Cabletron Systems 3T02-04 Manuel D’Utilisation

Chapter 5: Diagnostics and Troubleshooting

3. If the sequence is still abnormal:

a.

Remove the interface module by unscrewing the two retaining 
screws on the module’s front panel. Pull the module out using the 
“ears” on the front panel.

b. Carefully but firmly press down on all socketed components.

c.

Re-install the module. Make sure the module is properly seated 
and tighten the retaining screws. 

d. Reset the ATX and observe the power-up sequence. 

4. If it is still abnormal, contact Cabletron Systems Technical Support. 

If the Token Ring module powers up normally but the workstations are 
unable to communicate:

1. Check the LEDs for abnormalities which may help indicate the source 

of the problem. (LED behavior during normal operation is explained 
earlier in this chapter.)

2. Check the status of the ports using LCM.

3. Make sure the ring speed for all stations on the same ring are set for 

the same speed. One station configured for a different speed may 
disrupt ring operation.

4. Check for loose connections between the Token Ring module and the 

MAU and between the MAU and the workstations. Remember, the 
Token Ring ports cannot be connected directly to workstations. Also 
refer to the MAU’s documentation for additional information, such as 
wrapped or open ports.