Nortel Networks HotWire 8600 - Manual (Page 48)

4-1 8600-A2-GN20-20 October 1997
Troubleshooting
4
Power Failure Troubleshooting Procedures
The following illustrates the steps to take when either the PWR A or PWR B
LEDs, or both, are OFF.
1. Using a voltmeter, check for power at the terminal connections.
— If there is power, call your sales representative for service to the 8600.
2. If there is no power at the terminal, call the appropriate electrician.
Power LED is OFF
PROBLEM: One of the DC PWR LEDs is OFF due to a failure in a single
chassis within a stack.
ACTION: Go to the stack to see which chassis has the power failure. To
clear the power alarm, remove the power from the chassis and
disconnect the powered-off chassis from the management
daisy chain (bypassing the failed chassis). Follow the
appropriate power failure troubleshooting procedure described
above.