External Components; Front Panel Components - Silicon Graphics Origin 3900 User Manual

5: PX-brick

External Components

Front Panel Components

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This section describes the external components located on the front and rear panels of the
PX-brick.
The following are the front-panel components of the PX-brick (see Figure 5-3):
• L1 controller display. This liquid crystal display (LCD) displays status and error
messages that the L1 controller generates.
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 touch display or at a system console.
• LEDs:
– On/Off switch LED. This green LED illuminates when 48-VDC power is
applied to the internal components of the PX-brick.
– 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).
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