Power Supply/Cooling Modules; Figure 11-5 Power Supply/Cooling Module - Silicon Graphics Origin 3900 User Manual

11: D-brick2

Power Supply/Cooling Modules

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Two power supply/cooling modules (PSUs), which are mounted in the rear of the
D-brick2, supply redundant cooling and power to the enclosure. Voltage operating
ranges are nominally 115 V or 230 VAC, and are selected automatically. The supplies
should be plugged into your SGI rack's power distribution strip (PDS). Four LEDs
located on the rear panel of the PSU/cooling module indicate the status of the power
supply and the fans (see Figure 11-5).
Note: If a power supply fails, do not remove it from the enclosure until you have a
replacement power supply. The cooling fans in the supply will continue to operate.
Caution: You must install a new PSU/cooling module within 10 minutes after removing
a faulty one. Otherwise, thermal overload of the D-brick2 can result.
DC output fail LED
Figure 11-5 Power Supply/Cooling Module
Fan fail LED AC input fail LED
PSU good LED
AC power input
Power on/off
switch (I = on)
007-4653-001