Dell ExaScale E600i, Installation Manual

Page: 27 / 68

Power Supply | 27
To remove a PEM:
Step Task
1
If the system is operating with power supply redundancy, you may remove either PEM at any time. If the system is
operating without power supply redundancy, power down the system before removing the PEM.
2 Power off the remote power source, and then verify that the PEM status LED and Voltage LED are unlit. To be
completely sure that power is off, measure the voltage across the negative (-) and positive (+) source DC leads using
a voltmeter. The measurement across the positive and negative leads must be zero (0) volts before you proceed.
3
Toggle the Over Current Protector (located on the PEM front panel) to the OFF position.
4 Loosen the PEM safety cover retaining screw, and remove the cover.
5
Disconnect power cables attached to the PEM.
6 Slide the PEM out of the slot.
7
If you are not replacing the PEM, place a power supply blank in the empty slot.