IBM 2194, 6345, 2193 manual When the system is in normal on state

After making the necessary setting change in Setup, you can use the power button to enter system Standby mode by pressing the button for less than four seconds while the computer is on.

Note:

The above step works only when the system is already on.

Take note of the following when using Standby feature.

When the system is in "normal on" state:

•Pressing the power button for more than four seconds turns off the system power.

•Pressing the power button for less than four seconds brings the system into Standby mode.

•Any normal IRQ event, such as a modem ring in, wakes up the system from Standby mode and turns it to the "normal on" state. (For more information about Modem Ring In, refer to “Automatic Power On” on page 6-19

Note:

Take note that, while the system is in Standby mode, pressing the power button for less than four seconds does not wake the system up.

When the system is in "normal off" state:

•Pressing the power button, regardless of the length of time you press it (less than or more than four seconds), simply turns the system power on.

5-4IBM Personal Computer User Guide