Troubleshooting
32
Replacing an External Switch in the 19-inch Relay Rack
1. Remove the power cord from the failed switch module.
2. Undo the rackmount screws from the failed switch module and save them
3. Remove the data cables from the failed switch and label them for your
reference.
4. Remove the dust cover, screws, and rubber feet from the replacement
switch, if in place, and save for future use.
5. Attach the guiderails to either side of the replacement switch module, if
necessary.
Note that the guiderails on the AT-TS90TR and AT-TS95TR are pre-
installed.
6. Place the replacement switch module in the rack.
7. Secure the switch module to the rack with the rackmount screws you
8. Power up the replacement switch.
9. Plug the other end of the power cord into a power source.
Check the LEDs to ensure the switch is operational.
10. Re-attach the data cables to the replacement switch.
You are done replacing an external switch.
