Procedure 5-59: Clear "power/fuse FA or FB failed" or "power failure" alarm
Required equipment
In addition to the equipment listed in Required equipment, a power meter is also required.
Before you begin
Prior to performing this procedure:
-
Refer to Before you begin in this chapter.
-
Refer to Electrostatic discharge in Chapter 1, Safety.
Steps
Complete the following steps to identify and clear a power/fuse failed or power failure alarm.
1 |
Are both power indicators (A PWR ON and B PWR ON) lighted on the Alcatel-Lucent 1850 TSS-5 shelf?
| ||||||
2 |
Perform a thorough visual inspection of the access panel. Look for signs of damage or a loose power connection. Important! Each power feeder supplies redundant power to the shelf circuit packs. It is highly unlikely that a circuit pack failure would cause a fuse to blow. The more probable cause of a failure in a feeder/circuit breaker is a short in the feeder path or a problem with a circuit pack connector. | ||||||
3 |
Were any problems found involving the power connections?
| ||||||
4 |
Monitor the DC power supplied to the shelf. Important! A power alarm indicates the loss of one of the two redundant power feeds. | ||||||
5 |
Is the DC voltage normal (−48 or +24 VDC) at both connectors?
End of steps |