power LED is Off Check the three pronged power plug and verify that you are getting power from the wall socket. If the DES-5024 is on and the power LED is not working properly return the DES-5024. If the DES-
