Power Management - IBM A21e - ThinkPad 2628 - Celeron 600 MHz Hardware Maintenance Manual

To remove the user HDP that you have forgotten, do the
following:
1. Power on the computer by pressing and holding F1.
2. Enter the SVP. The IBM BIOS Setup Utility menu
appears.
3. Select Password, using the cursor keys to move down
the menu.
4. Select Hard-disk x password, where x is the letter of
the hard-disk drive. A pop-up window opens.
5. Select either User HDP or Master HDP.
6. Enter the master HDP; then leave the New Password
field blank and press Enter twice.
7. Press F10.
8. Select Yes in the Setup Configuration window.
The both user HDP and master HDP have been
removed.

Power management

To reduce power consumption, the computer has three
power management modes: screen blank (standby in
Windows 95 and Windows NT) , standby (suspend in
Windows 95 and Windows NT), and hibernation.
Note for standby mode and hibernation mode
Do not install or remove the UltraBay during standby
mode or hibernation mode. The UltraBay of
ThinkPad A21e supports only cold-swap. If you try
to do warm-swap, the UltraBay LED starts to blink
with beep sound.
Screen blank mode:
In screen blank mode, the following occurs:
v The LCD backlight turns off.
v The hard-disk drive motor stops.
v The speaker is muted.
To enter screen blank mode, press Fn + F3. To end screen
blank mode and resume normal operation, press any key.
Standby mode:
When the computer enters standby mode, the following
events occur in addition to what occurs in screen blank
mode:
v The LCD is powered off.
v The hard-disk drive is powered off.
v The CPU stops.
To enter standby mode, do any of the following:
v Press Fn + F4.
v Close the LCD cover. (To prevent the computer from
entering standby mode when the LCD is closed, click
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ThinkPad A21e
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