Cabinet Operation; Turning On The Computer System (Without Ups) - HP A3765A Installation Manual

3

Cabinet Operation

Once you have the computer system installed in the rack mount cabinet and all the
peripherals connected, you are ready to turn on the system. The power up sequence for the
computer in the cabinet is controlled by the ON/OFF switch on the cabinet, unless you
have installed a PowerTrust UPS.

Turning On the Computer System (Without UPS)

When turning on the computer in the cabinet, remember that includes all the components
mounted in the cabinet turn on at the same time (if the component ON/OFF switches are
in the ON position). The basic steps for the power up sequence are listed below, refer to the
documentation that comes with the computer for specific details concerning the operating
system software for your computer.
CAUTION Ensure external power connection matches voltage setting of all products in
this cabinet.
1. Turn on all the external equipment connected to the computer first.
2. Check all READY or ONLINE indicators on the external equipment to be sure that they
are powered up and ready.
NOTE If any of the external equipment has been OFF due to any environmental
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. Be sure all the ON/OFF switches, of the components mounted in the cabinet, are in the
ON position.
4. When all external equipment indicate 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.
If there are multiple HP D Class computers mounted in the cabinet, you may
NOTE
want to power each one up separately. This would reduce the power surge
through the cabinet PDU if all computers and equipment try to power up at
the same time.
Chapter 3
Turning On the Computer System (Without UPS)
Cabinet Operation
3-1