IBM RS/6000 44P Series 270, User Manual

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Chapter 2. Using the 44P Series Model 170
This chapter provides information on how to start and use the system unit.
Starting the System Unit
1. Set the power switches of the attached devices to On.
Note: When the system is plugged in but not powered on, the Power-On LED
flashes slowly.
2. If the LED is not flashing and
OK
is not displayed, ensure that the power cord,
located at the back of the system unit, is plugged into a grounded electrical outlet.
3. If this does not solve the problem, go to “Chapter 8. Hardware Problem
Determination” on page 149.
4. Press the Power-On switch (1).
When you press the Power-On switch (1), the Power-On LED (2) comes on, and
the system starts a POST (power-on self test).
During POST, progress codes display in the operator panel display.
5. If the Power-On LED does not come on and there is no indication of power when
you press the Power-On switch, go to “Chapter 8. Hardware Problem Determination”
on page 149.
Stopping the System Unit
Attention: When you use the shutdown procedure for your system, follow the correct
shutdown procedure before you stop the system unit. Failure to do so can
result in the loss of data. The System unit is powered down by the
shutdown procedure.
1. At a command line, enter
shutdown
command to stop the operating system.
2. After you shut down the operating system, set the power switches of any attached
devices to Off.
3. If you will be servicing the system unit, unplug the system-unit power cable from the
electrical outlet.
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