IBM ThinkPad R30, Operator'S Manual

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Using the AC Rack
5-7
Stopping the AC Rack
Note: The system unit can contain either a power distribution unit (PDU) or a power
distribution bus (PDB).
The following methods can be used to stop (switch off power to) the rack containing either a
PDU or a PDB:
•
Under ordinary conditions power is switched off to the CPU Enclosure and to other
drawers if they are connected with the power control cables.
•
Immediately. All power is switched off to the drawers in the rack.
•
shutdown program power-off. Power is switched off to the CPU Enclosure and to other
drawers if they are connected with the power control cables.
Only the first two methods are described in this book. Refer to the
AIX System Management
Guide: Operating System and Devices and other operating system documentation for
information about stopping the rack and the shutdown program power-off method. This
method can be used for any key mode position.
Stopping the AC Rack Containing a PDU – Under Ordinary Conditions
Attention: Use the appropriate shutdown command before you stop the system unit;
failure to do so may result in the loss of data. Refer to
AIX System Management Guide:
Operating System and Devices and other operating system documentation for information
about the shutdown command and stopping the system unit.
1. Set the key mode switch to the Service position.
2. Set the Power button to Off (button in the out position).
Key Mode Switch