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7. Lift the handle until it is perpendicular (90 degrees) to the top of the power supply. By placing the
handle perpendicular to the top of the power supply, the base or hinged portion of each handle acts as
a cam and will gently pry the power supply from its connector located on the CEC backplane.
8. After the power supply is released from its connector, pull the power supply out of the system.
9. Go to "Power supply replacement".
1 Service access cover
2 Power supply #1
3 Power supply release handle
Note: Do not leave a processor bay empty during normal operation or the system will not cool properly.
Power supply replacement
Note: If a power supply is being replaced for a redundant failure, after the service repair action is
completed, ask the customer to check the crontab file for any power/cooling warning messages.
When a power or cooling error is encountered, the system software adds an entry to the crontab
file to "wall" a warning message every 12 hours, to alert or remind the customer of the problem.
Replacing the faulty part does not clear this crontab entry, so unless the crontab file is edited to
remove this entry, the customer continues to be reminded of the failure despite its having been
repaired. Use the crontab -l command to read the crontab file to determine if an entry exists. Use
the crontab -e command to edit the file.
To replace a power supply, do the following:
1. Grasp the handle located on top of the new power supply. Pivot the handle upward to 90 degrees. This
action puts the handle cams into the correct position to help seat the power supply into its connector.
2. Carefully insert the power supply into the same power supply bay from which the faulty power supply
was just removed.
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NAS Gateway 500 Service Guide
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4 Power supply #2
5 NAS Gateway 500
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