Sun Microsystems Netra CT 410, Руководство по обслуживанию

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Chapter 8 Removing and Replacing Hot-Swappable Subassemblies 8-17
8.5 Fan Trays
This section describes you how to remove and replace a fan tray in both the Netra
CT 810 server and the Netra CT 410 server.
Depending upon which host board you have, when the temperature rises above a
certain level, the CPU board sends out a warning that the system is overheating. If
the temperature rises too high, then the system shuts down automatically. Note that
these temperatures are not ambient air temperatures, but rather the CPU
temperatures that are monitored by a thermistor located under the heatsink on the
host CPU board.
The following temperatures apply to the Netra CP2140 board:
■
Warning: 158˚F (70˚C)
■
Shutdown: 167˚F (75˚C)
The following temperatures apply to the Netra CP2500 board:
■
Warning: 221˚F (105˚C)
■
Critical: 230˚F (110˚C)
■
Shutdown: 239˚F (115˚C)
If one fan tray fails, you must replace the failed fan tray as soon as possible. Even
though the system can run on one fan tray, if the temperature rises too high, a single
fan tray might not be able to cool the system properly.
High-speed fan trays designed especially for the Netra CP2500 board are required
when you install a Netra CP2500 board in a Netra CT 810 server or a Netra CT 410
server.
8.5.1 Removing a Fan Tray
1. Go to the front of the system, then use the system status panel to determine if a
fan tray has failed.
FIGURE 8-15
shows the locations of the fan tray LEDs on the Netra CT 810 server, and
FIGURE 8-16
shows the locations of the fan tray LEDs on the Netra CT 410 server.