Methods of Starting the -48 V dc Rack
The four methods of starting the 7015 CPU enclosure installed in a DC rack are as follows:
Manually. The power is switched on manually, and the rack does a normal or a service
Remotely. The power is switched on from another location, and the rack does a normal
IPL. (To use this method, a modem or equivalent device must be attached to the CPU
enclosure with a remote bring-up cable.)
Programmed by date and time. On a specific day and time, the power is switched on and
the rack does a normal IPL.
Recovery after a power failure. When the power is restored, the power is switched on
and the rack does a normal IPL.
Only the manual start is described in this book. See your operating system documentation
for information about other methods of starting the system unit. Also refer to "Chapter 3.
Using System Guard" for additional start up and shut down procedures.
Manually Starting the -48 V dc Rack
1. If the power switches of the attached devices have not been set to On, do it now.
2. Make sure that all of the circuit breaker switches, located on the front of the power
distribution panel, are set to On (up position).
Note: Before setting the Power button to on, wait for the operator panel display to display
the word "Stand-By."
3. With the key mode switch in the Normal position, start the rack by setting the Power
button to on (button pushed in) located on the operator panel of the CPU enclosure.
4. If power does not come on, ensure that the power cables from the customer's power
source are correctly connected to the power distribution panel. If this does not solve the
problem, refer to the AIX Problem Solving Guide and Reference manual.
When you press the Power On button, the Power light comes on and the system starts a
power-on self-test (POST). During the POST, numbers are displayed in the three-digit
-48 V dc Rack with CPU Enclosure