D-Link DES-7200 Hardware Installation Manual page 69

DES-7200 Hardware Installation Guide
Fault 5: The LED is abnormal after a line card works for some time.
[Fault Description]
The Status LED of the line card is OFF or RED. The Link/ACT LED of the line card is solid
ON when no network cable or optical fiber is plugged. The fault remains after restart.
[Troubleshooting]
Check if the board gets loose. If yes, install the line card again and ensure that it is inserted
into pos ition, before you tighten t he f astening screws. I f t he l ine c ard s till do es not work,
check if the connector of the slot on the backplane is loose and check if the guide rail of the
slot is deformed. If yes, insert the board to another slot for a try. If the slot and connection are
not the cause, return the line card for repair.
Fault 6: The LED of the management board is abnormal.
[Fault Description]
The LE D of t he m anagement board b ecomes abnor mal af ter t he b oard i s powered on or
works for some time. For example, the Status LED is flashing or OFF, and the Alarm LED is
red.
[Troubleshooting]
Check if the management board gets loose. If yes, install the management card again and
ensure that it is inserted into position, before you tighten the fastening screws. If the line card
still does not work, check if the connector of the slot on the backplane is loose and check if
the guide rail of the slot is deformed. If yes, insert the board to another slot for a try. If the slot
and connection are not the cause, return the management card for repair.
When the Alarm LED is red, the cause may be the fault of another module in the system, in
which c ase you c an c heck ot her m odules ( for ex ample, l ine c ard, f an, po wer, a nd
overheating) for any alarm. If yes, you should first handle the faults of other modules. You
can also identify the faults by logging in to the management software.
Fault 8: The fan tray does not work or an exception occurs to the LED.
[Fault Description]
After the system is started, the fans in the fan tray do not work or the Power LED is OFF, and
the Alarm LED is red.
[Troubleshooting]
Check i f t he c onnection between t he f an t ray a nd t he b ackplane i s s ecure and i f t he
connector gets loose. If the connection is secure, you need to replace the fan tray.
Fault 9: The serial port console has no output.
[Fault Description]
After the system is started, the serial port console does not display any information.
[Troubleshooting]
Check whether serial port cables are connected correctly and whether the connected serial
port is identical with that configured on the super terminal. Check whether the configuration
of the serial port on the super terminal is the same as that described in DES-7200
Configuration Guide. If not, modify the serial port configuration parameters. If there is still no
serial p ort pr inted information, pl ease c ontact D-Link Customer S ervice D epartment f or
technical support.
Fault 10: The serial port console outputs illegible characters.
[Fault Description]
5-3