Lenovo 646066U - ThinkPad T61 6460, Hardware Maintenance Manual, Page: 43 / 256

Note for the APM operating system: Even if you do not set the low-battery alarm,
the charge indicator notifies you when the battery is low, and then the computer
enters the power-saving mode automatically. This default low-battery behavior is
independent of the operating system; so if you have set the low-battery alarm, the
computer may not do what you specified. It chooses either your setting or the
default setting, whichever is appropriate.
If you are using the ACPI operating system, only the low-battery alarm is
available.
To cause the computer to return from standby mode and resume operation, do one
of the following:
v
Press the Fn key.
v
Open the LCD cover.
v
Turn on the power switch.
Also, in either of the following events, the computer automatically returns from
standby mode and resumes operation:
v
The ring indicator (RI) is signaled by a serial device or a PC Card device.
v
The time set on the resume timer elapses.
Note: The computer does not accept any input immediately after it enters
standby mode. Wait a few seconds before taking any action to reenter operation
mode.
Hibernation mode
In hibernation mode, the following occurs:
v
The system status, RAM, VRAM, and setup data are stored on the hard disk.
v
The system is powered off.
Note: If the computer enters the hibernation mode while it is docked to the
ThinkPad Advanced Dock or ThinkPad Advanced Mini Dock, do not undock it
before resuming normal operation. If you do undock it and then try to resume
normal operation, you will get an error message, and you will have to restart the
system.
To cause the computer to enter hibernation mode, do any of the following:
v
Press the Fn+F12 keys.
v
If you are using the APM operating system and have set the mode to Power
switch mode [Hibernation] , turn off the power switch.
v
If you are using the ACPI operating system and have defined one of the
following actions as the event that causes the system to go into hibernation
mode, perform that action.
– Closing the lid.
– Pressing the power button.
– Pressing Fn+F4 keys.
Also, the computer goes into hibernation mode automatically in either of the
following conditions:
v
If a “hibernation time” has been set on the timer, and if the user does not do
any operation with the keyboard, the TrackPoint, the hard disk drive, the
parallel connector, or the diskette drive within that time.
Related service information
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