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AXP1440 Operations
80 AXP1440 Installation and Use (6806800H23U )
4.3 Recommended Power-Off Procedures
Procedure - Power-Off System
Follow these steps to shut down your AXP1440.
1. Shut down all software operations and the operating system. For shelves with
independently running segments, each segment must be shut down.
2. Turn each circuit breaker on the front of PEM A and PEM B to the OFF position.
3. Disable the DC power at each of the external sources (branch circuit or power
distribution unit) for both PEM A and PEM B.
This completely removes power from the shelf and its subassemblies.
4.4 Emergency Power-Off Procedures
Procedure - Emergency Power-Off
Read the caution and follow the next steps if it is necessary to remove power during an
emergency situation.
1. Turn each circuit breaker on the front of PEM A and PEM B to the OFF position.
2. Disable the DC power at the external sources (branch circuit or power distribution
unit) for PEM A and PEM B).
Step 2 removes the input power from the slots in the AXP1440 shelf only. It does not
remove power to the PEMs. To remove power to these components, refer to the next
step.
Following this procedure will result in a loss of data and may cause damage to chassis
components in a running platform. Use this method only when normal shutdown
procedures cannot be followed.