Step 8. Verify That The Unit Emergency Power Off (Uepo) Switch Is In The Off Position; Computer Room Emergency Power Off (Epo) - IBM eserver pSeries 690 Installation Manual

3. Attach the display cable to either one of the two ports located on the graphics
adapter.
4. Check all blind swap cassettes for broken latches by lightly pushing down on the
rear of the handles. Replace any broken latches.
5. Check to ensure adapters are seated by pushing down on the small metal tab on
top of the adapter.
The placement of the graphics adapters and keyboard adapters is described in the PCI
Adapter Placement Reference .
Step 8. Verify that the Unit Emergency Power Off (UEPO) Switch is in the Off
Position
Note: UEPO refers to the red unit emergency power off switch located on the unit.
The unit emergency power off (UEPO) switch is located on the front of the primary
frame (A Frame) of each pSeries 690. When the switch is tripped, utility power is
confined to the machine power compartment. All volatile data will be lost.

Computer Room Emergency Power Off (EPO)

Attention:
tripped, the batteries will engage and the computer will continue to run. It is possible to
attach the computer room EPO system to the machine UEPO. When this is done,
tripping the room EPO will disconnect all power from the power cords and the IBF
backup unit. In this event, all volatile data will be lost.
To incorporate the IBF into the room EPO, a cable connection must be made to connect
to the back of the system UEPO panel. The following diagrams illustrate how this
EPO refers to the computer room emergency power off.
When the integrated battery feature (IBF) is installed and the room EPO is
Chapter 2. Installing the pSeries 690
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