Troubleshooting, Power failure troubleshooting procedures, Power led is off – Nortel Networks HotWire 8600 User Manual
Page 48: Chapter 4, If not, refer to chapter 4
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.