Sun Microsystems Fire V890 Service Manual page 81

2. Unplug the motherboard fan tray cable from the fan tray you are going to remove.
If you are removing a redundant fan tray, drape the cable away from the other fan.
Caution – If you are performing a hot-swap procedure, do not put your hand into
the empty fan bay. The fan in the populated fan tray is still spinning.
3. Loosen the captive screw on the fan tray you are going to remove.
4. If you are removing fan tray 5 and fan tray 6 is installed, disconnect the cable to
fan tray 6 and drape it out of the way so that you can remove fan tray 5.
Note – When both motherboard fan trays are not operational in a running Sun Fire
V890 system, the environmental monitoring software generates warning messages
that the fan trays are removed. If an operational fan tray is not installed quickly, the
system may initiate a thermal shutdown. During motherboard fan tray hot-swap
procedures, to avoid these messages and potential cooling issues resulting in a
system thermal shutdown, reconnect the motherboard fan tray cables for functional
fans as soon as possible.
Chapter 2 Servicing the Motherboard Side Components 53