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Cabinet Operation
Turning On the Computer System (with UPS)
Turning On the Computer System (with UPS)
When turning on the cabinet power, remember that all the components mounted in the
cabinet turn on at the same time, except the SPU. The basic steps for the power up
sequence are listed below.
1. Turn on all the external equipment connected to the computer.
2. Check all READY or ONLINE indicators on the external equipment to be sure that they
are powered up and ready.
If any of the external equipment has been OFF due to any environmental
NOTE
problem, such as heating or air conditioning failure, or outside storage
conditions (such as a loading dock) allow approximately 30 minutes for the
temperature of the equipment to stabilize before turning on the computer.
3. Except for the SPU, put all the ON/OFF switches, of the components mounted in the
cabinet, in the ON position. Leave the SPU ON/OFF switch in the OFF position.
4. When all external equipment indicates READY or ONLINE, put the cabinet ON/OFF
switch in the ON position. All components mounted in the cabinet are going to power up
at the same time (except for the SPU).
5. Put the UPS Output switch in the ON (|) position. This applies power to the SPU and
console line cords.
6. Put the SPU and console switches in the ON position.
7. The computer system should now be powered up and executing the power-on selftests in
preparation for a normal bootup procedure.
Turning Off the Computer System (Without UPS)
The computer has no remote turn off sensor for AC power. If the cabinet switch is put in
the OFF position before turning off the computer switch, the computer senses that as an
AC power fail condition.
1. Put the computer power switch in the OFF position.
2. Put the cabinet power switch in the OFF position. This removes AC from all the
components mounted in the cabinet, including the computer.
3. At this point, other components in the cabinet can be turned off, if necessary.
4-2
Chapter 4
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