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Replacement
Attention: Ensure that you complete the replacement of the power supply before plugging
in the power supply power cord. Plugging in the power cord before completing the power
supply replacement can cause possible data loss.
Replace in the reverse order.
Removal and Replacement While System Power is Applied
Attention: If system power must be removed before the power supply can be removed, see
"Removal While System Power is Removed" on page 4-61.
Replacing a Failed Power Supply
Attention: This procedure is for 7015 Models R40 or R50 only. The 7015 Model R30 CPU
Enclosure does not have hot plug capability and must be powered off before adding or
removing power supplies.
When you see the following message:
Broadcast message from UNKNOWN@localhost (tty) at 16:55:22 ...
rc.powerfail: init has received a SIGPWR signal.
The system is now operating with a power problem. ...
Inspect the LED for the power supplies. If an LED is out, then you should suspect a
malfunctioning power supply.
1. Disconnect the AC line cord from the malfunctioning power supply.
2. Loosen the mounting screw of the disconnected power supply.
A shutdown timer starts once the power supply is disengaged. The power supply must
be replaced within eight minutes. The timer is started or restarted each time the power
supply is disengaged. The timer is stopped and reset when the power supply is
engaged.
At this point the following messages appear:
.Broadcast message from UNKNOWN@localhost (tty) at 16:56:25 ...
rc.powerfail: init has received a SIGPWR signal.
The system has no backup cooling .
The system will shut down in 8 minutes unless the problem is
resolved before then. Execute rc.powerfail –h as the root user
for more information. ......
Broadcast message from UNKNOWN@localhost (tty) at 16:56:30 ...
rc.powerfail: The system will shut down in 8 minutes.
The system will shut down because either a fan failure has occurred
or the system is running on battery backup power. ....
At the same time the fans of the remaining power supplies increase in speed.
3. Remove the disconnected power supply.
4. Insert the new power supply.
4-62
Service Guide
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