Cabletron Systems CSX100 series User Manual - Chapter 8. Troubleshooting
Troubleshooting
103
Chapter 8. Troubleshooting
Investigating Hardware Installation Problems
Check the LEDs to solve common hardware
problems
Power light is off
•
Check that the power cord is firmly plugged into the back panel of
the router and the other end into an active AC wall or power strip
outlet.
•
Check that the power switch is turned on.
LEDs are flashing
•
The power up test has discovered a hardware error and the rightmost
five LEDs flash an error code. Contact Technical Support.
ISDN NT1 channel LED is off/blinking slowly (North
America only)
•
This LED is only active if an NT1 is installed. If the unit has an
internal NT1, a problem is occurring in the connection to the
network.
•
Examine the phone line cable for frays. Check that each end is
securely plugged in.
•
Contact the ISDN service provider to ensure the ISDN line is
operational. If you have other ISDN equipment that is operational,
temporarily plug it into the wall jack to verify the ISDN line out to
the service provider.