Common Troubleshooting Procedures - D-Link DGS-6600 Series Hardware Installation Manual

DGS-6600 Layer 3 Chassis Ethernet Managed Switch Hardware Installation Guide

Common Troubleshooting Procedures

Fault 1: The system login password has been forgotten.
Description:
The Switch's system login password has been forgotten or lost, making it impossible to login and configure the
Switch.
Troubleshooting:
To resolve this issue please contact the D-Link Customer Service Department for technical support.
Fault 2: The AC power module is not working.
Description:
The System LED of each line card is OFF, the power module LED is OFF, the fan tray LEDs are OFF, and the
fans are not working.
Troubleshooting:
1.
Check if all the cabinet's cables have been correctly connected.
2.
Check whether the power cables are firmly connected to the cabinet power sockets and power modules.
3.
Check if the power modules have been installed correctly.
4.
Check if the connectors on the backboard of the power system are tightened.
5.
Check the AC power source.
Fault 3: The line card LEDs do not light as expected when the Switch is powered on.
Description:
The line card's System LED is OFF, flashing GREEN, or RED. The line card's Link/Act LED is solid ON when no
network cable or fiber optic cable is plugged in. The fault remains after a restart.
Troubleshooting:
Check if the line card has become loose. If the line card has become loose, re-install the line card, ensuring that
it has been inserted in the right position, and tighten the fastening screws. If the line card still does not work,
check if the connector on the back of the slot on the backplane is loose and check if the guiding rails for the slot
have become distorted. If there is a problem with the backplane's slot or the guiding rails have become distorted,
try to install the line card in another slot. If the slot or connection is not the cause of the problem, send the line
card back for repair.
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