Silicon Graphics SGI Altix 3700 Bx2, User Manual

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7: PX-brick
External Components
This section describes the external components located on the front and rear panels of the
PX-brick.
Front Panel Components
The following are the front panel components of the PX-brick (see Figure 7-3):
• L1 controller and display. The L1 controller generates PX-brick status and error
messages that appear on the liquid crystal display (LCD).
Note: For more information about the L1 controller, see the SGI L1 and L2 Controller
Software User’s Guide .
• On/Off switch with LED. Press this button to turn on the internal components of
the PX-brick. Alternatively, you can turn on the internal components at an L2
controller display or at a system console. When the internal components are on, the
LED illuminates green.
• LEDs:
– On/Off switch LED. This green LED illuminates when the internal components
of the PX-brick are on and turns off when they are off.
– Service required LED. This LED illuminates yellow to indicate that a
component is broken or is not operating properly (for example, if a fan is off),
but the PX-brick is still operating.
– Failure LED. This LED illuminates red to indicate that a system failure has
occurred and the PX-brick is not operating.
• Fans. Three hot-swappable fans provide the required cooling for your PX-brick.
Warning:
To prevent personal injury, or damage to the PX-brick, the
hot-swappable fans can be installed only by a trained SGI system support
engineer (SSE).